ceph/src/jaegertracing/thrift/lib/netstd/Thrift/Transport/Server/NullLogger.cs

   1 // Licensed to the Apache Software Foundation(ASF) under one
   2 // or more contributor license agreements.See the NOTICE file
   3 // distributed with this work for additional information
   4 // regarding copyright ownership.The ASF licenses this file
   5 // to you under the Apache License, Version 2.0 (the
   6 // "License"); you may not use this file except in compliance
   7 // with the License. You may obtain a copy of the License at
   8 //
   9 //     http://www.apache.org/licenses/LICENSE-2.0
  10 //
  11 // Unless required by applicable law or agreed to in writing,
  12 // software distributed under the License is distributed on an
  13 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  14 // KIND, either express or implied. See the License for the
  15 // specific language governing permissions and limitations
  16 // under the License.
  17
  18 using Microsoft.Extensions.Logging;
  19 using System;
  20
  21
  22 namespace Thrift.Transport.Server
  23 {
  24     // sometimes we just don't want to log anything
  25     internal class NullLogger<T> : IDisposable, ILogger, ILogger<T>
  26     {
  27         internal class NullScope : IDisposable
  28         {
  29             public void Dispose()
  30             {
  31                 // nothing to do
  32             }
  33         }
  34
  35         public IDisposable BeginScope<TState>(TState state)
  36         {
  37             return new NullScope();
  38         }
  39
  40         public void Dispose()
  41         {
  42             // nothing to do
  43         }
  44
  45         public bool IsEnabled(LogLevel logLevel)
  46         {
  47             return false;  // no
  48         }
  49
  50         public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)
  51         {
  52             // do nothing
  53         }
  54     }
  55 }
  56