ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/metrics/Metrics.cpp

   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 #include "jaegertracing/metrics/Metrics.h"
  18 #include "jaegertracing/metrics/Counter.h"
  19 #include "jaegertracing/metrics/Gauge.h"
  20 #include "jaegertracing/metrics/NullStatsFactory.h"
  21 #include <iterator>
  22 #include <map>
  23 #include <sstream>
  24 #include <utility>
  25
  26 namespace jaegertracing {
  27 namespace metrics {
  28
  29 std::unique_ptr<Metrics> Metrics::makeNullMetrics()
  30 {
  31     metrics::NullStatsFactory factory;
  32     return std::unique_ptr<Metrics>(new Metrics(factory));
  33 }
  34
  35 std::string Metrics::addTagsToMetricName(
  36     const std::string& name,
  37     const std::unordered_map<std::string, std::string>& tags)
  38 {
  39     std::ostringstream buffer;
  40     buffer << name;
  41     const std::map<std::string, std::string> orderedMap(std::begin(tags),
  42                                                         std::end(tags));
  43     for (auto&& pair : orderedMap) {
  44         buffer << '.' << pair.first << '=' << pair.second;
  45     }
  46     return buffer.str();
  47 }
  48
  49 Metrics::~Metrics() = default;
  50
  51 }  // namespace metrics
  52 }  // namespace jaegertracing