check_license.sh

#!/bin/sh
#
# Copyright 2018 The Prometheus Authors
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# 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.

check_license() {
  local file=""
  for file in $(find . -type f -iname '*.go' ! -path './vendor/*'); do
    head -n3 "${file}" | grep -Eq "(Copyright|generated|GENERATED)" || echo "  ${file}"
  done
}

licRes=$(check_license)

if [ -n "${licRes}" ]; then
  echo "license header checking failed:"
  echo "${licRes}"
  exit 255
fi