75 lines
2.9 KiB
CMake
75 lines
2.9 KiB
CMake
# Native Shard protocol: C++ schema generation, build wiring and conformance test.
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#
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# The C++ stubs are generated into the build tree at configure time — they are
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# never committed. A C++ consumer already needs a toolchain, so committing
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# generated C++ would only create a second copy of the schema that can rot.
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#
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# gRPC C++ is optional here on purpose. The conformance test only needs message
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# types, so the schema can be verified on a machine that has protobuf but not
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# the gRPC C++ stack. When gRPC *is* found, the service stubs are generated too
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# and exported as `shard_runtime_grpc` for the worker (DGR-008) to link.
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#
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# Build:
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# cmake -S packages/node/native -B build/native -DCMAKE_PREFIX_PATH=<protobuf-install>
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# cmake --build build/native -j
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# ctest --test-dir build/native --output-on-failure
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#
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# `scripts/bootstrap_native_toolchain.sh` builds a protobuf install from source
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# when the system has none.
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cmake_minimum_required(VERSION 3.24)
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project(meshnet_shard_protocol CXX)
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set(CMAKE_CXX_STANDARD 17)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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find_package(protobuf CONFIG REQUIRED)
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find_package(gRPC CONFIG QUIET)
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set(SHARD_PROTO "${CMAKE_CURRENT_SOURCE_DIR}/proto/shard_runtime.proto")
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# Message types: always available.
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add_library(shard_runtime_proto STATIC "${SHARD_PROTO}")
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target_link_libraries(shard_runtime_proto PUBLIC protobuf::libprotobuf)
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target_include_directories(shard_runtime_proto PUBLIC "${CMAKE_CURRENT_BINARY_DIR}")
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protobuf_generate(
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TARGET shard_runtime_proto
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LANGUAGE cpp
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IMPORT_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/proto"
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PROTOC_OUT_DIR "${CMAKE_CURRENT_BINARY_DIR}"
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)
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# Service stubs: only when the gRPC C++ stack is present.
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if(gRPC_FOUND)
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add_library(shard_runtime_grpc STATIC "${SHARD_PROTO}")
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target_link_libraries(shard_runtime_grpc PUBLIC shard_runtime_proto gRPC::grpc++)
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target_include_directories(shard_runtime_grpc PUBLIC "${CMAKE_CURRENT_BINARY_DIR}")
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protobuf_generate(
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TARGET shard_runtime_grpc
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LANGUAGE grpc
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GENERATE_EXTENSIONS .grpc.pb.h .grpc.pb.cc
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PLUGIN "protoc-gen-grpc=$<TARGET_FILE:gRPC::grpc_cpp_plugin>"
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IMPORT_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/proto"
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PROTOC_OUT_DIR "${CMAKE_CURRENT_BINARY_DIR}"
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)
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message(STATUS "gRPC C++ found: building ShardRuntime service stubs")
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else()
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message(STATUS "gRPC C++ not found: building message types only "
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"(sufficient for the conformance test)")
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endif()
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enable_testing()
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add_executable(shard_protocol_conformance tests/test_shard_protocol_conformance.cpp)
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target_link_libraries(shard_protocol_conformance PRIVATE shard_runtime_proto)
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# The test asserts against the same committed vectors the Python test uses, and
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# writes its own re-serialization back out so Python can prove the two languages
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# agree byte-for-byte.
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add_test(
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NAME shard_protocol_conformance
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COMMAND shard_protocol_conformance
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"${CMAKE_CURRENT_SOURCE_DIR}/testdata"
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"${CMAKE_CURRENT_BINARY_DIR}"
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)
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