mirror of https://github.com/k3s-io/k3s
78 lines
2.3 KiB
Go
78 lines
2.3 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package clientv3
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import (
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"log"
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"os"
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"go.etcd.io/etcd/client/pkg/v3/logutil"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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"go.uber.org/zap/zapgrpc"
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"google.golang.org/grpc/grpclog"
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)
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func init() {
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// We override grpc logger only when the environment variable is set
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// in order to not interfere by default with user's code or other libraries.
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if os.Getenv("ETCD_CLIENT_DEBUG") != "" {
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lg, err := CreateDefaultZapLogger()
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if err != nil {
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panic(err)
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}
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grpclog.SetLoggerV2(zapgrpc.NewLogger(lg))
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}
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}
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// SetLogger sets grpc logger.
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//
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// Deprecated: use grpclog.SetLoggerV2 directly or grpc_zap.ReplaceGrpcLoggerV2.
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func SetLogger(l grpclog.LoggerV2) {
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grpclog.SetLoggerV2(l)
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}
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// etcdClientDebugLevel translates ETCD_CLIENT_DEBUG into zap log level.
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func etcdClientDebugLevel() zapcore.Level {
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envLevel := os.Getenv("ETCD_CLIENT_DEBUG")
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if envLevel == "" || envLevel == "true" {
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return zapcore.InfoLevel
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}
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var l zapcore.Level
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if err := l.Set(envLevel); err == nil {
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log.Printf("Deprecated env ETCD_CLIENT_DEBUG value. Using default level: 'info'")
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return zapcore.InfoLevel
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}
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return l
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}
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// CreateDefaultZapLoggerConfig creates a logger config that is configurable using env variable:
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// ETCD_CLIENT_DEBUG= debug|info|warn|error|dpanic|panic|fatal|true (true=info)
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func CreateDefaultZapLoggerConfig() zap.Config {
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lcfg := logutil.DefaultZapLoggerConfig
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lcfg.Level = zap.NewAtomicLevelAt(etcdClientDebugLevel())
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return lcfg
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}
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// CreateDefaultZapLogger creates a logger that is configurable using env variable:
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// ETCD_CLIENT_DEBUG= debug|info|warn|error|dpanic|panic|fatal|true (true=info)
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func CreateDefaultZapLogger() (*zap.Logger, error) {
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c, err := CreateDefaultZapLoggerConfig().Build()
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if err != nil {
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return nil, err
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}
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return c.Named("etcd-client"), nil
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}
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