terraform

package
v0.10.0-beta1 Latest Latest
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 Go to latest Published: Jun 22, 2017 License: MPL-2.0 Imports: 46 Imported by: 0

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Index

Constants

View Source 
const RootModuleName = "root"

RootModuleName is the name given to the root module implicitly.

View Source 
const (
	// StateVersion is the current version for our state file
	StateVersion = 3
)
View Source 
const UserAgent = "Terraform %s (%s)"

The standard Terraform User-Agent format

View Source 
const (
	// VarEnvPrefix is the prefix of variables that are read from
	// the environment to set variables here.
	VarEnvPrefix = "TF_VAR_"
)
View Source 
const Version = "0.10.0"

The main version number that is being run at the moment.

View Source 
const VersionHeader = "Terraform-Version"

VersionHeader is the header name used to send the current terraform version in http requests.

Variables

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

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

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

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.

View Source 
var RootModulePath = []string{RootModuleName}

RootModulePath is the path for the root module.

View Source 
var SemVersion = version.Must(version.NewVersion(Version))

SemVersion is an instance of version.Version. This has the secondary benefit of verifying during tests and init time that our version is a proper semantic version, which should always be the case.

View Source 
var VersionPrerelease = "beta1"

A pre-release marker for the version. If this is "" (empty string) then it means that it is a final release. Otherwise, this is a pre-release such as "dev" (in development), "beta", "rc1", etc.

Functions

func CloseDebugInfo added in v0.7.9 

func CloseDebugInfo() error

CloseDebugInfo is the exported interface to Close the debug info handler. The debug handler needs to be closed before program exit, so we export this function to be deferred in the appropriate entrypoint for our executable.

func Eval added in v0.4.0 

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 added in v0.4.0 

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 ModuleTreeDependencies added in v0.10.0 

func ModuleTreeDependencies(root *module.Tree, state *State) *moduledeps.Module

ModuleTreeDependencies returns the dependencies of the tree of modules described by the given configuration tree 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.

This function will panic if any invalid version constraint strings are present in the configuration. This is guaranteed not to happen for any configuration that has passed a call to Config.Validate().

func ParseResourceIndex added in v0.5.0 

func ParseResourceIndex(s string) (int, error)

func ParseResourcePath added in v0.5.0 

func ParseResourcePath(s string) []string

func PathCacheKey added in v0.4.0 

func PathCacheKey(path []string) string

PathCacheKey returns a cache key for a module path.

TODO: test

func ProviderHasDataSource added in v0.7.0 

func ProviderHasDataSource(p ResourceProvider, n string) bool

func ProviderHasResource added in v0.7.0 

func ProviderHasResource(p ResourceProvider, n string) bool

func ReadStateV1 added in v0.3.0 

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

func ReferenceFromInterpolatedVar added in v0.7.8 

func ReferenceFromInterpolatedVar(v config.InterpolatedVariable) []string

ReferenceFromInterpolatedVar returns the reference from this variable, or an empty string if there is no reference.

func ReferenceModulePath added in v0.8.0 

func ReferenceModulePath(p []string) []string

Returns the reference name for a module path. The path "foo" would return "module.foo". If this is a deeply nested module, it will be every parent as well. For example: ["foo", "bar"] would return both "module.foo" and "module.foo.module.bar"

func ReferencesFromConfig added in v0.7.8 

func ReferencesFromConfig(c *config.RawConfig) []string

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

func SetDebugInfo added in v0.7.9 

func SetDebugInfo(path string) error

SetDebugInfo initializes the debug handler with a backing file in the provided directory. This must be called before any other terraform package operations or not at all. Once his is called, CloseDebugInfo should be called before program exit.

func TestStateFile added in v0.9.0 

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

TestStateFile writes the given state to the path.

func UserAgentString added in v0.9.7 

func UserAgentString() string

Generate a UserAgent string

func Variables added in v0.7.1 

func Variables(
	m *module.Tree,
	override map[string]interface{}) (map[string]interface{}, error)

Variables returns the fully loaded set of variables to use with ContextOpts and NewContext, loading any additional variables from the environment or any other sources.

The given module tree doesn't need to be loaded.

func VersionString added in v0.7.0 

func VersionString() string

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 added in v0.7.8 

type ApplyGraphBuilder struct {
	// Module is the root module for the graph to build.
	Module *module.Tree

	// Diff is the diff to apply.
	Diff *Diff

	// State is the current state
	State *State

	// Providers is the list of providers supported.
	Providers []string

	// Provisioners is the list of provisioners supported.
	Provisioners []string

	// 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 []string

	// 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 added in v0.7.8 

func (b *ApplyGraphBuilder) Build(path []string) (*Graph, error)

See GraphBuilder

func (*ApplyGraphBuilder) Steps added in v0.7.8 

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

See GraphBuilder

type AttachProviderConfigTransformer added in v0.7.8 

type AttachProviderConfigTransformer struct {
	Module *module.Tree // Module is the root module for the config
}

AttachProviderConfigTransformer goes through the graph and attaches provider configuration structures to nodes that implement the interfaces above.

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

func (*AttachProviderConfigTransformer) Transform added in v0.7.8 

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

type AttachResourceConfigTransformer added in v0.7.8 

type AttachResourceConfigTransformer struct {
	Module *module.Tree // Module is the root module for the config
}

AttachResourceConfigTransformer goes through the graph and attaches resource configuration structures to nodes that implement the interfaces above.

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

func (*AttachResourceConfigTransformer) Transform added in v0.7.8 

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

type AttachStateTransformer added in v0.7.8 

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

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

func (*AttachStateTransformer) Transform added in v0.7.8 

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

type BackendState added in v0.9.0 

type BackendState struct {
	Type   string                 `json:"type"`   // Backend type
	Config map[string]interface{} `json:"config"` // Backend raw config

	// Hash is the hash code to uniquely identify the original source
	// configuration. We use this to detect when there is a change in
	// configuration even when "type" isn't changed.
	Hash uint64 `json:"hash"`
}

BackendState stores the configuration to connect to a remote backend.

func (*BackendState) Empty added in v0.9.0 

func (s *BackendState) Empty() bool

Empty returns true if BackendState has no state.

func (*BackendState) Rehash added in v0.9.3 

func (s *BackendState) Rehash() uint64

Rehash returns a unique content hash for this backend's configuration as a uint64 value. The Hash stored in the backend state needs to match the config itself, but we need to compare the backend config after it has been combined with all options. This function must match the implementation used by config.Backend.

type BasicGraphBuilder added in v0.4.0 

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 added in v0.4.0 

func (b *BasicGraphBuilder) Build(path []string) (*Graph, error)

type BuiltinEvalContext added in v0.4.0 

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 []string

	// Interpolater setting below affect the interpolation of variables.
	//
	// The InterpolaterVars are the exact value for ${var.foo} values.
	// The map is shared between all contexts and is a mapping of
	// PATH to KEY to VALUE. Because it is shared by all contexts as well
	// as the Interpolater itself, it is protected by InterpolaterVarLock
	// which must be locked during any access to the map.
	Interpolater        *Interpolater
	InterpolaterVars    map[string]map[string]interface{}
	InterpolaterVarLock *sync.Mutex

	Components          contextComponentFactory
	Hooks               []Hook
	InputValue          UIInput
	ProviderCache       map[string]ResourceProvider
	ProviderConfigCache map[string]*ResourceConfig
	ProviderInputConfig map[string]map[string]interface{}
	ProviderLock        *sync.Mutex
	ProvisionerCache    map[string]ResourceProvisioner
	ProvisionerLock     *sync.Mutex
	DiffValue           *Diff
	DiffLock            *sync.RWMutex
	StateValue          *State
	StateLock           *sync.RWMutex
	// contains filtered or unexported fields
}

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

func (*BuiltinEvalContext) CloseProvider added in v0.6.0 

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

func (*BuiltinEvalContext) CloseProvisioner added in v0.6.0 

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

func (*BuiltinEvalContext) ConfigureProvider added in v0.4.0 

func (ctx *BuiltinEvalContext) ConfigureProvider(
	n string, cfg *ResourceConfig) error

func (*BuiltinEvalContext) Diff added in v0.4.0 

func (ctx *BuiltinEvalContext) Diff() (*Diff, *sync.RWMutex)

func (*BuiltinEvalContext) Hook added in v0.4.0 

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

func (*BuiltinEvalContext) InitProvider added in v0.4.0 

func (ctx *BuiltinEvalContext) InitProvider(n string) (ResourceProvider, error)

func (*BuiltinEvalContext) InitProvisioner added in v0.4.0 

func (ctx *BuiltinEvalContext) InitProvisioner(
	n string) (ResourceProvisioner, error)

func (*BuiltinEvalContext) Input added in v0.4.0 

func (ctx *BuiltinEvalContext) Input() UIInput

func (*BuiltinEvalContext) Interpolate added in v0.4.0 

func (ctx *BuiltinEvalContext) Interpolate(
	cfg *config.RawConfig, r *Resource) (*ResourceConfig, error)

func (*BuiltinEvalContext) ParentProviderConfig added in v0.4.0 

func (ctx *BuiltinEvalContext) ParentProviderConfig(n string) *ResourceConfig

func (*BuiltinEvalContext) Path added in v0.4.0 

func (ctx *BuiltinEvalContext) Path() []string

func (*BuiltinEvalContext) Provider added in v0.4.0 

func (ctx *BuiltinEvalContext) Provider(n string) ResourceProvider

func (*BuiltinEvalContext) ProviderInput added in v0.4.0 

func (ctx *BuiltinEvalContext) ProviderInput(n string) map[string]interface{}

func (*BuiltinEvalContext) Provisioner added in v0.4.0 

func (ctx *BuiltinEvalContext) Provisioner(n string) ResourceProvisioner

func (*BuiltinEvalContext) SetProviderConfig added in v0.4.1 

func (ctx *BuiltinEvalContext) SetProviderConfig(
	n string, cfg *ResourceConfig) error

func (*BuiltinEvalContext) SetProviderInput added in v0.4.0 

func (ctx *BuiltinEvalContext) SetProviderInput(n string, c map[string]interface{})

func (*BuiltinEvalContext) SetVariables added in v0.4.0 

func (ctx *BuiltinEvalContext) SetVariables(n string, vs map[string]interface{})

func (*BuiltinEvalContext) State added in v0.4.0 

func (ctx *BuiltinEvalContext) State() (*State, *sync.RWMutex)

func (*BuiltinEvalContext) Stopped added in v0.9.0 

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

type CBDEdgeTransformer added in v0.7.8 

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

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.

func (*CBDEdgeTransformer) Transform added in v0.7.8 

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

type CallbackUIOutput added in v0.3.0 

type CallbackUIOutput struct {
	OutputFn func(string)
}

func (*CallbackUIOutput) Output added in v0.4.0 

func (o *CallbackUIOutput) Output(v string)

type CloseProviderTransformer added in v0.6.0 

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 added in v0.6.0 

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

type CloseProvisionerTransformer added in v0.6.0 

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 added in v0.6.0 

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

type ConcreteProviderNodeFunc added in v0.8.0 

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 ConcreteResourceNodeFunc added in v0.7.8 

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 added in v0.4.0 

type ConfigTransformer struct {
	Concrete ConcreteResourceNodeFunc

	// Module is the module to add resources from.
	Module *module.Tree

	// 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       config.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 added in v0.4.0 

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. See the documentation for that.

Extra functions on Context can be found in context_*.go files.

func NewContext 

func NewContext(opts *ContextOpts) (*Context, error)

NewContext creates a new Context structure.

Once a Context is creator, the pointer values within ContextOpts should not be mutated in any way, since the pointers are copied, not the values themselves.

func (*Context) Apply 

func (c *Context) Apply() (*State, error)

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) Graph 

func (c *Context) Graph(typ GraphType, opts *ContextGraphOpts) (*Graph, error)

Graph returns the graph used for the given operation type.

