| package org.apache.helix.healthcheck; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.util.Random; |
| import java.util.Timer; |
| import java.util.TimerTask; |
| |
| import org.apache.helix.HelixTimerTask; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class ParticipantHealthReportTask extends HelixTimerTask { |
| private static final Logger LOG = LoggerFactory.getLogger(ParticipantHealthReportTask.class); |
| public final static int DEFAULT_REPORT_LATENCY = 60 * 1000; |
| private final int _reportLatency; |
| |
| final ParticipantHealthReportCollectorImpl _healthReportCollector; |
| |
| class ParticipantHealthReportTimerTask extends TimerTask { |
| |
| @Override |
| public void run() { |
| _healthReportCollector.transmitHealthReports(); |
| } |
| } |
| |
| public ParticipantHealthReportTask(ParticipantHealthReportCollectorImpl healthReportCollector) { |
| this(healthReportCollector, DEFAULT_REPORT_LATENCY); |
| } |
| |
| public ParticipantHealthReportTask(ParticipantHealthReportCollectorImpl healthReportCollector, |
| int reportLatency) { |
| _healthReportCollector = healthReportCollector; |
| _reportLatency = reportLatency; |
| } |
| |
| @Override |
| public synchronized void start() { |
| if (_timer == null) { |
| LOG.info("Start HealthCheckInfoReportingTask"); |
| _timer = new Timer("ParticipantHealthReportTimerTask", true); |
| _timer.scheduleAtFixedRate(new ParticipantHealthReportTimerTask(), |
| new Random().nextInt(_reportLatency), _reportLatency); |
| } else { |
| LOG.warn("ParticipantHealthReportTimerTask already started"); |
| } |
| } |
| |
| @Override |
| public synchronized void stop() { |
| if (_timer != null) { |
| LOG.info("Stop ParticipantHealthReportTimerTask"); |
| _timer.cancel(); |
| _timer = null; |
| } else { |
| LOG.warn("ParticipantHealthReportTimerTask already stopped"); |
| } |
| } |
| } |