mirror of
https://github.com/digital-asset/daml.git
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111 lines
3.6 KiB
Bash
Executable File
111 lines
3.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright (c) 2024 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
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# SPDX-License-Identifier: Apache-2.0
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set -euo pipefail
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eval "$(dev-env/bin/dade assist)"
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# The `SYSTEM_PULLREQUEST_TARGETBRANCH` environment variable is defined by
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# Azure Pipelines; in order to run this script locally, define it beforehand
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# as the branch being targeted. For example:
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#
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# SYSTEM_PULLREQUEST_TARGETBRANCH=main bash -x ci/check-protobuf-stability.sh
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#
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TARGET="${SYSTEM_PULLREQUEST_TARGETBRANCH:-main}"
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echo "The target branch is '${TARGET}'."
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readonly BREAKING_PROTOBUF_CHANGE_TRAILER_KEY="Breaks-protobuf"
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# Other protobufs are checked against the chosen git target
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function check_non_lf_protos() {
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declare -a BUF_MODULES_AGAINST_STABLE=(
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"buf-ledger-api.yaml"
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)
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echo "Checking protobufs against git target '${BUF_GIT_TARGET_TO_CHECK}'"
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for buf_module in "${BUF_MODULES_AGAINST_STABLE[@]}"; do
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buf breaking --config "${buf_module}" --against "$BUF_GIT_TARGET_TO_CHECK" --against-config "${buf_module}"
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done
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}
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is_check_skipped() {
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for sha in $(git rev-list origin/"$TARGET"..); do
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breaks_proto_trailer_value=$(git show -s --format="%(trailers:key=${BREAKING_PROTOBUF_CHANGE_TRAILER_KEY},valueonly)" "$sha" | xargs)
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if [[ $breaks_proto_trailer_value == "true" ]]; then
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return 0
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fi
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done
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return 1
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}
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check_protos() {
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check_non_lf_protos
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}
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case "${1:---stable}" in
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-h | --help)
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cat <<USAGE
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Usage: ./check-protobuf-stability.sh [options]
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Options:
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-h, --help: shows this help
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--stable: check against the latest stable tag (default)
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--target: check against the tip of the target branch
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When checking against a target branch, the check can be skipped by adding the following trailer:
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$BREAKING_PROTOBUF_CHANGE_TRAILER_KEY: true
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Example commit message:
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This commit breaks protobufs when checking against the target branch.
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$BREAKING_PROTOBUF_CHANGE_TRAILER_KEY: true
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USAGE
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exit
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;;
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--stable)
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# Check against the highest stable tag (according to semver) for the target branch.
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#
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# This check does not need to run on release branch commits because
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# they are built sequentially, so no conflicts are possible and the per-PR
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# check is enough.
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readonly RELEASE_BRANCH_REGEX="^release/.*"
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LATEST_STABLE_TAG=""
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if [[ "${TARGET}" =~ ${RELEASE_BRANCH_REGEX} ]]; then
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readonly BRANCH_SUFFIX="${TARGET#release/}"
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readonly MINOR_VERSION="${BRANCH_SUFFIX%.x}"
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readonly NEXT_MINOR_VERSION=$(semver bump minor "$MINOR_VERSION.0")
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readonly STABLE_TAGS=($(git tag | grep -P '^v\d+\.\d+\.\d+$' | sort -V))
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LATEST_STABLE_TAG="$(
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for TAG in "${STABLE_TAGS[@]}"; do
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if [[ $(semver compare "${TAG#v}" "$NEXT_MINOR_VERSION") == "-1" ]]; then
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echo "$TAG";
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fi;
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done | tail -1)"
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elif [[ "${TARGET}" == "main" ]]; then
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LATEST_STABLE_TAG="$(git tag | grep "v.*" | grep -v "snapshot" | sort -V | tail -1)"
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else
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echo "unsupported target branch $TARGET" >&2
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exit 1
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fi
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BUF_GIT_TARGET_TO_CHECK=".git#tag=${LATEST_STABLE_TAG}"
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check_protos
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;;
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--target)
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# Check against the tip of the target branch.
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#
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# This check ensures that backwards compatibility is never broken on the target branch,
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# which is stricter than guaranteeing compatibility between release tags.
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BUF_GIT_TARGET_TO_CHECK=".git#branch=origin/${TARGET}"
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# The target check can be skipped by including the following trailer `Breaks-Protobuf: true` into the commit message
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if is_check_skipped; then
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echo "Skipping check for protobuf compatibility"
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else
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check_protos
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fi
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;;
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*)
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echo "unknown argument $1" >&2
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exit 1
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;;
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esac
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