mirror of
https://gitlab.isc.org/isc-projects/bind9
synced 2025-08-22 10:10:06 +00:00
4cb8b13987
All changes in this commit were automated using the command: shfmt -w -i 2 -ci -bn . $(find . -name "*.sh.in") By default, only *.sh and files without extension are checked, so *.sh.in files have to be added additionally. (See mvdan/sh#944)
266 lines
6.9 KiB
Bash
Executable File
266 lines
6.9 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
|
|
#
|
|
# SPDX-License-Identifier: MPL-2.0
|
|
#
|
|
# This Source Code Form is subject to the terms of the Mozilla Public
|
|
# License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
# file, you can obtain one at https://mozilla.org/MPL/2.0/.
|
|
#
|
|
# See the COPYRIGHT file distributed with this work for additional
|
|
# information regarding copyright ownership.
|
|
|
|
set -e
|
|
|
|
SELF="$(basename $0)"
|
|
SELF="${SELF/-/ }"
|
|
|
|
STATE_FILE=".git/REPLAY_MERGE"
|
|
DONT_TAG=${DONT_TAG:=false}
|
|
DONT_PUSH=${DONT_PUSH:=false}
|
|
DONT_ACCEPT=${DONT_ACCEPT:=false}
|
|
|
|
die() {
|
|
for MESSAGE in "$@"; do
|
|
echo -e "${MESSAGE}" >&2
|
|
done
|
|
exit 1
|
|
}
|
|
|
|
die_with_usage() {
|
|
die "Usage:" \
|
|
"" \
|
|
"${SELF} [options] <merge_commit_id> <target_remote> <target_branch>" \
|
|
"${SELF} --continue" \
|
|
"${SELF} --abort" \
|
|
"" \
|
|
"options:" \
|
|
" --no-push" \
|
|
" --no-tag" \
|
|
""
|
|
}
|
|
|
|
die_with_continue_instructions() {
|
|
die "" \
|
|
"Replay interrupted. Conflicts need to be fixed manually." \
|
|
"When done, run \"${SELF} --continue\"." \
|
|
"Use \"${SELF} --abort\" to abort the replay."
|
|
}
|
|
|
|
die_before_push() {
|
|
die "" \
|
|
"Replay finished locally. Now check the result in ${REPLAY_BRANCH}." \
|
|
"When done, run \"${SELF} --continue\" to push and create MR in gitlab." \
|
|
"Use \"${SELF} --abort\" to abort the replay."
|
|
}
|
|
|
|
die_if_wrong_dir() {
|
|
if [[ ! -d ".git" ]]; then
|
|
die "You need to run this command from the toplevel of the working tree."
|
|
fi
|
|
}
|
|
|
|
die_if_not_in_progress() {
|
|
die_if_wrong_dir
|
|
if [[ ! -f "${STATE_FILE}" ]]; then
|
|
die "No replay-merge in progress?"
|
|
fi
|
|
}
|
|
|
|
die_if_in_progress() {
|
|
die_if_wrong_dir
|
|
if [[ -f "${STATE_FILE}" ]]; then
|
|
die "Another replay-merge in progress. Use --continue or --abort."
|
|
fi
|
|
}
|
|
|
|
die_if_local_behind_target() {
|
|
TARGET_REF_HEAD="$(git rev-list --max-count=1 "${TARGET_REF}")"
|
|
if [[ "$(git merge-base "${TARGET_REF}" "${TARGET_BRANCH}")" != "${TARGET_REF_HEAD}" ]]; then
|
|
die "Local branch ${TARGET_BRANCH} is behind ${TARGET_REF}, cannot merge into it." \
|
|
"Update or remove the local branch, then run \"${SELF} --continue\"." \
|
|
"Use \"${SELF} --abort\" to abort the replay."
