mirror of https://github.com/grpc/grpc-web.git
[bazel] Introduce grpc_web_toolchain
This change adds a new rule `grpc_web_toolchain` which we will use to provide the generator/runtime to `closure_grpc_web_library`. Updates #507 RELNOTES: [bazel] `closure_grpc_web_library` now uses toolchains to resolve the generator and runtime. To migrate, add the following snipped to your `WORKSPACE`: ```starlark load("@com_github_grpc_grpc_web//bazel:repositories.bzl", "grpc_web_toolchains") grpc_web_toolchains() ```
This commit is contained in:
Yannic Bonenberger
Stanley Cheung
parent
9d90faacca
commit
e994bb108b
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@ -34,3 +34,7 @@ load("@io_bazel_rules_closure//closure:repositories.bzl", "rules_closure_depende
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rules_closure_dependencies()
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rules_closure_toolchains()
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load("//bazel:repositories.bzl", "grpc_web_toolchains")
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grpc_web_toolchains()
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@ -0,0 +1,33 @@
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## Copyright 2020 Google LLC
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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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## https://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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load("//bazel:defs.bzl", "grpc_web_toolchain")
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# The toolchain type used to distinguish proto toolchains.
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toolchain_type(
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name = "toolchain_type",
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visibility = ["//visibility:public"],
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)
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grpc_web_toolchain(
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name = "closure_toolchain_impl",
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generator = "//javascript/net/grpc/web:protoc-gen-grpc-web",
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runtime_library = "//javascript/net/grpc/web:closure_grpcweb_runtime",
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)
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toolchain(
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name = "closure_toolchain",
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toolchain = ":closure_toolchain_impl",
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toolchain_type = ":toolchain_type",
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)
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@ -1,199 +1,20 @@
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# This rule was inspired by rules_closure`s implementation of
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# |closure_proto_library|, licensed under Apache 2.
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# https://github.com/bazelbuild/rules_closure/blob/3555e5ba61fdcc17157dd833eaf7d19b313b1bca/closure/protobuf/closure_proto_library.bzl
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## Copyright 2020 Google LLC
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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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## https://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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"""Starlark rules for using gRPC-Web with Bazel and `rules_closure`."""
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"""Compatibility-export for `closure_grpc_web_library`."""
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load("@io_bazel_rules_closure//closure/compiler:closure_js_library.bzl", "create_closure_js_library")
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load("@io_bazel_rules_closure//closure/private:defs.bzl", "CLOSURE_JS_TOOLCHAIN_ATTRS", "unfurl") # buildifier: disable=bzl-visibility
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load("@io_bazel_rules_closure//closure/protobuf:closure_proto_library.bzl", "closure_proto_aspect")
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load("@rules_proto//proto:defs.bzl", "ProtoInfo")
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load("//bazel/private/rules:closure_grpc_web_library.bzl", _closure_grpc_web_library = "closure_grpc_web_library")
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# This was borrowed from Rules Go, licensed under Apache 2.
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# https://github.com/bazelbuild/rules_go/blob/67f44035d84a352cffb9465159e199066ecb814c/proto/compiler.bzl#L72
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def _proto_path(proto):
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path = proto.path
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root = proto.root.path
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ws = proto.owner.workspace_root
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if path.startswith(root):
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path = path[len(root):]
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if path.startswith("/"):
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path = path[1:]
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if path.startswith(ws):
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path = path[len(ws):]
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if path.startswith("/"):
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path = path[1:]
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return path
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def _proto_include_path(proto):
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path = proto.path[:-len(_proto_path(proto))]
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if not path:
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return "."
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if path.endswith("/"):
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path = path[:-1]
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return path
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def _proto_include_paths(protos):
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return [_proto_include_path(proto) for proto in protos]
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def _generate_closure_grpc_web_src_progress_message(proto):
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# TODO(yannic): Add a better message?
