sort static tags by desc time

cmd/static.go

@@ -10,7 +10,9 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"sort"
 	"strings"
+	"time"
 
 	"github.com/spf13/cobra"
 	"gocloud.dev/blob"
@@ -39,11 +41,6 @@ type RegistryPlatform struct {
 	OS           string `json:"os"`
 }
 
-type Manifest struct {
-	Name string   `json:"name"`
-	Tags []string `json:"tags"`
-}
-
 //---
 //--- Collect data on the filesystem
 type Platform struct {
@@ -137,13 +134,6 @@ func NewArtifact(nametag, path string) (Artifact, error) {
 	return ar, nil
 }
 
-func (a *Artifact) UpdateManifest() Manifest {
-	return Manifest{
-		Name: a.Name,
-		Tags: []string{a.Tag}, //@FIXME we must fetch the other tags of the repo
-	}
-}
-
 func (a *Artifact) BuildTag() Tag {
 	t := Tag{Flavors: []Flavor{}}
 	for _, p := range a.Platforms {
@@ -186,20 +176,100 @@ func (a *Artifact) Upload(buck *blob.Bucket) error {
 		return err
 	}
 	fmt.Printf("tag -> %s\n", remoteTagPath)
+	return nil
+}
 
-	// Update manifest
+//--- Manage uploaded artifacts, list them, etc.
-	manifest := a.UpdateManifest()
+type ArtifactDescriptor struct {
-	mjson, err := json.Marshal(manifest)
+	Tag string
+	Date time.Time
+}
+type ArtifactManager struct {
+	name string
+	buck *blob.Bucket
+	artifacts []ArtifactDescriptor
+}
+
+func NewArtifactManager(buck *blob.Bucket, name string) *ArtifactManager {
+	return &ArtifactManager{
+		buck: buck,
+		name: name,
+	}
+}
+
+
+func (am *ArtifactManager) Scan() error {
+	iter := am.buck.List(&blob.ListOptions{
+		Prefix:    fmt.Sprintf("df-dist-v1/%s/", am.name),
+		Delimiter: "/",
+	})
+
+	for {
+		obj, err := iter.Next(context.Background())
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+		if obj.IsDir {
+			continue
+		}
+		ksplit := strings.Split(obj.Key, "/")
+		if len(ksplit) < 1 {
+			return errors.New(fmt.Sprintf("Invalid key name %s", obj.Key))
+		}
+		fname := ksplit[len(ksplit)-1]
+
+		ad := ArtifactDescriptor {
+			Tag: fname,
+			Date: obj.ModTime,
+		}
+
+		am.artifacts = append(am.artifacts, ad)
+	}
+	return nil
+}
+
+func (am *ArtifactManager) TagList() TagList {
+	// Sort by date desc
+	sort.Slice(am.artifacts, func(i, j int) bool {
+		return am.artifacts[i].Date.After(am.artifacts[j].Date)
+	})
+
+	// Build tagList
+	tagList := TagList {
+		Name: am.name,
+	}
+	for _, art := range am.artifacts {
+		tagList.Tags = append(tagList.Tags, art.Tag)
+	}
+	return tagList
+}
+
+
+func (am *ArtifactManager) UpdateTagList() error {
+	fmt.Printf("--- update taglist ---\n")
+
+	err := am.Scan()
 	if err != nil {
 		return err
 	}
 
-	remoteManifestPath := path.Join(prefix, a.Name)
+	tagList := am.TagList()
-	if err := NewUploadFromByte(buck, mjson).UploadTo(remoteManifestPath); err != nil {
+	fmt.Printf("computed tag list: %v\n", tagList)
+
+	txt, err := json.Marshal(tagList)
+	if err != nil {
 		return err
 	}
-	fmt.Printf("manifest -> %s\n", remoteManifestPath)
 
+	dst := path.Join("df-dist-v1", am.name)
+	err = NewUploadFromByte(am.buck, txt).ContentType("application/json").UploadTo(dst)
+	if err != nil {
+		return err
+	}
+	fmt.Printf("taglist -> %s\n", dst)
 	return nil
 }
 
@@ -313,6 +383,14 @@ var publishCmd = &cobra.Command{
 			os.Exit(1)
 		}
 
+		// update tag list
+		am := NewArtifactManager(bucket, art.Name)
+		err = am.UpdateTagList()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
 		fmt.Printf("✅ push succeeded\n")
 	},
 }