/*
* 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.RecordContext;
/**
* A cache entry
*/
class LRUCacheEntry implements RecordContext {
public final byte[] value;
private final long offset;
private final String topic;
private final int partition;
private final long timestamp;
private long sizeBytes;
private boolean isDirty;
LRUCacheEntry(final byte[] value) {
this(value, false, -1, -1, -1, "");
}
LRUCacheEntry(final byte[] value, final boolean isDirty,
final long offset, final long timestamp, final int partition,
final String topic) {
this.value = value;
this.partition = partition;
this.topic = topic;
this.offset = offset;
this.isDirty = isDirty;
this.timestamp = timestamp;
this.sizeBytes = (value == null ? 0 : value.length) +
1 + // isDirty
8 + // timestamp
8 + // offset
4 + // partition
(topic == null ? 0 : topic.length());
}
@Override
public long offset() {
return offset;
}
@Override
public long timestamp() {
return timestamp;
}
@Override
public String topic() {
return topic;
}
@Override
public int partition() {
return partition;
}
void markClean() {
isDirty = false;
}
boolean isDirty() {
return isDirty;
}
public long size() {
return sizeBytes;
}
}