mirror of https://github.com/grpc/grpc.git
[OTel] Generate pkg-config file for grpcpp_otel_plugin (#36686)
Public Changes - * Add a pkgconfig installer for `grpcpp_otel_plugin` Example Changes - * Add example of how to use the pkgconfig for `grpcpp_otel_plugin` with the existing OpenTelemetry example. * Add another OpenTelemetry example that uses OTel's OStream exporter. This makes it easier to test the pkgconfig file for `grpcpp_otel_plugin` since the OStream exporter does not require any additional dependencies, as opposed to the Prometheus exporter. Test changes - * Modify `run_distrib_test_cmake_pkgconfig.sh` test to install opentelemetry and build the example with the OStream exporter. Closes #36686 PiperOrigin-RevId: 636965475pull/36695/head^2
Yash Tibrewal
6 months ago
committed by
Copybara-Service
parent
3df8e0787f
commit
ac303a09f6
15 changed files with 741 additions and 142 deletions
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#
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# Copyright 2015 gRPC authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# TODO(jtattermusch): Remove the hack to workaround protobuf bug. See https://github.com/protocolbuffers/protobuf/issues/12439
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# Hack: protobuf currently doesn't declare it's absl dependencies when protobuf.pc pkgconfig file is used.
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PROTOBUF_ABSL_DEPS = absl_absl_check absl_absl_log absl_algorithm absl_base absl_bind_front absl_bits absl_btree absl_cleanup absl_cord absl_core_headers absl_debugging absl_die_if_null absl_dynamic_annotations absl_flags absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_layout absl_log_initialize absl_log_severity absl_memory absl_node_hash_map absl_node_hash_set absl_optional absl_span absl_status absl_statusor absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant
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# TODO(jtattermusch): Remove the hack to workaround protobuf/utf8_range bug. See https://github.com/protocolbuffers/utf8_range/issues/20
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# Hack: utf8_range (which is protobuf's dependency) currently doesn't have a pkgconfig file, so we need to explicitly
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# tweak the list of libraries to link against to fix the build.
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PROTOBUF_UTF8_RANGE_LINK_LIBS = -lutf8_validity
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OPENTELEMETRY_LINK_LIBS = -lopentelemetry_metrics -lopentelemetry_exporter_prometheus -lopentelemetry_common -lopentelemetry_resources -lprometheus-cpp-pull -lprometheus-cpp-core
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HOST_SYSTEM = $(shell uname | cut -f 1 -d_)
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SYSTEM ?= $(HOST_SYSTEM)
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CXX = g++
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CPPFLAGS += `pkg-config --cflags protobuf grpc absl_flags absl_flags_parse`
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ifeq ($(SYSTEM),Darwin) |
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LDFLAGS += -L/usr/local/lib `pkg-config --libs --static protobuf grpc++ grpcpp_otel_plugin absl_flags absl_flags_parse $(PROTOBUF_ABSL_DEPS)` \
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$(PROTOBUF_UTF8_RANGE_LINK_LIBS) \
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$(OPENTELEMETRY_LINK_LIBS) \
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-pthread \
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-lgrpc++_reflection \
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-ldl
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else |
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LDFLAGS += -L/usr/local/lib `pkg-config --libs --static protobuf grpc++ grpcpp_otel_plugin absl_flags absl_flags_parse $(PROTOBUF_ABSL_DEPS)` \
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$(PROTOBUF_UTF8_RANGE_LINK_LIBS) \
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$(OPENTELEMETRY_LINK_LIBS) \
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-pthread \
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-Wl,--no-as-needed -lgrpc++_reflection -Wl,--as-needed \
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-ldl
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endif |
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PROTOC = protoc
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GRPC_CPP_PLUGIN = grpc_cpp_plugin
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GRPC_CPP_PLUGIN_PATH ?= `which $(GRPC_CPP_PLUGIN)`
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PROTOS_PATH = ../../protos
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vpath %.proto $(PROTOS_PATH) |
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all: system-check greeter_callback_client greeter_callback_server |
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greeter_callback_client: util.o helloworld.pb.o helloworld.grpc.pb.o greeter_callback_client.o |
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$(CXX) $^ $(LDFLAGS) -o $@
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greeter_callback_server: util.o helloworld.pb.o helloworld.grpc.pb.o greeter_callback_server.o |
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$(CXX) $^ $(LDFLAGS) -o $@
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.PRECIOUS: %.grpc.pb.cc |
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%.grpc.pb.cc: %.proto |
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$(PROTOC) -I $(PROTOS_PATH) --grpc_out=. --plugin=protoc-gen-grpc=$(GRPC_CPP_PLUGIN_PATH) $<
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.PRECIOUS: %.pb.cc |
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%.pb.cc: %.proto |
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$(PROTOC) -I $(PROTOS_PATH) --cpp_out=. $<
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clean: |
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rm -f *.o *.pb.cc *.pb.h greeter_callback_client greeter_callback_server
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# The following is to test your system and ensure a smoother experience.
