| From 6eb4a396945bbe89831ce1d205106c1348f376e3 Mon Sep 17 00:00:00 2001 |
| From: Mark Schaller <mschaller@google.com> |
| Date: Thu, 9 Jan 2020 19:50:57 -0500 |
| Subject: [PATCH] Adapt gRPC bazel files for use in Bazel |
| |
| This simplifies the cc_grpc_library macro and its deps: |
| * removes cc_grpc_library's grpc_only parameter (now always true) |
| * removes its proto_only, well_known_protos parameters (now always |
| false) |
| * removes its use_external parameter (it was previously unused) |
| * adds to it an extra_cc_library_kwargs parameter (forwarded to its |
| generated cc_library rule) |
| * removes "well_known_proto" functionality from generate_cc.bzl and |
| protobuf.bzl |
| * changes generate_cc's _protoc attribute to protoc |
| * sets cc_grpc_library's generate_cc call's plugin and protoc arguments |
| to Bazel's targets ("//third_party/grpc:cpp_plugin" and |
| "//third_party/protobuf:protoc", respectively) |
| * relativizes load statements throughout |
| * adds "srcs" filegroup to the package's BUILD file and includes it in |
| //third_party/grpc:srcs |
| |
| --- |
| third_party/grpc/bazel/BUILD | 5 + |
| third_party/grpc/bazel/cc_grpc_library.bzl | 127 +++++++-------------- |
| third_party/grpc/bazel/generate_cc.bzl | 39 +------ |
| third_party/grpc/bazel/protobuf.bzl | 16 --- |
| 4 files changed, 51 insertions(+), 136 deletions(-) |
| |
| diff --git a/third_party/grpc/bazel/BUILD b/third_party/grpc/bazel/BUILD |
| index c3c82c9c0c..6f451a6f24 100644 |
| --- a/third_party/grpc/bazel/BUILD |
| +++ b/third_party/grpc/bazel/BUILD |
| @@ -17,3 +17,8 @@ licenses(["notice"]) # Apache v2 |
| package(default_visibility = ["//:__subpackages__"]) |
| |
| load(":cc_grpc_library.bzl", "cc_grpc_library") |
| + |
| +filegroup( |
| + name = "srcs", |
| + srcs = glob(["**"]), |
| +) |
| diff --git a/third_party/grpc/bazel/cc_grpc_library.bzl b/third_party/grpc/bazel/cc_grpc_library.bzl |
| index dea493eaf2..0470a294fc 100644 |
| --- a/third_party/grpc/bazel/cc_grpc_library.bzl |
| +++ b/third_party/grpc/bazel/cc_grpc_library.bzl |
| @@ -1,105 +1,58 @@ |
| """Generates and compiles C++ grpc stubs from proto_library rules.""" |
| |
| -load("//bazel:generate_cc.bzl", "generate_cc") |
| -load("//bazel:protobuf.bzl", "well_known_proto_libs") |
| +load(":generate_cc.bzl", "generate_cc") |
| |
| +# Simplified version of gRPC upstream's cc_grpc_library. |
| def cc_grpc_library( |
| name, |
| srcs, |
| deps, |
| - proto_only = False, |
| - well_known_protos = False, |
| generate_mocks = False, |
| - use_external = False, |
| - grpc_only = False, |
| + extra_cc_library_kwargs = {}, |
| **kwargs): |
| - """Generates C++ grpc classes for services defined in a proto file. |
| + """Generates C++ grpc classes for services defined in proto_library rules. |
| |
| - If grpc_only is True, this rule is compatible with proto_library and |
| - cc_proto_library native rules such that it expects proto_library target |
| - as srcs argument and generates only grpc library classes, expecting |
| - protobuf messages classes library (cc_proto_library target) to be passed in |
| - deps argument. By default grpc_only is False which makes this rule to behave |
| - in a backwards-compatible mode (trying to generate both proto and grpc |
| - classes). |
| + This rule expects a singleton list containing a proto_library target for its |
| + srcs argument, and expects a list (of arbitrary size) of cc_proto_library |
| + targets for its deps argument. |
| + |
| + It generates only grpc library classes. |
| |
| Assumes the generated classes will be used in cc_api_version = 2. |
| |
| Args: |
| name (str): Name of rule. |
| - srcs (list): A single .proto file which contains services definitions, |
| - or if grpc_only parameter is True, a single proto_library which |
| - contains services descriptors. |
