io.camunda.zeebe.journal.file.FlushableSegment 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.journal.file;
/** The minimum API a segment has to implement to be flush-able. */
interface FlushableSegment {
/**
* The current last written index of the segment, giving a guaranteed lower bound for a flush
* index
*/
long lastIndex();
/**
* Flushes any changes from the segment to its underlying storage.
*
* If the method returns true, then it is guaranteed that the modified pages for this segment *
* have been flushed to disk (according to the underlying file system).
*
* @return true if the segment flushed successfully, false otherwise
*/
boolean flush();
}