#!/bin/sh

##  The contents of this file are subject to the Mozilla Public License

##  Version 1.1 (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.mozilla.org/MPL/

##

##  Software distributed under the License is distributed on an "AS IS"

##  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See

##  the License for the specific language governing rights and

##  limitations under the License.

##

##  The Original Code is RabbitMQ.

##

##  The Initial Developer of the Original Code is VMware, Inc.

##  Copyright (c) 2007-2013 VMware, Inc.  All rights reserved.

##

##

##   OCF Resource Agent compliant rabbitmq-server resource script.

##

## OCF instance parameters

##   OCF_RESKEY_server

##   OCF_RESKEY_ctl

##   OCF_RESKEY_nodename

##   OCF_RESKEY_ip

##   OCF_RESKEY_port

##   OCF_RESKEY_config_file

##   OCF_RESKEY_log_base

##   OCF_RESKEY_mnesia_base

##   OCF_RESKEY_server_start_args

##   OCF_RESKEY_pid_file

#######################################################################

# Initialization:

: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/resource.d/heartbeat}

. ${OCF_FUNCTIONS_DIR}/.ocf-shellfuncs

#######################################################################

OCF_RESKEY_server_default="/usr/sbin/rabbitmq-server"

OCF_RESKEY_ctl_default="/usr/sbin/rabbitmqctl"

OCF_RESKEY_nodename_default="rabbit@localhost"

OCF_RESKEY_log_base_default="/var/log/rabbitmq"

OCF_RESKEY_pid_file_default="/var/run/rabbitmq/pid"

: ${OCF_RESKEY_server=${OCF_RESKEY_server_default}}

: ${OCF_RESKEY_ctl=${OCF_RESKEY_ctl_default}}

: ${OCF_RESKEY_nodename=${OCF_RESKEY_nodename_default}}

: ${OCF_RESKEY_log_base=${OCF_RESKEY_log_base_default}}

: ${OCF_RESKEY_pid_file=${OCF_RESKEY_pid_file_default}}

meta_data() {

    cat <

<resource-agent name="rabbitmq-server">

<version>1.0</version>

<longdesc lang="en">

Resource agent for RabbitMQ-server

</longdesc>

<shortdesc lang="en">Resource agent for RabbitMQ-server</shortdesc>

<parameters>

<parameter name="server" unique="0" required="0">

<longdesc lang="en">

The path to the rabbitmq-server script

</longdesc>

<shortdesc lang="en">Path to rabbitmq-server</shortdesc>

<content type="string" default="${OCF_RESKEY_server_default}" />

</parameter>

<parameter name="ctl" unique="0" required="0">

<longdesc lang="en">

The path to the rabbitmqctl script

</longdesc>

<shortdesc lang="en">Path to rabbitmqctl</shortdesc>

<content type="string" default="${OCF_RESKEY_ctl_default}" />

</parameter>

<parameter name="nodename" unique="0" required="0">

<longdesc lang="en">

The node name for rabbitmq-server

</longdesc>

<shortdesc lang="en">Node name</shortdesc>

<content type="string" default="${OCF_RESKEY_nodename_default}" />

</parameter>

<parameter name="ip" unique="0" required="0">

<longdesc lang="en">

The IP address for rabbitmq-server to listen on

</longdesc>

<shortdesc lang="en">IP Address</shortdesc>

<content type="string" default="" />

</parameter>

<parameter name="port" unique="0" required="0">

<longdesc lang="en">

The IP Port for rabbitmq-server to listen on

</longdesc>

<shortdesc lang="en">IP Port</shortdesc>

<content type="integer" default="" />

</parameter>

<parameter name="config_file" unique="0" required="0">

<longdesc lang="en">

Location of the config file (without the .config suffix)

