ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/metrics/NullStatsFactory.h

   1 /*
   2  * Copyright (c) 2017 Uber Technologies, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef JAEGERTRACING_METRICS_NULLSTATSFACTORY_H
  18 #define JAEGERTRACING_METRICS_NULLSTATSFACTORY_H
  19
  20 #include <memory>
  21 #include <string>
  22 #include <unordered_map>
  23
  24 #include "jaegertracing/metrics/NullCounter.h"
  25 #include "jaegertracing/metrics/NullGauge.h"
  26 #include "jaegertracing/metrics/NullTimer.h"
  27 #include "jaegertracing/metrics/StatsFactory.h"
  28
  29 namespace jaegertracing {
  30 namespace metrics {
  31
  32 class Counter;
  33 class Gauge;
  34 class Timer;
  35
  36 class NullStatsFactory : public StatsFactory {
  37   public:
  38     using StatsFactory::createCounter;
  39     using StatsFactory::createGauge;
  40     using StatsFactory::createTimer;
  41
  42     std::unique_ptr<Counter>
  43     createCounter(const std::string&,
  44                   const std::unordered_map<std::string, std::string>&) override
  45     {
  46         return std::unique_ptr<Counter>(new NullCounter());
  47     }
  48
  49     std::unique_ptr<Timer>
  50     createTimer(const std::string&,
  51                 const std::unordered_map<std::string, std::string>&) override
  52     {
  53         return std::unique_ptr<Timer>(new NullTimer());
  54     }
  55
  56     std::unique_ptr<Gauge>
  57     createGauge(const std::string&,
  58                 const std::unordered_map<std::string, std::string>&) override
  59     {
  60         return std::unique_ptr<Gauge>(new NullGauge());
  61     }
  62 };
  63
  64 }  // namespace metrics
  65 }  // namespace jaegertracing
  66
  67 #endif  // JAEGERTRACING_METRICS_NULLSTATSFACTORY_H