terraform

package
v1.3.0 Latest Latest
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 Go to latest Published: Nov 6, 2019 License: MPL-2.0 Imports: 51 Imported by: 638

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Index

Constants

View Source 
const (
	// StateVersion is the current version for our state file
	StateVersion = 3
)

Variables

View Source 
var ErrNoState = errors.New("no state")

ErrNoState is returned by ReadState when the io.Reader contains no data

View Source 
var EvalDataForNoInstanceKey = InstanceKeyEvalData{}

EvalDataForNoInstanceKey is a value of InstanceKeyData that sets no instance key values at all, suitable for use in contexts where no keyed instance is relevant.

View Source 
var GraphTypeMap = map[string]GraphType{
	"apply":        GraphTypeApply,
	"plan":         GraphTypePlan,
	"plan-destroy": GraphTypePlanDestroy,
	"refresh":      GraphTypeRefresh,
	"legacy":       GraphTypeLegacy,
	"validate":     GraphTypeValidate,
	"eval":         GraphTypeEval,
}

GraphTypeMap is a mapping of human-readable string to GraphType. This is useful to use as the mechanism for human input for configurable graph types.

Functions

func CheckCoreVersionRequirements 

func CheckCoreVersionRequirements(config *configs.Config) tfdiags.Diagnostics

CheckCoreVersionRequirements visits each of the modules in the given configuration tree and verifies that any given Core version constraints match with the version of Terraform Core that is being used.

The returned diagnostics will contain errors if any constraints do not match. The returned diagnostics might also return warnings, which should be displayed to the user.

func ConfigTreeDependencies 

func ConfigTreeDependencies(root *configs.Config, state *states.State) *moduledeps.Module

ConfigTreeDependencies returns the dependencies of the tree of modules described by the given configuration and state.

Both configuration and state are required because there can be resources implied by instances in the state that no longer exist in config.

func ConnectionBlockSupersetSchema 

func ConnectionBlockSupersetSchema() *configschema.Block

connectionBlockSupersetSchema is a schema representing the superset of all possible arguments for "connection" blocks across all supported connection types.

This currently lives here because we've not yet updated our communicator subsystem to be aware of schema itself. It's exported only for use in the configs/configupgrade package and should not be used from anywhere else. The caller may not modify any part of the returned schema data structure.

func Eval 

func Eval(n EvalNode, ctx EvalContext) (interface{}, error)

Eval evaluates the given EvalNode with the given context, properly evaluating all args in the correct order.

func EvalRaw 

func EvalRaw(n EvalNode, ctx EvalContext) (interface{}, error)

EvalRaw is like Eval except that it returns all errors, even if they signal something normal such as EvalEarlyExitError.

func GraphDot 

func GraphDot(g *Graph, opts *dag.DotOpts) (string, error)

GraphDot returns the dot formatting of a visual representation of the given Terraform graph.

func MustShimLegacyState 

func MustShimLegacyState(legacy *State) *states.State

MustShimLegacyState is a wrapper around ShimLegacyState that panics if the conversion does not succeed. This is primarily intended for tests where the given legacy state is an object constructed within the test.

func ParseResourceIndex 

func ParseResourceIndex(s string) (int, error)

func ParseResourcePath 

func ParseResourcePath(s string) []string

func PathObjectCacheKey 

func PathObjectCacheKey(path addrs.ModuleInstance, objectName string) string

PathObjectCacheKey is like PathCacheKey but includes an additional name to be included in the key, for module-namespaced objects.

The result of this function is guaranteed unique for any distinct pair of path and name, but is not guaranteed to be in any particular format and in particular should never be shown to end-users.

func ProviderHasDataSource 

func ProviderHasDataSource(p ResourceProvider, n string) bool

func ProviderHasResource 

func ProviderHasResource(p ResourceProvider, n string) bool

func ReadStateV1 

func ReadStateV1(jsonBytes []byte) (*stateV1, error)

func ReferencesFromConfig 

func ReferencesFromConfig(body hcl.Body, schema *configschema.Block) []*addrs.Reference

ReferencesFromConfig returns the references that a configuration has based on the interpolated variables in a configuration.

func ShimLegacyState 

func ShimLegacyState(legacy *State) (*states.State, error)

ShimLegacyState is a helper that takes the legacy state type and converts it to the new state type.

This is implemented as a state file upgrade, so it will not preserve parts of the state structure that are not included in a serialized state, such as the resolved results of any local values, outputs in non-root modules, etc.

func TestStateFile 

func TestStateFile(t *testing.T, path string, state *State)

TestStateFile writes the given state to the path.

func UpgradeResourceState 

func UpgradeResourceState(addr addrs.AbsResourceInstance, provider providers.Interface, src *states.ResourceInstanceObjectSrc, currentSchema *configschema.Block, currentVersion uint64) (*states.ResourceInstanceObjectSrc, tfdiags.Diagnostics)

UpgradeResourceState will, if necessary, run the provider-defined upgrade logic against the given state object to make it compliant with the current schema version. This is a no-op if the given state object is already at the latest version.

If any errors occur during upgrade, error diagnostics are returned. In that case it is not safe to proceed with using the original state object.

func WritePlan 

func WritePlan(d *Plan, dst io.Writer) error

WritePlan writes a plan somewhere in a binary format.

func WriteState 

func WriteState(d *State, dst io.Writer) error

WriteState writes a state somewhere in a binary format.

Types

type ApplyGraphBuilder 

type ApplyGraphBuilder struct {
	// Config is the configuration tree that the diff was built from.
	Config *configs.Config

	// Changes describes the changes that we need apply.
	Changes *plans.Changes

	// State is the current state
	State *states.State

	// Components is a factory for the plug-in components (providers and
	// provisioners) available for use.
	Components contextComponentFactory

	// Schemas is the repository of schemas we will draw from to analyse
	// the configuration.
	Schemas *Schemas

	// Targets are resources to target. This is only required to make sure
	// unnecessary outputs aren't included in the apply graph. The plan
	// builder successfully handles targeting resources. In the future,
	// outputs should go into the diff so that this is unnecessary.
	Targets []addrs.Targetable

	// DisableReduce, if true, will not reduce the graph. Great for testing.
	DisableReduce bool

	// Destroy, if true, represents a pure destroy operation
	Destroy bool

	// Validate will do structural validation of the graph.
	Validate bool
}

ApplyGraphBuilder implements GraphBuilder and is responsible for building a graph for applying a Terraform diff.

Because the graph is built from the diff (vs. the config or state), this helps ensure that the apply-time graph doesn't modify any resources that aren't explicitly in the diff. There are other scenarios where the diff can be deviated, so this is just one layer of protection.

func (*ApplyGraphBuilder) Build 

func (b *ApplyGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics)

See GraphBuilder

func (*ApplyGraphBuilder) Steps 

func (b *ApplyGraphBuilder) Steps() []GraphTransformer

See GraphBuilder

type AttachResourceConfigTransformer 

type AttachResourceConfigTransformer struct {
	Config *configs.Config // Config is the root node in the config tree
}

AttachResourceConfigTransformer goes through the graph and attaches resource configuration structures to nodes that implement GraphNodeAttachManagedResourceConfig or GraphNodeAttachDataResourceConfig.

The attached configuration structures are directly from the configuration. If they're going to be modified, a copy should be made.

func (*AttachResourceConfigTransformer) Transform 

func (t *AttachResourceConfigTransformer) Transform(g *Graph) error

type AttachSchemaTransformer 

type AttachSchemaTransformer struct {
	Schemas *Schemas
}

AttachSchemaTransformer finds nodes that implement GraphNodeAttachResourceSchema, GraphNodeAttachProviderConfigSchema, or GraphNodeAttachProvisionerSchema, looks up the needed schemas for each and then passes them to a method implemented by the node.

func (*AttachSchemaTransformer) Transform 

func (t *AttachSchemaTransformer) Transform(g *Graph) error

type AttachStateTransformer 

type AttachStateTransformer struct {
	State *states.State // State is the root state
}

AttachStateTransformer goes through the graph and attaches state to nodes that implement the interfaces above.

func (*AttachStateTransformer) Transform 

func (t *AttachStateTransformer) Transform(g *Graph) error

type BackendState 

type BackendState struct {
	Type      string          `json:"type"`   // Backend type
	ConfigRaw json.RawMessage `json:"config"` // Backend raw config
	Hash      uint64          `json:"hash"`   // Hash of portion of configuration from config files
}

BackendState stores the configuration to connect to a remote backend.

func (*BackendState) Config 

func (s *BackendState) Config(schema *configschema.Block) (cty.Value, error)

Config decodes the type-specific configuration object using the provided schema and returns the result as a cty.Value.

An error is returned if the stored configuration does not conform to the given schema.

func (*BackendState) Empty 

func (s *BackendState) Empty() bool

Empty returns true if BackendState has no state.

func (*BackendState) ForPlan 

func (s *BackendState) ForPlan(schema *configschema.Block, workspaceName string) (*plans.Backend, error)

ForPlan produces an alternative representation of the reciever that is suitable for storing in a plan. The current workspace must additionally be provided, to be stored alongside the backend configuration.

The backend configuration schema is required in order to properly encode the backend-specific configuration settings.

func (*BackendState) SetConfig 

func (s *BackendState) SetConfig(val cty.Value, schema *configschema.Block) error

SetConfig replaces (in-place) the type-specific configuration object using the provided value and associated schema.

An error is returned if the given value does not conform to the implied type of the schema.

type BasicGraphBuilder 

type BasicGraphBuilder struct {
	Steps    []GraphTransformer
	Validate bool
	// Optional name to add to the graph debug log
	Name string
}

BasicGraphBuilder is a GraphBuilder that builds a graph out of a series of transforms and (optionally) validates the graph is a valid structure.

func (*BasicGraphBuilder) Build 

func (b *BasicGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics)

type BuiltinEvalContext 

type BuiltinEvalContext struct {
	// StopContext is the context used to track whether we're complete
	StopContext context.Context

	// PathValue is the Path that this context is operating within.
	PathValue addrs.ModuleInstance

	// Evaluator is used for evaluating expressions within the scope of this
	// eval context.
	Evaluator *Evaluator

	// Schemas is a repository of all of the schemas we should need to
	// decode configuration blocks and expressions. This must be constructed by
	// the caller to include schemas for all of the providers, resource types,
	// data sources and provisioners used by the given configuration and
	// state.
	//
	// This must not be mutated during evaluation.
	Schemas *Schemas

	// VariableValues contains the variable values across all modules. This
	// structure is shared across the entire containing context, and so it
	// may be accessed only when holding VariableValuesLock.
	// The keys of the first level of VariableValues are the string
	// representations of addrs.ModuleInstance values. The second-level keys
	// are variable names within each module instance.
	VariableValues     map[string]map[string]cty.Value
	VariableValuesLock *sync.Mutex

	Components          contextComponentFactory
	Hooks               []Hook
	InputValue          UIInput
	ProviderCache       map[string]providers.Interface
	ProviderInputConfig map[string]map[string]cty.Value
	ProviderLock        *sync.Mutex
	ProvisionerCache    map[string]provisioners.Interface
	ProvisionerLock     *sync.Mutex
	ChangesValue        *plans.ChangesSync
	StateValue          *states.SyncState
	// contains filtered or unexported fields
}

BuiltinEvalContext is an EvalContext implementation that is used by Terraform by default.

func (*BuiltinEvalContext) Changes 

func (ctx *BuiltinEvalContext) Changes() *plans.ChangesSync

func (*BuiltinEvalContext) CloseProvider 

func (ctx *BuiltinEvalContext) CloseProvider(addr addrs.ProviderConfig) error

func (*BuiltinEvalContext) CloseProvisioner 

func (ctx *BuiltinEvalContext) CloseProvisioner(n string) error

func (*BuiltinEvalContext) ConfigureProvider 

func (ctx *BuiltinEvalContext) ConfigureProvider(addr addrs.ProviderConfig, cfg cty.Value) tfdiags.Diagnostics

func (*BuiltinEvalContext) EvaluateBlock 

func (ctx *BuiltinEvalContext) EvaluateBlock(body hcl.Body, schema *configschema.Block, self addrs.Referenceable, keyData InstanceKeyEvalData) (cty.Value, hcl.Body, tfdiags.Diagnostics)

func (*BuiltinEvalContext) EvaluateExpr 

func (ctx *BuiltinEvalContext) EvaluateExpr(expr hcl.Expression, wantType cty.Type, self addrs.Referenceable) (cty.Value, tfdiags.Diagnostics)

func (*BuiltinEvalContext) EvaluationScope 

func (ctx *BuiltinEvalContext) EvaluationScope(self addrs.Referenceable, keyData InstanceKeyEvalData) *lang.Scope

func (*BuiltinEvalContext) Hook 

func (ctx *BuiltinEvalContext) Hook(fn func(Hook) (HookAction, error)) error

func (*BuiltinEvalContext) InitProvider 

func (ctx *BuiltinEvalContext) InitProvider(typeName string, addr addrs.ProviderConfig) (providers.Interface, error)

func (*BuiltinEvalContext) InitProvisioner 

func (ctx *BuiltinEvalContext) InitProvisioner(n string) (provisioners.Interface, error)

func (*BuiltinEvalContext) Input 

func (ctx *BuiltinEvalContext) Input() UIInput

func (*BuiltinEvalContext) Path 

func (ctx *BuiltinEvalContext) Path() addrs.ModuleInstance

func (*BuiltinEvalContext) Provider 

func (ctx *BuiltinEvalContext) Provider(addr addrs.AbsProviderConfig) providers.Interface

func (*BuiltinEvalContext) ProviderInput 

func (ctx *BuiltinEvalContext) ProviderInput(pc addrs.ProviderConfig) map[string]cty.Value

func (*BuiltinEvalContext) ProviderSchema 

func (ctx *BuiltinEvalContext) ProviderSchema(addr addrs.AbsProviderConfig) *ProviderSchema

func (*BuiltinEvalContext) Provisioner 

func (ctx *BuiltinEvalContext) Provisioner(n string) provisioners.Interface

func (*BuiltinEvalContext) ProvisionerSchema 

func (ctx *BuiltinEvalContext) ProvisionerSchema(n string) *configschema.Block

func (*BuiltinEvalContext) SetModuleCallArguments 

func (ctx *BuiltinEvalContext) SetModuleCallArguments(n addrs.ModuleCallInstance, vals map[string]cty.Value)

func (*BuiltinEvalContext) SetProviderInput 

func (ctx *BuiltinEvalContext) SetProviderInput(pc addrs.ProviderConfig, c map[string]cty.Value)

func (*BuiltinEvalContext) State 

func (ctx *BuiltinEvalContext) State() *states.SyncState

func (*BuiltinEvalContext) Stopped 

func (ctx *BuiltinEvalContext) Stopped() <-chan struct{}

type CBDEdgeTransformer 

type CBDEdgeTransformer struct {
	// Module and State are only needed to look up dependencies in
	// any way possible. Either can be nil if not availabile.
	Config *configs.Config
	State  *states.State

	// If configuration is present then Schemas is required in order to
	// obtain schema information from providers and provisioners so we can
	// properly resolve implicit dependencies.
	Schemas *Schemas

	// If the operation is a simple destroy, no transformation is done.
	Destroy bool
}

CBDEdgeTransformer modifies the edges of CBD nodes that went through the DestroyEdgeTransformer to have the right dependencies. There are two real tasks here:

  1. With CBD, the destroy edge is inverted: the destroy depends on the creation.

  2. A_d must depend on resources that depend on A. This is to enable the destroy to only happen once nodes that depend on A successfully update to A. Example: adding a web server updates the load balancer before deleting the old web server.

This transformer requires that a previous transformer has already forced create_before_destroy on for nodes that are depended on by explicit CBD nodes. This is the logic in ForcedCBDTransformer, though in practice we will get here by recording the CBD-ness of each change in the plan during the plan walk and then forcing the nodes into the appropriate setting during DiffTransformer when building the apply graph.

func (*CBDEdgeTransformer) Transform 

func (t *CBDEdgeTransformer) Transform(g *Graph) error

type CallbackUIOutput 

type CallbackUIOutput struct {
	OutputFn func(string)
}

func (*CallbackUIOutput) Output 

func (o *CallbackUIOutput) Output(v string)

type CloseProviderTransformer 

type CloseProviderTransformer struct{}

CloseProviderTransformer is a GraphTransformer that adds nodes to the graph that will close open provider connections that aren't needed anymore. A provider connection is not needed anymore once all depended resources in the graph are evaluated.

func (*CloseProviderTransformer) Transform 

func (t *CloseProviderTransformer) Transform(g *Graph) error

type CloseProvisionerTransformer 

type CloseProvisionerTransformer struct{}

CloseProvisionerTransformer is a GraphTransformer that adds nodes to the graph that will close open provisioner connections that aren't needed anymore. A provisioner connection is not needed anymore once all depended resources in the graph are evaluated.

func (*CloseProvisionerTransformer) Transform 

func (t *CloseProvisionerTransformer) Transform(g *Graph) error

type ConcreteProviderNodeFunc 

type ConcreteProviderNodeFunc func(*NodeAbstractProvider) dag.Vertex

ConcreteProviderNodeFunc is a callback type used to convert an abstract provider to a concrete one of some type.

type ConcreteResourceInstanceDeposedNodeFunc 

type ConcreteResourceInstanceDeposedNodeFunc func(*NodeAbstractResourceInstance, states.DeposedKey) dag.Vertex

ConcreteResourceInstanceDeposedNodeFunc is a callback type used to convert an abstract resource instance to a concrete one of some type that has an associated deposed object key.

type ConcreteResourceInstanceNodeFunc 

type ConcreteResourceInstanceNodeFunc func(*NodeAbstractResourceInstance) dag.Vertex

ConcreteResourceInstanceNodeFunc is a callback type used to convert an abstract resource instance to a concrete one of some type.

type ConcreteResourceNodeFunc 

type ConcreteResourceNodeFunc func(*NodeAbstractResource) dag.Vertex

ConcreteResourceNodeFunc is a callback type used to convert an abstract resource to a concrete one of some type.

type ConfigTransformer 

type ConfigTransformer struct {
	Concrete ConcreteResourceNodeFunc

	// Module is the module to add resources from.
	Config *configs.Config

	// Unique will only add resources that aren't already present in the graph.
	Unique bool

	// Mode will only add resources that match the given mode
	ModeFilter bool
	Mode       addrs.ResourceMode
	// contains filtered or unexported fields
}

ConfigTransformer is a GraphTransformer that adds all the resources from the configuration to the graph.

The module used to configure this transformer must be the root module.

Only resources are added to the graph. Variables, outputs, and providers must be added via other transforms.

Unlike ConfigTransformerOld, this transformer creates a graph with all resources including module resources, rather than creating module nodes that are then "flattened".

func (*ConfigTransformer) Transform 

func (t *ConfigTransformer) Transform(g *Graph) error

type Context 

type Context struct {
	// contains filtered or unexported fields
}

Context represents all the context that Terraform needs in order to perform operations on infrastructure. This structure is built using NewContext.

func NewContext 

func NewContext(opts *ContextOpts) (*Context, tfdiags.Diagnostics)

NewContext creates a new Context structure.

Once a Context is created, the caller must not access or mutate any of the objects referenced (directly or indirectly) by the ContextOpts fields.

If the returned diagnostics contains errors then the resulting context is invalid and must not be used.

func (*Context) Apply 

func (c *Context) Apply() (*states.State, tfdiags.Diagnostics)

Apply applies the changes represented by this context and returns the resulting state.

Even in the case an error is returned, the state may be returned and will potentially be partially updated. In addition to returning the resulting state, this context is updated with the latest state.

If the state is required after an error, the caller should call Context.State, rather than rely on the return value.

TODO: Apply and Refresh should either always return a state, or rely on the 

State() method. Currently the helper/resource testing framework relies
on the absence of a returned state to determine if Destroy can be
called, so that will need to be refactored before this can be changed.

func (*Context) Config 

func (c *Context) Config() *configs.Config

Config returns the configuration tree associated with this context.

func (*Context) Eval 

func (c *Context) Eval(path addrs.ModuleInstance) (*lang.Scope, tfdiags.Diagnostics)

Eval produces a scope in which expressions can be evaluated for the given module path.

This method must first evaluate any ephemeral values (input variables, local values, and output values) in the configuration. These ephemeral values are not included in the persisted state, so they must be re-computed using other values in the state before they can be properly evaluated. The updated values are retained in the main state associated with the receiving context.

This function takes no action against remote APIs but it does need access to all provider and provisioner instances in order to obtain their schemas for type checking.

The result is an evaluation scope that can be used to resolve references against the root module. If the returned diagnostics contains errors then the returned scope may be nil. If it is not nil then it may still be used to attempt expression evaluation or other analysis, but some expressions may not behave as expected.

func (*Context) Graph 

func (c *Context) Graph(typ GraphType, opts *ContextGraphOpts) (*Graph, tfdiags.Diagnostics)

Graph returns the graph used for the given operation type.

The most extensive or complex graph type is GraphTypePlan.

func (*Context) Import 

func (c *Context) Import(opts *ImportOpts) (*states.State, tfdiags.Diagnostics)

Import takes already-created external resources and brings them under Terraform management. Import requires the exact type, name, and ID of the resources to import.

This operation is idempotent. If the requested resource is already imported, no changes are made to the state.

Further, this operation also gracefully handles partial state. If during an import there is a failure, all previously imported resources remain imported.

func (*Context) Input 

func (c *Context) Input(mode InputMode) tfdiags.Diagnostics

Input asks for input to fill variables and provider configurations. This modifies the configuration in-place, so asking for Input twice may result in different UI output showing different current values.

func (*Context) Plan 

func (c *Context) Plan() (*plans.Plan, tfdiags.Diagnostics)

Plan generates an execution plan for the given context.

The execution plan encapsulates the context and can be stored in order to reinstantiate a context later for Apply.

Plan also updates the diff of this context to be the diff generated by the plan, so Apply can be called after.

func (*Context) Refresh 

func (c *Context) Refresh() (*states.State, tfdiags.Diagnostics)

Refresh goes through all the resources in the state and refreshes them to their latest state. This will update the state that this context works with, along with returning it.

Even in the case an error is returned, the state may be returned and will potentially be partially updated.

func (*Context) Schemas 

func (c *Context) Schemas() *Schemas

func (*Context) SetVariable 

func (c *Context) SetVariable(k string, v cty.Value)

SetVariable sets a variable after a context has already been built.

func (*Context) ShadowError 

func (c *Context) ShadowError() error

ShadowError returns any errors caught during a shadow operation.

A shadow operation is an operation run in parallel to a real operation that performs the same tasks using new logic on copied state. The results are compared to ensure that the new logic works the same as the old logic. The shadow never affects the real operation or return values.

The result of the shadow operation are only available through this function call after a real operation is complete.

For API consumers of Context, you can safely ignore this function completely if you have no interest in helping report experimental feature errors to Terraform maintainers. Otherwise, please call this function after every operation and report this to the user.

IMPORTANT: Shadow errors are _never_ critical: they _never_ affect the real state or result of a real operation. They are purely informational to assist in future Terraform versions being more stable. Please message this effectively to the end user.

This must be called only when no other operation is running (refresh, plan, etc.). The result can be used in parallel to any other operation running.

func (*Context) State 

func (c *Context) State() *states.State

State returns a copy of the current state associated with this context.

This cannot safely be called in parallel with any other Context function.

func (*Context) Stop 

func (c *Context) Stop()

Stop stops the running task.

Stop will block until the task completes.

func (*Context) Validate 

func (c *Context) Validate() tfdiags.Diagnostics

Validate performs semantic validation of the configuration, and returning any warnings or errors.

Syntax and structural checks are performed by the configuration loader, and so are not repeated here.

func (*Context) Variables 

func (c *Context) Variables() InputValues

Variables will return the mapping of variables that were defined for this Context. If Input was called, this mapping may be different than what was given.

type ContextGraphOpts 

type ContextGraphOpts struct {
	// If true, validates the graph structure (checks for cycles).
	Validate bool

	// Legacy graphs only: won't prune the graph
	Verbose bool
}

type ContextGraphWalker 

type ContextGraphWalker struct {
	NullGraphWalker

	// Configurable values
	Context            *Context
	State              *states.SyncState  // Used for safe concurrent access to state
	Changes            *plans.ChangesSync // Used for safe concurrent writes to changes
	Operation          walkOperation
	StopContext        context.Context
	RootVariableValues InputValues

	// This is an output. Do not set this, nor read it while a graph walk
	// is in progress.
	NonFatalDiagnostics tfdiags.Diagnostics
	// contains filtered or unexported fields
}

ContextGraphWalker is the GraphWalker implementation used with the Context struct to walk and evaluate the graph.

func (*ContextGraphWalker) EnterEvalTree 

func (w *ContextGraphWalker) EnterEvalTree(v dag.Vertex, n EvalNode) EvalNode

func (*ContextGraphWalker) EnterPath 

func (w *ContextGraphWalker) EnterPath(path addrs.ModuleInstance) EvalContext

func (*ContextGraphWalker) ExitEvalTree 

func (w *ContextGraphWalker) ExitEvalTree(v dag.Vertex, output interface{}, err error) tfdiags.Diagnostics

type ContextMeta 

type ContextMeta struct {
	Env string // Env is the state environment
}

ContextMeta is metadata about the running context. This is information that this package or structure cannot determine on its own but exposes into Terraform in various ways. This must be provided by the Context initializer.

type ContextOpts 

type ContextOpts struct {
	Config    *configs.Config
	Changes   *plans.Changes
	State     *states.State
	Targets   []addrs.Targetable
	Variables InputValues
	Meta      *ContextMeta
	Destroy   bool

	Hooks            []Hook
	Parallelism      int
	ProviderResolver providers.Resolver
	Provisioners     map[string]ProvisionerFactory

	// If non-nil, will apply as additional constraints on the provider
	// plugins that will be requested from the provider resolver.
	ProviderSHA256s    map[string][]byte
	SkipProviderVerify bool

	UIInput UIInput
}

ContextOpts are the user-configurable options to create a context with NewContext.

type CountBoundaryTransformer 

type CountBoundaryTransformer struct {
	Config *configs.Config
}

CountBoundaryTransformer adds a node that depends on everything else so that it runs last in order to clean up the state for nodes that are on the "count boundary": "foo.0" when only one exists becomes "foo"

func (*CountBoundaryTransformer) Transform 

func (t *CountBoundaryTransformer) Transform(g *Graph) error

type DataSource 

type DataSource struct {
	Name string

	// SchemaAvailable is set if the provider supports the ProviderSchema,
	// ResourceTypeSchema and DataSourceSchema methods. Although it is
	// included on each resource type, it's actually a provider-wide setting
	// that's smuggled here only because that avoids a breaking change to
	// the plugin protocol.
	SchemaAvailable bool
}

DataSource is a data source that a resource provider implements.

type DestroyEdge 

type DestroyEdge struct {
	S, T dag.Vertex
}

DestroyEdge is an edge that represents a standard "destroy" relationship: Target depends on Source because Source is destroying.

func (*DestroyEdge) Hashcode 

func (e *DestroyEdge) Hashcode() interface{}

func (*DestroyEdge) Source 

func (e *DestroyEdge) Source() dag.Vertex

func (*DestroyEdge) Target 

func (e *DestroyEdge) Target() dag.Vertex

type DestroyEdgeTransformer 

type DestroyEdgeTransformer struct {
	// These are needed to properly build the graph of dependencies
	// to determine what a destroy node depends on. Any of these can be nil.
	Config *configs.Config
	State  *states.State

	// If configuration is present then Schemas is required in order to
	// obtain schema information from providers and provisioners in order
	// to properly resolve implicit dependencies.
	Schemas *Schemas
}

DestroyEdgeTransformer is a GraphTransformer that creates the proper references for destroy resources. Destroy resources are more complex in that they must be depend on the destruction of resources that in turn depend on the CREATION of the node being destroy.

That is complicated. Visually: 

B_d -> A_d -> A -> B

Notice that A destroy depends on B destroy, while B create depends on A create. They're inverted. This must be done for example because often dependent resources will block parent resources from deleting. Concrete example: VPC with subnets, the VPC can't be deleted while there are still subnets.

func (*DestroyEdgeTransformer) Transform 

func (t *DestroyEdgeTransformer) Transform(g *Graph) error

type DestroyOutputTransformer 

type DestroyOutputTransformer struct {
}

DestroyOutputTransformer is a GraphTransformer that adds nodes to delete outputs during destroy. We need to do this to ensure that no stale outputs are ever left in the state.

func (*DestroyOutputTransformer) Transform 

func (t *DestroyOutputTransformer) Transform(g *Graph) error

type DestroyPlanGraphBuilder 

type DestroyPlanGraphBuilder struct {
	// Config is the configuration tree to build the plan from.
	Config *configs.Config

	// State is the current state
	State *states.State

	// Components is a factory for the plug-in components (providers and
	// provisioners) available for use.
	Components contextComponentFactory

	// Schemas is the repository of schemas we will draw from to analyse
	// the configuration.
	Schemas *Schemas

	// Targets are resources to target
	Targets []addrs.Targetable

	// Validate will do structural validation of the graph.
	Validate bool
}

DestroyPlanGraphBuilder implements GraphBuilder and is responsible for planning a pure-destroy.