|
|
fi
|
|
}
|
|
|
|
branch_exists() {
|
|
ESCAPED_BRANCH_NAME=${1//\//\\\/}
|
|
BRANCH_REGEX="/^(remotes\/)?${ESCAPED_BRANCH_NAME}$/"
|
|
if [[ -n "$(git branch -a | awk "\$NF ~ ${BRANCH_REGEX} {print \$NF}")" ]]; then
|
|
return 0
|
|
else
|
|
return 1
|
|
fi
|
|
}
|
|
|
|
go() {
|
|
# Process parameters.
|
|
SOURCE_COMMIT="$1"
|
|
TARGET_REMOTE="$2"
|
|
TARGET_BRANCH="$3"
|
|
TARGET_REF="${TARGET_REMOTE}/${TARGET_BRANCH}"
|
|
# Establish the range of commits comprising the source branch.
|
|
REPLAY_COMMIT_RANGE="$(
|
|
git show --format="%P" "${SOURCE_COMMIT}" 2>&1 \
|
|
| sed -n "1s/\([0-9a-f]\{40\}\) \([0-9a-f]\{40\}\)/\1..\2/p;"
|
|
)"
|
|
if [[ -z "${REPLAY_COMMIT_RANGE}" ]]; then
|
|
die "${SOURCE_COMMIT} is not a valid merge commit ID."
|
|
fi
|
|
# Extract the name of the source branch.
|
|
SOURCE_BRANCH="$(
|
|
git log --max-count=1 --format="%B" "${SOURCE_COMMIT}" \
|
|
| sed -n "s/^Merge branch '\([^'][^']*\).*/\1/p;" \
|
|
| head -n 1
|
|
)"
|
|
if [[ -z "${SOURCE_BRANCH}" ]]; then
|
|
die "Unable to extract source branch name from ${SOURCE_COMMIT}."
|
|
fi
|
|
# Ensure the target ref is valid.
|
|
if ! branch_exists "${TARGET_REF}"; then
|
|
die "${TARGET_REF} is not a valid replay target."
|
|
fi
|
|
# Abort if a local branch with the name about to be used for replaying
|
|
# the merge already exists.
|
|
REPLAY_BRANCH="${SOURCE_BRANCH}-${TARGET_BRANCH}"
|
|
if branch_exists "${REPLAY_BRANCH}"; then
|
|
die "Local branch with name ${REPLAY_BRANCH} already exists." \
|
|
"Cannot use it for replaying a merge."
|
|
fi
|
|
# Get the name of the currently checked out branch so that it can be
|
|
# checked out again once the replay is finished.
|
|
CHECKED_OUT_BRANCH="$(git branch | awk "\$1 == \"*\" {print \$2}")"
|
|
# Store state in case it needs to be restored later.
|
|
cat <<-EOF >"${STATE_FILE}"
|
|
CHECKED_OUT_BRANCH="${CHECKED_OUT_BRANCH}"
|
|
SOURCE_COMMIT="${SOURCE_COMMIT}"
|
|
SOURCE_BRANCH="${SOURCE_BRANCH}"
|
|
REPLAY_BRANCH="${REPLAY_BRANCH}"
|
|
TARGET_REMOTE="${TARGET_REMOTE}"
|
|
TARGET_BRANCH="${TARGET_BRANCH}"
|
|
TARGET_REF="${TARGET_REF}"
|
|
EOF
|
|
# Announce the plan.
|
|
echo "Attempting to replay ${REPLAY_COMMIT_RANGE} on top of ${TARGET_REF} in ${REPLAY_BRANCH}..."
