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1 | /* |
2 | * Copyright (c) 2018 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 "TracerFactory.h" | |
18 | ||
19 | #include "jaegertracing/Tracer.h" | |
20 | ||
21 | namespace jaegertracing { | |
22 | ||
23 | opentracing::expected<std::shared_ptr<opentracing::Tracer>> | |
24 | TracerFactory::MakeTracer(const char* configuration, | |
25 | std::string& errorMessage) const noexcept try { | |
26 | #ifndef JAEGERTRACING_WITH_YAML_CPP | |
27 | errorMessage = | |
28 | "Failed to construct tracer: Jaeger was not build with yaml support."; | |
29 | return opentracing::make_unexpected( | |
30 | std::make_error_code(std::errc::not_supported)); | |
31 | #else | |
32 | YAML::Node yaml; | |
33 | try { | |
34 | yaml = YAML::Load(configuration); | |
35 | } catch (const YAML::ParserException& e) { | |
36 | errorMessage = e.what(); | |
37 | return opentracing::make_unexpected( | |
38 | opentracing::configuration_parse_error); | |
39 | } | |
40 | ||
41 | auto tracerConfig = jaegertracing::Config::parse(yaml); | |
42 | ||
43 | if (_readFromEnv) { | |
44 | tracerConfig.fromEnv(); | |
45 | } | |
46 | ||
47 | if (tracerConfig.serviceName().empty()) { | |
48 | errorMessage = "`service_name` not provided"; | |
49 | return opentracing::make_unexpected( | |
50 | opentracing::invalid_configuration_error); | |
51 | } | |
52 | ||
53 | return jaegertracing::Tracer::make(tracerConfig); | |
54 | #endif // JAEGERTRACING_WITH_YAML_CPP | |
55 | } catch (const std::bad_alloc&) { | |
56 | return opentracing::make_unexpected( | |
57 | std::make_error_code(std::errc::not_enough_memory)); | |
58 | } catch (const std::exception& e) { | |
59 | errorMessage = e.what(); | |
60 | return opentracing::make_unexpected( | |
61 | opentracing::invalid_configuration_error); | |
62 | } | |
63 | } // namespace jaegertracing |