ceph-ansible/contrib/backport_to_stable_branch.sh

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#!/usr/bin/env bash
set -e
shopt -s extglob # enable extended pattern matching features
#############
# VARIABLES #
#############
stable_branch=$1
commit=$2
bkp_branch_name=$3
bkp_branch_name_prefix=bkp
bkp_branch=$bkp_branch_name-$bkp_branch_name_prefix
#############
# FUNCTIONS #
#############
verify_commit () {
for com in ${commit//,/ }; do
if [[ $(git cat-file -t "$com" 2>/dev/null) != commit ]]; then
echo "$com does not exist in your tree"
echo "Run 'git fetch origin master && git pull origin master'"
exit 1
fi
done
}
git_status () {
if [[ $(git status --porcelain | wc -l) -gt 0 ]]; then
echo "It looks like you have not committed changes:"
echo ""
git status --short
echo ""
echo ""
echo "Press ENTER to continue or Ctrl+c to break."
read -r
fi
}
checkout () {
git checkout --no-track -b "$bkp_branch" origin/"$stable_branch"
}
cherry_pick () {
local x
for com in ${commit//,/ }; do
x="$x $com"
done
# Trim the first white space and use an array
# Reference: https://github.com/koalaman/shellcheck/wiki/SC2086#exceptions
x=(${x##*( )})
git cherry-pick -x -s "${x[@]}"
}
push () {
git push origin "$bkp_branch"
}
create_pr () {
hub pull-request -h ceph/ceph-ansible:"$bkp_branch" -b "$stable_branch" -m "[skip ci] $bkp_branch"
}
cleanup () {
echo "Moving back to previous branch"
git checkout -
git branch -D "$bkp_branch"
}
test_args () {
if [ $# -ne 3 ]; then
echo "Please run the script like this: ./contrib/backport_to_stable_branch.sh STABLE_BRANCH_NAME COMMIT_SHA1 BACKPORT_BRANCH_NAME"
echo "We accept multiple commits as soon as they are commas-separated."
echo "e.g: ./contrib/backport_to_stable_branch.sh stable-2.2 6892670d317698771be7e96ce9032bc27d3fd1e5,8756c553cc8c213fc4996fc5202c7b687eb645a3 my-work"
exit 1
fi
}
########
# MAIN #
########
test_args "$@"
git_status
verify_commit
checkout
cherry_pick
push
create_pr
cleanup