first try at creating VirtualizationInterface

capsulflask/shell_scripts/destroy.sh

@@ -0,0 +1,48 @@
+#!/bin/sh
+
+three_dots() {
+	printf '.'
+	sleep 0.01
+	printf '.'
+	sleep 0.01
+	printf '.\n'
+}
+
+vmname="$1"
+
+if echo "$vmname" | grep -vqE '^capsul-[a-z0-9]{10}$'; then
+  echo "vmname $vmname must match "'"^capsul-[a-z0-9]{10}$"'
+  exit 1
+fi
+
+echo "deleting $vmname:"
+count=$(ls /tank/vm/$vmname* 2> /dev/null | wc -l)
+if [ "$count" -gt 3 ]; then
+	echo "too many files found, exiting cowardly:"
+	echo "$(ls /tank/vm/$vmname*)"
+	exit 1
+fi
+
+virsh list --name --all | grep -q -E "^$vmname$"
+if [ "$?" -eq 1 ]; then
+	echo "Error: $vmname not found"
+	exit 1
+fi
+
+virsh list --name --state-running | grep -q -E "^$vmname$"
+if [ "$?" -eq 0 ]; then
+	printf '  stopping vm'; three_dots
+	virsh destroy "$vmname" > /dev/null
+fi
+
+printf '  undefining xml.'; three_dots
+if ! [ -f "/tank/vm/$vmname.qcow2" ]; then
+	echo "/tank/vm/$vmname.qcow2 is not a file, exiting cowardly"
+	exit 1
+fi
+
+virsh undefine "$vmname" > /dev/null
+printf '  deleting disks.' ; three_dots
+rm /tank/vm/$vmname*
+
+echo "success"