The most extensive or complex graph type is GraphTypePlan.

func (*Context) Import added in v0.7.0 

func (c *Context) Import(opts *ImportOpts) (*State, error)

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 added in v0.3.0 

func (c *Context) Input(mode InputMode) error

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) Interpolater added in v0.8.0 

func (c *Context) Interpolater() *Interpolater

Interpolater returns an Interpolater built on a copy of the state that can be used to test interpolation values.

func (*Context) Module added in v0.4.0 

func (c *Context) Module() *module.Tree

Module returns the module tree associated with this context.

func (*Context) Plan 

func (c *Context) Plan() (*Plan, error)

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() (*State, error)

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) SetVariable added in v0.4.0 

func (c *Context) SetVariable(k string, v interface{})

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

func (*Context) ShadowError added in v0.7.8 

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 added in v0.9.0 

func (c *Context) State() *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() ([]string, []error)

Validate validates the configuration and returns any warnings or errors.

func (*Context) Variables added in v0.4.0 

func (c *Context) Variables() map[string]interface{}

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 added in v0.5.0 

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 added in v0.4.0 

type ContextGraphWalker struct {
	NullGraphWalker

	// Configurable values
	Context     *Context
	Operation   walkOperation
	StopContext context.Context

	// Outputs, do not set these. Do not read these while the graph
	// is being walked.
	ValidationWarnings []string
	ValidationErrors   []error
	// contains filtered or unexported fields
}

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

func (*ContextGraphWalker) EnterEvalTree added in v0.4.0 

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

func (*ContextGraphWalker) EnterPath added in v0.5.0 

func (w *ContextGraphWalker) EnterPath(path []string) EvalContext

func (*ContextGraphWalker) ExitEvalTree added in v0.4.0 

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

type ContextMeta added in v0.9.0 

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 {
	Meta               *ContextMeta
	Destroy            bool
	Diff               *Diff
	Hooks              []Hook
	Module             *module.Tree
	Parallelism        int
	State              *State
	StateFutureAllowed bool
	ProviderResolver   ResourceProviderResolver
	Provisioners       map[string]ResourceProvisionerFactory
	Shadow             bool
	Targets            []string
	Variables          map[string]interface{}

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

	UIInput UIInput
}

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

type CountBoundaryTransformer added in v0.7.8 

type CountBoundaryTransformer struct{}

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 added in v0.7.8 

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

type DataSource added in v0.7.0 

type DataSource struct {
	Name string
}

DataSource is a data source that a resource provider implements.

type DebugHook added in v0.7.9 

type DebugHook struct{}

DebugHook implements all methods of the terraform.Hook interface, and writes the arguments to a file in the archive. When a suitable format for the argument isn't available, the argument is encoded using json.Marshal. If the debug handler is nil, all DebugHook methods are noop, so no time is spent in marshaling the data structures.

func (*DebugHook) PostApply added in v0.7.9 

func (*DebugHook) PostApply(ii *InstanceInfo, is *InstanceState, err error) (HookAction, error)

func (*DebugHook) PostDiff added in v0.7.9 

func (*DebugHook) PostDiff(ii *InstanceInfo, id *InstanceDiff) (HookAction, error)

func (*DebugHook) PostImportState added in v0.7.9 

func (*DebugHook) PostImportState(ii *InstanceInfo, iss []*InstanceState) (HookAction, error)

func (*DebugHook) PostProvision added in v0.7.9 

func (*DebugHook) PostProvision(ii *InstanceInfo, s string, err error) (HookAction, error)

func (*DebugHook) PostProvisionResource added in v0.7.9 

func (*DebugHook) PostProvisionResource(ii *InstanceInfo, is *InstanceState) (HookAction, error)

func (*DebugHook) PostRefresh added in v0.7.9 

func (*DebugHook) PostRefresh(ii *InstanceInfo, is *InstanceState) (HookAction, error)

func (*DebugHook) PostStateUpdate added in v0.7.9 

func (*DebugHook) PostStateUpdate(*State) (HookAction, error)

skip logging this for now, since it could be huge

func (*DebugHook) PreApply added in v0.7.9 

func (*DebugHook) PreApply(ii *InstanceInfo, is *InstanceState, id *InstanceDiff) (HookAction, error)

func (*DebugHook) PreDiff added in v0.7.9 

func (*DebugHook) PreDiff(ii *InstanceInfo, is *InstanceState) (HookAction, error)

func (*DebugHook) PreImportState added in v0.7.9 

func (*DebugHook) PreImportState(ii *InstanceInfo, s string) (HookAction, error)

func (*DebugHook) PreProvision added in v0.7.9 

func (*DebugHook) PreProvision(ii *InstanceInfo, s string) (HookAction, error)

func (*DebugHook) PreProvisionResource added in v0.7.9 

func (*DebugHook) PreProvisionResource(ii *InstanceInfo, is *InstanceState) (HookAction, error)

func (*DebugHook) PreRefresh added in v0.7.9 

func (*DebugHook) PreRefresh(ii *InstanceInfo, is *InstanceState) (HookAction, error)

func (*DebugHook) ProvisionOutput added in v0.7.9 

func (*DebugHook) ProvisionOutput(ii *InstanceInfo, s1 string, s2 string)

type DeposedTransformer added in v0.4.0 

type DeposedTransformer struct {
	// State is the global state. We'll automatically find the correct
	// ModuleState based on the Graph.Path that is being transformed.
	State *State

	// View, if non-empty, is the ModuleState.View used around the state
	// to find deposed resources.
	View string
}

DeposedTransformer is a GraphTransformer that adds deposed resources to the graph.

func (*DeposedTransformer) Transform added in v0.4.0 

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

type DestroyEdge added in v0.7.8 

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 added in v0.7.8 

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

func (*DestroyEdge) Source added in v0.7.8 

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

func (*DestroyEdge) Target added in v0.7.8 

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

type DestroyEdgeTransformer added in v0.7.8 

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.
	Module *module.Tree
	State  *State
}

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 added in v0.7.8 

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

type DestroyPlanGraphBuilder added in v0.7.8 

type DestroyPlanGraphBuilder struct {
	// Module is the root module for the graph to build.
	Module *module.Tree

	// State is the current state
	State *State

	// Targets are resources to target
	Targets []string

	// 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 added in v0.7.8 

func (b *DestroyPlanGraphBuilder) Build(path []string) (*Graph, error)

See GraphBuilder

func (*DestroyPlanGraphBuilder) Steps added in v0.7.8 

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

See GraphBuilder

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 added in v0.3.0 

func (d *Diff) AddModule(path []string) *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 added in v0.7.8 

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 added in v0.7.8 

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 added in v0.3.0 

func (d *Diff) ModuleByPath(path []string) *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 added in v0.7.10 

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 added in v0.3.0 

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 added in v0.3.0 

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
)

type DiffTransformer added in v0.7.8 

type DiffTransformer struct {
	Concrete ConcreteResourceNodeFunc

	Diff   *Diff
	Module *module.Tree
	State  *State
}

DiffTransformer is a GraphTransformer that adds the elements of the diff to the graph.

This transform is used for example by the ApplyGraphBuilder to ensure that only resources that are being modified are represented in the graph.

Module and State is still required for the DiffTransformer for annotations since the Diff doesn't contain all the information required to build the complete graph (such as create-before-destroy information). The graph is built based on the diff first, though, ensuring that only resources that are being modified are present in the graph.

func (*DiffTransformer) Transform added in v0.7.8 

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

type DisableProviderTransformer added in v0.4.1 

type DisableProviderTransformer struct{}

DisableProviderTransformer "disables" any providers that are not actually used by anything. 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 (*DisableProviderTransformer) Transform added in v0.4.1 

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

type EphemeralState added in v0.3.0 

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 added in v0.7.0 

func (e *EphemeralState) DeepCopy() *EphemeralState

type EvalApply added in v0.4.0 

type EvalApply struct {
	Info      *InstanceInfo
	State     **InstanceState
	Diff      **InstanceDiff
	Provider  *ResourceProvider
	Output    **InstanceState
	CreateNew *bool
	Error     *error
}

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

func (*EvalApply) Eval added in v0.4.0 

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

TODO: test

type EvalApplyPost added in v0.4.0 

type EvalApplyPost struct {
	Info  *InstanceInfo
	State **InstanceState
	Error *error
}

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

func (*EvalApplyPost) Eval added in v0.4.0 

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

TODO: test

type EvalApplyPre added in v0.9.0 

type EvalApplyPre struct {
	Info  *InstanceInfo
	State **InstanceState
	Diff  **InstanceDiff
}

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

func (*EvalApplyPre) Eval added in v0.9.0 

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

TODO: test

type EvalApplyProvisioners added in v0.4.0 

type EvalApplyProvisioners struct {
	Info           *InstanceInfo
	State          **InstanceState
	Resource       *config.Resource
	InterpResource *Resource
	CreateNew      *bool
	Error          *error

	// When is the type of provisioner to run at this point
	When config.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 added in v0.4.0 

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

TODO: test

type EvalBuildProviderConfig added in v0.4.0 

type EvalBuildProviderConfig struct {
	Provider string
	Config   **ResourceConfig
	Output   **ResourceConfig
}

EvalBuildProviderConfig outputs a *ResourceConfig that is properly merged with parents and inputs on top of what is configured in the file.

func (*EvalBuildProviderConfig) Eval added in v0.4.0 

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

type EvalCheckPreventDestroy added in v0.5.0 

type EvalCheckPreventDestroy struct {
	Resource   *config.Resource
	ResourceId string
	Diff       **InstanceDiff
}

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 added in v0.5.0 

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

type EvalClearPrimaryState added in v0.4.0 

type EvalClearPrimaryState struct {
	Name string
}

EvalClearPrimaryState is an EvalNode implementation that clears the primary instance from a resource state.

func (*EvalClearPrimaryState) Eval added in v0.4.0 

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

type EvalCloseProvider added in v0.6.0 

type EvalCloseProvider struct {
	Name string
}

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

func (*EvalCloseProvider) Eval added in v0.6.0 

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

type EvalCloseProvisioner added in v0.6.0 

type EvalCloseProvisioner struct {
	Name string
}

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

func (*EvalCloseProvisioner) Eval added in v0.6.0 

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

type EvalCoerceMapVariable added in v0.7.0 

type EvalCoerceMapVariable struct {
	Variables  map[string]interface{}
	ModulePath []string
	ModuleTree *module.Tree
}

EvalCoerceMapVariable is an EvalNode implementation that recognizes a specific ambiguous HCL parsing situation and resolves it. In HCL parsing, a bare map literal is indistinguishable from a list of maps w/ one element.

We take all the same inputs as EvalTypeCheckVariable above, since we need both the target type and the proposed value in order to properly coerce.

func (*EvalCoerceMapVariable) Eval added in v0.7.0 

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

Eval implements the EvalNode interface. See EvalCoerceMapVariable for details.

type EvalCompareDiff added in v0.4.0 

type EvalCompareDiff struct {
	Info     *InstanceInfo
	One, Two **InstanceDiff
}

EvalCompareDiff is an EvalNode implementation that compares two diffs and errors if the diffs are not equal.

func (*EvalCompareDiff) Eval added in v0.4.0 

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

TODO: test

type EvalConfigProvider added in v0.4.0 

type EvalConfigProvider struct {
	Provider string
	Config   **ResourceConfig
}

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

func (*EvalConfigProvider) Eval added in v0.4.0 

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

type EvalContext added in v0.4.0 

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() []string

	// 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 name and
	// returns the implementation of the resource provider or an error.
	//
	// It is an error to initialize the same provider more than once.
	InitProvider(string) (ResourceProvider, error)

	// Provider gets the provider instance with the given name (already
	// initialized) or returns nil if the provider isn't initialized.
	Provider(string) ResourceProvider

	// CloseProvider closes provider connections that aren't needed anymore.
	CloseProvider(string) 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(string, *ResourceConfig) error
	SetProviderConfig(string, *ResourceConfig) error
	ParentProviderConfig(string) *ResourceConfig

	// ProviderInput and SetProviderInput are used to configure providers
	// from user input.
	ProviderInput(string) map[string]interface{}
	SetProviderInput(string, map[string]interface{})

	// 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) (ResourceProvisioner, error)

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

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

	// Interpolate takes the given raw configuration and completes
	// the interpolations, returning the processed ResourceConfig.
	//
	// The resource argument is optional. If given, it is the resource
	// that is currently being acted upon.
	Interpolate(*config.RawConfig, *Resource) (*ResourceConfig, error)

	// SetVariables sets the variables for the module within
	// this context with the name n. This function call is additive:
	// the second parameter is merged with any previous call.
	SetVariables(string, map[string]interface{})

	// Diff returns the global diff as well as the lock that should
	// be used to modify that diff.
	Diff() (*Diff, *sync.RWMutex)

	// State returns the global state as well as the lock that should
	// be used to modify that state.
	State() (*State, *sync.RWMutex)
}

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

type EvalCountCheckComputed added in v0.8.0 

type EvalCountCheckComputed struct {
	Resource *config.Resource
}

EvalCountCheckComputed is an EvalNode that checks if a resource count is computed and errors if so. This can possibly happen across a module boundary and we don't yet support this.

func (*EvalCountCheckComputed) Eval added in v0.8.0 

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

TODO: test

type EvalCountFixZeroOneBoundary added in v0.4.0 

type EvalCountFixZeroOneBoundary struct {
	Resource *config.Resource
}

EvalCountFixZeroOneBoundary 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.

func (*EvalCountFixZeroOneBoundary) Eval added in v0.4.0 

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

TODO: test

type EvalCountFixZeroOneBoundaryGlobal added in v0.7.8 

type EvalCountFixZeroOneBoundaryGlobal struct{}

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 added in v0.7.8 

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

TODO: test

type EvalDeleteOutput added in v0.5.0 

type EvalDeleteOutput struct {
	Name string
}

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

func (*EvalDeleteOutput) Eval added in v0.5.0 

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

TODO: test

type EvalDeposeState added in v0.4.0 

type EvalDeposeState struct {
	Name string
}

EvalDeposeState is an EvalNode implementation that takes the primary out of a state and makes it Deposed. This is done at the beginning of create-before-destroy calls so that the create can create while preserving the old state of the to-be-destroyed resource.

func (*EvalDeposeState) Eval added in v0.4.0 

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

TODO: test

type EvalDiff added in v0.4.0 

type EvalDiff struct {
	Name        string
	Info        *InstanceInfo
	Config      **ResourceConfig
	Provider    *ResourceProvider
	Diff        **InstanceDiff
	State       **InstanceState
	OutputDiff  **InstanceDiff
	OutputState **InstanceState

	// Resource is needed to fetch the ignore_changes list so we can
	// filter user-requested ignored attributes from the diff.
	Resource *config.Resource
}

