/*
* 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 java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import javax.management.MalformedObjectNameException;
import org.apache.uima.ducc.common.exception.DuccConfigurationException;
import org.apache.uima.ducc.common.mq.MqHelper;
import org.apache.uima.ducc.common.utils.DuccLogger;
import org.apache.uima.ducc.common.utils.DuccLoggerComponents;
import org.apache.uima.ducc.common.utils.DuccPropertiesHelper;
import org.apache.uima.ducc.common.utils.DuccPropertiesResolver;
import org.apache.uima.ducc.common.utils.id.DuccId;
import org.apache.uima.ducc.transport.event.common.DuccWorkMap;
public class MqReaper {
private static final DuccLogger logger = DuccLoggerComponents.getOrLogger(MqReaper.class.getName());
private static DuccId duccId = null;
private MqHelper mqHelper = null;
private DuccPropertiesResolver duccPropertiesResolver = null;
private String jd_queue_prefix = null;
private static MqReaper instance = null;
public static MqReaper getInstance() throws MalformedObjectNameException, DuccConfigurationException, IOException {
if(instance == null) {
instance = new MqReaper();
}
return instance;
}
public static void resetInstance() {
instance = null;
}
public MqReaper() throws MalformedObjectNameException, DuccConfigurationException, IOException {
resolve();
init();
}
private void init() throws MalformedObjectNameException, DuccConfigurationException, IOException {
String location = "init";
try {
mqHelper = new MqHelper();
} catch (MalformedObjectNameException e) {
logger.error(location,duccId,e);
throw e;
} catch (NullPointerException e) {
logger.error(location,duccId,e);
throw e;
} catch (DuccConfigurationException e) {
logger.error(location,duccId,e);
throw e;
} catch (IOException e) {
logger.error(location,duccId,e);
throw e;
}
logger.info(location,duccId,DuccPropertiesResolver.ducc_broker_hostname+":"+mqHelper.get_broker_hostname());
logger.info(location,duccId,DuccPropertiesResolver.ducc_broker_jmx_port+":"+mqHelper.get_broker_jmx_port());
logger.info(location,duccId,DuccPropertiesResolver.ducc_broker_name+":"+mqHelper.get_broker_name());
logger.info(location,duccId,DuccPropertiesResolver.ducc_broker_url+":"+mqHelper.get_broker_url());
}
private void resolve() {
String location = "resolve";
jd_queue_prefix = getDuccProperty(DuccPropertiesResolver.ducc_jd_queue_prefix);
logger.info(location,duccId,DuccPropertiesResolver.ducc_jd_queue_prefix+":"+jd_queue_prefix);
}
private void configure() {
duccPropertiesResolver = DuccPropertiesHelper.configure();
}
private String getDuccProperty(String key) {
if(duccPropertiesResolver == null) {
configure();
}
String value = duccPropertiesResolver.getFileProperty(key);
return value;
}
private boolean isStartsWith(String a, String b) {
boolean retVal = false;
if(a != null) {
if(b != null) {
if(a.startsWith(b)) {
retVal = true;
}
}
}
return retVal;
}
private ArrayList<String> getJdQueues() {
String location = "getJdQueues";
ArrayList<String> qList = mqHelper.getQueueList();
ArrayList<String> jdQueueList = new ArrayList<String>();
for(String qName : qList) {
if(isStartsWith(qName,jd_queue_prefix)) {
jdQueueList.add(qName);
}
else {
logger.debug(location, duccId, "queue ignore:"+qName);
}
}
return jdQueueList;
}
private String lastMessage = "";
private long lastTime = System.currentTimeMillis();
private void pruningStatus(int size, int removed) {
String location = "pruningStatus";
String message = "size:"+size+" "+"removed:"+removed;
long time = System.currentTimeMillis();
if(message.equals(lastMessage)) {
long elapsed = time - lastTime;
if(elapsed > 1000*60*60) {
logger.info(location, duccId, message);
lastTime = time;
}
}
else {
logger.info(location, duccId, message);
lastMessage = message;
lastTime = time;
}
}
public int removeUnusedJdQueues(DuccWorkMap workMap) {
String location = "removeUnusedJdQueues";
int removed = 0;
try {
ArrayList<String> qList = getJdQueues();
Iterator<DuccId> iterator = workMap.getJobKeySet().iterator();
while( iterator.hasNext() ) {
DuccId jobId = iterator.next();
String jqKeep = jd_queue_prefix+jobId.getFriendly();
if(qList.remove(jqKeep)) {
logger.debug(location, duccId, "queue keep:"+jqKeep);
}
else {
logger.trace(location, duccId, "queue not found:"+jqKeep);
}
}
for( String qName : qList ) {
logger.info(location, duccId, "queue discard:"+qName);
try {
mqHelper.removeQueue(qName);
removed++;
}
catch(Throwable t) {
logger.error(location, duccId, t);
init();
}
}
pruningStatus(qList.size(),removed);
}
catch(Throwable t) {
logger.error(location, duccId, t);
}
return removed;
}
}