</longdesc>

<shortdesc lang="en">Config file path (without the .config suffix)</shortdesc>

<content type="string" default="" />

</parameter>

<parameter name="log_base" unique="0" required="0">

<longdesc lang="en">

Location of the directory under which logs will be created

</longdesc>

<shortdesc lang="en">Log base path</shortdesc>

<content type="string" default="${OCF_RESKEY_log_base_default}" />

</parameter>

<parameter name="mnesia_base" unique="0" required="0">

<longdesc lang="en">

Location of the directory under which mnesia will store data

</longdesc>

<shortdesc lang="en">Mnesia base path</shortdesc>

<content type="string" default="" />

</parameter>

<parameter name="server_start_args" unique="0" required="0">

<longdesc lang="en">

Additional arguments provided to the server on startup

</longdesc>

<shortdesc lang="en">Server start arguments</shortdesc>

<content type="string" default="" />

</parameter>

<parameter name="pid_file" unique="0" required="0">

<longdesc lang="en">

Location of the file in which the pid will be stored

</longdesc>

<shortdesc lang="en">Pid file path</shortdesc>

<content type="string" default="${OCF_RESKEY_pid_file_default}" />

</parameter>

</parameters>

<actions>

<action name="start"        timeout="600" />

<action name="stop"         timeout="120" />

<action name="status"       timeout="20" interval="10" />

<action name="monitor"      timeout="20" interval="10" />

<action name="validate-all" timeout="30" />

<action name="meta-data"    timeout="5" />

</actions>

</resource-agent>

END

}

rabbit_usage() {

    cat <

usage: $0 {start|stop|status|monitor|validate-all|meta-data}

Expects to have a fully populated OCF RA-compliant environment set.

END

}

RABBITMQ_SERVER=$OCF_RESKEY_server

RABBITMQ_CTL=$OCF_RESKEY_ctl

RABBITMQ_NODENAME=$OCF_RESKEY_nodename

RABBITMQ_NODE_IP_ADDRESS=$OCF_RESKEY_ip

RABBITMQ_NODE_PORT=$OCF_RESKEY_port

RABBITMQ_CONFIG_FILE=$OCF_RESKEY_config_file

RABBITMQ_LOG_BASE=$OCF_RESKEY_log_base

RABBITMQ_MNESIA_BASE=$OCF_RESKEY_mnesia_base

RABBITMQ_SERVER_START_ARGS=$OCF_RESKEY_server_start_args

RABBITMQ_PID_FILE=$OCF_RESKEY_pid_file

[ ! -z $RABBITMQ_NODENAME ] && NODENAME_ARG="-n $RABBITMQ_NODENAME"

[ ! -z $RABBITMQ_NODENAME ]            && export RABBITMQ_NODENAME

ensure_pid_dir () {

    PID_DIR=`dirname ${RABBITMQ_PID_FILE}`

    if [ ! -d ${PID_DIR} ] ; then

        mkdir -p ${PID_DIR}

        chown -R rabbitmq:rabbitmq ${PID_DIR}

        chmod 755 ${PID_DIR}

    fi

    return $OCF_SUCCESS

}

remove_pid () {

    rm -f ${RABBITMQ_PID_FILE}

    rmdir `dirname ${RABBITMQ_PID_FILE}` || :

}

export_vars() {

    [ ! -z $RABBITMQ_NODE_IP_ADDRESS ]     && export RABBITMQ_NODE_IP_ADDRESS

    [ ! -z $RABBITMQ_NODE_PORT ]           && export RABBITMQ_NODE_PORT

    [ ! -z $RABBITMQ_CONFIG_FILE ]         && export RABBITMQ_CONFIG_FILE

    [ ! -z $RABBITMQ_LOG_BASE ]            && export RABBITMQ_LOG_BASE

    [ ! -z $RABBITMQ_MNESIA_BASE ]         && export RABBITMQ_MNESIA_BASE

    [ ! -z $RABBITMQ_SERVER_START_ARGS ]   && export RABBITMQ_SERVER_START_ARGS

    [ ! -z $RABBITMQ_PID_FILE ]            && ensure_pid_dir && export RABBITMQ_PID_FILE

