hcl2template

package
v1.6.2 Latest Latest
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 Go to latest Published: Aug 27, 2020 License: MPL-2.0 Imports: 31 Imported by: 0

Documentation

Overview

Package hcl2template defines code to parse hcl2 template files.

In order to configure a packer builder,provisioner, and post processor.

Checkout the files in testdata/complete/ to see what a packer config could look like.

Code generated by "mapstructure-to-hcl2 -type KeyValue,KeyValues,KeyValueFilter,NameValue,NameValues,NameValueFilter"; DO NOT EDIT.

Index

Constants

View Source 
const VarEnvPrefix = "PKR_VAR_"

Prefix your environment variables with VarEnvPrefix so that Packer can see them.

Variables

View Source 
var PackerConsoleHelp = strings.TrimSpace(`
Packer console HCL2 Mode.
The Packer console allows you to experiment with Packer interpolations.
You may access variables and functions in the Packer config you called the
console with.

Type in the interpolation to test and hit <enter> to see the result.

"upper(var.foo.id)" would evaluate to the ID of "foo" and uppercase is, if it
exists in your config file.

"variables" will dump all available variables and their values.

To exit the console, type "exit" and hit <enter>, or use Control-C.

/!\ It is not possible to use go templating interpolation like "{{timestamp}}"
with in HCL2 mode.
`)

Functions

func Functions added in v1.5.2 

func Functions(basedir string) map[string]function.Function

Functions returns the set of functions that should be used to when evaluating expressions in the receiving scope.

basedir is used with file functions and allows a user to reference a file using local path. Usually basedir is the directory in which the config file is located

func GetHCL2Files added in v1.5.2 

func GetHCL2Files(filename, hclSuffix, jsonSuffix string) (hclFiles, jsonFiles []string, diags hcl.Diagnostics)

GetHCL2Files returns two slices of json formatted and hcl formatted files, hclSuffix and jsonSuffix tell which file is what. Filename can be a folder or a file.

When filename is a folder all files of folder matching the suffixes will be returned. Otherwise if filename references a file and filename matches one of the suffixes it is returned in the according slice.

func PrintableCtyValue added in v1.6.0 

func PrintableCtyValue(v cty.Value) string

Types

type BuildBlock added in v1.5.0 

type BuildBlock struct {
	// Name is a string representing the named build to show in the logs
	Name string

	// A description of what this build does, it could be used in a inspect
	// call for example.
	Description string

	// Sources is the list of sources that we want to start in this build block.
	Sources []SourceRef

	// ProvisionerBlocks references a list of HCL provisioner block that will
	// will be ran against the sources.
	ProvisionerBlocks []*ProvisionerBlock

	// PostProcessorLists references the lists of lists of HCL post-processors
	// block that will be run against the artifacts from the provisioning
	// steps.
	PostProcessorsLists [][]*PostProcessorBlock

	HCL2Ref HCL2Ref
}

BuildBlock references an HCL 'build' block and it content, for example : 

build {
	sources = [
		...
	]
	provisioner "" { ... }
	post-processor "" { ... }
}

type Builds 

type Builds []*BuildBlock

type Decodable 

type Decodable interface {
	ConfigSpec() hcldec.ObjectSpec
}

Decodable structs are structs that can tell their hcl2 ObjectSpec; this config spec will be passed to hcldec.Decode and the result will be a cty.Value. This Value can then be applied on the said struct.

type FlatKeyValue added in v1.5.6 

type FlatKeyValue struct {
	Key   *string `cty:"key" hcl:"key"`
	Value *string `cty:"value" hcl:"value"`
}

FlatKeyValue is an auto-generated flat version of KeyValue. Where the contents of a field with a `mapstructure:,squash` tag are bubbled up.

func (*FlatKeyValue) HCL2Spec added in v1.5.6 

func (*FlatKeyValue) HCL2Spec() map[string]hcldec.Spec

HCL2Spec returns the hcl spec of a KeyValue. This spec is used by HCL to read the fields of KeyValue. The decoded values from this spec will then be applied to a FlatKeyValue.