| - deps (list): A list of C++ proto_library (or cc_proto_library) which |
| - provides the compiled code of any message that the services depend on. |
| - proto_only (bool): If True, create only C++ proto classes library, |
| - avoid creating C++ grpc classes library (expect it in deps). |
| - Deprecated, use native cc_proto_library instead. False by default. |
| - well_known_protos (bool): Should this library additionally depend on |
| - well known protos. Deprecated, the well known protos should be |
| - specified as explicit dependencies of the proto_library target |
| - (passed in srcs parameter) instead. False by default. |
| + srcs (list): A single proto_library which contains services descriptors. |
| + deps (list): A list of cc_proto_library targets which |
| + provide the compiled code of any message that the services depend on. |
| generate_mocks (bool): when True, Google Mock code for client stub is |
| generated. False by default. |
| - use_external (bool): Not used. |
| - grpc_only (bool): if True, generate only grpc library, expecting |
| - protobuf messages library (cc_proto_library target) to be passed as |
| - deps. False by default (will become True by default eventually). |
| - **kwargs: rest of arguments, e.g., compatible_with and visibility |
| + extra_cc_library_kwargs (map): extra arguments to pass to the cc_library |
| + rule |
| + **kwargs: extra arguments to pass to all rules instantiated by this |
| + macro. Must be common to all build rules. See |
| + https://docs.bazel.build/versions/master/be/common-definitions.html#common-attributes |
| """ |
| - if len(srcs) > 1: |
| - fail("Only one srcs value supported", "srcs") |
| - if grpc_only and proto_only: |
| - fail("A mutualy exclusive configuration is specified: grpc_only = True and proto_only = True") |
| - |
| - extra_deps = [] |
| - proto_targets = [] |
| - |
| - if not grpc_only: |
| - proto_target = "_" + name + "_only" |
| - cc_proto_target = name if proto_only else "_" + name + "_cc_proto" |
| - |
| - proto_deps = ["_" + dep + "_only" for dep in deps if dep.find(":") == -1] |
| - proto_deps += [dep.split(":")[0] + ":" + "_" + dep.split(":")[1] + "_only" for dep in deps if dep.find(":") != -1] |
| - if well_known_protos: |
| - proto_deps += well_known_proto_libs() |
| - |
| - native.proto_library( |
| - name = proto_target, |
| - srcs = srcs, |
| - deps = proto_deps, |
| - **kwargs |
| - ) |
| - |
| - native.cc_proto_library( |
| - name = cc_proto_target, |
| - deps = [":" + proto_target], |
| - **kwargs |
| - ) |
| - extra_deps.append(":" + cc_proto_target) |
| - proto_targets.append(proto_target) |
| - else: |
| - if not srcs: |
| - fail("srcs cannot be empty", "srcs") |
| - proto_targets += srcs |
| - |
| - if not proto_only: |
| - codegen_grpc_target = "_" + name + "_grpc_codegen" |
| - generate_cc( |
| - name = codegen_grpc_target, |
| - srcs = proto_targets, |
| - plugin = "@com_github_grpc_grpc//src/compiler:grpc_cpp_plugin", |
| - well_known_protos = well_known_protos, |
| - generate_mocks = generate_mocks, |
| - **kwargs |
| - ) |
| - |
| - native.cc_library( |
| - name = name, |
| - srcs = [":" + codegen_grpc_target], |
| - hdrs = [":" + codegen_grpc_target], |
| - deps = deps + |
| - extra_deps + |
| - ["@com_github_grpc_grpc//:grpc++_codegen_proto"], |
| - **kwargs |
| - ) |
| + if len(srcs) != 1: |
| + fail("The srcs attribute must be a singleton list but was " + str(srcs), |
| + "srcs") |
| + |
| + codegen_grpc_target = "_" + name + "_grpc_codegen" |
| + generate_cc( |
| + name = codegen_grpc_target, |
| + srcs = srcs, |
| + plugin = "//third_party/grpc:cpp_plugin", |
| + generate_mocks = generate_mocks, |
| + protoc = "//third_party/protobuf:protoc", |
| + **kwargs |
| + ) |
| + |
| + cc_library_kwargs = dict(**extra_cc_library_kwargs) |
| + cc_library_kwargs.update(**kwargs) |
