Draft: Ingestion of SVOM ECLAIRS notices into LLAI workflow

This MR will ingest SVOM GRBs alerts detected by ECLAIRS instrument.

gwcelery/tasks/external_triggers.py

@@ -734,14 +734,14 @@ def _kafka_to_voevent(alert):
     -------
     payload : str
         XML GCN notice alert packet in string format
-
+     payload, pipeline, time, trig_id
     """
     # Define basic values
     pipeline = alert['mission']
     start_time = alert['trigger_time']
     alert_time = alert['alert_datetime']
-    far = alert['far']
-    snr = alert['rate_snr']
+    far = alert.get('far')
+    snr = alert.get('rate_snr') # change this to make optional
     duration = alert['rate_duration']
     id = '_'.join(str(x) for x in alert['id'])
     # Use central time since starting time is not well measured
@@ -771,0+771,0 @@
         fname = f'{pipeline.lower()}_subgrbtargeted_template.xml'
         ivorn_suffix = 'targeted_subthreshold'
     else:
-        fname = 'svom_grb_template.xml'
+        fname = 'svom_grb_template.xml' #change the saved filename
         ivorn_suffix = 'grb'
 
     # Construct the full path to the template
@@ -792,7 +792,8 @@ def _kafka_to_voevent(alert):
     if pipeline.lower() in ['fermi', 'swift']:
         root.find("./What/Param[@name='TrigID']").attrib['value'] = str(id)
     else:
-        root.find("./What/Param[@name='Burst_Id']").attrib['value'] = str(id)
+        root.find("./What/Group[@name='Svom_Identifiers']"
+                  "/Param[@name='Burst_Id']").attrib['value'] = str(id)
 
     # Change times to chosen time
     root.find("./Who/Date").text = str(alert_time).encode()
@@ -812,7 +813,7 @@ def _kafka_to_voevent(alert):
         root.find("./What/Param[@name='Integ_Time']").attrib['value'] = \
             str(duration).encode()
     else:
-        root.find("./Group[@name='Svom_Identifiers']"
+        root.find("./Group[@name='Svom_Identifiers']"            # fix this
                   "/Param[@name='Timescale']").attrib['value'] = \
             (str(duration).encode())