type FlatKeyValueFilter added in v1.5.6 

type FlatKeyValueFilter struct {
	Filters map[string]string `cty:"filters" hcl:"filters"`
	Filter  []FlatKeyValue    `cty:"filter" hcl:"filter"`
}

FlatKeyValueFilter is an auto-generated flat version of KeyValueFilter. Where the contents of a field with a `mapstructure:,squash` tag are bubbled up.

func (*FlatKeyValueFilter) HCL2Spec added in v1.5.6 

func (*FlatKeyValueFilter) HCL2Spec() map[string]hcldec.Spec

HCL2Spec returns the hcl spec of a KeyValueFilter. This spec is used by HCL to read the fields of KeyValueFilter. The decoded values from this spec will then be applied to a FlatKeyValueFilter.

type FlatNameValue added in v1.5.5 

type FlatNameValue struct {
	Name  *string `cty:"name" hcl:"name"`
	Value *string `cty:"value" hcl:"value"`
}

FlatNameValue is an auto-generated flat version of NameValue. Where the contents of a field with a `mapstructure:,squash` tag are bubbled up.

func (*FlatNameValue) HCL2Spec added in v1.5.5 

func (*FlatNameValue) HCL2Spec() map[string]hcldec.Spec

HCL2Spec returns the hcl spec of a NameValue. This spec is used by HCL to read the fields of NameValue. The decoded values from this spec will then be applied to a FlatNameValue.

type FlatNameValueFilter added in v1.5.6 

type FlatNameValueFilter struct {
	Filters map[string]string `cty:"filters" hcl:"filters"`
	Filter  []FlatNameValue   `cty:"filter" hcl:"filter"`
}

FlatNameValueFilter is an auto-generated flat version of NameValueFilter. Where the contents of a field with a `mapstructure:,squash` tag are bubbled up.

func (*FlatNameValueFilter) HCL2Spec added in v1.5.6 

func (*FlatNameValueFilter) HCL2Spec() map[string]hcldec.Spec

HCL2Spec returns the hcl spec of a NameValueFilter. This spec is used by HCL to read the fields of NameValueFilter. The decoded values from this spec will then be applied to a FlatNameValueFilter.

type HCL2PostProcessor added in v1.6.1 

type HCL2PostProcessor struct {
	PostProcessor packer.PostProcessor
	// contains filtered or unexported fields
}

HCL2PostProcessor has a reference to the part of the HCL2 body where it is defined, allowing to completely reconfigure the PostProcessor right before calling PostProcess: with contextual variables. This permits using "${build.ID}" values for example.

func (*HCL2PostProcessor) ConfigSpec added in v1.6.1 

func (p *HCL2PostProcessor) ConfigSpec() hcldec.ObjectSpec

func (*HCL2PostProcessor) Configure added in v1.6.1 

func (p *HCL2PostProcessor) Configure(args ...interface{}) error

func (*HCL2PostProcessor) HCL2Prepare added in v1.6.1 

func (p *HCL2PostProcessor) HCL2Prepare(buildVars map[string]interface{}) error

func (*HCL2PostProcessor) PostProcess added in v1.6.1 

func (p *HCL2PostProcessor) PostProcess(ctx context.Context, ui packer.Ui, artifact packer.Artifact) (packer.Artifact, bool, bool, error)

type HCL2Provisioner added in v1.6.1 

type HCL2Provisioner struct {
	Provisioner packer.Provisioner
	// contains filtered or unexported fields
}

HCL2Provisioner has a reference to the part of the HCL2 body where it is defined, allowing to completely reconfigure the Provisioner right before calling Provision: with contextual variables. This permits using "${build.ID}" values for example.

