#!/bin/bash

# configure shutdown priority here
# nfs-client and nfs-export are special cases
# it is assumed that nfs-client1 will run on nodeid1 and nfs-client2 on nodeid2

shutdownpriority="GENPKG5 GENPKG4 GENPKG3 GENPKG2 GENPKG1"

# determine this node data

thisnodeid="$(cman_tool status |grep "Node ID:" | awk '{print $3}')"
thisnodename="$(cman_tool status |grep "Node name:" | awk '{print $3}')"

# cache clustat output
cluout="$(clustat)"

# look for the other node data
othernodename="$(cman_tool nodes -F id,name | grep -v "$thisnodeid "| awk '{print $2}')"

# it is not enough to know if the node is running via cman,
# we need to know if rgmanager is running or not and that's
# what really matters to us

if echo "$cluout" | grep $othernodename |grep -v "service:" | grep -q "RG-"; then
	othernodestatus="on"
else
	othernodestatus="off"
fi

# workaround some shell expansion issues
if [ "$thisnodeid" = "1" ]; then
	nfsclient=nfs-client1
else
	nfsclient=nfs-client2
fi

if [ "$othernodestatus" = "on" ]; then

	# shutdown by priority but do not touch nfs-client. it has to
	# be the last to go, or it will be restarted on nfs-export relocation

	for i in $shutdownpriority nfs-export; do
		# for safety, we can only relocate services that in started state
		if echo "$cluout" | grep $i | grep $thisnodename | grep -q started; then
			clusvcadm -r $i -m $othernodename
		fi
	done

	# if both nodes are up, don't stop nfs-client, let rgmanager do that
	# this covers a corner case in service handling that central_processing
	# introduces by re-evaluting all service statuses each time a service
	# starts/stop.
	## clusvcadm -s $nfsclient

else
	# If the other node is not running rgmanager, we can safely
	# shutdown everything in order.
	# In this case nfs-client must be stopped before nfs-export
	# since nfs-export is going away forever.

	for i in $shutdownpriority $nfsclient nfs-export; do
		if echo "$cluout" | grep $i | grep -q started; then
			echo Stopping $i running on node $thisnodeid
			clusvcadm -s $i
		fi
	done
fi