Fix/agent relation (#77)

* fix: defer unhandled relation joined

* fix: remove defer

src/agent.py

@@ -62,6 +62,8 @@ def _on_deprecated_agent_relation_joined(self, event: ops.RelationJoinedEvent) -
         """
         container = self.charm.unit.get_container(JENKINS_SERVICE_NAME)
         if not container.can_connect() or not self.state.is_storage_ready:
+            logger.warning("Service not yet ready. Deferring.")
+            event.defer()
             return
         # The relation is joined, it cannot be None, hence the type casting.
         deprecated_agent_relation_meta = typing.cast(
@@ -101,6 +103,8 @@ def _on_agent_relation_joined(self, event: ops.RelationJoinedEvent) -> None:
         """
         container = self.charm.unit.get_container(JENKINS_SERVICE_NAME)
         if not container.can_connect() or not self.state.is_storage_ready:
+            logger.warning("Service not yet ready. Deferring.")
+            event.defer()
             return
         # The relation is joined, it cannot be None, hence the type casting.
         agent_relation_meta = typing.cast(
@@ -144,6 +148,7 @@ def _on_deprecated_agent_relation_departed(self, event: ops.RelationDepartedEven
         # the event unit cannot be None.
         container = self.charm.unit.get_container(JENKINS_SERVICE_NAME)
         if not container.can_connect() or not self.state.is_storage_ready:
+            logger.warning("Relation departed before service ready.")
             return
 
         # The relation data is removed before this particular hook runs, making the name set by the
@@ -171,6 +176,7 @@ def _on_agent_relation_departed(self, event: ops.RelationDepartedEvent) -> None:
         # the event unit cannot be None.
         container = self.charm.unit.get_container(JENKINS_SERVICE_NAME)
         if not container.can_connect() or not self.state.is_storage_ready:
+            logger.warning("Relation departed before service ready.")
             return
 
         # The relation data is removed before this particular hook runs, making the name set by the