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

func (*EvalDiff) Eval added in v0.4.0 

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

TODO: test

type EvalDiffDestroy added in v0.4.0 

type EvalDiffDestroy struct {
	Info   *InstanceInfo
	State  **InstanceState
	Output **InstanceDiff
}

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

func (*EvalDiffDestroy) Eval added in v0.4.0 

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

TODO: test

type EvalDiffDestroyModule added in v0.4.0 

type EvalDiffDestroyModule struct {
	Path []string
}

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

func (*EvalDiffDestroyModule) Eval added in v0.4.0 

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

TODO: test

type EvalEarlyExitError added in v0.4.0 

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 added in v0.4.0 

func (EvalEarlyExitError) Error() string

type EvalFilterDiff added in v0.4.0 

type EvalFilterDiff struct {
	// Input and output
	Diff   **InstanceDiff
	Output **InstanceDiff

	// Destroy, if true, will only include a destroy diff if it is set.
	Destroy bool
}

EvalFilterDiff is an EvalNode implementation that filters the diff according to some filter.

func (*EvalFilterDiff) Eval added in v0.4.0 

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

type EvalGetProvider added in v0.4.0 

type EvalGetProvider struct {
	Name   string
	Output *ResourceProvider
}

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

func (*EvalGetProvider) Eval added in v0.4.0 

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

type EvalGetProvisioner added in v0.4.0 

type EvalGetProvisioner struct {
	Name   string
	Output *ResourceProvisioner
}

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

func (*EvalGetProvisioner) Eval added in v0.4.0 

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

type EvalIf added in v0.4.0 

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

EvalIf is an EvalNode that is a conditional.

func (*EvalIf) Eval added in v0.4.0 

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

TODO: test

type EvalImportState added in v0.7.0 

type EvalImportState struct {
	Provider *ResourceProvider
	Info     *InstanceInfo
	Id       string
	Output   *[]*InstanceState
}

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 added in v0.7.0 

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

TODO: test

type EvalImportStateVerify added in v0.7.0 

type EvalImportStateVerify struct {
	Info  *InstanceInfo
	Id    string
	State **InstanceState
}

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

func (*EvalImportStateVerify) Eval added in v0.7.0 

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

TODO: test

type EvalInitProvider added in v0.4.0 

type EvalInitProvider struct {
	Name string
}

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 added in v0.4.0 

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

type EvalInitProvisioner added in v0.4.0 

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 added in v0.4.0 

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

type EvalInputProvider added in v0.4.0 

type EvalInputProvider struct {
	Name     string
	Provider *ResourceProvider
	Config   **ResourceConfig
}

EvalInputProvider is an EvalNode implementation that asks for input for the given provider configurations.

func (*EvalInputProvider) Eval added in v0.4.0 

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

type EvalInstanceInfo added in v0.4.0 

type EvalInstanceInfo struct {
	Info *InstanceInfo
}

EvalInstanceInfo is an EvalNode implementation that fills in the InstanceInfo as much as it can.

func (*EvalInstanceInfo) Eval added in v0.4.0 

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

TODO: test

type EvalInterpolate added in v0.4.0 

type EvalInterpolate struct {
	Config   *config.RawConfig
	Resource *Resource
	Output   **ResourceConfig
}

EvalInterpolate is an EvalNode implementation that takes a raw configuration and interpolates it.

func (*EvalInterpolate) Eval added in v0.4.0 

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

type EvalNode added in v0.4.0 

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 added in v0.6.0 

func CloseProviderEvalTree(n string) EvalNode

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

func EvalFilter added in v0.4.0 

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 added in v0.4.0 

func ProviderEvalTree(n string, config *config.RawConfig) EvalNode

ProviderEvalTree returns the evaluation tree for initializing and configuring providers.

type EvalNodeFilterFunc added in v0.4.0 

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 added in v0.4.0 

func EvalNodeFilterOp(op walkOperation) EvalNodeFilterFunc

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

type EvalNodeFilterable added in v0.4.0 

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 added in v0.4.0 

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 added in v0.4.0 

type EvalNoop struct{}

EvalNoop is an EvalNode that does nothing.

func (EvalNoop) Eval added in v0.4.0 

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

type EvalOpFilter added in v0.4.0 

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 added in v0.4.0 

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

TODO: test

func (*EvalOpFilter) IncludeInOp added in v0.4.0 

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

EvalNodeOpFilterable impl.

type EvalReadDataApply added in v0.7.0 

type EvalReadDataApply struct {
	Provider *ResourceProvider
	Output   **InstanceState
	Diff     **InstanceDiff
	Info     *InstanceInfo
}

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

func (*EvalReadDataApply) Eval added in v0.7.0 

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

type EvalReadDataDiff added in v0.7.0 

type EvalReadDataDiff struct {
	Provider    *ResourceProvider
	Output      **InstanceDiff
	OutputState **InstanceState
	Config      **ResourceConfig
	Info        *InstanceInfo

	// Set Previous when re-evaluating diff during apply, to ensure that
	// the "Destroy" flag is preserved.
	Previous **InstanceDiff
}

EvalReadDataDiff is an EvalNode implementation that executes a data resource's ReadDataDiff method to discover what attributes it exports.

func (*EvalReadDataDiff) Eval added in v0.7.0 

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

type EvalReadDiff added in v0.4.0 

type EvalReadDiff struct {
	Name string
	Diff **InstanceDiff
}

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

func (*EvalReadDiff) Eval added in v0.4.0 

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

type EvalReadState added in v0.4.0 

type EvalReadState struct {
	Name   string
	Output **InstanceState
}

EvalReadState is an EvalNode implementation that reads the primary InstanceState for a specific resource out of the state.

func (*EvalReadState) Eval added in v0.4.0 

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

type EvalReadStateDeposed added in v0.4.0 

type EvalReadStateDeposed struct {
	Name   string
	Output **InstanceState
	// Index indicates which instance in the Deposed list to target, or -1 for
	// the last item.
	Index int
}

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

func (*EvalReadStateDeposed) Eval added in v0.4.0 

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

type EvalRefresh added in v0.4.0 

type EvalRefresh struct {
	Provider *ResourceProvider
	State    **InstanceState
	Info     *InstanceInfo
	Output   **InstanceState
}

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

func (*EvalRefresh) Eval added in v0.4.0 

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

TODO: test

type EvalRequireState added in v0.4.0 

type EvalRequireState struct {
	State **InstanceState
}

EvalRequireState is an EvalNode implementation that early exits if the state doesn't have an ID.

func (*EvalRequireState) Eval added in v0.4.0 

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

type EvalReturnError added in v0.4.0 

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 added in v0.4.0 

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

type EvalSequence added in v0.4.0 

type EvalSequence struct {
	Nodes []EvalNode
}

EvalSequence is an EvalNode that evaluates in sequence.

func (*EvalSequence) Eval added in v0.4.0 

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

func (*EvalSequence) Filter added in v0.4.0 

func (n *EvalSequence) Filter(fn EvalNodeFilterFunc)

EvalNodeFilterable impl.

type EvalSetProviderConfig added in v0.4.1 

type EvalSetProviderConfig struct {
	Provider string
	Config   **ResourceConfig
}

EvalSetProviderConfig sets the parent configuration for a provider without configuring that provider, validating it, etc.

func (*EvalSetProviderConfig) Eval added in v0.4.1 

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

type EvalSetVariables added in v0.4.0 

type EvalSetVariables struct {
	Module    *string
	Variables map[string]interface{}
}

EvalSetVariables is an EvalNode implementation that sets the variables explicitly for interpolation later.

func (*EvalSetVariables) Eval added in v0.4.0 

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

TODO: test

type EvalTypeCheckVariable added in v0.6.15 

type EvalTypeCheckVariable struct {
	Variables  map[string]interface{}
	ModulePath []string
	ModuleTree *module.Tree
}

EvalTypeCheckVariable is an EvalNode which ensures that the variable values which are assigned as inputs to a module (including the root) match the types which are either declared for the variables explicitly or inferred from the default values.

In order to achieve this three things are required:

  • a map of the proposed variable values
  • the configuration tree of the module in which the variable is declared
  • the path to the module (so we know which part of the tree to compare the values against).

func (*EvalTypeCheckVariable) Eval added in v0.6.15 

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

type EvalUndeposeState added in v0.4.0 

type EvalUndeposeState struct {
	Name  string
	State **InstanceState
}

EvalUndeposeState is an EvalNode implementation that reads the InstanceState for a specific resource out of the state.

func (*EvalUndeposeState) Eval added in v0.4.0 

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

TODO: test

type EvalUpdateStateHook added in v0.4.0 

type EvalUpdateStateHook struct{}

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

func (*EvalUpdateStateHook) Eval added in v0.4.0 

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

type EvalValidateCount added in v0.4.0 

type EvalValidateCount struct {
	Resource *config.Resource
}

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

func (*EvalValidateCount) Eval added in v0.4.0 

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

TODO: test

type EvalValidateError added in v0.4.0 

type EvalValidateError struct {
	Warnings []string
	Errors   []error
}

EvalValidateError is the error structure returned if there were validation errors.

func (*EvalValidateError) Error added in v0.4.0 

func (e *EvalValidateError) Error() string

type EvalValidateProvider added in v0.4.0 

type EvalValidateProvider struct {
	Provider *ResourceProvider
	Config   **ResourceConfig
}

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

func (*EvalValidateProvider) Eval added in v0.4.0 

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

type EvalValidateProvisioner added in v0.4.0 

type EvalValidateProvisioner struct {
	Provisioner *ResourceProvisioner
	Config      **ResourceConfig
	ConnConfig  **ResourceConfig
}

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

func (*EvalValidateProvisioner) Eval added in v0.4.0 

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

type EvalValidateResource added in v0.4.0 

type EvalValidateResource struct {
	Provider     *ResourceProvider
	Config       **ResourceConfig
	ResourceName string
	ResourceType string
	ResourceMode config.ResourceMode

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

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

func (*EvalValidateResource) Eval added in v0.4.0 

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

type EvalValidateResourceSelfRef added in v0.9.0 

type EvalValidateResourceSelfRef struct {
	Addr   **ResourceAddress
	Config **config.RawConfig
}

EvalValidateResourceSelfRef is an EvalNode implementation that validates that a configuration doesn't contain a reference to the resource itself.

This must be done prior to interpolating configuration in order to avoid any infinite loop scenarios.

func (*EvalValidateResourceSelfRef) Eval added in v0.9.0 

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

type EvalVariableBlock added in v0.4.0 

type EvalVariableBlock struct {
	Config         **ResourceConfig
	VariableValues map[string]interface{}
}

EvalVariableBlock is an EvalNode implementation that evaluates the given configuration, and uses the final values as a way to set the mapping.

func (*EvalVariableBlock) Eval added in v0.4.0 

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

type EvalWriteDiff added in v0.4.0 

type EvalWriteDiff struct {
	Name string
	Diff **InstanceDiff
}

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

func (*EvalWriteDiff) Eval added in v0.4.0 

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

TODO: test

type EvalWriteOutput added in v0.4.0 

type EvalWriteOutput struct {
	Name      string
	Sensitive bool
	Value     *config.RawConfig
}

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

func (*EvalWriteOutput) Eval added in v0.4.0 

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

TODO: test

type EvalWriteState added in v0.4.0 

type EvalWriteState struct {
	Name         string
	ResourceType string
	Provider     string
	Dependencies []string
	State        **InstanceState
}

EvalWriteState is an EvalNode implementation that writes the primary InstanceState for a specific resource into the state.

func (*EvalWriteState) Eval added in v0.4.0 

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

type EvalWriteStateDeposed added in v0.4.0 

type EvalWriteStateDeposed struct {
	Name         string
	ResourceType string
	Provider     string
	Dependencies []string
	State        **InstanceState
	// Index indicates which instance in the Deposed list to target, or -1 to append.
	Index int
}

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

func (*EvalWriteStateDeposed) Eval added in v0.4.0 

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

type ExpandTransform added in v0.4.0 

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 added in v0.4.0 

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

type FlatConfigTransformer added in v0.7.8 

type FlatConfigTransformer struct {
	Concrete ConcreteResourceNodeFunc // What to turn resources into

	Module *module.Tree
}

FlatConfigTransformer is a GraphTransformer that adds the configuration to the graph. The module used to configure this transformer must be the root module.

This transform adds the nodes but doesn't connect any of the references. The ReferenceTransformer should be used for that.

NOTE: In relation to ConfigTransformer: this is a newer generation config transformer. It puts the _entire_ config into the graph (there is no "flattening" step as before).

func (*FlatConfigTransformer) Transform added in v0.7.8 

func (t *FlatConfigTransformer) 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.
	// The root is represented by a single element list containing
	// RootModuleName
	Path []string
	// contains filtered or unexported fields
}

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

func (*Graph) DirectedGraph added in v0.8.0 

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

func (*Graph) Walk added in v0.4.0 

func (g *Graph) Walk(walker GraphWalker) error

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 added in v0.4.0 

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(path []string) (*Graph, error)
}

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

func InputGraphBuilder added in v0.9.0 

func InputGraphBuilder(p *PlanGraphBuilder) GraphBuilder

InputGraphBuilder creates the graph for the input operation.

