github.com/m3db/m3@v1.5.0/src/dbnode/x/tchannel/logger.go (about)

     1  // Copyright (c) 2017 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package xtchannel
    22  
    23  import (
    24  	"fmt"
    25  	"os"
    26  
    27  	tchannel "github.com/uber/tchannel-go"
    28  )
    29  
    30  var noLog noopLogger
    31  
    32  type noopLogger struct{}
    33  
    34  // NewNoopLogger returns a default tchannel no-op logger.
    35  func NewNoopLogger() tchannel.Logger { return noLog }
    36  
    37  func (noopLogger) Enabled(_ tchannel.LogLevel) bool {
    38  	return false
    39  }
    40  func (noopLogger) Fatal(msg string) {
    41  	fmt.Fprintf(os.Stderr, msg)
    42  	os.Exit(1)
    43  }
    44  func (noopLogger) Error(msg string) {
    45  
    46  }
    47  func (noopLogger) Warn(msg string) {
    48  
    49  }
    50  func (noopLogger) Infof(msg string, args ...interface{}) {
    51  
    52  }
    53  func (noopLogger) Info(msg string) {
    54  
    55  }
    56  func (noopLogger) Debugf(msg string, args ...interface{}) {
    57  
    58  }
    59  func (noopLogger) Debug(msg string) {
    60  
    61  }
    62  func (noopLogger) Fields() tchannel.LogFields {
    63  	return nil
    64  }
    65  func (l noopLogger) WithFields(fields ...tchannel.LogField) tchannel.Logger {
    66  	return l
    67  }