Added the Stat API

client/alloc_runner.go

@@ -428,3 +428,7 @@ func (r *AllocRunner) WaitCh() <-chan struct{} {
 func (r *AllocRunner) FSList(path string) ([]*allocdir.AllocFile, error) {
 	return r.ctx.AllocDir.FSList(path)
 }
+
+func (r *AllocRunner) FSStat(path string) (*allocdir.AllocFile, error) {
+	return r.ctx.AllocDir.FSStat(path)
+}

client/allocdir/alloc_dir.go

@@ -41,6 +41,7 @@ type AllocDir struct {
 type AllocFile struct {
 	Name  string
 	IsDir bool
+	Size  int64
 }
 
 func NewAllocDir(allocDir string) *AllocDir {
@@ -233,11 +234,26 @@ func (d *AllocDir) FSList(path string) ([]*AllocFile, error) {
 		files[idx] = &AllocFile{
 			Name:  info.Name(),
 			IsDir: info.IsDir(),
+			Size:  info.Size(),
 		}
 	}
 	return files, err
 }
 
+func (d *AllocDir) FSStat(path string) (*AllocFile, error) {
+	info, err := os.Stat(path)
+	if err != nil {
+		return nil, err
+	}
+
+	return &AllocFile{
+		Size:  info.Size(),
+		Name:  info.Name(),
+		IsDir: info.IsDir(),
+	}, nil
+
+}
+
 func fileCopy(src, dst string, perm os.FileMode) error {
 	// Do a simple copy.
 	srcFile, err := os.Open(src)

client/client.go

@@ -363,6 +363,14 @@ func (c *Client) FSList(allocID string, path string) ([]*allocdir.AllocFile, err
 	return ar.FSList(path)
 }
 
+func (c *Client) FSStat(allocID string, path string) (*allocdir.AllocFile, error) {
+	ar, ok := c.allocs[allocID]
+	if !ok {
+		return nil, fmt.Errorf("alloc not found")
+	}
+	return ar.FSStat(path)
+}
+
 // restoreState is used to restore our state from the data dir
 func (c *Client) restoreState() error {
 	if c.config.DevMode {

command/agent/fs_endpoint.go

@@ -24,7 +24,21 @@ func (s *HTTPServer) DirectoryListRequest(resp http.ResponseWriter, req *http.Re
 }
 
 func (s *HTTPServer) FileStatRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
-	return nil, nil
+	allocID := strings.TrimPrefix(req.URL.Path, "/v1/client/fs/ls/")
+	path := req.URL.Query().Get("path")
+	if path == "" {
+		resp.WriteHeader(http.StatusNotFound)
+		return nil, fmt.Errorf("must provide a file name")
+	}
+	if allocID == "" {
+		resp.WriteHeader(http.StatusNotFound)
+		return nil, fmt.Errorf("alloc id not found")
+	}
+	fileInfo, err := s.agent.client.FSStat(allocID, path)
+	if err != nil {
+		return nil, err
+	}
+	return fileInfo, nil
 }
 
 func (s *HTTPServer) FileReadAtRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {