PVFS2-notify

#!/bin/sh
#
# Resource script for PVFS2_notify
#
# Provides a generic hook for sending notifications if a PVFS2 resource is
# failed over to another node.
#
# Based on MailTo script by Alan Robertson <alanr@unix.sh>
#
# Description: Logs a message whenever a resource group starts or stops.
#
#	  OCF parameters are as below:
#               OCF_RESKEY_conf_dir
#               OCF_RESKEY_title
#               OCF_RESKEY_firsthost
#
# License:  GNU General Public License (GPL)

VARRUN=/var/run
MAILTOFILE=$VARRUN/PVFS2_notify
#######################################################################
# Initialization:

# newer versions of heartbeat have moved the ocf-shellfuncs  file
if [ -f /usr/lib/ocf/resource.d/heartbeat/.ocf-shellfuncs ] ; then
. /usr/lib/ocf/resource.d/heartbeat/.ocf-shellfuncs
else
. /usr/lib/heartbeat/ocf-shellfuncs
fi

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

ARGS="$0 $*"

us=`uname -n`

usage() {
  echo "Usage: $0 {start|stop|status|monitor|meta-data|validate-all}"
}

meta_data() {
	cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="PVFS2_notify">
<version>1.0</version>

<longdesc lang="en">
This is a resource agent for PVFS2_notify. It logs or performs notification when a takeover occurs.
</longdesc>
<shortdesc lang="en">PVFS2_notify resource agent</shortdesc>

<parameters>
<parameter name="firsthost" unique="0">
<longdesc lang="en">
Original host for this resource
</longdesc>
<shortdesc lang="en">Original host for this resource</shortdesc>
<content type="string" default="" />
</parameter>

<parameter name="title" unique="0">
<longdesc lang="en">
Title/identifier for the notification.
</longdesc>
<shortdesc lang="en">Subject</shortdesc>
<content type="string" default="" />
</parameter>

<parameter name="conf_dir" unique="0">
<longdesc lang="en">
Configuration directory for file system (PVFS2)
</longdesc>
<shortdesc lang="en">Configuration Directory</shortdesc>
<content type="string" default="" />
</parameter>

<parameter name="fsname" unique="0">
<longdesc lang="en">
Name of file system (PVFS2)
</longdesc>
<shortdesc lang="en">Name of file system</shortdesc>
<content type="string" default="" />
</parameter>

</parameters>

<actions>
<action name="start" timeout="10" />
<action name="stop" timeout="10" />
<action name="status" depth="0" timeout="10" interval="10" start-delay="10" />
<action name="monitor" depth="0" timeout="10" interval="10" start-delay="10" />
<action name="meta-data" timeout="5" />
<action name="validate-all" timeout="5" />
</actions>
</resource-agent>
END
}

MailProgram() {
	mail -s "$1" "$email"  <<EOF
        $Subject
 
        Command line was:
        $ARGS
EOF
	return $?
}

SubjectLine() {
  case $1 in
    ??*)	echo $1;;
    *)		echo "Resource Group";;
  esac
}


PVFS2_notifyStart() {
	if [ -f ${conf_dir}/pvfs2-notify-quiet.flag ]
	then
		rm ${conf_dir}/pvfs2-notify-quiet.flag
		touch $MAILTOFILE
		return 0
	fi

	if [ "$us" == "$firsthost" ]
	then 
		Subject="`SubjectLine $title` starting at `date` on its normal compute element $us"
	else
		Subject="`SubjectLine $title` starting at `date` on failover compute element $us (resource normally runs on $firsthost)"
		`/usr/bin/fs-instance-alarm.pl --fs-name $fsname --ce $firsthost --type PVFS2_HA --msg "$title from $firsthost is starting on failover ce $us"`
	fi

	#MailProgram "$Subject" $1
	logger -t PVFS2 "$Subject"
	
	touch $MAILTOFILE
	return $?
}

PVFS2_notifyStop () {
	if [ -f ${conf_dir}/pvfs2-notify-quiet.flag ]
	then
		rm ${conf_dir}/pvfs2-notify-quiet.flag
		rm -f $MAILTOFILE
		return 0
	fi

	Subject="`SubjectLine $title` stopping at `date` on $us"

	#MailProgram "$Subject" $1
	logger -t PVFS2 "$Subject"
	rm -f $MAILTOFILE
	return $?
}

PVFS2_notifyStatus () {
	ocf_log warn "Don't stat/monitor me! PVFS2_notify is a pseudo resource agent, so the status reported may be incorrect"

	if [ -f $MAILTOFILE ]; then
		echo "running"
		return $OCF_SUCCESS
	else
		echo "stopped"
		return $OCF_NOT_RUNNING
	fi
}

PVFS2_notifyValidateAll () {

# $email may be a list of mail addresses separated by "," and " " and "\t"
# normalize it for ease of parse
#	local local_email=`echo $email | tr ",\t" " " | tr -s " "`

#	ocf_log info "[$local_email]"
#	for item in "$local_email"
#	do
#	    case $item in
#		*?@?*)
#		;; #possible valid email address
#		*)
#		getent passwd $item >/dev/null
#		if [ $? -eq 0 ]; then
#		: OK, mail to $item@localhost.localdomain
#		else
#		    ocf_log err "Invalid email address [$email]"
#		    exit $OCF_ERR_ARGS
#		fi
#		;;
#	    esac
#	done

# Any title is OK

	return $OCF_SUCCESS
}

# 
# See how we were called.
#
#	The order in which heartbeat provides arguments to resource
#	scripts is broken.  It should be fixed.
#

if
  ( [ $# -ne 1 ] )
then
  usage
  exit $OCF_ERR_GENERIC
fi

case $1 in
  meta-data)		meta_data
			exit $OCF_SUCCESS
			;;
	#	Not quite sure what to do with this one...
	#	We aren't a continuously running service - so it's not clear
	#
  status|monitor)	PVFS2_notifyStatus
			exit $?
			;;
  usage)		usage
			exit $OCF_SUCCESS
			;;
  *)			;;
esac

if 
  [ -z "$OCF_RESKEY_conf_dir" ]
then
  ocf_log err "PVFS2-notify must specify conf_dir!"
#  usage
  exit $OCF_ERR_GENERIC
fi

if 
  [ -z "$OCF_RESKEY_fsname" ]
then
  ocf_log err "PVFS2-notify must specify fsname!"
#  usage
  exit $OCF_ERR_GENERIC
fi

conf_dir=$OCF_RESKEY_conf_dir
fsname=$OCF_RESKEY_fsname
title=$OCF_RESKEY_title
firsthost=$OCF_RESKEY_firsthost

case $1 in
  start)		PVFS2_notifyStart
			;;
  stop)			PVFS2_notifyStop
			;;
  validate-all)		PVFS2_notifyValidateAll
			;;
  *)			usage
			exit $OCF_ERR_UNIMPLEMENTED
			;;
esac
exit $?