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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_PROPAGATION_EXTRACTOR_H | |
18 | #define JAEGERTRACING_PROPAGATION_EXTRACTOR_H | |
19 | ||
20 | #include <opentracing/propagation.h> | |
21 | ||
22 | #include "jaegertracing/SpanContext.h" | |
23 | ||
24 | namespace jaegertracing { | |
25 | namespace propagation { | |
26 | ||
27 | template <typename Reader> | |
28 | class Extractor { | |
29 | public: | |
30 | virtual ~Extractor() = default; | |
31 | ||
32 | virtual SpanContext extract(Reader reader) const = 0; | |
33 | }; | |
34 | ||
35 | } // namespace propagation | |
36 | } // namespace jaegertracing | |
37 | ||
38 | #endif // JAEGERTRACING_PROPAGATION_EXTRACTOR_H |