org.apache.flink.runtime.state.gemini.engine.snapshot.SnapshotCompactionStat Maven / Gradle / Ivy

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/*
 *
 *  * 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.flink.runtime.state.gemini.engine.snapshot;

import java.util.concurrent.atomic.AtomicInteger;

/**
 * Statistics for snapshot compaction..
 */
public class SnapshotCompactionStat {

	/**
	 * Amplification ratio before compaction for last snapshot.
	 */
	private float amplificationRatioBeforeCompaction;

	/**
	 * Number of compaction that has happened.
	 */
	private AtomicInteger numberCompaction;

	/**
	 * Size of data to compaction.
	 */
	private long compactionSize;

	/**
	 * Amplification ratio for last completed snapshot.
	 * This is the actual amplification ratio.
	 */
	private float actualAmplificationRatio;

	/**
	 * Duration of last compaction.
	 */
	private long compactionDuration;

	public SnapshotCompactionStat() {
		this.amplificationRatioBeforeCompaction = 1.0f;
		this.numberCompaction = new AtomicInteger(0);
		this.compactionSize = 0L;
		this.actualAmplificationRatio = 1.0f;
		this.compactionDuration = 0L;
	}

	public float getAmplificationRatioBeforeCompaction() {
		return amplificationRatioBeforeCompaction;
	}

	public void setAmplificationRatioBeforeCompaction(float amplificationRatioBeforeCompaction) {
		this.amplificationRatioBeforeCompaction = amplificationRatioBeforeCompaction;
	}

	public int addAndGetNumberCompaction(int i) {
		return numberCompaction.addAndGet(i);
	}

	public long getCompactionSize() {
		return compactionSize;
	}

	public void setCompactionSize(long compactionSize) {
		this.compactionSize = compactionSize;
	}

	public float getActualAmplificationRatio() {
		return actualAmplificationRatio;
	}

	public void setActualAmplificationRatio(float actualAmplificationRatio) {
		this.actualAmplificationRatio = actualAmplificationRatio;
	}

	public long getCompactionDuration() {
		return compactionDuration;
	}

	public void setCompactionDuration(long compactionDuration) {
		this.compactionDuration = compactionDuration;
	}

	@Override
	public String toString() {
		return "SnapshotCompactionStat{" +
			"amplificationRatioBeforeCompaction=" + amplificationRatioBeforeCompaction +
			", numberCompaction=" + numberCompaction +
			", compactionSize=" + compactionSize +
			", actualAmplificationRatio=" + actualAmplificationRatio +
			", compactionDuration=" + compactionDuration +
			"}";
	}
}