Bug fix: SQL alchemy connection problem in Kubernetes (#72)

Author: Joan Reyero

backend/src/serverless/integrations/iterators/baseIterator.ts

@@ -140,7 +140,7 @@ export default abstract class BaseIterator {
         console.log('State: ', this.state)
         console.log('Response length: ', response.records.length)
         console.log('Limit', response.limit)
-        console.log('Last record: ', parseOutput.lastRecord)
+        // console.log('Last record: ', parseOutput.lastRecord)
         console.log('Time since start: ', timeSinceStart)
         console.log('Count towards limit: ', this.limitCount, ' / ', this.globalLimit)
       }

backend/src/serverless/microservices/python/crowd-backend/crowd/backend/repository/repository.py

@@ -61,7 +61,13 @@ def __init__(self, tenant_id="", db_url=False, test=False, send=True):
                     self.db_url = f'postgresql://{username}:{password}@{host}/{database}'
 
         self.engine = create_engine(
-            self.db_url, echo=False, execution_options={"postgresql_readonly": True, "postgresql_deferrable": True}
+            self.db_url, pool_pre_ping=True, echo=False, execution_options={"postgresql_readonly": True, "postgresql_deferrable": True}, 
+            connect_args={
+                  "keepalives": 1,
+                  "keepalives_idle": 30,
+                  "keepalives_interval": 10,
+                  "keepalives_count": 5,
+              }
         )
 
         Base.metadata.create_all(self.engine, checkfirst=True)