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# They are by no means necessary to actually compile a grpc-enabled software.
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PROTOC_CMD = which $(PROTOC)
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PROTOC_CHECK_CMD = $(PROTOC) --version | grep -q 'libprotoc.3\|libprotoc [0-9][0-9]\.'
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PLUGIN_CHECK_CMD = which $(GRPC_CPP_PLUGIN)
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HAS_PROTOC = $(shell $(PROTOC_CMD) > /dev/null && echo true || echo false)
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ifeq ($(HAS_PROTOC),true) |
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HAS_VALID_PROTOC = $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
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endif |
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HAS_PLUGIN = $(shell $(PLUGIN_CHECK_CMD) > /dev/null && echo true || echo false)
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SYSTEM_OK = false
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ifeq ($(HAS_VALID_PROTOC),true) |
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ifeq ($(HAS_PLUGIN),true) |
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SYSTEM_OK = true
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endif |
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endif |
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system-check: |
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ifneq ($(HAS_VALID_PROTOC),true) |
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@echo " DEPENDENCY ERROR"
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@echo
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@echo "You don't have protoc 3.0.0 or newer installed in your path."
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@echo "Please install an up-to-date version of Google protocol buffers."
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@echo "You can find it here:"
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@echo
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@echo " https://github.com/protocolbuffers/protobuf/releases"
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@echo
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@echo "Here is what I get when trying to evaluate your version of protoc:"
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@echo
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-$(PROTOC) --version
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@echo
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@echo
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endif |
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ifneq ($(HAS_PLUGIN),true) |
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@echo " DEPENDENCY ERROR"
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@echo
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@echo "You don't have the grpc c++ protobuf plugin installed in your path."
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@echo "Please install grpc. You can find it here:"
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@echo
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@echo " https://github.com/grpc/grpc"
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@echo
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@echo "Here is what I get when trying to detect if you have the plugin:"
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@echo
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-which $(GRPC_CPP_PLUGIN)
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@echo
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@echo
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endif |
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ifneq ($(SYSTEM_OK),true) |
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@false
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endif |
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@ -0,0 +1,44 @@ |
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# Copyright 2023 the gRPC authors. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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licenses(["notice"]) |
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cc_binary( |
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name = "greeter_callback_client", |
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srcs = ["greeter_callback_client.cc"], |
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defines = ["BAZEL_BUILD"], |
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deps = [ |
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"//:grpcpp_otel_plugin", |
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"//examples/cpp/otel:util", |
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"@com_google_absl//absl/flags:flag", |
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"@com_google_absl//absl/flags:parse", |
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"@io_opentelemetry_cpp//exporters/ostream:ostream_metric_exporter", |
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"@io_opentelemetry_cpp//sdk/src/metrics", |
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], |
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) |
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cc_binary( |
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name = "greeter_callback_server", |
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srcs = ["greeter_callback_server.cc"], |
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defines = ["BAZEL_BUILD"], |
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deps = [ |
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"//:grpcpp_otel_plugin", |
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"//examples/cpp/otel:util", |
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"@com_google_absl//absl/flags:flag", |
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"@com_google_absl//absl/flags:parse", |
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"@com_google_absl//absl/strings:str_format", |
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"@io_opentelemetry_cpp//exporters/ostream:ostream_metric_exporter", |
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"@io_opentelemetry_cpp//sdk/src/metrics", |
