support retrying for failed jobs

job/replication/error.go

@@ -0,0 +1,32 @@
+/*
+   Copyright (c) 2016 VMware, Inc. All Rights Reserved.
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package replication
+
+import (
+	"net"
+)
+
+// ShouldRetry determines whether a job should be retried when an error occurred
+func ShouldRetry(err error) bool {
+	return isTemporary(err)
+}
+
+func isTemporary(err error) bool {
+	if netErr, ok := err.(net.Error); ok {
+		return netErr.Temporary()
+	}
+	return false
+}

job/replication/transfer.go

@@ -226,7 +226,7 @@ func (c *Checker) projectExist() (exist, canWrite bool, err error) {
 	}
 
 	if resp.StatusCode == http.StatusOK {
-		projects := make([]models.Project, 1)
+		projects := make([]models.Project, 0)
 		if err = json.Unmarshal(data, &projects); err != nil {
 			return
 		}