io.camunda.zeebe.snapshots.SnapshotChunkReader Maven / Gradle / Ivy
/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH under
* one or more contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright ownership.
* Licensed under the Zeebe Community License 1.1. You may not use this file
* except in compliance with the Zeebe Community License 1.1.
*/
package io.camunda.zeebe.snapshots;
import io.camunda.zeebe.util.CloseableSilently;
import java.nio.ByteBuffer;
import java.util.Iterator;
/**
* Represents a snapshot chunk reader, which means it is used to chunk an {@link PersistedSnapshot}
* and read it from it's persisted storage.
*/
public interface SnapshotChunkReader extends Iterator, CloseableSilently {
void reset();
/**
* Skips all chunks up to the one with the given ID, inclusively, such that the next chunk would
* be the chunk right after it (if any). If no ID is given then should not do anything.
*
* @param id the chunk ID to seek to; maybe null
*/
void seek(ByteBuffer id);
/**
* Returns the next chunk ID; if {@link #hasNext()} should return false, then this will return
* null.
*
* @return the next chunk ID
*/
ByteBuffer nextId();
}