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], |
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) |
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@ -0,0 +1,85 @@ |
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# Copyright 2018 gRPC authors. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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# |
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# cmake build file for C++ gRPC OpenTelemetry example. |
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# Assumes absl, protobuf, prometheus-cpp, opentelemetry-cpp and gRPC (with -DgRPC_BUILD_OPENTELEMETRY_PLUGIN=ON) have been installed using cmake. |
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# See cmake_externalproject/CMakeLists.txt for all-in-one cmake build |
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# that automatically builds all the dependencies before building helloworld. |
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cmake_minimum_required(VERSION 3.13) |
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project(grpc_opentelemetry_example C CXX) |
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include(../../cmake/common.cmake) |
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# Find opentelemetry-cpp package |
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find_package(opentelemetry-cpp CONFIG REQUIRED) |
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# Proto file |
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get_filename_component(hw_proto "../../../protos/helloworld.proto" ABSOLUTE) |
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get_filename_component(hw_proto_path "${hw_proto}" PATH) |
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# Generated sources |
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set(hw_proto_srcs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.pb.cc") |
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set(hw_proto_hdrs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.pb.h") |
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set(hw_grpc_srcs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.grpc.pb.cc") |
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set(hw_grpc_hdrs "${CMAKE_CURRENT_BINARY_DIR}/helloworld.grpc.pb.h") |
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add_custom_command( |
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OUTPUT "${hw_proto_srcs}" "${hw_proto_hdrs}" "${hw_grpc_srcs}" "${hw_grpc_hdrs}" |
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COMMAND ${_PROTOBUF_PROTOC} |
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ARGS --grpc_out "${CMAKE_CURRENT_BINARY_DIR}" |
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--cpp_out "${CMAKE_CURRENT_BINARY_DIR}" |
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-I "${hw_proto_path}" |
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--plugin=protoc-gen-grpc="${_GRPC_CPP_PLUGIN_EXECUTABLE}" |
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"${hw_proto}" |
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DEPENDS "${hw_proto}") |
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# Include generated *.pb.h files |
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include_directories("${CMAKE_CURRENT_BINARY_DIR}") |
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include_directories("${CMAKE_SOURCE_DIR}") |
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# hw_grpc_proto |
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add_library(hw_grpc_proto |
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${hw_grpc_srcs} |
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${hw_grpc_hdrs} |
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${hw_proto_srcs} |
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${hw_proto_hdrs}) |
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target_link_libraries(hw_grpc_proto |
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${_REFLECTION} |
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${_GRPC_GRPCPP} |
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${_PROTOBUF_LIBPROTOBUF}) |
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# util |
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add_library(util |
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"../util.cc") |
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target_link_libraries(util |
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hw_grpc_proto |
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opentelemetry-cpp::metrics |
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${_GRPC_GRPCPP} |
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${_REFLECTION} |
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${_PROTOBUF_LIBPROTOBUF}) |
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# Targets greeter_callback_(client|server) |
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foreach(_target |
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greeter_callback_client greeter_callback_server) |
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add_executable(${_target} "${_target}.cc") |
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target_link_libraries(${_target} |
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absl::flags |
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absl::flags_parse |
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opentelemetry-cpp::metrics |
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opentelemetry-cpp::ostream_metrics_exporter |
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gRPC::grpcpp_otel_plugin |
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util |
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${_PROTOBUF_LIBPROTOBUF}) |
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endforeach() |
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@ -0,0 +1,127 @@ |
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#
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# Copyright 2015 gRPC authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# TODO(jtattermusch): Remove the hack to workaround protobuf bug. See https://github.com/protocolbuffers/protobuf/issues/12439
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# Hack: protobuf currently doesn't declare it's absl dependencies when protobuf.pc pkgconfig file is used.
