[TEST] Functional tests for OTLP/gRPC with mutual TLS (open-telemetry#3227)

Author: chusitoo

.github/workflows/ci.yml

@@ -452,6 +452,15 @@ jobs:
       run: |
         sudo ./ci/setup_grpc.sh
         ./ci/do_ci.sh cmake.exporter.otprotocol.test
+    - name: generate test cert
+      env:
+        CFSSL_VERSION: 1.6.3
+      run: |
+        sudo -E ./tools/setup-cfssl.sh
+        (cd ./functional/cert; ./generate_cert.sh)
+    - name: run func test
+      run: |
+        (cd ./functional/otlp; ./run_test.sh)
 
   cmake_modern_protobuf_grpc_with_abseil_test:
     name: CMake test (with modern protobuf,grpc and abseil)

exporters/otlp/src/otlp_grpc_exporter.cc

@@ -150,6 +150,7 @@ sdk::common::ExportResult OtlpGrpcExporter::Export(
   else
   {
 #endif
+    const auto resource_spans_size = request->resource_spans_size();
     grpc::Status status =
         OtlpGrpcClient::DelegateExport(trace_service_stub_.get(), std::move(context),
                                        std::move(arena), std::move(*request), response);
@@ -160,6 +161,11 @@ sdk::common::ExportResult OtlpGrpcExporter::Export(
                               << "\" error_message: \"" << status.error_message() << "\"");
       return sdk::common::ExportResult::kFailure;
     }
+    else
+    {
+      OTEL_INTERNAL_LOG_DEBUG("[OTLP TRACE GRPC Exporter] Export " << resource_spans_size
+                                                                   << " trace span(s) success");
+    }
 #ifdef ENABLE_ASYNC_EXPORT
   }
 #endif

functional/otlp/CMakeLists.txt

@@ -3,6 +3,12 @@
 
 include_directories(${CMAKE_SOURCE_DIR}/exporters/otlp/include)
 
+if(WITH_OTLP_GRPC)
+  add_executable(func_otlp_grpc func_grpc_main.cc)
+  target_link_libraries(func_otlp_grpc ${CMAKE_THREAD_LIBS_INIT}
+                        opentelemetry_trace opentelemetry_exporter_otlp_grpc)
+endif()
+
 if(WITH_OTLP_HTTP)
   add_executable(func_otlp_http func_http_main.cc)
   target_link_libraries(func_otlp_http ${CMAKE_THREAD_LIBS_INIT}

functional/otlp/Dockerfile

@@ -4,4 +4,5 @@
 FROM otel/opentelemetry-collector
 COPY . .
 CMD ["--config", "/otel-cpp/otel-config.yaml"]
+EXPOSE 4317
 EXPOSE 4318