package hcl2template import ( "fmt" "github.com/hashicorp/hcl/v2" "github.com/hashicorp/packer/packer" ) // SourceBlock references an HCL 'source' block. type SourceBlock struct { // Type of source; ex: virtualbox-iso Type string // Given name; if any Name string block *hcl.Block } func (p *Parser) decodeSource(block *hcl.Block) (*SourceBlock, hcl.Diagnostics) { source := &SourceBlock{ Type: block.Labels[0], Name: block.Labels[1], block: block, } var diags hcl.Diagnostics if !p.BuilderSchemas.Has(source.Type) { diags = append(diags, &hcl.Diagnostic{ Summary: "Unknown " + buildSourceLabel + " type " + source.Type, Subject: block.LabelRanges[0].Ptr(), Detail: fmt.Sprintf("known builders: %v", p.BuilderSchemas.List()), Severity: hcl.DiagError, }) return nil, diags } return source, diags } func (p *Parser) startBuilder(source *SourceBlock, ectx *hcl.EvalContext) (packer.Builder, hcl.Diagnostics, []string) { var diags hcl.Diagnostics builder, err := p.BuilderSchemas.Start(source.Type) if err != nil { diags = append(diags, &hcl.Diagnostic{ Summary: "Failed to load " + sourceLabel + " type", Detail: err.Error(), Subject: &source.block.LabelRanges[0], }) return builder, diags, nil } decoded, moreDiags := decodeHCL2Spec(source.block.Body, ectx, builder) diags = append(diags, moreDiags...) if moreDiags.HasErrors() { return nil, diags, nil } generatedVars, warning, err := builder.Prepare(source.builderVariables(), decoded) moreDiags = warningErrorsToDiags(source.block, warning, err) diags = append(diags, moreDiags...) return builder, diags, generatedVars } func (source *SourceBlock) builderVariables() map[string]string { return map[string]string{ "packer_build_name": source.Name, "packer_builder_type": source.Type, } } func (source *SourceBlock) Ref() SourceRef { return SourceRef{ Type: source.Type, Name: source.Name, } } type SourceRef struct { Type string Name string } // NoSource is the zero value of sourceRef, representing the absense of an // source. var NoSource SourceRef func (r SourceRef) String() string { return fmt.Sprintf("%s.%s", r.Type, r.Name) }