[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/coreos/etcd/raft/logger.go b/vendor/github.com/coreos/etcd/raft/logger.go
new file mode 100644
index 0000000..426a77d
--- /dev/null
+++ b/vendor/github.com/coreos/etcd/raft/logger.go
@@ -0,0 +1,126 @@
+// Copyright 2015 The etcd Authors
+//
+// 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 raft
+
+import (
+ "fmt"
+ "io/ioutil"
+ "log"
+ "os"
+)
+
+type Logger interface {
+ Debug(v ...interface{})
+ Debugf(format string, v ...interface{})
+
+ Error(v ...interface{})
+ Errorf(format string, v ...interface{})
+
+ Info(v ...interface{})
+ Infof(format string, v ...interface{})
+
+ Warning(v ...interface{})
+ Warningf(format string, v ...interface{})
+
+ Fatal(v ...interface{})
+ Fatalf(format string, v ...interface{})
+
+ Panic(v ...interface{})
+ Panicf(format string, v ...interface{})
+}
+
+func SetLogger(l Logger) { raftLogger = l }
+
+var (
+ defaultLogger = &DefaultLogger{Logger: log.New(os.Stderr, "raft", log.LstdFlags)}
+ discardLogger = &DefaultLogger{Logger: log.New(ioutil.Discard, "", 0)}
+ raftLogger = Logger(defaultLogger)
+)
+
+const (
+ calldepth = 2
+)
+
+// DefaultLogger is a default implementation of the Logger interface.
+type DefaultLogger struct {
+ *log.Logger
+ debug bool
+}
+
+func (l *DefaultLogger) EnableTimestamps() {
+ l.SetFlags(l.Flags() | log.Ldate | log.Ltime)
+}
+
+func (l *DefaultLogger) EnableDebug() {
+ l.debug = true
+}
+
+func (l *DefaultLogger) Debug(v ...interface{}) {
+ if l.debug {
+ l.Output(calldepth, header("DEBUG", fmt.Sprint(v...)))
+ }
+}
+
+func (l *DefaultLogger) Debugf(format string, v ...interface{}) {
+ if l.debug {
+ l.Output(calldepth, header("DEBUG", fmt.Sprintf(format, v...)))
+ }
+}
+
+func (l *DefaultLogger) Info(v ...interface{}) {
+ l.Output(calldepth, header("INFO", fmt.Sprint(v...)))
+}
+
+func (l *DefaultLogger) Infof(format string, v ...interface{}) {
+ l.Output(calldepth, header("INFO", fmt.Sprintf(format, v...)))
+}
+
+func (l *DefaultLogger) Error(v ...interface{}) {
+ l.Output(calldepth, header("ERROR", fmt.Sprint(v...)))
+}
+
+func (l *DefaultLogger) Errorf(format string, v ...interface{}) {
+ l.Output(calldepth, header("ERROR", fmt.Sprintf(format, v...)))
+}
+
+func (l *DefaultLogger) Warning(v ...interface{}) {
+ l.Output(calldepth, header("WARN", fmt.Sprint(v...)))
+}
+
+func (l *DefaultLogger) Warningf(format string, v ...interface{}) {
+ l.Output(calldepth, header("WARN", fmt.Sprintf(format, v...)))
+}
+
+func (l *DefaultLogger) Fatal(v ...interface{}) {
+ l.Output(calldepth, header("FATAL", fmt.Sprint(v...)))
+ os.Exit(1)
+}
+
+func (l *DefaultLogger) Fatalf(format string, v ...interface{}) {
+ l.Output(calldepth, header("FATAL", fmt.Sprintf(format, v...)))
+ os.Exit(1)
+}
+
+func (l *DefaultLogger) Panic(v ...interface{}) {
+ l.Logger.Panic(v...)
+}
+
+func (l *DefaultLogger) Panicf(format string, v ...interface{}) {
+ l.Logger.Panicf(format, v...)
+}
+
+func header(lvl, msg string) string {
+ return fmt.Sprintf("%s: %s", lvl, msg)
+}