io.atomix.raft.storage.log.entry.InitialEntry Maven / Gradle / Ivy
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/*
* Copyright 2015-present Open Networking Foundation
* Copyright © 2020 camunda services GmbH ([email protected])
*
* 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 io.atomix.raft.storage.log.entry;
import io.atomix.raft.storage.serializer.RaftEntrySerializer;
import io.atomix.raft.storage.serializer.RaftEntrySerializer.SerializedBufferWriterAdapter;
import io.camunda.zeebe.util.buffer.BufferWriter;
/**
* Indicates a leader change has occurred.
*
* The {@code InitialEntry} is logged by a leader at the beginning of its term to indicate that a
* leadership change has occurred. Initialize entries are always the first entry to be committed at
* the start of a leader's term.
*/
public record InitialEntry() implements RaftEntry {
@Override
public BufferWriter toSerializable(final long term, final RaftEntrySerializer serializer) {
return new SerializedBufferWriterAdapter(
serializer::getInitialEntrySerializedLength,
(buffer, offset) -> serializer.writeInitialEntry(term, this, buffer, offset));
}
}