Unlike other graph builders, this is a function since it currently modifies and is based on the PlanGraphBuilder. The PlanGraphBuilder passed in will be modified and should not be used for any other operations.

func ValidateGraphBuilder added in v0.9.0 

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 GraphNodeAttachProvider added in v0.7.8 

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

	// ProviderName with no module prefix. Example: "aws".
	ProviderName() string

	// Sets the configuration
	AttachProvider(*config.ProviderConfig)
}

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

type GraphNodeAttachResourceConfig added in v0.7.8 

type GraphNodeAttachResourceConfig interface {
	// ResourceAddr is the address to the resource
	ResourceAddr() *ResourceAddress

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

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

type GraphNodeAttachResourceState added in v0.7.8 

type GraphNodeAttachResourceState interface {
	// The address to the resource for the state
	ResourceAddr() *ResourceAddress

	// Sets the state
	AttachResourceState(*ResourceState)
}

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

type GraphNodeCloseProvider added in v0.6.0 

type GraphNodeCloseProvider interface {
	CloseProviderName() string
}

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 added in v0.6.0 

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 added in v0.7.8 

type GraphNodeCreator interface {
	// ResourceAddr is the address of the resource being created or updated
	CreateAddr() *ResourceAddress
}

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

type GraphNodeDestroyer added in v0.7.8 

type GraphNodeDestroyer interface {
	dag.Vertex

	// ResourceAddr 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() *ResourceAddress
}

GraphNodeDestroyer must be implemented by nodes that destroy resources.

type GraphNodeDestroyerCBD added in v0.7.8 

type GraphNodeDestroyerCBD interface {
	GraphNodeDestroyer

	// 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.

type GraphNodeDynamicExpandable added in v0.4.0 

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 added in v0.4.0 

type GraphNodeEvalable interface {
	EvalTree() EvalNode
}

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

type GraphNodeExpandable added in v0.4.0 

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 added in v0.4.0 

type GraphNodeProvider interface {
	ProviderName() string
}

GraphNodeProvider is an interface that nodes that can be a provider must implement. The ProviderName returned is the name of the provider they satisfy.

type GraphNodeProviderConsumer added in v0.4.0 

type GraphNodeProviderConsumer interface {
	ProvidedBy() []string
}

GraphNodeProviderConsumer is an interface that nodes that require a provider must implement. ProvidedBy must return the name of the provider to use.

type GraphNodeProvisioner added in v0.4.0 

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 added in v0.4.0 

type GraphNodeProvisionerConsumer interface {
	ProvisionedBy() []string
}

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

type GraphNodeReferenceGlobal added in v0.7.8 

type GraphNodeReferenceGlobal interface {
	// Set to true to signal that references and name are fully
	// qualified. See the above docs for more information.
	ReferenceGlobal() bool
}

GraphNodeReferenceGlobal is an interface that can optionally be implemented. If ReferenceGlobal returns true, then the References() and ReferenceableName() must be _fully qualified_ with "module.foo.bar" etc.

This allows a node to reference and be referenced by a specific name that may cross module boundaries. This can be very dangerous so use this wisely.

The primary use case for this is module boundaries (variables coming in).

type GraphNodeReferenceable added in v0.7.8 

type GraphNodeReferenceable interface {
	// ReferenceableName is the name by which this can be referenced.
	// This can be either just the type, or include the field. Example:
	// "aws_instance.bar" or "aws_instance.bar.id".
	ReferenceableName() []string
}

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 added in v0.7.8 

type GraphNodeReferencer interface {
	// References are the list of things that this node references. This
	// can include fields or just the type, just like GraphNodeReferenceable
	// above.
	References() []string
}

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

type GraphNodeResource 

type GraphNodeResource interface {
	ResourceAddr() *ResourceAddress
}

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 GraphNodeSubPath added in v0.5.0 

type GraphNodeSubPath interface {
	Path() []string
}

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

type GraphNodeSubgraph added in v0.4.0 

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 added in v0.9.6 

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 added in v0.4.0 

type GraphNodeTargetable interface {
	SetTargets([]ResourceAddress)
}

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 GraphSemanticChecker added in v0.4.0 

type GraphSemanticChecker interface {
	Check(*dag.Graph) error
}

GraphSemanticChecker is the interface that semantic checks across the entire Terraform graph implement.

The graph should NOT be modified by the semantic checker.

type GraphTransformer added in v0.4.0 

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 added in v0.7.8 

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 added in v0.7.8 

func GraphTransformMulti(ts ...GraphTransformer) GraphTransformer

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

type GraphType added in v0.8.0 

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
	GraphTypeInput
	GraphTypeValidate
)

func (GraphType) String added in v0.8.0 

func (i GraphType) String() string

type GraphVertexTransformer added in v0.4.0 

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 added in v0.4.0 

type GraphWalker interface {
	EnterPath([]string) EvalContext
	ExitPath([]string)
	EnterVertex(dag.Vertex)
	ExitVertex(dag.Vertex, error)
	EnterEvalTree(dag.Vertex, EvalNode) EvalNode
	ExitEvalTree(dag.Vertex, interface{}, error) error
}

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

type GraphWalkerPanicwrapper added in v0.7.9 

type GraphWalkerPanicwrapper interface {
	GraphWalker

	// Panic is called when a panic occurs. This will halt the panic from
	// propogating so if the walker wants it to crash still it should panic
	// again. This is called from within a defer so runtime/debug.Stack can
	// be used to get the stack trace of the panic.
	Panic(dag.Vertex, interface{})
}

GrpahWalkerPanicwrapper can be optionally implemented to catch panics that occur while walking the graph. This is not generally recommended since panics should crash Terraform and result in a bug report. However, this is particularly useful for situations like the shadow graph where you don't ever want to cause a panic.

func GraphWalkerPanicwrap added in v0.7.9 

func GraphWalkerPanicwrap(w GraphWalker) GraphWalkerPanicwrapper

GraphWalkerPanicwrap wraps an existing Graphwalker to wrap and swallow the panics. This doesn't lose the panics since the panics are still returned as errors as part of a graph walk.

type Hook 

type Hook interface {
	// PreApply and PostApply are called before and after a single
	// resource is applied. The error argument in PostApply is the
	// error, if any, that was returned from the provider Apply call itself.
	PreApply(*InstanceInfo, *InstanceState, *InstanceDiff) (HookAction, error)
	PostApply(*InstanceInfo, *InstanceState, error) (HookAction, error)

	// PreDiff and PostDiff are called before and after a single resource
	// resource is diffed.
	PreDiff(*InstanceInfo, *InstanceState) (HookAction, error)
	PostDiff(*InstanceInfo, *InstanceDiff) (HookAction, error)

	// Provisioning hooks
	//
	// All should be self-explanatory. ProvisionOutput is called with
	// output sent back by the provisioners. This will be called multiple
	// times as output comes in, but each call should represent a line of
	// output. The ProvisionOutput method cannot control whether the
	// hook continues running.
	PreProvisionResource(*InstanceInfo, *InstanceState) (HookAction, error)
	PostProvisionResource(*InstanceInfo, *InstanceState) (HookAction, error)
	PreProvision(*InstanceInfo, string) (HookAction, error)
	PostProvision(*InstanceInfo, string, error) (HookAction, error)
	ProvisionOutput(*InstanceInfo, string, string)

	// PreRefresh and PostRefresh are called before and after a single
	// resource state is refreshed, respectively.
	PreRefresh(*InstanceInfo, *InstanceState) (HookAction, error)
	PostRefresh(*InstanceInfo, *InstanceState) (HookAction, error)

	// PostStateUpdate is called after the state is updated.
	PostStateUpdate(*State) (HookAction, error)

	// PreImportState and PostImportState are called before and after
	// a single resource's state is being improted.
	PreImportState(*InstanceInfo, string) (HookAction, error)
	PostImportState(*InstanceInfo, []*InstanceState) (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 added in v0.7.0 

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

	// Module is the module to add to the graph. See ImportOpts.Module.
	Module *module.Tree

	// Providers is the list of providers supported.
	Providers []string
}

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 added in v0.7.0 

func (b *ImportGraphBuilder) Build(path []string) (*Graph, error)

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

func (*ImportGraphBuilder) Steps added in v0.7.0 

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

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

type ImportOpts added in v0.7.0 

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

	// Module is optional, and specifies a config module that is loaded
	// into the graph and evaluated. The use case for this is to provide
	// provider configuration.
	Module *module.Tree
}

ImportOpts are used as the configuration for Import.

type ImportProviderValidateTransformer added in v0.8.0 

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 added in v0.8.0 

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

type ImportStateTransformer added in v0.7.0 

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 added in v0.7.0 

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

type ImportTarget added in v0.7.0 

type ImportTarget struct {
	// Addr is the full resource address of the resource to import.
	// Example: "module.foo.aws_instance.bar"
	Addr string

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

	// Provider string
	Provider string
}

ImportTarget is a single resource to import.

type InputMode added in v0.3.0 

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 added in v0.3.0 

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 InstanceDiff added in v0.3.0 

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 added in v0.7.0 

func NewInstanceDiff() *InstanceDiff

func (*InstanceDiff) ChangeType added in v0.3.0 

func (d *InstanceDiff) ChangeType() DiffChangeType

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

func (*InstanceDiff) Copy added in v0.7.9 

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

func (*InstanceDiff) CopyAttributes added in v0.7.0 

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

Safely copies the Attributes map

func (*InstanceDiff) DeepCopy added in v0.7.8 

func (d *InstanceDiff) DeepCopy() *InstanceDiff

DeepCopy performs a deep copy of all parts of the InstanceDiff

func (*InstanceDiff) DelAttribute added in v0.7.0 

func (d *InstanceDiff) DelAttribute(key string)

func (*InstanceDiff) Empty added in v0.3.0 

func (d *InstanceDiff) Empty() bool

Empty returns true if this diff encapsulates no changes.

func (*InstanceDiff) Equal added in v0.7.8 

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 added in v0.7.0 

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

func (*InstanceDiff) GetAttributesLen added in v0.7.0 

func (d *InstanceDiff) GetAttributesLen() int

func (*InstanceDiff) GetDestroy added in v0.7.0 

func (d *InstanceDiff) GetDestroy() bool

func (*InstanceDiff) GetDestroyDeposed added in v0.8.0 

func (d *InstanceDiff) GetDestroyDeposed() bool

func (*InstanceDiff) GetDestroyTainted added in v0.7.0 

func (d *InstanceDiff) GetDestroyTainted() bool

func (*InstanceDiff) GoString added in v0.4.0 

func (d *InstanceDiff) GoString() string

func (*InstanceDiff) Lock added in v0.7.9 

func (d *InstanceDiff) Lock()

func (*InstanceDiff) RequiresNew added in v0.3.0 

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 added in v0.3.0 

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 added in v0.7.0 

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

func (*InstanceDiff) SetDestroy added in v0.7.0 

func (d *InstanceDiff) SetDestroy(b bool)

func (*InstanceDiff) SetDestroyDeposed added in v0.8.0 

func (d *InstanceDiff) SetDestroyDeposed(b bool)

func (*InstanceDiff) SetTainted added in v0.7.0 

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 added in v0.7.9 

func (d *InstanceDiff) Unlock()

type InstanceInfo added in v0.3.0 

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
	// contains filtered or unexported fields
}

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

func (*InstanceInfo) HumanId added in v0.3.0 

func (i *InstanceInfo) HumanId() string

HumanId is a unique Id that is human-friendly and useful for UI elements.

type InstanceState added in v0.3.0 

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 (*InstanceState) DeepCopy added in v0.7.0 

func (s *InstanceState) DeepCopy() *InstanceState

func (*InstanceState) Empty added in v0.4.0 

func (s *InstanceState) Empty() bool

func (*InstanceState) Equal added in v0.4.0 

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

func (*InstanceState) Lock added in v0.7.3 

func (s *InstanceState) Lock()

func (*InstanceState) MergeDiff added in v0.3.0 

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 added in v0.7.3 

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

Copy all the Fields from another InstanceState

func (*InstanceState) String added in v0.3.0 

func (s *InstanceState) String() string

func (*InstanceState) Unlock added in v0.7.3 

func (s *InstanceState) Unlock()

type InstanceType added in v0.4.0 

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 added in v0.4.0 

func ParseInstanceType(s string) (InstanceType, error)

func (InstanceType) String added in v0.4.0 

func (i InstanceType) String() string

type Interpolater added in v0.4.0 

type Interpolater struct {
	Operation          walkOperation
	Meta               *ContextMeta
	Module             *module.Tree
	State              *State
	StateLock          *sync.RWMutex
	VariableValues     map[string]interface{}
	VariableValuesLock *sync.Mutex
}

Interpolater is the structure responsible for determining the values for interpolations such as `aws_instance.foo.bar`.

func (*Interpolater) Values added in v0.4.0 

func (i *Interpolater) Values(
	scope *InterpolationScope,
	vars map[string]config.InterpolatedVariable) (map[string]ast.Variable, error)

Values returns the values for all the variables in the given map.

type InterpolationScope added in v0.4.0 

type InterpolationScope struct {
	Path     []string
	Resource *Resource
}

InterpolationScope is the current scope of execution. This is required since some variables which are interpolated are dependent on what we're operating on and where we are.

type MissingProviderTransformer added in v0.4.0 

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

	// AllowAny will not check that a provider is supported before adding
	// it to the graph.
	AllowAny bool

