logger.go

Documentation: github.com/chaos-mesh/chaos-mesh/pkg/chaosctl/common

     1  // Copyright 2021 Chaos Mesh Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  // http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  
    16  package common
    17  
    18  import (
    19  	"flag"
    20  
    21  	"github.com/go-logr/logr"
    22  	"github.com/spf13/pflag"
    23  	"k8s.io/klog/v2"
    24  	"k8s.io/klog/v2/klogr"
    25  )
    26  
    27  type LoggerFlushFunc func()
    28  
    29  func SetupKlog() error {
    30  	// setup klog
    31  	klog.InitFlags(flag.CommandLine)
    32  	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
    33  	return flag.Set("logtostderr", "true")
    34  }
    35  
    36  func NewStderrLogger() (logr.Logger, LoggerFlushFunc, error) {
    37  	logger := klogr.New()
    38  	return logger, klog.Flush, nil
    39  }
    40  
    41  var globalLogger logr.Logger
    42  
    43  func SetupGlobalLogger(logger logr.Logger) {
    44  	globalLogger = logger
    45  }
    46  
    47  func L() logr.Logger {
    48  	if globalLogger.GetSink() == nil {
    49  		panic("global logger not initialized")
    50  	}
    51  	return globalLogger
    52  }
    53