|
|
# Switch to the replay branch.
|
|
git checkout -t -b "${REPLAY_BRANCH}" "${TARGET_REF}" >/dev/null
|
|
# Try replaying the branch. If there is any conflict, the command will
|
|
# fail, which means we need to bail and let the user fix the current
|
|
# cherry-pick manually, expecting "git replay-merge --continue" to be
|
|
# used afterwards. If there is no conflict, just proceed with what
|
|
# --continue would do.
|
|
if ! git cherry-pick -x "${REPLAY_COMMIT_RANGE}"; then
|
|
die_with_continue_instructions
|
|
fi
|
|
resume
|
|
}
|
|
|
|
resume() {
|
|
# If cherry-picking has not yet been completed, resume it. If it
|
|
# fails, bail. If if succeeds, we can proceed with merging.
|
|
if [[ -f ".git/sequencer/todo" ]]; then
|
|
if ! git cherry-pick --continue; then
|
|
die_with_continue_instructions
|
|
fi
|
|
fi
|
|
|
|
if $DONT_PUSH; then
|
|
die_before_push
|
|
fi
|
|
|
|
if $DONT_ACCEPT; then
|
|
AUTO_MERGE=""
|
|
else
|
|
AUTO_MERGE="merge_request.merge_when_pipeline_succeeds"
|
|
fi
|
|
|
|
TITLE=""
|
|
LABEL_VERSION=""
|
|
LABEL_BACKPORT=""
|
|
|
|
if ! $DONT_TAG && [[ $TARGET_BRANCH == bind-9.[0-9][0-9] ]]; then
|
|
version="${TARGET_BRANCH#bind-}"
|
|
|
|
TITLE="$(git show --format=%b ${SOURCE_COMMIT} | head -n 1)"
|
|
TITLE="merge_request.title=[${version}] ${TITLE}"
|
|
|
|
LABEL_VERSION="merge_request.label=v${version}"
|
|
LABEL_BACKPORT="merge_request.label=Backport"
|
|
fi
|
|
|
|
git push -u ${TARGET_REMOTE} \
|
|
-o merge_request.create \
|
|
-o merge_request.remove_source_branch \
|
|
-o "merge_request.target=${TARGET_BRANCH}" \
|
|
${AUTO_MERGE:+-o} "${AUTO_MERGE}" \
|
|
${TITLE:+-o} "${TITLE}" \
|
|
${LABEL_VERSION:+-o} "${LABEL_VERSION}" \
|
|
${LABEL_BACKPORT:+-o} "${LABEL_BACKPORT}" \
|
|
"${REPLAY_BRANCH}:${REPLAY_BRANCH}"
|
|
|
|
cleanup
|
|
exit 0
|
|
}
|
|
|
|
cleanup() {
|
|
# Restore working copy state from before the replay was started,
|
|
# ignoring any potential errors to prevent "set -e" from interfering.
|
|
{
|
|
git merge --abort
|
|
git cherry-pick --abort
|
|
git checkout "${CHECKED_OUT_BRANCH}"
|
|
} &>/dev/null || true
|
|
rm -f "${STATE_FILE}"
|
|
}
|
|
|
|
cd $(git rev-parse --show-toplevel)
|
|
|
|
next_action="go"
|
|
args=3
|
|
while [[ $# -ge 1 ]]; do
|
|
case "$1" in
|
|
"--no-push")
|
|
DONT_PUSH=true
|
|
;;
|
|
"--push")
|
|
DONT_PUSH=false
|
|
;;
|
|
"--no-tag")
|
|
DONT_TAG=true
|
|
;;
|
|
"--tag")
|
|
DONT_TAG=false
|
|
;;
|
|
"--abort")
|
|
die_if_not_in_progress
|
|
source "${STATE_FILE}"
|
|
next_action="cleanup"
|
|
args=0
|
|
shift
|
|
break
|
|
;;
|
|
"--continue")
|
|
die_if_not_in_progress
|
|
source "${STATE_FILE}"
|
|
next_action="resume"
|
|
args=0
|
|
shift
|
|
break
|
|
;;
|
|
--*)
|
|
die_with_usage
|
|
;;
|
|
*)
|
|
break
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
if [[ $# -ne $args ]]; then
|
|
die_with_usage
|
|
fi
|
|
|
|
$next_action "$@"
|