Handle 2.10.0 not having missingConnections

src/calng/DetectorAssembler.py

@@ -3,6 +3,7 @@ import pickle
 import re
 import threading
 import time
+from pkg_resources import parse_version
 
 import numpy as np
 from karabo.bound import (
@@ -31,6 +32,7 @@ from karabo.bound import (
 )
 from TrainMatcher import TrainMatcher
 
+from karabo import version as karaboVersion
 from . import scenes
 from ._version import version as deviceVersion
 
@@ -205,18 +207,23 @@ class DetectorAssembler(TrainMatcher.TrainMatcher):
             for i in range(max_tries):
                 time.sleep(np.random.random() * 10)
                 if self.geometry is None:
-                    missing_connections = set(
-                        self.get("geometryInput.missingConnections")
+                    geometry_device_list = list(
+                        self.get("geometryInput.connectedOutputChannels")
                     )
-                    # note: connectedOutputChannels not necessarily connected...
-                    geometry_device_list = [
-                        channel
-                        for channel in self.get("geometryInput.connectedOutputChannels")
-                        if channel not in missing_connections
-                    ]
-                    if not geometry_device_list:
-                        self.log.INFO("No geometry device connected")
-                        continue
+                    # first check if geometry device not even connected
+                    if parse_version(karaboVersion) >= parse_version("2.11"):
+                        # missingConnections apparently not a thing on 2.10
+                        missing_connections = set(
+                            self.get("geometryInput.missingConnections")
+                        )
+                        geometry_device_list = [
+                            channel
+                            for channel in geometry_device_list
+                            if channel not in missing_connections
+                        ]
+                        if not geometry_device_list:
+                            self.log.INFO("No geometry device connected")
+                            continue
                     geometry_device = geometry_device_list[0].split(":")[0]
                     self.log.INFO(f"Asking {geometry_device} for a geometry")
                     self.signalSlotable.call(geometry_device, "pleaseSendYourGeometry")