| /* |
| * 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.uima.ducc.orchestrator.maintenance; |
| |
| import org.apache.uima.ducc.common.utils.DuccLogger; |
| import org.apache.uima.ducc.common.utils.DuccLoggerComponents; |
| import org.apache.uima.ducc.common.utils.DuccPropertiesResolver; |
| import org.apache.uima.ducc.common.utils.id.DuccId; |
| import org.apache.uima.ducc.orchestrator.OrchestratorCommonArea; |
| import org.apache.uima.ducc.orchestrator.StateManager; |
| import org.apache.uima.ducc.transport.event.common.DuccWorkMap; |
| |
| |
| public class MaintenanceThread extends Thread { |
| |
| private static final DuccLogger logger = DuccLoggerComponents.getOrLogger(MaintenanceThread.class.getName()); |
| |
| private static MaintenanceThread instance = new MaintenanceThread(); |
| |
| public static MaintenanceThread getInstance() { |
| return instance; |
| } |
| |
| private static DuccId jobid = null; |
| |
| private OrchestratorCommonArea orchestratorCommonArea = OrchestratorCommonArea.getInstance(); |
| private DuccWorkMap workMap = orchestratorCommonArea.getWorkMap(); |
| |
| private StateManager stateManager = StateManager.getInstance(); |
| private HealthMonitor healthMonitor = HealthMonitor.getInstance(); |
| |
| private long minMillis = 1000; |
| private long wakeUpMillis = 2*60*1000; |
| |
| private long sleepTime = wakeUpMillis; |
| private long lastTime = System.currentTimeMillis();; |
| |
| private boolean die = false; |
| |
| private MaintenanceThread() { |
| initialize(); |
| } |
| |
| private void initialize() { |
| String location = "initialize"; |
| String maintenance_rate = DuccPropertiesResolver.getInstance().getProperty(DuccPropertiesResolver.ducc_orchestrator_maintenance_rate); |
| if(maintenance_rate != null) { |
| try { |
| long rate = Long.parseLong(maintenance_rate); |
| if(rate < minMillis) { |
| logger.error(location, jobid, DuccPropertiesResolver.ducc_orchestrator_maintenance_rate+" < minimum of "+minMillis); |
| } |
| else { |
| wakeUpMillis = rate; |
| sleepTime = wakeUpMillis; |
| } |
| } |
| catch(Throwable t) { |
| logger.error(location, jobid, t); |
| } |
| } |
| logger.info(location, jobid, "rate:"+wakeUpMillis); |
| } |
| |
| private boolean isTime() { |
| boolean retVal = true; |
| long currTime = System.currentTimeMillis(); |
| long diffTime = currTime - lastTime; |
| if(diffTime < wakeUpMillis) { |
| retVal = false; |
| sleepTime = diffTime; |
| } |
| else { |
| lastTime = currTime; |
| sleepTime = wakeUpMillis; |
| } |
| return retVal; |
| } |
| |
| public void run() { |
| String location = "run"; |
| logger.trace(location, jobid, "enter"); |
| while(!die) { |
| try { |
| if(isTime()) { |
| stateManager.prune(workMap); |
| healthMonitor.ajudicate(); |
| } |
| } |
| catch(Throwable t) { |
| logger.error(location, jobid, t); |
| } |
| try { |
| Thread.sleep(sleepTime); |
| } |
| catch(Throwable t) { |
| logger.error(location, jobid, t); |
| } |
| } |
| logger.trace(location, jobid, "exit"); |
| } |
| } |