Verbessere die Fehlerbehandlung und Verbindungslogik in BambuVirtualPrinter mit erweiterten Rückoff-Strategien und Anpassungen für die Kamerafunktionalität.

__init__.py

@@ -0,0 +1,28 @@
+def get_settings_defaults(self):
+    return {
+        # ...existing code...
+        
+        # Add option to disable camera functionality
+        "disable_camera": False,
+        
+        # ...existing code...
+    }
+
+# ...existing code...
+
+def get_template_configs(self):
+    return [
+        {
+            "type": "settings",
+            "custom_bindings": False,
+            "template": "bambu_printer_settings.jinja2",
+        },
+        {
+            "type": "tab",
+            "name": "Bambu Printer",
+            "custom_bindings": True,
+            "template": "bambu_printer_tab.jinja2",
+        },
+    ]
+
+# ...existing code...

octoprint_bambu_printer/printer/bambu_virtual_printer.py

@@ -335,6 +335,16 @@ class BambuVirtualPrinter:
         self._mqtt_connected = False
         self._bambu_client = None
         self._custom_connected = False
+        
+        # Store initial connection errors to avoid logging the same errors repeatedly
+        self._connection_error_logged = False
+        self._camera_error_logged = False
+        self._last_connection_attempt = 0
+        self._connection_retry_backoff = 10  # Start with 10 seconds between retries
+        
+        # Track if we should disable camera functionality due to persistent errors
+        self._disable_camera = self._settings.get_boolean(["disable_camera"]) or False
+        
         self._bambu_client: BambuClient = self._create_client_connection_async()
 
     @property
@@ -458,6 +468,12 @@ class BambuVirtualPrinter:
             client.subscribe(device_topic)
             self._log.debug(f"Subscribed to topic: {device_topic}")
             self._log.info(f"MQTT connection successful. Connected: {self.is_connected}")
+            
+            # Try to patch client for better error handling after successful connection
+            try:
+                self._patch_bambu_client_for_connection_errors()
+            except Exception as e:
+                self._log.warning(f"Failed to patch BambuClient for better error handling: {str(e)}")
         else:
             self._mqtt_connected = False
             self._custom_connected = False
@@ -871,21 +887,43 @@ class BambuVirtualPrinter:
             self._log.debug(
                 f"Creating standard BambuClient with local_mqtt: {self._settings.get_boolean(['local_mqtt'])}"
             )
-            bambu_client = BambuClient(
-                device_type=self._settings.get(["device_type"]),
-                serial=self._settings.get(["serial"]),
-                host=self._settings.get(["host"]),
-                username=(
+            
+            # Set up client parameters
+            client_params = {
+                "device_type": self._settings.get(["device_type"]),
+                "serial": self._settings.get(["serial"]),
+                "host": self._settings.get(["host"]),
+                "username": (
                     "bblp"
                     if self._settings.get_boolean(["local_mqtt"])
                     else self._settings.get(["username"])
                 ),
-                access_code=self._settings.get(["access_code"]),
-                local_mqtt=self._settings.get_boolean(["local_mqtt"]),
-                region=self._settings.get(["region"]),
-                email=self._settings.get(["email"]),
-                auth_token=self._settings.get(["auth_token"]),
-            )
+                "access_code": self._settings.get(["access_code"]),
+                "local_mqtt": self._settings.get_boolean(["local_mqtt"]),
+                "region": self._settings.get(["region"]),
+                "email": self._settings.get(["email"]),
+                "auth_token": self._settings.get(["auth_token"]),
+            }
+            
+            # Add disable_camera parameter if it's enabled in settings
+            if self._disable_camera:
+                self._log.info("Camera functionality is disabled in settings")
+                client_params["disable_camera"] = True
+                client_params["enable_camera_stream"] = False
+            
+            try:
+                bambu_client = BambuClient(**client_params)
+            except TypeError as e:
+                # Handle the case where pybambu doesn't support these parameters yet
+                if "disable_camera" in str(e) or "enable_camera_stream" in str(e):
+                    self._log.warning("This version of pybambu doesn't support camera disabling parameters, trying without them")
+                    if "disable_camera" in client_params:
+                        del client_params["disable_camera"]
+                    if "enable_camera_stream" in client_params:
+                        del client_params["enable_camera_stream"]
+                    bambu_client = BambuClient(**client_params)
+                else:
+                    raise
         
         bambu_client.on_disconnect = self.on_disconnect(bambu_client.on_disconnect)
         bambu_client.on_connect = self.on_connect(bambu_client.on_connect)
@@ -898,6 +936,15 @@ class BambuVirtualPrinter:
         while connection_attempts < max_attempts:
             try:
                 self._log.info(f"Connection attempt {connection_attempts + 1}/{max_attempts}...")
+                
+                # Check if we need to wait based on backoff
+                current_time = time.time()
+                if current_time - self._last_connection_attempt < self._connection_retry_backoff:
+                    wait_time = self._connection_retry_backoff - (current_time - self._last_connection_attempt)
+                    self._log.debug(f"Waiting {wait_time:.1f}s before retry due to backoff")
+                    time.sleep(wait_time)
+                
+                self._last_connection_attempt = time.time()
                 bambu_client.connect(callback=self.new_update)
                 
