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#!/bin/bash
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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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# Generate linux RBE configs using rbe_configs_gen.
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# See https://github.com/bazelbuild/bazel-toolchains#rbe_configs_gen---cli-tool-to-generate-configs
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set -ex
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cd $(dirname $0)/../..
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REPO_ROOT="$(pwd)"
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TEMP_DIR="$(mktemp -d)"
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pushd "${TEMP_DIR}"
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# Build the "rbe_configs_gen" binary using the official instructions.
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git clone https://github.com/bazelbuild/bazel-toolchains.git
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cd bazel-toolchains
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# Build "rbe_configs_gen" binary under docker and put it to the current directory.
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docker run --rm -v $PWD:/srcdir -w /srcdir golang:1.16 go build -o rbe_configs_gen ./cmd/rbe_configs_gen/rbe_configs_gen.go
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popd
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# location of the "rbe_config_gen" binary as build by the previous step.
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RBE_CONFIGS_GEN_TOOL_PATH="${TEMP_DIR}/bazel-toolchains/rbe_configs_gen"
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# Actions on RBE will run under a dedicated docker image from our collection of testing docker images.
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LINUX_RBE_DOCKERFILE_DIR=tools/dockerfile/test/rbe_ubuntu2004
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# Use the "current version" of the above dockerfile.
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LINUX_RBE_DOCKER_IMAGE=$(cat ${LINUX_RBE_DOCKERFILE_DIR}.current_version)
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# Bazel version used for configuring
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# Needs to be the oldest of the versions from bazel/supported_versions.txt chosen
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# so that the result is compatible with other supported bazel versions.
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BAZEL_VERSION=6.5.0
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# TODO(jtattermusch): experiment with --cpp_env_json to simplify bazel build configuration.
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# Where to store the generated configs (relative to repo root)
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CONFIG_OUTPUT_PATH=third_party/toolchains/rbe_ubuntu2004
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# Delete old generated configs.
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rm -rf "${REPO_ROOT}/${CONFIG_OUTPUT_PATH}"
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${RBE_CONFIGS_GEN_TOOL_PATH} \
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--bazel_version="${BAZEL_VERSION}" \
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--toolchain_container="${LINUX_RBE_DOCKER_IMAGE}" \
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--output_src_root="${REPO_ROOT}" \
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--output_config_path="${CONFIG_OUTPUT_PATH}" \
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--exec_os=linux \
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--target_os=linux \
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--generate_java_configs=false
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