atlantis-mkbase

## Copyright 2014 Ooyala, Inc. All rights reserved.
##
## This file is 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.

#!/bin/bash -ex

OVERLAY_DIR="/opt/atlantis/builder/layers"

usage() { echo "Usage: $0 -f <base_image_tgz> [-p <path_to_layers> ]"; exit 1; }

while getopts ":p:f:" o; do
	case "${o}" in
		p)
			OVERLAY_DIR=${OPTARG}
			;;
		f)
			IMPORT_IMAGE=${OPTARG}
			;;
		*)
			usage
			;;
	esac
done

if [ -z $OVERLAY_DIR ] || [ -z $IMPORT_IMAGE ]; then
	usage
fi

if [ -z $REGISTRY ]; then
	echo "REGISTRY not in environment!"
	exit 1
fi

if ! [ $(id -u) -eq 0 ]; then
    echo "please run as root!"
    exit 1
fi

# The base image is names ex: precise64-0.2.0
IMAGE_NAME=$(cat $OVERLAY_DIR/basename.txt)-$(cat $OVERLAY_DIR/version.txt)

# Extract files from the image.
rm -rf /tmp/base && mkdir -p /tmp/base
tar -C /tmp/base -xf $IMPORT_IMAGE

# Run the provisioning script.
cp -dR --preserve=mode $OVERLAY_DIR/base/. /tmp/base/
cp -f /etc/resolv.conf /tmp/base/etc/resolv.conf
chroot /tmp/base /bin/bash -c "su - -c /sbin/provision"

# Push the image to docker registry.
tar -C /tmp/base -c . | docker import - $REGISTRY/base/$IMAGE_NAME
docker push $REGISTRY/base/$IMAGE_NAME

# Cleanup
rm -rf /tmp/base