| + native.cc_library( |
| + name = name, |
| + srcs = [":" + codegen_grpc_target], |
| + hdrs = [":" + codegen_grpc_target], |
| + deps = deps + ["//third_party/grpc:grpc++_codegen_proto"], |
| + **cc_library_kwargs |
| + ) |
| diff --git a/third_party/grpc/bazel/generate_cc.bzl b/third_party/grpc/bazel/generate_cc.bzl |
| index 484959ebb7..38a5b460f9 100644 |
| --- a/third_party/grpc/bazel/generate_cc.bzl |
| +++ b/third_party/grpc/bazel/generate_cc.bzl |
| @@ -5,7 +5,7 @@ directly. |
| """ |
| |
| load( |
| - "//bazel:protobuf.bzl", |
| + ":protobuf.bzl", |
| "get_include_directory", |
| "get_plugin_args", |
| "get_proto_root", |
| @@ -117,34 +117,17 @@ def generate_cc_impl(ctx): |
| arguments += ["--proto_path={0}{1}".format(dir_out, proto_root)] |
| arguments += [_get_srcs_file_path(proto) for proto in protos] |
| |
| - # create a list of well known proto files if the argument is non-None |
| - well_known_proto_files = [] |
| - if ctx.attr.well_known_protos: |
| - f = ctx.attr.well_known_protos.files.to_list()[0].dirname |
| - if f != "external/com_google_protobuf/src/google/protobuf": |
| - print( |
| - "Error: Only @com_google_protobuf//:well_known_protos is supported", |
| - ) |
| - else: |
| - # f points to "external/com_google_protobuf/src/google/protobuf" |
| - # add -I argument to protoc so it knows where to look for the proto files. |
| - arguments += ["-I{0}".format(f + "/../..")] |
| - well_known_proto_files = [ |
| - f |
| - for f in ctx.attr.well_known_protos.files.to_list() |
| - ] |
| - |
| ctx.actions.run( |
| - inputs = protos + includes + well_known_proto_files, |
| + inputs = protos + includes, |
| tools = tools, |
| outputs = out_files, |
| - executable = ctx.executable._protoc, |
| + executable = ctx.executable.protoc, |
| arguments = arguments, |
| ) |
| |
| return struct(files = depset(out_files)) |
| |
| -_generate_cc = rule( |
| +generate_cc = rule( |
| attrs = { |
| "srcs": attr.label_list( |
| mandatory = True, |
| @@ -160,13 +143,12 @@ _generate_cc = rule( |
| mandatory = False, |
| allow_empty = True, |
| ), |
| - "well_known_protos": attr.label(mandatory = False), |
| "generate_mocks": attr.bool( |
| default = False, |
| mandatory = False, |
| ), |
| - "_protoc": attr.label( |
| - default = Label("//external:protocol_compiler"), |
| + "protoc": attr.label( |
| + mandatory = True, |
| executable = True, |
| cfg = "host", |
| ), |
| @@ -175,12 +157,3 @@ _generate_cc = rule( |
| output_to_genfiles = True, |
| implementation = generate_cc_impl, |
| ) |
| - |
| -def generate_cc(well_known_protos, **kwargs): |
| - if well_known_protos: |
| - _generate_cc( |
| - well_known_protos = "@com_google_protobuf//:well_known_protos", |
| - **kwargs |
| - ) |
| - else: |
| - _generate_cc(**kwargs) |
| diff --git a/third_party/grpc/bazel/protobuf.bzl b/third_party/grpc/bazel/protobuf.bzl |
| index 7af27a8b30..0d6a4135f0 100644 |
| --- a/third_party/grpc/bazel/protobuf.bzl |
| +++ b/third_party/grpc/bazel/protobuf.bzl |
| @@ -3,22 +3,6 @@ |
| _PROTO_EXTENSION = ".proto" |
| _VIRTUAL_IMPORTS = "/_virtual_imports/" |
| |
| -def well_known_proto_libs(): |
| - return [ |
| - "@com_google_protobuf//:any_proto", |
| - "@com_google_protobuf//:api_proto", |
| - "@com_google_protobuf//:compiler_plugin_proto", |
| - "@com_google_protobuf//:descriptor_proto", |
| - "@com_google_protobuf//:duration_proto", |
| - "@com_google_protobuf//:empty_proto", |
| - "@com_google_protobuf//:field_mask_proto", |
| - "@com_google_protobuf//:source_context_proto", |
| - "@com_google_protobuf//:struct_proto", |
| - "@com_google_protobuf//:timestamp_proto", |
| - "@com_google_protobuf//:type_proto", |
| - "@com_google_protobuf//:wrappers_proto", |
| - ] |
| - |
| def get_proto_root(workspace_root): |
| """Gets the root protobuf directory. |
| |
| -- |
| 2.25.0.rc1.283.g88dfdc4193-goog |
| |