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

MissingProviderTransformer is a GraphTransformer that adds nodes for missing providers into the graph. Specifically, it creates provider configuration nodes for all the providers that we support. These are pruned later during an optimization pass.

func (*MissingProviderTransformer) Transform added in v0.4.0 

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

type MissingProvisionerTransformer added in v0.4.0 

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 added in v0.4.0 

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

type MockEvalContext added in v0.4.0 

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

	HookCalled bool
	HookHook   Hook
	HookError  error

	InputCalled bool
	InputInput  UIInput

	InitProviderCalled   bool
	InitProviderName     string
	InitProviderProvider ResourceProvider
	InitProviderError    error

	ProviderCalled   bool
	ProviderName     string
	ProviderProvider ResourceProvider

	CloseProviderCalled   bool
	CloseProviderName     string
	CloseProviderProvider ResourceProvider

	ProviderInputCalled bool
	ProviderInputName   string
	ProviderInputConfig map[string]interface{}

	SetProviderInputCalled bool
	SetProviderInputName   string
	SetProviderInputConfig map[string]interface{}

	ConfigureProviderCalled bool
	ConfigureProviderName   string
	ConfigureProviderConfig *ResourceConfig
	ConfigureProviderError  error

	SetProviderConfigCalled bool
	SetProviderConfigName   string
	SetProviderConfigConfig *ResourceConfig

	ParentProviderConfigCalled bool
	ParentProviderConfigName   string
	ParentProviderConfigConfig *ResourceConfig

	InitProvisionerCalled      bool
	InitProvisionerName        string
	InitProvisionerProvisioner ResourceProvisioner
	InitProvisionerError       error

	ProvisionerCalled      bool
	ProvisionerName        string
	ProvisionerProvisioner ResourceProvisioner

	CloseProvisionerCalled      bool
	CloseProvisionerName        string
	CloseProvisionerProvisioner ResourceProvisioner

	InterpolateCalled       bool
	InterpolateConfig       *config.RawConfig
	InterpolateResource     *Resource
	InterpolateConfigResult *ResourceConfig
	InterpolateError        error

	PathCalled bool
	PathPath   []string

	SetVariablesCalled    bool
	SetVariablesModule    string
	SetVariablesVariables map[string]interface{}

	DiffCalled bool
	DiffDiff   *Diff
	DiffLock   *sync.RWMutex

	StateCalled bool
	StateState  *State
	StateLock   *sync.RWMutex
}

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

func (*MockEvalContext) CloseProvider added in v0.6.0 

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

func (*MockEvalContext) CloseProvisioner added in v0.6.0 

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

func (*MockEvalContext) ConfigureProvider added in v0.4.0 

func (c *MockEvalContext) ConfigureProvider(n string, cfg *ResourceConfig) error

func (*MockEvalContext) Diff added in v0.4.0 

func (c *MockEvalContext) Diff() (*Diff, *sync.RWMutex)

func (*MockEvalContext) Hook added in v0.4.0 

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

func (*MockEvalContext) InitProvider added in v0.4.0 

func (c *MockEvalContext) InitProvider(n string) (ResourceProvider, error)

func (*MockEvalContext) InitProvisioner added in v0.4.0 

func (c *MockEvalContext) InitProvisioner(n string) (ResourceProvisioner, error)

func (*MockEvalContext) Input added in v0.4.0 

func (c *MockEvalContext) Input() UIInput

func (*MockEvalContext) Interpolate added in v0.4.0 

func (c *MockEvalContext) Interpolate(
	config *config.RawConfig, resource *Resource) (*ResourceConfig, error)

func (*MockEvalContext) ParentProviderConfig added in v0.4.0 

func (c *MockEvalContext) ParentProviderConfig(n string) *ResourceConfig

func (*MockEvalContext) Path added in v0.4.0 

func (c *MockEvalContext) Path() []string

func (*MockEvalContext) Provider added in v0.4.0 

func (c *MockEvalContext) Provider(n string) ResourceProvider

func (*MockEvalContext) ProviderInput added in v0.4.0 

func (c *MockEvalContext) ProviderInput(n string) map[string]interface{}

func (*MockEvalContext) Provisioner added in v0.4.0 

func (c *MockEvalContext) Provisioner(n string) ResourceProvisioner

func (*MockEvalContext) SetProviderConfig added in v0.4.1 

func (c *MockEvalContext) SetProviderConfig(
	n string, cfg *ResourceConfig) error

func (*MockEvalContext) SetProviderInput added in v0.4.0 

func (c *MockEvalContext) SetProviderInput(n string, cfg map[string]interface{})

func (*MockEvalContext) SetVariables added in v0.4.0 

func (c *MockEvalContext) SetVariables(n string, vs map[string]interface{})

func (*MockEvalContext) State added in v0.4.0 

func (c *MockEvalContext) State() (*State, *sync.RWMutex)

func (*MockEvalContext) Stopped added in v0.9.0 

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

type MockHook 

type MockHook struct {
	sync.Mutex

	PreApplyCalled bool
	PreApplyInfo   *InstanceInfo
	PreApplyDiff   *InstanceDiff
	PreApplyState  *InstanceState
	PreApplyReturn HookAction
	PreApplyError  error

	PostApplyCalled      bool
	PostApplyInfo        *InstanceInfo
	PostApplyState       *InstanceState
	PostApplyError       error
	PostApplyReturn      HookAction
	PostApplyReturnError error
	PostApplyFn          func(*InstanceInfo, *InstanceState, error) (HookAction, error)

	PreDiffCalled bool
	PreDiffInfo   *InstanceInfo
	PreDiffState  *InstanceState
	PreDiffReturn HookAction
	PreDiffError  error

	PostDiffCalled bool
	PostDiffInfo   *InstanceInfo
	PostDiffDiff   *InstanceDiff
	PostDiffReturn HookAction
	PostDiffError  error

	PreProvisionResourceCalled bool
	PreProvisionResourceInfo   *InstanceInfo
	PreProvisionInstanceState  *InstanceState
	PreProvisionResourceReturn HookAction
	PreProvisionResourceError  error

	PostProvisionResourceCalled bool
	PostProvisionResourceInfo   *InstanceInfo
	PostProvisionInstanceState  *InstanceState
	PostProvisionResourceReturn HookAction
	PostProvisionResourceError  error

	PreProvisionCalled        bool
	PreProvisionInfo          *InstanceInfo
	PreProvisionProvisionerId string
	PreProvisionReturn        HookAction
	PreProvisionError         error

	PostProvisionCalled        bool
	PostProvisionInfo          *InstanceInfo
	PostProvisionProvisionerId string
	PostProvisionErrorArg      error
	PostProvisionReturn        HookAction
	PostProvisionError         error

	ProvisionOutputCalled        bool
	ProvisionOutputInfo          *InstanceInfo
	ProvisionOutputProvisionerId string
	ProvisionOutputMessage       string

	PostRefreshCalled bool
	PostRefreshInfo   *InstanceInfo
	PostRefreshState  *InstanceState
	PostRefreshReturn HookAction
	PostRefreshError  error

	PreRefreshCalled bool
	PreRefreshInfo   *InstanceInfo
	PreRefreshState  *InstanceState
	PreRefreshReturn HookAction
	PreRefreshError  error

	PreImportStateCalled bool
	PreImportStateInfo   *InstanceInfo
	PreImportStateId     string
	PreImportStateReturn HookAction
	PreImportStateError  error

	PostImportStateCalled bool
	PostImportStateInfo   *InstanceInfo
	PostImportStateState  []*InstanceState
	PostImportStateReturn HookAction
	PostImportStateError  error

	PostStateUpdateCalled bool
	PostStateUpdateState  *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(n *InstanceInfo, s *InstanceState, e error) (HookAction, error)

func (*MockHook) PostDiff 

func (h *MockHook) PostDiff(n *InstanceInfo, d *InstanceDiff) (HookAction, error)

func (*MockHook) PostImportState added in v0.7.0 

func (h *MockHook) PostImportState(info *InstanceInfo, s []*InstanceState) (HookAction, error)

func (*MockHook) PostProvision 

func (h *MockHook) PostProvision(n *InstanceInfo, provId string, err error) (HookAction, error)

func (*MockHook) PostProvisionResource 

func (h *MockHook) PostProvisionResource(n *InstanceInfo, s *InstanceState) (HookAction, error)

func (*MockHook) PostRefresh 

func (h *MockHook) PostRefresh(n *InstanceInfo, s *InstanceState) (HookAction, error)

func (*MockHook) PostStateUpdate added in v0.4.0 

func (h *MockHook) PostStateUpdate(s *State) (HookAction, error)

func (*MockHook) PreApply 

func (h *MockHook) PreApply(n *InstanceInfo, s *InstanceState, d *InstanceDiff) (HookAction, error)

func (*MockHook) PreDiff 

func (h *MockHook) PreDiff(n *InstanceInfo, s *InstanceState) (HookAction, error)

func (*MockHook) PreImportState added in v0.7.0 

func (h *MockHook) PreImportState(info *InstanceInfo, id string) (HookAction, error)

func (*MockHook) PreProvision 

func (h *MockHook) PreProvision(n *InstanceInfo, provId string) (HookAction, error)

func (*MockHook) PreProvisionResource 

func (h *MockHook) PreProvisionResource(n *InstanceInfo, s *InstanceState) (HookAction, error)

func (*MockHook) PreRefresh 

func (h *MockHook) PreRefresh(n *InstanceInfo, s *InstanceState) (HookAction, error)

func (*MockHook) ProvisionOutput added in v0.3.0 

func (h *MockHook) ProvisionOutput(
	n *InstanceInfo,
	provId string,
	msg string)

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
	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 added in v0.6.0 

func (p *MockResourceProvider) Close() error

func (*MockResourceProvider) Configure 

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

func (*MockResourceProvider) DataSources added in v0.7.0 

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

func (*MockResourceProvider) Diff 

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

func (*MockResourceProvider) ImportState added in v0.7.0 

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

func (*MockResourceProvider) Input added in v0.3.0 

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

func (*MockResourceProvider) ReadDataApply added in v0.7.0 

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

func (*MockResourceProvider) ReadDataDiff added in v0.7.0 

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 added in v0.8.0 

func (p *MockResourceProvider) Stop() error

func (*MockResourceProvider) Validate 

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

func (*MockResourceProvider) ValidateDataSource added in v0.7.0 

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{}

	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) Stop added in v0.9.0 

func (p *MockResourceProvisioner) Stop() error

func (*MockResourceProvisioner) Validate 

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

type MockUIInput added in v0.3.0 

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 added in v0.3.0 

func (i *MockUIInput) Input(opts *InputOpts) (string, error)

type MockUIOutput added in v0.3.0 

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

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

func (*MockUIOutput) Output added in v0.3.0 

func (o *MockUIOutput) Output(v string)

type ModuleDiff added in v0.3.0 

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 added in v0.3.0 

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 added in v0.3.0 

func (d *ModuleDiff) Empty() bool

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

func (*ModuleDiff) Instances added in v0.3.0 

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 added in v0.3.0 

func (d *ModuleDiff) IsRoot() bool

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

func (*ModuleDiff) String added in v0.3.0 

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 added in v0.3.0 

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"`

	// 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) Equal added in v0.4.0 

func (m *ModuleState) Equal(other *ModuleState) bool

Equal tests whether one module state is equal to another.

func (*ModuleState) IsDescendent added in v0.7.2 

func (m *ModuleState) IsDescendent(other *ModuleState) bool

IsDescendent returns true if other is a descendent of this module.

func (*ModuleState) IsRoot added in v0.3.0 

func (m *ModuleState) IsRoot() bool

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

func (*ModuleState) Lock added in v0.7.3 

func (s *ModuleState) Lock()

func (*ModuleState) Orphans added in v0.3.0 

func (m *ModuleState) Orphans(c *config.Config) []string

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) String added in v0.3.0 

func (m *ModuleState) String() string

func (*ModuleState) Unlock added in v0.7.3 

func (s *ModuleState) Unlock()

func (*ModuleState) View added in v0.3.0 

func (m *ModuleState) View(id string) *ModuleState

View returns a view with the given resource prefix.

type ModuleVariableTransformer added in v0.7.8 

type ModuleVariableTransformer struct {
	Module *module.Tree

	DisablePrune bool // True if pruning unreferenced should be disabled
}

ModuleVariableTransformer is a GraphTransformer that adds all the variables in the configuration to the graph.

