From b5385b616d7978e7e01e7f3c5722de66ec5ef030 Mon Sep 17 00:00:00 2001
From: Diptanu Choudhury <diptanuc@gmail.com>
Date: Tue, 12 Jan 2016 21:28:07 -0800
Subject: [PATCH] Implemented the Stat API

---
 client/allocdir/alloc_dir.go | 13 ++++++++++++-
 client/client.go             |  4 ++++
 command/agent/fs_endpoint.go |  2 +-
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/client/allocdir/alloc_dir.go b/client/allocdir/alloc_dir.go
index 19a26fd9c..589a77d55 100644
--- a/client/allocdir/alloc_dir.go
+++ b/client/allocdir/alloc_dir.go
@@ -241,7 +241,8 @@ func (d *AllocDir) FSList(path string) ([]*AllocFile, error) {
 }
 
 func (d *AllocDir) FSStat(path string) (*AllocFile, error) {
-	info, err := os.Stat(path)
+	p := filepath.Join(d.AllocDir, path)
+	info, err := os.Stat(p)
 	if err != nil {
 		return nil, err
 	}
@@ -251,7 +252,17 @@ func (d *AllocDir) FSStat(path string) (*AllocFile, error) {
 		Name:  info.Name(),
 		IsDir: info.IsDir(),
 	}, nil
+}
 
+func (d *AllocDir) FSReadAt(allocID string, path string, offset int64, limit int64) ([]byte, error) {
+	p := filepath.Join(d.AllocDir, path)
+	f, err := os.Open(p)
+	if err != nil {
+		return nil, err
+	}
+	b := make([]byte, limit)
+	f.ReadAt(b, offset)
+	return b, nil
 }
 
 func fileCopy(src, dst string, perm os.FileMode) error {
diff --git a/client/client.go b/client/client.go
index f7ae52682..f7a526c09 100644
--- a/client/client.go
+++ b/client/client.go
@@ -371,6 +371,10 @@ func (c *Client) FSStat(allocID string, path string) (*allocdir.AllocFile, error
 	return ar.FSStat(path)
 }
 
+func (c *Client) FSReadAt(allocID string, path string, offset int64, limit int64) ([]byte, error) {
+	return nil, nil
+}
+
 // restoreState is used to restore our state from the data dir
 func (c *Client) restoreState() error {
 	if c.config.DevMode {
diff --git a/command/agent/fs_endpoint.go b/command/agent/fs_endpoint.go
index 58dd1e5ab..a4fd48cb3 100644
--- a/command/agent/fs_endpoint.go
+++ b/command/agent/fs_endpoint.go
@@ -24,7 +24,7 @@ func (s *HTTPServer) DirectoryListRequest(resp http.ResponseWriter, req *http.Re
 }
 
 func (s *HTTPServer) FileStatRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
-	allocID := strings.TrimPrefix(req.URL.Path, "/v1/client/fs/ls/")
+	allocID := strings.TrimPrefix(req.URL.Path, "/v1/client/fs/stat/")
 	path := req.URL.Query().Get("path")
 	if path == "" {
 		resp.WriteHeader(http.StatusNotFound)