#!/bin/bash

# Copyright 2014 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.

# This script sets up a go workspace locally and builds all go components.

set -o errexit
set -o nounset
set -o pipefail

hackdir=$(CDPATH="" cd $(dirname $0); pwd)

# Set the environment variables required by the build.
. "${hackdir}/config-go.sh"

# Go to the top of the tree.
cd "${KUBE_REPO_ROOT}"

# Check for `go` binary and set ${GOPATH}.
kube::setup_go_environment

# Fetch the version.
version_ldflags=$(kube::version_ldflags)

if [[ $# == 0 ]]; then
  # Update $@ with the default list of targets to build.
  set -- \
      cmd/proxy \
      cmd/apiserver \
      cmd/controller-manager \
      cmd/kubelet cmd/kubecfg \
      plugin/cmd/scheduler
fi

binaries=()
for arg; do
  binaries+=("${KUBE_GO_PACKAGE}/${arg}")
done

# Use eval to preserve embedded quoted strings.
eval "goflags=(${GOFLAGS:-})"

# Note that the flags to 'go build' are duplicated in the salt build setup
# (release/build-release.sh) for our cluster deploy.  If we add more command
# line options to our standard build we'll want to duplicate them there.  As we
# move to distributing pre- built binaries we can eliminate this duplication.
go install "${goflags[@]:+${goflags[@]}}" \
    -ldflags "${version_ldflags}" \
    "${binaries[@]}"