Allows for a signal's raw uuid to be our raw id (Netflix#3314)

* Allows for a signal's raw uuid to be our raw id

* Adding externalID

Author: kevgliss

src/dispatch/signal/service.py

@@ -450,6 +450,11 @@ def create_instance(
         signal=signal,
     )
 
+    # if the signal has an existing uuid we propgate it as our primary key
+    if signal_instance_in.raw:
+        if signal_instance_in.raw.get("id"):
+            signal_instance.id = signal_instance_in.raw["id"]
+
     if signal_instance_in.case_priority:
         case_priority = case_priority_service.get_by_name_or_default(
             db_session=db_session,

src/dispatch/signal/views.py

@@ -68,7 +68,7 @@ def create_signal_instance(
     )
 
     if not signal_instance_in.signal:
-        external_id = signal_instance_in.raw["id"]
+        external_id = signal_instance_in.raw["externalId"]
         variant = signal_instance_in.raw["variant"]
 
         signal = signal_service.get_by_variant_or_external_id(