org.apache.flink.connector.testframe.external.sink

Interface DataStreamSinkExternalContext<T>

Type Parameters:

T - Type of elements before serialization by sink

All Superinterfaces:

AutoCloseable, ExternalContext, org.apache.flink.api.java.typeutils.ResultTypeQueryable<T>

All Known Subinterfaces:

DataStreamSinkV1ExternalContext<T>, DataStreamSinkV2ExternalContext<T>

@Experimental
public interface DataStreamSinkExternalContext<T>
extends ExternalContext, org.apache.flink.api.java.typeutils.ResultTypeQueryable<T>

External context for DataStream sinks.

Method Summary

Modifier and Type	Method and Description
ExternalSystemDataReader<T>	createSinkDataReader(TestingSinkSettings sinkSettings) Create a reader for consuming data written to the external system by sink.
List<T>	generateTestData(TestingSinkSettings sinkSettings, long seed) Generate test data.

Methods inherited from interface org.apache.flink.connector.testframe.external.ExternalContext

getConnectorJarPaths

Methods inherited from interface java.lang.AutoCloseable

close

Methods inherited from interface org.apache.flink.api.java.typeutils.ResultTypeQueryable

getProducedType

Method Detail

createSinkDataReader

ExternalSystemDataReader<T> createSinkDataReader(TestingSinkSettings sinkSettings)

Create a reader for consuming data written to the external system by sink.

generateTestData

List<T> generateTestData(TestingSinkSettings sinkSettings,
                         long seed)

Generate test data.

These test data will be sent to sink via a special source in Flink job, write to external system by sink, consume back via ExternalSystemDataReader, and make comparison with T#equals(Object) for validating correctness.

Make sure that the T#equals(Object) returns false when the records in different splits.

Parameters:

sinkSettings - settings of the sink

seed - Seed for generating random test data set.

Returns:

List of generated test data.