fix: use separate thread to sync changes to farmOS

i.e. when creating or editing an asset/log, or submitting quick eggs form

src/wuttafarm/web/views/master.py

@@ -24,6 +24,7 @@ Base class for WuttaFarm master views
 """
 
 import threading
+import time
 
 import requests
 from webhelpers2.html import tags
@@ -110,17 +111,36 @@ class WuttaFarmMasterView(MasterView):
             f.set_readonly("drupal_id")
 
     def persist(self, obj, session=None):
+        session = session or self.Session()
 
         # save per usual
         super().persist(obj, session)
 
         # maybe also sync change to farmOS
         if self.app.is_farmos_mirror():
+            if self.creating:
+                session.flush()  # need the new uuid
             client = get_farmos_client_for_user(self.request)
-            self.auto_sync_to_farmos(client, obj)
+            thread = threading.Thread(
+                target=self.auto_sync_to_farmos, args=(client, obj.uuid)
+            )
+            thread.start()
 
-    def auto_sync_to_farmos(self, client, obj):
-        self.app.auto_sync_to_farmos(obj, client=client, require=False)
+    def auto_sync_to_farmos(self, client, uuid):
+        model = self.app.model
+        model_class = self.get_model_class()
+
+        with self.app.short_session(commit=True) as session:
+            if user := session.query(model.User).filter_by(username="farmos").first():
+                session.info["continuum_user_id"] = user.uuid
+
+            obj = None
+            while not obj:
+                obj = session.get(model_class, uuid)
+                if not obj:
+                    time.sleep(0.1)
+
+            self.app.auto_sync_to_farmos(obj, client=client, require=False)
 
     def get_farmos_entity_type(self):
         if self.farmos_entity_type:

src/wuttafarm/web/views/quick/eggs.py

@@ -24,6 +24,8 @@ Quick Form for "Eggs"
 """
 
 import json
+import threading
+import time
 
 import colander
 from deform.widget import SelectWidget
@@ -331,13 +333,43 @@ class EggsQuickForm(QuickFormView):
         session.flush()
 
         if self.app.is_farmos_mirror():
-            if new_unit:
-                self.app.auto_sync_to_farmos(unit, client=self.farmos_client)
-            self.app.auto_sync_to_farmos(quantity, client=self.farmos_client)
-            self.app.auto_sync_to_farmos(log, client=self.farmos_client)
+            thread = threading.Thread(
+                target=self.auto_sync_to_farmos,
+                args=(log.uuid, quantity.uuid, new_unit.uuid if new_unit else None),
+            )
+            thread.start()
 
         return log
 
+    def auto_sync_to_farmos(self, log_uuid, quantity_uuid, new_unit_uuid):
+        model = self.app.model
+
+        with self.app.short_session(commit=True) as session:
+            if user := session.query(model.User).filter_by(username="farmos").first():
+                session.info["continuum_user_id"] = user.uuid
+
+            if new_unit_uuid:
+                new_unit = None
+                while not new_unit:
+                    new_unit = session.get(model.Unit, new_unit_uuid)
+                    if not new_unit:
+                        time.sleep(0.1)
+                self.app.auto_sync_to_farmos(unit, client=self.farmos_client)
+
+            quantity = None
+            while not quantity:
+                quantity = session.get(model.StandardQuantity, quantity_uuid)
+                if not quantity:
+                    time.sleep(0.1)
+            self.app.auto_sync_to_farmos(quantity, client=self.farmos_client)
+
+            log = None
+            while not log:
+                log = session.get(model.HarvestLog, log_uuid)
+                if not log:
+                    time.sleep(0.1)
+            self.app.auto_sync_to_farmos(log, client=self.farmos_client)
+
     def redirect_after_save(self, log):
         model = self.app.model