Planning a pure destroy operation is simple because we can ignore most ordering configuration and simply reverse the state.

func (*DestroyPlanGraphBuilder) Build 

func (b *DestroyPlanGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics)

See GraphBuilder

func (*DestroyPlanGraphBuilder) Steps 

func (b *DestroyPlanGraphBuilder) Steps() []GraphTransformer

See GraphBuilder

type DestroyValueReferenceTransformer 

type DestroyValueReferenceTransformer struct{}

DestroyReferenceTransformer is a GraphTransformer that reverses the edges for locals and outputs that depend on other nodes which will be removed during destroy. If a destroy node is evaluated before the local or output value, it will be removed from the state, and the later interpolation will fail.

func (*DestroyValueReferenceTransformer) Transform 

func (t *DestroyValueReferenceTransformer) Transform(g *Graph) error

type Diff 

type Diff struct {
	// Modules contains all the modules that have a diff
	Modules []*ModuleDiff
}

Diff tracks the changes that are necessary to apply a configuration to an existing infrastructure.

func (*Diff) AddModule 

func (d *Diff) AddModule(path addrs.ModuleInstance) *ModuleDiff

AddModule adds the module with the given path to the diff.

This should be the preferred method to add module diffs since it allows us to optimize lookups later as well as control sorting.

func (*Diff) DeepCopy 

func (d *Diff) DeepCopy() *Diff

DeepCopy performs a deep copy of all parts of the Diff, making the resulting Diff safe to use without modifying this one.

func (*Diff) Empty 

func (d *Diff) Empty() bool

Empty returns true if the diff has no changes.

func (*Diff) Equal 

func (d *Diff) Equal(d2 *Diff) bool

Equal compares two diffs for exact equality.

This is different from the Same comparison that is supported which checks for operation equality taking into account computed values. Equal instead checks for exact equality.

func (*Diff) ModuleByPath 

func (d *Diff) ModuleByPath(path addrs.ModuleInstance) *ModuleDiff

ModuleByPath is used to lookup the module diff for the given path. This should be the preferred lookup mechanism as it allows for future lookup optimizations.

func (*Diff) Prune 

func (d *Diff) Prune()

Prune cleans out unused structures in the diff without affecting the behavior of the diff at all.

This is not safe to call concurrently. This is safe to call on a nil Diff.

func (*Diff) RootModule 

func (d *Diff) RootModule() *ModuleDiff

RootModule returns the ModuleState for the root module

func (*Diff) String 

func (d *Diff) String() string

type DiffAttrType 

type DiffAttrType byte

DiffAttrType is an enum type that says whether a resource attribute diff is an input attribute (comes from the configuration) or an output attribute (comes as a result of applying the configuration). An example input would be "ami" for AWS and an example output would be "private_ip". 

const (
	DiffAttrUnknown DiffAttrType = iota
	DiffAttrInput
	DiffAttrOutput
)

type DiffChangeType 

type DiffChangeType byte

DiffChangeType is an enum with the kind of changes a diff has planned. 

const (
	DiffInvalid DiffChangeType = iota
	DiffNone
	DiffCreate
	DiffUpdate
	DiffDestroy
	DiffDestroyCreate

	// DiffRefresh is only used in the UI for displaying diffs.
	// Managed resource reads never appear in plan, and when data source
	// reads appear they are represented as DiffCreate in core before
	// transforming to DiffRefresh in the UI layer.
	DiffRefresh // TODO: Actually use DiffRefresh in core too, for less confusion
)

type DiffTransformer 

type DiffTransformer struct {
	Concrete ConcreteResourceInstanceNodeFunc
	State    *states.State
	Changes  *plans.Changes
}

DiffTransformer is a GraphTransformer that adds graph nodes representing each of the resource changes described in the given Changes object.

func (*DiffTransformer) Transform 

func (t *DiffTransformer) Transform(g *Graph) error

type EphemeralState 

type EphemeralState struct {
	// ConnInfo is used for the providers to export information which is
	// used to connect to the resource for provisioning. For example,
	// this could contain SSH or WinRM credentials.
	ConnInfo map[string]string `json:"-"`

	// Type is used to specify the resource type for this instance. This is only
	// required for import operations (as documented). If the documentation
	// doesn't state that you need to set this, then don't worry about
	// setting it.
	Type string `json:"-"`
}

EphemeralState is used for transient state that is only kept in-memory

func (*EphemeralState) DeepCopy 

func (e *EphemeralState) DeepCopy() *EphemeralState

type EvalApply 

type EvalApply struct {
	Addr           addrs.ResourceInstance
	Config         *configs.Resource
	Dependencies   []addrs.Referenceable
	State          **states.ResourceInstanceObject
	Change         **plans.ResourceInstanceChange
	ProviderAddr   addrs.AbsProviderConfig
	Provider       *providers.Interface
	ProviderSchema **ProviderSchema
	Output         **states.ResourceInstanceObject
	CreateNew      *bool
	Error          *error
}

EvalApply is an EvalNode implementation that writes the diff to the full diff.

func (*EvalApply) Eval 

func (n *EvalApply) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalApplyPost 

type EvalApplyPost struct {
	Addr  addrs.ResourceInstance
	Gen   states.Generation
	State **states.ResourceInstanceObject
	Error *error
}

EvalApplyPost is an EvalNode implementation that does the post-Apply work

func (*EvalApplyPost) Eval 

func (n *EvalApplyPost) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalApplyPre 

type EvalApplyPre struct {
	Addr   addrs.ResourceInstance
	Gen    states.Generation
	State  **states.ResourceInstanceObject
	Change **plans.ResourceInstanceChange
}

EvalApplyPre is an EvalNode implementation that does the pre-Apply work

func (*EvalApplyPre) Eval 

func (n *EvalApplyPre) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalApplyProvisioners 

type EvalApplyProvisioners struct {
	Addr           addrs.ResourceInstance
	State          **states.ResourceInstanceObject
	ResourceConfig *configs.Resource
	CreateNew      *bool
	Error          *error

	// When is the type of provisioner to run at this point
	When configs.ProvisionerWhen
}

EvalApplyProvisioners is an EvalNode implementation that executes the provisioners for a resource.

TODO(mitchellh): This should probably be split up into a more fine-grained ApplyProvisioner (single) that is looped over.

func (*EvalApplyProvisioners) Eval 

func (n *EvalApplyProvisioners) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalCheckModuleRemoved 

type EvalCheckModuleRemoved struct {
	Addr addrs.ModuleInstance
}

EvalCheckModuleRemoved is an EvalNode implementation that verifies that a module has been removed from the state as expected.

func (*EvalCheckModuleRemoved) Eval 

func (n *EvalCheckModuleRemoved) Eval(ctx EvalContext) (interface{}, error)

type EvalCheckPlannedChange 

type EvalCheckPlannedChange struct {
	Addr           addrs.ResourceInstance
	ProviderAddr   addrs.AbsProviderConfig
	ProviderSchema **ProviderSchema

	// We take ResourceInstanceChange objects here just because that's what's
	// convenient to pass in from the evaltree implementation, but we really
	// only look at the "After" value of each change.
	Planned, Actual **plans.ResourceInstanceChange
}

EvalCheckPlannedChange is an EvalNode implementation that produces errors if the _actual_ expected value is not compatible with what was recorded in the plan.

Errors here are most often indicative of a bug in the provider, so our error messages will report with that in mind. It's also possible that there's a bug in Terraform's Core's own "proposed new value" code in EvalDiff.

func (*EvalCheckPlannedChange) Eval 

func (n *EvalCheckPlannedChange) Eval(ctx EvalContext) (interface{}, error)

type EvalCheckPreventDestroy 

type EvalCheckPreventDestroy struct {
	Addr   addrs.ResourceInstance
	Config *configs.Resource
	Change **plans.ResourceInstanceChange
}

EvalPreventDestroy is an EvalNode implementation that returns an error if a resource has PreventDestroy configured and the diff would destroy the resource.

func (*EvalCheckPreventDestroy) Eval 

func (n *EvalCheckPreventDestroy) Eval(ctx EvalContext) (interface{}, error)

type EvalCloseProvider 

type EvalCloseProvider struct {
	Addr addrs.ProviderConfig
}

EvalCloseProvider is an EvalNode implementation that closes provider connections that aren't needed anymore.

func (*EvalCloseProvider) Eval 

func (n *EvalCloseProvider) Eval(ctx EvalContext) (interface{}, error)

type EvalCloseProvisioner 

type EvalCloseProvisioner struct {
	Name string
}

EvalCloseProvisioner is an EvalNode implementation that closes provisioner connections that aren't needed anymore.

func (*EvalCloseProvisioner) Eval 

func (n *EvalCloseProvisioner) Eval(ctx EvalContext) (interface{}, error)

type EvalConfigBlock 

type EvalConfigBlock struct {
	Config         *hcl.Body
	Schema         *configschema.Block
	SelfAddr       addrs.Referenceable
	Output         *cty.Value
	ExpandedConfig *hcl.Body
	ContinueOnErr  bool
}

EvalConfigBlock is an EvalNode implementation that takes a raw configuration block and evaluates any expressions within it.

ExpandedConfig is populated with the result of expanding any "dynamic" blocks in the given body, which can be useful for extracting correct source location information for specific attributes in the result.

func (*EvalConfigBlock) Eval 

func (n *EvalConfigBlock) Eval(ctx EvalContext) (interface{}, error)

type EvalConfigExpr 

type EvalConfigExpr struct {
	Expr     hcl.Expression
	SelfAddr addrs.Referenceable
	Output   *cty.Value
}

EvalConfigExpr is an EvalNode implementation that takes a raw configuration expression and evaluates it.

func (*EvalConfigExpr) Eval 

func (n *EvalConfigExpr) Eval(ctx EvalContext) (interface{}, error)

type EvalConfigProvider 

type EvalConfigProvider struct {
	Addr     addrs.ProviderConfig
	Provider *providers.Interface
	Config   *configs.Provider
}

EvalConfigProvider is an EvalNode implementation that configures a provider that is already initialized and retrieved.

func (*EvalConfigProvider) Eval 

func (n *EvalConfigProvider) Eval(ctx EvalContext) (interface{}, error)

type EvalContext 

type EvalContext interface {
	// Stopped returns a channel that is closed when evaluation is stopped
	// via Terraform.Context.Stop()
	Stopped() <-chan struct{}

	// Path is the current module path.
	Path() addrs.ModuleInstance

	// Hook is used to call hook methods. The callback is called for each
	// hook and should return the hook action to take and the error.
	Hook(func(Hook) (HookAction, error)) error

	// Input is the UIInput object for interacting with the UI.
	Input() UIInput

	// InitProvider initializes the provider with the given type and address, and
	// returns the implementation of the resource provider or an error.
	//
	// It is an error to initialize the same provider more than once.
	InitProvider(typ string, addr addrs.ProviderConfig) (providers.Interface, error)

	// Provider gets the provider instance with the given address (already
	// initialized) or returns nil if the provider isn't initialized.
	//
	// This method expects an _absolute_ provider configuration address, since
	// resources in one module are able to use providers from other modules.
	// InitProvider must've been called on the EvalContext of the module
	// that owns the given provider before calling this method.
	Provider(addrs.AbsProviderConfig) providers.Interface

	// ProviderSchema retrieves the schema for a particular provider, which
	// must have already been initialized with InitProvider.
	//
	// This method expects an _absolute_ provider configuration address, since
	// resources in one module are able to use providers from other modules.
	ProviderSchema(addrs.AbsProviderConfig) *ProviderSchema

	// CloseProvider closes provider connections that aren't needed anymore.
	CloseProvider(addrs.ProviderConfig) error

	// ConfigureProvider configures the provider with the given
	// configuration. This is a separate context call because this call
	// is used to store the provider configuration for inheritance lookups
	// with ParentProviderConfig().
	ConfigureProvider(addrs.ProviderConfig, cty.Value) tfdiags.Diagnostics

	// ProviderInput and SetProviderInput are used to configure providers
	// from user input.
	ProviderInput(addrs.ProviderConfig) map[string]cty.Value
	SetProviderInput(addrs.ProviderConfig, map[string]cty.Value)

	// InitProvisioner initializes the provisioner with the given name and
	// returns the implementation of the resource provisioner or an error.
	//
	// It is an error to initialize the same provisioner more than once.
	InitProvisioner(string) (provisioners.Interface, error)

	// Provisioner gets the provisioner instance with the given name (already
	// initialized) or returns nil if the provisioner isn't initialized.
	Provisioner(string) provisioners.Interface

	// ProvisionerSchema retrieves the main configuration schema for a
	// particular provisioner, which must have already been initialized with
	// InitProvisioner.
	ProvisionerSchema(string) *configschema.Block

	// CloseProvisioner closes provisioner connections that aren't needed
	// anymore.
	CloseProvisioner(string) error

	// EvaluateBlock takes the given raw configuration block and associated
	// schema and evaluates it to produce a value of an object type that
	// conforms to the implied type of the schema.
	//
	// The "self" argument is optional. If given, it is the referenceable
	// address that the name "self" should behave as an alias for when
	// evaluating. Set this to nil if the "self" object should not be available.
	//
	// The "key" argument is also optional. If given, it is the instance key
	// of the current object within the multi-instance container it belongs
	// to. For example, on a resource block with "count" set this should be
	// set to a different addrs.IntKey for each instance created from that
	// block. Set this to addrs.NoKey if not appropriate.
	//
	// The returned body is an expanded version of the given body, with any
	// "dynamic" blocks replaced with zero or more static blocks. This can be
	// used to extract correct source location information about attributes of
	// the returned object value.
	EvaluateBlock(body hcl.Body, schema *configschema.Block, self addrs.Referenceable, keyData InstanceKeyEvalData) (cty.Value, hcl.Body, tfdiags.Diagnostics)

	// EvaluateExpr takes the given HCL expression and evaluates it to produce
	// a value.
	//
	// The "self" argument is optional. If given, it is the referenceable
	// address that the name "self" should behave as an alias for when
	// evaluating. Set this to nil if the "self" object should not be available.
	EvaluateExpr(expr hcl.Expression, wantType cty.Type, self addrs.Referenceable) (cty.Value, tfdiags.Diagnostics)

	// EvaluationScope returns a scope that can be used to evaluate reference
	// addresses in this context.
	EvaluationScope(self addrs.Referenceable, keyData InstanceKeyEvalData) *lang.Scope

	// SetModuleCallArguments defines values for the variables of a particular
	// child module call.
	//
	// Calling this function multiple times has merging behavior, keeping any
	// previously-set keys that are not present in the new map.
	SetModuleCallArguments(addrs.ModuleCallInstance, map[string]cty.Value)

	// Changes returns the writer object that can be used to write new proposed
	// changes into the global changes set.
	Changes() *plans.ChangesSync

	// State returns a wrapper object that provides safe concurrent access to
	// the global state.
	State() *states.SyncState
}

EvalContext is the interface that is given to eval nodes to execute.

type EvalCountFixZeroOneBoundaryGlobal 

type EvalCountFixZeroOneBoundaryGlobal struct {
	Config *configs.Config
}

EvalCountFixZeroOneBoundaryGlobal is an EvalNode that fixes up the state when there is a resource count with zero/one boundary, i.e. fixing a resource named "aws_instance.foo" to "aws_instance.foo.0" and vice-versa.

This works on the global state.

func (*EvalCountFixZeroOneBoundaryGlobal) Eval 

func (n *EvalCountFixZeroOneBoundaryGlobal) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalDeleteLocal 

type EvalDeleteLocal struct {
	Addr addrs.LocalValue
}

EvalDeleteLocal is an EvalNode implementation that deletes a Local value from the state. Locals aren't persisted, but we don't need to evaluate them during destroy.

func (*EvalDeleteLocal) Eval 

func (n *EvalDeleteLocal) Eval(ctx EvalContext) (interface{}, error)

type EvalDeleteOutput 

type EvalDeleteOutput struct {
	Addr addrs.OutputValue
}

EvalDeleteOutput is an EvalNode implementation that deletes an output from the state.

func (*EvalDeleteOutput) Eval 

func (n *EvalDeleteOutput) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalDeposeState 

type EvalDeposeState struct {
	Addr addrs.ResourceInstance

	// ForceKey, if a value other than states.NotDeposed, will be used as the
	// key for the newly-created deposed object that results from this action.
	// If set to states.NotDeposed (the zero value), a new unique key will be
	// allocated.
	ForceKey states.DeposedKey

	// OutputKey, if non-nil, will be written with the deposed object key that
	// was generated for the object. This can then be passed to
	// EvalUndeposeState.Key so it knows which deposed instance to forget.
	OutputKey *states.DeposedKey
}

EvalDeposeState is an EvalNode implementation that moves the current object for the given instance to instead be a deposed object, leaving the instance with no current object. This is used at the beginning of a create-before-destroy replace action so that the create can create while preserving the old state of the to-be-destroyed object.

func (*EvalDeposeState) Eval 

func (n *EvalDeposeState) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalDiff 

type EvalDiff struct {
	Addr           addrs.ResourceInstance
	Config         *configs.Resource
	Provider       *providers.Interface
	ProviderAddr   addrs.AbsProviderConfig
	ProviderSchema **ProviderSchema
	State          **states.ResourceInstanceObject
	PreviousDiff   **plans.ResourceInstanceChange

	// CreateBeforeDestroy is set if either the resource's own config sets
	// create_before_destroy explicitly or if dependencies have forced the
	// resource to be handled as create_before_destroy in order to avoid
	// a dependency cycle.
	CreateBeforeDestroy bool

	OutputChange **plans.ResourceInstanceChange
	OutputValue  *cty.Value
	OutputState  **states.ResourceInstanceObject

	Stub bool
}

EvalDiff is an EvalNode implementation that detects changes for a given resource instance.

func (*EvalDiff) Eval 

func (n *EvalDiff) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalDiffDestroy 

type EvalDiffDestroy struct {
	Addr         addrs.ResourceInstance
	DeposedKey   states.DeposedKey
	State        **states.ResourceInstanceObject
	ProviderAddr addrs.AbsProviderConfig

	Output      **plans.ResourceInstanceChange
	OutputState **states.ResourceInstanceObject
}

EvalDiffDestroy is an EvalNode implementation that returns a plain destroy diff.

func (*EvalDiffDestroy) Eval 

func (n *EvalDiffDestroy) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalEarlyExitError 

type EvalEarlyExitError struct{}

EvalEarlyExitError is a special error return value that can be returned by eval nodes that does an early exit.

func (EvalEarlyExitError) Error 

func (EvalEarlyExitError) Error() string

type EvalForgetResourceState 

type EvalForgetResourceState struct {
	Addr addrs.Resource
}

EvalForgetResourceState is an EvalNode implementation that prunes out an empty resource-level state for a given resource address, or produces an error if it isn't empty after all.

This should be the last action taken for a resource that has been removed from the configuration altogether, to clean up the leftover husk of the resource in the state after other EvalNodes have destroyed and removed all of the instances and instance objects beneath it.

func (*EvalForgetResourceState) Eval 

func (n *EvalForgetResourceState) Eval(ctx EvalContext) (interface{}, error)

type EvalGetProvider 

type EvalGetProvider struct {
	Addr   addrs.AbsProviderConfig
	Output *providers.Interface

	// If non-nil, Schema will be updated after eval to refer to the
	// schema of the provider.
	Schema **ProviderSchema
}

EvalGetProvider is an EvalNode implementation that retrieves an already initialized provider instance for the given name.

Unlike most eval nodes, this takes an _absolute_ provider configuration, because providers can be passed into and inherited between modules. Resource nodes must therefore know the absolute path of the provider they will use, which is usually accomplished by implementing interface GraphNodeProviderConsumer.

func (*EvalGetProvider) Eval 

func (n *EvalGetProvider) Eval(ctx EvalContext) (interface{}, error)

type EvalGetProvisioner 

type EvalGetProvisioner struct {
	Name   string
	Output *provisioners.Interface
	Schema **configschema.Block
}

EvalGetProvisioner is an EvalNode implementation that retrieves an already initialized provisioner instance for the given name.

func (*EvalGetProvisioner) Eval 

func (n *EvalGetProvisioner) Eval(ctx EvalContext) (interface{}, error)

type EvalGraphBuilder 

type EvalGraphBuilder struct {
	// Config is the configuration tree.
	Config *configs.Config

	// State is the current state
	State *states.State

	// Components is a factory for the plug-in components (providers and
	// provisioners) available for use.
	Components contextComponentFactory

	// Schemas is the repository of schemas we will draw from to analyse
	// the configuration.
	Schemas *Schemas
}

EvalGraphBuilder implements GraphBuilder and constructs a graph suitable for evaluating in-memory values (input variables, local values, output values) in the state without any other side-effects.

This graph is used only in weird cases, such as the "terraform console" CLI command, where we need to evaluate expressions against the state without taking any other actions.

The generated graph will include nodes for providers, resources, etc just to allow indirect dependencies to be resolved, but these nodes will not take any actions themselves since we assume that their parts of the state, if any, are already complete.

Although the providers are never configured, they must still be available in order to obtain schema information used for type checking, etc.

func (*EvalGraphBuilder) Build 

func (b *EvalGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics)

See GraphBuilder

func (*EvalGraphBuilder) Steps 

func (b *EvalGraphBuilder) Steps() []GraphTransformer

See GraphBuilder

type EvalIf 

type EvalIf struct {
	If   func(EvalContext) (bool, error)
	Then EvalNode
	Else EvalNode
}

EvalIf is an EvalNode that is a conditional.

func (*EvalIf) Eval 

func (n *EvalIf) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalImportState 

type EvalImportState struct {
	Addr     addrs.ResourceInstance
	Provider *providers.Interface
	ID       string
	Output   *[]providers.ImportedResource
}

EvalImportState is an EvalNode implementation that performs an ImportState operation on a provider. This will return the imported states but won't modify any actual state.

func (*EvalImportState) Eval 

func (n *EvalImportState) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalImportStateVerify 

type EvalImportStateVerify struct {
	Addr  addrs.ResourceInstance
	State **states.ResourceInstanceObject
}

EvalImportStateVerify verifies the state after ImportState and after the refresh to make sure it is non-nil and valid.

func (*EvalImportStateVerify) Eval 

func (n *EvalImportStateVerify) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalInitProvider 

type EvalInitProvider struct {
	TypeName string
	Addr     addrs.ProviderConfig
}

EvalInitProvider is an EvalNode implementation that initializes a provider and returns nothing. The provider can be retrieved again with the EvalGetProvider node.

func (*EvalInitProvider) Eval 

func (n *EvalInitProvider) Eval(ctx EvalContext) (interface{}, error)

type EvalInitProvisioner 

type EvalInitProvisioner struct {
	Name string
}

EvalInitProvisioner is an EvalNode implementation that initializes a provisioner and returns nothing. The provisioner can be retrieved again with the EvalGetProvisioner node.

func (*EvalInitProvisioner) Eval 

func (n *EvalInitProvisioner) Eval(ctx EvalContext) (interface{}, error)

type EvalLocal 

type EvalLocal struct {
	Addr addrs.LocalValue
	Expr hcl.Expression
}

EvalLocal is an EvalNode implementation that evaluates the expression for a local value and writes it into a transient part of the state.

func (*EvalLocal) Eval 

func (n *EvalLocal) Eval(ctx EvalContext) (interface{}, error)

type EvalMaybeRestoreDeposedObject 

type EvalMaybeRestoreDeposedObject struct {
	Addr addrs.ResourceInstance

	// Key is a pointer to the deposed object key that should be forgotten
	// from the state, which must be non-nil.
	Key *states.DeposedKey
}

EvalMaybeRestoreDeposedObject is an EvalNode implementation that will restore a particular deposed object of the specified resource instance to be the "current" object if and only if the instance doesn't currently have a current object.

This is intended for use when the create leg of a create before destroy fails with no partial new object: if we didn't take any action, the user would be left in the unfortunate situation of having no current object and the previously-workign object now deposed. This EvalNode causes a better outcome by restoring things to how they were before the replace operation began.

The create operation may have produced a partial result even though it failed and it's important that we don't "forget" that state, so in that situation the prior object remains deposed and the partial new object remains the current object, allowing the situation to hopefully be improved in a subsequent run.

func (*EvalMaybeRestoreDeposedObject) Eval 

func (n *EvalMaybeRestoreDeposedObject) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalMaybeTainted 

type EvalMaybeTainted struct {
	Addr   addrs.ResourceInstance
	Gen    states.Generation
	Change **plans.ResourceInstanceChange
	State  **states.ResourceInstanceObject
	Error  *error

	// If StateOutput is not nil, its referent will be assigned either the same
	// pointer as State or a new object with its status set as Tainted,
	// depending on whether an error is given and if this was a create action.
	StateOutput **states.ResourceInstanceObject
}

EvalMaybeTainted is an EvalNode that takes the planned change, new value, and possible error from an apply operation and produces a new instance object marked as tainted if it appears that a create operation has failed.

This EvalNode never returns an error, to ensure that a subsequent EvalNode can still record the possibly-tainted object in the state.

func (*EvalMaybeTainted) Eval 

func (n *EvalMaybeTainted) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalModuleCallArgument 

type EvalModuleCallArgument struct {
	Addr   addrs.InputVariable
	Config *configs.Variable
	Expr   hcl.Expression

	// If this flag is set, any diagnostics are discarded and this operation
	// will always succeed, though may produce an unknown value in the
	// event of an error.
	IgnoreDiagnostics bool

	Values map[string]cty.Value
}

EvalModuleCallArgument is an EvalNode implementation that produces the value for a particular variable as will be used by a child module instance.

