added configurable ramdisk definition to prepare()

system/sbin/kazoo-kamailio

@@ -26,18 +26,41 @@ if test "$DUMP_CORE" = "yes" ; then
 fi
 
 prepare() {
-	mkdir -p /var/run/kamailio
-	chown -R ${USER} /var/run/kamailio
-	if [ -e ${PID_FILE} ]; then
-		rm -rf ${PID_FILE}
-	fi
-	if [ ! -f /etc/kazoo/kamailio/db/kazoo.db ]; then
-		KazooDB -init /etc/kazoo/kamailio/kazoodb.sql
-	fi
-        chown -R ${USER} /etc/kazoo/kamailio/db
-	RETVAL=$?
+    mkdir -p /var/run/kamailio
+    chown -R ${USER} /var/run/kamailio
+    if [ -e ${PID_FILE} ]; then
+        rm -rf ${PID_FILE}
+    fi
+    if ram_disk_enabled; then
+        if ! mount_point_exists; then 
+            if [ -f /etc/kazoo/kamailio/kazoo.db ]; then
+                mv /etc/kazoo/kamailio/db /etc/kazoo/kamailio/db-old
+            fi
+            mount -t tmpfs -o size=256m tmpfs /etc/kazoo/kamailio/db
+            if [ -f /etc/kazoo/kamailio/db-old/kazoo.db ]; then
+                cp -a /etc/kazoo/kamailio/db-old/* /etc/kazoo/kamailio/db/
+            fi
+        fi
+    fi	
+    if [ ! -f /etc/kazoo/kamailio/db/kazoo.db ]; then
+        KazooDB -init /etc/kazoo/kamailio/kazoodb.sql
+    fi
+    chown -R ${USER} /etc/kazoo/kamailio/db
+    RETVAL=$?
+}
+
+ram_disk_enabled() {
+    grep -e "^\s*enable_ram_disk\s*=\s*true" /etc/kazoo/kamailio/local.cfg &> /dev/null
+    return $?
 }
 
+mount_point_exists() {
+   mount | grep /etc/kazoo/kamailio/db &> /dev/null 
+   return $?
+}
+
+
+
 start() {
 	cd ${HOME}