Fix last(?) leak in syncer

Signed-off-by: nolash <dev@holbrook.no>

apps/cic-eth/cic_eth/sync/backend.py

@@ -28,20 +28,25 @@ class SyncerBackend:
     def connect(self):
         """Loads the state of the syncer session with the given id.
         """
-        self.db_session = SessionBase.create_session()
+        if self.db_session == None:
+            self.db_session = SessionBase.create_session()
         q = self.db_session.query(BlockchainSync)
         q = q.filter(BlockchainSync.id==self.object_id)
         self.db_object = q.first()
         if self.db_object == None:
+            self.disconnect()
             raise ValueError('sync entry with id {} not found'.format(self.object_id))
+        return self.db_session
 
 
     def disconnect(self):
         """Commits state of sync to backend.
         """
-        self.db_session.add(self.db_object)
-        self.db_session.commit()
-        self.db_session.close()
+        if self.db_session != None:
+            self.db_session.add(self.db_object)
+            self.db_session.commit()
+            self.db_session.close()
+            self.db_session = None
        
 
     def chain(self):

apps/cic-eth/cic_eth/sync/mined.py

@@ -56,7 +56,8 @@ class MinedSyncer(Syncer):
             # TODO: ensure filter loop can complete on graceful shutdown
             for f in self.filter:
                 #try:
-                task_uuid = f(w3, tx, rcpt, self.chain())
+                session = self.bc_cache.connect()
+                task_uuid = f(w3, tx, rcpt, self.chain(), session)
                 #except Exception as e:
                 #    logg.error('error in filter {} tx {}: {}'.format(f, tx_hash_hex, e))
                 #    continue