Merge pull request #13883 from ncteisen/channel-tracing

Channel Tracing Implementation; Part 1

1 files changed, 99 insertions, 15 deletions

diff --git a/Makefile b/Makefile
index 3fa0f6617b..50889716bd 100644
--- a/Makefile
+++ b/Makefile
@@ -1129,6 +1129,7 @@ bm_pollset: $(BINDIR)/$(CONFIG)/bm_pollset
 byte_stream_test: $(BINDIR)/$(CONFIG)/byte_stream_test
 channel_arguments_test: $(BINDIR)/$(CONFIG)/channel_arguments_test
 channel_filter_test: $(BINDIR)/$(CONFIG)/channel_filter_test
+channel_trace_test: $(BINDIR)/$(CONFIG)/channel_trace_test
 check_gcp_environment_linux_test: $(BINDIR)/$(CONFIG)/check_gcp_environment_linux_test
 check_gcp_environment_windows_test: $(BINDIR)/$(CONFIG)/check_gcp_environment_windows_test
 chttp2_settings_timeout_test: $(BINDIR)/$(CONFIG)/chttp2_settings_timeout_test
@@ -1614,6 +1615,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/byte_stream_test \
   $(BINDIR)/$(CONFIG)/channel_arguments_test \
   $(BINDIR)/$(CONFIG)/channel_filter_test \
+  $(BINDIR)/$(CONFIG)/channel_trace_test \
   $(BINDIR)/$(CONFIG)/check_gcp_environment_linux_test \
   $(BINDIR)/$(CONFIG)/check_gcp_environment_windows_test \
   $(BINDIR)/$(CONFIG)/chttp2_settings_timeout_test \
@@ -1780,6 +1782,7 @@ buildtests_cxx: privatelibs_cxx \
   $(BINDIR)/$(CONFIG)/byte_stream_test \
   $(BINDIR)/$(CONFIG)/channel_arguments_test \
   $(BINDIR)/$(CONFIG)/channel_filter_test \
+  $(BINDIR)/$(CONFIG)/channel_trace_test \
   $(BINDIR)/$(CONFIG)/check_gcp_environment_linux_test \
   $(BINDIR)/$(CONFIG)/check_gcp_environment_windows_test \
   $(BINDIR)/$(CONFIG)/chttp2_settings_timeout_test \
@@ -2205,6 +2208,8 @@ test_cxx: buildtests_cxx
 	$(Q) $(BINDIR)/$(CONFIG)/channel_arguments_test || ( echo test channel_arguments_test failed ; exit 1 )
 	$(E) "[RUN]     Testing channel_filter_test"
 	$(Q) $(BINDIR)/$(CONFIG)/channel_filter_test || ( echo test channel_filter_test failed ; exit 1 )
+	$(E) "[RUN]     Testing channel_trace_test"
+	$(Q) $(BINDIR)/$(CONFIG)/channel_trace_test || ( echo test channel_trace_test failed ; exit 1 )
 	$(E) "[RUN]     Testing check_gcp_environment_linux_test"
 	$(Q) $(BINDIR)/$(CONFIG)/check_gcp_environment_linux_test || ( echo test check_gcp_environment_linux_test failed ; exit 1 )
 	$(E) "[RUN]     Testing check_gcp_environment_windows_test"
@@ -2444,6 +2449,22 @@ $(LIBDIR)/$(CONFIG)/pkgconfig/grpc++_unsecure.pc:
 	$(Q) echo "$(GRPCXX_UNSECURE_PC_FILE)" | tr , '\n' >$@
 