func (*HCL2Provisioner) ConfigSpec added in v1.6.1 

func (p *HCL2Provisioner) ConfigSpec() hcldec.ObjectSpec

func (*HCL2Provisioner) HCL2Prepare added in v1.6.1 

func (p *HCL2Provisioner) HCL2Prepare(buildVars map[string]interface{}) error

func (*HCL2Provisioner) Prepare added in v1.6.1 

func (p *HCL2Provisioner) Prepare(args ...interface{}) error

func (*HCL2Provisioner) Provision added in v1.6.1 

func (p *HCL2Provisioner) Provision(ctx context.Context, ui packer.Ui, c packer.Communicator, vars map[string]interface{}) error

type HCL2Ref 

type HCL2Ref struct {
	// references
	DefRange     hcl.Range
	TypeRange    hcl.Range
	LabelsRanges []hcl.Range

	// remainder of unparsed body
	Rest hcl.Body
}

HCL2Ref references to the source definition in configuration text file. It is used to tell were something was wrong, - like a warning or an error - long after it was parsed; allowing to give pointers as to where change/fix things in a file.

type KeyValue added in v1.5.6 

type KeyValue struct {
	Key   string
	Value string
}

func (*KeyValue) FlatMapstructure added in v1.5.6 

func (*KeyValue) FlatMapstructure() interface{ HCL2Spec() map[string]hcldec.Spec }

FlatMapstructure returns a new FlatKeyValue. FlatKeyValue is an auto-generated flat version of KeyValue. Where the contents a fields with a `mapstructure:,squash` tag are bubbled up.

type KeyValueFilter added in v1.5.6 

type KeyValueFilter struct {
	Filters map[string]string
	Filter  KeyValues
}

func (*KeyValueFilter) Empty added in v1.5.6 

func (kvf *KeyValueFilter) Empty() bool

func (*KeyValueFilter) FlatMapstructure added in v1.5.6 

func (*KeyValueFilter) FlatMapstructure() interface{ HCL2Spec() map[string]hcldec.Spec }

FlatMapstructure returns a new FlatKeyValueFilter. FlatKeyValueFilter is an auto-generated flat version of KeyValueFilter. Where the contents a fields with a `mapstructure:,squash` tag are bubbled up.

func (*KeyValueFilter) Prepare added in v1.5.6 

func (kvf *KeyValueFilter) Prepare() []error

type KeyValues added in v1.5.6 

type KeyValues []KeyValue

func (KeyValues) CopyOn added in v1.5.6 

func (kvs KeyValues) CopyOn(to *map[string]string) []error

type LocalBlock added in v1.6.1 

type LocalBlock struct {
	Name string
	Expr hcl.Expression
}

Local represents a single entry from a "locals" block in a module or file. The "locals" block itself is not represented, because it serves only to provide context for us to interpret its contents.

type NameValue added in v1.5.5 

type NameValue struct {
	Name  string
	Value string
}

func (*NameValue) FlatMapstructure added in v1.5.5 

func (*NameValue) FlatMapstructure() interface{ HCL2Spec() map[string]hcldec.Spec }

FlatMapstructure returns a new FlatNameValue. FlatNameValue is an auto-generated flat version of NameValue. Where the contents a fields with a `mapstructure:,squash` tag are bubbled up.

type NameValueFilter added in v1.5.6 

type NameValueFilter struct {
	Filters map[string]string
	Filter  NameValues
}

func (*NameValueFilter) Empty added in v1.5.6 

func (nvf *NameValueFilter) Empty() bool

func (*NameValueFilter) FlatMapstructure added in v1.5.6 

func (*NameValueFilter) FlatMapstructure() interface{ HCL2Spec() map[string]hcldec.Spec }

FlatMapstructure returns a new FlatNameValueFilter. FlatNameValueFilter is an auto-generated flat version of NameValueFilter. Where the contents a fields with a `mapstructure:,squash` tag are bubbled up.

