admin: Display commit ID in admin interface

admin/sync/file.go

@@ -19,6 +19,8 @@ import (
 type Importer interface {
 	// Kind returns information about the Importer, for human interrest.
 	Kind() string
+	// Id returns information about the current state (commit id, ...).
+	Id() *string
 	// init performs the importer initialization.
 	Init() error
 	// sync tries to pull the latest modification of the underlying storage.

admin/sync/full.go

@@ -44,6 +44,9 @@ func SpeedySyncDeep(i Importer) (errs map[string][]string) {
 
 	if err := i.Sync(); err != nil {
 		errs["_sync"] = []string{err.Error()}
+		if _id := i.Id(); _id != nil {
+			errs["_sync"] = append(errs["_sync"], *_id)
+		}
 	}
 
 	errs["_date"] = []string{fmt.Sprintf("%v", startTime)}

admin/sync/importer_cloud.go

@@ -38,6 +38,10 @@ func (i CloudImporter) Kind() string {
 	return "cloud file importer: " + i.baseDAV.String()
 }
 
+func (i CloudImporter) Id() *string {
+	return nil
+}
+
 func (i CloudImporter) Init() error {
 	return nil
 }

admin/sync/importer_git.go

@@ -51,7 +51,7 @@ func NewGitImporter(li LocalImporter, remote string) GitImporter {
 	}
 }
 
-func (i GitImporter) Kind() string {
+func (i GitImporter) Id() *string {
 	var gitinfo string
 	r, err := git.PlainOpen(i.li.Base)
 	if err == nil {
@@ -61,7 +61,7 @@ func (i GitImporter) Kind() string {
 		}
 	}
 
-	return "git originated from " + i.Remote + " on " + i.li.Kind() + ", currently on commit " + gitinfo
+	return &gitinfo
 }
 
 func (i GitImporter) Init() error {

admin/sync/importer_git_common.go

@@ -37,3 +37,7 @@ func (i GitImporter) listDir(filename string) ([]string, error) {
 func (i GitImporter) stat(filename string) (os.FileInfo, error) {
 	return i.li.stat(filename)
 }
+
+func (i GitImporter) Kind() string {
+	return "git originated from " + i.Remote + " on " + i.li.Kind()
+}

admin/sync/importer_gitbin.go

@@ -25,7 +25,7 @@ func NewGitImporter(li LocalImporter, remote string) GitImporter {
 	}
 }
 
-func (i GitImporter) Kind() string {
+func (i GitImporter) Id() *string {
 	cmdshow := exec.Command("git", "-C", i.li.Base, "show")
 	var outshow bytes.Buffer
 	cmdshow.Stdout = &outshow
@@ -43,7 +43,7 @@ func (i GitImporter) Kind() string {
 		}
 	}
 
-	return "git originated from " + i.Remote + " on " + i.li.Kind() + ", currently on commit " + commit
+	return &commit
 }
 
 func (i GitImporter) Init() error {

admin/sync/importer_localfs.go

@@ -26,6 +26,10 @@ func (i LocalImporter) Kind() string {
 	}
 }
 
+func (i LocalImporter) Id() *string {
+	return nil
+}
+
 func (i LocalImporter) Init() error {
 	if f, err := os.Stat(i.Base); os.IsNotExist(err) {
 		if err = os.Mkdir(i.Base, 0751); err != nil {