The result is written into the map given in Values, with its key set to the local name of the variable, disregarding the module instance address. Any existing values in that map are deleted first. This weird interface is a result of trying to be convenient for use with EvalContext.SetModuleCallArguments, which expects a map to merge in with any existing arguments.

func (*EvalModuleCallArgument) Eval 

func (n *EvalModuleCallArgument) Eval(ctx EvalContext) (interface{}, error)

type EvalNode 

type EvalNode interface {
	// Eval evaluates this node with the given context. The second parameter
	// are the argument values. These will match in order and 1-1 with the
	// results of the Args() return value.
	Eval(EvalContext) (interface{}, error)
}

EvalNode is the interface that must be implemented by graph nodes to evaluate/execute.

func CloseProviderEvalTree 

func CloseProviderEvalTree(addr addrs.AbsProviderConfig) EvalNode

CloseProviderEvalTree returns the evaluation tree for closing provider connections that aren't needed anymore.

func EvalFilter 

func EvalFilter(node EvalNode, fn EvalNodeFilterFunc) EvalNode

EvalFilter runs the filter on the given node and returns the final filtered value. This should be called rather than checking the EvalNode directly since this will properly handle EvalNodeFilterables.

func ProviderEvalTree 

func ProviderEvalTree(n *NodeApplyableProvider, config *configs.Provider) EvalNode

ProviderEvalTree returns the evaluation tree for initializing and configuring providers.

type EvalNodeFilterFunc 

type EvalNodeFilterFunc func(EvalNode) EvalNode

EvalNodeFilterFunc is the callback used to replace a node with another to node. To not do the replacement, just return the input node.

func EvalNodeFilterOp 

func EvalNodeFilterOp(op walkOperation) EvalNodeFilterFunc

EvalNodeFilterOp returns a filter function that filters nodes that include themselves in specific operations.

type EvalNodeFilterable 

type EvalNodeFilterable interface {
	EvalNode
	Filter(EvalNodeFilterFunc)
}

EvalNodeFilterable is an interface that can be implemented by EvalNodes to allow filtering of sub-elements. Note that this isn't a common thing to implement and you probably don't need it.

type EvalNodeOpFilterable 

type EvalNodeOpFilterable interface {
	IncludeInOp(walkOperation) bool
}

EvalNodeOpFilterable is an interface that EvalNodes can implement to be filterable by the operation that is being run on Terraform.

type EvalNoop 

type EvalNoop struct{}

EvalNoop is an EvalNode that does nothing.

func (EvalNoop) Eval 

func (EvalNoop) Eval(EvalContext) (interface{}, error)

type EvalOpFilter 

type EvalOpFilter struct {
	// Ops is the list of operations to include this node in.
	Ops []walkOperation

	// Node is the node to execute
	Node EvalNode
}

EvalOpFilter is an EvalNode implementation that is a proxy to another node but filters based on the operation.

func (*EvalOpFilter) Eval 

func (n *EvalOpFilter) Eval(ctx EvalContext) (interface{}, error)

TODO: test

func (*EvalOpFilter) IncludeInOp 

func (n *EvalOpFilter) IncludeInOp(op walkOperation) bool

EvalNodeOpFilterable impl.

type EvalReadData 

type EvalReadData struct {
	Addr           addrs.ResourceInstance
	Config         *configs.Resource
	Dependencies   []addrs.Referenceable
	Provider       *providers.Interface
	ProviderAddr   addrs.AbsProviderConfig
	ProviderSchema **ProviderSchema

	// Planned is set when dealing with data resources that were deferred to
	// the apply walk, to let us see what was planned. If this is set, the
	// evaluation of the config is required to produce a wholly-known
	// configuration which is consistent with the partial object included
	// in this planned change.
	Planned **plans.ResourceInstanceChange

	// ForcePlanRead, if true, overrides the usual behavior of immediately
	// reading from the data source where possible, instead forcing us to
	// _always_ generate a plan. This is used during the plan walk, since we
	// mustn't actually apply anything there. (The resulting state doesn't
	// get persisted)
	ForcePlanRead bool

	// The result from this EvalNode has a few different possibilities
	// depending on the input:
	// - If Planned is nil then we assume we're aiming to _produce_ the plan,
	//   and so the following two outcomes are possible:
	//     - OutputChange.Action is plans.NoOp and OutputState is the complete
	//       result of reading from the data source. This is the easy path.
	//     - OutputChange.Action is plans.Read and OutputState is a planned
	//       object placeholder (states.ObjectPlanned). In this case, the
	//       returned change must be recorded in the overral changeset and
	//       eventually passed to another instance of this struct during the
	//       apply walk.
	// - If Planned is non-nil then we assume we're aiming to complete a
	//   planned read from an earlier plan walk. In this case the only possible
	//   non-error outcome is to set Output.Action (if non-nil) to a plans.NoOp
	//   change and put the complete resulting state in OutputState, ready to
	//   be saved in the overall state and used for expression evaluation.
	OutputChange      **plans.ResourceInstanceChange
	OutputValue       *cty.Value
	OutputConfigValue *cty.Value
	OutputState       **states.ResourceInstanceObject
}

EvalReadData is an EvalNode implementation that deals with the main part of the data resource lifecycle: either actually reading from the data source or generating a plan to do so.

func (*EvalReadData) Eval 

func (n *EvalReadData) Eval(ctx EvalContext) (interface{}, error)

type EvalReadDataApply 

type EvalReadDataApply struct {
	Addr            addrs.ResourceInstance
	Provider        *providers.Interface
	ProviderAddr    addrs.AbsProviderConfig
	ProviderSchema  **ProviderSchema
	Output          **states.ResourceInstanceObject
	Config          *configs.Resource
	Change          **plans.ResourceInstanceChange
	StateReferences []addrs.Referenceable
}

EvalReadDataApply is an EvalNode implementation that executes a data resource's ReadDataApply method to read data from the data source.

func (*EvalReadDataApply) Eval 

func (n *EvalReadDataApply) Eval(ctx EvalContext) (interface{}, error)

type EvalReadDiff 

type EvalReadDiff struct {
	Addr           addrs.ResourceInstance
	DeposedKey     states.DeposedKey
	ProviderSchema **ProviderSchema
	Change         **plans.ResourceInstanceChange
}

EvalReadDiff is an EvalNode implementation that retrieves the planned change for a particular resource instance object.

func (*EvalReadDiff) Eval 

func (n *EvalReadDiff) Eval(ctx EvalContext) (interface{}, error)

type EvalReadState 

type EvalReadState struct {
	// Addr is the address of the instance to read state for.
	Addr addrs.ResourceInstance

	// ProviderSchema is the schema for the provider given in Provider.
	ProviderSchema **ProviderSchema

	// Provider is the provider that will subsequently perform actions on
	// the the state object. This is used to perform any schema upgrades
	// that might be required to prepare the stored data for use.
	Provider *providers.Interface

	// Output will be written with a pointer to the retrieved object.
	Output **states.ResourceInstanceObject
}

EvalReadState is an EvalNode implementation that reads the current object for a specific instance in the state.

func (*EvalReadState) Eval 

func (n *EvalReadState) Eval(ctx EvalContext) (interface{}, error)

type EvalReadStateDeposed 

type EvalReadStateDeposed struct {
	// Addr is the address of the instance to read state for.
	Addr addrs.ResourceInstance

	// Key identifies which deposed object we will read.
	Key states.DeposedKey

	// ProviderSchema is the schema for the provider given in Provider.
	ProviderSchema **ProviderSchema

	// Provider is the provider that will subsequently perform actions on
	// the the state object. This is used to perform any schema upgrades
	// that might be required to prepare the stored data for use.
	Provider *providers.Interface

	// Output will be written with a pointer to the retrieved object.
	Output **states.ResourceInstanceObject
}

EvalReadStateDeposed is an EvalNode implementation that reads the deposed InstanceState for a specific resource out of the state

func (*EvalReadStateDeposed) Eval 

func (n *EvalReadStateDeposed) Eval(ctx EvalContext) (interface{}, error)

type EvalReduceDiff 

type EvalReduceDiff struct {
	Addr      addrs.ResourceInstance
	InChange  **plans.ResourceInstanceChange
	Destroy   bool
	OutChange **plans.ResourceInstanceChange
}

EvalReduceDiff is an EvalNode implementation that takes a planned resource instance change as might be produced by EvalDiff or EvalDiffDestroy and "simplifies" it to a single atomic action to be performed by a specific graph node.

Callers must specify whether they are a destroy node or a regular apply node. If the result is NoOp then the given change requires no action for the specific graph node calling this and so evaluation of the that graph node should exit early and take no action.

The object written to OutChange may either be identical to InChange or a new change object derived from InChange. Because of the former case, the caller must not mutate the object returned in OutChange.

func (*EvalReduceDiff) Eval 

func (n *EvalReduceDiff) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalRefresh 

type EvalRefresh struct {
	Addr           addrs.ResourceInstance
	ProviderAddr   addrs.AbsProviderConfig
	Provider       *providers.Interface
	ProviderSchema **ProviderSchema
	State          **states.ResourceInstanceObject
	Output         **states.ResourceInstanceObject
}

EvalRefresh is an EvalNode implementation that does a refresh for a resource.

func (*EvalRefresh) Eval 

func (n *EvalRefresh) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalRequireState 

type EvalRequireState struct {
	State **states.ResourceInstanceObject
}

EvalRequireState is an EvalNode implementation that exits early if the given object is null.

func (*EvalRequireState) Eval 

func (n *EvalRequireState) Eval(ctx EvalContext) (interface{}, error)

type EvalReturnError 

type EvalReturnError struct {
	Error *error
}

EvalReturnError is an EvalNode implementation that returns an error if it is present.

This is useful for scenarios where an error has been captured by another EvalNode (like EvalApply) for special EvalTree-based error handling, and that handling has completed, so the error should be returned normally.

func (*EvalReturnError) Eval 

func (n *EvalReturnError) Eval(ctx EvalContext) (interface{}, error)

type EvalSequence 

type EvalSequence struct {
	Nodes []EvalNode
}

EvalSequence is an EvalNode that evaluates in sequence.

func (*EvalSequence) Eval 

func (n *EvalSequence) Eval(ctx EvalContext) (interface{}, error)

func (*EvalSequence) Filter 

func (n *EvalSequence) Filter(fn EvalNodeFilterFunc)

EvalNodeFilterable impl.

type EvalSetModuleCallArguments 

type EvalSetModuleCallArguments struct {
	Module addrs.ModuleCallInstance
	Values map[string]cty.Value
}

EvalSetModuleCallArguments is an EvalNode implementation that sets values for arguments of a child module call, for later retrieval during expression evaluation.

func (*EvalSetModuleCallArguments) Eval 

func (n *EvalSetModuleCallArguments) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalUpdateStateHook 

type EvalUpdateStateHook struct{}

EvalUpdateStateHook is an EvalNode implementation that calls the PostStateUpdate hook with the current state.

func (*EvalUpdateStateHook) Eval 

func (n *EvalUpdateStateHook) Eval(ctx EvalContext) (interface{}, error)

type EvalValidateCount 

type EvalValidateCount struct {
	Resource *configs.Resource
}

EvalValidateCount is an EvalNode implementation that validates the count of a resource.

func (*EvalValidateCount) Eval 

func (n *EvalValidateCount) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalValidateProvider 

type EvalValidateProvider struct {
	Addr     addrs.ProviderConfig
	Provider *providers.Interface
	Config   *configs.Provider
}

EvalValidateProvider is an EvalNode implementation that validates a provider configuration.

func (*EvalValidateProvider) Eval 

func (n *EvalValidateProvider) Eval(ctx EvalContext) (interface{}, error)

type EvalValidateProvisioner 

type EvalValidateProvisioner struct {
	ResourceAddr       addrs.Resource
	Provisioner        *provisioners.Interface
	Schema             **configschema.Block
	Config             *configs.Provisioner
	ResourceHasCount   bool
	ResourceHasForEach bool
}

EvalValidateProvisioner is an EvalNode implementation that validates the configuration of a provisioner belonging to a resource. The provisioner config is expected to contain the merged connection configurations.

func (*EvalValidateProvisioner) Eval 

func (n *EvalValidateProvisioner) Eval(ctx EvalContext) (interface{}, error)

type EvalValidateResource 

type EvalValidateResource struct {
	Addr           addrs.Resource
	Provider       *providers.Interface
	ProviderSchema **ProviderSchema
	Config         *configs.Resource

	// IgnoreWarnings means that warnings will not be passed through. This allows
	// "just-in-time" passes of validation to continue execution through warnings.
	IgnoreWarnings bool

	// ConfigVal, if non-nil, will be updated with the value resulting from
	// evaluating the given configuration body. Since validation is performed
	// very early, this value is likely to contain lots of unknown values,
	// but its type will conform to the schema of the resource type associated
	// with the resource instance being validated.
	ConfigVal *cty.Value
}

EvalValidateResource is an EvalNode implementation that validates the configuration of a resource.

func (*EvalValidateResource) Eval 

func (n *EvalValidateResource) Eval(ctx EvalContext) (interface{}, error)

type EvalValidateSelfRef 

type EvalValidateSelfRef struct {
	Addr           addrs.Referenceable
	Config         hcl.Body
	ProviderSchema **ProviderSchema
}

EvalValidateSelfRef is an EvalNode implementation that checks to ensure that expressions within a particular referencable block do not reference that same block.

func (*EvalValidateSelfRef) Eval 

func (n *EvalValidateSelfRef) Eval(ctx EvalContext) (interface{}, error)

type EvalWriteDiff 

type EvalWriteDiff struct {
	Addr           addrs.ResourceInstance
	DeposedKey     states.DeposedKey
	ProviderSchema **ProviderSchema
	Change         **plans.ResourceInstanceChange
}

EvalWriteDiff is an EvalNode implementation that saves a planned change for an instance object into the set of global planned changes.

func (*EvalWriteDiff) Eval 

func (n *EvalWriteDiff) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalWriteOutput 

type EvalWriteOutput struct {
	Addr      addrs.OutputValue
	Sensitive bool
	Expr      hcl.Expression
	// ContinueOnErr allows interpolation to fail during Input
	ContinueOnErr bool
}

EvalWriteOutput is an EvalNode implementation that writes the output for the given name to the current state.

func (*EvalWriteOutput) Eval 

func (n *EvalWriteOutput) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalWriteResourceState 

type EvalWriteResourceState struct {
	Addr         addrs.Resource
	Config       *configs.Resource
	ProviderAddr addrs.AbsProviderConfig
}

EvalWriteResourceState is an EvalNode implementation that ensures that a suitable resource-level state record is present in the state, if that's required for the "each mode" of that resource.

This is important primarily for the situation where count = 0, since this eval is the only change we get to set the resource "each mode" to list in that case, allowing expression evaluation to see it as a zero-element list rather than as not set at all.

func (*EvalWriteResourceState) Eval 

func (n *EvalWriteResourceState) Eval(ctx EvalContext) (interface{}, error)

TODO: test

type EvalWriteState 

type EvalWriteState struct {
	// Addr is the address of the instance to read state for.
	Addr addrs.ResourceInstance

	// State is the object state to save.
	State **states.ResourceInstanceObject

	// ProviderSchema is the schema for the provider given in ProviderAddr.
	ProviderSchema **ProviderSchema

	// ProviderAddr is the address of the provider configuration that
	// produced the given object.
	ProviderAddr addrs.AbsProviderConfig
}

EvalWriteState is an EvalNode implementation that saves the given object as the current object for the selected resource instance.

func (*EvalWriteState) Eval 

func (n *EvalWriteState) Eval(ctx EvalContext) (interface{}, error)

type EvalWriteStateDeposed 

type EvalWriteStateDeposed struct {
	// Addr is the address of the instance to read state for.
	Addr addrs.ResourceInstance

	// Key indicates which deposed object to write to.
	Key states.DeposedKey

	// State is the object state to save.
	State **states.ResourceInstanceObject

	// ProviderSchema is the schema for the provider given in ProviderAddr.
	ProviderSchema **ProviderSchema

	// ProviderAddr is the address of the provider configuration that
	// produced the given object.
	ProviderAddr addrs.AbsProviderConfig
}

EvalWriteStateDeposed is an EvalNode implementation that writes an InstanceState out to the Deposed list of a resource in the state.

func (*EvalWriteStateDeposed) Eval 

func (n *EvalWriteStateDeposed) Eval(ctx EvalContext) (interface{}, error)

type Evaluator 

type Evaluator struct {
	// Operation defines what type of operation this evaluator is being used
	// for.
	Operation walkOperation

	// Meta is contextual metadata about the current operation.
	Meta *ContextMeta

	// Config is the root node in the configuration tree.
	Config *configs.Config

	// VariableValues is a map from variable names to their associated values,
	// within the module indicated by ModulePath. VariableValues is modified
	// concurrently, and so it must be accessed only while holding
	// VariableValuesLock.
	//
	// The first map level is string representations of addr.ModuleInstance
	// values, while the second level is variable names.
	VariableValues     map[string]map[string]cty.Value
	VariableValuesLock *sync.Mutex

	// Schemas is a repository of all of the schemas we should need to
	// evaluate expressions. This must be constructed by the caller to
	// include schemas for all of the providers, resource types, data sources
	// and provisioners used by the given configuration and state.
	//
	// This must not be mutated during evaluation.
	Schemas *Schemas

	// State is the current state, embedded in a wrapper that ensures that
	// it can be safely accessed and modified concurrently.
	State *states.SyncState

	// Changes is the set of proposed changes, embedded in a wrapper that
	// ensures they can be safely accessed and modified concurrently.
	Changes *plans.ChangesSync
}

Evaluator provides the necessary contextual data for evaluating expressions for a particular walk operation.

func (*Evaluator) Scope 

func (e *Evaluator) Scope(data lang.Data, self addrs.Referenceable) *lang.Scope

Scope creates an evaluation scope for the given module path and optional resource.

If the "self" argument is nil then the "self" object is not available in evaluated expressions. Otherwise, it behaves as an alias for the given address.

type ExpandTransform 

type ExpandTransform struct {
	Builder GraphBuilder
}

ExpandTransform is a transformer that does a subgraph expansion at graph transform time (vs. at eval time). The benefit of earlier subgraph expansion is that errors with the graph build can be detected at an earlier stage.

func (*ExpandTransform) Transform 

func (t *ExpandTransform) Transform(v dag.Vertex) (dag.Vertex, error)

type ForcedCBDTransformer 

type ForcedCBDTransformer struct {
}

ForcedCBDTransformer detects when a particular CBD-able graph node has dependencies with another that has create_before_destroy set that require it to be forced on, and forces it on.

This must be used in the plan graph builder to ensure that create_before_destroy settings are properly propagated before constructing the planned changes. This requires that the plannable resource nodes implement GraphNodeDestroyerCBD.

func (*ForcedCBDTransformer) Transform 

func (t *ForcedCBDTransformer) Transform(g *Graph) error

type Graph 

type Graph struct {
	// Graph is the actual DAG. This is embedded so you can call the DAG
	// methods directly.
	dag.AcyclicGraph

	// Path is the path in the module tree that this Graph represents.
	Path addrs.ModuleInstance
	// contains filtered or unexported fields
}

Graph represents the graph that Terraform uses to represent resources and their dependencies.

func (*Graph) DirectedGraph 

func (g *Graph) DirectedGraph() dag.Grapher

func (*Graph) Walk 

func (g *Graph) Walk(walker GraphWalker) tfdiags.Diagnostics

Walk walks the graph with the given walker for callbacks. The graph will be walked with full parallelism, so the walker should expect to be called in concurrently.

type GraphBuilder 

type GraphBuilder interface {
	// Build builds the graph for the given module path. It is up to
	// the interface implementation whether this build should expand
	// the graph or not.
	Build(addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics)
}

GraphBuilder is an interface that can be implemented and used with Terraform to build the graph that Terraform walks.

func ValidateGraphBuilder 

func ValidateGraphBuilder(p *PlanGraphBuilder) GraphBuilder

ValidateGraphBuilder creates the graph for the validate operation.

ValidateGraphBuilder is based on the PlanGraphBuilder. We do this so that we only have to validate what we'd normally plan anyways. The PlanGraphBuilder given will be modified so it shouldn't be used for anything else after calling this function.

type GraphNodeAttachDestroyer 

type GraphNodeAttachDestroyer interface {
	// AttachDestroyNode takes a destroy node and saves a reference to that
	// node in the receiver, so it can later check the status of
	// CreateBeforeDestroy().
	AttachDestroyNode(n GraphNodeDestroyerCBD)
}

GraphNodeAttachDestroyer is implemented by applyable nodes that have a companion destroy node. This allows the creation node to look up the status of the destroy node and determine if it needs to depose the existing state, or replace it. If a node is not marked as create-before-destroy in the configuration, but a dependency forces that status, only the destroy node will be aware of that status.

type GraphNodeAttachProvider 

type GraphNodeAttachProvider interface {
	// Must be implemented to determine the path for the configuration
	GraphNodeSubPath

	// ProviderName with no module prefix. Example: "aws".
	ProviderAddr() addrs.AbsProviderConfig

	// Sets the configuration
	AttachProvider(*configs.Provider)
}

GraphNodeAttachProvider is an interface that must be implemented by nodes that want provider configurations attached.

type GraphNodeAttachProviderConfigSchema 

type GraphNodeAttachProviderConfigSchema interface {
	GraphNodeProvider

	AttachProviderConfigSchema(*configschema.Block)
}

GraphNodeAttachProviderConfigSchema is an interface implemented by node types that need a provider configuration schema attached.

type GraphNodeAttachProvisionerSchema 

type GraphNodeAttachProvisionerSchema interface {
	ProvisionedBy() []string

	// SetProvisionerSchema is called during transform for each provisioner
	// type returned from ProvisionedBy, providing the configuration schema
	// for each provisioner in turn. The implementer should save these for
	// later use in evaluating provisioner configuration blocks.
	AttachProvisionerSchema(name string, schema *configschema.Block)
}

GraphNodeAttachProvisionerSchema is an interface implemented by node types that need one or more provisioner schemas attached.

type GraphNodeAttachResourceConfig 

type GraphNodeAttachResourceConfig interface {
	GraphNodeResource

	// Sets the configuration
	AttachResourceConfig(*configs.Resource)
}

GraphNodeAttachResourceConfig is an interface that must be implemented by nodes that want resource configurations attached.

type GraphNodeAttachResourceSchema 

type GraphNodeAttachResourceSchema interface {
	GraphNodeResource
	GraphNodeProviderConsumer

	AttachResourceSchema(schema *configschema.Block, version uint64)
}

GraphNodeAttachResourceSchema is an interface implemented by node types that need a resource schema attached.

type GraphNodeAttachResourceState 

type GraphNodeAttachResourceState interface {
	GraphNodeResourceInstance

	// Sets the state
	AttachResourceState(*states.Resource)
}

GraphNodeAttachResourceState is an interface that can be implemented to request that a ResourceState is attached to the node.

Due to a historical naming inconsistency, the type ResourceState actually represents the state for a particular _instance_, while InstanceState represents the values for that instance during a particular phase (e.g. primary vs. deposed). Consequently, GraphNodeAttachResourceState is supported only for nodes that represent resource instances, even though the name might suggest it is for containing resources.

type GraphNodeCloseProvider 

type GraphNodeCloseProvider interface {
	GraphNodeSubPath
	CloseProviderAddr() addrs.AbsProviderConfig
}

GraphNodeCloseProvider is an interface that nodes that can be a close provider must implement. The CloseProviderName returned is the name of the provider they satisfy.

type GraphNodeCloseProvisioner 

type GraphNodeCloseProvisioner interface {
	CloseProvisionerName() string
}

GraphNodeCloseProvisioner is an interface that nodes that can be a close provisioner must implement. The CloseProvisionerName returned is the name of the provisioner they satisfy.

type GraphNodeCreator 

type GraphNodeCreator interface {
	// CreateAddr is the address of the resource being created or updated
	CreateAddr() *addrs.AbsResourceInstance
}

GraphNodeCreator must be implemented by nodes that create OR update resources.

type GraphNodeDeposedResourceInstanceObject 

type GraphNodeDeposedResourceInstanceObject interface {
	DeposedInstanceObjectKey() states.DeposedKey
}

type GraphNodeDeposer 

type GraphNodeDeposer interface {
	// SetPreallocatedDeposedKey will be called during graph construction
	// if a particular node must use a pre-allocated deposed key if/when it
	// "deposes" the current object of its associated resource instance.
	SetPreallocatedDeposedKey(key states.DeposedKey)
}

GraphNodeDeposer is an optional interface implemented by graph nodes that might create a single new deposed object for a specific associated resource instance, allowing a caller to optionally pre-allocate a DeposedKey for it.

type GraphNodeDestroyer 

type GraphNodeDestroyer interface {
	dag.Vertex

	// DestroyAddr is the address of the resource that is being
	// destroyed by this node. If this returns nil, then this node
	// is not destroying anything.
	DestroyAddr() *addrs.AbsResourceInstance
}

GraphNodeDestroyer must be implemented by nodes that destroy resources.

type GraphNodeDestroyerCBD 

type GraphNodeDestroyerCBD interface {
	// CreateBeforeDestroy returns true if this node represents a node
	// that is doing a CBD.
	CreateBeforeDestroy() bool

	// ModifyCreateBeforeDestroy is called when the CBD state of a node
	// is changed dynamically. This can return an error if this isn't
	// allowed.
	ModifyCreateBeforeDestroy(bool) error
}

GraphNodeDestroyerCBD must be implemented by nodes that might be create-before-destroy destroyers, or might plan a create-before-destroy action.

type GraphNodeDynamicExpandable 

type GraphNodeDynamicExpandable interface {
	DynamicExpand(EvalContext) (*Graph, error)
}

GraphNodeDynamicExpandable is an interface that nodes can implement to signal that they can be expanded at eval-time (hence dynamic). These nodes are given the eval context and are expected to return a new subgraph.

type GraphNodeEvalable 

type GraphNodeEvalable interface {
	EvalTree() EvalNode
}

GraphNodeEvalable is the interface that graph nodes must implement to enable valuation.

type GraphNodeExpandable 

type GraphNodeExpandable interface {
	Expand(GraphBuilder) (GraphNodeSubgraph, error)
}

GraphNodeExapndable is an interface that nodes can implement to signal that they can be expanded. Expanded nodes turn into GraphNodeSubgraph nodes within the graph.

type GraphNodeProvider 

type GraphNodeProvider interface {
	GraphNodeSubPath
	ProviderAddr() addrs.AbsProviderConfig
	Name() string
}

GraphNodeProvider is an interface that nodes that can be a provider must implement.

ProviderAddr returns the address of the provider configuration this satisfies, which is relative to the path returned by method Path().

Name returns the full name of the provider in the config.

type GraphNodeProviderConsumer 

type GraphNodeProviderConsumer interface {
	// ProvidedBy returns the address of the provider configuration the node
	// refers to. If the returned "exact" value is true, this address will
	// be taken exactly. If "exact" is false, a provider configuration from
	// an ancestor module may be selected instead.
	ProvidedBy() (addr addrs.AbsProviderConfig, exact bool)
	// Set the resolved provider address for this resource.
	SetProvider(addrs.AbsProviderConfig)
}

GraphNodeProviderConsumer is an interface that nodes that require a provider must implement. ProvidedBy must return the address of the provider to use, which will be resolved to a configuration either in the same module or in an ancestor module, with the resulting absolute address passed to SetProvider.

type GraphNodeProvisioner 

type GraphNodeProvisioner interface {
	ProvisionerName() string
}

GraphNodeProvisioner is an interface that nodes that can be a provisioner must implement. The ProvisionerName returned is the name of the provisioner they satisfy.

type GraphNodeProvisionerConsumer 

type GraphNodeProvisionerConsumer interface {
	ProvisionedBy() []string
}

GraphNodeProvisionerConsumer is an interface that nodes that require a provisioner must implement. ProvisionedBy must return the names of the provisioners to use.

type GraphNodeReferenceOutside 

type GraphNodeReferenceOutside interface {
	// ReferenceOutside returns a path in which any references from this node
	// are resolved.
	ReferenceOutside() (selfPath, referencePath addrs.ModuleInstance)
}

GraphNodeReferenceOutside is an interface that can optionally be implemented. A node that implements it can specify that its own referenceable addresses and/or the addresses it references are in a different module than the node itself.

Any referenceable addresses returned by ReferenceableAddrs are interpreted relative to the returned selfPath.

Any references returned by References are interpreted relative to the returned referencePath.

It is valid but not required for either of these paths to match what is returned by method Path, though if both match the main Path then there is no reason to implement this method.

The primary use-case for this is the nodes representing module input variables, since their expressions are resolved in terms of their calling module, but they are still referenced from their own module.

type GraphNodeReferenceable 

type GraphNodeReferenceable interface {
	GraphNodeSubPath

	// ReferenceableAddrs returns a list of addresses through which this can be
	// referenced.
	ReferenceableAddrs() []addrs.Referenceable
}

GraphNodeReferenceable must be implemented by any node that represents a Terraform thing that can be referenced (resource, module, etc.).

Even if the thing has no name, this should return an empty list. By implementing this and returning a non-nil result, you say that this CAN be referenced and other methods of referencing may still be possible (such as by path!)

type GraphNodeReferencer 

type GraphNodeReferencer interface {
	GraphNodeSubPath

	// References returns a list of references made by this node, which
	// include both a referenced address and source location information for
	// the reference.
	References() []*addrs.Reference
}

GraphNodeReferencer must be implemented by nodes that reference other Terraform items and therefore depend on them.

type GraphNodeResource 

type GraphNodeResource interface {
	ResourceAddr() addrs.AbsResource
}

GraphNodeResource is implemented by any nodes that represent a resource. The type of operation cannot be assumed, only that this node represents the given resource.

type GraphNodeResourceInstance 

type GraphNodeResourceInstance interface {
	ResourceInstanceAddr() addrs.AbsResourceInstance
}

GraphNodeResourceInstance is implemented by any nodes that represent a resource instance. A single resource may have multiple instances if, for example, the "count" or "for_each" argument is used for it in configuration.

type GraphNodeSubPath 

type GraphNodeSubPath interface {
	Path() addrs.ModuleInstance
}

GraphNodeSubPath says that a node is part of a graph with a different path, and the context should be adjusted accordingly.

type GraphNodeSubgraph 

type GraphNodeSubgraph interface {
	Subgraph() dag.Grapher
}

GraphNodeSubgraph is an interface a node can implement if it has a larger subgraph that should be walked.

type GraphNodeTargetDownstream 

type GraphNodeTargetDownstream interface {
	TargetDownstream(targeted, untargeted *dag.Set) bool
}

GraphNodeTargetDownstream is an interface for graph nodes that need to be remain present under targeting if any of their dependencies are targeted. TargetDownstream is called with the set of vertices that are direct dependencies for the node, and it should return true if the node must remain in the graph in support of those dependencies.

