genesis-index/indexer

#!/bin/bash

# indexer - A CLI for interacting with the Genesis Index
#
# author:  James Hunt <james@niftylogic.com>
# created: 2016-06-22
#

[ -n "$INDEXER_DEBUG" ] && set -x
GENESIS_INDEX=${GENESIS_INDEX:-https://genesis.starkandwayne.com/}
GENESIS_INDEX=${GENESIS_INDEX%%/}

need_auth() {
	if [[ -z ${GENESIS_CREDS} ]]; then
		echo >&2 "You must be authorized to perform this action."
		echo >&2 "Try setting the GENESIS_CREDS environment variable to the username:password"
		exit 1
	fi
}

cmd_help() {
	cat <<EOF
USAGE: $0 version (release|stemcell) NAME [VERSION]
       $0 show    (release|stemcell) NAME
       $0 check   (release|stemcell) NAME VERSION
       $0 create  (release|stemcell) NAME URL
       $0 remove  (release|stemcell) NAME [VERSION]
       $0 latest  (releases|stemcells)
       $0 releases
       $0 stemcells
       $0 help
EOF
}

cmd_create() {
	local USAGE="create (release|stemcell) NAME URL"
	local type=$1 ; shift
	local name=$1 ; shift
	local url=$1  ; shift

	if [[ -z $type || -z $name || -z $url || -n $1 ]]; then
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
	fi

	case $type in
	(release|stemcell)
		need_auth
		curl --fail -Lsk -XPOST -u "${GENESIS_CREDS}" ${GENESIS_INDEX}/v1/${type} \
			-d '{"name":"'$name'","url":"'$url'"}'
		exit $?
		;;
	(*)
		echo >&2 "unrecognized type '$type'"
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
		;;
	esac
	exit 0
}

cmd_remove() {
	local USAGE="remove (release|stemcell) NAME [VERSION]"
	local type=$1 ; shift
	local name=$1 ; shift
	local vers=$1 ; shift

	if [[ -z $type || -z $name || -n $1 ]]; then
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
	fi

	if [[ -z $vers ]]; then
		echo     "This will delete all versions of the '${name}' ${type}!"
		echo  -n "Are you sure? [yes/no]  "
		read CONFIRM
		if [[ ${CONFIRM} != "yes" ]]; then
			echo "Aborting..."
			exit 2
		fi
	fi

	case $type in
	(release|stemcell)
		need_auth
		if [[ -z $vers ]]; then
			curl --fail -Lsk -XDELETE -u "${GENESIS_CREDS}" ${GENESIS_INDEX}/v1/${type}/${name}
		else
			curl --fail -Lsk -XDELETE -u "${GENESIS_CREDS}" ${GENESIS_INDEX}/v1/${type}/${name}/v/${vers}
		fi
		exit $?
		;;
	(*)
		echo >&2 "unrecognized type '$type'"
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
		;;
	esac
	exit 0
}

cmd_check() {
	local USAGE="check (release|stemcell) NAME VERSION"
	local type=$1 ; shift
	local name=$1 ; shift
	local vers=$1 ; shift

	if [[ -z $type || -z $name || -z $vers || -n $1 ]]; then
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
	fi

	case $type in
	(release|stemcell)
		need_auth
		curl --fail -Lsk -XPUT -u "${GENESIS_CREDS}" ${GENESIS_INDEX}/v1/${type}/${name}/v/${vers}
		exit $?
		;;
	(*)
		echo >&2 "unrecognized type '$type'"
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
		;;
	esac
	exit 0
}

cmd_version() {
	local USAGE="version (release|stemcell) NAME [VERSION]"
	local type=$1 ; shift
	local name=$1 ; shift
	local vers=$1 ; shift

	if [[ -z $type || -z $name || -n $1 ]]; then
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
	fi

	case $type in
	(release|stemcell)
		if [[ -z ${vers} ]]; then
			curl --fail -Lsk -XGET ${GENESIS_INDEX}/v1/${type}/${name}/latest
		else
			curl --fail -Lsk -XGET ${GENESIS_INDEX}/v1/${type}/${name}/v/${vers}
		fi
		exit $?
		;;
	(*)
		echo >&2 "unrecognized type '$type'"
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
		;;
	esac
	exit 0
}

cmd_show() {
	local USAGE="show (release|stemcell) NAME"
	local type=$1 ; shift
	local name=$1 ; shift

	if [[ -z $type || -z $name || -n $1 ]]; then
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
	fi

	case $type in
	(release|stemcell)
		curl --fail -Lsk -XGET ${GENESIS_INDEX}/v1/${type}/${name}
		exit $?
		;;
	(*)
		echo >&2 "unrecognized type '$type'"
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
		;;
	esac
	exit 0
}

cmd_latest() {
	local USAGE="latest (releases|stemcells)"
	local type=$1 ; shift

	if [[ -z $type || -n $1 ]]; then
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
	fi

	case $type in
	(release|releases)
		curl --fail -Lsk -XGET ${GENESIS_INDEX}/v1/release/latest
		exit $?
		;;
	(stemcell|stemcells)
		curl --fail -Lsk -XGET ${GENESIS_INDEX}/v1/stemcell/latest
		exit $?
		;;
	(*)
		echo >&2 "unrecognized type '$type'"
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
		;;
	esac
	exit 0
}

cmd_list() {
	local type=$1 ; shift
	local USAGE="$type"
	type=${type%%s}

	if [[ -z $type || -n $1 ]]; then
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
	fi

	case $type in
	(release|stemcell)
		curl --fail -Lsk -XGET ${GENESIS_INDEX}/v1/${type}
		exit $?
		;;
	(*)
		echo >&2 "unrecognized type '$type'"
		echo >&2 "USAGE: $0 $USAGE"
		exit 1
		;;
	esac
	exit 0
}

main() {
	local command=$1 ; shift
	if [[ -z $command ]]; then
		command="help"
	fi

	case $command in
	(help|-h|--help)
		cmd_help $*
		exit 0
		;;
	(create|new|track)
		cmd_create $*
		;;
	(remove|rm|delete)
		cmd_remove $*
		;;
	(check)
		cmd_check $*
		;;
	(version)
		cmd_version $*
		;;
	(show)
		cmd_show $*
		;;
	(latest)
		cmd_latest $*
		;;
	(stemcells|releases)
		cmd_list $command $*
		;;
	(*)
		echo "Invalid command '$command'"
		cmd_help
		exit 1
		;;
	esac
}

main "$@"