blob: 13474a732f3e2e6794c76c59719ebfb1f882a24d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "opentelemetry/exporters/ostream/span_exporter.h"
#include "opentelemetry/sdk/trace/simple_processor.h"
#include "opentelemetry/sdk/trace/tracer_provider.h"
#include "opentelemetry/trace/provider.h"
#include "opentelemetry/context/propagation/global_propagator.h"
#include "opentelemetry/context/propagation/text_map_propagator.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/trace/propagation/http_trace_context.h"
#include <grpcpp/grpcpp.h>
#include <cstring>
#include <iostream>
#include <vector>
using grpc::ClientContext;
using grpc::ServerContext;
namespace
{
class GrpcClientCarrier : public opentelemetry::context::propagation::TextMapCarrier
{
public:
GrpcClientCarrier(ClientContext *context) : context_(context) {}
GrpcClientCarrier() = default;
virtual opentelemetry::nostd::string_view Get(
opentelemetry::nostd::string_view key) const noexcept override
{
return "";
}
virtual void Set(opentelemetry::nostd::string_view key,
opentelemetry::nostd::string_view value) noexcept override
{
std::cout << " Client ::: Adding " << key << " " << value << "\n";
context_->AddMetadata(key.data(), value.data());
}
ClientContext *context_;
};
class GrpcServerCarrier : public opentelemetry::context::propagation::TextMapCarrier
{
public:
GrpcServerCarrier(ServerContext *context) : context_(context) {}
GrpcServerCarrier() = default;
virtual opentelemetry::nostd::string_view Get(
opentelemetry::nostd::string_view key) const noexcept override
{
auto it = context_->client_metadata().find(key.data());
if (it != context_->client_metadata().end())
{
return it->second.data();
}
return "";
}
virtual void Set(opentelemetry::nostd::string_view key,
opentelemetry::nostd::string_view value) noexcept override
{
// Not required for server
}
ServerContext *context_;
};
void initTracer()
{
auto exporter = std::unique_ptr<opentelemetry::sdk::trace::SpanExporter>(
new opentelemetry::exporter::trace::OStreamSpanExporter);
auto processor = std::unique_ptr<opentelemetry::sdk::trace::SpanProcessor>(
new opentelemetry::sdk::trace::SimpleSpanProcessor(std::move(exporter)));
std::vector<std::unique_ptr<opentelemetry::sdk::trace::SpanProcessor>> processors;
processors.push_back(std::move(processor));
// Default is an always-on sampler.
auto context = std::make_shared<opentelemetry::sdk::trace::TracerContext>(std::move(processors));
auto provider = opentelemetry::nostd::shared_ptr<opentelemetry::trace::TracerProvider>(
new opentelemetry::sdk::trace::TracerProvider(context));
// Set the global trace provider
opentelemetry::trace::Provider::SetTracerProvider(provider);
// set global propagator
opentelemetry::context::propagation::GlobalTextMapPropagator::SetGlobalPropagator(
opentelemetry::nostd::shared_ptr<opentelemetry::context::propagation::TextMapPropagator>(
new opentelemetry::trace::propagation::HttpTraceContext()));
}
opentelemetry::nostd::shared_ptr<opentelemetry::trace::Tracer> get_tracer(std::string tracer_name)
{
auto provider = opentelemetry::trace::Provider::GetTracerProvider();
return provider->GetTracer(tracer_name);
}
} // namespace
|
