base sqllocks_spindle.engine.sinks.base ¶ Classes¶ Sink ¶ Bases: Protocol Protocol all sinks must implement. Methods:¶ open(schema) ¶ Called once before any chunks arrive. Create directories/tables/connections. write_chunk(table, arrays) ¶ Write one chunk of data for a table. Called once per table per chunk. close() ¶ Flush, commit, teardown. Called once after all chunks. FabricConnectionProfile dataclass ¶ Auth profile shared by all Fabric-backed sinks.