This is used in situations where the dependency edges are representing an ordering relationship but the dependency must still be visited if its dependencies are visited. This is true for outputs, for example, since they must get updated if any of their dependent resources get updated, which would not normally be true if one of their dependencies were targeted.

type GraphNodeTargetable 

type GraphNodeTargetable interface {
	SetTargets([]addrs.Targetable)
}

GraphNodeTargetable is an interface for graph nodes to implement when they need to be told about incoming targets. This is useful for nodes that need to respect targets as they dynamically expand. Note that the list of targets provided will contain every target provided, and each implementing graph node must filter this list to targets considered relevant.

type GraphTransformer 

type GraphTransformer interface {
	Transform(*Graph) error
}

GraphTransformer is the interface that transformers implement. This interface is only for transforms that need entire graph visibility.

func GraphTransformIf 

func GraphTransformIf(f func() bool, then GraphTransformer) GraphTransformer

GraphTransformIf is a helper function that conditionally returns a GraphTransformer given. This is useful for calling inline a sequence of transforms without having to split it up into multiple append() calls.

func GraphTransformMulti 

func GraphTransformMulti(ts ...GraphTransformer) GraphTransformer

GraphTransformMulti combines multiple graph transformers into a single GraphTransformer that runs all the individual graph transformers.

func TransformProviders 

func TransformProviders(providers []string, concrete ConcreteProviderNodeFunc, config *configs.Config) GraphTransformer

type GraphType 

type GraphType byte

GraphType is an enum of the type of graph to create with a Context. The values of the constants may change so they shouldn't be depended on; always use the constant name. 

const (
	GraphTypeInvalid GraphType = 0
	GraphTypeLegacy  GraphType = iota
	GraphTypeRefresh
	GraphTypePlan
	GraphTypePlanDestroy
	GraphTypeApply
	GraphTypeValidate
	GraphTypeEval // only visits in-memory elements such as variables, locals, and outputs.
)

func (GraphType) String 

func (i GraphType) String() string

type GraphVertexTransformer 

type GraphVertexTransformer interface {
	Transform(dag.Vertex) (dag.Vertex, error)
}

GraphVertexTransformer is an interface that transforms a single Vertex within with graph. This is a specialization of GraphTransformer that makes it easy to do vertex replacement.

The GraphTransformer that runs through the GraphVertexTransformers is VertexTransformer.

type GraphWalker 

type GraphWalker interface {
	EnterPath(addrs.ModuleInstance) EvalContext
	ExitPath(addrs.ModuleInstance)
	EnterVertex(dag.Vertex)
	ExitVertex(dag.Vertex, tfdiags.Diagnostics)
	EnterEvalTree(dag.Vertex, EvalNode) EvalNode
	ExitEvalTree(dag.Vertex, interface{}, error) tfdiags.Diagnostics
}

GraphWalker is an interface that can be implemented that when used with Graph.Walk will invoke the given callbacks under certain events.

type Hook 

type Hook interface {
	// PreApply and PostApply are called before and after an action for a
	// single instance is applied. The error argument in PostApply is the
	// error, if any, that was returned from the provider Apply call itself.
	PreApply(addr addrs.AbsResourceInstance, gen states.Generation, action plans.Action, priorState, plannedNewState cty.Value) (HookAction, error)
	PostApply(addr addrs.AbsResourceInstance, gen states.Generation, newState cty.Value, err error) (HookAction, error)

	// PreDiff and PostDiff are called before and after a provider is given
	// the opportunity to customize the proposed new state to produce the
	// planned new state.
	PreDiff(addr addrs.AbsResourceInstance, gen states.Generation, priorState, proposedNewState cty.Value) (HookAction, error)
	PostDiff(addr addrs.AbsResourceInstance, gen states.Generation, action plans.Action, priorState, plannedNewState cty.Value) (HookAction, error)

	// The provisioning hooks signal both the overall start end end of
	// provisioning for a particular instance and of each of the individual
	// configured provisioners for each instance. The sequence of these
	// for a given instance might look something like this:
	//
	//          PreProvisionInstance(aws_instance.foo[1], ...)
	//      PreProvisionInstanceStep(aws_instance.foo[1], "file")
	//     PostProvisionInstanceStep(aws_instance.foo[1], "file", nil)
	//      PreProvisionInstanceStep(aws_instance.foo[1], "remote-exec")
	//               ProvisionOutput(aws_instance.foo[1], "remote-exec", "Installing foo...")
	//               ProvisionOutput(aws_instance.foo[1], "remote-exec", "Configuring bar...")
	//     PostProvisionInstanceStep(aws_instance.foo[1], "remote-exec", nil)
	//         PostProvisionInstance(aws_instance.foo[1], ...)
	//
	// ProvisionOutput is called with output sent back by the provisioners.
	// This will be called multiple times as output comes in, with each call
	// representing one line of output. It cannot control whether the
	// provisioner continues running.
	PreProvisionInstance(addr addrs.AbsResourceInstance, state cty.Value) (HookAction, error)
	PostProvisionInstance(addr addrs.AbsResourceInstance, state cty.Value) (HookAction, error)
	PreProvisionInstanceStep(addr addrs.AbsResourceInstance, typeName string) (HookAction, error)
	PostProvisionInstanceStep(addr addrs.AbsResourceInstance, typeName string, err error) (HookAction, error)
	ProvisionOutput(addr addrs.AbsResourceInstance, typeName string, line string)

	// PreRefresh and PostRefresh are called before and after a single
	// resource state is refreshed, respectively.
	PreRefresh(addr addrs.AbsResourceInstance, gen states.Generation, priorState cty.Value) (HookAction, error)
	PostRefresh(addr addrs.AbsResourceInstance, gen states.Generation, priorState cty.Value, newState cty.Value) (HookAction, error)

	// PreImportState and PostImportState are called before and after
	// (respectively) each state import operation for a given resource address.
	PreImportState(addr addrs.AbsResourceInstance, importID string) (HookAction, error)
	PostImportState(addr addrs.AbsResourceInstance, imported []providers.ImportedResource) (HookAction, error)

	// PostStateUpdate is called each time the state is updated. It receives
	// a deep copy of the state, which it may therefore access freely without
	// any need for locks to protect from concurrent writes from the caller.
	PostStateUpdate(new *states.State) (HookAction, error)
}

Hook is the interface that must be implemented to hook into various parts of Terraform, allowing you to inspect or change behavior at runtime.

There are MANY hook points into Terraform. If you only want to implement some hook points, but not all (which is the likely case), then embed the NilHook into your struct, which implements all of the interface but does nothing. Then, override only the functions you want to implement.

type HookAction 

type HookAction byte

HookAction is an enum of actions that can be taken as a result of a hook callback. This allows you to modify the behavior of Terraform at runtime. 

const (
	// HookActionContinue continues with processing as usual.
	HookActionContinue HookAction = iota

	// HookActionHalt halts immediately: no more hooks are processed
	// and the action that Terraform was about to take is cancelled.
	HookActionHalt
)

type ImportGraphBuilder 

type ImportGraphBuilder struct {
	// ImportTargets are the list of resources to import.
	ImportTargets []*ImportTarget

	// Module is a configuration to build the graph from. See ImportOpts.Config.
	Config *configs.Config

	// Components is the factory for our available plugin components.
	Components contextComponentFactory

	// Schemas is the repository of schemas we will draw from to analyse
	// the configuration.
	Schemas *Schemas
}

ImportGraphBuilder implements GraphBuilder and is responsible for building a graph for importing resources into Terraform. This is a much, much simpler graph than a normal configuration graph.

func (*ImportGraphBuilder) Build 

func (b *ImportGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics)

Build builds the graph according to the steps returned by Steps.

func (*ImportGraphBuilder) Steps 

func (b *ImportGraphBuilder) Steps() []GraphTransformer

Steps returns the ordered list of GraphTransformers that must be executed to build a complete graph.

type ImportOpts 

type ImportOpts struct {
	// Targets are the targets to import
	Targets []*ImportTarget

	// Config is optional, and specifies a config tree that will be loaded
	// into the graph and evaluated. This is the source for provider
	// configurations.
	Config *configs.Config
}

ImportOpts are used as the configuration for Import.

type ImportProviderValidateTransformer 

type ImportProviderValidateTransformer struct{}

ImportProviderValidateTransformer is a GraphTransformer that goes through the providers in the graph and validates that they only depend on variables.

func (*ImportProviderValidateTransformer) Transform 

func (t *ImportProviderValidateTransformer) Transform(g *Graph) error

type ImportStateTransformer 

type ImportStateTransformer struct {
	Targets []*ImportTarget
}

ImportStateTransformer is a GraphTransformer that adds nodes to the graph to represent the imports we want to do for resources.

func (*ImportStateTransformer) Transform 

func (t *ImportStateTransformer) Transform(g *Graph) error

type ImportTarget 

type ImportTarget struct {
	// Addr is the address for the resource instance that the new object should
	// be imported into.
	Addr addrs.AbsResourceInstance

	// ID is the ID of the resource to import. This is resource-specific.
	ID string

	// ProviderAddr is the address of the provider that should handle the import.
	ProviderAddr addrs.AbsProviderConfig
}

ImportTarget is a single resource to import.

type InputMode 

type InputMode byte

InputMode defines what sort of input will be asked for when Input is called on Context. 

const (
	// InputModeVar asks for all variables
	InputModeVar InputMode = 1 << iota

	// InputModeVarUnset asks for variables which are not set yet.
	// InputModeVar must be set for this to have an effect.
	InputModeVarUnset

	// InputModeProvider asks for provider variables
	InputModeProvider

	// InputModeStd is the standard operating mode and asks for both variables
	// and providers.
	InputModeStd = InputModeVar | InputModeProvider
)

type InputOpts 

type InputOpts struct {
	// Id is a unique ID for the question being asked that might be
	// used for logging or to look up a prior answered question.
	Id string

	// Query is a human-friendly question for inputting this value.
	Query string

	// Description is a description about what this option is. Be wary
	// that this will probably be in a terminal so split lines as you see
	// necessary.
	Description string

	// Default will be the value returned if no data is entered.
	Default string
}

InputOpts are options for asking for input.

type InputValue 

type InputValue struct {
	Value      cty.Value
	SourceType ValueSourceType

	// SourceRange provides source location information for values whose
	// SourceType is either ValueFromConfig or ValueFromFile. It is not
	// populated for other source types, and so should not be used.
	SourceRange tfdiags.SourceRange
}

InputValue represents a value for a variable in the root module, provided as part of the definition of an operation.

func (*InputValue) GoString 

func (v *InputValue) GoString() string

type InputValues 

type InputValues map[string]*InputValue

InputValues is a map of InputValue instances.

func DefaultVariableValues 

func DefaultVariableValues(configs map[string]*configs.Variable) InputValues

DefaultVariableValues returns an InputValues map representing the default values specified for variables in the given configuration map.

func InputValuesFromCaller 

func InputValuesFromCaller(vals map[string]cty.Value) InputValues

InputValuesFromCaller turns the given map of naked values into an InputValues that attributes each value to "a caller", using the source type ValueFromCaller. This is primarily useful for testing purposes.

This should not be used as a general way to convert map[string]cty.Value into InputValues, since in most real cases we want to set a suitable other SourceType and possibly SourceRange value.

func (InputValues) HasValues 

func (vv InputValues) HasValues(vals map[string]cty.Value) bool

HasValues returns true if the reciever has the same values as in the given map, disregarding the source types and source ranges.

Values are compared using the cty "RawEquals" method, which means that unknown values can be considered equal to one another if they are of the same type.

func (InputValues) Identical 

func (vv InputValues) Identical(other InputValues) bool

Identical returns true if the given InputValues has the same values, source types, and source ranges as the receiver.

Values are compared using the cty "RawEquals" method, which means that unknown values can be considered equal to one another if they are of the same type.

This method is primarily for testing. For most practical purposes, it's better to use SameValues or HasValues.

func (InputValues) JustValues 

func (vv InputValues) JustValues() map[string]cty.Value

JustValues returns a map that just includes the values, discarding the source information.

func (InputValues) Override 

func (vv InputValues) Override(others ...InputValues) InputValues

Override merges the given value maps with the receiver, overriding any conflicting keys so that the latest definition wins.

func (InputValues) SameValues 

func (vv InputValues) SameValues(other InputValues) bool

SameValues returns true if the given InputValues has the same values as the receiever, disregarding the source types and source ranges.

Values are compared using the cty "RawEquals" method, which means that unknown values can be considered equal to one another if they are of the same type.

type InstanceDiff 

type InstanceDiff struct {
	Attributes     map[string]*ResourceAttrDiff
	Destroy        bool
	DestroyDeposed bool
	DestroyTainted bool

	// Meta is a simple K/V map that is stored in a diff and persisted to
	// plans but otherwise is completely ignored by Terraform core. It is
	// meant to be used for additional data a resource may want to pass through.
	// The value here must only contain Go primitives and collections.
	Meta map[string]interface{}
	// contains filtered or unexported fields
}

InstanceDiff is the diff of a resource from some state to another.

func NewInstanceDiff 

func NewInstanceDiff() *InstanceDiff

func (*InstanceDiff) Apply 

func (d *InstanceDiff) Apply(attrs map[string]string, schema *configschema.Block) (map[string]string, error)

Apply applies the diff to the provided flatmapped attributes, returning the new instance attributes.

This method is intended for shimming old subsystems that still use this legacy diff type to work with the new-style types.

func (*InstanceDiff) ApplyToValue 

func (d *InstanceDiff) ApplyToValue(base cty.Value, schema *configschema.Block) (cty.Value, error)

ApplyToValue merges the receiver into the given base value, returning a new value that incorporates the planned changes. The given value must conform to the given schema, or this method will panic.

This method is intended for shimming old subsystems that still use this legacy diff type to work with the new-style types.

func (*InstanceDiff) ChangeType 

func (d *InstanceDiff) ChangeType() DiffChangeType

ChangeType returns the DiffChangeType represented by the diff for this single instance.

func (*InstanceDiff) Copy 

func (d *InstanceDiff) Copy() (*InstanceDiff, error)

func (*InstanceDiff) CopyAttributes 

func (d *InstanceDiff) CopyAttributes() map[string]*ResourceAttrDiff

Safely copies the Attributes map

func (*InstanceDiff) DeepCopy 

func (d *InstanceDiff) DeepCopy() *InstanceDiff

DeepCopy performs a deep copy of all parts of the InstanceDiff

func (*InstanceDiff) DelAttribute 

func (d *InstanceDiff) DelAttribute(key string)

func (*InstanceDiff) Empty 

func (d *InstanceDiff) Empty() bool

Empty returns true if this diff encapsulates no changes.

func (*InstanceDiff) Equal 

func (d *InstanceDiff) Equal(d2 *InstanceDiff) bool

Equal compares two diffs for exact equality.

This is different from the Same comparison that is supported which checks for operation equality taking into account computed values. Equal instead checks for exact equality.

func (*InstanceDiff) GetAttribute 

func (d *InstanceDiff) GetAttribute(key string) (*ResourceAttrDiff, bool)

func (*InstanceDiff) GetAttributesLen 

func (d *InstanceDiff) GetAttributesLen() int

func (*InstanceDiff) GetDestroy 

func (d *InstanceDiff) GetDestroy() bool

func (*InstanceDiff) GetDestroyDeposed 

func (d *InstanceDiff) GetDestroyDeposed() bool

func (*InstanceDiff) GetDestroyTainted 

func (d *InstanceDiff) GetDestroyTainted() bool

func (*InstanceDiff) GoString 

func (d *InstanceDiff) GoString() string

func (*InstanceDiff) Lock 

func (d *InstanceDiff) Lock()

func (*InstanceDiff) RequiresNew 

func (d *InstanceDiff) RequiresNew() bool

RequiresNew returns true if the diff requires the creation of a new resource (implying the destruction of the old).

func (*InstanceDiff) Same 

func (d *InstanceDiff) Same(d2 *InstanceDiff) (bool, string)

Same checks whether or not two InstanceDiff's are the "same". When we say "same", it is not necessarily exactly equal. Instead, it is just checking that the same attributes are changing, a destroy isn't suddenly happening, etc.

func (*InstanceDiff) SetAttribute 

func (d *InstanceDiff) SetAttribute(key string, attr *ResourceAttrDiff)

func (*InstanceDiff) SetDestroy 

func (d *InstanceDiff) SetDestroy(b bool)

func (*InstanceDiff) SetDestroyDeposed 

func (d *InstanceDiff) SetDestroyDeposed(b bool)

func (*InstanceDiff) SetTainted 

func (d *InstanceDiff) SetTainted(b bool)

These methods are properly locked, for use outside other InstanceDiff methods but everywhere else within the terraform package. TODO refactor the locking scheme

func (*InstanceDiff) Unlock 

func (d *InstanceDiff) Unlock()

type InstanceInfo 

type InstanceInfo struct {
	// Id is a unique name to represent this instance. This is not related
	// to InstanceState.ID in any way.
	Id string

	// ModulePath is the complete path of the module containing this
	// instance.
	ModulePath []string

	// Type is the resource type of this instance
	Type string
}

InstanceInfo is used to hold information about the instance and/or resource being modified.

func NewInstanceInfo 

func NewInstanceInfo(addr addrs.AbsResourceInstance) *InstanceInfo

NewInstanceInfo constructs an InstanceInfo from an addrs.AbsResourceInstance.

InstanceInfo is a legacy type, and uses of it should be gradually replaced by direct use of addrs.AbsResource or addrs.AbsResourceInstance as appropriate.

The legacy InstanceInfo type cannot represent module instances with instance keys, so this function will panic if given such a path. Uses of this type should all be removed or replaced before implementing "count" and "for_each" arguments on modules in order to avoid such panics.

This legacy type also cannot represent resource instances with string instance keys. It will panic if the given key is not either NoKey or an IntKey.

func (*InstanceInfo) ResourceAddress 

func (i *InstanceInfo) ResourceAddress() *ResourceAddress

ResourceAddress returns the address of the resource that the receiver is describing.

type InstanceKeyEvalData 

type InstanceKeyEvalData struct {
	// CountIndex is the value for count.index, or cty.NilVal if evaluating
	// in a context where the "count" argument is not active.
	//
	// For correct operation, this should always be of type cty.Number if not
	// nil.
	CountIndex cty.Value

	// EachKey and EachValue are the values for each.key and each.value
	// respectively, or cty.NilVal if evaluating in a context where the
	// "for_each" argument is not active. These must either both be set
	// or neither set.
	//
	// For correct operation, EachKey must always be either of type cty.String
	// or cty.Number if not nil.
	EachKey, EachValue cty.Value
}

InstanceKeyEvalData is used during evaluation to specify which values, if any, should be produced for count.index, each.key, and each.value.

func EvalDataForInstanceKey 

func EvalDataForInstanceKey(key addrs.InstanceKey, forEachMap map[string]cty.Value) InstanceKeyEvalData

EvalDataForInstanceKey constructs a suitable InstanceKeyEvalData for evaluating in a context that has the given instance key.

type InstanceState 

type InstanceState struct {
	// A unique ID for this resource. This is opaque to Terraform
	// and is only meant as a lookup mechanism for the providers.
	ID string `json:"id"`

	// Attributes are basic information about the resource. Any keys here
	// are accessible in variable format within Terraform configurations:
	// ${resourcetype.name.attribute}.
	Attributes map[string]string `json:"attributes"`

	// Ephemeral is used to store any state associated with this instance
	// that is necessary for the Terraform run to complete, but is not
	// persisted to a state file.
	Ephemeral EphemeralState `json:"-"`

	// Meta is a simple K/V map that is persisted to the State but otherwise
	// ignored by Terraform core. It's meant to be used for accounting by
	// external client code. The value here must only contain Go primitives
	// and collections.
	Meta map[string]interface{} `json:"meta"`

	// Tainted is used to mark a resource for recreation.
	Tainted bool `json:"tainted"`
	// contains filtered or unexported fields
}

InstanceState is used to track the unique state information belonging to a given instance.

func NewInstanceStateShimmedFromValue 

func NewInstanceStateShimmedFromValue(state cty.Value, schemaVersion int) *InstanceState

NewInstanceStateShimmedFromValue is a shim method to lower a new-style object value representing the attributes of an instance object into the legacy InstanceState representation.

This is for shimming to old components only and should not be used in new code.

func (*InstanceState) AttrsAsObjectValue 

func (s *InstanceState) AttrsAsObjectValue(ty cty.Type) (cty.Value, error)

AttrsAsObjectValue shims from the legacy InstanceState representation to a new-style cty object value representation of the state attributes, using the given type for guidance.

The given type must be the implied type of the schema of the resource type of the object whose state is being converted, or the result is undefined.

This is for shimming from old components only and should not be used in new code.

func (*InstanceState) DeepCopy 

func (s *InstanceState) DeepCopy() *InstanceState

func (*InstanceState) Empty 

func (s *InstanceState) Empty() bool

func (*InstanceState) Equal 

func (s *InstanceState) Equal(other *InstanceState) bool

func (*InstanceState) Lock 

func (s *InstanceState) Lock()

func (*InstanceState) MergeDiff 

func (s *InstanceState) MergeDiff(d *InstanceDiff) *InstanceState

MergeDiff takes a ResourceDiff and merges the attributes into this resource state in order to generate a new state. This new state can be used to provide updated attribute lookups for variable interpolation.

If the diff attribute requires computing the value, and hence won't be available until apply, the value is replaced with the computeID.

func (*InstanceState) Set 

func (s *InstanceState) Set(from *InstanceState)

Copy all the Fields from another InstanceState

func (*InstanceState) String 

func (s *InstanceState) String() string

func (*InstanceState) Unlock 

func (s *InstanceState) Unlock()

type InstanceType 

type InstanceType int

InstanceType is an enum of the various types of instances store in the State 

const (
	TypeInvalid InstanceType = iota
	TypePrimary
	TypeTainted
	TypeDeposed
)

func ParseInstanceType 

func ParseInstanceType(s string) (InstanceType, error)

func (InstanceType) String 

func (i InstanceType) String() string

type LocalTransformer 

type LocalTransformer struct {
	Config *configs.Config
}

LocalTransformer is a GraphTransformer that adds all the local values from the configuration to the graph.

func (*LocalTransformer) Transform 

func (t *LocalTransformer) Transform(g *Graph) error

type MissingProviderTransformer 

type MissingProviderTransformer struct {
	// Providers is the list of providers we support.
	Providers []string

	// Concrete, if set, overrides how the providers are made.
	Concrete ConcreteProviderNodeFunc
}

MissingProviderTransformer is a GraphTransformer that adds to the graph a node for each default provider configuration that is referenced by another node but not already present in the graph.

These "default" nodes are always added to the root module, regardless of where they are requested. This is important because our inheritance resolution behavior in ProviderTransformer will then treat these as a last-ditch fallback after walking up the tree, rather than preferring them as it would if they were placed in the same module as the requester.

This transformer may create extra nodes that are not needed in practice, due to overriding provider configurations in child modules. PruneProviderTransformer can then remove these once ProviderTransformer has resolved all of the inheritence, etc.

func (*MissingProviderTransformer) Transform 

func (t *MissingProviderTransformer) Transform(g *Graph) error

type MissingProvisionerTransformer 

type MissingProvisionerTransformer struct {
	// Provisioners is the list of provisioners we support.
	Provisioners []string
}

MissingProvisionerTransformer is a GraphTransformer that adds nodes for missing provisioners into the graph.

func (*MissingProvisionerTransformer) Transform 

func (t *MissingProvisionerTransformer) Transform(g *Graph) error

type MockEvalContext 

type MockEvalContext struct {
	StoppedCalled bool
	StoppedValue  <-chan struct{}

	HookCalled bool
	HookHook   Hook
	HookError  error

	InputCalled bool
	InputInput  UIInput

	InitProviderCalled   bool
	InitProviderType     string
	InitProviderAddr     addrs.ProviderConfig
	InitProviderProvider providers.Interface
	InitProviderError    error

	ProviderCalled   bool
	ProviderAddr     addrs.AbsProviderConfig
	ProviderProvider providers.Interface

	ProviderSchemaCalled bool
	ProviderSchemaAddr   addrs.AbsProviderConfig
	ProviderSchemaSchema *ProviderSchema

	CloseProviderCalled   bool
	CloseProviderAddr     addrs.ProviderConfig
	CloseProviderProvider providers.Interface

	ProviderInputCalled bool
	ProviderInputAddr   addrs.ProviderConfig
	ProviderInputValues map[string]cty.Value

	SetProviderInputCalled bool
	SetProviderInputAddr   addrs.ProviderConfig
	SetProviderInputValues map[string]cty.Value

	ConfigureProviderCalled bool
	ConfigureProviderAddr   addrs.ProviderConfig
	ConfigureProviderConfig cty.Value
	ConfigureProviderDiags  tfdiags.Diagnostics

	InitProvisionerCalled      bool
	InitProvisionerName        string
	InitProvisionerProvisioner provisioners.Interface
	InitProvisionerError       error

	ProvisionerCalled      bool
	ProvisionerName        string
	ProvisionerProvisioner provisioners.Interface

	ProvisionerSchemaCalled bool
	ProvisionerSchemaName   string
	ProvisionerSchemaSchema *configschema.Block

	CloseProvisionerCalled      bool
	CloseProvisionerName        string
	CloseProvisionerProvisioner provisioners.Interface

	EvaluateBlockCalled     bool
	EvaluateBlockBody       hcl.Body
	EvaluateBlockSchema     *configschema.Block
	EvaluateBlockSelf       addrs.Referenceable
	EvaluateBlockKeyData    InstanceKeyEvalData
	EvaluateBlockResultFunc func(
		body hcl.Body,
		schema *configschema.Block,
		self addrs.Referenceable,
		keyData InstanceKeyEvalData,
	) (cty.Value, hcl.Body, tfdiags.Diagnostics) // overrides the other values below, if set
	EvaluateBlockResult       cty.Value
	EvaluateBlockExpandedBody hcl.Body
	EvaluateBlockDiags        tfdiags.Diagnostics

	EvaluateExprCalled     bool
	EvaluateExprExpr       hcl.Expression
	EvaluateExprWantType   cty.Type
	EvaluateExprSelf       addrs.Referenceable
	EvaluateExprResultFunc func(
		expr hcl.Expression,
		wantType cty.Type,
		self addrs.Referenceable,
	) (cty.Value, tfdiags.Diagnostics) // overrides the other values below, if set
	EvaluateExprResult cty.Value
	EvaluateExprDiags  tfdiags.Diagnostics

	EvaluationScopeCalled  bool
	EvaluationScopeSelf    addrs.Referenceable
	EvaluationScopeKeyData InstanceKeyEvalData
	EvaluationScopeScope   *lang.Scope

	PathCalled bool
	PathPath   addrs.ModuleInstance

	SetModuleCallArgumentsCalled bool
	SetModuleCallArgumentsModule addrs.ModuleCallInstance
	SetModuleCallArgumentsValues map[string]cty.Value

	ChangesCalled  bool
	ChangesChanges *plans.ChangesSync

	StateCalled bool
	StateState  *states.SyncState
}

MockEvalContext is a mock version of EvalContext that can be used for tests.

func (*MockEvalContext) Changes 

func (c *MockEvalContext) Changes() *plans.ChangesSync

func (*MockEvalContext) CloseProvider 

func (c *MockEvalContext) CloseProvider(addr addrs.ProviderConfig) error

func (*MockEvalContext) CloseProvisioner 

func (c *MockEvalContext) CloseProvisioner(n string) error

func (*MockEvalContext) ConfigureProvider 

func (c *MockEvalContext) ConfigureProvider(addr addrs.ProviderConfig, cfg cty.Value) tfdiags.Diagnostics

func (*MockEvalContext) EvaluateBlock 

func (c *MockEvalContext) EvaluateBlock(body hcl.Body, schema *configschema.Block, self addrs.Referenceable, keyData InstanceKeyEvalData) (cty.Value, hcl.Body, tfdiags.Diagnostics)

func (*MockEvalContext) EvaluateExpr 

func (c *MockEvalContext) EvaluateExpr(expr hcl.Expression, wantType cty.Type, self addrs.Referenceable) (cty.Value, tfdiags.Diagnostics)

func (*MockEvalContext) EvaluationScope 

func (c *MockEvalContext) EvaluationScope(self addrs.Referenceable, keyData InstanceKeyEvalData) *lang.Scope

func (*MockEvalContext) Hook 

func (c *MockEvalContext) Hook(fn func(Hook) (HookAction, error)) error

func (*MockEvalContext) InitProvider 

func (c *MockEvalContext) InitProvider(t string, addr addrs.ProviderConfig) (providers.Interface, error)

func (*MockEvalContext) InitProvisioner 

func (c *MockEvalContext) InitProvisioner(n string) (provisioners.Interface, error)

func (*MockEvalContext) Input 

func (c *MockEvalContext) Input() UIInput

func (*MockEvalContext) Path 

func (c *MockEvalContext) Path() addrs.ModuleInstance

func (*MockEvalContext) Provider 

func (c *MockEvalContext) Provider(addr addrs.AbsProviderConfig) providers.Interface

func (*MockEvalContext) ProviderInput 

func (c *MockEvalContext) ProviderInput(addr addrs.ProviderConfig) map[string]cty.Value

func (*MockEvalContext) ProviderSchema 

func (c *MockEvalContext) ProviderSchema(addr addrs.AbsProviderConfig) *ProviderSchema

func (*MockEvalContext) Provisioner 

func (c *MockEvalContext) Provisioner(n string) provisioners.Interface

func (*MockEvalContext) ProvisionerSchema 

func (c *MockEvalContext) ProvisionerSchema(n string) *configschema.Block

func (*MockEvalContext) SetModuleCallArguments 

func (c *MockEvalContext) SetModuleCallArguments(n addrs.ModuleCallInstance, values map[string]cty.Value)

func (*MockEvalContext) SetProviderInput 

func (c *MockEvalContext) SetProviderInput(addr addrs.ProviderConfig, vals map[string]cty.Value)

func (*MockEvalContext) State 

func (c *MockEvalContext) State() *states.SyncState

func (*MockEvalContext) Stopped 

func (c *MockEvalContext) Stopped() <-chan struct{}

type MockHook 

type MockHook struct {
	sync.Mutex

	PreApplyCalled       bool
	PreApplyAddr         addrs.AbsResourceInstance
	PreApplyGen          states.Generation
	PreApplyAction       plans.Action
	PreApplyPriorState   cty.Value
	PreApplyPlannedState cty.Value
	PreApplyReturn       HookAction
	PreApplyError        error

