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