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#!/bin/sh
set -u -e -o pipefail
BASEDIR=$(dirname "$0")
BASEDIR=`(cd $BASEDIR; pwd)`
PR_NUMBER=0
PUSH_UPSTREAM=1
FORCE=0
while [[ $# -gt 0 ]]
do
key="$1"
case $key in
--dryrun)
PUSH_UPSTREAM=0
shift # past argument
;;
--force)
FORCE=1
shift # past argument
;;
*) # unknown option
PR_NUMBER="$1" # save it in an array for later
shift # past argument
;;
esac
done
if [ "$PR_NUMBER" -eq 0 ]; then
echo "Merge github PR into the target branches if status is green"
echo
echo "$0 PR_NUMBER [--dryrun] [--force]"
echo
echo --dryrun Performs all operations but does not push the merge back to git@github.com:angular/angular.git.
echo --force Continues even if PR status is not green.
exit 0
fi
if [ -z ${TOKEN:-''} ]; then
echo "############################################################"
echo "############################################################"
echo "WARNING: you should set the TOKEN variable to a github token"
echo "############################################################"
echo "############################################################"
GHCURL="curl"
else
GHCURL="curl -H \"Authorization: token $TOKEN\""
fi
CURRENT_BRANCH=`git rev-parse --abbrev-ref HEAD`
PULL_JSON=`$GHCURL -s https://api.github.com/repos/angular/angular/pulls/$PR_NUMBER`
PR_SHA_COUNT=`node $BASEDIR/utils/json_extract.js commits <<< """$PULL_JSON"""`
STATUS_JSON_URL=`node $BASEDIR/utils/json_extract.js _links.statuses.href <<< """$PULL_JSON"""`
STATUS=`$GHCURL -s $STATUS_JSON_URL | node $BASEDIR/utils/json_extract.js description | cut -d '|' -f1`
PR_LABELS=`$GHCURL -s https://api.github.com/repos/angular/angular/issues/$PR_NUMBER/labels`
PR_ACTION=`echo "$PR_LABELS" | node $BASEDIR/utils/json_extract.js "name=^PR action:"`
PR_TARGET=`echo "$PR_LABELS" | node $BASEDIR/utils/json_extract.js "name=^PR target:"`
PR_CLA=`echo "$PR_LABELS" | node $BASEDIR/utils/json_extract.js "name=^cla"`
MASTER_BRANCH='master'
PATCH_BRANCH=`git ls-remote --heads git@github.com:angular/angular.git | grep -E 'refs\/heads\/[0-9]+\.[0-9]+\.x' | cut -d '/' -f3 | sort -r | head -n1`
if [[ "$PR_ACTION" != "PR action: merge" ]]; then
echo The PR is missing 'PR action: merge' label, found: $PR_ACTION
exit 1
fi
if [[ "$PR_CLA" != "cla: yes" ]]; then
echo The PR is missing 'cla: Yes' label, found: $PR_CLA
exit 1
fi
if [[ "$STATUS" != "All checks passed!" ]]; then
echo PR $PR_NUMBER is failing with: $STATUS
if [[ $FORCE == 1 ]]; then
echo FORCING: --force flag used to ignor PR status.
else
echo Exting...
exit 1
fi
fi
if [[ $PR_TARGET == "PR target: master & patch" ]]; then
MERGE_MASTER=1
MERGE_PATCH=1
elif [[ $PR_TARGET == "PR target: master-only" ]]; then
MERGE_MASTER=1
MERGE_PATCH=0
elif [[ $PR_TARGET == "PR target: patch-only" ]]; then
MERGE_MASTER=0
MERGE_PATCH=1
else
echo "Unknown PR target format: $PR_TARGET"
exit 1;
fi
CHECKOUT_MASTER="git checkout merge_pr_master"
CHECKOUT_PATCH="git checkout merge_pr_patch"
RESTORE_BRANCH="git checkout $CURRENT_BRANCH"
FETCH_PR="git fetch git@github.com:angular/angular.git pull/$PR_NUMBER/head:merge_pr heads/master:merge_pr_master heads/$PATCH_BRANCH:merge_pr_patch -f"
BASE_PR="git checkout merge_pr~$PR_SHA_COUNT -B merge_pr_base"
PUSH_BRANCHES="git push git@github.com:angular/angular.git merge_pr_master:master merge_pr_patch:$PATCH_BRANCH"
SQUASH_PR="git rebase --autosquash --interactive merge_pr_base merge_pr"
CHERRY_PICK_PR="git cherry-pick merge_pr_base..merge_pr"
REWRITE_MESSAGE="git filter-branch -f --msg-filter \"$BASEDIR/utils/github_closes.js $PR_NUMBER\" merge_pr_base..merge_pr"
echo "======================"
echo "GitHub Merge PR Steps"
echo "======================"
echo " $FETCH_PR"
echo " $BASE_PR"
echo " $SQUASH_PR"
echo " $REWRITE_MESSAGE"
if [[ $MERGE_MASTER == 1 ]]; then
echo " $CHECKOUT_MASTER && $CHERRY_PICK_PR"
fi
if [[ $MERGE_PATCH == 1 ]]; then
echo " $CHECKOUT_PATCH && $CHERRY_PICK_PR"
fi
echo " $PUSH_BRANCHES"
echo " $RESTORE_BRANCH"
echo "----------------------"
echo ">>> Fetch PR: $FETCH_PR"
$FETCH_PR
echo ">>> Mark base: $BASE_PR"
$BASE_PR
echo ">>> Autosquash: $SQUASH_PR"
GIT_EDITOR=echo $SQUASH_PR
echo ">>> Rewrite message: $REWRITE_MESSAGE"
# Next line should work, but it errors, hence copy paste the command.
# $REWRITE_MESSAGE
git filter-branch -f --msg-filter "$BASEDIR/utils/github_closes.js $PR_NUMBER" merge_pr_base..merge_pr
if [[ $MERGE_MASTER == 1 ]]; then
echo
echo ">>> Cherry pick to master: $CHECKOUT_MASTER && $CHERRY_PICK_PR"
$CHECKOUT_MASTER
$CHERRY_PICK_PR
fi
if [[ $MERGE_PATCH == 1 ]]; then
echo
echo ">>> Cherry pick to path: $CHECKOUT_PATCH && $CHERRY_PICK_PR"
$CHECKOUT_PATCH
$CHERRY_PICK_PR
fi
$RESTORE_BRANCH
if [[ $PUSH_UPSTREAM == 1 ]]; then
echo ">>> Push branches to angular repo"
$PUSH_BRANCHES
fi
echo
echo ">>>>>> SUCCESS <<<<<< PR#$PR_NUMBER merged."