io.camunda.zeebe.journal.file.UninitializedSegment 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 Camunda License 1.0. You may not use this file
* except in compliance with the Camunda License 1.0.
*/
package io.camunda.zeebe.journal.file;
import java.nio.MappedByteBuffer;
/**
* Holds a normal segment file that hasn't been written to and that has no {@link
* SegmentDescriptor}.
*/
public record UninitializedSegment(
SegmentFile file,
long segmentId,
int maxSegmentSize,
MappedByteBuffer buffer,
JournalIndex journalIndex) {
/**
* Creates a proper, initialized segment by writing a {@link SegmentDescriptor } with the given
* index.
*/
public Segment initializeForUse(
final long index, final long lastWrittenAsqn, final JournalMetrics metrics) {
final var updatedDescriptor =
SegmentDescriptor.builder()
.withId(segmentId)
.withIndex(index)
.withMaxSegmentSize(maxSegmentSize)
.build();
updatedDescriptor.copyTo(buffer);
return new Segment(file, updatedDescriptor, buffer, lastWrittenAsqn, journalIndex, metrics);
}
}