	PostApplyCalled      bool
	PostApplyAddr        addrs.AbsResourceInstance
	PostApplyGen         states.Generation
	PostApplyNewState    cty.Value
	PostApplyError       error
	PostApplyReturn      HookAction
	PostApplyReturnError error
	PostApplyFn          func(addrs.AbsResourceInstance, states.Generation, cty.Value, error) (HookAction, error)

	PreDiffCalled        bool
	PreDiffAddr          addrs.AbsResourceInstance
	PreDiffGen           states.Generation
	PreDiffPriorState    cty.Value
	PreDiffProposedState cty.Value
	PreDiffReturn        HookAction
	PreDiffError         error

	PostDiffCalled       bool
	PostDiffAddr         addrs.AbsResourceInstance
	PostDiffGen          states.Generation
	PostDiffAction       plans.Action
	PostDiffPriorState   cty.Value
	PostDiffPlannedState cty.Value
	PostDiffReturn       HookAction
	PostDiffError        error

	PreProvisionInstanceCalled bool
	PreProvisionInstanceAddr   addrs.AbsResourceInstance
	PreProvisionInstanceState  cty.Value
	PreProvisionInstanceReturn HookAction
	PreProvisionInstanceError  error

	PostProvisionInstanceCalled bool
	PostProvisionInstanceAddr   addrs.AbsResourceInstance
	PostProvisionInstanceState  cty.Value
	PostProvisionInstanceReturn HookAction
	PostProvisionInstanceError  error

	PreProvisionInstanceStepCalled          bool
	PreProvisionInstanceStepAddr            addrs.AbsResourceInstance
	PreProvisionInstanceStepProvisionerType string
	PreProvisionInstanceStepReturn          HookAction
	PreProvisionInstanceStepError           error

	PostProvisionInstanceStepCalled          bool
	PostProvisionInstanceStepAddr            addrs.AbsResourceInstance
	PostProvisionInstanceStepProvisionerType string
	PostProvisionInstanceStepErrorArg        error
	PostProvisionInstanceStepReturn          HookAction
	PostProvisionInstanceStepError           error

	ProvisionOutputCalled          bool
	ProvisionOutputAddr            addrs.AbsResourceInstance
	ProvisionOutputProvisionerType string
	ProvisionOutputMessage         string

	PreRefreshCalled     bool
	PreRefreshAddr       addrs.AbsResourceInstance
	PreRefreshGen        states.Generation
	PreRefreshPriorState cty.Value
	PreRefreshReturn     HookAction
	PreRefreshError      error

	PostRefreshCalled     bool
	PostRefreshAddr       addrs.AbsResourceInstance
	PostRefreshGen        states.Generation
	PostRefreshPriorState cty.Value
	PostRefreshNewState   cty.Value
	PostRefreshReturn     HookAction
	PostRefreshError      error

	PreImportStateCalled bool
	PreImportStateAddr   addrs.AbsResourceInstance
	PreImportStateID     string
	PreImportStateReturn HookAction
	PreImportStateError  error

	PostImportStateCalled    bool
	PostImportStateAddr      addrs.AbsResourceInstance
	PostImportStateNewStates []providers.ImportedResource
	PostImportStateReturn    HookAction
	PostImportStateError     error

	PostStateUpdateCalled bool
	PostStateUpdateState  *states.State
	PostStateUpdateReturn HookAction
	PostStateUpdateError  error
}

MockHook is an implementation of Hook that can be used for tests. It records all of its function calls.

func (*MockHook) PostApply 

func (h *MockHook) PostApply(addr addrs.AbsResourceInstance, gen states.Generation, newState cty.Value, err error) (HookAction, error)

func (*MockHook) PostDiff 

func (h *MockHook) PostDiff(addr addrs.AbsResourceInstance, gen states.Generation, action plans.Action, priorState, plannedNewState cty.Value) (HookAction, error)

func (*MockHook) PostImportState 

func (h *MockHook) PostImportState(addr addrs.AbsResourceInstance, imported []providers.ImportedResource) (HookAction, error)

func (*MockHook) PostProvisionInstance 

func (h *MockHook) PostProvisionInstance(addr addrs.AbsResourceInstance, state cty.Value) (HookAction, error)

func (*MockHook) PostProvisionInstanceStep 

func (h *MockHook) PostProvisionInstanceStep(addr addrs.AbsResourceInstance, typeName string, err error) (HookAction, error)

func (*MockHook) PostRefresh 

func (h *MockHook) PostRefresh(addr addrs.AbsResourceInstance, gen states.Generation, priorState cty.Value, newState cty.Value) (HookAction, error)

func (*MockHook) PostStateUpdate 

func (h *MockHook) PostStateUpdate(new *states.State) (HookAction, error)

func (*MockHook) PreApply 

func (h *MockHook) PreApply(addr addrs.AbsResourceInstance, gen states.Generation, action plans.Action, priorState, plannedNewState cty.Value) (HookAction, error)

func (*MockHook) PreDiff 

func (h *MockHook) PreDiff(addr addrs.AbsResourceInstance, gen states.Generation, priorState, proposedNewState cty.Value) (HookAction, error)

func (*MockHook) PreImportState 

func (h *MockHook) PreImportState(addr addrs.AbsResourceInstance, importID string) (HookAction, error)

func (*MockHook) PreProvisionInstance 

func (h *MockHook) PreProvisionInstance(addr addrs.AbsResourceInstance, state cty.Value) (HookAction, error)

func (*MockHook) PreProvisionInstanceStep 

func (h *MockHook) PreProvisionInstanceStep(addr addrs.AbsResourceInstance, typeName string) (HookAction, error)

func (*MockHook) PreRefresh 

func (h *MockHook) PreRefresh(addr addrs.AbsResourceInstance, gen states.Generation, priorState cty.Value) (HookAction, error)

func (*MockHook) ProvisionOutput 

func (h *MockHook) ProvisionOutput(addr addrs.AbsResourceInstance, typeName string, line string)

type MockProvider 

type MockProvider struct {
	sync.Mutex

	// Anything you want, in case you need to store extra data with the mock.
	Meta interface{}

	GetSchemaCalled bool
	GetSchemaReturn *ProviderSchema // This is using ProviderSchema directly rather than providers.GetSchemaResponse for compatibility with old tests

	PrepareProviderConfigCalled   bool
	PrepareProviderConfigResponse providers.PrepareProviderConfigResponse
	PrepareProviderConfigRequest  providers.PrepareProviderConfigRequest
	PrepareProviderConfigFn       func(providers.PrepareProviderConfigRequest) providers.PrepareProviderConfigResponse

	ValidateResourceTypeConfigCalled   bool
	ValidateResourceTypeConfigTypeName string
	ValidateResourceTypeConfigResponse providers.ValidateResourceTypeConfigResponse
	ValidateResourceTypeConfigRequest  providers.ValidateResourceTypeConfigRequest
	ValidateResourceTypeConfigFn       func(providers.ValidateResourceTypeConfigRequest) providers.ValidateResourceTypeConfigResponse

	ValidateDataSourceConfigCalled   bool
	ValidateDataSourceConfigTypeName string
	ValidateDataSourceConfigResponse providers.ValidateDataSourceConfigResponse
	ValidateDataSourceConfigRequest  providers.ValidateDataSourceConfigRequest
	ValidateDataSourceConfigFn       func(providers.ValidateDataSourceConfigRequest) providers.ValidateDataSourceConfigResponse

	UpgradeResourceStateCalled   bool
	UpgradeResourceStateTypeName string
	UpgradeResourceStateResponse providers.UpgradeResourceStateResponse
	UpgradeResourceStateRequest  providers.UpgradeResourceStateRequest
	UpgradeResourceStateFn       func(providers.UpgradeResourceStateRequest) providers.UpgradeResourceStateResponse

	ConfigureCalled   bool
	ConfigureResponse providers.ConfigureResponse
	ConfigureRequest  providers.ConfigureRequest
	ConfigureNewFn    func(providers.ConfigureRequest) providers.ConfigureResponse // Named ConfigureNewFn so we can still have the legacy ConfigureFn declared below

	StopCalled   bool
	StopFn       func() error
	StopResponse error

	ReadResourceCalled   bool
	ReadResourceResponse providers.ReadResourceResponse
	ReadResourceRequest  providers.ReadResourceRequest
	ReadResourceFn       func(providers.ReadResourceRequest) providers.ReadResourceResponse

	PlanResourceChangeCalled   bool
	PlanResourceChangeResponse providers.PlanResourceChangeResponse
	PlanResourceChangeRequest  providers.PlanResourceChangeRequest
	PlanResourceChangeFn       func(providers.PlanResourceChangeRequest) providers.PlanResourceChangeResponse

	ApplyResourceChangeCalled   bool
	ApplyResourceChangeResponse providers.ApplyResourceChangeResponse
	ApplyResourceChangeRequest  providers.ApplyResourceChangeRequest
	ApplyResourceChangeFn       func(providers.ApplyResourceChangeRequest) providers.ApplyResourceChangeResponse

	ImportResourceStateCalled   bool
	ImportResourceStateResponse providers.ImportResourceStateResponse
	ImportResourceStateRequest  providers.ImportResourceStateRequest
	ImportResourceStateFn       func(providers.ImportResourceStateRequest) providers.ImportResourceStateResponse
	// Legacy return type for existing tests, which will be shimmed into an
	// ImportResourceStateResponse if set
	ImportStateReturn []*InstanceState

	ReadDataSourceCalled   bool
	ReadDataSourceResponse providers.ReadDataSourceResponse
	ReadDataSourceRequest  providers.ReadDataSourceRequest
	ReadDataSourceFn       func(providers.ReadDataSourceRequest) providers.ReadDataSourceResponse

	CloseCalled bool
	CloseError  error

	// Legacy callbacks: if these are set, we will shim incoming calls for
	// new-style methods to these old-fashioned terraform.ResourceProvider
	// mock callbacks, for the benefit of older tests that were written against
	// the old mock API.
	ValidateFn  func(c *ResourceConfig) (ws []string, es []error)
	ConfigureFn func(c *ResourceConfig) error
	DiffFn      func(info *InstanceInfo, s *InstanceState, c *ResourceConfig) (*InstanceDiff, error)
	ApplyFn     func(info *InstanceInfo, s *InstanceState, d *InstanceDiff) (*InstanceState, error)
}

MockProvider implements providers.Interface but mocks out all the calls for testing purposes.

func (*MockProvider) ApplyResourceChange 

func (p *MockProvider) ApplyResourceChange(r providers.ApplyResourceChangeRequest) providers.ApplyResourceChangeResponse

func (*MockProvider) Close 

func (p *MockProvider) Close() error

func (*MockProvider) Configure 

func (p *MockProvider) Configure(r providers.ConfigureRequest) providers.ConfigureResponse

func (*MockProvider) GetSchema 

func (p *MockProvider) GetSchema() providers.GetSchemaResponse

func (*MockProvider) ImportResourceState 

func (p *MockProvider) ImportResourceState(r providers.ImportResourceStateRequest) providers.ImportResourceStateResponse

func (*MockProvider) PlanResourceChange 

func (p *MockProvider) PlanResourceChange(r providers.PlanResourceChangeRequest) providers.PlanResourceChangeResponse

func (*MockProvider) PrepareProviderConfig 

func (p *MockProvider) PrepareProviderConfig(r providers.PrepareProviderConfigRequest) providers.PrepareProviderConfigResponse

func (*MockProvider) ReadDataSource 

func (p *MockProvider) ReadDataSource(r providers.ReadDataSourceRequest) providers.ReadDataSourceResponse

func (*MockProvider) ReadResource 

func (p *MockProvider) ReadResource(r providers.ReadResourceRequest) providers.ReadResourceResponse

func (*MockProvider) Stop 

func (p *MockProvider) Stop() error

func (*MockProvider) UpgradeResourceState 

func (p *MockProvider) UpgradeResourceState(r providers.UpgradeResourceStateRequest) providers.UpgradeResourceStateResponse

func (*MockProvider) ValidateDataSourceConfig 

func (p *MockProvider) ValidateDataSourceConfig(r providers.ValidateDataSourceConfigRequest) providers.ValidateDataSourceConfigResponse

func (*MockProvider) ValidateResourceTypeConfig 

func (p *MockProvider) ValidateResourceTypeConfig(r providers.ValidateResourceTypeConfigRequest) providers.ValidateResourceTypeConfigResponse

type MockProvisioner 

type MockProvisioner struct {
	sync.Mutex
	// Anything you want, in case you need to store extra data with the mock.
	Meta interface{}

	GetSchemaCalled   bool
	GetSchemaResponse provisioners.GetSchemaResponse

	ValidateProvisionerConfigCalled   bool
	ValidateProvisionerConfigRequest  provisioners.ValidateProvisionerConfigRequest
	ValidateProvisionerConfigResponse provisioners.ValidateProvisionerConfigResponse
	ValidateProvisionerConfigFn       func(provisioners.ValidateProvisionerConfigRequest) provisioners.ValidateProvisionerConfigResponse

	ProvisionResourceCalled   bool
	ProvisionResourceRequest  provisioners.ProvisionResourceRequest
	ProvisionResourceResponse provisioners.ProvisionResourceResponse
	ProvisionResourceFn       func(provisioners.ProvisionResourceRequest) provisioners.ProvisionResourceResponse

	StopCalled   bool
	StopResponse error
	StopFn       func() error

	CloseCalled   bool
	CloseResponse error
	CloseFn       func() error

	// Legacy callbacks: if these are set, we will shim incoming calls for
	// new-style methods to these old-fashioned terraform.ResourceProvider
	// mock callbacks, for the benefit of older tests that were written against
	// the old mock API.
	ApplyFn func(rs *InstanceState, c *ResourceConfig) error
}

MockProvisioner implements provisioners.Interface but mocks out all the calls for testing purposes.

func (*MockProvisioner) Close 

func (p *MockProvisioner) Close() error

func (*MockProvisioner) GetSchema 

func (p *MockProvisioner) GetSchema() provisioners.GetSchemaResponse

func (*MockProvisioner) ProvisionResource 

func (p *MockProvisioner) ProvisionResource(r provisioners.ProvisionResourceRequest) provisioners.ProvisionResourceResponse

func (*MockProvisioner) Stop 

func (p *MockProvisioner) Stop() error

func (*MockProvisioner) ValidateProvisionerConfig 

func (p *MockProvisioner) ValidateProvisionerConfig(r provisioners.ValidateProvisionerConfigRequest) provisioners.ValidateProvisionerConfigResponse

type MockResourceProvider 

type MockResourceProvider struct {
	sync.Mutex

	// Anything you want, in case you need to store extra data with the mock.
	Meta interface{}

	CloseCalled                    bool
	CloseError                     error
	GetSchemaCalled                bool
	GetSchemaRequest               *ProviderSchemaRequest
	GetSchemaReturn                *ProviderSchema
	GetSchemaReturnError           error
	InputCalled                    bool
	InputInput                     UIInput
	InputConfig                    *ResourceConfig
	InputReturnConfig              *ResourceConfig
	InputReturnError               error
	InputFn                        func(UIInput, *ResourceConfig) (*ResourceConfig, error)
	ApplyCalled                    bool
	ApplyInfo                      *InstanceInfo
	ApplyState                     *InstanceState
	ApplyDiff                      *InstanceDiff
	ApplyFn                        func(*InstanceInfo, *InstanceState, *InstanceDiff) (*InstanceState, error)
	ApplyReturn                    *InstanceState
	ApplyReturnError               error
	ConfigureCalled                bool
	ConfigureConfig                *ResourceConfig
	ConfigureFn                    func(*ResourceConfig) error
	ConfigureReturnError           error
	DiffCalled                     bool
	DiffInfo                       *InstanceInfo
	DiffState                      *InstanceState
	DiffDesired                    *ResourceConfig
	DiffFn                         func(*InstanceInfo, *InstanceState, *ResourceConfig) (*InstanceDiff, error)
	DiffReturn                     *InstanceDiff
	DiffReturnError                error
	RefreshCalled                  bool
	RefreshInfo                    *InstanceInfo
	RefreshState                   *InstanceState
	RefreshFn                      func(*InstanceInfo, *InstanceState) (*InstanceState, error)
	RefreshReturn                  *InstanceState
	RefreshReturnError             error
	ResourcesCalled                bool
	ResourcesReturn                []ResourceType
	ReadDataApplyCalled            bool
	ReadDataApplyInfo              *InstanceInfo
	ReadDataApplyDiff              *InstanceDiff
	ReadDataApplyFn                func(*InstanceInfo, *InstanceDiff) (*InstanceState, error)
	ReadDataApplyReturn            *InstanceState
	ReadDataApplyReturnError       error
	ReadDataDiffCalled             bool
	ReadDataDiffInfo               *InstanceInfo
	ReadDataDiffDesired            *ResourceConfig
	ReadDataDiffFn                 func(*InstanceInfo, *ResourceConfig) (*InstanceDiff, error)
	ReadDataDiffReturn             *InstanceDiff
	ReadDataDiffReturnError        error
	StopCalled                     bool
	StopFn                         func() error
	StopReturnError                error
	DataSourcesCalled              bool
	DataSourcesReturn              []DataSource
	ValidateCalled                 bool
	ValidateConfig                 *ResourceConfig
	ValidateFn                     func(*ResourceConfig) ([]string, []error)
	ValidateReturnWarns            []string
	ValidateReturnErrors           []error
	ValidateResourceFn             func(string, *ResourceConfig) ([]string, []error)
	ValidateResourceCalled         bool
	ValidateResourceType           string
	ValidateResourceConfig         *ResourceConfig
	ValidateResourceReturnWarns    []string
	ValidateResourceReturnErrors   []error
	ValidateDataSourceFn           func(string, *ResourceConfig) ([]string, []error)
	ValidateDataSourceCalled       bool
	ValidateDataSourceType         string
	ValidateDataSourceConfig       *ResourceConfig
	ValidateDataSourceReturnWarns  []string
	ValidateDataSourceReturnErrors []error

	ImportStateCalled      bool
	ImportStateInfo        *InstanceInfo
	ImportStateID          string
	ImportStateReturn      []*InstanceState
	ImportStateReturnError error
	ImportStateFn          func(*InstanceInfo, string) ([]*InstanceState, error)
}

MockResourceProvider implements ResourceProvider but mocks out all the calls for testing purposes.

func (*MockResourceProvider) Apply 

func (p *MockResourceProvider) Apply(
	info *InstanceInfo,
	state *InstanceState,
	diff *InstanceDiff) (*InstanceState, error)

func (*MockResourceProvider) Close 

func (p *MockResourceProvider) Close() error

func (*MockResourceProvider) Configure 

func (p *MockResourceProvider) Configure(c *ResourceConfig) error

func (*MockResourceProvider) DataSources 

func (p *MockResourceProvider) DataSources() []DataSource

func (*MockResourceProvider) Diff 

func (p *MockResourceProvider) Diff(
	info *InstanceInfo,
	state *InstanceState,
	desired *ResourceConfig) (*InstanceDiff, error)

func (*MockResourceProvider) GetSchema 

func (p *MockResourceProvider) GetSchema(req *ProviderSchemaRequest) (*ProviderSchema, error)

func (*MockResourceProvider) ImportState 

func (p *MockResourceProvider) ImportState(info *InstanceInfo, id string) ([]*InstanceState, error)

func (*MockResourceProvider) Input 

func (p *MockResourceProvider) Input(
	input UIInput, c *ResourceConfig) (*ResourceConfig, error)

func (*MockResourceProvider) ReadDataApply 

func (p *MockResourceProvider) ReadDataApply(
	info *InstanceInfo,
	d *InstanceDiff) (*InstanceState, error)

func (*MockResourceProvider) ReadDataDiff 

func (p *MockResourceProvider) ReadDataDiff(
	info *InstanceInfo,
	desired *ResourceConfig) (*InstanceDiff, error)

func (*MockResourceProvider) Refresh 

func (p *MockResourceProvider) Refresh(
	info *InstanceInfo,
	s *InstanceState) (*InstanceState, error)

func (*MockResourceProvider) Resources 

func (p *MockResourceProvider) Resources() []ResourceType

func (*MockResourceProvider) Stop 

func (p *MockResourceProvider) Stop() error

func (*MockResourceProvider) Validate 

func (p *MockResourceProvider) Validate(c *ResourceConfig) ([]string, []error)

func (*MockResourceProvider) ValidateDataSource 

func (p *MockResourceProvider) ValidateDataSource(t string, c *ResourceConfig) ([]string, []error)

func (*MockResourceProvider) ValidateResource 

func (p *MockResourceProvider) ValidateResource(t string, c *ResourceConfig) ([]string, []error)

type MockResourceProvisioner 

type MockResourceProvisioner struct {
	sync.Mutex
	// Anything you want, in case you need to store extra data with the mock.
	Meta interface{}

	GetConfigSchemaCalled       bool
	GetConfigSchemaReturnSchema *configschema.Block
	GetConfigSchemaReturnError  error

	ApplyCalled      bool
	ApplyOutput      UIOutput
	ApplyState       *InstanceState
	ApplyConfig      *ResourceConfig
	ApplyFn          func(*InstanceState, *ResourceConfig) error
	ApplyReturnError error

	ValidateCalled       bool
	ValidateConfig       *ResourceConfig
	ValidateFn           func(c *ResourceConfig) ([]string, []error)
	ValidateReturnWarns  []string
	ValidateReturnErrors []error

	StopCalled      bool
	StopFn          func() error
	StopReturnError error
}

MockResourceProvisioner implements ResourceProvisioner but mocks out all the calls for testing purposes.

func (*MockResourceProvisioner) Apply 

func (p *MockResourceProvisioner) Apply(
	output UIOutput,
	state *InstanceState,
	c *ResourceConfig) error

func (*MockResourceProvisioner) GetConfigSchema 

func (p *MockResourceProvisioner) GetConfigSchema() (*configschema.Block, error)

func (*MockResourceProvisioner) Stop 

func (p *MockResourceProvisioner) Stop() error

func (*MockResourceProvisioner) Validate 

func (p *MockResourceProvisioner) Validate(c *ResourceConfig) ([]string, []error)

type MockUIInput 

type MockUIInput struct {
	InputCalled       bool
	InputOpts         *InputOpts
	InputReturnMap    map[string]string
	InputReturnString string
	InputReturnError  error
	InputFn           func(*InputOpts) (string, error)
}

MockUIInput is an implementation of UIInput that can be used for tests.

func (*MockUIInput) Input 

func (i *MockUIInput) Input(ctx context.Context, opts *InputOpts) (string, error)

type MockUIOutput 

type MockUIOutput struct {
	sync.Mutex
	OutputCalled  bool
	OutputMessage string
	OutputFn      func(string)
}

MockUIOutput is an implementation of UIOutput that can be used for tests.

func (*MockUIOutput) Output 

func (o *MockUIOutput) Output(v string)

type ModuleDiff 

type ModuleDiff struct {
	Path      []string
	Resources map[string]*InstanceDiff
	Destroy   bool // Set only by the destroy plan
}

ModuleDiff tracks the differences between resources to apply within a single module.

func (*ModuleDiff) ChangeType 

func (d *ModuleDiff) ChangeType() DiffChangeType

ChangeType returns the type of changes that the diff for this module includes.

At a module level, this will only be DiffNone, DiffUpdate, DiffDestroy, or DiffCreate. If an instance within the module has a DiffDestroyCreate then this will register as a DiffCreate for a module.

func (*ModuleDiff) Empty 

func (d *ModuleDiff) Empty() bool

Empty returns true if the diff has no changes within this module.

func (*ModuleDiff) Instances 

func (d *ModuleDiff) Instances(id string) []*InstanceDiff

Instances returns the instance diffs for the id given. This can return multiple instance diffs if there are counts within the resource.

func (*ModuleDiff) IsRoot 

func (d *ModuleDiff) IsRoot() bool

IsRoot says whether or not this module diff is for the root module.

func (*ModuleDiff) String 

func (d *ModuleDiff) String() string

String outputs the diff in a long but command-line friendly output format that users can read to quickly inspect a diff.

type ModuleState 

type ModuleState struct {
	// Path is the import path from the root module. Modules imports are
	// always disjoint, so the path represents amodule tree
	Path []string `json:"path"`

	// Locals are kept only transiently in-memory, because we can always
	// re-compute them.
	Locals map[string]interface{} `json:"-"`

	// Outputs declared by the module and maintained for each module
	// even though only the root module technically needs to be kept.
	// This allows operators to inspect values at the boundaries.
	Outputs map[string]*OutputState `json:"outputs"`

	// Resources is a mapping of the logically named resource to
	// the state of the resource. Each resource may actually have
	// N instances underneath, although a user only needs to think
	// about the 1:1 case.
	Resources map[string]*ResourceState `json:"resources"`

	// Dependencies are a list of things that this module relies on
	// existing to remain intact. For example: an module may depend
	// on a VPC ID given by an aws_vpc resource.
	//
	// Terraform uses this information to build valid destruction
	// orders and to warn the user if they're destroying a module that
	// another resource depends on.
	//
	// Things can be put into this list that may not be managed by
	// Terraform. If Terraform doesn't find a matching ID in the
	// overall state, then it assumes it isn't managed and doesn't
	// worry about it.
	Dependencies []string `json:"depends_on"`
	// contains filtered or unexported fields
}

ModuleState is used to track all the state relevant to a single module. Previous to Terraform 0.3, all state belonged to the "root" module.

func (*ModuleState) Empty 

func (m *ModuleState) Empty() bool

func (*ModuleState) Equal 

func (m *ModuleState) Equal(other *ModuleState) bool

Equal tests whether one module state is equal to another.

func (*ModuleState) IsDescendent 

func (m *ModuleState) IsDescendent(other *ModuleState) bool

IsDescendent returns true if other is a descendent of this module.

func (*ModuleState) IsRoot 

func (m *ModuleState) IsRoot() bool

IsRoot says whether or not this module diff is for the root module.

func (*ModuleState) Lock 

func (s *ModuleState) Lock()

func (*ModuleState) Orphans 

func (m *ModuleState) Orphans(c *configs.Module) []addrs.ResourceInstance

Orphans returns a list of keys of resources that are in the State but aren't present in the configuration itself. Hence, these keys represent the state of resources that are orphans.

func (*ModuleState) RemovedOutputs 

func (s *ModuleState) RemovedOutputs(outputs map[string]*configs.Output) []addrs.OutputValue

RemovedOutputs returns a list of outputs that are in the State but aren't present in the configuration itself.

func (*ModuleState) String 

func (m *ModuleState) String() string

func (*ModuleState) Unlock 

func (s *ModuleState) Unlock()

func (*ModuleState) View 

func (m *ModuleState) View(id string) *ModuleState

View returns a view with the given resource prefix.

type ModuleVariableTransformer 

type ModuleVariableTransformer struct {
	Config *configs.Config
}

ModuleVariableTransformer is a GraphTransformer that adds all the variables in the configuration to the graph.

Any "variable" block present in any non-root module is included here, even if a particular variable is not referenced from anywhere.