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PROTOBUF_ABSL_DEPS = absl_absl_check absl_absl_log absl_algorithm absl_base absl_bind_front absl_bits absl_btree absl_cleanup absl_cord absl_core_headers absl_debugging absl_die_if_null absl_dynamic_annotations absl_flags absl_flat_hash_map absl_flat_hash_set absl_function_ref absl_hash absl_layout absl_log_initialize absl_log_severity absl_memory absl_node_hash_map absl_node_hash_set absl_optional absl_span absl_status absl_statusor absl_strings absl_synchronization absl_time absl_type_traits absl_utility absl_variant
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# TODO(jtattermusch): Remove the hack to workaround protobuf/utf8_range bug. See https://github.com/protocolbuffers/utf8_range/issues/20
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# Hack: utf8_range (which is protobuf's dependency) currently doesn't have a pkgconfig file, so we need to explicitly
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# tweak the list of libraries to link against to fix the build.
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PROTOBUF_UTF8_RANGE_LINK_LIBS = -lutf8_validity
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OPENTELEMETRY_LINK_LIBS = -lopentelemetry_metrics -lopentelemetry_exporter_ostream_metrics -lopentelemetry_resources -lopentelemetry_common
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HOST_SYSTEM = $(shell uname | cut -f 1 -d_)
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SYSTEM ?= $(HOST_SYSTEM)
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CXX = g++
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CPPFLAGS += `pkg-config --cflags protobuf grpc absl_flags absl_flags_parse`
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ifeq ($(SYSTEM),Darwin) |
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LDFLAGS += -L/usr/local/lib `pkg-config --libs --static protobuf grpc++ grpcpp_otel_plugin absl_flags absl_flags_parse $(PROTOBUF_ABSL_DEPS)` \
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$(PROTOBUF_UTF8_RANGE_LINK_LIBS) \
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$(OPENTELEMETRY_LINK_LIBS) \
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-pthread \
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-lgrpc++_reflection \
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-ldl
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else |
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LDFLAGS += -L/usr/local/lib `pkg-config --libs --static protobuf grpc++ grpcpp_otel_plugin absl_flags absl_flags_parse $(PROTOBUF_ABSL_DEPS)` \
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$(PROTOBUF_UTF8_RANGE_LINK_LIBS) \
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$(OPENTELEMETRY_LINK_LIBS) \
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-pthread \
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-Wl,--no-as-needed -lgrpc++_reflection -Wl,--as-needed \
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-ldl
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endif |
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PROTOC = protoc
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GRPC_CPP_PLUGIN = grpc_cpp_plugin
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GRPC_CPP_PLUGIN_PATH ?= `which $(GRPC_CPP_PLUGIN)`
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PROTOS_PATH = ../../../protos
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vpath %.proto $(PROTOS_PATH) |
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all: system-check greeter_callback_client greeter_callback_server |
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greeter_callback_client: util.o helloworld.pb.o helloworld.grpc.pb.o greeter_callback_client.o |
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$(CXX) $^ $(LDFLAGS) -o $@
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greeter_callback_server: util.o helloworld.pb.o helloworld.grpc.pb.o greeter_callback_server.o |
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$(CXX) $^ $(LDFLAGS) -o $@
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.PRECIOUS: %.grpc.pb.cc |
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%.grpc.pb.cc: %.proto |
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$(PROTOC) -I $(PROTOS_PATH) --grpc_out=. --plugin=protoc-gen-grpc=$(GRPC_CPP_PLUGIN_PATH) $<
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.PRECIOUS: %.pb.cc |
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%.pb.cc: %.proto |
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$(PROTOC) -I $(PROTOS_PATH) --cpp_out=. $<
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util.o: ../util.cc |
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$(CXX) $^ -I . -I $(CPPFLAGS) -c -o $@
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||||||
|
clean: |
||||||
|
rm -f *.o *.pb.cc *.pb.h greeter_callback_client greeter_callback_server
|
||||||
|
|
||||||
|
|
||||||
|
# The following is to test your system and ensure a smoother experience.
|
||||||
|
# They are by no means necessary to actually compile a grpc-enabled software.
|
||||||
|
|
||||||
|
PROTOC_CMD = which $(PROTOC)
|
||||||
|
PROTOC_CHECK_CMD = $(PROTOC) --version | grep -q 'libprotoc.3\|libprotoc [0-9][0-9]\.'
