/
RecordsPublisher.java
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/
RecordsPublisher.java
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/*
* Copyright 2019 Amazon.com, Inc. or its affiliates.
* Licensed under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package software.amazon.kinesis.retrieval;
import org.reactivestreams.Publisher;
import software.amazon.kinesis.common.InitialPositionInStreamExtended;
import software.amazon.kinesis.common.RequestDetails;
import software.amazon.kinesis.retrieval.kpl.ExtendedSequenceNumber;
/**
* Provides a record publisher that will retrieve records from Kinesis for processing
*/
public interface RecordsPublisher extends Publisher<RecordsRetrieved> {
/**
* Initializes the publisher with where to start processing. If there is a stored sequence number the publisher will
* begin from that sequence number, otherwise it will use the initial position.
*
* @param extendedSequenceNumber
* the sequence number to start processing from
* @param initialPositionInStreamExtended
* if there is no sequence number the initial position to use
*/
void start(ExtendedSequenceNumber extendedSequenceNumber, InitialPositionInStreamExtended initialPositionInStreamExtended);
/**
* Restart from the last accepted and processed
* @param recordsRetrieved the processRecordsInput to restart from
*/
void restartFrom(RecordsRetrieved recordsRetrieved);
/**
* Shutdowns the publisher. Once this method returns the publisher should no longer provide any records.
*/
void shutdown();
/**
* Gets last successful request details.
*
* @return details associated with last successful request.
*/
RequestDetails getLastSuccessfulRequestDetails();
/**
* Notify the publisher on receipt of a data event.
*
* @param ack acknowledgement received from the subscriber.
*/
default void notify(RecordsDeliveryAck ack) {
throw new UnsupportedOperationException("RecordsPublisher does not support acknowledgement from Subscriber");
}
}