github.com/fafucoder/cilium@v1.6.11/pkg/kvstore/trace.go (about)

     1  // Copyright 2016-2018 Authors of Cilium
     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  package kvstore
    16  
    17  import (
    18  	"strings"
    19  
    20  	"github.com/cilium/cilium/pkg/logging"
    21  
    22  	"github.com/sirupsen/logrus"
    23  )
    24  
    25  var (
    26  	// Debugging can be enabled at compile with:
    27  	// -ldflags "-X "github.com/cilium/cilium/pkg/kvstore".Debug=true"
    28  	Debug string
    29  
    30  	traceEnabled bool
    31  )
    32  
    33  // EnableTracing enables kvstore tracing
    34  func EnableTracing() {
    35  	traceEnabled = true
    36  }
    37  
    38  // Trace is used to trace kvstore debug messages
    39  func Trace(format string, err error, fields logrus.Fields, a ...interface{}) {
    40  	if traceEnabled {
    41  		log.WithError(err).WithFields(fields).Debugf(format)
    42  	}
    43  }
    44  
    45  func init() {
    46  	if strings.ToLower(Debug) == "true" {
    47  		logging.DefaultLogger.SetLevel(logrus.DebugLevel)
    48  		traceEnabled = true
    49  	}
    50  }