The transform will produce errors if a call to a module does not conform to the expected set of arguments, but this transformer is not in a good position to return errors and so the validate walk should include specific steps for validating module blocks, separate from this transform.

func (*ModuleVariableTransformer) Transform 

func (t *ModuleVariableTransformer) Transform(g *Graph) error

type NilHook 

type NilHook struct{}

NilHook is a Hook implementation that does nothing. It exists only to simplify implementing hooks. You can embed this into your Hook implementation and only implement the functions you are interested in.

func (*NilHook) PostApply 

func (*NilHook) PostApply(addr addrs.AbsResourceInstance, gen states.Generation, newState cty.Value, err error) (HookAction, error)

func (*NilHook) PostDiff 

func (*NilHook) PostDiff(addr addrs.AbsResourceInstance, gen states.Generation, action plans.Action, priorState, plannedNewState cty.Value) (HookAction, error)

func (*NilHook) PostImportState 

func (*NilHook) PostImportState(addr addrs.AbsResourceInstance, imported []providers.ImportedResource) (HookAction, error)

func (*NilHook) PostProvisionInstance 

func (*NilHook) PostProvisionInstance(addr addrs.AbsResourceInstance, state cty.Value) (HookAction, error)

func (*NilHook) PostProvisionInstanceStep 

func (*NilHook) PostProvisionInstanceStep(addr addrs.AbsResourceInstance, typeName string, err error) (HookAction, error)

func (*NilHook) PostRefresh 

func (*NilHook) PostRefresh(addr addrs.AbsResourceInstance, gen states.Generation, priorState cty.Value, newState cty.Value) (HookAction, error)

func (*NilHook) PostStateUpdate 

func (*NilHook) PostStateUpdate(new *states.State) (HookAction, error)

func (*NilHook) PreApply 

func (*NilHook) PreApply(addr addrs.AbsResourceInstance, gen states.Generation, action plans.Action, priorState, plannedNewState cty.Value) (HookAction, error)

func (*NilHook) PreDiff 

func (*NilHook) PreDiff(addr addrs.AbsResourceInstance, gen states.Generation, priorState, proposedNewState cty.Value) (HookAction, error)

func (*NilHook) PreImportState 

func (*NilHook) PreImportState(addr addrs.AbsResourceInstance, importID string) (HookAction, error)

func (*NilHook) PreProvisionInstance 

func (*NilHook) PreProvisionInstance(addr addrs.AbsResourceInstance, state cty.Value) (HookAction, error)

func (*NilHook) PreProvisionInstanceStep 

func (*NilHook) PreProvisionInstanceStep(addr addrs.AbsResourceInstance, typeName string) (HookAction, error)

func (*NilHook) PreRefresh 

func (*NilHook) PreRefresh(addr addrs.AbsResourceInstance, gen states.Generation, priorState cty.Value) (HookAction, error)

func (*NilHook) ProvisionOutput 

func (*NilHook) ProvisionOutput(addr addrs.AbsResourceInstance, typeName string, line string)

type NodeAbstractProvider 

type NodeAbstractProvider struct {
	Addr addrs.AbsProviderConfig

	Config *configs.Provider
	Schema *configschema.Block
}

NodeAbstractProvider represents a provider that has no associated operations. It registers all the common interfaces across operations for providers.

func (*NodeAbstractProvider) AttachProvider 

func (n *NodeAbstractProvider) AttachProvider(c *configs.Provider)

GraphNodeAttachProvider

func (*NodeAbstractProvider) AttachProviderConfigSchema 

func (n *NodeAbstractProvider) AttachProviderConfigSchema(schema *configschema.Block)

GraphNodeAttachProviderConfigSchema impl.

func (*NodeAbstractProvider) DotNode 

func (n *NodeAbstractProvider) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

GraphNodeDotter impl.

func (*NodeAbstractProvider) Name 

func (n *NodeAbstractProvider) Name() string

func (*NodeAbstractProvider) Path 

func (n *NodeAbstractProvider) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeAbstractProvider) ProviderAddr 

func (n *NodeAbstractProvider) ProviderAddr() addrs.AbsProviderConfig

GraphNodeProvider

func (*NodeAbstractProvider) ProviderConfig 

func (n *NodeAbstractProvider) ProviderConfig() *configs.Provider

GraphNodeProvider

func (*NodeAbstractProvider) References 

func (n *NodeAbstractProvider) References() []*addrs.Reference

GraphNodeReferencer

func (*NodeAbstractProvider) RemoveIfNotTargeted 

func (n *NodeAbstractProvider) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

type NodeAbstractResource 

type NodeAbstractResource struct {
	Addr addrs.AbsResource // Addr is the address for this resource

	Schema        *configschema.Block // Schema for processing the configuration body
	SchemaVersion uint64              // Schema version of "Schema", as decided by the provider
	Config        *configs.Resource   // Config is the resource in the config

	ProvisionerSchemas map[string]*configschema.Block

	Targets []addrs.Targetable // Set from GraphNodeTargetable

	// The address of the provider this resource will use
	ResolvedProvider addrs.AbsProviderConfig
}

NodeAbstractResource represents a resource that has no associated operations. It registers all the interfaces for a resource that common across multiple operation types.

func NewNodeAbstractResource 

func NewNodeAbstractResource(addr addrs.AbsResource) *NodeAbstractResource

NewNodeAbstractResource creates an abstract resource graph node for the given absolute resource address.

func (*NodeAbstractResource) AttachProvisionerSchema 

func (n *NodeAbstractResource) AttachProvisionerSchema(name string, schema *configschema.Block)

GraphNodeProvisionerConsumer

func (*NodeAbstractResource) AttachResourceConfig 

func (n *NodeAbstractResource) AttachResourceConfig(c *configs.Resource)

GraphNodeAttachResourceConfig

func (*NodeAbstractResource) AttachResourceSchema 

func (n *NodeAbstractResource) AttachResourceSchema(schema *configschema.Block, version uint64)

GraphNodeAttachResourceSchema impl

func (*NodeAbstractResource) DotNode 

func (n *NodeAbstractResource) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

GraphNodeDotter impl.

func (*NodeAbstractResource) Name 

func (n *NodeAbstractResource) Name() string

func (*NodeAbstractResource) Path 

func (n *NodeAbstractResource) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeAbstractResource) ProvidedBy 

func (n *NodeAbstractResource) ProvidedBy() (addrs.AbsProviderConfig, bool)

GraphNodeProviderConsumer

func (*NodeAbstractResource) ProvisionedBy 

func (n *NodeAbstractResource) ProvisionedBy() []string

GraphNodeProvisionerConsumer

func (*NodeAbstractResource) ReferenceableAddrs 

func (n *NodeAbstractResource) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable

func (*NodeAbstractResource) References 

func (n *NodeAbstractResource) References() []*addrs.Reference

GraphNodeReferencer

func (*NodeAbstractResource) ResourceAddr 

func (n *NodeAbstractResource) ResourceAddr() addrs.AbsResource

GraphNodeResource

func (*NodeAbstractResource) ResourceAddress 

func (n *NodeAbstractResource) ResourceAddress() *ResourceAddress

GraphNodeAddressable, TODO: remove, used by target, should unify

func (*NodeAbstractResource) SetProvider 

func (n *NodeAbstractResource) SetProvider(p addrs.AbsProviderConfig)

func (*NodeAbstractResource) SetTargets 

func (n *NodeAbstractResource) SetTargets(targets []addrs.Targetable)

GraphNodeTargetable

type NodeAbstractResourceInstance 

type NodeAbstractResourceInstance struct {
	NodeAbstractResource
	InstanceKey addrs.InstanceKey

	ResourceState *states.Resource
}

NodeAbstractResourceInstance represents a resource instance with no associated operations. It embeds NodeAbstractResource but additionally contains an instance key, used to identify one of potentially many instances that were created from a resource in configuration, e.g. using the "count" or "for_each" arguments.

func NewNodeAbstractResourceInstance 

func NewNodeAbstractResourceInstance(addr addrs.AbsResourceInstance) *NodeAbstractResourceInstance

NewNodeAbstractResourceInstance creates an abstract resource instance graph node for the given absolute resource instance address.

func (*NodeAbstractResourceInstance) AttachResourceState 

func (n *NodeAbstractResourceInstance) AttachResourceState(s *states.Resource)

GraphNodeAttachResourceState

func (*NodeAbstractResourceInstance) Name 

func (n *NodeAbstractResourceInstance) Name() string

func (*NodeAbstractResourceInstance) ProvidedBy 

func (n *NodeAbstractResourceInstance) ProvidedBy() (addrs.AbsProviderConfig, bool)

GraphNodeProviderConsumer

func (*NodeAbstractResourceInstance) ReferenceableAddrs 

func (n *NodeAbstractResourceInstance) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable

func (*NodeAbstractResourceInstance) References 

func (n *NodeAbstractResourceInstance) References() []*addrs.Reference

GraphNodeReferencer

func (*NodeAbstractResourceInstance) ResourceInstanceAddr 

func (n *NodeAbstractResourceInstance) ResourceInstanceAddr() addrs.AbsResourceInstance

GraphNodeResourceInstance

func (*NodeAbstractResourceInstance) StateReferences 

func (n *NodeAbstractResourceInstance) StateReferences() []addrs.Referenceable

StateReferences returns the dependencies to put into the state for this resource.

type NodeApplyableModuleVariable 

type NodeApplyableModuleVariable struct {
	Addr   addrs.AbsInputVariableInstance
	Config *configs.Variable // Config is the var in the config
	Expr   hcl.Expression    // Expr is the value expression given in the call
}

NodeApplyableModuleVariable represents a module variable input during the apply step.

func (*NodeApplyableModuleVariable) DotNode 

func (n *NodeApplyableModuleVariable) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

dag.GraphNodeDotter impl.

func (*NodeApplyableModuleVariable) EvalTree 

func (n *NodeApplyableModuleVariable) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeApplyableModuleVariable) Name 

func (n *NodeApplyableModuleVariable) Name() string

func (*NodeApplyableModuleVariable) Path 

func (n *NodeApplyableModuleVariable) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeApplyableModuleVariable) ReferenceOutside 

func (n *NodeApplyableModuleVariable) ReferenceOutside() (selfPath, referencePath addrs.ModuleInstance)

GraphNodeReferenceOutside implementation

func (*NodeApplyableModuleVariable) ReferenceableAddrs 

func (n *NodeApplyableModuleVariable) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable

func (*NodeApplyableModuleVariable) References 

func (n *NodeApplyableModuleVariable) References() []*addrs.Reference

GraphNodeReferencer

func (*NodeApplyableModuleVariable) RemoveIfNotTargeted 

func (n *NodeApplyableModuleVariable) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

type NodeApplyableOutput 

type NodeApplyableOutput struct {
	Addr   addrs.AbsOutputValue
	Config *configs.Output // Config is the output in the config
}

NodeApplyableOutput represents an output that is "applyable": it is ready to be applied.

func (*NodeApplyableOutput) DotNode 

func (n *NodeApplyableOutput) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

dag.GraphNodeDotter impl.

func (*NodeApplyableOutput) EvalTree 

func (n *NodeApplyableOutput) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeApplyableOutput) Name 

func (n *NodeApplyableOutput) Name() string

func (*NodeApplyableOutput) Path 

func (n *NodeApplyableOutput) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeApplyableOutput) ReferenceOutside 

func (n *NodeApplyableOutput) ReferenceOutside() (selfPath, referencePath addrs.ModuleInstance)

GraphNodeReferenceOutside implementation

func (*NodeApplyableOutput) ReferenceableAddrs 

func (n *NodeApplyableOutput) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable

func (*NodeApplyableOutput) References 

func (n *NodeApplyableOutput) References() []*addrs.Reference

GraphNodeReferencer

func (*NodeApplyableOutput) RemoveIfNotTargeted 

func (n *NodeApplyableOutput) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

func (*NodeApplyableOutput) TargetDownstream 

func (n *NodeApplyableOutput) TargetDownstream(targetedDeps, untargetedDeps *dag.Set) bool

GraphNodeTargetDownstream

type NodeApplyableProvider 

type NodeApplyableProvider struct {
	*NodeAbstractProvider
}

NodeApplyableProvider represents a provider during an apply.

func (*NodeApplyableProvider) EvalTree 

func (n *NodeApplyableProvider) EvalTree() EvalNode

GraphNodeEvalable

type NodeApplyableResource 

type NodeApplyableResource struct {
	*NodeAbstractResource
}

NodeApplyableResource represents a resource that is "applyable": it may need to have its record in the state adjusted to match configuration.

Unlike in the plan walk, this resource node does not DynamicExpand. Instead, it should be inserted into the same graph as any instances of the nodes with dependency edges ensuring that the resource is evaluated before any of its instances, which will turn ensure that the whole-resource record in the state is suitably prepared to receive any updates to instances.

func (*NodeApplyableResource) EvalTree 

func (n *NodeApplyableResource) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeApplyableResource) Name 

func (n *NodeApplyableResource) Name() string

func (*NodeApplyableResource) References 

func (n *NodeApplyableResource) References() []*addrs.Reference

type NodeApplyableResourceInstance 

type NodeApplyableResourceInstance struct {
	*NodeAbstractResourceInstance
	// contains filtered or unexported fields
}

NodeApplyableResourceInstance represents a resource instance that is "applyable": it is ready to be applied and is represented by a diff.

This node is for a specific instance of a resource. It will usually be accompanied in the graph by a NodeApplyableResource representing its containing resource, and should depend on that node to ensure that the state is properly prepared to receive changes to instances.

func (*NodeApplyableResourceInstance) AttachDestroyNode 

func (n *NodeApplyableResourceInstance) AttachDestroyNode(d GraphNodeDestroyerCBD)

GraphNodeAttachDestroyer

func (*NodeApplyableResourceInstance) CreateAddr 

func (n *NodeApplyableResourceInstance) CreateAddr() *addrs.AbsResourceInstance

GraphNodeCreator

func (*NodeApplyableResourceInstance) EvalTree 

func (n *NodeApplyableResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeApplyableResourceInstance) References 

func (n *NodeApplyableResourceInstance) References() []*addrs.Reference

GraphNodeReferencer, overriding NodeAbstractResourceInstance

func (*NodeApplyableResourceInstance) SetPreallocatedDeposedKey 

func (n *NodeApplyableResourceInstance) SetPreallocatedDeposedKey(key states.DeposedKey)

type NodeCountBoundary 

type NodeCountBoundary struct {
	Config *configs.Config
}

NodeCountBoundary fixes up any transitions between "each modes" in objects saved in state, such as switching from NoEach to EachInt.

func (*NodeCountBoundary) EvalTree 

func (n *NodeCountBoundary) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeCountBoundary) Name 

func (n *NodeCountBoundary) Name() string

type NodeDestroyDeposedResourceInstanceObject 

type NodeDestroyDeposedResourceInstanceObject struct {
	*NodeAbstractResourceInstance
	DeposedKey states.DeposedKey
}

NodeDestroyDeposedResourceInstanceObject represents deposed resource instance objects during apply. Nodes of this type are inserted by DiffTransformer when the planned changeset contains "delete" changes for deposed instance objects, and its only supported operation is to destroy and then forget the associated object.

func (*NodeDestroyDeposedResourceInstanceObject) CreateBeforeDestroy 

func (n *NodeDestroyDeposedResourceInstanceObject) CreateBeforeDestroy() bool

GraphNodeDestroyerCBD

func (*NodeDestroyDeposedResourceInstanceObject) DeposedInstanceObjectKey 

func (n *NodeDestroyDeposedResourceInstanceObject) DeposedInstanceObjectKey() states.DeposedKey

func (*NodeDestroyDeposedResourceInstanceObject) DestroyAddr 

func (n *NodeDestroyDeposedResourceInstanceObject) DestroyAddr() *addrs.AbsResourceInstance

GraphNodeDestroyer

func (*NodeDestroyDeposedResourceInstanceObject) EvalTree 

func (n *NodeDestroyDeposedResourceInstanceObject) EvalTree() EvalNode

GraphNodeEvalable impl.

func (*NodeDestroyDeposedResourceInstanceObject) ModifyCreateBeforeDestroy 

func (n *NodeDestroyDeposedResourceInstanceObject) ModifyCreateBeforeDestroy(v bool) error

GraphNodeDestroyerCBD

func (*NodeDestroyDeposedResourceInstanceObject) Name 

func (n *NodeDestroyDeposedResourceInstanceObject) Name() string

func (*NodeDestroyDeposedResourceInstanceObject) ReferenceableAddrs 

func (n *NodeDestroyDeposedResourceInstanceObject) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable implementation, overriding the one from NodeAbstractResourceInstance

func (*NodeDestroyDeposedResourceInstanceObject) References 

func (n *NodeDestroyDeposedResourceInstanceObject) References() []*addrs.Reference

GraphNodeReferencer implementation, overriding the one from NodeAbstractResourceInstance

type NodeDestroyResource 

type NodeDestroyResource struct {
	*NodeAbstractResource
}

NodeDestroyResourceInstance represents a resource that is to be destroyed.

Destroying a resource is a state-only operation: it is the individual instances being destroyed that affects remote objects. During graph construction, NodeDestroyResource should always depend on any other node related to the given resource, since it's just a final cleanup to avoid leaving skeleton resource objects in state after their instances have all been destroyed.

func (*NodeDestroyResource) EvalTree 

func (n *NodeDestroyResource) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeDestroyResource) Name 

func (n *NodeDestroyResource) Name() string

func (*NodeDestroyResource) ReferenceableAddrs 

func (n *NodeDestroyResource) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable, overriding NodeAbstractResource

func (*NodeDestroyResource) References 

func (n *NodeDestroyResource) References() []*addrs.Reference

GraphNodeReferencer, overriding NodeAbstractResource

type NodeDestroyResourceInstance 

type NodeDestroyResourceInstance struct {
	*NodeAbstractResourceInstance

	// If DeposedKey is set to anything other than states.NotDeposed then
	// this node destroys a deposed object of the associated instance
	// rather than its current object.
	DeposedKey states.DeposedKey

	CreateBeforeDestroyOverride *bool
}

NodeDestroyResourceInstance represents a resource instance that is to be destroyed.

func (*NodeDestroyResourceInstance) CreateBeforeDestroy 

func (n *NodeDestroyResourceInstance) CreateBeforeDestroy() bool

GraphNodeDestroyerCBD

func (*NodeDestroyResourceInstance) DestroyAddr 

func (n *NodeDestroyResourceInstance) DestroyAddr() *addrs.AbsResourceInstance

GraphNodeDestroyer

func (*NodeDestroyResourceInstance) EvalTree 

func (n *NodeDestroyResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeDestroyResourceInstance) ModifyCreateBeforeDestroy 

func (n *NodeDestroyResourceInstance) ModifyCreateBeforeDestroy(v bool) error

GraphNodeDestroyerCBD

func (*NodeDestroyResourceInstance) Name 

func (n *NodeDestroyResourceInstance) Name() string

func (*NodeDestroyResourceInstance) ReferenceableAddrs 

func (n *NodeDestroyResourceInstance) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable, overriding NodeAbstractResource

func (*NodeDestroyResourceInstance) References 

func (n *NodeDestroyResourceInstance) References() []*addrs.Reference

GraphNodeReferencer, overriding NodeAbstractResource

type NodeDestroyableDataResourceInstance 

type NodeDestroyableDataResourceInstance struct {
	*NodeAbstractResourceInstance
}

NodeDestroyableDataResourceInstance represents a resource that is "destroyable": it is ready to be destroyed.

func (*NodeDestroyableDataResourceInstance) EvalTree 

func (n *NodeDestroyableDataResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NodeDestroyableOutput 

type NodeDestroyableOutput struct {
	Addr   addrs.AbsOutputValue
	Config *configs.Output // Config is the output in the config
}

NodeDestroyableOutput represents an output that is "destroybale": its application will remove the output from the state.

func (*NodeDestroyableOutput) DotNode 

func (n *NodeDestroyableOutput) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

dag.GraphNodeDotter impl.

func (*NodeDestroyableOutput) EvalTree 

func (n *NodeDestroyableOutput) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeDestroyableOutput) Name 

func (n *NodeDestroyableOutput) Name() string

func (*NodeDestroyableOutput) Path 

func (n *NodeDestroyableOutput) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeDestroyableOutput) References 

func (n *NodeDestroyableOutput) References() []*addrs.Reference

GraphNodeReferencer

func (*NodeDestroyableOutput) RemoveIfNotTargeted 

func (n *NodeDestroyableOutput) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

func (*NodeDestroyableOutput) TargetDownstream 

func (n *NodeDestroyableOutput) TargetDownstream(targetedDeps, untargetedDeps *dag.Set) bool

This will keep the destroy node in the graph if its corresponding output node is also in the destroy graph.

type NodeDisabledProvider 

type NodeDisabledProvider struct {
	*NodeAbstractProvider
}

NodeDisabledProvider represents a provider that is disabled. A disabled provider does nothing. It exists to properly set inheritance information for child providers.

func (*NodeDisabledProvider) Name 

func (n *NodeDisabledProvider) Name() string

type NodeEvalableProvider 

type NodeEvalableProvider struct {
	*NodeAbstractProvider
}

NodeEvalableProvider represents a provider during an "eval" walk. This special provider node type just initializes a provider and fetches its schema, without configuring it or otherwise interacting with it.

func (*NodeEvalableProvider) EvalTree 

func (n *NodeEvalableProvider) EvalTree() EvalNode

GraphNodeEvalable

type NodeLocal 

type NodeLocal struct {
	Addr   addrs.AbsLocalValue
	Config *configs.Local
}

NodeLocal represents a named local value in a particular module.

Local value nodes only have one operation, common to all walk types: evaluate the result and place it in state.

func (*NodeLocal) DotNode 

func (n *NodeLocal) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

dag.GraphNodeDotter impl.

func (*NodeLocal) EvalTree 

func (n *NodeLocal) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeLocal) Name 

func (n *NodeLocal) Name() string

func (*NodeLocal) Path 

func (n *NodeLocal) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeLocal) ReferenceableAddrs 

func (n *NodeLocal) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable

func (*NodeLocal) References 

func (n *NodeLocal) References() []*addrs.Reference

GraphNodeReferencer

func (*NodeLocal) RemoveIfNotTargeted 

func (n *NodeLocal) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

type NodeModuleRemoved 

type NodeModuleRemoved struct {
	Addr addrs.ModuleInstance
}

NodeModuleRemoved represents a module that is no longer in the config.

func (*NodeModuleRemoved) EvalTree 

func (n *NodeModuleRemoved) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeModuleRemoved) Name 

func (n *NodeModuleRemoved) Name() string

func (*NodeModuleRemoved) Path 

func (n *NodeModuleRemoved) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeModuleRemoved) ReferenceOutside 

func (n *NodeModuleRemoved) ReferenceOutside() (selfPath, referencePath addrs.ModuleInstance)

func (*NodeModuleRemoved) References 

func (n *NodeModuleRemoved) References() []*addrs.Reference

func (*NodeModuleRemoved) RemoveIfNotTargeted added in v1.3.0 

func (n *NodeModuleRemoved) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

type NodeOutputOrphan 

type NodeOutputOrphan struct {
	Addr addrs.AbsOutputValue
}

NodeOutputOrphan represents an output that is an orphan.

func (*NodeOutputOrphan) EvalTree 

func (n *NodeOutputOrphan) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeOutputOrphan) Name 

func (n *NodeOutputOrphan) Name() string

func (*NodeOutputOrphan) Path 

func (n *NodeOutputOrphan) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeOutputOrphan) ReferenceOutside 

func (n *NodeOutputOrphan) ReferenceOutside() (selfPath, referencePath addrs.ModuleInstance)

GraphNodeReferenceOutside implementation

func (*NodeOutputOrphan) ReferenceableAddrs 

func (n *NodeOutputOrphan) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable

type NodePlanDeposedResourceInstanceObject 

type NodePlanDeposedResourceInstanceObject struct {
	*NodeAbstractResourceInstance
	DeposedKey states.DeposedKey
}

NodePlanDeposedResourceInstanceObject represents deposed resource instance objects during plan. These are distinct from the primary object for each resource instance since the only valid operation to do with them is to destroy them.

This node type is also used during the refresh walk to ensure that the record of a deposed object is up-to-date before we plan to destroy it.

func (*NodePlanDeposedResourceInstanceObject) DeposedInstanceObjectKey 

func (n *NodePlanDeposedResourceInstanceObject) DeposedInstanceObjectKey() states.DeposedKey

func (*NodePlanDeposedResourceInstanceObject) EvalTree 

func (n *NodePlanDeposedResourceInstanceObject) EvalTree() EvalNode

GraphNodeEvalable impl.

func (*NodePlanDeposedResourceInstanceObject) Name 

func (n *NodePlanDeposedResourceInstanceObject) Name() string

func (*NodePlanDeposedResourceInstanceObject) ReferenceableAddrs 

func (n *NodePlanDeposedResourceInstanceObject) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable implementation, overriding the one from NodeAbstractResourceInstance

func (*NodePlanDeposedResourceInstanceObject) References 

func (n *NodePlanDeposedResourceInstanceObject) References() []*addrs.Reference

GraphNodeReferencer implementation, overriding the one from NodeAbstractResourceInstance

type NodePlanDestroyableResourceInstance 

type NodePlanDestroyableResourceInstance struct {
	*NodeAbstractResourceInstance
}

NodePlanDestroyableResourceInstance represents a resource that is ready to be planned for destruction.

func (*NodePlanDestroyableResourceInstance) DestroyAddr 

func (n *NodePlanDestroyableResourceInstance) DestroyAddr() *addrs.AbsResourceInstance

GraphNodeDestroyer

func (*NodePlanDestroyableResourceInstance) EvalTree 

func (n *NodePlanDestroyableResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NodePlannableResource 

type NodePlannableResource struct {
	*NodeAbstractResource

	// ForceCreateBeforeDestroy might be set via our GraphNodeDestroyerCBD
	// during graph construction, if dependencies require us to force this
	// on regardless of what the configuration says.
	ForceCreateBeforeDestroy *bool
}

NodePlannableResource represents a resource that is "plannable": it is ready to be planned in order to create a diff.

func (*NodePlannableResource) CreateBeforeDestroy 

func (n *NodePlannableResource) CreateBeforeDestroy() bool

GraphNodeDestroyerCBD

func (*NodePlannableResource) DynamicExpand 

func (n *NodePlannableResource) DynamicExpand(ctx EvalContext) (*Graph, error)

GraphNodeDynamicExpandable

func (*NodePlannableResource) EvalTree 

func (n *NodePlannableResource) EvalTree() EvalNode

GraphNodeEvalable

func (*NodePlannableResource) ModifyCreateBeforeDestroy 

func (n *NodePlannableResource) ModifyCreateBeforeDestroy(v bool) error

GraphNodeDestroyerCBD

type NodePlannableResourceInstance 

type NodePlannableResourceInstance struct {
	*NodeAbstractResourceInstance
	ForceCreateBeforeDestroy bool
}

NodePlannableResourceInstance represents a _single_ resource instance that is plannable. This means this represents a single count index, for example.

func (*NodePlannableResourceInstance) EvalTree 

func (n *NodePlannableResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NodePlannableResourceInstanceOrphan 

type NodePlannableResourceInstanceOrphan struct {
	*NodeAbstractResourceInstance
}

NodePlannableResourceInstanceOrphan represents a resource that is "applyable": it is ready to be applied and is represented by a diff.

func (*NodePlannableResourceInstanceOrphan) EvalTree 

func (n *NodePlannableResourceInstanceOrphan) EvalTree() EvalNode

GraphNodeEvalable

func (*NodePlannableResourceInstanceOrphan) Name 

func (n *NodePlannableResourceInstanceOrphan) Name() string

type NodeProvisioner 

type NodeProvisioner struct {
	NameValue string
	PathValue addrs.ModuleInstance
}

NodeProvisioner represents a provider that has no associated operations. It registers all the common interfaces across operations for providers.

func (*NodeProvisioner) EvalTree 

func (n *NodeProvisioner) EvalTree() EvalNode

GraphNodeEvalable impl.

func (*NodeProvisioner) Name 

func (n *NodeProvisioner) Name() string

func (*NodeProvisioner) Path 

func (n *NodeProvisioner) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeProvisioner) ProvisionerName 

func (n *NodeProvisioner) ProvisionerName() string

GraphNodeProvisioner

type NodeRefreshableDataResource 

type NodeRefreshableDataResource struct {
	*NodeAbstractResource
}

NodeRefreshableDataResource represents a resource that is "refreshable".

func (*NodeRefreshableDataResource) DynamicExpand 

func (n *NodeRefreshableDataResource) DynamicExpand(ctx EvalContext) (*Graph, error)

GraphNodeDynamicExpandable

type NodeRefreshableDataResourceInstance 

type NodeRefreshableDataResourceInstance struct {
	*NodeAbstractResourceInstance
}

NodeRefreshableDataResourceInstance represents a single resource instance that is refreshable.

func (*NodeRefreshableDataResourceInstance) EvalTree 

func (n *NodeRefreshableDataResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NodeRefreshableManagedResource 

type NodeRefreshableManagedResource struct {
	*NodeAbstractResource
}

NodeRefreshableManagedResource represents a resource that is expanabled into NodeRefreshableManagedResourceInstance. Resource count orphans are also added.

func (*NodeRefreshableManagedResource) DynamicExpand 

func (n *NodeRefreshableManagedResource) DynamicExpand(ctx EvalContext) (*Graph, error)

GraphNodeDynamicExpandable

type NodeRefreshableManagedResourceInstance 

type NodeRefreshableManagedResourceInstance struct {
	*NodeAbstractResourceInstance
}

NodeRefreshableManagedResourceInstance represents a resource that is "applyable": it is ready to be applied and is represented by a diff.

func (*NodeRefreshableManagedResourceInstance) DestroyAddr 

func (n *NodeRefreshableManagedResourceInstance) DestroyAddr() *addrs.AbsResourceInstance

GraphNodeDestroyer

func (*NodeRefreshableManagedResourceInstance) EvalTree 

func (n *NodeRefreshableManagedResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NodeRootVariable 

type NodeRootVariable struct {
	Addr   addrs.InputVariable
	Config *configs.Variable
}

NodeRootVariable represents a root variable input.

func (*NodeRootVariable) DotNode 

func (n *NodeRootVariable) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

dag.GraphNodeDotter impl.

func (*NodeRootVariable) Name 

func (n *NodeRootVariable) Name() string

func (*NodeRootVariable) Path 

func (n *NodeRootVariable) Path() addrs.ModuleInstance

GraphNodeSubPath

func (*NodeRootVariable) ReferenceableAddrs 

func (n *NodeRootVariable) ReferenceableAddrs() []addrs.Referenceable

GraphNodeReferenceable

type NodeValidatableResource 

type NodeValidatableResource struct {
	*NodeAbstractResource
}

NodeValidatableResource represents a resource that is used for validation only.

func (*NodeValidatableResource) EvalTree 

func (n *NodeValidatableResource) EvalTree() EvalNode

GraphNodeEvalable

type NullGraphWalker 

type NullGraphWalker struct{}

NullGraphWalker is a GraphWalker implementation that does nothing. This can be embedded within other GraphWalker implementations for easily implementing all the required functions.

func (NullGraphWalker) EnterEvalTree 

func (NullGraphWalker) EnterEvalTree(v dag.Vertex, n EvalNode) EvalNode

func (NullGraphWalker) EnterPath 

func (NullGraphWalker) EnterPath(addrs.ModuleInstance) EvalContext

func (NullGraphWalker) EnterVertex 

func (NullGraphWalker) EnterVertex(dag.Vertex)

func (NullGraphWalker) ExitEvalTree 

func (NullGraphWalker) ExitEvalTree(dag.Vertex, interface{}, error) tfdiags.Diagnostics

func (NullGraphWalker) ExitPath 

func (NullGraphWalker) ExitPath(addrs.ModuleInstance)

func (NullGraphWalker) ExitVertex 

func (NullGraphWalker) ExitVertex(dag.Vertex, tfdiags.Diagnostics)

type OrphanOutputTransformer 

type OrphanOutputTransformer struct {
	Config *configs.Config // Root of config tree
	State  *states.State   // State is the root state
}

OrphanOutputTransformer finds the outputs that aren't present in the given config that are in the state and adds them to the graph for deletion.

func (*OrphanOutputTransformer) Transform 

func (t *OrphanOutputTransformer) Transform(g *Graph) error

type OrphanResourceCountTransformer 

type OrphanResourceCountTransformer struct {
	Concrete ConcreteResourceInstanceNodeFunc

	Count   int                  // Actual count of the resource, or -1 if count is not set at all
	ForEach map[string]cty.Value // The ForEach map on the resource
	Addr    addrs.AbsResource    // Addr of the resource to look for orphans
	State   *states.State        // Full global state
}

OrphanResourceCountTransformer is a GraphTransformer that adds orphans for an expanded count to the graph. The determination of this depends on the count argument given.