 ifeq ($(NO_PROTOC),true)
+$(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc: protoc_dep_error
+$(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc: protoc_dep_error
+else
+
+$(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc: src/proto/grpc/channelz/channelz.proto $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+	$(E) "[PROTOC]  Generating protobuf CC file from $<"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --cpp_out=$(GENDIR) $<
+
+$(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc: src/proto/grpc/channelz/channelz.proto $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(PROTOBUF_DEP) $(PROTOC_PLUGINS) 
+	$(E) "[GRPC]    Generating gRPC's protobuf service CC file from $<"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(PROTOC) -Ithird_party/protobuf/src -I. --grpc_out=$(GENDIR) --plugin=protoc-gen-grpc=$(PROTOC_PLUGINS_DIR)/grpc_cpp_plugin$(EXECUTABLE_SUFFIX) $<
+endif
+
+ifeq ($(NO_PROTOC),true)
 $(GENDIR)/src/proto/grpc/core/stats.pb.cc: protoc_dep_error
 $(GENDIR)/src/proto/grpc/core/stats.grpc.pb.cc: protoc_dep_error
 else
@@ -3160,10 +3181,13 @@ LIBGRPC_SRC = \
     src/core/lib/channel/channel_args.cc \
     src/core/lib/channel/channel_stack.cc \
     src/core/lib/channel/channel_stack_builder.cc \
+    src/core/lib/channel/channel_trace.cc \
+    src/core/lib/channel/channel_trace_registry.cc \
     src/core/lib/channel/connected_channel.cc \
     src/core/lib/channel/handshaker.cc \
     src/core/lib/channel/handshaker_factory.cc \
     src/core/lib/channel/handshaker_registry.cc \
+    src/core/lib/channel/status_util.cc \
     src/core/lib/compression/compression.cc \
     src/core/lib/compression/compression_internal.cc \
     src/core/lib/compression/message_compress.cc \
@@ -3412,7 +3436,6 @@ LIBGRPC_SRC = \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
-    src/core/ext/filters/client_channel/status_util.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
     src/core/ext/filters/client_channel/subchannel_index.cc \
     src/core/ext/filters/client_channel/uri_parser.cc \
@@ -3548,10 +3571,13 @@ LIBGRPC_CRONET_SRC = \
     src/core/lib/channel/channel_args.cc \
     src/core/lib/channel/channel_stack.cc \
     src/core/lib/channel/channel_stack_builder.cc \
+    src/core/lib/channel/channel_trace.cc \
+    src/core/lib/channel/channel_trace_registry.cc \
     src/core/lib/channel/connected_channel.cc \
     src/core/lib/channel/handshaker.cc \
     src/core/lib/channel/handshaker_factory.cc \
     src/core/lib/channel/handshaker_registry.cc \
+    src/core/lib/channel/status_util.cc \
     src/core/lib/compression/compression.cc \
     src/core/lib/compression/compression_internal.cc \
     src/core/lib/compression/message_compress.cc \
@@ -3738,7 +3764,6 @@ LIBGRPC_CRONET_SRC = \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
-    src/core/ext/filters/client_channel/status_util.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
     src/core/ext/filters/client_channel/subchannel_index.cc \
     src/core/ext/filters/client_channel/uri_parser.cc \
@@ -3926,10 +3951,13 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/lib/channel/channel_args.cc \
     src/core/lib/channel/channel_stack.cc \
     src/core/lib/channel/channel_stack_builder.cc \
+    src/core/lib/channel/channel_trace.cc \
+    src/core/lib/channel/channel_trace_registry.cc \
     src/core/lib/channel/connected_channel.cc \
     src/core/lib/channel/handshaker.cc \
     src/core/lib/channel/handshaker_factory.cc \
     src/core/lib/channel/handshaker_registry.cc \
+    src/core/lib/channel/status_util.cc \
     src/core/lib/compression/compression.cc \
     src/core/lib/compression/compression_internal.cc \
     src/core/lib/compression/message_compress.cc \
@@ -4085,7 +4113,6 @@ LIBGRPC_TEST_UTIL_SRC = \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
-    src/core/ext/filters/client_channel/status_util.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
     src/core/ext/filters/client_channel/subchannel_index.cc \
     src/core/ext/filters/client_channel/uri_parser.cc \
@@ -4219,10 +4246,13 @@ LIBGRPC_TEST_UTIL_UNSECURE_SRC = \
     src/core/lib/channel/channel_args.cc \
     src/core/lib/channel/channel_stack.cc \
     src/core/lib/channel/channel_stack_builder.cc \
+    src/core/lib/channel/channel_trace.cc \
+    src/core/lib/channel/channel_trace_registry.cc \
     src/core/lib/channel/connected_channel.cc \
     src/core/lib/channel/handshaker.cc \
     src/core/lib/channel/handshaker_factory.cc \
     src/core/lib/channel/handshaker_registry.cc \
+    src/core/lib/channel/status_util.cc \
     src/core/lib/compression/compression.cc \
     src/core/lib/compression/compression_internal.cc \
     src/core/lib/compression/message_compress.cc \
@@ -4378,7 +4408,6 @@ LIBGRPC_TEST_UTIL_UNSECURE_SRC = \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
-    src/core/ext/filters/client_channel/status_util.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
     src/core/ext/filters/client_channel/subchannel_index.cc \
     src/core/ext/filters/client_channel/uri_parser.cc \
@@ -4479,10 +4508,13 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/lib/channel/channel_args.cc \
     src/core/lib/channel/channel_stack.cc \
     src/core/lib/channel/channel_stack_builder.cc \
+    src/core/lib/channel/channel_trace.cc \
+    src/core/lib/channel/channel_trace_registry.cc \
     src/core/lib/channel/connected_channel.cc \
     src/core/lib/channel/handshaker.cc \
     src/core/lib/channel/handshaker_factory.cc \
     src/core/lib/channel/handshaker_registry.cc \
+    src/core/lib/channel/status_util.cc \
     src/core/lib/compression/compression.cc \
     src/core/lib/compression/compression_internal.cc \
     src/core/lib/compression/message_compress.cc \
@@ -4671,7 +4703,6 @@ LIBGRPC_UNSECURE_SRC = \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
-    src/core/ext/filters/client_channel/status_util.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
     src/core/ext/filters/client_channel/subchannel_index.cc \
     src/core/ext/filters/client_channel/uri_parser.cc \
@@ -5292,10 +5323,13 @@ LIBGRPC++_CRONET_SRC = \
     src/core/lib/channel/channel_args.cc \
     src/core/lib/channel/channel_stack.cc \
     src/core/lib/channel/channel_stack_builder.cc \
+    src/core/lib/channel/channel_trace.cc \
+    src/core/lib/channel/channel_trace_registry.cc \
     src/core/lib/channel/connected_channel.cc \
     src/core/lib/channel/handshaker.cc \
     src/core/lib/channel/handshaker_factory.cc \
     src/core/lib/channel/handshaker_registry.cc \
+    src/core/lib/channel/status_util.cc \
     src/core/lib/compression/compression.cc \
     src/core/lib/compression/compression_internal.cc \
     src/core/lib/compression/message_compress.cc \
@@ -5456,7 +5490,6 @@ LIBGRPC++_CRONET_SRC = \
     src/core/ext/filters/client_channel/resolver.cc \
     src/core/ext/filters/client_channel/resolver_registry.cc \
     src/core/ext/filters/client_channel/retry_throttle.cc \
-    src/core/ext/filters/client_channel/status_util.cc \
     src/core/ext/filters/client_channel/subchannel.cc \
     src/core/ext/filters/client_channel/subchannel_index.cc \
     src/core/ext/filters/client_channel/uri_parser.cc \
@@ -5984,12 +6017,14 @@ endif
 