|
||||||
|
PLUGIN_CHECK_CMD = which $(GRPC_CPP_PLUGIN)
|
||||||
|
HAS_PROTOC = $(shell $(PROTOC_CMD) > /dev/null && echo true || echo false)
|
||||||
|
ifeq ($(HAS_PROTOC),true) |
||||||
|
HAS_VALID_PROTOC = $(shell $(PROTOC_CHECK_CMD) 2> /dev/null && echo true || echo false)
|
||||||
|
endif |
||||||
|
HAS_PLUGIN = $(shell $(PLUGIN_CHECK_CMD) > /dev/null && echo true || echo false)
|
||||||
|
|
||||||
|
SYSTEM_OK = false
|
||||||
|
ifeq ($(HAS_VALID_PROTOC),true) |
||||||
|
ifeq ($(HAS_PLUGIN),true) |
||||||
|
SYSTEM_OK = true
|
||||||
|
endif |
||||||
|
endif |
||||||
|
|
||||||
|
system-check: |
||||||
|
ifneq ($(HAS_VALID_PROTOC),true) |
||||||
|
@echo " DEPENDENCY ERROR"
|
||||||
|
@echo
|
||||||
|
@echo "You don't have protoc 3.0.0 or newer installed in your path."
|
||||||
|
@echo "Please install an up-to-date version of Google protocol buffers."
|
||||||
|
@echo "You can find it here:"
|
||||||
|
@echo
|
||||||
|
@echo " https://github.com/protocolbuffers/protobuf/releases"
|
||||||
|
@echo
|
||||||
|
@echo "Here is what I get when trying to evaluate your version of protoc:"
|
||||||
|
@echo
|
||||||
|
-$(PROTOC) --version
|
||||||
|
@echo
|
||||||
|
@echo
|
||||||
|
endif |
||||||
|
ifneq ($(HAS_PLUGIN),true) |
||||||
|
@echo " DEPENDENCY ERROR"
|
||||||
|
@echo
|
||||||
|
@echo "You don't have the grpc c++ protobuf plugin installed in your path."
|
||||||
|
@echo "Please install grpc. You can find it here:"
|
||||||
|
@echo
|
||||||
|
@echo " https://github.com/grpc/grpc"
|
||||||
|
@echo
|
||||||
|
@echo "Here is what I get when trying to detect if you have the plugin:"
|
||||||
|
@echo
|
||||||
|
-which $(GRPC_CPP_PLUGIN)
|
||||||
|
@echo
|
||||||
|
@echo
|
||||||
|
endif |
||||||
|
ifneq ($(SYSTEM_OK),true) |
||||||
|
@false
|
||||||
|
endif |
||||||
@ -0,0 +1,79 @@ |
|||||||
|
/*
|
||||||
|
* |
||||||
|
* Copyright 2021 gRPC authors. |
||||||
|
* |
||||||
|
* Licensed under the Apache License, Version 2.0 (the "License"); |
||||||
|
* you may not use this file except in compliance with the License. |
||||||
|
* You may obtain a copy of the License at |
||||||
|
* |
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
* |
||||||
|
* Unless required by applicable law or agreed to in writing, software |
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS, |
||||||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||||||
|
* See the License for the specific language governing permissions and |
||||||
|
* limitations under the License. |
||||||
|
* |
||||||
|
*/ |
||||||
|
|
||||||
|
// Explicitly define HAVE_ABSEIL to avoid conflict with OTel's Abseil
|
||||||
|
// version. Refer
|
||||||
|
// https://github.com/open-telemetry/opentelemetry-cpp/issues/1042.
