org.apache.hudi.org.apache.hadoop.hbase.master.MetricsMasterQuotaSourceFactoryImpl Maven / Gradle / Ivy

/*
 * 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.hadoop.hbase.master;

import org.apache.yetus.audience.InterfaceAudience;

/**
 * Factory to create MetricsMasterQuotaSource instances when given a MetricsMasterWrapper.
 */
@InterfaceAudience.Private
public class MetricsMasterQuotaSourceFactoryImpl implements MetricsMasterQuotaSourceFactory {

  private MetricsMasterQuotaSource quotaSource;

  @Override
  public synchronized MetricsMasterQuotaSource create(MetricsMasterWrapper masterWrapper) {
    if (quotaSource == null) {
      quotaSource = new MetricsMasterQuotaSourceImpl(masterWrapper);
    }
    return quotaSource;
  }
}