This only adds variables that are referenced by other things in the graph. If a module variable is not referenced, it won't be added to the graph.

func (*ModuleVariableTransformer) Transform added in v0.7.8 

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(*InstanceInfo, *InstanceState, error) (HookAction, error)

func (*NilHook) PostDiff 

func (*NilHook) PostDiff(*InstanceInfo, *InstanceDiff) (HookAction, error)

func (*NilHook) PostImportState added in v0.7.0 

func (*NilHook) PostImportState(*InstanceInfo, []*InstanceState) (HookAction, error)

func (*NilHook) PostProvision 

func (*NilHook) PostProvision(*InstanceInfo, string, error) (HookAction, error)

func (*NilHook) PostProvisionResource 

func (*NilHook) PostProvisionResource(*InstanceInfo, *InstanceState) (HookAction, error)

func (*NilHook) PostRefresh 

func (*NilHook) PostRefresh(*InstanceInfo, *InstanceState) (HookAction, error)

func (*NilHook) PostStateUpdate added in v0.4.0 

func (*NilHook) PostStateUpdate(*State) (HookAction, error)

func (*NilHook) PreApply 

func (*NilHook) PreApply(*InstanceInfo, *InstanceState, *InstanceDiff) (HookAction, error)

func (*NilHook) PreDiff 

func (*NilHook) PreDiff(*InstanceInfo, *InstanceState) (HookAction, error)

func (*NilHook) PreImportState added in v0.7.0 

func (*NilHook) PreImportState(*InstanceInfo, string) (HookAction, error)

func (*NilHook) PreProvision 

func (*NilHook) PreProvision(*InstanceInfo, string) (HookAction, error)

func (*NilHook) PreProvisionResource 

func (*NilHook) PreProvisionResource(*InstanceInfo, *InstanceState) (HookAction, error)

func (*NilHook) PreRefresh 

func (*NilHook) PreRefresh(*InstanceInfo, *InstanceState) (HookAction, error)

func (*NilHook) ProvisionOutput added in v0.3.0 

func (*NilHook) ProvisionOutput(
	*InstanceInfo, string, string)

type NodeAbstractCountResource added in v0.9.0 

type NodeAbstractCountResource struct {
	*NodeAbstractResource

	// Validate, if true, will perform the validation for the count.
	// This should only be turned on for the "validate" operation.
	Validate bool
}

NodeAbstractCountResource should be embedded instead of NodeAbstractResource if the resource has a `count` value that needs to be expanded.

The embedder should implement `DynamicExpand` to process the count.

func (*NodeAbstractCountResource) EvalTree added in v0.9.0 

func (n *NodeAbstractCountResource) EvalTree() EvalNode

GraphNodeEvalable

type NodeAbstractProvider added in v0.7.8 

type NodeAbstractProvider struct {
	NameValue string
	PathValue []string

	Config *config.ProviderConfig
}

NodeAbstractProvider represents a provider that has no associated operations. It registers all the common interfaces across operations for providers.

func (*NodeAbstractProvider) AttachProvider added in v0.7.8 

func (n *NodeAbstractProvider) AttachProvider(c *config.ProviderConfig)

GraphNodeAttachProvider

func (*NodeAbstractProvider) DotNode added in v0.8.0 

func (n *NodeAbstractProvider) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

GraphNodeDotter impl.

func (*NodeAbstractProvider) Name added in v0.7.8 

func (n *NodeAbstractProvider) Name() string

func (*NodeAbstractProvider) Path added in v0.7.8 

func (n *NodeAbstractProvider) Path() []string

GraphNodeSubPath

func (*NodeAbstractProvider) ProviderConfig added in v0.7.8 

func (n *NodeAbstractProvider) ProviderConfig() *config.RawConfig

GraphNodeProvider

func (*NodeAbstractProvider) ProviderName added in v0.7.8 

func (n *NodeAbstractProvider) ProviderName() string

GraphNodeProvider

func (*NodeAbstractProvider) References added in v0.7.8 

func (n *NodeAbstractProvider) References() []string

GraphNodeReferencer

func (*NodeAbstractProvider) RemoveIfNotTargeted added in v0.9.0 

func (n *NodeAbstractProvider) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

type NodeAbstractResource added in v0.7.8 

type NodeAbstractResource struct {
	Addr *ResourceAddress // Addr is the address for this resource

	Config        *config.Resource // Config is the resource in the config
	ResourceState *ResourceState   // ResourceState is the ResourceState for this

	Targets []ResourceAddress // Set from GraphNodeTargetable
}

NodeAbstractResource represents a resource that has no associated operations. It registers all the interfaces for a resource that common across multiple operation types.

func (*NodeAbstractResource) AttachResourceConfig added in v0.7.8 

func (n *NodeAbstractResource) AttachResourceConfig(c *config.Resource)

GraphNodeAttachResourceConfig

func (*NodeAbstractResource) AttachResourceState added in v0.7.8 

func (n *NodeAbstractResource) AttachResourceState(s *ResourceState)

GraphNodeAttachResourceState

func (*NodeAbstractResource) DotNode added in v0.8.0 

func (n *NodeAbstractResource) DotNode(name string, opts *dag.DotOpts) *dag.DotNode

GraphNodeDotter impl.

func (*NodeAbstractResource) Name added in v0.7.8 

func (n *NodeAbstractResource) Name() string

func (*NodeAbstractResource) Path added in v0.7.8 

func (n *NodeAbstractResource) Path() []string

GraphNodeSubPath

func (*NodeAbstractResource) ProvidedBy added in v0.7.8 

func (n *NodeAbstractResource) ProvidedBy() []string

GraphNodeProviderConsumer

func (*NodeAbstractResource) ProvisionedBy added in v0.7.8 

func (n *NodeAbstractResource) ProvisionedBy() []string

GraphNodeProvisionerConsumer

func (*NodeAbstractResource) ReferenceableName added in v0.7.8 

func (n *NodeAbstractResource) ReferenceableName() []string

GraphNodeReferenceable

func (*NodeAbstractResource) References added in v0.7.8 

func (n *NodeAbstractResource) References() []string

GraphNodeReferencer

func (*NodeAbstractResource) ResourceAddr added in v0.7.8 

func (n *NodeAbstractResource) ResourceAddr() *ResourceAddress

GraphNodeResource, GraphNodeAttachResourceState

func (*NodeAbstractResource) ResourceAddress added in v0.7.8 

func (n *NodeAbstractResource) ResourceAddress() *ResourceAddress

GraphNodeAddressable, TODO: remove, used by target, should unify

func (*NodeAbstractResource) SetTargets added in v0.7.8 

func (n *NodeAbstractResource) SetTargets(targets []ResourceAddress)

GraphNodeTargetable

func (*NodeAbstractResource) StateReferences added in v0.9.0 

func (n *NodeAbstractResource) StateReferences() []string

StateReferences returns the dependencies to put into the state for this resource.

type NodeApplyableModuleVariable added in v0.7.8 

type NodeApplyableModuleVariable struct {
	PathValue []string
	Config    *config.Variable  // Config is the var in the config
	Value     *config.RawConfig // Value is the value that is set

	Module *module.Tree // Antiquated, want to remove
}

NodeApplyableModuleVariable represents a module variable input during the apply step.

func (*NodeApplyableModuleVariable) EvalTree added in v0.7.8 

func (n *NodeApplyableModuleVariable) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeApplyableModuleVariable) Name added in v0.7.8 

func (n *NodeApplyableModuleVariable) Name() string

func (*NodeApplyableModuleVariable) Path added in v0.7.8 

func (n *NodeApplyableModuleVariable) Path() []string

GraphNodeSubPath

func (*NodeApplyableModuleVariable) ReferenceGlobal added in v0.7.8 

func (n *NodeApplyableModuleVariable) ReferenceGlobal() bool

GraphNodeReferenceGlobal

func (*NodeApplyableModuleVariable) ReferenceableName added in v0.7.8 

func (n *NodeApplyableModuleVariable) ReferenceableName() []string

GraphNodeReferenceable

func (*NodeApplyableModuleVariable) References added in v0.7.8 

func (n *NodeApplyableModuleVariable) References() []string

GraphNodeReferencer

func (*NodeApplyableModuleVariable) RemoveIfNotTargeted added in v0.8.0 

func (n *NodeApplyableModuleVariable) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

type NodeApplyableOutput added in v0.7.8 

type NodeApplyableOutput struct {
	PathValue []string
	Config    *config.Output // Config is the output in the config
}

NodeApplyableOutput represents an output that is "applyable": it is ready to be applied.

func (*NodeApplyableOutput) EvalTree added in v0.7.8 

func (n *NodeApplyableOutput) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeApplyableOutput) Name added in v0.7.8 

func (n *NodeApplyableOutput) Name() string

func (*NodeApplyableOutput) Path added in v0.7.8 

func (n *NodeApplyableOutput) Path() []string

GraphNodeSubPath

func (*NodeApplyableOutput) ReferenceableName added in v0.7.8 

func (n *NodeApplyableOutput) ReferenceableName() []string

GraphNodeReferenceable

func (*NodeApplyableOutput) References added in v0.7.8 

func (n *NodeApplyableOutput) References() []string

GraphNodeReferencer

func (*NodeApplyableOutput) RemoveIfNotTargeted added in v0.8.7 

func (n *NodeApplyableOutput) RemoveIfNotTargeted() bool

RemovableIfNotTargeted

func (*NodeApplyableOutput) TargetDownstream added in v0.9.6 

func (n *NodeApplyableOutput) TargetDownstream(targetedDeps, untargetedDeps *dag.Set) bool

GraphNodeTargetDownstream

type NodeApplyableProvider added in v0.7.8 

type NodeApplyableProvider struct {
	*NodeAbstractProvider
}

NodeApplyableProvider represents a provider during an apply.

func (*NodeApplyableProvider) EvalTree added in v0.7.8 

func (n *NodeApplyableProvider) EvalTree() EvalNode

GraphNodeEvalable

type NodeApplyableResource added in v0.7.8 

type NodeApplyableResource struct {
	*NodeAbstractResource
}

NodeApplyableResource represents a resource that is "applyable": it is ready to be applied and is represented by a diff.

func (*NodeApplyableResource) CreateAddr added in v0.7.8 

func (n *NodeApplyableResource) CreateAddr() *ResourceAddress

GraphNodeCreator

func (*NodeApplyableResource) EvalTree added in v0.7.8 

func (n *NodeApplyableResource) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeApplyableResource) References added in v0.8.0 

func (n *NodeApplyableResource) References() []string

GraphNodeReferencer, overriding NodeAbstractResource

type NodeCountBoundary added in v0.7.8 

type NodeCountBoundary struct{}

NodeCountBoundary fixes any "count boundarie" in the state: resources that are named "foo.0" when they should be named "foo"

func (*NodeCountBoundary) EvalTree added in v0.7.8 

func (n *NodeCountBoundary) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeCountBoundary) Name added in v0.7.8 

func (n *NodeCountBoundary) Name() string

type NodeDestroyResource added in v0.7.8 

type NodeDestroyResource struct {
	*NodeAbstractResource
}

NodeDestroyResource represents a resource that is to be destroyed.

func (*NodeDestroyResource) CreateBeforeDestroy added in v0.7.8 

func (n *NodeDestroyResource) CreateBeforeDestroy() bool

GraphNodeDestroyerCBD

func (*NodeDestroyResource) DestroyAddr added in v0.7.8 

func (n *NodeDestroyResource) DestroyAddr() *ResourceAddress

GraphNodeDestroyer

func (*NodeDestroyResource) DynamicExpand added in v0.7.8 

func (n *NodeDestroyResource) DynamicExpand(ctx EvalContext) (*Graph, error)

GraphNodeDynamicExpandable

func (*NodeDestroyResource) EvalTree added in v0.7.8 

func (n *NodeDestroyResource) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeDestroyResource) ModifyCreateBeforeDestroy added in v0.8.0 

func (n *NodeDestroyResource) ModifyCreateBeforeDestroy(v bool) error

GraphNodeDestroyerCBD

func (*NodeDestroyResource) Name added in v0.7.8 

func (n *NodeDestroyResource) Name() string

func (*NodeDestroyResource) ReferenceableName added in v0.7.8 

func (n *NodeDestroyResource) ReferenceableName() []string

GraphNodeReferenceable, overriding NodeAbstractResource

func (*NodeDestroyResource) References added in v0.7.8 

func (n *NodeDestroyResource) References() []string

GraphNodeReferencer, overriding NodeAbstractResource

type NodeDestroyableDataResource added in v0.9.0 

type NodeDestroyableDataResource struct {
	*NodeAbstractResource
}

NodeDestroyableDataResource represents a resource that is "plannable": it is ready to be planned in order to create a diff.

func (*NodeDestroyableDataResource) EvalTree added in v0.9.0 

func (n *NodeDestroyableDataResource) EvalTree() EvalNode

GraphNodeEvalable

type NodeDestroyableModuleVariable added in v0.7.8 

type NodeDestroyableModuleVariable struct {
	PathValue []string
}

NodeDestroyableModule represents a module destruction.

func (*NodeDestroyableModuleVariable) EvalTree added in v0.7.8 

func (n *NodeDestroyableModuleVariable) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeDestroyableModuleVariable) Name added in v0.7.8 

func (n *NodeDestroyableModuleVariable) Name() string

func (*NodeDestroyableModuleVariable) Path added in v0.7.8 

func (n *NodeDestroyableModuleVariable) Path() []string

GraphNodeSubPath

type NodeDisabledProvider added in v0.7.8 

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) EvalTree added in v0.7.8 

func (n *NodeDisabledProvider) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeDisabledProvider) Name added in v0.7.8 

func (n *NodeDisabledProvider) Name() string

type NodeOutputOrphan added in v0.7.8 

type NodeOutputOrphan struct {
	OutputName string
	PathValue  []string
}

NodeOutputOrphan represents an output that is an orphan.

func (*NodeOutputOrphan) EvalTree added in v0.7.8 

func (n *NodeOutputOrphan) EvalTree() EvalNode

GraphNodeEvalable

func (*NodeOutputOrphan) Name added in v0.7.8 

func (n *NodeOutputOrphan) Name() string

func (*NodeOutputOrphan) Path added in v0.7.8 

func (n *NodeOutputOrphan) Path() []string

GraphNodeSubPath

type NodePlanDestroyableResource added in v0.7.8 

type NodePlanDestroyableResource struct {
	*NodeAbstractResource
}

NodePlanDestroyableResource represents a resource that is "applyable": it is ready to be applied and is represented by a diff.

