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#!/bin/bash -e
# Copyright 2020 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Obtain the most recent proto descriptors from chromiumos/infra/proto protos.
# This is needed to work with these protos from *.star code.
set -eu
CROS_CONFIG_REPO="https://chromium.googlesource.com/chromiumos/config"
CIPD_PROTOC_VERSION='v3.6.1'
CIPD_PROTOC_GEN_GO_VERSION='v1.3.2'
readonly script_dir="$(dirname "$(realpath -e "${BASH_SOURCE[0]}")")"
readonly target="${script_dir}/proto/descpb.bin"
readonly work_dir=$(mktemp --tmpdir -d genprotodescXXXXXX)
trap "rm -rf ${work_dir}" EXIT
echo "Using temporary directory ${work_dir}"
if [[ -n ${CHROMIUMOS_CONFIG_DIR+x} ]]; then
echo "CHROMIUMOS_CONFIG_DIR is set: " \
"Copying sources from ${CHROMIUMOS_CONFIG_DIR}/"
cp -r "${CHROMIUMOS_CONFIG_DIR}/" "${work_dir}/config"
else
echo "Creating a shallow clone of ${CROS_CONFIG_REPO}"
git clone -q --depth=1 --shallow-submodules "${CROS_CONFIG_REPO}" \
"${work_dir}/config"
fi
readonly cros_config_subdir="config/proto"
echo "Grabbing protoc from CIPD"
cipd_root=.cipd_bin
cipd ensure \
-log-level warning \
-root "${cipd_root}" \
-ensure-file - \
<<ENSURE_FILE
infra/tools/protoc/\${platform} protobuf_version:${CIPD_PROTOC_VERSION}
chromiumos/infra/tools/protoc-gen-go version:${CIPD_PROTOC_GEN_GO_VERSION}
ENSURE_FILE
# Need full path here for cipd as there is a cd to a different directory.
export PATH="${script_dir}/${cipd_root}:${PATH}"
echo "Generating protobuf descriptors"
readonly all_protos=$(
cd "${work_dir}" &&
find "${cros_config_subdir}" -name "*.proto" | sort
)
(
cd "${work_dir}" &&
export LC_ALL=C # for stable sorting order
protoc -I"${cros_config_subdir}" \
--descriptor_set_out=descpb.bin ${all_protos}
)
echo "Copying generated descriptors"
cp "${work_dir}/descpb.bin" "${target}"