packer-cn/hcl2template/types.build.post-processor.go

88 lines
2.5 KiB
Go

package hcl2template
import (
"fmt"
"github.com/hashicorp/hcl/v2"
"github.com/hashicorp/hcl/v2/gohcl"
"github.com/hashicorp/packer/packer"
)
// ProvisionerBlock references a detected but unparsed post processor
type PostProcessorBlock struct {
PType string
PName string
OnlyExcept OnlyExcept
HCL2Ref
}
func (p *PostProcessorBlock) String() string {
return fmt.Sprintf(buildPostProcessorLabel+"-block %q %q", p.PType, p.PName)
}
func (p *Parser) decodePostProcessor(block *hcl.Block) (*PostProcessorBlock, hcl.Diagnostics) {
var b struct {
Name string `hcl:"name,optional"`
Only []string `hcl:"only,optional"`
Except []string `hcl:"except,optional"`
Rest hcl.Body `hcl:",remain"`
}
diags := gohcl.DecodeBody(block.Body, nil, &b)
if diags.HasErrors() {
return nil, diags
}
postProcessor := &PostProcessorBlock{
PType: block.Labels[0],
PName: b.Name,
OnlyExcept: OnlyExcept{Only: b.Only, Except: b.Except},
HCL2Ref: newHCL2Ref(block, b.Rest),
}
diags = diags.Extend(postProcessor.OnlyExcept.Validate())
if diags.HasErrors() {
return nil, diags
}
if !p.PostProcessorsSchemas.Has(postProcessor.PType) {
diags = append(diags, &hcl.Diagnostic{
Summary: fmt.Sprintf("Unknown "+buildPostProcessorLabel+" type %q", postProcessor.PType),
Subject: block.LabelRanges[0].Ptr(),
Detail: fmt.Sprintf("known "+buildPostProcessorLabel+"s: %v", p.PostProcessorsSchemas.List()),
Severity: hcl.DiagError,
})
return nil, diags
}
return postProcessor, diags
}
func (cfg *PackerConfig) startPostProcessor(source SourceBlock, pp *PostProcessorBlock, ectx *hcl.EvalContext, generatedVars map[string]string) (packer.PostProcessor, hcl.Diagnostics) {
// ProvisionerBlock represents a detected but unparsed provisioner
var diags hcl.Diagnostics
postProcessor, err := cfg.postProcessorsSchemas.Start(pp.PType)
if err != nil {
diags = append(diags, &hcl.Diagnostic{
Summary: fmt.Sprintf("Failed loading %s", pp.PType),
Subject: pp.DefRange.Ptr(),
Detail: err.Error(),
})
return nil, diags
}
flatProvisinerCfg, moreDiags := decodeHCL2Spec(pp.Rest, ectx, postProcessor)
diags = append(diags, moreDiags...)
err = postProcessor.Configure(source.builderVariables(), flatProvisinerCfg, generatedVars)
if err != nil {
diags = append(diags, &hcl.Diagnostic{
Severity: hcl.DiagError,
Summary: fmt.Sprintf("Failed preparing %s", pp),
Detail: err.Error(),
Subject: pp.DefRange.Ptr(),
})
return nil, diags
}
return postProcessor, diags
}