prometheus/scripts/sync_codemirror.sh

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#!/usr/bin/env bash
# vim: ts=2 et
# Setting -x is absolutely forbidden as it could leak the GitHub token.
set -uo pipefail
# GITHUB_TOKEN required scope: repo.repo_public
git_mail="prometheus-team@googlegroups.com"
git_user="prombot"
branch="repo_sync_codemirror"
commit_msg="Update codemirror"
pr_title="Synchronize codemirror from prometheus/prometheus"
pr_msg="Propagating changes from prometheus/prometheus default branch."
target_repo="prometheus-community/codemirror-promql"
source_path="web/ui/module/codemirror-promql"
color_red='\e[31m'
color_green='\e[32m'
color_yellow='\e[33m'
color_none='\e[0m'
echo_red() {
echo -e "${color_red}$@${color_none}" 1>&2
}
echo_green() {
echo -e "${color_green}$@${color_none}" 1>&2
}
echo_yellow() {
echo -e "${color_yellow}$@${color_none}" 1>&2
}
GITHUB_TOKEN="${GITHUB_TOKEN:-}"
if [ -z "${GITHUB_TOKEN}" ]; then
echo_red 'GitHub token (GITHUB_TOKEN) not set. Terminating.'
exit 1
fi
# List of files that should not be synced.
excluded_files="CODE_OF_CONDUCT.md LICENSE Makefile.common SECURITY.md .yamllint MAINTAINERS.md"
excluded_dirs=".github .circleci"
# Go to the root of the repo
cd "$(git rev-parse --show-cdup)" || exit 1
source_dir="$(pwd)/${source_path}"
tmp_dir="$(mktemp -d)"
trap 'rm -rf "${tmp_dir}"' EXIT
## Internal functions
github_api() {
local url
url="https://api.github.com/${1}"
shift 1
curl --retry 5 --silent --fail -u "${git_user}:${GITHUB_TOKEN}" "${url}" "$@"
}
get_default_branch() {
github_api "repos/${1}" 2> /dev/null |
jq -r .default_branch
}
push_branch() {
local git_url
git_url="https://${git_user}:${GITHUB_TOKEN}@github.com/${1}"
# stdout and stderr are redirected to /dev/null otherwise git-push could leak
# the token in the logs.
# Delete the remote branch in case it was merged but not deleted.
git push --quiet "${git_url}" ":${branch}" 1>/dev/null 2>&1
git push --quiet "${git_url}" --set-upstream "${branch}" 1>/dev/null 2>&1
}
post_pull_request() {
local repo="$1"
local default_branch="$2"
local post_json
post_json="$(printf '{"title":"%s","base":"%s","head":"%s","body":"%s"}' "${pr_title}" "${default_branch}" "${branch}" "${pr_msg}")"
echo "Posting PR to ${default_branch} on ${repo}"
github_api "repos/${repo}/pulls" --data "${post_json}" --show-error |
jq -r '"PR URL " + .html_url'
}
process_repo() {
local org_repo
local default_branch
org_repo="$1"
mkdir -p "${tmp_dir}/${org_repo}"
echo_green "Processing '${org_repo}'"
default_branch="$(get_default_branch "${org_repo}")"
if [[ -z "${default_branch}" ]]; then
echo "Can't get the default branch."
return
fi
echo "Default branch: ${default_branch}"
# Clone target repo to temporary directory and checkout to new branch
git clone --quiet "https://github.com/${org_repo}.git" "${tmp_dir}/${org_repo}"
cd "${tmp_dir}/${org_repo}" || return 1
git checkout -b "${branch}" || return 1
git rm -r .
cp -ra ${source_dir}/. .
git add .
for excluded_dir in ${excluded_dirs}; do
git restore --staged "${excluded_dir}/*"
git restore "${excluded_dir}/*"
done
for excluded_file in ${excluded_files}; do
git restore --staged "${excluded_file}"
git restore "${excluded_file}"
done
if [[ -n "$(git status --porcelain)" ]]; then
git config user.email "${git_mail}"
git config user.name "${git_user}"
git add .
git commit -s -m "${commit_msg}"
if push_branch "${org_repo}"; then
if ! post_pull_request "${org_repo}" "${default_branch}"; then
return 1
fi
else
echo "Pushing ${branch} to ${org_repo} failed"
return 1
fi
fi
}
process_repo ${target_repo}