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return "Generating GRPC Web for %s" % proto
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def _assert(condition, message):
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if not condition:
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fail(message)
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def _generate_closure_grpc_web_srcs(
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label,
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actions,
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protoc,
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protoc_gen_grpc_web,
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import_style,
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mode,
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sources,
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transitive_sources):
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args = actions.args()
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args.add("--plugin", "protoc-gen-grpc-web=" + protoc_gen_grpc_web.path)
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args.add_all(_proto_include_paths(transitive_sources.to_list()), format_each = "-I%s")
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args.add("--grpc-web_opt", "mode=" + mode)
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if "es6" == import_style:
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args.add("--grpc-web_opt", "import_style=experimental_closure_es6")
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else:
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args.add("--grpc-web_opt", "import_style=" + import_style)
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root = None
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files = []
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es6_files = []
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for src in sources:
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basename = src.basename[:-(len(src.extension) + 1)]
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js = actions.declare_file(basename + "_grpc_web_pb.js", sibling = src)
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files.append(js)
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_assert(
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((root == None) or (root == js.root.path)),
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"proto sources do not have the same root: '{}' != '{}'".format(root, js.root.path),
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)
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root = js.root.path
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if "es6" == import_style:
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es6 = actions.declare_file(basename + ".pb.grpc-web.js", sibling = src)
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es6_files.append(es6)
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_assert(root == es6.root.path, "ES6 file should have same root: '{}' != '{}'".format(root, es6.root.path))
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_assert(root, "At least one source file is required")
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args.add("--grpc-web_out", root)
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args.add_all(sources)
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actions.run(
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tools = [protoc_gen_grpc_web],
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inputs = transitive_sources,
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outputs = files + es6_files,
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executable = protoc,
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arguments = [args],
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progress_message =
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_generate_closure_grpc_web_src_progress_message(str(label)),
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)
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return files, es6_files
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_error_multiple_deps = "".join([
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"'deps' attribute must contain exactly one label ",
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"(we didn't name it 'dep' for consistency). ",
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"We may revisit this restriction later.",
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])
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def _closure_grpc_web_library_impl(ctx):
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if len(ctx.attr.deps) > 1:
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# TODO(yannic): Revisit this restriction.
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fail(_error_multiple_deps, "deps")
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proto_info = ctx.attr.deps[0][ProtoInfo]
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srcs, es6_srcs = _generate_closure_grpc_web_srcs(
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label = ctx.label,
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actions = ctx.actions,
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protoc = ctx.executable._protoc,
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protoc_gen_grpc_web = ctx.executable._protoc_gen_grpc_web,
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import_style = ctx.attr.import_style,
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mode = ctx.attr.mode,
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sources = proto_info.direct_sources,
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transitive_sources = proto_info.transitive_imports,
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)
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deps = unfurl(ctx.attr.deps, provider = "closure_js_library")
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deps.append(ctx.attr._runtime)
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library = create_closure_js_library(
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ctx = ctx,
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srcs = srcs + es6_srcs,
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deps = deps,
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suppress = [
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"misplacedTypeAnnotation",
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"unusedPrivateMembers",
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"reportUnknownTypes",
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"strictDependencies",
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"extraRequire",
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],
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lenient = False,
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)
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# `rules_closure` still uses the legacy provider syntax.
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# buildifier: disable=rule-impl-return
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return struct(
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exports = library.exports,
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closure_js_library = library.closure_js_library,
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# The usual suspects are exported as runfiles, in addition to raw source.
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runfiles = ctx.runfiles(files = srcs),
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)
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closure_grpc_web_library = rule(
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implementation = _closure_grpc_web_library_impl,
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attrs = dict({
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"deps": attr.label_list(
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mandatory = True,
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providers = [ProtoInfo, "closure_js_library"],
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# The files generated by this aspect are required dependencies.
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aspects = [closure_proto_aspect],
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),
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"import_style": attr.string(
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default = "closure",
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values = [
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"closure",
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# This is experimental and requires closure-js.
