kafka OffsetAndTimestamp 源码

  • 2022-10-20
  • 浏览 (616)

kafka OffsetAndTimestamp 代码

文件路径:/clients/src/main/java/org/apache/kafka/clients/consumer/OffsetAndTimestamp.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.kafka.clients.consumer;

import java.util.Objects;
import java.util.Optional;

/**
 * A container class for offset and timestamp.
 */
public final class OffsetAndTimestamp {
    private final long timestamp;
    private final long offset;
    private final Optional<Integer> leaderEpoch;

    public OffsetAndTimestamp(long offset, long timestamp) {
        this(offset, timestamp, Optional.empty());
    }

    public OffsetAndTimestamp(long offset, long timestamp, Optional<Integer> leaderEpoch) {
        if (offset < 0)
            throw new IllegalArgumentException("Invalid negative offset");

        if (timestamp < 0)
            throw new IllegalArgumentException("Invalid negative timestamp");

        this.offset = offset;
        this.timestamp = timestamp;
        this.leaderEpoch = leaderEpoch;
    }

    public long timestamp() {
        return timestamp;
    }

    public long offset() {
        return offset;
    }

    /**
     * Get the leader epoch corresponding to the offset that was found (if one exists).
     * This can be provided to seek() to ensure that the log hasn't been truncated prior to fetching.
     *
     * @return The leader epoch or empty if it is not known
     */
    public Optional<Integer> leaderEpoch() {
        return leaderEpoch;
    }

    @Override
    public String toString() {
        return "(timestamp=" + timestamp +
                ", leaderEpoch=" + leaderEpoch.orElse(null) +
                ", offset=" + offset + ")";
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        OffsetAndTimestamp that = (OffsetAndTimestamp) o;
        return timestamp == that.timestamp &&
                offset == that.offset &&
                Objects.equals(leaderEpoch, that.leaderEpoch);
    }

    @Override
    public int hashCode() {
        return Objects.hash(timestamp, offset, leaderEpoch);
    }
}

相关信息

kafka 源码目录

相关文章

kafka CommitFailedException 源码

kafka Consumer 源码

kafka ConsumerConfig 源码

kafka ConsumerGroupMetadata 源码

kafka ConsumerInterceptor 源码

kafka ConsumerPartitionAssignor 源码

kafka ConsumerRebalanceListener 源码

kafka ConsumerRecord 源码

kafka ConsumerRecords 源码

kafka CooperativeStickyAssignor 源码

0  赞