Add functional tests and add to build

Author: chusitoo

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

@@ -3,8 +3,16 @@
 
 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}
-                        opentelemetry_trace opentelemetry_exporter_otlp_http)
+                        opentelemetry_trace
+                        opentelemetry_exporter_otlp_http)
 endif()