 
 LIBGRPC++_TEST_UTIL_SRC = \
+    $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc \
     $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc \
     test/cpp/end2end/test_service_impl.cc \
     test/cpp/util/byte_buffer_proto_helper.cc \
+    test/cpp/util/channel_trace_proto_helper.cc \
     test/cpp/util/create_test_channel.cc \
     test/cpp/util/string_ref_helper.cc \
     test/cpp/util/subprocess.cc \
@@ -6125,13 +6160,14 @@ ifneq ($(NO_DEPS),true)
 -include $(LIBGRPC++_TEST_UTIL_OBJS:.o=.dep)
 endif
 endif
-$(OBJDIR)/$(CONFIG)/test/cpp/end2end/test_service_impl.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/byte_buffer_proto_helper.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/create_test_channel.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/string_ref_helper.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/subprocess.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/test/cpp/util/test_credentials_provider.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
-$(OBJDIR)/$(CONFIG)/src/cpp/codegen/codegen_init.o: $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/end2end/test_service_impl.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/byte_buffer_proto_helper.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/channel_trace_proto_helper.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/create_test_channel.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/string_ref_helper.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/subprocess.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/test/cpp/util/test_credentials_provider.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
+$(OBJDIR)/$(CONFIG)/src/cpp/codegen/codegen_init.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.pb.cc $(GENDIR)/src/proto/grpc/health/v1/health.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.pb.cc $(GENDIR)/src/proto/grpc/testing/echo_messages.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.pb.cc $(GENDIR)/src/proto/grpc/testing/echo.grpc.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.pb.cc $(GENDIR)/src/proto/grpc/testing/duplicate/echo_duplicate.grpc.pb.cc
 