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# We reserve the right to do breaking changes at any time.
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"es6",
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],
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),
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"mode": attr.string(
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default = "grpcwebtext",
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values = ["grpcwebtext", "grpcweb"],
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),
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# Internal only.
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# TODO(yannic): Switch to using `proto_toolchain` after
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# https://github.com/bazelbuild/rules_proto/pull/25 lands.
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"_protoc": attr.label(
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default = Label("@com_google_protobuf//:protoc"),
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executable = True,
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cfg = "host",
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),
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# TODO(yannic): Create `grpc_web_toolchain`.
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"_protoc_gen_grpc_web": attr.label(
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default = Label("//javascript/net/grpc/web:protoc-gen-grpc-web"),
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executable = True,
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cfg = "host",
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),
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"_runtime": attr.label(
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default = Label("//javascript/net/grpc/web:closure_grpcweb_runtime"),
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),
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}, **CLOSURE_JS_TOOLCHAIN_ATTRS),
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)
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# TODO(yannic): Deprecate and remove.
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closure_grpc_web_library = _closure_grpc_web_library
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@ -0,0 +1,21 @@
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## Copyright 2020 Google LLC
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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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## https://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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"""Starlark rules for using gRPC-Web."""
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load("//bazel/private/rules:closure_grpc_web_library.bzl", _closure_grpc_web_library = "closure_grpc_web_library")
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load("//bazel/private/rules:grpc_web_toolchain.bzl", _grpc_web_toolchain = "grpc_web_toolchain")
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closure_grpc_web_library = _closure_grpc_web_library
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grpc_web_toolchain = _grpc_web_toolchain
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@ -0,0 +1 @@
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# Intentionally left empty (for now).
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@ -0,0 +1,197 @@
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# This rule was inspired by rules_closure`s implementation of
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# |closure_proto_library|, licensed under Apache 2.
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# https://github.com/bazelbuild/rules_closure/blob/3555e5ba61fdcc17157dd833eaf7d19b313b1bca/closure/protobuf/closure_proto_library.bzl
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"""Starlark rules for using gRPC-Web with Bazel and `rules_closure`."""
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load("@io_bazel_rules_closure//closure/compiler:closure_js_library.bzl", "create_closure_js_library")
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load("@io_bazel_rules_closure//closure/private:defs.bzl", "CLOSURE_JS_TOOLCHAIN_ATTRS", "unfurl") # buildifier: disable=bzl-visibility
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load("@io_bazel_rules_closure//closure/protobuf:closure_proto_library.bzl", "closure_proto_aspect")
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load("@rules_proto//proto:defs.bzl", "ProtoInfo")
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# This was borrowed from Rules Go, licensed under Apache 2.
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# https://github.com/bazelbuild/rules_go/blob/67f44035d84a352cffb9465159e199066ecb814c/proto/compiler.bzl#L72
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def _proto_path(proto):
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path = proto.path
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root = proto.root.path
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ws = proto.owner.workspace_root
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if path.startswith(root):
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path = path[len(root):]
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if path.startswith("/"):
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path = path[1:]
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if path.startswith(ws):
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path = path[len(ws):]
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if path.startswith("/"):
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path = path[1:]
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return path
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def _proto_include_path(proto):
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path = proto.path[:-len(_proto_path(proto))]
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if not path:
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return "."
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if path.endswith("/"):
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path = path[:-1]
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return path
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def _proto_include_paths(protos):
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return [_proto_include_path(proto) for proto in protos]
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def _generate_closure_grpc_web_src_progress_message(proto):
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# TODO(yannic): Add a better message?
