feat: Add support for configurable procimg path

Introduced a new `--procimg` argument to specify the process image path.
Updated `MiddlewareDaemon` to dynamically reset D-Bus when `procimg`
changes and pass the configured path to bus providers.

Signed-off-by: Sven Sager <s.sager@kunbus.com>

src/revpi_middleware/daemon.py

@@ -46,6 +46,9 @@ class MiddlewareDaemon:
         log.debug("enter MiddlewareDaemon._configure")
         pi.reload_conf()
 
+        if pi.pargs.procimg != self.wd_reset.procimg:
+            self.dbus_stop()
+
         log.debug("leave MiddlewareDaemon._configure")
 
     @staticmethod
@@ -65,9 +68,15 @@ class MiddlewareDaemon:
         dbus_running = self.bus_provider and self.bus_provider.is_alive()
         if not dbus_running:
             if self.bus_provider_selected is BusProvider.middleware:
-                self.bus_provider = BusProviderMiddleware1(self._get_bus_address())
+                self.bus_provider = BusProviderMiddleware1(
+                    dbus_address=self._get_bus_address(),
+                    picontrol_device=pi.pargs.procimg,
+                )
             elif self.bus_provider_selected is BusProvider.ios:
-                self.bus_provider = BusProviderIos1(self._get_bus_address())
+                self.bus_provider = BusProviderIos1(
+                    dbus_address=self._get_bus_address(),
+                    picontrol_device=pi.pargs.procimg,
+                )
             else:
                 raise ValueError("Unknown bus provider")
             self.bus_provider.start()

src/revpi_middleware/main_application.py

@@ -27,6 +27,12 @@ pi.parser.add_argument(
     default="/etc/{0}/{0}.conf".format(pi.programname),
     help="application configuration file",
 )
+pi.parser.add_argument(
+    "--procimg",
+    dest="procimg",
+    default="/dev/piControl0",
+    help="Path to process image",
+)
 pi.parser.add_argument(
     "bus_provider",
     default="middleware",