func (*NodePlanDestroyableResource) DestroyAddr added in v0.7.11 

func (n *NodePlanDestroyableResource) DestroyAddr() *ResourceAddress

GraphNodeDestroyer

func (*NodePlanDestroyableResource) EvalTree added in v0.7.8 

func (n *NodePlanDestroyableResource) EvalTree() EvalNode

GraphNodeEvalable

type NodePlannableResource added in v0.7.10 

type NodePlannableResource struct {
	*NodeAbstractCountResource
}

NodePlannableResource represents a resource that is "plannable": it is ready to be planned in order to create a diff.

func (*NodePlannableResource) DynamicExpand added in v0.7.10 

func (n *NodePlannableResource) DynamicExpand(ctx EvalContext) (*Graph, error)

GraphNodeDynamicExpandable

type NodePlannableResourceInstance added in v0.7.10 

type NodePlannableResourceInstance struct {
	*NodeAbstractResource
}

NodePlannableResourceInstance represents a _single_ resource instance that is plannable. This means this represents a single count index, for example.

func (*NodePlannableResourceInstance) EvalTree added in v0.7.10 

func (n *NodePlannableResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NodePlannableResourceOrphan added in v0.7.10 

type NodePlannableResourceOrphan struct {
	*NodeAbstractResource
}

NodePlannableResourceOrphan represents a resource that is "applyable": it is ready to be applied and is represented by a diff.

func (*NodePlannableResourceOrphan) EvalTree added in v0.7.10 

func (n *NodePlannableResourceOrphan) EvalTree() EvalNode

GraphNodeEvalable

func (*NodePlannableResourceOrphan) Name added in v0.7.10 

func (n *NodePlannableResourceOrphan) Name() string

type NodeProvisioner added in v0.9.0 

type NodeProvisioner struct {
	NameValue string
	PathValue []string

	Config *config.ProviderConfig
}

NodeProvisioner represents a provider that has no associated operations. It registers all the common interfaces across operations for providers.

func (*NodeProvisioner) EvalTree added in v0.9.0 

func (n *NodeProvisioner) EvalTree() EvalNode

GraphNodeEvalable impl.

func (*NodeProvisioner) Name added in v0.9.0 

func (n *NodeProvisioner) Name() string

func (*NodeProvisioner) Path added in v0.9.0 

func (n *NodeProvisioner) Path() []string

GraphNodeSubPath

func (*NodeProvisioner) ProvisionerName added in v0.9.0 

func (n *NodeProvisioner) ProvisionerName() string

GraphNodeProvisioner

type NodeRefreshableDataResource added in v0.9.0 

type NodeRefreshableDataResource struct {
	*NodeAbstractCountResource
}

NodeRefreshableDataResource represents a resource that is "plannable": it is ready to be planned in order to create a diff.

func (*NodeRefreshableDataResource) DynamicExpand added in v0.9.0 

func (n *NodeRefreshableDataResource) DynamicExpand(ctx EvalContext) (*Graph, error)

GraphNodeDynamicExpandable

type NodeRefreshableDataResourceInstance added in v0.9.0 

type NodeRefreshableDataResourceInstance struct {
	*NodeAbstractResource
}

NodeRefreshableDataResourceInstance represents a _single_ resource instance that is refreshable.

func (*NodeRefreshableDataResourceInstance) EvalTree added in v0.9.0 

func (n *NodeRefreshableDataResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NodeRefreshableManagedResource added in v0.9.6 

type NodeRefreshableManagedResource struct {
	*NodeAbstractCountResource
}

NodeRefreshableManagedResource represents a resource that is expanabled into NodeRefreshableManagedResourceInstance. Resource count orphans are also added.

func (*NodeRefreshableManagedResource) DynamicExpand added in v0.9.6 

func (n *NodeRefreshableManagedResource) DynamicExpand(ctx EvalContext) (*Graph, error)

GraphNodeDynamicExpandable

type NodeRefreshableManagedResourceInstance added in v0.9.6 

type NodeRefreshableManagedResourceInstance struct {
	*NodeAbstractResource
}

NodeRefreshableManagedResourceInstance represents a resource that is "applyable": it is ready to be applied and is represented by a diff.

func (*NodeRefreshableManagedResourceInstance) DestroyAddr added in v0.9.6 

func (n *NodeRefreshableManagedResourceInstance) DestroyAddr() *ResourceAddress

GraphNodeDestroyer

func (*NodeRefreshableManagedResourceInstance) EvalTree added in v0.9.6 

func (n *NodeRefreshableManagedResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NodeRootVariable added in v0.7.8 

type NodeRootVariable struct {
	Config *config.Variable
}

NodeRootVariable represents a root variable input.

func (*NodeRootVariable) Name added in v0.7.8 

func (n *NodeRootVariable) Name() string

func (*NodeRootVariable) ReferenceableName added in v0.7.8 

func (n *NodeRootVariable) ReferenceableName() []string

GraphNodeReferenceable

type NodeValidatableResource added in v0.9.0 

type NodeValidatableResource struct {
	*NodeAbstractCountResource
}

NodeValidatableResource represents a resource that is used for validation only.

func (*NodeValidatableResource) DynamicExpand added in v0.9.0 

func (n *NodeValidatableResource) DynamicExpand(ctx EvalContext) (*Graph, error)

GraphNodeDynamicExpandable

func (*NodeValidatableResource) EvalTree added in v0.9.0 

func (n *NodeValidatableResource) EvalTree() EvalNode

GraphNodeEvalable

type NodeValidatableResourceInstance added in v0.9.0 

type NodeValidatableResourceInstance struct {
	*NodeAbstractResource
}

This represents a _single_ resource instance to validate.

func (*NodeValidatableResourceInstance) EvalTree added in v0.9.0 

func (n *NodeValidatableResourceInstance) EvalTree() EvalNode

GraphNodeEvalable

type NullGraphWalker added in v0.4.0 

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 added in v0.4.0 

func (NullGraphWalker) EnterEvalTree(v dag.Vertex, n EvalNode) EvalNode

func (NullGraphWalker) EnterPath added in v0.5.0 

func (NullGraphWalker) EnterPath([]string) EvalContext

func (NullGraphWalker) EnterVertex added in v0.4.0 

func (NullGraphWalker) EnterVertex(dag.Vertex)

func (NullGraphWalker) ExitEvalTree added in v0.4.0 

func (NullGraphWalker) ExitEvalTree(dag.Vertex, interface{}, error) error

func (NullGraphWalker) ExitPath added in v0.5.0 

func (NullGraphWalker) ExitPath([]string)

func (NullGraphWalker) ExitVertex added in v0.4.0 

func (NullGraphWalker) ExitVertex(dag.Vertex, error)

type OrphanOutputTransformer added in v0.7.8 

type OrphanOutputTransformer struct {
	Module *module.Tree // Root module
	State  *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 added in v0.7.8 

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

type OrphanResourceCountTransformer added in v0.7.10 

type OrphanResourceCountTransformer struct {
	Concrete ConcreteResourceNodeFunc

	Count int              // Actual count of the resource
	Addr  *ResourceAddress // Addr of the resource to look for orphans
	State *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 added in v0.7.10 

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

type OrphanResourceTransformer added in v0.7.10 

type OrphanResourceTransformer struct {
	Concrete ConcreteResourceNodeFunc

	// State is the global state. We require the global state to
	// properly find module orphans at our path.
	State *State

	// Module is the root module. We'll look up the proper configuration
	// using the graph path.
	Module *module.Tree
}

OrphanResourceTransformer is a GraphTransformer that adds resource orphans to the graph. A resource orphan is a resource that is represented in the state but not in the configuration.

This only adds orphans that have no representation at all in the configuration.

func (*OrphanResourceTransformer) Transform added in v0.7.10 

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

type OutputState added in v0.7.0 

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 added in v0.7.0 

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

Equal compares two OutputState structures for equality. nil values are considered equal.

func (*OutputState) Lock added in v0.7.3 

func (s *OutputState) Lock()

func (*OutputState) String added in v0.7.0 

func (s *OutputState) String() string

func (*OutputState) Unlock added in v0.7.3 

func (s *OutputState) Unlock()

type OutputTransformer added in v0.7.8 

type OutputTransformer struct {
	Module *module.Tree
}

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 added in v0.7.8 

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

type ParentProviderTransformer added in v0.7.8 

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.

func (*ParentProviderTransformer) Transform added in v0.7.8 

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

type Plan 

type Plan struct {
	Diff    *Diff
	Module  *module.Tree
	State   *State
	Vars    map[string]interface{}
	Targets []string

	TerraformVersion string
	ProviderSHA256s  map[string][]byte

	// Backend is the backend that this plan should use and store data with.
	Backend *BackendState
	// contains filtered or unexported fields
}

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) Context 

func (p *Plan) Context(opts *ContextOpts) (*Context, error)

Context returns a Context with the data encapsulated in this plan.

The following fields in opts are overridden by the plan: Config, Diff, State, Variables.

func (*Plan) String 

func (p *Plan) String() string

type PlanGraphBuilder added in v0.7.10 

type PlanGraphBuilder struct {
	// Module is the root module for the graph to build.
	Module *module.Tree

	// State is the current state
	State *State

	// Providers is the list of providers supported.
	Providers []string

	// Provisioners is the list of provisioners supported.
	Provisioners []string

	// Targets are resources to target
	Targets []string

	// 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 ConcreteResourceNodeFunc
	// 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 added in v0.7.10 

func (b *PlanGraphBuilder) Build(path []string) (*Graph, error)

See GraphBuilder

func (*PlanGraphBuilder) Steps added in v0.7.10 

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

See GraphBuilder

type PrefixUIInput added in v0.3.0 

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 added in v0.3.0 

func (i *PrefixUIInput) Input(opts *InputOpts) (string, error)

type ProviderTransformer added in v0.4.0 

type ProviderTransformer struct{}

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 added in v0.4.0 

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

type ProvisionerTransformer added in v0.4.0 

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 added in v0.4.0 

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

type ProvisionerUIOutput added in v0.3.0 

type ProvisionerUIOutput struct {
	Info  *InstanceInfo
	Type  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 added in v0.3.0 

func (o *ProvisionerUIOutput) Output(msg string)

type PruneProviderTransformer added in v0.4.0 

type PruneProviderTransformer struct{}

PruneProviderTransformer is a GraphTransformer that prunes all the providers that aren't needed from the graph. A provider is unneeded if no resource or module is using that provider.

func (*PruneProviderTransformer) Transform added in v0.4.0 

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

type ReferenceMap added in v0.7.8 

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 added in v0.7.8 

func NewReferenceMap(vs []dag.Vertex) *ReferenceMap

NewReferenceMap is used to create a new reference map for the given set of vertices.

func (*ReferenceMap) ReferencedBy added in v0.7.10 

func (m *ReferenceMap) ReferencedBy(v dag.Vertex) []dag.Vertex

ReferencedBy returns the list of vertices that reference the vertex passed in.

func (*ReferenceMap) References added in v0.7.8 

func (m *ReferenceMap) References(v dag.Vertex) ([]dag.Vertex, []string)

References returns the list of vertices that this vertex references along with any missing references.

type ReferenceTransformer added in v0.7.8 

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 added in v0.7.8 

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

type RefreshGraphBuilder added in v0.9.0 

type RefreshGraphBuilder struct {
	// Module is the root module for the graph to build.
	Module *module.Tree

	// State is the current state
	State *State

	// Providers is the list of providers supported.
	Providers []string

	// Targets are resources to target
	Targets []string

	// 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 added in v0.9.0 

func (b *RefreshGraphBuilder) Build(path []string) (*Graph, error)

See GraphBuilder

func (*RefreshGraphBuilder) Steps added in v0.9.0 

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

See GraphBuilder

type RemoteState added in v0.3.5 

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 added in v0.3.5 

func (r *RemoteState) Empty() bool

func (*RemoteState) Equals added in v0.3.5 

func (r *RemoteState) Equals(other *RemoteState) bool

func (*RemoteState) Lock added in v0.7.3 

func (s *RemoteState) Lock()

func (*RemoteState) Unlock added in v0.7.3 

func (s *RemoteState) Unlock()

type RemovableIfNotTargeted added in v0.7.0 

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 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
	Provisioners []*ResourceProvisionerConfig
	Flags        ResourceFlag
}

Resource encapsulates a resource, its configuration, its provider, its current state, and potentially a desired diff from the state it wants to reach.

type ResourceAddress added in v0.4.0 

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            config.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 ParseResourceAddress added in v0.4.0 

func ParseResourceAddress(s string) (*ResourceAddress, error)

func ParseResourceAddressForInstanceDiff added in v0.10.0 

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) Contains added in v0.10.0 

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 added in v0.6.12 

func (r *ResourceAddress) Copy() *ResourceAddress

Copy returns a copy of this ResourceAddress

func (*ResourceAddress) Equals added in v0.4.0 

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 added in v0.10.0 

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 added in v0.10.0 

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) MatchesConfig added in v0.10.0 

func (r *ResourceAddress) MatchesConfig(mod *module.Tree, rc *config.Resource) bool

MatchesConfig returns true if the receiver matches the given configuration resource within the given configuration module.

