Files
coder/scripts/release/check_commit_metadata.sh
T
Mathias Fredriksson e96fdbed26 feat: Add release.sh script and detect breaking changes (#5366)
This commit introduces three new scripts:

- `release.sh` To be run by a user on their local machine to preview and
  create a new release (tag + push)
- `check_commit_metadata.sh` For e.g. detecting breaking changes
- `genereate_release_notes.sh` To display the generated release notes,
  used for previews and in `publish_release.sh`

The `release.sh` script can be run without arguments, and it will
automatically determine if we're to do a patch or minor release. A minor
release can be forced via `--minor` flag.

Breaking changes can be annotated either via commit/merge title prefix
(`feat!:`, `feat(api)!:`), or by adding the `release/breaking` label to
the PR that was merged (on GitHub).

Related #5233
2022-12-15 15:41:30 +02:00

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#!/usr/bin/env bash
# Usage: source ./check_commit_metadata.sh <from revision> <to revision>
# Usage: ./check_commit_metadata.sh <from revision> <to revision>
#
# Example: ./check_commit_metadata.sh v0.13.1 971e3678
#
# When sourced, this script will populate the COMMIT_METADATA_* variables
# with the commit metadata for each commit in the revision range.
#
# Because this script does some expensive lookups via the GitHub API, its
# results will be cached in the environment and restored if this script is
# sourced a second time with the same arguments.
set -euo pipefail
# shellcheck source=scripts/lib.sh
source "$(dirname "${BASH_SOURCE[0]}")/../lib.sh"
from_ref=${1:-}
to_ref=${2:-}
if [[ -z $from_ref ]]; then
error "No from_ref specified"
fi
if [[ -z $to_ref ]]; then
error "No to_ref specified"
fi
range="$from_ref..$to_ref"
# Check dependencies.
dependencies gh
COMMIT_METADATA_BREAKING=0
declare -A COMMIT_METADATA_TITLE COMMIT_METADATA_CATEGORY
main() {
# Match a commit prefix pattern, e.g. feat: or feat(site):.
prefix_pattern="^([a-z]+)(\([a-z]*\))?:"
# If a commit contains this title prefix or the source PR contains the
# label, patch releases will not be allowed.
# This regex matches both `feat!:` and `feat(site)!:`.
breaking_title="^[a-z]+(\([a-z]*\))?!:"
breaking_label=release/breaking
breaking_category=breaking
# Get abbreviated and full commit hashes and titles for each commit.
mapfile -t commits < <(git log --no-merges --pretty=format:"%h %H %s" "$range")
# If this is a tag, use rev-list to find the commit it points to.
from_commit=$(git rev-list -n 1 "$from_ref")
# Get the committer date of the commit so that we can list PRs merged.
from_commit_date=$(git show --no-patch --date=short --format=%cd "$from_commit")
# Get the labels for all PRs merged since the last release, this is
# inexact based on date, so a few PRs part of the previous release may
# be included.
#
# Example output:
#
# 27386d49d08455b6f8fbf2c18f38244d03fda892 label:security
# d9f2aaf3b430d8b6f3d5f24032ed6357adaab1f1
# fd54512858c906e66f04b0744d8715c2e0de97e6 label:stale label:enhancement
mapfile -t pr_labels_raw < <(
gh pr list \
--base main \
--state merged \
--limit 10000 \
--search "merged:>=$from_commit_date" \
--json mergeCommit,labels \
--jq '.[] | .mergeCommit.oid + " " + (["label:" + .labels[].name] | join(" "))'
)
declare -A labels
for entry in "${pr_labels_raw[@]}"; do
commit_sha_long=${entry%% *}
all_labels=${entry#* }
labels[$commit_sha_long]=$all_labels
done
for commit in "${commits[@]}"; do
mapfile -d ' ' -t parts <<<"$commit"
commit_sha_short=${parts[0]}
commit_sha_long=${parts[1]}
commit_prefix=${parts[2]}
# Safety-check, guarantee all commits had their metadata fetched.
if [[ ! -v labels[$commit_sha_long] ]]; then
error "Metadata missing for commit $commit_sha_short"
fi
# Store the commit title for later use.
title=${parts[*]:2}
title=${title%$'\n'}
COMMIT_METADATA_TITLE[$commit_sha_short]=$title
# First, check the title for breaking changes. This avoids doing a
# GH API request if there's a match.
if [[ $commit_prefix =~ $breaking_title ]] || [[ ${labels[$commit_sha_long]} = *"label:$breaking_label"* ]]; then
COMMIT_METADATA_CATEGORY[$commit_sha_short]=$breaking_category
COMMIT_METADATA_BREAKING=1
continue
fi
if [[ $commit_prefix =~ $prefix_pattern ]]; then
commit_prefix=${BASH_REMATCH[1]}
fi
case $commit_prefix in
feat | fix)
COMMIT_METADATA_CATEGORY[$commit_sha_short]=$commit_prefix
;;
*)
COMMIT_METADATA_CATEGORY[$commit_sha_short]=other
;;
esac
done
}
declare_print_commit_metadata() {
declare -p COMMIT_METADATA_BREAKING COMMIT_METADATA_TITLE COMMIT_METADATA_CATEGORY
}
export_commit_metadata() {
_COMMIT_METADATA_CACHE="${range}:$(declare_print_commit_metadata)"
export _COMMIT_METADATA_CACHE COMMIT_METADATA_BREAKING COMMIT_METADATA_TITLE COMMIT_METADATA_CATEGORY
}
# _COMMIT_METADATA_CACHE is used to cache the results of this script in
# the environment because bash arrays are not passed on to subscripts.
if [[ ${_COMMIT_METADATA_CACHE:-} == "${range}:"* ]]; then
eval "${_COMMIT_METADATA_CACHE#*:}"
else
main
fi
export_commit_metadata
# Make it easier to debug this script by printing the associative array
# when it's not sourced.
if ! issourced; then
declare_print_commit_metadata
fi