feat(timestamps): add to dir and file meta (#24)

The mapping is not exact and is to the best possible match.

- For the mounted root dir, it uses the GitHub repo updated time
- For release dirs, it uses the GitHub release published time
- For release asset files, it uses asset updated time

Bump version to 0.1.3 for release.

ghafs.go

@@ -45,9 +45,17 @@ func (g ghaFS) Root() (fs.Node, error) {
 	return root{mgmt: g.mgmt, token: g.token}, nil
 }
 
-func (root) Attr(ctx context.Context, a *fuse.Attr) error {
+func (r root) Attr(ctx context.Context, a *fuse.Attr) error {
 	a.Inode = 1
 	a.Mode = os.ModeDir | 0775
+
+	cmaTime := r.mgmt.repo.GetUpdatedAt().Time
+	a.Ctime = cmaTime
+	a.Mtime = cmaTime
+	a.Atime = cmaTime
+
+	a.Crtime = r.mgmt.repo.GetCreatedAt().Time
+
 	return nil
 }
 
@@ -80,6 +88,15 @@ func (r root) Lookup(ctx context.Context, name string) (fs.Node, error) {
 func (t tagDir) Attr(ctx context.Context, a *fuse.Attr) error {
 	a.Inode = uint64(t.assets.release.GetID())
 	a.Mode = os.ModeDir | 0775
+
+	// GitHub release only keeps track of Created (tag creation) and Published (release published) timestamps
+	// Since we are not interested in the tag, and only in the release, we use the published timestamp
+	cmaTime := t.assets.release.GetPublishedAt().Time
+	a.Ctime = cmaTime
+	a.Mtime = cmaTime
+	a.Atime = cmaTime
+	a.Crtime = cmaTime
+
 	return nil
 }
 
@@ -112,6 +129,18 @@ func (f assetFile) Attr(ctx context.Context, a *fuse.Attr) error {
 	a.Inode = uint64(f.asset.GetID())
 	a.Mode = 0664
 	a.Size = uint64(f.asset.GetSize())
+
+	// Ctime -> file meta change time, e.g. change owner, change perms
+	// Mtime -> file content modification time
+	// Atime -> file access time, since GitHub does not track this, we just use the updated time
+	cmaTime := f.asset.GetUpdatedAt().Time
+	a.Ctime = cmaTime
+	a.Mtime = cmaTime
+	a.Atime = cmaTime
+
+	// Crtime -> file created time
+	a.Crtime = f.asset.GetCreatedAt().Time
+
 	return nil
 }
 

main.go

@@ -29,7 +29,7 @@ func (args) Description() string {
 }
 
 func (args) Version() string {
-	return "ghafs 0.1.2"
+	return "ghafs 0.1.3"
 }
 
 func main() {
@@ -48,7 +48,11 @@ func main() {
 	}
 
 	client := github.NewClient(tc)
-	mgmt := makeReleaseMgmt(makeGhContext(ctx, client, args.Owner, args.Repo, time.Duration(args.RefreshThreshold)*time.Second))
+	mgmt, err := makeReleaseMgmt(makeGhContext(ctx, client, args.Owner, args.Repo, time.Duration(args.RefreshThreshold)*time.Second))
+
+	if err != nil {
+		log.Fatal(err)
+	}
 
 	mountOptions := []fuse.MountOption{
 		fuse.FSName("ghafs"),

releaseAssets.go

@@ -25,6 +25,7 @@ type GhContext struct {
 // assets content with the given GitHub context
 type ReleaseMgmt struct {
 	ghc      *GhContext
+	repo     *github.Repository
 	releases *ReleasesWrap
 }
 
@@ -60,8 +61,14 @@ func makeGhContext(ctx context.Context, client *github.Client, owner string, rep
 	return &GhContext{ctx, client, owner, repo, refreshThreshold}
 }
 
-func makeReleaseMgmt(ghc *GhContext) *ReleaseMgmt {
-	return &ReleaseMgmt{ghc, makeReleasesWrap(ghc)}
+func makeReleaseMgmt(ghc *GhContext) (*ReleaseMgmt, error) {
+	repo, _, err := ghc.client.Repositories.Get(ghc.ctx, ghc.owner, ghc.repo)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return &ReleaseMgmt{ghc, repo, makeReleasesWrap(ghc)}, nil
 }
 
 func makeReleasesWrap(ghc *GhContext) *ReleasesWrap {