func (*NameValueFilter) Prepare added in v1.5.6 

func (nvf *NameValueFilter) Prepare() []error

type NameValues added in v1.5.5 

type NameValues []NameValue

func (NameValues) CopyOn added in v1.5.5 

func (nvs NameValues) CopyOn(to *map[string]string) []error

type OnlyExcept added in v1.6.0 

type OnlyExcept struct {
	Only   []string `json:"only,omitempty"`
	Except []string `json:"except,omitempty"`
}

OnlyExcept is a struct that is meant to be embedded that contains the logic required for "only" and "except" meta-parameters.

func (*OnlyExcept) Skip added in v1.6.0 

func (o *OnlyExcept) Skip(n string) bool

Skip says whether or not to skip the build with the given name.

func (*OnlyExcept) Validate added in v1.6.0 

func (o *OnlyExcept) Validate() hcl.Diagnostics

Validate validates that the OnlyExcept settings are correct for a thing.

type PackerConfig 

type PackerConfig struct {
	// Directory where the config files are defined
	Basedir string
	// directory Packer was called from
	Cwd string

	// Available Source blocks
	Sources map[SourceRef]SourceBlock

	// InputVariables and LocalVariables are the list of defined input and
	// local variables. They are of the same type but are not used in the same
	// way. Local variables will not be decoded from any config file, env var,
	// or ect. Like the Input variables will.
	InputVariables Variables
	LocalVariables Variables

	LocalBlocks []*LocalBlock

	ValidationOptions

	// Builds is the list of Build blocks defined in the config files.
	Builds Builds
	// contains filtered or unexported fields
}

PackerConfig represents a loaded Packer HCL config. It will contain references to all possible blocks of the allowed configuration.

func (*PackerConfig) EvalContext added in v1.5.2 

func (cfg *PackerConfig) EvalContext(variables map[string]cty.Value) *hcl.EvalContext

EvalContext returns the *hcl.EvalContext that will be passed to an hcl decoder in order to tell what is the actual value of a var or a local and the list of defined functions.

func (*PackerConfig) EvaluateExpression added in v1.6.0 

func (p *PackerConfig) EvaluateExpression(line string) (out string, exit bool, diags hcl.Diagnostics)

func (*PackerConfig) FixConfig added in v1.6.0 

func (p *PackerConfig) FixConfig(_ packer.FixConfigOptions) (diags hcl.Diagnostics)

func (*PackerConfig) GetBuilds added in v1.6.0 

func (cfg *PackerConfig) GetBuilds(opts packer.GetBuildsOptions) ([]packer.Build, hcl.Diagnostics)

GetBuilds returns a list of packer Build based on the HCL2 parsed build blocks. All Builders, Provisioners and Post Processors will be started and configured.

func (*PackerConfig) Initialize added in v1.6.1 

func (cfg *PackerConfig) Initialize() hcl.Diagnostics

func (*PackerConfig) InspectConfig added in v1.6.1 

func (p *PackerConfig) InspectConfig(opts packer.InspectConfigOptions) int

type Parser 

type Parser struct {
	*hclparse.Parser

	BuilderSchemas packer.BuilderStore

	ProvisionersSchemas packer.ProvisionerStore

	PostProcessorsSchemas packer.PostProcessorStore
}

Parser helps you parse HCL folders. It will parse an hcl file or directory and start builders, provisioners and post-processors to configure them with the parsed HCL and then return a []packer.Build. Packer will use that list of Builds to run everything in order.

func (*Parser) Parse 

func (p *Parser) Parse(filename string, varFiles []string, argVars map[string]string) (*PackerConfig, hcl.Diagnostics)

Parse will Parse all HCL files in filename. Path can be a folder or a file.

Parse will first Parse variables and then the rest; so that interpolation can happen.