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return "Generating GRPC Web for %s" % proto
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def _assert(condition, message):
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if not condition:
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fail(message)
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def _generate_closure_grpc_web_srcs(
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label,
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actions,
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protoc,
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protoc_gen_grpc_web,
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import_style,
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mode,
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sources,
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transitive_sources):
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args = actions.args()
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args.add("--plugin", "protoc-gen-grpc-web=" + protoc_gen_grpc_web.executable.path)
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args.add_all(_proto_include_paths(transitive_sources.to_list()), format_each = "-I%s")
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args.add("--grpc-web_opt", "mode=" + mode)
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if "es6" == import_style:
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args.add("--grpc-web_opt", "import_style=experimental_closure_es6")
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else:
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args.add("--grpc-web_opt", "import_style=" + import_style)
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root = None
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files = []
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es6_files = []
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for src in sources:
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basename = src.basename[:-(len(src.extension) + 1)]
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js = actions.declare_file(basename + "_grpc_web_pb.js", sibling = src)
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files.append(js)
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_assert(
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((root == None) or (root == js.root.path)),
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"proto sources do not have the same root: '{}' != '{}'".format(root, js.root.path),
|
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)
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root = js.root.path
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if "es6" == import_style:
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es6 = actions.declare_file(basename + ".pb.grpc-web.js", sibling = src)
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es6_files.append(es6)
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_assert(root == es6.root.path, "ES6 file should have same root: '{}' != '{}'".format(root, es6.root.path))
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_assert(root, "At least one source file is required")
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args.add("--grpc-web_out", root)
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args.add_all(sources)
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actions.run(
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tools = [protoc_gen_grpc_web],
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inputs = transitive_sources,
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outputs = files + es6_files,
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executable = protoc,
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arguments = [args],
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progress_message =
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_generate_closure_grpc_web_src_progress_message(str(label)),
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)
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return files, es6_files
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_error_multiple_deps = "".join([
|
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"'deps' attribute must contain exactly one label ",
|
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"(we didn't name it 'dep' for consistency). ",
|
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"We may revisit this restriction later.",
|
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])
|
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|
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def _closure_grpc_web_library_impl(ctx):
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if len(ctx.attr.deps) > 1:
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# TODO(yannic): Revisit this restriction.
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fail(_error_multiple_deps, "deps")
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grpc_web_toolchain = ctx.toolchains["@com_github_grpc_grpc_web//bazel:toolchain_type"]
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proto_info = ctx.attr.deps[0][ProtoInfo]
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srcs, es6_srcs = _generate_closure_grpc_web_srcs(
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label = ctx.label,
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actions = ctx.actions,
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protoc = ctx.executable._protoc,
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protoc_gen_grpc_web = grpc_web_toolchain.generator,
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import_style = ctx.attr.import_style,
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mode = ctx.attr.mode,
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sources = proto_info.direct_sources,
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transitive_sources = proto_info.transitive_imports,
|
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)
|
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deps = unfurl(ctx.attr.deps, provider = "closure_js_library")
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deps.append(grpc_web_toolchain.runtime_library)
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library = create_closure_js_library(
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ctx = ctx,
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srcs = srcs + es6_srcs,
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deps = deps,
|
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suppress = [
|
||||
"misplacedTypeAnnotation",
|
||||
"unusedPrivateMembers",
|
||||
"reportUnknownTypes",
|
||||
"strictDependencies",
|
||||
"extraRequire",
|
||||
],
|
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lenient = False,
|
||||
)
|
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|
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# `rules_closure` still uses the legacy provider syntax.
