#!/bin/sh
#
#
#	NeutronAgentMon OCF RA.
#	Starts crm_mon in background which logs cluster status as
#	html to the specified file.
#
#       Copyright 2014 Canonical Ltd.
#
#       Authors: Hui Xiang <hui.xiang@canonical.com>
#                Edward Hope-Morley <edward.hope-morley@canonical.com>
#
# OCF instance parameters:
#	OCF_RESKEY_file

#######################################################################
# Initialization:
: ${OCF_FUNCTIONS=${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs}
. ${OCF_FUNCTIONS}
: ${__OCF_ACTION=$1}

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

meta_data() {
	cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="NeutronAgentMon">
<version>1.0</version>

<longdesc lang="en">
This is a NeutronAgentMon Resource Agent.
It monitors the 'neutron-ha-monitor daemon' status.
</longdesc>
<shortdesc lang="en">Monitor '/usr/local/bin/neutron-ha-monitor.py' in the background.</shortdesc>

<parameters>

<parameter name="file" unique="0">
<longdesc lang="en">
The file we want to run as a daemon.
</longdesc>
<shortdesc lang="en">The file we want to run as a daemon.</shortdesc>
<content type="string" default="/usr/local/bin/neutron-ha-monitor.py" />
</parameter>

</parameters>

<actions>
<action name="start"   timeout="20" />
<action name="stop"    timeout="20" />
<action name="monitor" depth="0"  timeout="20" interval="60" />
<action name="meta-data"  timeout="5" />
<action name="validate-all"  timeout="30" />
</actions>
</resource-agent>
END
}

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

NeutronAgentMon_usage() {
	cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}

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

NeutronAgentMon_exit() {
    if [ $1 != 0 ]; then
        exit $OCF_ERR_GENERIC
    else
        exit $OCF_SUCCESS
    fi
}

NeutronAgentMon_start() {
    pid=`sudo ps -aux | grep neutron-ha-m\[o\]nitor.py | awk -F' ' '{print $2}'`
    if [ -z $pid ]; then
        ocf_log info "[NeutronAgentMon_start] Start Monitor daemon."
        sudo mkdir -p /var/log/neutron-ha
        sudo python /usr/local/bin/neutron-ha-monitor.py \
        --config-file /var/lib/juju-neutron-ha/neutron-ha-monitor.conf \
        --log-file /var/log/neutron-ha/monitor.log >> /dev/null 2>&1 & echo $!
        sleep 5
    else
        ocf_log warn "[NeutronAgentMon_start] Monitor daemon already running."
    fi
    NeutronAgentMon_exit $?
}

NeutronAgentMon_stop() {
    pid=`sudo ps -aux | grep neutron-ha-m\[o\]nitor.py | awk -F' ' '{print $2}'`
    if [ ! -z $pid ]; then
        sudo kill -s 9 $pid
        ocf_log info "[NeutronAgentMon_stop] Pid $pid is killed."
    else
        ocf_log warn "[NeutronAgentMon_stop] Monitor daemon already stopped."
    fi
    NeutronAgentMon_exit 0
}

NeutronAgentMon_monitor() {
    pid=`sudo ps -aux | grep neutron-ha-m\[o\]nitor.py | awk -F' ' '{print $2}'`
    if [ ! -z $pid ]; then
        ocf_log info "[NeutronAgentMon_monitor] success."
        exit $OCF_SUCCESS
    fi
    exit $OCF_NOT_RUNNING
}

NeutronAgentMon_validate() {
# Existence of the user
    if [ -f $OCF_RESKEY_file ]; then
        echo "Validate OK"
        return $OCF_SUCCESS
    else
        ocf_log err "The file $OCF_RESKEY_file does not exist!"
	exit $OCF_ERR_ARGS
    fi
}

if [ $# -ne 1 ]; then
    NeutronAgentMon_usage
    exit $OCF_ERR_ARGS
fi

: ${OCF_RESKEY_update:="15000"}
: ${OCF_RESKEY_pidfile:="/tmp/NeutronAgentMon_${OCF_RESOURCE_INSTANCE}.pid"}
: ${OCF_RESKEY_htmlfile:="/tmp/NeutronAgentMon_${OCF_RESOURCE_INSTANCE}.html"}

OCF_RESKEY_update=`expr $OCF_RESKEY_update / 1000`

case $__OCF_ACTION in
meta-data)	meta_data
		exit $OCF_SUCCESS
		;;
start)		NeutronAgentMon_start
		;;
stop)		NeutronAgentMon_stop
		;;
monitor)	NeutronAgentMon_monitor
		;;
validate-all)	NeutronAgentMon_validate
		;;
usage|help)	NeutronAgentMon_usage
		exit $OCF_SUCCESS
		;;
*)		NeutronAgentMon_usage
		exit $OCF_ERR_UNIMPLEMENTED
		;;
esac

exit $?