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#!/bin/sh
#
# Resource script for MailTo
#
# Author: Alan Robertson <alanr@unix.sh>
#
# Description: sends email to a sysadmin whenever a takeover occurs.
#
# Note: This command requires an argument, unlike normal init scripts.
#
# This can be given in the haresources file as:
#
# You can also give a mail subject line or even multiple addresses
# MailTo::alanr@unix.sh::BigImportantWebServer
# MailTo::alanr@unix.sh,spoppi@gmx.de::BigImportantWebServer
#
# This will then be put into the message subject and body.
#
# OCF parameters are as below:
# OCF_RESKEY_email
# OCF_RESKEY_subject
#
# License: GNU General Public License (GPL)
#
# Copyright: (C) 2005 International Business Machines
#######################################################################
# Initialization:
. ${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs
#######################################################################
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="MailTo">
<version>1.0</version>
<longdesc lang="en">
This is a resource agent for MailTo. It sends email to a sysadmin whenever
a takeover occurs.
</longdesc>
<shortdesc lang="en">MailTo resource agent</shortdesc>
<parameters>
<parameter name="email" unique="0" required="1">
<longdesc lang="en">
The email address of sysadmin.
</longdesc>
<shortdesc lang="en">Email address</shortdesc>
<content type="string" default="" />
</parameter>
<parameter name="subject" unique="0">
<longdesc lang="en">
The subject of the email.
</longdesc>
<shortdesc lang="en">Subject</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() {
$MAILCMD -s "$1" "$email" <<EOF
$Subject
Command line was:
$ARGS
EOF
return $?
}
SubjectLine() {
case $1 in
??*) echo $1;;
*) echo "Resource Group";;
esac
}
MailToStart() {
Subject="`SubjectLine $subject` Takeover in progress at `date` on $us"
MailProgram "$Subject" $1
ha_pseudo_resource MailTo_${OCF_RESOURCE_INSTANCE} start
}
MailToStop () {
Subject="`SubjectLine $subject` Migrating resource away at `date` from $us"
MailProgram "$Subject" $1
ha_pseudo_resource MailTo_${OCF_RESOURCE_INSTANCE} stop
}
MailToStatus () {
# ocf_log warn "Don't stat/monitor me! MailTo is a pseudo resource agent, so the status reported may be incorrect"
if ha_pseudo_resource MailTo_${OCF_RESOURCE_INSTANCE} monitor
then
echo "running"
return $OCF_SUCCESS
else
echo "stopped"
return $OCF_NOT_RUNNING
fi
}
MailToValidateAll () {
if [ -z "$MAILCMD" ]; then
ocf_log err "MAILCMD not set: complain to the packager"
exit $OCF_ERR_INSTALLED
fi
check_binary "$MAILCMD"
# $email may be a list of mail addresses separated by "," and " " and "\t"
# normalize it for ease of parse
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 subject 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
;;
status|monitor) MailToStatus
exit $?
;;
usage) usage
exit $OCF_SUCCESS
;;
*) ;;
esac
if
[ -z "$OCF_RESKEY_email" ]
then
ocf_log err "At least 1 Email address has to be given!"
# usage
exit $OCF_ERR_GENERIC
fi
email=$OCF_RESKEY_email
subject=$OCF_RESKEY_subject
MailToValidateAll
case $1 in
start) MailToStart
;;
stop) MailToStop
;;
validate-all) ;;
*) usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
exit $?

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MailTo (4 KB)

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