Orphans are found by comparing the count to what is found in the state. This transform assumes that if an element in the state is within the count bounds given, that it is not an orphan.

func (*OrphanResourceCountTransformer) Transform 

func (t *OrphanResourceCountTransformer) Transform(g *Graph) error

type OrphanResourceInstanceTransformer 

type OrphanResourceInstanceTransformer struct {
	Concrete ConcreteResourceInstanceNodeFunc

	// State is the global state. We require the global state to
	// properly find module orphans at our path.
	State *states.State

	// Config is the root node in the configuration tree. We'll look up
	// the appropriate note in this tree using the path in each node.
	Config *configs.Config
}

OrphanResourceInstanceTransformer is a GraphTransformer that adds orphaned resource instances to the graph. An "orphan" is an instance that is present in the state but belongs to a resource that is no longer present in the configuration.

This is not the transformer that deals with "count orphans" (instances that are no longer covered by a resource's "count" or "for_each" setting); that's handled instead by OrphanResourceCountTransformer.

func (*OrphanResourceInstanceTransformer) Transform 

func (t *OrphanResourceInstanceTransformer) Transform(g *Graph) error

type OrphanResourceTransformer 

type OrphanResourceTransformer struct {
	Concrete ConcreteResourceNodeFunc

	// State is the global state.
	State *states.State

	// Config is the root node in the configuration tree.
	Config *configs.Config
}

OrphanResourceTransformer is a GraphTransformer that adds orphaned resources to the graph. An "orphan" is a resource that is present in the state but no longer present in the config.

This is separate to OrphanResourceInstanceTransformer in that it deals with whole resources, rather than individual instances of resources. Orphan resource nodes are only used during apply to clean up leftover empty resource state skeletons, after all of the instances inside have been removed.

This transformer will also create edges in the graph to any pre-existing node that creates or destroys the entire orphaned resource or any of its instances, to ensure that the "orphan-ness" of a resource is always dealt with after all other aspects of it.

func (*OrphanResourceTransformer) Transform 

func (t *OrphanResourceTransformer) Transform(g *Graph) error

type OutputState 

type OutputState struct {
	// Sensitive describes whether the output is considered sensitive,
	// which may lead to masking the value on screen in some cases.
	Sensitive bool `json:"sensitive"`
	// Type describes the structure of Value. Valid values are "string",
	// "map" and "list"
	Type string `json:"type"`
	// Value contains the value of the output, in the structure described
	// by the Type field.
	Value interface{} `json:"value"`
	// contains filtered or unexported fields
}

OutputState is used to track the state relevant to a single output.

func (*OutputState) Equal 

func (s *OutputState) Equal(other *OutputState) bool

Equal compares two OutputState structures for equality. nil values are considered equal.

func (*OutputState) Lock 

func (s *OutputState) Lock()

func (*OutputState) String 

func (s *OutputState) String() string

func (*OutputState) Unlock 

func (s *OutputState) Unlock()

type OutputTransformer 

type OutputTransformer struct {
	Config *configs.Config
}

OutputTransformer is a GraphTransformer that adds all the outputs in the configuration to the graph.

This is done for the apply graph builder even if dependent nodes aren't changing since there is no downside: the state will be available even if the dependent items aren't changing.

func (*OutputTransformer) Transform 

func (t *OutputTransformer) Transform(g *Graph) error

type ParentProviderTransformer 

type ParentProviderTransformer struct{}

ParentProviderTransformer connects provider nodes to their parents.

This works by finding nodes that are both GraphNodeProviders and GraphNodeSubPath. It then connects the providers to their parent path. The parent provider is always at the root level.

func (*ParentProviderTransformer) Transform 

func (t *ParentProviderTransformer) Transform(g *Graph) error

type Plan 

type Plan struct {
	// Diff describes the resource actions that must be taken when this
	// plan is applied.
	Diff *Diff

	// Config represents the entire configuration that was present when this
	// plan was created.
	Config *configs.Config

	// State is the Terraform state that was current when this plan was
	// created.
	//
	// It is not allowed to apply a plan that has a stale state, since its
	// diff could be outdated.
	State *State

	// Vars retains the variables that were set when creating the plan, so
	// that the same variables can be applied during apply.
	Vars map[string]cty.Value

	// Targets, if non-empty, contains a set of resource address strings that
	// identify graph nodes that were selected as targets for plan.
	//
	// When targets are set, any graph node that is not directly targeted or
	// indirectly targeted via dependencies is excluded from the graph.
	Targets []string

	// TerraformVersion is the version of Terraform that was used to create
	// this plan.
	//
	// It is not allowed to apply a plan created with a different version of
	// Terraform, since the other fields of this structure may be interpreted
	// in different ways between versions.
	TerraformVersion string

	// ProviderSHA256s is a map giving the SHA256 hashes of the exact binaries
	// used as plugins for each provider during plan.
	//
	// These must match between plan and apply to ensure that the diff is
	// correctly interpreted, since different provider versions may have
	// different attributes or attribute value constraints.
	ProviderSHA256s map[string][]byte

	// Backend is the backend that this plan should use and store data with.
	Backend *BackendState

	// Destroy indicates that this plan was created for a full destroy operation
	Destroy bool
}

Plan represents a single Terraform execution plan, which contains all the information necessary to make an infrastructure change.

A plan has to contain basically the entire state of the world necessary to make a change: the state, diff, config, backend config, etc. This is so that it can run alone without any other data.

func ReadPlan 

func ReadPlan(src io.Reader) (*Plan, error)

ReadPlan reads a plan structure out of a reader in the format that was written by WritePlan.

func (*Plan) String 

func (p *Plan) String() string

type PlanGraphBuilder 

type PlanGraphBuilder struct {
	// Config is the configuration tree to build a plan from.
	Config *configs.Config

	// State is the current state
	State *states.State

	// Components is a factory for the plug-in components (providers and
	// provisioners) available for use.
	Components contextComponentFactory

	// Schemas is the repository of schemas we will draw from to analyse
	// the configuration.
	Schemas *Schemas

	// Targets are resources to target
	Targets []addrs.Targetable

	// DisableReduce, if true, will not reduce the graph. Great for testing.
	DisableReduce bool

	// Validate will do structural validation of the graph.
	Validate bool

	// CustomConcrete can be set to customize the node types created
	// for various parts of the plan. This is useful in order to customize
	// the plan behavior.
	CustomConcrete         bool
	ConcreteProvider       ConcreteProviderNodeFunc
	ConcreteResource       ConcreteResourceNodeFunc
	ConcreteResourceOrphan ConcreteResourceInstanceNodeFunc
	// contains filtered or unexported fields
}

PlanGraphBuilder implements GraphBuilder and is responsible for building a graph for planning (creating a Terraform Diff).

The primary difference between this graph and others:

  • Based on the config since it represents the target state

  • Ignores lifecycle options since no lifecycle events occur here. This simplifies the graph significantly since complex transforms such as create-before-destroy can be completely ignored.

func (*PlanGraphBuilder) Build 

func (b *PlanGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics)

See GraphBuilder

func (*PlanGraphBuilder) Steps 

func (b *PlanGraphBuilder) Steps() []GraphTransformer

See GraphBuilder

type PrefixUIInput 

type PrefixUIInput struct {
	IdPrefix    string
	QueryPrefix string
	UIInput     UIInput
}

PrefixUIInput is an implementation of UIInput that prefixes the ID with a string, allowing queries to be namespaced.

func (*PrefixUIInput) Input 

func (i *PrefixUIInput) Input(ctx context.Context, opts *InputOpts) (string, error)

type ProviderConfigTransformer 

type ProviderConfigTransformer struct {
	Providers []string
	Concrete  ConcreteProviderNodeFunc

	// Config is the root node of the configuration tree to add providers from.
	Config *configs.Config
	// contains filtered or unexported fields
}

ProviderConfigTransformer adds all provider nodes from the configuration and attaches the configs.

func (*ProviderConfigTransformer) Transform 

func (t *ProviderConfigTransformer) Transform(g *Graph) error

type ProviderSchema 

type ProviderSchema struct {
	Provider      *configschema.Block
	ResourceTypes map[string]*configschema.Block
	DataSources   map[string]*configschema.Block

	ResourceTypeSchemaVersions map[string]uint64
}

ProviderSchema represents the schema for a provider's own configuration and the configuration for some or all of its resources and data sources.

The completeness of this structure depends on how it was constructed. When constructed for a configuration, it will generally include only resource types and data sources used by that configuration.

func (*ProviderSchema) SchemaForResourceAddr 

func (ps *ProviderSchema) SchemaForResourceAddr(addr addrs.Resource) (schema *configschema.Block, version uint64)

SchemaForResourceAddr attempts to find a schema for the mode and type from the given resource address. Returns nil if no such schema is available.

func (*ProviderSchema) SchemaForResourceType 

func (ps *ProviderSchema) SchemaForResourceType(mode addrs.ResourceMode, typeName string) (schema *configschema.Block, version uint64)

SchemaForResourceType attempts to find a schema for the given mode and type. Returns nil if no such schema is available.

type ProviderSchemaRequest 

type ProviderSchemaRequest struct {
	ResourceTypes []string
	DataSources   []string
}

ProviderSchemaRequest is used to describe to a ResourceProvider which aspects of schema are required, when calling the GetSchema method.

type ProviderTransformer 

type ProviderTransformer struct {
	Config *configs.Config
}

ProviderTransformer is a GraphTransformer that maps resources to providers within the graph. This will error if there are any resources that don't map to proper resources.

func (*ProviderTransformer) Transform 

func (t *ProviderTransformer) Transform(g *Graph) error

type ProvisionerFactory 

type ProvisionerFactory = provisioners.Factory

ProvisionerFactory is a function type that creates a new instance of a provisioners.Interface.

type ProvisionerTransformer 

type ProvisionerTransformer struct{}

ProvisionerTransformer is a GraphTransformer that maps resources to provisioners within the graph. This will error if there are any resources that don't map to proper resources.

func (*ProvisionerTransformer) Transform 

func (t *ProvisionerTransformer) Transform(g *Graph) error

type ProvisionerUIOutput 

type ProvisionerUIOutput struct {
	InstanceAddr    addrs.AbsResourceInstance
	ProvisionerType string
	Hooks           []Hook
}

ProvisionerUIOutput is an implementation of UIOutput that calls a hook for the output so that the hooks can handle it.

func (*ProvisionerUIOutput) Output 

func (o *ProvisionerUIOutput) Output(msg string)

type PruneProviderTransformer 

type PruneProviderTransformer struct{}

PruneProviderTransformer removes any providers that are not actually used by anything, and provider proxies. This avoids the provider being initialized and configured. This both saves resources but also avoids errors since configuration may imply initialization which may require auth.

func (*PruneProviderTransformer) Transform 

func (t *PruneProviderTransformer) Transform(g *Graph) error

type PruneUnusedValuesTransformer 

type PruneUnusedValuesTransformer struct{}

PruneUnusedValuesTransformer is s GraphTransformer that removes local and output values which are not referenced in the graph. Since outputs and locals always need to be evaluated, if they reference a resource that is not available in the state the interpolation could fail.

func (*PruneUnusedValuesTransformer) Transform 

func (t *PruneUnusedValuesTransformer) Transform(g *Graph) error

type ReferenceMap 

type ReferenceMap struct {
	// contains filtered or unexported fields
}

ReferenceMap is a structure that can be used to efficiently check for references on a graph.

func NewReferenceMap 

func NewReferenceMap(vs []dag.Vertex) *ReferenceMap

NewReferenceMap is used to create a new reference map for the given set of vertices.

func (*ReferenceMap) References 

func (m *ReferenceMap) References(v dag.Vertex) ([]dag.Vertex, []addrs.Referenceable)

References returns the set of vertices that the given vertex refers to, and any referenced addresses that do not have corresponding vertices.

func (*ReferenceMap) Referrers 

func (m *ReferenceMap) Referrers(v dag.Vertex) []dag.Vertex

Referrers returns the set of vertices that refer to the given vertex.

type ReferenceTransformer 

type ReferenceTransformer struct{}

ReferenceTransformer is a GraphTransformer that connects all the nodes that reference each other in order to form the proper ordering.

func (*ReferenceTransformer) Transform 

func (t *ReferenceTransformer) Transform(g *Graph) error

type RefreshGraphBuilder 

type RefreshGraphBuilder struct {
	// Config is the configuration tree.
	Config *configs.Config

	// State is the prior state
	State *states.State

	// Components is a factory for the plug-in components (providers and
	// provisioners) available for use.
	Components contextComponentFactory

	// Schemas is the repository of schemas we will draw from to analyse
	// the configuration.
	Schemas *Schemas

	// Targets are resources to target
	Targets []addrs.Targetable

	// DisableReduce, if true, will not reduce the graph. Great for testing.
	DisableReduce bool

	// Validate will do structural validation of the graph.
	Validate bool
}

RefreshGraphBuilder implements GraphBuilder and is responsible for building a graph for refreshing (updating the Terraform state).

The primary difference between this graph and others:

  • Based on the state since it represents the only resources that need to be refreshed.

  • Ignores lifecycle options since no lifecycle events occur here. This simplifies the graph significantly since complex transforms such as create-before-destroy can be completely ignored.

func (*RefreshGraphBuilder) Build 

func (b *RefreshGraphBuilder) Build(path addrs.ModuleInstance) (*Graph, tfdiags.Diagnostics)

See GraphBuilder

func (*RefreshGraphBuilder) Steps 

func (b *RefreshGraphBuilder) Steps() []GraphTransformer

See GraphBuilder

type RemoteState 

type RemoteState struct {
	// Type controls the client we use for the remote state
	Type string `json:"type"`

	// Config is used to store arbitrary configuration that
	// is type specific
	Config map[string]string `json:"config"`
	// contains filtered or unexported fields
}

RemoteState is used to track the information about a remote state store that we push/pull state to.

func (*RemoteState) Empty 

func (r *RemoteState) Empty() bool

func (*RemoteState) Equals 

func (r *RemoteState) Equals(other *RemoteState) bool

func (*RemoteState) Lock 

func (s *RemoteState) Lock()

func (*RemoteState) Unlock 

func (s *RemoteState) Unlock()

type RemovableIfNotTargeted 

type RemovableIfNotTargeted interface {
	RemoveIfNotTargeted() bool
}

RemovableIfNotTargeted is a special interface for graph nodes that aren't directly addressable, but need to be removed from the graph when they are not targeted. (Nodes that are not directly targeted end up in the set of targeted nodes because something that _is_ targeted depends on them.) The initial use case for this interface is GraphNodeConfigVariable, which was having trouble interpolating for module variables in targeted scenarios that filtered out the resource node being referenced.

type RemovedModuleTransformer 

type RemovedModuleTransformer struct {
	Config *configs.Config // root node in the config tree
	State  *states.State
}

RemovedModuleTransformer implements GraphTransformer to add nodes indicating when a module was removed from the configuration.

func (*RemovedModuleTransformer) Transform 

func (t *RemovedModuleTransformer) Transform(g *Graph) error

type Resource 

type Resource struct {
	// These are all used by the new EvalNode stuff.
	Name       string
	Type       string
	CountIndex int

	// These aren't really used anymore anywhere, but we keep them around
	// since we haven't done a proper cleanup yet.
	Id           string
	Info         *InstanceInfo
	Config       *ResourceConfig
	Dependencies []string
	Diff         *InstanceDiff
	Provider     ResourceProvider
	State        *InstanceState
	Flags        ResourceFlag
}

Resource is a legacy way to identify a particular resource instance.

New code should use addrs.ResourceInstance instead. This is still here only for codepaths that haven't been updated yet.

func NewResource 

func NewResource(addr addrs.ResourceInstance) *Resource

NewResource constructs a legacy Resource object from an addrs.ResourceInstance value.

This is provided to shim to old codepaths that haven't been updated away from this type yet. Since this old type is not able to represent instances that have string keys, this function will panic if given a resource address that has a string key.

type ResourceAddress 

type ResourceAddress struct {
	// Addresses a resource falling somewhere in the module path
	// When specified alone, addresses all resources within a module path
	Path []string

	// Addresses a specific resource that occurs in a list
	Index int

	InstanceType    InstanceType
	InstanceTypeSet bool
	Name            string
	Type            string
	Mode            ResourceMode // significant only if InstanceTypeSet
}

ResourceAddress is a way of identifying an individual resource (or, eventually, a subset of resources) within the state. It is used for Targets.

func NewLegacyResourceAddress 

func NewLegacyResourceAddress(addr addrs.AbsResource) *ResourceAddress

NewLegacyResourceAddress creates a ResourceAddress from a new-style addrs.AbsResource value.

This is provided for shimming purposes so that we can still easily call into older functions that expect the ResourceAddress type.

func NewLegacyResourceInstanceAddress 

func NewLegacyResourceInstanceAddress(addr addrs.AbsResourceInstance) *ResourceAddress

NewLegacyResourceInstanceAddress creates a ResourceAddress from a new-style addrs.AbsResource value.

This is provided for shimming purposes so that we can still easily call into older functions that expect the ResourceAddress type.

func ParseResourceAddress 

func ParseResourceAddress(s string) (*ResourceAddress, error)

func ParseResourceAddressForInstanceDiff 

func ParseResourceAddressForInstanceDiff(path []string, key string) (*ResourceAddress, error)

ParseResourceAddressForInstanceDiff creates a ResourceAddress for a resource name as described in a module diff.

For historical reasons a different addressing format is used in this context. The internal format should not be shown in the UI and instead this function should be used to translate to a ResourceAddress and then, where appropriate, use the String method to produce a canonical resource address string for display in the UI.

The given path slice must be empty (or nil) for the root module, and otherwise consist of a sequence of module names traversing down into the module tree. If a non-nil path is provided, the caller must not modify its underlying array after passing it to this function.

func (*ResourceAddress) AbsResourceInstanceAddr 

func (addr *ResourceAddress) AbsResourceInstanceAddr() addrs.AbsResourceInstance

AbsResourceInstanceAddr converts the receiver, a legacy resource address, to the new resource address type addrs.AbsResourceInstance.

This method can be used only on an address that has a resource specification. It will panic if called on a module-path-only ResourceAddress. Use method HasResourceSpec to check before calling, in contexts where it is unclear.

addrs.AbsResourceInstance does not represent the "tainted" and "deposed" states, and so if these are present on the receiver then they are discarded.

This is provided for shimming purposes so that we can easily adapt functions that are returning the legacy ResourceAddress type, for situations where the new type is required.

func (*ResourceAddress) Contains 

func (addr *ResourceAddress) Contains(other *ResourceAddress) bool

Contains returns true if and only if the given node is contained within the receiver.

Containment is defined in terms of the module and resource heirarchy: a resource is contained within its module and any ancestor modules, an indexed resource instance is contained with the unindexed resource, etc.

func (*ResourceAddress) Copy 

func (r *ResourceAddress) Copy() *ResourceAddress

Copy returns a copy of this ResourceAddress

func (*ResourceAddress) Equals 

func (addr *ResourceAddress) Equals(raw interface{}) bool

Equals returns true if the receiver matches the given address.

The name of this method is a misnomer, since it doesn't test for exact equality. Instead, it tests that the _specified_ parts of each address match, treating any unspecified parts as wildcards.

See also Contains, which takes a more heirarchical approach to comparing addresses.

func (*ResourceAddress) HasResourceSpec 

func (r *ResourceAddress) HasResourceSpec() bool

HasResourceSpec returns true if the address has a resource spec, as defined in the documentation: 

https://www.terraform.io/docs/internals/resource-addressing.html

In particular, this returns false if the address contains only a module path, thus addressing the entire module.

func (*ResourceAddress) Less 

func (addr *ResourceAddress) Less(other *ResourceAddress) bool

Less returns true if and only if the receiver should be sorted before the given address when presenting a list of resource addresses to an end-user.

This sort uses lexicographic sorting for most components, but uses numeric sort for indices, thus causing index 10 to sort after index 9, rather than after index 1.

func (*ResourceAddress) MatchesResourceConfig 

func (r *ResourceAddress) MatchesResourceConfig(path addrs.Module, rc *configs.Resource) bool

MatchesResourceConfig returns true if the receiver matches the given configuration resource within the given _static_ module path. Note that the module path in a resource address is a _dynamic_ module path, and multiple dynamic resource paths may map to a single static path if count and for_each are in use on module calls.

Since resource configuration blocks represent all of the instances of a multi-instance resource, the index of the address (if any) is not considered.

func (*ResourceAddress) ModuleInstanceAddr 

func (addr *ResourceAddress) ModuleInstanceAddr() addrs.ModuleInstance

ModuleInstanceAddr returns the module path portion of the receiver as a addrs.ModuleInstance value.

func (*ResourceAddress) String 

func (r *ResourceAddress) String() string

String outputs the address that parses into this address.

func (*ResourceAddress) WholeModuleAddress 

func (r *ResourceAddress) WholeModuleAddress() *ResourceAddress

WholeModuleAddress returns the resource address that refers to all resources in the same module as the receiver address.

type ResourceAttrDiff 

type ResourceAttrDiff struct {
	Old         string      // Old Value
	New         string      // New Value
	NewComputed bool        // True if new value is computed (unknown currently)
	NewRemoved  bool        // True if this attribute is being removed
	NewExtra    interface{} // Extra information for the provider
	RequiresNew bool        // True if change requires new resource
	Sensitive   bool        // True if the data should not be displayed in UI output
	Type        DiffAttrType
}

ResourceAttrDiff is the diff of a single attribute of a resource.

func (*ResourceAttrDiff) Empty 

func (d *ResourceAttrDiff) Empty() bool

Empty returns true if the diff for this attr is neutral

func (*ResourceAttrDiff) GoString 

func (d *ResourceAttrDiff) GoString() string

type ResourceConfig 

type ResourceConfig struct {
	ComputedKeys []string
	Raw          map[string]interface{}
	Config       map[string]interface{}
}

ResourceConfig is a legacy type that was formerly used to represent interpolatable configuration blocks. It is now only used to shim to old APIs that still use this type, via NewResourceConfigShimmed.

func NewResourceConfigRaw 

func NewResourceConfigRaw(raw map[string]interface{}) *ResourceConfig

NewResourceConfigRaw constructs a ResourceConfig whose content is exactly the given value.

The given value may contain hcl2shim.UnknownVariableValue to signal that something is computed, but it must not contain unprocessed interpolation sequences as we might've seen in Terraform v0.11 and prior.

func NewResourceConfigShimmed 

func NewResourceConfigShimmed(val cty.Value, schema *configschema.Block) *ResourceConfig

NewResourceConfigShimmed wraps a cty.Value of object type in a legacy ResourceConfig object, so that it can be passed to older APIs that expect this wrapping.

The returned ResourceConfig is already interpolated and cannot be re-interpolated. It is, therefore, useful only to functions that expect an already-populated ResourceConfig which they then treat as read-only.

If the given value is not of an object type that conforms to the given schema then this function will panic.

func (*ResourceConfig) CheckSet 

func (c *ResourceConfig) CheckSet(keys []string) []error

CheckSet checks that the given list of configuration keys is properly set. If not, errors are returned for each unset key.

This is useful to be called in the Validate method of a ResourceProvider.

func (*ResourceConfig) DeepCopy 

func (c *ResourceConfig) DeepCopy() *ResourceConfig

DeepCopy performs a deep copy of the configuration. This makes it safe to modify any of the structures that are part of the resource config without affecting the original configuration.

func (*ResourceConfig) Equal 

func (c *ResourceConfig) Equal(c2 *ResourceConfig) bool

Equal checks the equality of two resource configs.

func (*ResourceConfig) Get 

func (c *ResourceConfig) Get(k string) (interface{}, bool)

Get looks up a configuration value by key and returns the value.

The second return value is true if the get was successful. Get will return the raw value if the key is computed, so you should pair this with IsComputed.

func (*ResourceConfig) GetRaw 

func (c *ResourceConfig) GetRaw(k string) (interface{}, bool)

GetRaw looks up a configuration value by key and returns the value, from the raw, uninterpolated config.

The second return value is true if the get was successful. Get will not succeed if the value is being computed.

func (*ResourceConfig) IsComputed 

func (c *ResourceConfig) IsComputed(k string) bool

IsComputed returns whether the given key is computed or not.

func (*ResourceConfig) IsSet 

func (c *ResourceConfig) IsSet(k string) bool

IsSet checks if the key in the configuration is set. A key is set if it has a value or the value is being computed (is unknown currently).

This function should be used rather than checking the keys of the raw configuration itself, since a key may be omitted from the raw configuration if it is being computed.

type ResourceCountTransformer 

type ResourceCountTransformer struct {
	Concrete ConcreteResourceInstanceNodeFunc
	Schema   *configschema.Block

	// Count is either the number of indexed instances to create, or -1 to
	// indicate that count is not set at all and thus a no-key instance should
	// be created.
	Count   int
	ForEach map[string]cty.Value
	Addr    addrs.AbsResource
}

ResourceCountTransformer is a GraphTransformer that expands the count out for a specific resource.