|
||||
# buildifier: disable=rule-impl-return
|
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return struct(
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exports = library.exports,
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closure_js_library = library.closure_js_library,
|
||||
# The usual suspects are exported as runfiles, in addition to raw source.
|
||||
runfiles = ctx.runfiles(files = srcs),
|
||||
)
|
||||
|
||||
closure_grpc_web_library = rule(
|
||||
implementation = _closure_grpc_web_library_impl,
|
||||
attrs = dict({
|
||||
"deps": attr.label_list(
|
||||
mandatory = True,
|
||||
providers = [ProtoInfo, "closure_js_library"],
|
||||
# The files generated by this aspect are required dependencies.
|
||||
aspects = [closure_proto_aspect],
|
||||
),
|
||||
"import_style": attr.string(
|
||||
default = "closure",
|
||||
values = [
|
||||
"closure",
|
||||
|
||||
# This is experimental and requires closure-js.
|
||||
# We reserve the right to do breaking changes at any time.
|
||||
"es6",
|
||||
],
|
||||
),
|
||||
"mode": attr.string(
|
||||
default = "grpcwebtext",
|
||||
values = ["grpcwebtext", "grpcweb"],
|
||||
),
|
||||
|
||||
# Internal only.
|
||||
|
||||
# TODO(yannic): Switch to using `proto_toolchain` after
|
||||
# https://github.com/bazelbuild/rules_proto/pull/25 lands.
|
||||
"_protoc": attr.label(
|
||||
default = Label("@com_google_protobuf//:protoc"),
|
||||
executable = True,
|
||||
cfg = "host",
|
||||
),
|
||||
}, **CLOSURE_JS_TOOLCHAIN_ATTRS),
|
||||
toolchains = [
|
||||
"@com_github_grpc_grpc_web//bazel:toolchain_type",
|
||||
],
|
||||
# TODO(yannic): Remove after `--incompatible_override_toolchain_transition` is flipped.
|
||||
# https://github.com/bazelbuild/bazel/issues/11584
|
||||
incompatible_use_toolchain_transition = True,
|
||||
)
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
## Copyright 2020 Google LLC
|
||||
##
|
||||
## 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
|
||||
##
|
||||
## https://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.
|
||||
|
||||
"""Contains the definition of `grpc_web_toolchain`."""
|
||||
|
||||
def _grpc_web_toolchain_impl(ctx):
|
||||
return [
|
||||
platform_common.ToolchainInfo(
|
||||
generator = ctx.attr.generator.files_to_run,
|
||||
runtime_library = ctx.attr.runtime_library,
|
||||
),
|
||||
]
|
||||
|
||||
grpc_web_toolchain = rule(
|
||||
implementation = _grpc_web_toolchain_impl,
|
||||
attrs = {
|
||||
"generator": attr.label(
|
||||
mandatory = True,
|
||||
executable = True,
|
||||
cfg = "exec",
|
||||
),
|
||||
"runtime_library": attr.label(
|
||||
mandatory = False,
|
||||
cfg = "target",
|
||||
providers = ["closure_js_library"],
|
||||
),
|
||||
},
|
||||
provides = [
|
||||
platform_common.ToolchainInfo,
|
||||
],
|
||||
)
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
## Copyright 2020 Google LLC
|
||||
##
|
||||
## 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
|
||||
##
|
||||
## https://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.
|
||||
|
||||
"""To be documented."""
|
||||
|
||||
def grpc_web_dependencies():
|
||||
"""An utility method to load all dependencies of `gRPC-Web`."""
|
||||
|
||||
fail("Loading dependencies through grpc_web_dependencies() is not supported yet.")
|
||||
|
||||
def grpc_web_toolchains():
|
||||
"""An utility method to load all gRPC-Web toolchains."""
|
||||
|
||||
native.register_toolchains(
|
||||
"//bazel:closure_toolchain",
|
||||
)
|
||||
|
|
@ -1,6 +1,6 @@
|
|||
load("@io_bazel_rules_closure//closure:defs.bzl", "closure_js_binary")
|
||||
load("@rules_proto//proto:defs.bzl", "proto_library")
|
||||
load("//bazel:closure_grpc_web_library.bzl", "closure_grpc_web_library")
|
||||
load("//bazel:defs.bzl", "closure_grpc_web_library")
|
||||
|
||||
proto_library(
|
||||
name = "echo_proto",
|
||||
|
|
|
|||
Loading…
Reference in New Issue