pulsar-broker/src/main/java/com/yahoo/pulsar/broker/loadbalance/LoadReportUpdaterTask.java

/**
 * Copyright 2016 Yahoo Inc.
 *
 * Licensed 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 com.yahoo.pulsar.broker.loadbalance;

import java.lang.Runnable;
import java.util.concurrent.atomic.AtomicReference;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Represents a task which reads load report from zookeeper for all the brokers and updates the ranking
 */
public class LoadReportUpdaterTask implements Runnable {
    private static final Logger LOG = LoggerFactory.getLogger(LoadReportUpdaterTask.class);
    private final AtomicReference<LoadManager> loadManager;

    public LoadReportUpdaterTask(AtomicReference<LoadManager> manager) {
        loadManager = manager;
    }

    @Override
    public void run() {
        try {
            loadManager.get().writeLoadReportOnZookeeper();
        } catch (Exception e) {
            LOG.warn("Unable to write load report on Zookeeper - [{}]", e);
        }
    }
}