feat(fofb-opcua): Add wait for server ready

* Use the lock file to store status
* While server is starting, the status will be "starting"
* After proper start, apply a FPGA reset and local config

recipes-app/fofb-opcua-server/files/fofb-opcua-server.sh

@@ -3,12 +3,12 @@
 . /etc/init.d/functions
 
 LOG_FILE=/var/log/fofb-opcua-server.log
-LOCK_FILE=/var/lock/subsys/fofb-opcua-server.log
+LOCK_FILE=/var/lock/subsys/fofb-opcua-server
 
 # Start the service
 start() {
     if [ -f $LOCK_FILE ]; then
-        echo "fofb-opcua server already running"
+        echo "fofb-opcua server already running, status: $(cat $LOCK_FILE)"
         exit 1
     fi
 
@@ -20,15 +20,19 @@ start() {
     ln -sf /opt/fofb/map/appuio.dmap devices.dmap
 
     # Start server
+    echo "starting" > $LOCK_FILE
     stdbuf -oL opcua-generic-chimeratk-server01 &>> $LOG_FILE &
 
+    # Wait for server started
+    (tail -F -n0 $LOG_FILE & ) | grep -q "All application modules are running"
+
     # Reset the FPGA
     echo "Reset FPGA and reconfigure" >> $LOG_FILE
     /etc/init.d/fw_plreset.sh >> $LOG_FILE
     fofb-configurator --config /opt/fofb/cfg/config_register --dmap /opt/fofb/opcua-server/devices.dmap >> $LOG_FILE
 
     ### Create the lock file ###
-    touch $LOCK_FILE
+    echo "started" > $LOCK_FILE
     success $"fofb-opcua server startup"
 }
 
@@ -41,6 +45,15 @@ stop() {
     rm -f $LOCK_FILE
 }
 
+status() {
+    if [ -f $LOCK_FILE ]; then
+        echo "fofb-opcua server status: $(cat $LOCK_FILE)"
+    else
+        echo "fofb-opcua server status: stopped"
+    fi
+}
+
+
 ### main logic ###
 case "$1" in
     start)
@@ -50,7 +63,7 @@ case "$1" in
         stop
         ;;
     status)
-        status opcua-generic-chimeratk-server01
+        status
         ;;
     restart|reload|condrestart)
         stop