}

rabbit_validate_partial() {

    if [ ! -x $RABBITMQ_SERVER ]; then

        ocf_log err "rabbitmq-server server $RABBITMQ_SERVER does not exist or is not executable";

        exit $OCF_ERR_INSTALLED;

    fi

    if [ ! -x $RABBITMQ_CTL ]; then

        ocf_log err "rabbitmq-server ctl $RABBITMQ_CTL does not exist or is not executable";

        exit $OCF_ERR_INSTALLED;

    fi

}

rabbit_validate_full() {

    if [ ! -z $RABBITMQ_CONFIG_FILE ] && [ ! -e "${RABBITMQ_CONFIG_FILE}.config" ]; then

        ocf_log err "rabbitmq-server config_file ${RABBITMQ_CONFIG_FILE}.config does not exist or is not a file";

        exit $OCF_ERR_INSTALLED;

    fi

    if [ ! -z $RABBITMQ_LOG_BASE ] && [ ! -d $RABBITMQ_LOG_BASE ]; then

        ocf_log err "rabbitmq-server log_base $RABBITMQ_LOG_BASE does not exist or is not a directory";

        exit $OCF_ERR_INSTALLED;

    fi

    if [ ! -z $RABBITMQ_MNESIA_BASE ] && [ ! -d $RABBITMQ_MNESIA_BASE ]; then

        ocf_log err "rabbitmq-server mnesia_base $RABBITMQ_MNESIA_BASE does not exist or is not a directory";

        exit $OCF_ERR_INSTALLED;

    fi

    rabbit_validate_partial

    return $OCF_SUCCESS

}

rabbit_status() {

    rabbitmqctl_action "status"

}

rabbit_wait() {

    rabbitmqctl_action "wait" $1

}

rabbitmqctl_action() {

    local rc

    local action

    action=$@

    $RABBITMQ_CTL $NODENAME_ARG $action > /dev/null 2> /dev/null

    rc=$?

    case "$rc" in

        0)

            ocf_log debug "RabbitMQ server is running normally"

            return $OCF_SUCCESS

            ;;

        2)

            ocf_log debug "RabbitMQ server is not running"

            return $OCF_NOT_RUNNING

            ;;

        *)

            ocf_log err "Unexpected return from rabbitmqctl $NODENAME_ARG $action: $rc"

            exit $OCF_ERR_GENERIC

    esac

}

rabbit_start() {

    local rc

    if rabbit_status; then

        ocf_log info "Resource already running."

        return $OCF_SUCCESS

    fi

    export_vars

    setsid sh -c "$RABBITMQ_SERVER > ${RABBITMQ_LOG_BASE}/startup_log 2> ${RABBITMQ_LOG_BASE}/startup_err" &

    # Wait for the server to come up.

    # Let the CRM/LRM time us out if required

    rabbit_wait $RABBITMQ_PID_FILE

    rc=$?

    if [ "$rc" != $OCF_SUCCESS ]; then

        remove_pid

        ocf_log info "rabbitmq-server start failed: $rc"

        exit $OCF_ERR_GENERIC

    fi

    return $OCF_SUCCESS

}

rabbit_stop() {

    local rc

    if ! rabbit_status; then

        ocf_log info "Resource not running."

        return $OCF_SUCCESS

    fi

    $RABBITMQ_CTL stop

    rc=$?

    if [ "$rc" != 0 ]; then

        ocf_log err "rabbitmq-server stop command failed: $RABBITMQ_CTL stop, $rc"

        return $rc

    fi

    # Spin waiting for the server to shut down.

    # Let the CRM/LRM time us out if required

    stop_wait=1

    while [ $stop_wait = 1 ]; do

        rabbit_status

        rc=$?

        if [ "$rc" = $OCF_NOT_RUNNING ]; then

            remove_pid

            stop_wait=0

            break

        elif [ "$rc" != $OCF_SUCCESS ]; then

            ocf_log info "rabbitmq-server stop failed: $rc"

            exit $OCF_ERR_GENERIC

        fi

        sleep 1

    done

    return $OCF_SUCCESS

}

rabbit_monitor() {

    rabbit_status

    return $?

}

case $__OCF_ACTION in

    meta-data)

        meta_data

        exit $OCF_SUCCESS

        ;;

    usage|help)

        rabbit_usage

        exit $OCF_SUCCESS

        ;;

esac

if ocf_is_probe; then

    rabbit_validate_partial

else

    rabbit_validate_full

fi

case $__OCF_ACTION in

    start)

        rabbit_start

        ;;

    stop)

        rabbit_stop

        ;;

    status|monitor)

        rabbit_monitor

        ;;

    validate-all)

        exit $OCF_SUCCESS

        ;;

    *)

        rabbit_usage

        exit $OCF_ERR_UNIMPLEMENTED

        ;;

esac

exit $?