|
||||||
|
#ifndef HAVE_ABSEIL |
||||||
|
#define HAVE_ABSEIL |
||||||
|
#endif |
||||||
|
|
||||||
|
#include <string> |
||||||
|
|
||||||
|
#include "absl/flags/flag.h" |
||||||
|
#include "absl/flags/parse.h" |
||||||
|
#include "opentelemetry/exporters/ostream/metric_exporter.h" |
||||||
|
#include "opentelemetry/exporters/ostream/metric_exporter_factory.h" |
||||||
|
#include "opentelemetry/sdk/metrics/export/periodic_exporting_metric_reader.h" |
||||||
|
#include "opentelemetry/sdk/metrics/export/periodic_exporting_metric_reader_factory.h" |
||||||
|
#include "opentelemetry/sdk/metrics/meter_provider.h" |
||||||
|
|
||||||
|
#include <grpcpp/ext/otel_plugin.h> |
||||||
|
|
||||||
|
#ifdef BAZEL_BUILD |
||||||
|
#include "examples/cpp/otel/util.h" |
||||||
|
#else |
||||||
|
#include "../util.h" |
||||||
|
#endif |
||||||
|
|
||||||
|
ABSL_FLAG(std::string, target, "localhost:50051", "Server address"); |
||||||
|
|
||||||
|
int main(int argc, char** argv) { |
||||||
|
absl::ParseCommandLine(argc, argv); |
||||||
|
// Register a global gRPC OpenTelemetry plugin configured with an ostream
|
||||||
|
// exporter.
|
||||||
|
auto ostream_exporter = |
||||||
|
opentelemetry::exporter::metrics::OStreamMetricExporterFactory::Create(); |
||||||
|
opentelemetry::sdk::metrics::PeriodicExportingMetricReaderOptions |
||||||
|
reader_options; |
||||||
|
reader_options.export_interval_millis = std::chrono::milliseconds(1000); |
||||||
|
reader_options.export_timeout_millis = std::chrono::milliseconds(500); |
||||||
|
auto reader = |
||||||
|
opentelemetry::sdk::metrics::PeriodicExportingMetricReaderFactory::Create( |
||||||
|
std::move(ostream_exporter), reader_options); |
||||||
|
auto meter_provider = |
||||||
|
std::make_shared<opentelemetry::sdk::metrics::MeterProvider>(); |
||||||
|
// The default histogram boundaries are not granular enough for RPCs. Override
|
||||||
|
// the "grpc.client.attempt.duration" view as recommended by
|
||||||
|
// https://github.com/grpc/proposal/blob/master/A66-otel-stats.md.
|
||||||
|
AddLatencyView(meter_provider.get(), "grpc.client.attempt.duration", "s"); |
||||||
|
meter_provider->AddMetricReader(std::move(reader)); |
||||||
|
auto status = grpc::OpenTelemetryPluginBuilder() |
||||||
|
.SetMeterProvider(std::move(meter_provider)) |
||||||
|
.BuildAndRegisterGlobal(); |
||||||
|
if (!status.ok()) { |
||||||
|
std::cerr << "Failed to register gRPC OpenTelemetry Plugin: " |
||||||
|
<< status.ToString() << std::endl; |
||||||
|
return static_cast<int>(status.code()); |
||||||
|
} |
||||||
|
|
||||||
|
// Continuously send RPCs every second.
|
||||||
|
RunClient(absl::GetFlag(FLAGS_target)); |
||||||
|
|
||||||
|
return 0; |
||||||
|
} |
||||||
@ -0,0 +1,78 @@ |
|||||||
|
/*
|
||||||
|
* |
||||||
|
* Copyright 2021 gRPC authors. |
||||||
|
* |
||||||
|
* Licensed under the Apache License, Version 2.0 (the "License"); |
||||||
|
* you may not use this file except in compliance with the License. |
||||||
|
* You may obtain a copy of the License at |
||||||
|
* |
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
* |
||||||
|
* Unless required by applicable law or agreed to in writing, software |
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS, |
||||||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||||||
|
* See the License for the specific language governing permissions and |
||||||
|
* limitations under the License. |
||||||
|
* |
||||||
|
*/ |
||||||
|
|
||||||
|
// Explicitly define HAVE_ABSEIL to avoid conflict with OTel's Abseil
|
||||||
|
// version. Refer
|
||||||
|
// https://github.com/open-telemetry/opentelemetry-cpp/issues/1042.