 
 LIBGRPC++_TEST_UTIL_UNSECURE_SRC = \
@@ -15989,6 +16025,53 @@ endif
 endif
 
 
+CHANNEL_TRACE_TEST_SRC = \
+    test/core/channel/channel_trace_test.cc \
+    $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc \
+
+CHANNEL_TRACE_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(CHANNEL_TRACE_TEST_SRC))))
+ifeq ($(NO_SECURE),true)
+
+# You can't build secure targets if you don't have OpenSSL.
+
+$(BINDIR)/$(CONFIG)/channel_trace_test: openssl_dep_error
+
+else
+
+
+
+
+ifeq ($(NO_PROTOBUF),true)
+
+# You can't build the protoc plugins or protobuf-enabled targets if you don't have protobuf 3.0.0+.
+
+$(BINDIR)/$(CONFIG)/channel_trace_test: protobuf_dep_error
+
+else
+
+$(BINDIR)/$(CONFIG)/channel_trace_test: $(PROTOBUF_DEP) $(CHANNEL_TRACE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+	$(E) "[LD]      Linking $@"
+	$(Q) mkdir -p `dirname $@`
+	$(Q) $(LDXX) $(LDFLAGS) $(CHANNEL_TRACE_TEST_OBJS) $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a $(LDLIBSXX) $(LDLIBS_PROTOBUF) $(LDLIBS) $(LDLIBS_SECURE) $(GTEST_LIB) -o $(BINDIR)/$(CONFIG)/channel_trace_test
+
+endif
+
+endif
+
+$(OBJDIR)/$(CONFIG)/test/core/channel/channel_trace_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+$(OBJDIR)/$(CONFIG)/src/proto/grpc/channelz/channelz.o:  $(LIBDIR)/$(CONFIG)/libgrpc_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++_test_util.a $(LIBDIR)/$(CONFIG)/libgrpc++.a $(LIBDIR)/$(CONFIG)/libgrpc.a $(LIBDIR)/$(CONFIG)/libgpr_test_util.a $(LIBDIR)/$(CONFIG)/libgpr.a
+
+deps_channel_trace_test: $(CHANNEL_TRACE_TEST_OBJS:.o=.dep)
+
+ifneq ($(NO_SECURE),true)
+ifneq ($(NO_DEPS),true)
+-include $(CHANNEL_TRACE_TEST_OBJS:.o=.dep)
+endif
+endif
+$(OBJDIR)/$(CONFIG)/test/core/channel/channel_trace_test.o: $(GENDIR)/src/proto/grpc/channelz/channelz.pb.cc $(GENDIR)/src/proto/grpc/channelz/channelz.grpc.pb.cc
+
+
 CHECK_GCP_ENVIRONMENT_LINUX_TEST_SRC = \
     test/core/security/check_gcp_environment_linux_test.cc \
 
@@ -19111,7 +19194,7 @@ endif
 
 
 STATUS_UTIL_TEST_SRC = \
-    test/core/client_channel/status_util_test.cc \
+    test/core/channel/status_util_test.cc \
 
 STATUS_UTIL_TEST_OBJS = $(addprefix $(OBJDIR)/$(CONFIG)/, $(addsuffix .o, $(basename $(STATUS_UTIL_TEST_SRC))))
 ifeq ($(NO_SECURE),true)
@@ -19142,7 +19225,7 @@ endif
 
 endif
 
-$(OBJDIR)/$(CONFIG)/test/core/client_channel/status_util_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a
+$(OBJDIR)/$(CONFIG)/test/core/channel/status_util_test.o:  $(LIBDIR)/$(CONFIG)/libgrpc.a
 
 deps_status_util_test: $(STATUS_UTIL_TEST_OBJS:.o=.dep)
 
@@ -23554,6 +23637,7 @@ test/cpp/qps/server_async.cc: $(OPENSSL_DEP)
 test/cpp/qps/server_sync.cc: $(OPENSSL_DEP)
 test/cpp/qps/usage_timer.cc: $(OPENSSL_DEP)
 test/cpp/util/byte_buffer_proto_helper.cc: $(OPENSSL_DEP)
+test/cpp/util/channel_trace_proto_helper.cc: $(OPENSSL_DEP)
 test/cpp/util/cli_call.cc: $(OPENSSL_DEP)
 test/cpp/util/cli_credentials.cc: $(OPENSSL_DEP)
 test/cpp/util/create_test_channel.cc: $(OPENSSL_DEP)