#!/bin/sh
#
#
#	pingd OCF Resource Agent
#	Records (in the CIB) the current number of ping nodes a 
#	   cluster node can connect to.
#
# Copyright (c) 2006 Andrew Beekhof
#                    All Rights Reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# Further, this software is distributed without any warranty that it is
# free of the rightful claim of any third person regarding infringement
# or the like.  Any license provided herein, whether implied or
# otherwise, applies only to this software file.  Patent licenses, if
# any, provided herein do not apply to combinations of this program with
# other software, or any other product whatsoever.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
#
#######################################################################
# Initialization:

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

: ${OCF_RESKEY_name:="pingd"}
: ${OCF_RESKEY_interval:="1"}
: ${OCF_RESKEY_CRM_meta_interval:=0}

upgrade1="This agent (ocf:pacemaker:pingd) has been replaced by the more reliable ocf:pacemaker:ping."
upgrade2="Attempting automated conversion, run 'crm ra info ocf:pacemaker:ping' for all configuration options"
upgrade3="You will need to remove the existing resource and replace it with one that uses 'ocf:pacemaker:ping' directly"

case $__OCF_ACTION in
    start|monitor)
	if [ "x" != "x$OCF_RESKEY_host_list" ]; then
	    ocf_log err "$upgrade1"
	    ocf_log err "$upgrade2"
	    ocf_log err "Automatic conversion to ocf:pacemaker:ping failed: no hosts were configured to check for connectivity"
	    ocf_log err "$upgrade3"
	    exit $OCF_ERR_ARGS
	fi

	recurring=`crm configure show $OCF_RESOURCE_INSTANCE | grep "op monitor.*interval=\"[1-9]" | sed s/.*interval=// | awk -F\" '{print $2}' | sed s/.*interval=// | awk -F\" '{print $2}' | sort | head -n 1`

	if [ -z $recurring ]; then
	    ocf_log err "$upgrade1"
	    ocf_log err "$upgrade2"
	    ocf_log err "Automatic conversion to ocf:pacemaker:ping failed: no monitor operation configured"
	    ocf_log err "Without an explicit monitor operation for '$OCF_RESOURCE_INSTANCE', connectivity changes will not be noticed"
	    ocf_log err "Preventing startup to ensure the issue is addressed before it matters"
	    exit $OCF_ERR_ARGS
	fi
	
	if [ $OCF_RESKEY_CRM_meta_interval = 0 ]; then
	    ocf_log warn "$upgrade1"
	    ocf_log warn "$upgrade2"
	    if [ $recurring != $OCF_RESKEY_interval ]; then
		ocf_log warn "Your monitor operation happens every $recurring, which means that the $OCF_RESKEY_name attribute will be updated with a different frequency than the previously configured ( $OCF_RESKEY_interval )"
		ocf_log warn "Either change the monitor interval to match or, ideally, switch to the ocf:pacemaker:ping agent and avoid all this compatibility nonsense."
	    fi
	fi
	;;
    meta-data)
	cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="pingd">
<version>1.0</version>
<longdesc lang="en">
This agent (ocf:pacemaker:pingd) has been replaced by the more reliable ocf:pacemaker:ping.
It records (in the CIB) the current number of ping nodes (specified in the 'host_list' parameter) a cluster node can connect to.
</longdesc>
<shortdesc lang="en">pingd resource agent</shortdesc>

<parameters>

<parameter name="pidfile" unique="0">
<longdesc lang="en">PID file</longdesc>
<shortdesc lang="en">PID file</shortdesc>
<content type="string" default="$HA_VARRUN/pingd-${OCF_RESOURCE_INSTANCE}" />
</parameter>


<parameter name="user" unique="0">
<longdesc lang="en">
The user we want to run pingd as
</longdesc>
<shortdesc lang="en">The user we want to run pingd as</shortdesc>
<content type="string" default="root" />
</parameter>

<parameter name="dampen" unique="0">
<longdesc lang="en">
The time to wait (dampening) further changes occur
</longdesc>
<shortdesc lang="en">Dampening interval</shortdesc>
<content type="integer" default="5s"/>
</parameter>

<parameter name="set" unique="0">
<longdesc lang="en">
The name of the instance_attributes set to place the value in.  Rarely needs to be specified.
</longdesc>
<shortdesc lang="en">Set name</shortdesc>
<content type="string" default=""/>
</parameter>

<parameter name="name" unique="0">
<longdesc lang="en">
The name of the attributes to set.  This is the name to be used in the constraints.
</longdesc>
<shortdesc lang="en">Attribute name</shortdesc>
<content type="string" default="pingd"/>
</parameter>

<parameter name="section" unique="0">
<longdesc lang="en">
The section place the value in.  Rarely needs to be specified.
</longdesc>
<shortdesc lang="en">Section name</shortdesc>
<content type="string" default=""/>
</parameter>

<parameter name="multiplier" unique="0">
<longdesc lang="en">
The number by which to multiply the number of connected ping nodes by
</longdesc>
<shortdesc lang="en">Value multiplier</shortdesc>
<content type="integer" default=""/>
</parameter>

<parameter name="host_list" unique="0">
<longdesc lang="en">
The list of ping nodes to count.  Defaults to all configured ping nodes.  Rarely needs to be specified.
</longdesc>
<shortdesc lang="en">Host list</shortdesc>
<content type="string" default=""/>
</parameter>

<parameter name="interval" unique="0">
<longdesc lang="en">
How often, in seconds, to check for node liveliness
</longdesc>
<shortdesc lang="en">ping interval in seconds</shortdesc>
<content type="integer" default="1"/>
</parameter>

<parameter name="attempts" unique="0">
<longdesc lang="en">
Number of ping attempts, per host, before declaring it dead
</longdesc>
<shortdesc lang="en">no. of ping attempts</shortdesc>
<content type="integer" default="2"/>
</parameter>

<parameter name="timeout" unique="0">
<longdesc lang="en">
How long, in seconds, to wait before declaring a ping lost
</longdesc>
<shortdesc lang="en">ping timeout in seconds</shortdesc>
<content type="integer" default="2"/>
</parameter>

<parameter name="options" unique="0">
<longdesc lang="en">
A catch all for any other options that need to be passed to pingd.
</longdesc>
<shortdesc lang="en">Extra Options</shortdesc>
<content type="string" default=""/>
</parameter>

</parameters>

<actions>
<action name="start"   timeout="90" />
<action name="stop"    timeout="100" />
<action name="monitor" depth="0"  timeout="20" interval="10" start-delay="1m" />
<action name="meta-data"  timeout="5" />
<action name="validate-all"  timeout="30" />
</actions>
</resource-agent>
END
	exit $OCF_SUCCESS
	;;
esac

${OCF_ROOT}/resource.d/pacemaker/ping $1
exit $?