115 lines
4.5 KiB
Bash
Executable File
115 lines
4.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# This script is meant to run on every new commit to master in CircleCI. If the commit comes from a PR, it will
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# check the PR associated with the commit for labels. If the label matches `docs*` it will be cherry-picked
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# to stable-website. If the label matches `backport/*`, it will be cherry-picked to the appropriate `release/*`
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# branch.
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# Requires $CIRCLE_PROJECT_USERNAME, $CIRCLE_PROJECT_REPONAME, and $CIRCLE_SHA1 from CircleCI
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set -e -o pipefail
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# colorized status prompt
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function status {
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tput setaf 4
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echo "$@"
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tput sgr0
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}
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# This function will do the cherry-picking of a commit on a branch
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# Exit 1 if cherry-picking fails
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function cherry_pick_with_slack_notification {
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# Arguments:
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# $1 - branch to cherry-pick to
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# $2 - commit to cherry-pick
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# $3 - url to PR of commit
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local branch="$1"
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local commit="$2"
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local pr_url="$3"
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git checkout "$branch" || exit 1
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# If git cherry-pick fails, we send a failure notification
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if ! git cherry-pick --mainline 1 "$commit"; then
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status "🍒❌ Cherry pick of commit ${commit:0:7} from $pr_url onto $branch failed!"
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curl -X POST -H 'Content-type: application/json' \
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--data \
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"{ \
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\"attachments\": [ \
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{ \
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\"fallback\": \"Cherry pick failed!\", \
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\"text\": \"🍒❌ Cherry picking of <$pr_url|${commit:0:7}> to \`$branch\` failed!\n\nBuild Log: ${CIRCLE_BUILD_URL}\", \
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\"footer\": \"${CIRCLE_PROJECT_USERNAME}/${CIRCLE_PROJECT_REPONAME}\", \
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\"ts\": \"$(date +%s)\", \
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\"color\": \"danger\" \
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} \
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] \
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}" "${CONSUL_SLACK_WEBHOOK_URL}"
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git status
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exit 1
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# Else we send a success notification
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else
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status "🍒✅ Cherry picking of PR commit ${commit:0:7} from $pr_url succeeded!"
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# push changes to the specified branch
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git push origin "$branch"
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curl -X POST -H 'Content-type: application/json' \
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--data \
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"{ \
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\"attachments\": [ \
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{ \
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\"fallback\": \"Cherry pick succeeded!\", \
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\"text\": \"🍒✅ Cherry picking of <$pr_url|${commit:0:7}> to \`$branch\` succeeded!\n\nBuild Log: ${CIRCLE_BUILD_URL}\", \
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\"footer\": \"${CIRCLE_PROJECT_USERNAME}/${CIRCLE_PROJECT_REPONAME}\", \
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\"ts\": \"$(date +%s)\", \
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\"color\": \"good\" \
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} \
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] \
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}" "${CONSUL_SLACK_WEBHOOK_URL}"
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fi
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}
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# search for the PR labels applicable to the specified commit
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resp=$(curl -f -s -H "Authorization: token $GITHUB_TOKEN" "https://api.github.com/search/issues?q=repo:$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME+sha:$CIRCLE_SHA1")
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ret="$?"
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if [[ "$ret" -ne 0 ]]; then
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status "The GitHub API returned $ret which means it was probably rate limited."
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exit $ret
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fi
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# get the count from the GitHub API to check if the commit matched a PR
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count=$(echo "$resp" | jq '.total_count')
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if [[ "$count" -eq 0 ]]; then
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status "This commit was not associated with a PR"
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exit 0
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fi
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# If the API returned a non-zero count, we have found a PR with that commit so we find
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# the labels from the PR
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labels=$(echo "$resp" | jq --raw-output '.items[].labels[] | .name')
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ret="$?"
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pr_url=$(echo "$resp" | jq --raw-output '.items[].pull_request.html_url')
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if [[ "$ret" -ne 0 ]]; then
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status "jq exited with $ret when trying to find label names. Are there labels applied to the PR ($pr_url)?"
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# This can be a valid error but usually this means we do not have any labels so it doesn't signal
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# cherry-picking is possible. Exit 0 for now unless we run into cases where these failures are important.
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exit 0
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fi
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# loop through all labels on the PR
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for label in $labels; do
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git config --local user.email "hashicorp-ci@users.noreply.github.com"
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git config --local user.name "hashicorp-ci"
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status "checking label: $label"
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# if the label matches docs-cherrypick, it will attempt to cherry-pick to stable-website
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if [[ $label =~ docs-cherrypick ]]; then
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status "backporting to stable-website"
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branch="stable-website"
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cherry_pick_with_slack_notification "$branch" "$CIRCLE_SHA1" "$pr_url"
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# else if the label matches backport/*, it will attempt to cherry-pick to the release branch
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elif [[ $label =~ backport/* ]]; then
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status "backporting to $label"
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branch="${label/backport/release}.x"
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cherry_pick_with_slack_notification "$branch" "$CIRCLE_SHA1" "$pr_url"
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fi
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done
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