kafka BufferKey 源码
kafka BufferKey 代码
文件路径：/streams/src/main/java/org/apache/kafka/streams/state/internals/BufferKey.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.streams.state.internals;
import org.apache.kafka.common.utils.Bytes;
import java.util.Objects;
public final class BufferKey implements Comparable<BufferKey> {
private final long time;
private final Bytes key;
BufferKey(final long time, final Bytes key) {
this.time = time;
this.key = key;
}
long time() {
return time;
}
Bytes key() {
return key;
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final BufferKey bufferKey = (BufferKey) o;
return time == bufferKey.time &&
Objects.equals(key, bufferKey.key);
}
@Override
public int hashCode() {
return Objects.hash(time, key);
}
@Override
public int compareTo(final BufferKey o) {
// ordering of keys within a time uses hashCode.
final int timeComparison = Long.compare(time, o.time);
return timeComparison == 0 ? key.compareTo(o.key) : timeComparison;
}
@Override
public String toString() {
return "BufferKey{" +
"key=" + key +
", time=" + time +
'}';
}
}
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