fix #927 check pull status code

Signed-off-by: Xian Chaobo <xianchaobo@huawei.com>

Godeps/Godeps.json

@@ -105,7 +105,7 @@
 		},
 		{
 			"ImportPath": "github.com/samalba/dockerclient",
-			"Rev": "a78609286676d55688dcedf8a90522bc7d1bd569"
+			"Rev": "15ebe064ca62ad0d64834e7ef0d4ed8ce9d02cde"
 		},
 		{
 			"ImportPath": "github.com/samuel/go-zookeeper/zk",

Godeps/_workspace/src/github.com/samalba/dockerclient/dockerclient.go

@@ -453,7 +453,19 @@ func (client *DockerClient) PullImage(name string, auth *AuthConfig) error {
 	if err != nil {
 		return err
 	}
+
 	defer resp.Body.Close()
+	if resp.StatusCode == 404 {
+		return ErrNotFound
+	}
+	if resp.StatusCode >= 400 {
+		data, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+		return fmt.Errorf("%s", string(data))
+	}
+
 	var finalObj map[string]interface{}
 	for decoder := json.NewDecoder(resp.Body); err == nil; err = decoder.Decode(&finalObj) {
 	}

test/integration/api/run.bats

@@ -20,6 +20,10 @@ function teardown() {
 
 	# verify, container is running
 	[ -n $(docker_swarm ps -q --filter=name=test_container --filter=status=running) ]
+
+	# error check
+	run docker_swarm run -d 4e8aa3148a132f19ec560952231c4d39522043994df7d2dc239942c0f9424ebd
+	[[ "${output}" == *"cannot specify 64-byte hexadecimal strings"* ]]
 }
 
 @test "docker run with resources" {