125 lines
4.1 KiB
Bash
Executable File
125 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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#
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# rabbitmq-relations - relations to be used by formula, referenced
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# via symlink
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#
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# Copyright (C) 2011 Canonical Ltd.
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# Author: Adam Gandelman <adam.gandelman@canonical.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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set -u
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FORMULA_DIR=$(dirname $0)
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ARG0=${0##*/}
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if [[ -e $FORMULA_DIR/rabbitmq-common ]] ; then
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. $FORMULA_DIR/rabbitmq-common
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else
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juju-log "rabbitmq-server: ERROR Could not load $FORMULA_DIR/rabbitmq-common"
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exit 1
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fi
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juju-log "rabbitmq-server: Firing hook $ARG0."
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function install_hook() {
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[[ ! `which pwgen` ]] && apt-get -y install pwgen
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DEBIAN_FRONTEND=noninteractive apt-get -qqy \
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install --no-install-recommends rabbitmq-server
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rc=$?
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# give ubuntu user passwd-less sudo for log access
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echo "ubuntu ALL=(ALL) NOPASSWD:ALL" >/etc/sudoers.d/ubuntu-qa
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chmod 0440 /etc/sudoers.d/ubuntu-qa
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service rabbitmq-server stop
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}
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function amqp_changed() {
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# Connecting clients should request a username and vhost.
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# In reponse, we generate a password for new users,
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# grant the user access on the default vhost "/",
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# and tell it where to reach us.
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RABBIT_USER=`relation-get username`
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VHOST=`relation-get vhost`
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if [[ -z $RABBIT_USER ]] || [[ -z $VHOST ]] ; then
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juju-log "rabbitmq-server: RABBIT_USER||VHOST not yet received from peer."
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exit 0
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fi
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PASSWD_FILE="/var/run/juju/$RABBIT_USER.passwd"
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if [[ -e $PASSWD_FILE ]] ; then
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PASSWORD=$(cat $PASSWD_FILE)
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else
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PASSWORD=$(pwgen 10 1)
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echo $PASSWORD >$PASSWD_FILE
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chmod 0400 $PASSWD_FILE
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fi
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if ! vhost_exists ; then
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juju-log "rabbitmq-server: Creating vhost $VHOST"
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create_vhost
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fi
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if ! user_exists $RABBIT_USER ; then
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juju-log "rabbitmq-server: Creating user $RABBIT_USER"
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user_create $RABBIT_USER admin || exit 1
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else
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juju-log "rabbitmq-server: user $RABBIT_USER already exists."
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fi
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juju-log "rabbitmq-server: Returning credentials for $RABBIT_USER@$HOSTNAME"
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relation-set hostname=`unit-get private-address`
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relation-set password=$PASSWORD
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}
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function cluster_joined {
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REMOTE_UNIT_ID=$(echo $JUJU_REMOTE_UNIT | cut -d/ -f2)
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LOCAL_UNIT_ID=$(echo $JUJU_UNIT_NAME | cut -d/ -f2)
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[[ $LOCAL_UNIT_ID -gt $REMOTE_UNIT_ID ]] && echo "Relation greater" && exit 0
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if [[ ! -e $ERLANG_COOKIE ]] ; then
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juju-log "rabbitmq-server: ERROR Could not find cookie at $ERLANG_COOKIE"
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exit 1
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fi
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relation-set cookie=$(cat $ERLANG_COOKIE) host=$HOSTNAME
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}
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function cluster_changed {
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REMOTE_UNIT_ID=$(echo $JUJU_REMOTE_UNIT | cut -d/ -f2)
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LOCAL_UNIT_ID=$(echo $JUJU_UNIT_NAME | cut -d/ -f2)
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[[ $LOCAL_UNIT_ID -lt $REMOTE_UNIT_ID ]] && echo "Relation lesser" && exit 0
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REMOTE_HOST=$(relation-get host)
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COOKIE_VALUE=$(relation-get cookie)
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[[ -z $REMOTE_HOST ]] || [[ -z $COOKIE_VALUE ]] && \
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juju-log "rabbimtq-server: REMOTE_HOST||COOKIE_VALUE not yet set." \
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exit 0
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service rabbitmq-server stop
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echo -n $COOKIE_VALUE > $ERLANG_COOKIE
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service rabbitmq-server start
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rabbitmqctl reset
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rabbitmqctl cluster rabbit@$HOSTNAME rabbit@$REMOTE_HOST
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rabbitmqctl start_app
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}
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case $ARG0 in
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"install") install_hook ;;
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"start") service rabbitmq-server status || service rabbitmq-server start ;;
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"stop") service rabbitmq-server status && service rabbitmq-server stop ;;
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"amqp-relation-joined") exit 0 ;;
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"amqp-relation-changed") amqp_changed ;;
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"cluster-relation-joined") cluster_joined ;;
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"cluster-relation-changed") cluster_changed ;;
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esac
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rc=$?
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juju-log "rabbitmq-server: Hook $ARG0 complete. Exiting $rc"
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exit $rc
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