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) String added in v0.7.0 

func (r *ResourceAddress) String() string

String outputs the address that parses into this address.

func (*ResourceAddress) WholeModuleAddress added in v0.10.0 

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 added in v0.6.14 

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{}
	// contains filtered or unexported fields
}

ResourceConfig holds the configuration given for a resource. This is done instead of a raw `map[string]interface{}` type so that rich methods can be added to it to make dealing with it easier.

func NewResourceConfig 

func NewResourceConfig(c *config.RawConfig) *ResourceConfig

NewResourceConfig creates a new ResourceConfig from a config.RawConfig.

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 added in v0.7.5 

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 added in v0.7.5 

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 added in v0.5.0 

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 added in v0.3.0 

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 added in v0.4.0 

type ResourceCountTransformer struct {
	Concrete ConcreteResourceNodeFunc

	Count int
	Addr  *ResourceAddress
}

ResourceCountTransformer is a GraphTransformer that expands the count out for a specific resource.

This assumes that the count is already interpolated.

func (*ResourceCountTransformer) Transform added in v0.4.0 

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

type ResourceFlag added in v0.3.0 

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 ResourceProvider 

type ResourceProvider interface {

	// Input is called to ask the provider to ask the user for input
	// for completing the configuration if necesarry.
	//
	// This may or may not be called, so resource provider writers shouldn't
	// rely on this being available to set some default values for validate
	// later. Example of a situation where this wouldn't be called is if
	// the user is not using a TTY.
	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 added in v0.6.0 

type ResourceProviderCloser interface {
	Close() error
}

ResourceProviderCloser is an interface that providers that can close connections that aren't needed anymore must implement.

type ResourceProviderError added in v0.10.0 

type ResourceProviderError struct {
	Errors []error
}

ResourceProviderError may be returned when creating a Context if the required providers cannot be satisfied. This error can then be used to format a more useful message for the user.

func (*ResourceProviderError) Error added in v0.10.0 

func (e *ResourceProviderError) Error() string

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 added in v0.10.0 

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 added in v0.10.0 

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 added in v0.10.0 

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 added in v0.10.0 

func (f ResourceProviderResolverFunc) ResolveProviders(reqd discovery.PluginRequirements) (map[string]ResourceProviderFactory, []error)

ResolveProviders implements ResourceProviderResolver by calling the wrapped function.

type ResourceProvisioner 

type ResourceProvisioner interface {
	// 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 added in v0.6.0 

type ResourceProvisionerCloser interface {
	Close() error
}

ResourceProvisionerCloser is an interface that provisioners that can close connections that aren't needed anymore must implement.

type ResourceProvisionerConfig 

type ResourceProvisionerConfig struct {
	Type        string
	Provisioner ResourceProvisioner
	Config      *ResourceConfig
	RawConfig   *config.RawConfig
	ConnInfo    *config.RawConfig
}

ResourceProvisionerConfig is used to pair a provisioner with its provided configuration. This allows us to use singleton instances of each ResourceProvisioner and to keep the relevant configuration instead of instantiating a new Provisioner for each resource.

type ResourceProvisionerFactory 

type ResourceProvisionerFactory func() (ResourceProvisioner, error)

ResourceProvisionerFactory is a function type that creates a new instance of a resource provisioner.

type ResourceRefreshPlannableTransformer added in v0.9.6 

type ResourceRefreshPlannableTransformer struct {
	// The full global state.
	State *State
}

ResourceRefreshPlannableTransformer is a GraphTransformer that replaces any nodes that don't have state yet exist in config with NodePlannableResourceInstance.

This transformer is used when expanding count on managed resource nodes during the refresh phase to ensure that data sources that have interpolations that depend on resources existing in the graph can be walked properly.

func (*ResourceRefreshPlannableTransformer) Transform added in v0.9.6 

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

Transform implements GraphTransformer for ResourceRefreshPlannableTransformer.

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 added in v0.4.0 

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

Equal tests whether two ResourceStates are equal.

func (*ResourceState) Lock added in v0.7.3 

func (s *ResourceState) Lock()

func (*ResourceState) String added in v0.3.0 

func (s *ResourceState) String() string

func (*ResourceState) Taint added in v0.4.0 

func (s *ResourceState) Taint()

Taint marks a resource as tainted.

func (*ResourceState) Unlock added in v0.7.3 

func (s *ResourceState) Unlock()

func (*ResourceState) Untaint added in v0.6.13 

func (s *ResourceState) Untaint()

Untaint unmarks a resource as tainted.

type ResourceStateKey added in v0.6.10 

type ResourceStateKey struct {
	Name  string
	Type  string
	Mode  config.ResourceMode
	Index int
}

ResourceStateKey is a structured representation of the key used for the ModuleState.Resources mapping

func ParseResourceStateKey added in v0.6.10 

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 added in v0.6.10 

func (rsk *ResourceStateKey) Equal(other *ResourceStateKey) bool

Equal determines whether two ResourceStateKeys are the same

func (*ResourceStateKey) String added in v0.6.10 

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
}

ResourceType is a type of resource that a resource provider can manage.

type RootTransformer added in v0.4.0 

type RootTransformer struct{}

RootTransformer is a GraphTransformer that adds a root to the graph.

func (*RootTransformer) Transform added in v0.4.0 

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

type RootVariableTransformer added in v0.7.8 

type RootVariableTransformer struct {
	Module *module.Tree
}

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 added in v0.7.8 

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

type SemanticChecker added in v0.4.0 

type SemanticChecker interface {
	Check(*dag.Graph, dag.Vertex) error
}

SemanticChecker is the interface that semantic checks across the Terraform graph implement. Errors are accumulated. Even after an error is returned, child vertices in the graph will still be visited.

The graph should NOT be modified by the semantic checker.

The order in which vertices are visited is left unspecified, so the semantic checks should not rely on that.

type Semaphore added in v0.3.1 

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 added in v0.3.1 

func NewSemaphore(n int) Semaphore

NewSemaphore creates a semaphore that allows up to a given limit of simultaneous acquisitions

func (Semaphore) Acquire added in v0.3.1 

func (s Semaphore) Acquire()

Acquire is used to acquire an available slot. Blocks until available.

func (Semaphore) Release added in v0.3.1 

func (s Semaphore) Release()

Release is used to return a slot. Acquire must be called as a pre-condition.

func (Semaphore) TryAcquire added in v0.3.1 

func (s Semaphore) TryAcquire() bool

TryAcquire is used to do a non-blocking acquire. Returns a bool indicating success

type Shadow added in v0.7.8 

type Shadow interface {
	// CloseShadow tells the shadow that the REAL implementation is
	// complete. Therefore, any calls that would block should now return
	// immediately since no more changes will happen to the real side.
	CloseShadow() error

	// ShadowError returns the errors that the shadow has found.
	// This should be called AFTER CloseShadow and AFTER the shadow is
	// known to be complete (no more calls to it).
	ShadowError() error
}

Shadow is the interface that any "shadow" structures must implement.

A shadow structure is an interface implementation (typically) that shadows a real implementation and verifies that the same behavior occurs on both. The semantics of this behavior are up to the interface itself.

A shadow NEVER modifies real values or state. It must always be safe to use.

For example, a ResourceProvider shadow ensures that the same operations are done on the same resources with the same configurations.

The typical usage of a shadow following this interface is to complete the real operations, then call CloseShadow which tells the shadow that the real side is done. Then, once the shadow is also complete, call ShadowError to find any errors that may have been caught.

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 added in v0.3.5 

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 added in v0.7.0 

func ReadStateV2(jsonBytes []byte) (*State, error)

func ReadStateV3 added in v0.7.0 

func ReadStateV3(jsonBytes []byte) (*State, error)

func (*State) Add added in v0.7.0 

func (s *State) Add(fromAddrRaw string, toAddrRaw string, raw interface{}) error

Add adds the item in the state at the given address.

The item can be a ModuleState, ResourceState, or InstanceState. Depending on the item type, the address may or may not be valid. For example, a module cannot be moved to a resource address, however a resource can be moved to a module address (it retains the same name, under that resource).

The item can also be a []*ModuleState, which is the case for nested modules. In this case, Add will expect the zero-index to be the top-most module to add and will only nest children from there. For semantics, this is equivalent to module => module.

The full semantics of Add: 

                  ┌───────────────────┬───────────────────┬───────────────────┐
                  │  Module Address   │ Resource Address  │ Instance Address  │
┌─────────────────┼───────────────────┼───────────────────┼───────────────────┤
│   ModuleState   │         ✓         │         x         │         x         │
├─────────────────┼───────────────────┼───────────────────┼───────────────────┤
│  ResourceState  │         ✓         │         ✓         │      maybe*       │
├─────────────────┼───────────────────┼───────────────────┼───────────────────┤
│ Instance State  │         ✓         │         ✓         │         ✓         │
└─────────────────┴───────────────────┴───────────────────┴───────────────────┘

*maybe - Resources can be added at an instance address only if the resource 

represents a single instance (primary). Example:
"aws_instance.foo" can be moved to "aws_instance.bar.tainted"

func (*State) AddModule added in v0.3.0 

func (s *State) AddModule(path []string) *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 added in v0.7.1 

func (s *State) AddModuleState(mod *ModuleState)

AddModuleState insert this module state and override any existing ModuleState

func (*State) Children added in v0.3.0 

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 added in v0.7.0 

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 added in v0.4.0 

func (s *State) DeepCopy() *State

DeepCopy performs a deep copy of the state structure and returns a new structure.

func (*State) Empty added in v0.4.0 

func (s *State) Empty() bool

Empty returns true if the state is empty.

func (*State) EnsureHasLineage added in v0.7.0 

func (s *State) EnsureHasLineage()

func (*State) Equal added in v0.4.0 

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

Equal tests if one state is equal to another.

func (*State) FromFutureTerraform added in v0.7.0 

func (s *State) FromFutureTerraform() bool

FromFutureTerraform checks if this state was written by a Terraform version from the future.

func (*State) HasResources added in v0.7.6 

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) IncrementSerialMaybe added in v0.4.0 

func (s *State) IncrementSerialMaybe(other *State)

IncrementSerialMaybe increments the serial number of this state if it different from the other state.

func (*State) Init added in v0.7.1 

func (s *State) Init()

func (*State) IsRemote added in v0.4.0 

func (s *State) IsRemote() bool

IsRemote returns true if State represents a state that exists and is remote.

func (*State) Lock added in v0.7.3 

func (s *State) Lock()

func (*State) ModuleByPath added in v0.3.0 

func (s *State) ModuleByPath(path []string) *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) ModuleOrphans added in v0.4.0 

func (s *State) ModuleOrphans(path []string, c *config.Config) [][]string

ModuleOrphans returns all the module orphans in this state by returning their full paths. These paths can be used with ModuleByPath to return the actual state.

func (*State) Remove added in v0.7.0 

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 added in v0.3.0 

func (s *State) RootModule() *ModuleState

RootModule returns the ModuleState for the root module

func (*State) SameLineage added in v0.7.0 

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 added in v0.7.3 

func (s *State) Unlock()

func (*State) Validate added in v0.7.3 

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 added in v0.7.0 

type StateAgeComparison int
const (
	StateAgeEqual         StateAgeComparison = 0
	StateAgeReceiverNewer StateAgeComparison = 1
	StateAgeReceiverOlder StateAgeComparison = -1
)

type StateFilter added in v0.7.0 

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 added in v0.7.0 

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 added in v0.7.0 

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 added in v0.7.0 

func (r *StateFilterResult) String() string

type StateFilterResultSlice added in v0.7.0 

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 added in v0.7.0 

func (s StateFilterResultSlice) Len() int

func (StateFilterResultSlice) Less added in v0.7.0 

func (s StateFilterResultSlice) Less(i, j int) bool

func (StateFilterResultSlice) Swap added in v0.7.0 

func (s StateFilterResultSlice) Swap(i, j int)

type StateTransformer added in v0.7.8 

type StateTransformer struct {
	Concrete ConcreteResourceNodeFunc

	State *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 added in v0.7.8 

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

type TargetsTransformer added in v0.4.0 

type TargetsTransformer struct {
	// List of targeted resource names specified by the user
	Targets []string

	// List of parsed targets, provided by callers like ResourceCountTransform
	// that already have the targets parsed
	ParsedTargets []ResourceAddress

	// 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 added in v0.4.0 

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

type TransitiveReductionTransformer added in v0.4.0 

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 added in v0.4.0 

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

type UIInput added in v0.3.0 

type UIInput interface {
	Input(*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 added in v0.3.0 

type UIOutput interface {
	Output(string)
}

UIOutput is the interface that must be implemented to output data to the end user.

type UnorderedSemanticCheckRunner added in v0.4.0 

type UnorderedSemanticCheckRunner struct {
	Checks []SemanticChecker
}

UnorderedSemanticCheckRunner is an implementation of GraphSemanticChecker that runs a list of SemanticCheckers against the vertices of the graph in no specified order.

func (*UnorderedSemanticCheckRunner) Check added in v0.4.0 

func (sc *UnorderedSemanticCheckRunner) Check(g *dag.Graph) error

type VertexTransformer added in v0.4.0 

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 added in v0.4.0 

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

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