kafka OffsetAndTimestamp 源码
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);
}
}
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