Adding upstream version 18.2.2.upstream/18.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 87 insertions, 0 deletions

diff --git a/src/jaegertracing/opentelemetry-cpp/examples/zipkin/CMakeLists.txt b/src/jaegertracing/opentelemetry-cpp/examples/zipkin/CMakeLists.txt
new file mode 100644
index 000000000..f55f363d7
--- /dev/null
+++ b/src/jaegertracing/opentelemetry-cpp/examples/zipkin/CMakeLists.txt
@@ -0,0 +1,6 @@
+include_directories(${CMAKE_SOURCE_DIR}/exporters/zipkin/include)
+
+add_executable(example_zipkin main.cc)
+target_link_libraries(
+  example_zipkin ${CMAKE_THREAD_LIBS_INIT} common_foo_library
+  opentelemetry_trace opentelemetry_exporter_zipkin_trace)
diff --git a/src/jaegertracing/opentelemetry-cpp/examples/zipkin/README.md b/src/jaegertracing/opentelemetry-cpp/examples/zipkin/README.md
new file mode 100644
index 000000000..17d325ecb
--- /dev/null
+++ b/src/jaegertracing/opentelemetry-cpp/examples/zipkin/README.md
@@ -0,0 +1,32 @@
+# Zipkin Exporter Example
+
+This is an example of how to use the Zipkin exporter.
+
+The application in `main.cc` initializes an `ZipkinExporter` instance and uses
+it to register a tracer provider from the [OpenTelemetry
+SDK](https://github.com/open-telemetry/opentelemetry-cpp). The application then
+calls a `foo_library` which has been instrumented using the [OpenTelemetry
+API](https://github.com/open-telemetry/opentelemetry-cpp/tree/main/api).
+
+Resulting spans are exported to the Zipkin server using the Zipkin exporter.
+
+Note that the Zipkin exporter connects to the server at `localhost:9411` by
+default.
+
+## Running Zipkin server locally
+
+The quick way to run the Zipkin server is using Docker container :
+
+``console
+
+$ docker run -d -p 9411:9411 openzipkin/zipkin
+
+``
+
+## Running Zipkin example
+
+Build this example using instructions in [INSTALL.md](../../INSTALL.md).
+
+## Viewing the traces
+
+Please visit the Zipkin UI endpoint `http://localhost:9411`
diff --git a/src/jaegertracing/opentelemetry-cpp/examples/zipkin/main.cc b/src/jaegertracing/opentelemetry-cpp/examples/zipkin/main.cc
new file mode 100644
index 000000000..352114749
--- /dev/null
+++ b/src/jaegertracing/opentelemetry-cpp/examples/zipkin/main.cc
@@ -0,0 +1,49 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#include "opentelemetry/exporters/zipkin/zipkin_exporter.h"
+#include "opentelemetry/sdk/trace/simple_processor.h"
+#include "opentelemetry/sdk/trace/tracer_provider.h"
+#include "opentelemetry/trace/provider.h"
+
+#ifdef BAZEL_BUILD
+#  include "examples/common/foo_library/foo_library.h"
+#else
+#  include "foo_library/foo_library.h"
+#endif
+
+namespace trace     = opentelemetry::trace;
+namespace nostd     = opentelemetry::nostd;
+namespace trace_sdk = opentelemetry::sdk::trace;
+namespace zipkin    = opentelemetry::exporter::zipkin;
+namespace resource  = opentelemetry::sdk::resource;
+
+namespace
+{
+zipkin::ZipkinExporterOptions opts;
+void InitTracer()
+{
+  // Create zipkin exporter instance
+  resource::ResourceAttributes attributes = {{"service.name", "zipkin_demo_service"}};
+  auto resource                           = resource::Resource::Create(attributes);
+  auto exporter  = std::unique_ptr<trace_sdk::SpanExporter>(new zipkin::ZipkinExporter(opts));
+  auto processor = std::unique_ptr<trace_sdk::SpanProcessor>(
+      new trace_sdk::SimpleSpanProcessor(std::move(exporter)));
+  auto provider = nostd::shared_ptr<trace::TracerProvider>(
+      new trace_sdk::TracerProvider(std::move(processor), resource));
+  // Set the global trace provider
+  trace::Provider::SetTracerProvider(provider);
+}
+}  // namespace
+
+int main(int argc, char *argv[])
+{
+  if (argc == 2)
+  {
+    opts.endpoint = argv[1];
+  }
+  // Removing this line will leave the default noop TracerProvider in place.
+  InitTracer();
+
+  foo_library();
+}