ETW Tracer exporter

CMakeLists.txt

@@ -82,6 +82,16 @@ option(WITH_ELASTICSEARCH
        "Whether to include the Elasticsearch Client in the SDK" OFF)
 
 option(BUILD_TESTING "Whether to enable tests" ON)
+if(WIN32)
+  option(WITH_ETW "Whether to include the ETW Exporter in the SDK" ON)
+  if(WITH_ETW)
+    add_definitions(-DHAVE_MSGPACK)
+    # Option below will be removed once we donate the TraceLoggingDynamic.h to
+    # OSS
+    add_definitions(-DHAVE_NO_TLD)
+  endif(WITH_ETW)
+endif(WIN32)
+
 option(WITH_EXAMPLES "Whether to build examples" ON)
 
 find_package(Threads)

api/include/opentelemetry/trace/propagation/http_trace_context.h

@@ -129,7 +129,7 @@ class HttpTraceContext : public HTTPTextFormat<T>
   // Converts the hex numbers stored as strings into bytes stored in a buffer.
   static void GenerateHexFromString(nostd::string_view string, int bytes, uint8_t *buf)
   {
-    const char *str_id = string.begin();
+    const char *str_id = string.data();
     for (int i = 0; i < bytes; i++)
     {
       int tmp = HexToInt(str_id[i]);

exporters/CMakeLists.txt

@@ -12,3 +12,7 @@ endif()
 if(WITH_ELASTICSEARCH)
   add_subdirectory(elasticsearch)
 endif()
+
+if(WITH_ETW)
+  add_subdirectory(etw)
+endif()

exporters/etw/BUILD

@@ -0,0 +1,55 @@
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "etw_provider_exporter",
+    srcs = [
+        "src/etw_provider_exporter.cc",
+    ],
+    hdrs = [
+        "include/opentelemetry/exporters/etw/etw_provider_exporter.h",
+        "include/opentelemetry/exporters/etw/utils.h",
+        "include/opentelemetry/exporters/etw/uuid.hpp",
+    ],
+    strip_include_prefix = "include",
+    deps = [
+        "//api",
+        "//sdk/src/trace",
+    ],
+)
+
+cc_test(
+    name = "etw_provider_test",
+    srcs = ["test/etw_provider_test.cc"],
+    deps = [
+        ":etw_provider_exporter",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
+cc_library(
+    name = "etw_tracer_exporter",
+    srcs = [
+        "src/etw_tracer_exporter.cc",
+    ],
+    hdrs = [
+        "include/opentelemetry/exporters/etw/etw_data.h",
+        "include/opentelemetry/exporters/etw/etw_tracer_exporter.h",
+        "include/opentelemetry/exporters/etw/utils.h",
+        "include/opentelemetry/exporters/etw/uuid.hpp",
+    ],
+    strip_include_prefix = "include",
+    deps = [
+        ":etw_provider_exporter",
+        "//api",
+        "//sdk/src/trace",
+    ],
+)
+
+cc_test(
+    name = "etw_tracer_test",
+    srcs = ["test/etw_tracer_test.cc"],
+    deps = [
+        ":etw_tracer_exporter",
+        "@com_google_googletest//:gtest_main",
+    ],
+)

exporters/etw/CMakeLists.txt

@@ -0,0 +1,26 @@
+include_directories(include)
+
+add_library(opentelemetry_exporter_etw_provider src/etw_provider_exporter.cc)
+add_library(opentelemetry_exporter_etw_tracer src/etw_tracer_exporter.cc)
+
+if(BUILD_TESTING)
+  add_executable(etw_provider_test test/etw_provider_test.cc)
+  add_executable(etw_tracer_test test/etw_tracer_test.cc)
+
+  target_link_libraries(
+    etw_provider_test ${GTEST_BOTH_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT}
+    opentelemetry_exporter_etw_provider)
+
+  target_link_libraries(
+    etw_tracer_test ${GTEST_BOTH_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT}
+    opentelemetry_exporter_etw_tracer)
+
+  gtest_add_tests(
+    TARGET etw_provider_test
+    TEST_PREFIX exporter.
+    TEST_LIST etw_provider_test)
+  gtest_add_tests(
+    TARGET etw_tracer_test
+    TEST_PREFIX exporter.
+    TEST_LIST etw_tracer_test)
+endif() # BUILD_TESTING