#!/usr/bin/env bash

# Copyright 2015 Google Inc. All rights reserved.
#
# 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.

set -e

repo_path="github.com/google/cadvisor"

version=$( cat version/VERSION )
revision=$( git rev-parse --short HEAD 2> /dev/null || echo 'unknown' )
branch=$( git rev-parse --abbrev-ref HEAD 2> /dev/null || echo 'unknown' )
host=$( hostname -f )
build_date=$( date +%Y%m%d-%H:%M:%S )
go_version=$( go version | sed -e 's/^[^0-9.]*\([0-9.]*\).*/\1/' )

if [ "$(go env GOOS)" = "windows" ]; then
  ext=".exe"
fi

# go 1.4 requires ldflags format to be "-X key value", not "-X key=value"
ldseparator="="
if [ "${go_version:0:3}" = "1.4" ]; then
	ldseparator=" "
fi

ldflags="
  -X ${repo_path}/version.Version${ldseparator}${version}
  -X ${repo_path}/version.Revision${ldseparator}${revision}
  -X ${repo_path}/version.Branch${ldseparator}${branch}
  -X ${repo_path}/version.BuildUser${ldseparator}${USER}@${host}
  -X ${repo_path}/version.BuildDate${ldseparator}${build_date}
  -X ${repo_path}/version.GoVersion${ldseparator}${go_version}"

echo " >   cadvisor"
godep go build -ldflags "${ldflags}" -o cadvisor${ext} ${repo_path}

exit 0
