post-processor/manifest: add artifact file size to manifest

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>

post-processor/manifest/artifact.go

@@ -4,13 +4,18 @@ import "fmt"
 
 const BuilderId = "packer.post-processor.manifest"
 
+type ArtifactFile struct {
+	Name string `json:"name"`
+	Size int64  `json:"size"`
+}
+
 type Artifact struct {
-	BuildName     string   `json:"name"`
-	BuilderType   string   `json:"builder_type"`
-	BuildTime     int64    `json:"build_time"`
-	ArtifactFiles []string `json:"files"`
-	ArtifactId    string   `json:"artifact_id"`
-	PackerRunUUID string   `json:"packer_run_uuid"`
+	BuildName     string         `json:"name"`
+	BuilderType   string         `json:"builder_type"`
+	BuildTime     int64          `json:"build_time"`
+	ArtifactFiles []ArtifactFile `json:"files"`
+	ArtifactId    string         `json:"artifact_id"`
+	PackerRunUUID string         `json:"packer_run_uuid"`
 }
 
 func (a *Artifact) BuilderId() string {
@@ -18,7 +23,11 @@ func (a *Artifact) BuilderId() string {
 }
 
 func (a *Artifact) Files() []string {
-	return a.ArtifactFiles
+	var files []string
+	for _, af := range a.ArtifactFiles {
+		files = append(files, af.Name)
+	}
+	return files
 }
 
 func (a *Artifact) Id() string {

post-processor/manifest/post-processor.go

@@ -54,9 +54,16 @@ func (p *PostProcessor) PostProcess(ui packer.Ui, source packer.Artifact) (packe
 	artifact := &Artifact{}
 
 	var err error
+	var fi os.FileInfo
 
 	// Create the current artifact.
-	artifact.ArtifactFiles = source.Files()
+	for _, name := range source.Files() {
+		if fi, err = os.Stat(name); err == nil {
+			artifact.ArtifactFiles = append(artifact.ArtifactFiles, ArtifactFile{Name: name, Size: fi.Size()})
+		} else {
+			artifact.ArtifactFiles = append(artifact.ArtifactFiles, ArtifactFile{Name: name})
+		}
+	}
 	artifact.ArtifactId = source.Id()
 	artifact.BuilderType = p.config.PackerBuilderType
 	artifact.BuildName = p.config.PackerBuildName