[VOL-2538] Logging - Implement dynamic log levels in ofagent
Change-Id: I9582230d9d3c34ea84339fddf2b2f3b3d2804808
diff --git a/vendor/go.etcd.io/etcd/pkg/logutil/zap_grpc.go b/vendor/go.etcd.io/etcd/pkg/logutil/zap_grpc.go
new file mode 100644
index 0000000..3f48d81
--- /dev/null
+++ b/vendor/go.etcd.io/etcd/pkg/logutil/zap_grpc.go
@@ -0,0 +1,111 @@
+// 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.
+
+package logutil
+
+import (
+ "go.uber.org/zap"
+ "go.uber.org/zap/zapcore"
+ "google.golang.org/grpc/grpclog"
+)
+
+// NewGRPCLoggerV2 converts "*zap.Logger" to "grpclog.LoggerV2".
+// It discards all INFO level logging in gRPC, if debug level
+// is not enabled in "*zap.Logger".
+func NewGRPCLoggerV2(lcfg zap.Config) (grpclog.LoggerV2, error) {
+ lg, err := lcfg.Build(zap.AddCallerSkip(1)) // to annotate caller outside of "logutil"
+ if err != nil {
+ return nil, err
+ }
+ return &zapGRPCLogger{lg: lg, sugar: lg.Sugar()}, nil
+}
+
+// NewGRPCLoggerV2FromZapCore creates "grpclog.LoggerV2" from "zap.Core"
+// and "zapcore.WriteSyncer". It discards all INFO level logging in gRPC,
+// if debug level is not enabled in "*zap.Logger".
+func NewGRPCLoggerV2FromZapCore(cr zapcore.Core, syncer zapcore.WriteSyncer) grpclog.LoggerV2 {
+ // "AddCallerSkip" to annotate caller outside of "logutil"
+ lg := zap.New(cr, zap.AddCaller(), zap.AddCallerSkip(1), zap.ErrorOutput(syncer))
+ return &zapGRPCLogger{lg: lg, sugar: lg.Sugar()}
+}
+
+type zapGRPCLogger struct {
+ lg *zap.Logger
+ sugar *zap.SugaredLogger
+}
+
+func (zl *zapGRPCLogger) Info(args ...interface{}) {
+ if !zl.lg.Core().Enabled(zapcore.DebugLevel) {
+ return
+ }
+ zl.sugar.Info(args...)
+}
+
+func (zl *zapGRPCLogger) Infoln(args ...interface{}) {
+ if !zl.lg.Core().Enabled(zapcore.DebugLevel) {
+ return
+ }
+ zl.sugar.Info(args...)
+}
+
+func (zl *zapGRPCLogger) Infof(format string, args ...interface{}) {
+ if !zl.lg.Core().Enabled(zapcore.DebugLevel) {
+ return
+ }
+ zl.sugar.Infof(format, args...)
+}
+
+func (zl *zapGRPCLogger) Warning(args ...interface{}) {
+ zl.sugar.Warn(args...)
+}
+
+func (zl *zapGRPCLogger) Warningln(args ...interface{}) {
+ zl.sugar.Warn(args...)
+}
+
+func (zl *zapGRPCLogger) Warningf(format string, args ...interface{}) {
+ zl.sugar.Warnf(format, args...)
+}
+
+func (zl *zapGRPCLogger) Error(args ...interface{}) {
+ zl.sugar.Error(args...)
+}
+
+func (zl *zapGRPCLogger) Errorln(args ...interface{}) {
+ zl.sugar.Error(args...)
+}
+
+func (zl *zapGRPCLogger) Errorf(format string, args ...interface{}) {
+ zl.sugar.Errorf(format, args...)
+}
+
+func (zl *zapGRPCLogger) Fatal(args ...interface{}) {
+ zl.sugar.Fatal(args...)
+}
+
+func (zl *zapGRPCLogger) Fatalln(args ...interface{}) {
+ zl.sugar.Fatal(args...)
+}
+
+func (zl *zapGRPCLogger) Fatalf(format string, args ...interface{}) {
+ zl.sugar.Fatalf(format, args...)
+}
+
+func (zl *zapGRPCLogger) V(l int) bool {
+ // infoLog == 0
+ if l <= 0 { // debug level, then we ignore info level in gRPC
+ return !zl.lg.Core().Enabled(zapcore.DebugLevel)
+ }
+ return true
+}