Parse returns a PackerConfig that contains configuration layout of a packer build; sources(builders)/provisioners/posts-processors will not be started and their contents wont be verified; Most syntax errors will cause an error.

type PostProcessorBlock added in v1.5.0 

type PostProcessorBlock struct {
	PType             string
	PName             string
	OnlyExcept        OnlyExcept
	KeepInputArtifact *bool

	HCL2Ref
}

ProvisionerBlock references a detected but unparsed post processor

func (*PostProcessorBlock) String added in v1.5.2 

func (p *PostProcessorBlock) String() string

type ProvisionerBlock added in v1.5.0 

type ProvisionerBlock struct {
	PType       string
	PName       string
	PauseBefore time.Duration
	MaxRetries  int
	Timeout     time.Duration
	Override    map[string]interface{}
	OnlyExcept  OnlyExcept
	HCL2Ref
}

ProvisionerBlock references a detected but unparsed provisioner

func (*ProvisionerBlock) String added in v1.5.2 

func (p *ProvisionerBlock) String() string

type SourceBlock added in v1.5.2 

type SourceBlock struct {
	// Type of source; ex: virtualbox-iso
	Type string
	// Given name; if any
	Name string

	// LocalName can be set in a singular source block from a build block, it
	// allows to give a special name to a build in the logs.
	LocalName string
	// contains filtered or unexported fields
}

SourceBlock references an HCL 'source' block.

func (*SourceBlock) Ref added in v1.5.2 

func (source *SourceBlock) Ref() SourceRef

func (*SourceBlock) String added in v1.6.1 

func (b *SourceBlock) String() string

type SourceRef 

type SourceRef struct {
	Type string
	Name string

	// LocalName can be set in a singular source block from a build block, it
	// allows to give a special name to a build in the logs.
	LocalName string
	// contains filtered or unexported fields
}
var NoSource SourceRef

NoSource is the zero value of sourceRef, representing the absense of an source.

func (*SourceRef) Ref added in v1.6.0 

func (r *SourceRef) Ref() SourceRef

the 'addition' field makes of ref a different entry in the sources map, so Ref is here to make sure only one is returned.

func (SourceRef) String 

func (r SourceRef) String() string

type ValidationOptions added in v1.5.5 

type ValidationOptions struct {
	Strict bool
}

type Variable added in v1.5.2 

type Variable struct {
	// CmdValue, VarfileValue, EnvValue, DefaultValue are possible values of
	// the variable; The first value set from these will be the one used. If
	// none is set; an error will be returned if a user tries to use the
	// Variable.
	CmdValue     cty.Value
	VarfileValue cty.Value
	EnvValue     cty.Value
	DefaultValue cty.Value

	// Cty Type of the variable. If the default value or a collected value is
	// not of this type nor can be converted to this type an error diagnostic
	// will show up. This allows us to assume that values are valid later in
	// code.
	//
	// When a default value - and no type - is passed in the variable
	// declaration, the type of the default variable will be used. This will
	// allow to ensure that users set this variable correctly.
	Type cty.Type
	// Common name of the variable
	Name string
	// Description of the variable
	Description string
	// When Sensitive is set to true Packer will try it best to hide/obfuscate
	// the variable from the output stream. By replacing the text.
	Sensitive bool

	Range hcl.Range
}

func (*Variable) GoString added in v1.5.2 

func (v *Variable) GoString() string

func (*Variable) Value added in v1.5.2 

func (v *Variable) Value() (cty.Value, *hcl.Diagnostic)

type Variables added in v1.5.2 

type Variables map[string]*Variable

func (Variables) Values added in v1.5.2 

func (variables Variables) Values() (map[string]cty.Value, hcl.Diagnostics)

Source Files

View all Source files

Directories

Path Synopsis
Code generated by "mapstructure-to-hcl2 -type MockConfig,NestedMockConfig,MockTag"; DO NOT EDIT.
 Code generated by "mapstructure-to-hcl2 -type MockConfig,NestedMockConfig,MockTag"; DO NOT EDIT.
Package repl provides the structs and functions necessary to run REPL for HCL2.
 Package repl provides the structs and functions necessary to run REPL for HCL2.

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