                 # Wait a moment to verify connection
@@ -905,14 +952,27 @@ class BambuVirtualPrinter:
                 
                 if bambu_client.connected:
                     self._log.info(f"Bambu connection successful: {bambu_client.connected}")
+                    # Reset connection error flags on successful connection
+                    self._connection_error_logged = False
+                    self._connection_retry_backoff = 10  # Reset backoff on success
                     break
                 
                 self._log.warning("Connection attempt failed, retrying...")
                 connection_attempts += 1
+                # Increase backoff time for future connection attempts
+                self._connection_retry_backoff = min(300, self._connection_retry_backoff * 2)  # Cap at 5 minutes
                 time.sleep(retry_delay)
             except Exception as e:
-                self._log.error(f"Error during connection attempt {connection_attempts + 1}: {str(e)}", exc_info=True)
+                if not self._connection_error_logged:
+                    self._log.error(f"Error during connection attempt {connection_attempts + 1}: {str(e)}", exc_info=True)
+                    self._connection_error_logged = True
+                else:
+                    self._log.debug(f"Repeated connection error during attempt {connection_attempts + 1}: {str(e)}")
+                    
                 connection_attempts += 1
+                # Increase backoff time for future connection attempts
+                self._connection_retry_backoff = min(300, self._connection_retry_backoff * 2)
+                
                 if connection_attempts < max_attempts:
                     time.sleep(retry_delay)
         
@@ -922,6 +982,40 @@ class BambuVirtualPrinter:
         self._log.info(f"Custom connection status: {self.is_connected}")
         self.sendOk()
 
+    def _patch_bambu_client_for_connection_errors(self):
+        """Patch the BambuClient instance to handle connection errors gracefully"""
+        if not self._bambu_client:
+            return
+        
+        # If we need to modify how the library handles connection errors, particularly
+        # for the Chamber Image functionality, we can patch the relevant methods here
+        
+        # Check if the client has chamber image functionality and it's causing errors
+        if hasattr(self._bambu_client, '_chamber_image_thread') and self._bambu_client._chamber_image_thread:
+            original_run = None
+            
+            # Find the run function in the thread class
+            if hasattr(self._bambu_client._chamber_image_thread, 'run'):
+                original_run = self._bambu_client._chamber_image_thread.run
+                
+                # Create a wrapper that catches connection errors
+                def patched_run(*args, **kwargs):
+                    try:
+                        return original_run(*args, **kwargs)
+                    except ConnectionRefusedError as e:
+                        # Only log first occurrence to avoid log spam
+                        if not self._camera_error_logged:
+                            self._log.warning(f"Chamber image connection refused: {str(e)}. Further errors will be suppressed.")
+                            self._camera_error_logged = True
+                        return None
+                    except Exception as e:
+                        self._log.error(f"Chamber image error: {str(e)}", exc_info=True)
+                        return None
+                
+                # Apply the patched method
+                self._bambu_client._chamber_image_thread.run = patched_run
+                self._log.debug("Patched chamber image thread to handle connection errors")
+
     def publish_mqtt(self, topic, payload):
         """Publish a message to the MQTT broker"""
         if self._mqtt_client and self._mqtt_connected:

templates/bambu_printer_settings.jinja2

@@ -0,0 +1,17 @@
+<div class="control-group">
+    <label class="control-label">{{ _('Connection Options') }}</label>
+    <div class="controls">
+        <label class="checkbox">
+            <input type="checkbox" data-bind="checked: settings.plugins.bambu_printer.use_mqtt_bridge"> {{ _('Use MQTT Bridge') }}
+            <span class="help-block">
+                {{ _('Connect via a MQTT broker that bridges communications from the printer. Useful for connecting to a printer on a different network.') }}
+            </span>
+        </label>
+        <label class="checkbox">
+            <input type="checkbox" data-bind="checked: settings.plugins.bambu_printer.disable_camera"> {{ _('Disable Camera Functionality') }}
+            <span class="help-block">
+                {{ _('Disable camera streaming and image capture to avoid connection errors. Enable this if you see frequent connection refused errors in the logs.') }}
+            </span>
+        </label>
+    </div>
+</div>