kafka ContextualRecord 源码
kafka ContextualRecord 代码
文件路径：/streams/src/main/java/org/apache/kafka/streams/state/internals/ContextualRecord.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.streams.processor.internals.ProcessorRecordContext;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Objects;
import static org.apache.kafka.common.utils.Utils.getNullableSizePrefixedArray;
public class ContextualRecord {
private final byte[] value;
private final ProcessorRecordContext recordContext;
public ContextualRecord(final byte[] value, final ProcessorRecordContext recordContext) {
this.value = value;
this.recordContext = Objects.requireNonNull(recordContext);
}
public ProcessorRecordContext recordContext() {
return recordContext;
}
public byte[] value() {
return value;
}
long residentMemorySizeEstimate() {
return (value == null ? 0 : value.length) + recordContext.residentMemorySizeEstimate();
}
static ContextualRecord deserialize(final ByteBuffer buffer) {
final ProcessorRecordContext context = ProcessorRecordContext.deserialize(buffer);
final byte[] value = getNullableSizePrefixedArray(buffer);
return new ContextualRecord(value, context);
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final ContextualRecord that = (ContextualRecord) o;
return Arrays.equals(value, that.value) &&
Objects.equals(recordContext, that.recordContext);
}
@Override
public int hashCode() {
return Objects.hash(value, recordContext);
}
@Override
public String toString() {
return "ContextualRecord{" +
"recordContext=" + recordContext +
", value=" + Arrays.toString(value) +
'}';
}
}
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