mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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81 lines
2.7 KiB
81 lines
2.7 KiB
"""Generates and compiles C++ grpc stubs from proto_library rules.""" |
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load("//:bazel/generate_cc.bzl", "generate_cc") |
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def cc_grpc_library(name, srcs, deps, proto_only, well_known_protos, use_external = False, **kwargs): |
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"""Generates C++ grpc classes from a .proto file. |
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Assumes the generated classes will be used in cc_api_version = 2. |
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Arguments: |
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name: name of rule. |
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srcs: a single proto_library, which wraps the .proto files with services. |
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deps: a list of C++ proto_library (or cc_proto_library) which provides |
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the compiled code of any message that the services depend on. |
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well_known_protos: The target from protobuf library that exports well |
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known protos. Currently it will only work if the value is |
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"@com_google_protobuf//:well_known_protos" |
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use_external: When True the grpc deps are prefixed with //external. This |
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allows grpc to be used as a dependency in other bazel projects. |
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**kwargs: rest of arguments, e.g., compatible_with and visibility. |
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""" |
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if len(srcs) > 1: |
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fail("Only one srcs value supported", "srcs") |
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proto_target = "_" + name + "_only" |
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codegen_target = "_" + name + "_codegen" |
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codegen_grpc_target = "_" + name + "_grpc_codegen" |
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proto_deps = ["_" + dep + "_only" for dep in deps if dep.find(':') == -1] |
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proto_deps += [dep.split(':')[0] + ':' + "_" + dep.split(':')[1] + "_only" for dep in deps if dep.find(':') != -1] |
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native.proto_library( |
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name = proto_target, |
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srcs = srcs, |
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deps = proto_deps, |
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**kwargs |
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) |
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generate_cc( |
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name = codegen_target, |
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srcs = [proto_target], |
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well_known_protos = well_known_protos, |
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**kwargs |
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) |
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if not proto_only: |
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if use_external: |
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# when this file is used by non-grpc projects |
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plugin = "//external:grpc_cpp_plugin" |
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else: |
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plugin = "//:grpc_cpp_plugin" |
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generate_cc( |
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name = codegen_grpc_target, |
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srcs = [proto_target], |
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plugin = plugin, |
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well_known_protos = well_known_protos, |
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**kwargs |
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) |
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if use_external: |
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# when this file is used by non-grpc projects |
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grpc_deps = ["//external:grpc++", "//external:grpc++_codegen_proto", |
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"//external:protobuf"] |
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else: |
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grpc_deps = ["//:grpc++", "//:grpc++_codegen_proto", "//external:protobuf"] |
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native.cc_library( |
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name = name, |
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srcs = [":" + codegen_grpc_target, ":" + codegen_target], |
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hdrs = [":" + codegen_grpc_target, ":" + codegen_target], |
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deps = deps + grpc_deps, |
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**kwargs |
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) |
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else: |
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native.cc_library( |
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name = name, |
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srcs = [":" + codegen_target], |
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hdrs = [":" + codegen_target], |
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deps = deps + ["//external:protobuf"], |
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**kwargs |
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)
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