download-files.bash

#!/bin/bash -u

docker="docker -H 127.0.0.1:4243"

if [ $# -lt 2 ]
then
	echo >&2 "ERROR: wrong number of parameters."
	echo >&2
	echo >&2 "Usage:"
	echo >&2 "  $0 <image> <path_on_container::url> [path_on_conainer:url] ..."
	exit 1
fi

PREFIX=registry.cloud.tsuru.io/tsuru/
suffix=$1
image=$PREFIX$suffix

command=""
for param in "$@"
do
	if [ "x${param}x" != "x${suffix}x" ]
	then
		parts=(${param//::/ })
		if [ ${#parts[@]} != 2 ]
		then
			echo >&2 "ERROR: Invalid path to URL mapping."
			echo >&2
			echo >&2 "  The valid format is <path_on_container>::<url>"
			exit 1
		fi

		wget_command="wget ${parts[1]} -O ${parts[0]}"
		if [ "x${command}x" = "xx" ]
		then
			command=$wget_command
		else
			command="$command && $wget_command"
		fi
	fi
done

id=`$docker run -d $image /bin/bash -c "$command"`
status=`$docker wait $id`
if [ "$status" = "0" ]
then
	$docker commit $id $image
fi
$docker rm $id