This assumes that the count is already interpolated.

func (*ResourceCountTransformer) Transform 

func (t *ResourceCountTransformer) Transform(g *Graph) error

type ResourceFlag 

type ResourceFlag byte

ResourceKind specifies what kind of instance we're working with, whether its a primary instance, a tainted instance, or an orphan.

type ResourceMode 

type ResourceMode int

ResourceMode is deprecated, use addrs.ResourceMode instead. It has been preserved for backwards compatibility. 

const (
	ManagedResourceMode ResourceMode = iota
	DataResourceMode
)

func (ResourceMode) String 

func (i ResourceMode) String() string

type ResourceProvider 

type ResourceProvider interface {

	// ProviderSchema returns the config schema for the main provider
	// configuration, as would appear in a "provider" block in the
	// configuration files.
	//
	// Currently not all providers support schema. Callers must therefore
	// first call Resources and DataSources and ensure that at least one
	// resource or data source has the SchemaAvailable flag set.
	GetSchema(*ProviderSchemaRequest) (*ProviderSchema, error)

	// Input was used prior to v0.12 to ask the provider to prompt the user
	// for input to complete the configuration.
	//
	// From v0.12 onwards this method is never called because Terraform Core
	// is able to handle the necessary input logic itself based on the
	// schema returned from GetSchema.
	Input(UIInput, *ResourceConfig) (*ResourceConfig, error)

	// Validate is called once at the beginning with the raw configuration
	// (no interpolation done) and can return a list of warnings and/or
	// errors.
	//
	// This is called once with the provider configuration only. It may not
	// be called at all if no provider configuration is given.
	//
	// This should not assume that any values of the configurations are valid.
	// The primary use case of this call is to check that required keys are
	// set.
	Validate(*ResourceConfig) ([]string, []error)

	// Configure configures the provider itself with the configuration
	// given. This is useful for setting things like access keys.
	//
	// This won't be called at all if no provider configuration is given.
	//
	// Configure returns an error if it occurred.
	Configure(*ResourceConfig) error

	// Resources returns all the available resource types that this provider
	// knows how to manage.
	Resources() []ResourceType

	// Stop is called when the provider should halt any in-flight actions.
	//
	// This can be used to make a nicer Ctrl-C experience for Terraform.
	// Even if this isn't implemented to do anything (just returns nil),
	// Terraform will still cleanly stop after the currently executing
	// graph node is complete. However, this API can be used to make more
	// efficient halts.
	//
	// Stop doesn't have to and shouldn't block waiting for in-flight actions
	// to complete. It should take any action it wants and return immediately
	// acknowledging it has received the stop request. Terraform core will
	// automatically not make any further API calls to the provider soon
	// after Stop is called (technically exactly once the currently executing
	// graph nodes are complete).
	//
	// The error returned, if non-nil, is assumed to mean that signaling the
	// stop somehow failed and that the user should expect potentially waiting
	// a longer period of time.
	Stop() error

	// ValidateResource is called once at the beginning with the raw
	// configuration (no interpolation done) and can return a list of warnings
	// and/or errors.
	//
	// This is called once per resource.
	//
	// This should not assume any of the values in the resource configuration
	// are valid since it is possible they have to be interpolated still.
	// The primary use case of this call is to check that the required keys
	// are set and that the general structure is correct.
	ValidateResource(string, *ResourceConfig) ([]string, []error)

	// Apply applies a diff to a specific resource and returns the new
	// resource state along with an error.
	//
	// If the resource state given has an empty ID, then a new resource
	// is expected to be created.
	Apply(
		*InstanceInfo,
		*InstanceState,
		*InstanceDiff) (*InstanceState, error)

	// Diff diffs a resource versus a desired state and returns
	// a diff.
	Diff(
		*InstanceInfo,
		*InstanceState,
		*ResourceConfig) (*InstanceDiff, error)

	// Refresh refreshes a resource and updates all of its attributes
	// with the latest information.
	Refresh(*InstanceInfo, *InstanceState) (*InstanceState, error)

	// ImportState requests that the given resource be imported.
	//
	// The returned InstanceState only requires ID be set. Importing
	// will always call Refresh after the state to complete it.
	//
	// IMPORTANT: InstanceState doesn't have the resource type attached
	// to it. A type must be specified on the state via the Ephemeral
	// field on the state.
	//
	// This function can return multiple states. Normally, an import
	// will map 1:1 to a physical resource. However, some resources map
	// to multiple. For example, an AWS security group may contain many rules.
	// Each rule is represented by a separate resource in Terraform,
	// therefore multiple states are returned.
	ImportState(*InstanceInfo, string) ([]*InstanceState, error)

	// ValidateDataSource is called once at the beginning with the raw
	// configuration (no interpolation done) and can return a list of warnings
	// and/or errors.
	//
	// This is called once per data source instance.
	//
	// This should not assume any of the values in the resource configuration
	// are valid since it is possible they have to be interpolated still.
	// The primary use case of this call is to check that the required keys
	// are set and that the general structure is correct.
	ValidateDataSource(string, *ResourceConfig) ([]string, []error)

	// DataSources returns all of the available data sources that this
	// provider implements.
	DataSources() []DataSource

	// ReadDataDiff produces a diff that represents the state that will
	// be produced when the given data source is read using a later call
	// to ReadDataApply.
	ReadDataDiff(*InstanceInfo, *ResourceConfig) (*InstanceDiff, error)

	// ReadDataApply initializes a data instance using the configuration
	// in a diff produced by ReadDataDiff.
	ReadDataApply(*InstanceInfo, *InstanceDiff) (*InstanceState, error)
}

ResourceProvider is an interface that must be implemented by any resource provider: the thing that creates and manages the resources in a Terraform configuration.

Important implementation note: All returned pointers, such as *ResourceConfig, *InstanceState, *InstanceDiff, etc. must not point to shared data. Terraform is highly parallel and assumes that this data is safe to read/write in parallel so it must be unique references. Note that it is safe to return arguments as results, however.

type ResourceProviderCloser 

type ResourceProviderCloser interface {
	Close() error
}

ResourceProviderCloser is an interface that providers that can close connections that aren't needed anymore must implement.

type ResourceProviderFactory 

type ResourceProviderFactory func() (ResourceProvider, error)

ResourceProviderFactory is a function type that creates a new instance of a resource provider.

func ResourceProviderFactoryFixed 

func ResourceProviderFactoryFixed(p ResourceProvider) ResourceProviderFactory

ResourceProviderFactoryFixed is a helper that creates a ResourceProviderFactory that just returns some fixed provider.

type ResourceProviderResolver 

type ResourceProviderResolver interface {
	// Given a constraint map, return a ResourceProviderFactory for each
	// requested provider. If some or all of the constraints cannot be
	// satisfied, return a non-nil slice of errors describing the problems.
	ResolveProviders(reqd discovery.PluginRequirements) (map[string]ResourceProviderFactory, []error)
}

ResourceProviderResolver is an interface implemented by objects that are able to resolve a given set of resource provider version constraints into ResourceProviderFactory callbacks.

func ResourceProviderResolverFixed 

func ResourceProviderResolverFixed(factories map[string]ResourceProviderFactory) ResourceProviderResolver

ResourceProviderResolverFixed returns a ResourceProviderResolver that has a fixed set of provider factories provided by the caller. The returned resolver ignores version constraints entirely and just returns the given factory for each requested provider name.

This function is primarily used in tests, to provide mock providers or in-process providers under test.

type ResourceProviderResolverFunc 

type ResourceProviderResolverFunc func(reqd discovery.PluginRequirements) (map[string]ResourceProviderFactory, []error)

ResourceProviderResolverFunc wraps a callback function and turns it into a ResourceProviderResolver implementation, for convenience in situations where a function and its associated closure are sufficient as a resolver implementation.

func (ResourceProviderResolverFunc) ResolveProviders 

func (f ResourceProviderResolverFunc) ResolveProviders(reqd discovery.PluginRequirements) (map[string]ResourceProviderFactory, []error)

ResolveProviders implements ResourceProviderResolver by calling the wrapped function.

type ResourceProvisioner 

type ResourceProvisioner interface {
	// GetConfigSchema returns the schema for the provisioner type's main
	// configuration block. This is called prior to Validate to enable some
	// basic structural validation to be performed automatically and to allow
	// the configuration to be properly extracted from potentially-ambiguous
	// configuration file formats.
	GetConfigSchema() (*configschema.Block, error)

	// Validate is called once at the beginning with the raw
	// configuration (no interpolation done) and can return a list of warnings
	// and/or errors.
	//
	// This is called once per resource.
	//
	// This should not assume any of the values in the resource configuration
	// are valid since it is possible they have to be interpolated still.
	// The primary use case of this call is to check that the required keys
	// are set and that the general structure is correct.
	Validate(*ResourceConfig) ([]string, []error)

	// Apply runs the provisioner on a specific resource and returns the new
	// resource state along with an error. Instead of a diff, the ResourceConfig
	// is provided since provisioners only run after a resource has been
	// newly created.
	Apply(UIOutput, *InstanceState, *ResourceConfig) error

	// Stop is called when the provisioner should halt any in-flight actions.
	//
	// This can be used to make a nicer Ctrl-C experience for Terraform.
	// Even if this isn't implemented to do anything (just returns nil),
	// Terraform will still cleanly stop after the currently executing
	// graph node is complete. However, this API can be used to make more
	// efficient halts.
	//
	// Stop doesn't have to and shouldn't block waiting for in-flight actions
	// to complete. It should take any action it wants and return immediately
	// acknowledging it has received the stop request. Terraform core will
	// automatically not make any further API calls to the provider soon
	// after Stop is called (technically exactly once the currently executing
	// graph nodes are complete).
	//
	// The error returned, if non-nil, is assumed to mean that signaling the
	// stop somehow failed and that the user should expect potentially waiting
	// a longer period of time.
	Stop() error
}

ResourceProvisioner is an interface that must be implemented by any resource provisioner: the thing that initializes resources in a Terraform configuration.

type ResourceProvisionerCloser 

type ResourceProvisionerCloser interface {
	Close() error
}

ResourceProvisionerCloser is an interface that provisioners that can close connections that aren't needed anymore must implement.

type ResourceProvisionerFactory 

type ResourceProvisionerFactory func() (ResourceProvisioner, error)

ResourceProvisionerFactory is a function type that creates a new instance of a resource provisioner.

type ResourceState 

type ResourceState struct {
	// This is filled in and managed by Terraform, and is the resource
	// type itself such as "mycloud_instance". If a resource provider sets
	// this value, it won't be persisted.
	Type string `json:"type"`

	// Dependencies are a list of things that this resource relies on
	// existing to remain intact. For example: an AWS instance might
	// depend on a subnet (which itself might depend on a VPC, and so
	// on).
	//
	// Terraform uses this information to build valid destruction
	// orders and to warn the user if they're destroying a resource that
	// another resource depends on.
	//
	// Things can be put into this list that may not be managed by
	// Terraform. If Terraform doesn't find a matching ID in the
	// overall state, then it assumes it isn't managed and doesn't
	// worry about it.
	Dependencies []string `json:"depends_on"`

	// Primary is the current active instance for this resource.
	// It can be replaced but only after a successful creation.
	// This is the instances on which providers will act.
	Primary *InstanceState `json:"primary"`

	// Deposed is used in the mechanics of CreateBeforeDestroy: the existing
	// Primary is Deposed to get it out of the way for the replacement Primary to
	// be created by Apply. If the replacement Primary creates successfully, the
	// Deposed instance is cleaned up.
	//
	// If there were problems creating the replacement Primary, the Deposed
	// instance and the (now tainted) replacement Primary will be swapped so the
	// tainted replacement will be cleaned up instead.
	//
	// An instance will remain in the Deposed list until it is successfully
	// destroyed and purged.
	Deposed []*InstanceState `json:"deposed"`

	// Provider is used when a resource is connected to a provider with an alias.
	// If this string is empty, the resource is connected to the default provider,
	// e.g. "aws_instance" goes with the "aws" provider.
	// If the resource block contained a "provider" key, that value will be set here.
	Provider string `json:"provider"`
	// contains filtered or unexported fields
}

ResourceState holds the state of a resource that is used so that a provider can find and manage an existing resource as well as for storing attributes that are used to populate variables of child resources.

Attributes has attributes about the created resource that are queryable in interpolation: "${type.id.attr}"

Extra is just extra data that a provider can return that we store for later, but is not exposed in any way to the user.

func (*ResourceState) Equal 

func (s *ResourceState) Equal(other *ResourceState) bool

Equal tests whether two ResourceStates are equal.

func (*ResourceState) Lock 

func (s *ResourceState) Lock()

func (*ResourceState) ProviderAddr 

func (s *ResourceState) ProviderAddr() (addrs.AbsProviderConfig, error)

ProviderAddr returns the provider address for the receiver, by parsing the string representation saved in state. An error can be returned if the value in state is corrupt.

func (*ResourceState) String 

func (s *ResourceState) String() string

func (*ResourceState) Taint 

func (s *ResourceState) Taint()

Taint marks a resource as tainted.

func (*ResourceState) Unlock 

func (s *ResourceState) Unlock()

func (*ResourceState) Untaint 

func (s *ResourceState) Untaint()

Untaint unmarks a resource as tainted.

type ResourceStateKey 

type ResourceStateKey struct {
	Name  string
	Type  string
	Mode  ResourceMode
	Index int
}

ResourceStateKey is a structured representation of the key used for the ModuleState.Resources mapping

func ParseResourceStateKey 

func ParseResourceStateKey(k string) (*ResourceStateKey, error)

ParseResourceStateKey accepts a key in the format used by ModuleState.Resources and returns a resource name and resource index. In the state, a resource has the format "type.name.index" or "type.name". In the latter case, the index is returned as -1.

func (*ResourceStateKey) Equal 

func (rsk *ResourceStateKey) Equal(other *ResourceStateKey) bool

Equal determines whether two ResourceStateKeys are the same

func (*ResourceStateKey) String 

func (rsk *ResourceStateKey) String() string

type ResourceType 

type ResourceType struct {
	Name       string // Name of the resource, example "instance" (no provider prefix)
	Importable bool   // Whether this resource supports importing

	// SchemaAvailable is set if the provider supports the ProviderSchema,
	// ResourceTypeSchema and DataSourceSchema methods. Although it is
	// included on each resource type, it's actually a provider-wide setting
	// that's smuggled here only because that avoids a breaking change to
	// the plugin protocol.
	SchemaAvailable bool
}

ResourceType is a type of resource that a resource provider can manage.

type RootTransformer 

type RootTransformer struct{}

RootTransformer is a GraphTransformer that adds a root to the graph.

func (*RootTransformer) Transform 

func (t *RootTransformer) Transform(g *Graph) error

type RootVariableTransformer 

type RootVariableTransformer struct {
	Config *configs.Config
}

RootVariableTransformer is a GraphTransformer that adds all the root variables to the graph.

Root variables are currently no-ops but they must be added to the graph since downstream things that depend on them must be able to reach them.

func (*RootVariableTransformer) Transform 

func (t *RootVariableTransformer) Transform(g *Graph) error

type Schemas 

type Schemas struct {
	Providers    map[string]*ProviderSchema
	Provisioners map[string]*configschema.Block
}

Schemas is a container for various kinds of schema that Terraform needs during processing.

func LoadSchemas 

func LoadSchemas(config *configs.Config, state *states.State, components contextComponentFactory) (*Schemas, error)

LoadSchemas searches the given configuration, state and plan (any of which may be nil) for constructs that have an associated schema, requests the necessary schemas from the given component factory (which must _not_ be nil), and returns a single object representing all of the necessary schemas.

If an error is returned, it may be a wrapped tfdiags.Diagnostics describing errors across multiple separate objects. Errors here will usually indicate either misbehavior on the part of one of the providers or of the provider protocol itself. When returned with errors, the returned schemas object is still valid but may be incomplete.

func (*Schemas) ProviderConfig 

func (ss *Schemas) ProviderConfig(typeName string) *configschema.Block

ProviderConfig returns the schema for the provider configuration of the given provider type, or nil if no such schema is available.

func (*Schemas) ProviderSchema 

func (ss *Schemas) ProviderSchema(typeName string) *ProviderSchema

ProviderSchema returns the entire ProviderSchema object that was produced by the plugin for the given provider, or nil if no such schema is available.

It's usually better to go use the more precise methods offered by type Schemas to handle this detail automatically.

func (*Schemas) ProvisionerConfig 

func (ss *Schemas) ProvisionerConfig(name string) *configschema.Block

ProvisionerConfig returns the schema for the configuration of a given provisioner, or nil of no such schema is available.

func (*Schemas) ResourceTypeConfig 

func (ss *Schemas) ResourceTypeConfig(providerType string, resourceMode addrs.ResourceMode, resourceType string) (block *configschema.Block, schemaVersion uint64)

ResourceTypeConfig returns the schema for the configuration of a given resource type belonging to a given provider type, or nil of no such schema is available.

In many cases the provider type is inferrable from the resource type name, but this is not always true because users can override the provider for a resource using the "provider" meta-argument. Therefore it's important to always pass the correct provider name, even though it many cases it feels redundant.

type Semaphore 

type Semaphore chan struct{}

Semaphore is a wrapper around a channel to provide utility methods to clarify that we are treating the channel as a semaphore

func NewSemaphore 

func NewSemaphore(n int) Semaphore

NewSemaphore creates a semaphore that allows up to a given limit of simultaneous acquisitions

func (Semaphore) Acquire 

func (s Semaphore) Acquire()

Acquire is used to acquire an available slot. Blocks until available.

func (Semaphore) Release 

func (s Semaphore) Release()

Release is used to return a slot. Acquire must be called as a pre-condition.

func (Semaphore) TryAcquire 

func (s Semaphore) TryAcquire() bool

TryAcquire is used to do a non-blocking acquire. Returns a bool indicating success

type State 

type State struct {
	// Version is the state file protocol version.
	Version int `json:"version"`

	// TFVersion is the version of Terraform that wrote this state.
	TFVersion string `json:"terraform_version,omitempty"`

	// Serial is incremented on any operation that modifies
	// the State file. It is used to detect potentially conflicting
	// updates.
	Serial int64 `json:"serial"`

	// Lineage is set when a new, blank state is created and then
	// never updated. This allows us to determine whether the serials
	// of two states can be meaningfully compared.
	// Apart from the guarantee that collisions between two lineages
	// are very unlikely, this value is opaque and external callers
	// should only compare lineage strings byte-for-byte for equality.
	Lineage string `json:"lineage"`

	// Remote is used to track the metadata required to
	// pull and push state files from a remote storage endpoint.
	Remote *RemoteState `json:"remote,omitempty"`

	// Backend tracks the configuration for the backend in use with
	// this state. This is used to track any changes in the backend
	// configuration.
	Backend *BackendState `json:"backend,omitempty"`

	// Modules contains all the modules in a breadth-first order
	Modules []*ModuleState `json:"modules"`
	// contains filtered or unexported fields
}

State keeps track of a snapshot state-of-the-world that Terraform can use to keep track of what real world resources it is actually managing.

func NewState 

func NewState() *State

NewState is used to initialize a blank state

func ReadState 

func ReadState(src io.Reader) (*State, error)

ReadState reads a state structure out of a reader in the format that was written by WriteState.

func ReadStateV2 

func ReadStateV2(jsonBytes []byte) (*State, error)

func ReadStateV3 

func ReadStateV3(jsonBytes []byte) (*State, error)

func (*State) AddModule 

func (s *State) AddModule(path addrs.ModuleInstance) *ModuleState

AddModule adds the module with the given path to the state.

This should be the preferred method to add module states since it allows us to optimize lookups later as well as control sorting.

func (*State) AddModuleState 

func (s *State) AddModuleState(mod *ModuleState)

AddModuleState insert this module state and override any existing ModuleState

func (*State) Children 

func (s *State) Children(path []string) []*ModuleState

Children returns the ModuleStates that are direct children of the given path. If the path is "root", for example, then children returned might be "root.child", but not "root.child.grandchild".

func (*State) CompareAges 

func (s *State) CompareAges(other *State) (StateAgeComparison, error)

CompareAges compares one state with another for which is "older".

This is a simple check using the state's serial, and is thus only as reliable as the serial itself. In the normal case, only one state exists for a given combination of lineage/serial, but Terraform does not guarantee this and so the result of this method should be used with care.

Returns an integer that is negative if the receiver is older than the argument, positive if the converse, and zero if they are equal. An error is returned if the two states are not of the same lineage, in which case the integer returned has no meaning.

func (*State) DeepCopy 

func (s *State) DeepCopy() *State

DeepCopy performs a deep copy of the state structure and returns a new structure.

func (*State) Empty 

func (s *State) Empty() bool

Empty returns true if the state is empty.

func (*State) EnsureHasLineage 

func (s *State) EnsureHasLineage()

func (*State) Equal 

func (s *State) Equal(other *State) bool

Equal tests if one state is equal to another.

func (*State) FromFutureTerraform 

func (s *State) FromFutureTerraform() bool

FromFutureTerraform checks if this state was written by a Terraform version from the future.

func (*State) HasResources 

func (s *State) HasResources() bool

HasResources returns true if the state contains any resources.

This is similar to !s.Empty, but returns true also in the case where the state has modules but all of them are devoid of resources.

func (*State) Init 

func (s *State) Init()

func (*State) IsRemote 

func (s *State) IsRemote() bool

IsRemote returns true if State represents a state that exists and is remote.

func (*State) Lock 

func (s *State) Lock()

func (*State) MarshalEqual 

func (s *State) MarshalEqual(other *State) bool

MarshalEqual is similar to Equal but provides a stronger definition of "equal", where two states are equal if and only if their serialized form is byte-for-byte identical.

This is primarily useful for callers that are trying to save snapshots of state to persistent storage, allowing them to detect when a new snapshot must be taken.

Note that the serial number and lineage are included in the serialized form, so it's the caller's responsibility to properly manage these attributes so that this method is only called on two states that have the same serial and lineage, unless detecting such differences is desired.

func (*State) ModuleByPath 

func (s *State) ModuleByPath(path addrs.ModuleInstance) *ModuleState

ModuleByPath is used to lookup the module state for the given path. This should be the preferred lookup mechanism as it allows for future lookup optimizations.

func (*State) Remove 

func (s *State) Remove(addr ...string) error

Remove removes the item in the state at the given address, returning any errors that may have occurred.

If the address references a module state or resource, it will delete all children as well. To check what will be deleted, use a StateFilter first.

func (*State) RootModule 

func (s *State) RootModule() *ModuleState

RootModule returns the ModuleState for the root module

func (*State) SameLineage 

func (s *State) SameLineage(other *State) bool

SameLineage returns true only if the state given in argument belongs to the same "lineage" of states as the receiver.

func (*State) String 

func (s *State) String() string

func (*State) Unlock 

func (s *State) Unlock()

func (*State) Validate 

func (s *State) Validate() error

Validate validates the integrity of this state file.

Certain properties of the statefile are expected by Terraform in order to behave properly. The core of Terraform will assume that once it receives a State structure that it has been validated. This validation check should be called to ensure that.

If this returns an error, then the user should be notified. The error response will include detailed information on the nature of the error.

type StateAgeComparison 

type StateAgeComparison int
const (
	StateAgeEqual         StateAgeComparison = 0
	StateAgeReceiverNewer StateAgeComparison = 1
	StateAgeReceiverOlder StateAgeComparison = -1
)

type StateFilter 

type StateFilter struct {
	State *State
}

StateFilter is responsible for filtering and searching a state.

This is a separate struct from State rather than a method on State because StateFilter might create sidecar data structures to optimize filtering on the state.

If you change the State, the filter created is invalid and either Reset should be called or a new one should be allocated. StateFilter will not watch State for changes and do this for you. If you filter after changing the State without calling Reset, the behavior is not defined.

func (*StateFilter) Filter 

func (f *StateFilter) Filter(fs ...string) ([]*StateFilterResult, error)

Filter takes the addresses specified by fs and finds all the matches. The values of fs are resource addressing syntax that can be parsed by ParseResourceAddress.

type StateFilterResult 

type StateFilterResult struct {
	// Module path of the result
	Path []string

	// Address is the address that can be used to reference this exact result.
	Address string

	// Parent, if non-nil, is a parent of this result. For instances, the
	// parent would be a resource. For resources, the parent would be
	// a module. For modules, this is currently nil.
	Parent *StateFilterResult

	// Value is the actual value. This must be type switched on. It can be
	// any data structures that `State` can hold: `ModuleState`,
	// `ResourceState`, `InstanceState`.
	Value interface{}
}

StateFilterResult is a single result from a filter operation. Filter can match multiple things within a state (module, resource, instance, etc.) and this unifies that.

func (*StateFilterResult) String 

func (r *StateFilterResult) String() string

type StateFilterResultSlice 

type StateFilterResultSlice []*StateFilterResult

StateFilterResultSlice is a slice of results that implements sort.Interface. The sorting goal is what is most appealing to human output.

func (StateFilterResultSlice) Len 

func (s StateFilterResultSlice) Len() int

func (StateFilterResultSlice) Less 

func (s StateFilterResultSlice) Less(i, j int) bool

func (StateFilterResultSlice) Swap 

func (s StateFilterResultSlice) Swap(i, j int)

type StateTransformer 

type StateTransformer struct {
	// ConcreteCurrent and ConcreteDeposed are used to specialize the abstract
	// resource instance nodes that this transformer will create.
	//
	// If either of these is nil, the objects of that type will be skipped and
	// not added to the graph at all. It doesn't make sense to use this
	// transformer without setting at least one of these, since that would
	// skip everything and thus be a no-op.
	ConcreteCurrent ConcreteResourceInstanceNodeFunc
	ConcreteDeposed ConcreteResourceInstanceDeposedNodeFunc

	State *states.State
}

StateTransformer is a GraphTransformer that adds the elements of the state to the graph.

This transform is used for example by the DestroyPlanGraphBuilder to ensure that only resources that are in the state are represented in the graph.

func (*StateTransformer) Transform 

func (t *StateTransformer) Transform(g *Graph) error

type TargetsTransformer 

type TargetsTransformer struct {
	// List of targeted resource names specified by the user
	Targets []addrs.Targetable

	// If set, the index portions of resource addresses will be ignored
	// for comparison. This is used when transforming a graph where
	// counted resources have not yet been expanded, since otherwise
	// the unexpanded nodes (which never have indices) would not match.
	IgnoreIndices bool

	// Set to true when we're in a `terraform destroy` or a
	// `terraform plan -destroy`
	Destroy bool
}

TargetsTransformer is a GraphTransformer that, when the user specifies a list of resources to target, limits the graph to only those resources and their dependencies.

func (*TargetsTransformer) Transform 

func (t *TargetsTransformer) Transform(g *Graph) error

type TransitiveReductionTransformer 

type TransitiveReductionTransformer struct{}

TransitiveReductionTransformer is a GraphTransformer that performs finds the transitive reduction of the graph. For a definition of transitive reduction, see Wikipedia.

func (*TransitiveReductionTransformer) Transform 

func (t *TransitiveReductionTransformer) Transform(g *Graph) error

type UIInput 

type UIInput interface {
	Input(context.Context, *InputOpts) (string, error)
}

UIInput is the interface that must be implemented to ask for input from this user. This should forward the request to wherever the user inputs things to ask for values.

type UIOutput 

type UIOutput interface {
	Output(string)
}

UIOutput is the interface that must be implemented to output data to the end user.

type ValueSourceType 

type ValueSourceType rune

ValueSourceType describes what broad category of source location provided a particular value. 

const (
	// ValueFromUnknown is the zero value of ValueSourceType and is not valid.
	ValueFromUnknown ValueSourceType = 0

	// ValueFromConfig indicates that a value came from a .tf or .tf.json file,
	// e.g. the default value defined for a variable.
	ValueFromConfig ValueSourceType = 'C'

	// ValueFromAutoFile indicates that a value came from a "values file", like
	// a .tfvars file, that was implicitly loaded by naming convention.
	ValueFromAutoFile ValueSourceType = 'F'

	// ValueFromNamedFile indicates that a value came from a named "values file",
	// like a .tfvars file, that was passed explicitly on the command line (e.g.
	// -var-file=foo.tfvars).
	ValueFromNamedFile ValueSourceType = 'N'

	// ValueFromCLIArg indicates that the value was provided directly in
	// a CLI argument. The name of this argument is not recorded and so it must
	// be inferred from context.
	ValueFromCLIArg ValueSourceType = 'A'

	// ValueFromEnvVar indicates that the value was provided via an environment
	// variable. The name of the variable is not recorded and so it must be
	// inferred from context.
	ValueFromEnvVar ValueSourceType = 'E'

	// ValueFromInput indicates that the value was provided at an interactive
	// input prompt.
	ValueFromInput ValueSourceType = 'I'

	// ValueFromPlan indicates that the value was retrieved from a stored plan.
	ValueFromPlan ValueSourceType = 'P'

	// ValueFromCaller indicates that the value was explicitly overridden by
	// a caller to Context.SetVariable after the context was constructed.
	ValueFromCaller ValueSourceType = 'S'
)

func (ValueSourceType) GoString 

func (v ValueSourceType) GoString() string

func (ValueSourceType) String 

func (i ValueSourceType) String() string

type VertexTransformer 

type VertexTransformer struct {
	Transforms []GraphVertexTransformer
}

VertexTransformer is a GraphTransformer that transforms vertices using the GraphVertexTransformers. The Transforms are run in sequential order. If a transform replaces a vertex then the next transform will see the new vertex.

func (*VertexTransformer) Transform 

func (t *VertexTransformer) Transform(g *Graph) error

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