- def _on_kafka_relation_changed(self, event: EventBase) -> NoReturn:
- """Reads information about the kafka relation.
-
- Args:
- event (EventBase): Kafka relation event.
- """
- data_loc = event.unit if event.unit else event.app
-
- message_host = event.relation.data[data_loc].get("host")
- message_port = event.relation.data[data_loc].get("port")
-
- if (
- message_host
- and message_port
- and (
- self.state.message_host != message_host
- or self.state.message_port != message_port
- )
- ):
- self.state.message_host = message_host
- self.state.message_port = message_port
- self.on.configure_pod.emit()
-
- def _on_kafka_relation_departed(self, event: EventBase) -> NoReturn:
- """Clear kafka relation data.
-
- Args:
- event (EventBase): Kafka relation event.
- """
- self.state.message_host = None
- self.state.message_port = None
- self.on.configure_pod.emit()
-
- def _on_mongodb_relation_changed(self, event: EventBase) -> NoReturn:
- """Reads information about the DB relation.
-
- Args:
- event (EventBase): DB relation event.
- """
- data_loc = event.unit if event.unit else event.app
-
- database_uri = event.relation.data[data_loc].get("connection_string")
-
- if database_uri and self.state.database_uri != database_uri:
- self.state.database_uri = database_uri
- self.on.configure_pod.emit()
-
- def _on_mongodb_relation_departed(self, event: EventBase) -> NoReturn:
- """Clear mongodb relation data.
-
- Args:
- event (EventBase): DB relation event.
- """
- self.state.database_uri = None
- self.on.configure_pod.emit()
-
- def _missing_relations(self) -> str:
- """Checks if there missing relations.
-
- Returns:
- str: string with missing relations
- """
- data_status = {
- "kafka": self.state.message_host,
- "mongodb": self.state.database_uri,
- }
-
- missing_relations = [k for k, v in data_status.items() if not v]
-
- return ", ".join(missing_relations)
-
- @property
- def relation_state(self) -> Dict[str, Any]:
- """Collects relation state configuration for pod spec assembly.
-
- Returns:
- Dict[str, Any]: relation state information.
- """
- relation_state = {
- "message_host": self.state.message_host,
- "message_port": self.state.message_port,
- "database_uri": self.state.database_uri,
- }