*: rename to "journal"

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

embed/config_logging_journal_unix.go

@@ -0,0 +1,35 @@
+// Copyright 2018 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.
+
+// +build !windows
+
+package embed
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/coreos/etcd/pkg/logutil"
+
+	"go.uber.org/zap/zapcore"
+)
+
+// use stderr as fallback
+func getJournalWriteSyncer() (zapcore.WriteSyncer, error) {
+	jw, err := logutil.NewJournalWriter(os.Stderr)
+	if err != nil {
+		return nil, fmt.Errorf("can't find journal (%v)", err)
+	}
+	return zapcore.AddSync(jw), nil
+}