#!/bin/sh
#
#
#	Dummy OCF RA. Does nothing but wait a few seconds, can be
#	configured to fail occassionally.
#
# Copyright (c) 2004 SUSE LINUX AG, Lars Marowsky-Bree
#                    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:

: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs


	instance=$OCF_RESKEY_instance
	db2home=$(sh -c "echo ~$instance")
    db2sql=$db2home/sqllib
    db2profile=$db2sql/db2profile
	
#######################################################################

meta_data() {
	cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="db2server">
<version>1.0</version>

<longdesc lang="en">
This is a Mummy Resource Agent. It does absolutely nothing except 
keep track of whether its running or not.
Its purpose in life is for testing and to serve as a template for RA writers.

NB: Please pay attention to the timeouts specified in the actions
section below. They should be meaningful for the kind of resource
the agent manages. They should be the minimum advised timeouts,
but they shouldn't/cannot cover _all_ possible resource
instances. So, try to be neither overly generous nor too stingy,
but moderate. The minimum timeouts should never be below 10 seconds.
</longdesc>
<shortdesc lang="en">Example stateless resource agent</shortdesc>

<parameters>
<parameter name="instance" unique="1">
<longdesc lang="en">
DB2 Server Instance.
</longdesc>
<shortdesc lang="en">DB2 Instance</shortdesc>
<content type="string" default="db2inst1" />
</parameter>

</parameters>

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

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

#
# Run the given command as db2 instance user
#
runasdb2() {

    su $instance -c ". $db2profile; $*"
}

#
# check whether `enough´ processes for a healthy instance are up
# 
db2_instance_status() {
    local pscount
	
	pscount=`ps -u db2inst1 --no-headers|grep -i db2sysc|wc -l`
	ocf_log info "pscount value is $pscount already"
    if [ $pscount -eq 1 ]; then
        return $OCF_SUCCESS;
    elif [ $pscount -ge 1 ]; then
        return $OCF_ERR_GENERIC
    fi
    return $OCF_NOT_RUNNING
}


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

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

dummy_start() {

local flag output
    
	dummy_monitor
	flag=$?
	ocf_log info "Resource Start Flag Value : $flag"
	if [ $flag -eq $OCF_SUCCESS ]; then
		ocf_log info "Resource is already Running"
		return $OCF_SUCCESS
	elif [ $flag -eq $OCF_NOT_RUNNING ]; then
		output=$(runasdb2 db2start)
		ocf_log info "Resource is started with### $output"
		return $OCF_SUCCESS
	fi 

	ocf_log info "Resource is Start Completed"
    	return $OCF_ERR_GENERIC
	
}

dummy_stop() {

local output flag
    
	output=`ps -u db2inst1 --no-headers|grep -i db2sysc|wc -l`
	ocf_log info "DB2 instance output value now $output status"

    if [ $output -eq 0 ]; then
        ocf_log info "DB2 instance now $instance already stopped"
        return $OCF_SUCCESS
    fi
	output=$(runasdb2 db2stop)
	ocf_log info "DB2 instance here $instance stopping: $output"
	flag=`echo $output | cut -d " " -f 5-9`
	ocf_log info "DB2 instance flag here $flag stopping: $flag"
	if [ "$flag" = "SQL1064N DB2STOP processing was successful." ];	then
        ocf_log info "DB2 instance $instance stopped: $flag successful"
		return $OCF_SUCCESS
    else
        case $output in
            *)
            ocf_log err "$output"
            return $OCF_ERR_GENERIC
        esac
	fi;

}

dummy_monitor() {
        local output
	
    db2_instance_status
	output=$?
	ocf_log info "Monitor DB2 instance output value: $output"
    	if [ $output -eq $OCF_SUCCESS ]; then
        	# instance is not running
        	return $OCF_SUCCESS;
	elif [ $output -eq $OCF_NOT_RUNNING ]; then
		return $OCF_NOT_RUNNING; 
	fi
	return $OCF_ERR_GENERIC;
}

dummy_validate() {

local db2home db2sql db2instance

    # check required instance vars
    if [ -z "$OCF_RESKEY_instance" ]
    then
        ocf_log err "DB2 required parameter instance is not set!"
        return $OCF_ERR_CONFIGURED
    fi

    instance=$OCF_RESKEY_instance

    db2home=$(sh -c "echo ~$instance")
    db2sql=$db2home/sqllib
    db2profile=$db2sql/db2profile
    db2bin=$db2sql/bin


    #	Let's make sure a few important things are there...
    if ! [ -d "$db2sql" -a  -d "$db2bin" -a -f "$db2profile" -a \
           -x "$db2profile" -a -x "$db2bin/db2" ]
    then
        ocf_is_probe && exit $OCF_NOT_RUNNING
        ocf_log err "DB2 required directories and/or files not found"
        exit $OCF_ERR_INSTALLED
    fi

    db2instance=$(runasdb2 'echo $DB2INSTANCE')
    if [ "$db2instance" != "$instance" ]
    then
        ocf_is_probe && exit $OCF_NOT_RUNNING
        ocf_log err "DB2 parameter instance \"$instance\" != DB2INSTANCE \"$db2instance\""
        exit $OCF_ERR_CONFIGURED
    fi

    # enough checking for stop to succeed
    [ $__OCF_ACTION = stop ] && return $OCF_SUCCESS

    return $OCF_SUCCESS
}

case $__OCF_ACTION in
meta-data)	meta_data
			exit $OCF_SUCCESS
			;;
start)		dummy_start;;
stop)		dummy_stop;;
monitor)	dummy_monitor;;
validate-all)	dummy_validate;;
usage|help)	dummy_usage
		exit $OCF_SUCCESS
		;;
*)		dummy_usage
		exit $OCF_ERR_UNIMPLEMENTED
		;;
esac
rc=$?
exit $rc