|
||||||
|
#ifndef HAVE_ABSEIL |
||||||
|
#define HAVE_ABSEIL |
||||||
|
#endif |
||||||
|
|
||||||
|
#include <iostream> |
||||||
|
#include <memory> |
||||||
|
#include <string> |
||||||
|
|
||||||
|
#include "absl/flags/flag.h" |
||||||
|
#include "absl/flags/parse.h" |
||||||
|
#include "opentelemetry/exporters/ostream/metric_exporter.h" |
||||||
|
#include "opentelemetry/exporters/ostream/metric_exporter_factory.h" |
||||||
|
#include "opentelemetry/sdk/metrics/export/periodic_exporting_metric_reader.h" |
||||||
|
#include "opentelemetry/sdk/metrics/export/periodic_exporting_metric_reader_factory.h" |
||||||
|
#include "opentelemetry/sdk/metrics/meter_provider.h" |
||||||
|
|
||||||
|
#include <grpcpp/ext/otel_plugin.h> |
||||||
|
|
||||||
|
#ifdef BAZEL_BUILD |
||||||
|
#include "examples/cpp/otel/util.h" |
||||||
|
#else |
||||||
|
#include "../util.h" |
||||||
|
#endif |
||||||
|
|
||||||
|
ABSL_FLAG(uint16_t, port, 50051, "Server port for the service"); |
||||||
|
|
||||||
|
int main(int argc, char** argv) { |
||||||
|
absl::ParseCommandLine(argc, argv); |
||||||
|
// Register a global gRPC OpenTelemetry plugin configured with an ostream
|
||||||
|
// exporter.
|
||||||
|
auto ostream_exporter = |
||||||
|
opentelemetry::exporter::metrics::OStreamMetricExporterFactory::Create(); |
||||||
|
opentelemetry::sdk::metrics::PeriodicExportingMetricReaderOptions |
||||||
|
reader_options; |
||||||
|
reader_options.export_interval_millis = std::chrono::milliseconds(1000); |
||||||
|
reader_options.export_timeout_millis = std::chrono::milliseconds(500); |
||||||
|
auto reader = |
||||||
|
opentelemetry::sdk::metrics::PeriodicExportingMetricReaderFactory::Create( |
||||||
|
std::move(ostream_exporter), reader_options); |
||||||
|
auto meter_provider = |
||||||
|
std::make_shared<opentelemetry::sdk::metrics::MeterProvider>(); |
||||||
|
// The default histogram boundaries are not granular enough for RPCs. Override
|
||||||
|
// the "grpc.server.call.duration" view as recommended by
|
||||||
|
// https://github.com/grpc/proposal/blob/master/A66-otel-stats.md.
|
||||||
|
AddLatencyView(meter_provider.get(), "grpc.server.call.duration", "s"); |
||||||
|
meter_provider->AddMetricReader(std::move(reader)); |
||||||
|
auto status = grpc::OpenTelemetryPluginBuilder() |
||||||
|
.SetMeterProvider(std::move(meter_provider)) |
||||||
|
.BuildAndRegisterGlobal(); |
||||||
|
if (!status.ok()) { |
||||||
|
std::cerr << "Failed to register gRPC OpenTelemetry Plugin: " |
||||||
|
<< status.ToString() << std::endl; |
||||||
|
return static_cast<int>(status.code()); |
||||||
|
} |
||||||
|
RunServer(absl::GetFlag(FLAGS_port)); |
||||||
|
return 0; |
||||||
|
} |
||||||
Loading…
Reference in new issue