JFJOCH: added retry to get_diffraction_image with wait_between_retries_s default of 0.1 s

src/aare/devices/jfjoch.py

@@ -1,4 +1,5 @@
 import math
+import time
 
 import jfjoch_client
 
@@ -190,5 +191,12 @@ class JFJochWrapper:
 
         return l.detectors[l.current_id]
 
-    def get_diffraction_image(self, image_id: int):
-        return self.__api.image_buffer_image_jpeg_get(id=image_id, show_spots=False)
+    def get_diffraction_image(self, image_id: int, wait_between_retries_s: float = 0.1):
+        last_error = None
+        for _ in range(3):
+            try:
+                return self.__api.image_buffer_image_jpeg_get(id=image_id, show_spots=False)
+            except Exception as e:
+                last_error = e
+                time.sleep(wait_between_retries_s)
+        raise last_error