ceph/src/jaegertracing/jaeger-client-cpp/src/jaegertracing/Tag.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/Tag.h"
  18 #include "jaegertracing/thrift-gen/jaeger_types.h"
  19
  20 namespace jaegertracing {
  21 class ThriftVisitor {
  22   public:
  23     using result_type = void;
  24
  25     explicit ThriftVisitor(thrift::Tag& tag)
  26         : _tag(tag)
  27     {
  28     }
  29
  30     void operator()(const std::string& value) const { setString(value); }
  31
  32     void operator()(const char* value) const { setString(value); }
  33
  34     void operator()(double value) const
  35     {
  36         _tag.__set_vType(thrift::TagType::DOUBLE);
  37         _tag.__set_vDouble(value);
  38     }
  39
  40     void operator()(bool value) const
  41     {
  42         _tag.__set_vType(thrift::TagType::BOOL);
  43         _tag.__set_vBool(value);
  44     }
  45
  46     void operator()(int64_t value) const { setLong(value); }
  47
  48     void operator()(uint64_t value) const { setLong(value); }
  49
  50     template <typename Arg>
  51     void operator()(Arg&& value) const
  52     {
  53         // No-op
  54     }
  55
  56   private:
  57     void setString(opentracing::string_view value) const
  58     {
  59         _tag.__set_vType(thrift::TagType::STRING);
  60         _tag.__set_vStr(value);
  61     }
  62
  63     void setLong(int64_t value) const
  64     {
  65         _tag.__set_vType(thrift::TagType::LONG);
  66         _tag.__set_vLong(value);
  67     }
  68
  69     thrift::Tag& _tag;
  70 };
  71
  72 void Tag::thrift(thrift::Tag& tag) const
  73 {
  74     tag.__set_key(_key);
  75     ThriftVisitor visitor(tag);
  76     opentracing::util::apply_visitor(visitor, _value);
  77 }
  78
  79 }  // namespace jaegertracing