Report build error if failed to apply patch

scripts/buildkite/apply_patch.sh

@@ -16,9 +16,21 @@
 # Scripts that use secrets has to be a separate files, not inlined in pipeline:
 # https://buildkite.com/docs/pipelines/secrets#anti-pattern-referencing-secrets-in-your-pipeline-yaml
 
+set -uo pipefail
+
 scripts/phabtalk/apply_patch2.py $ph_buildable_diff \
   --path "${BUILDKITE_BUILD_PATH}"/llvm-project \
   --token $CONDUIT_TOKEN \
   --url $PHABRICATOR_HOST \
   --comment-file apply_patch.txt \
-  --push-branch
+  --push-branch
+
+EXIT_STATUS=$?
+
+if [ $EXIT_STATUS -ne 0 ]; then
+  scripts/phabtalk/add_url_artifact.py --phid="$ph_target_phid" --url="$BUILDKITE_BUILD_URL" --name="Buildkite apply patch"
+  scripts/buildkite/set_build_status.py
+  echo failed
+fi
+
+exit $EXIT_STATUS

scripts/buildkite/set_build_status.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+# Copyright 2020 Google LLC
+#
+# Licensed under the the Apache License v2.0 with LLVM Exceptions (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://llvm.org/LICENSE.txt
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import argparse
+import glob
+import json
+import logging
+import os
+import sys
+import uuid
+
+if __name__ == '__main__':
+    sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from phabtalk.phabtalk import PhabTalk
+from buildkite.utils import format_url
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--log-level', type=str, default='WARNING')
+    parser.add_argument('--success', action='store_true')
+    args = parser.parse_args()
+    logging.basicConfig(level=args.log_level, format='%(levelname)-7s %(message)s')
+    phabtalk = PhabTalk(os.getenv('CONDUIT_TOKEN'), 'https://reviews.llvm.org/api/', False)
+    build_url = f'https://reviews.llvm.org/harbormaster/build/{os.getenv("ph_build_id")}'
+    print(f'Reporting results to Phabricator build {format_url(build_url)}')
+    ph_buildable_diff = os.getenv('ph_buildable_diff')
+    ph_target_phid = os.getenv('ph_target_phid')
+    phabtalk.update_build_status(ph_buildable_diff, ph_target_phid, False, args.success)
+    bug_url = f'https://github.com/google/llvm-premerge-checks/issues/new?assignees=&labels=bug' \
+              f'&template=bug_report.md&title=buildkite build {os.getenv("BUILDKITE_PIPELINE_SLUG")} ' \
+              f'{os.getenv("BUILDKITE_BUILD_NUMBER")}'
+    print(f'{format_url(bug_url, "report issue")}')