| /* |
| * 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.ws.helper; |
| |
| import javax.management.MBeanServerConnection; |
| import javax.management.ObjectName; |
| |
| 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.ws.db.DbQuery; |
| |
| public class DatabaseHelper extends JmxHelper { |
| |
| private static DuccLogger logger = DuccLoggerComponents.getWsLogger(DatabaseHelper.class.getName()); |
| private static DuccId jobid = null; |
| |
| private static DatabaseHelper instance = new DatabaseHelper(); |
| |
| public static DatabaseHelper getInstance() { |
| return instance; |
| } |
| |
| protected boolean enabled = false; |
| protected String host = null; |
| |
| private DatabaseHelper() { |
| init(); |
| } |
| |
| private void init() { |
| String location = "init"; |
| try { |
| DuccPropertiesResolver dpr = DuccPropertiesResolver.getInstance(); |
| host = dpr.getProperty(DuccPropertiesResolver.ducc_database_host); |
| if(host != null) { |
| setHost(host); |
| if(!host.equalsIgnoreCase(DuccPropertiesResolver.ducc_database_disabled)) { |
| enabled = true; |
| } |
| } |
| if(enabled) { |
| String jmxHost = dpr.getProperty(DuccPropertiesResolver.ducc_database_jmx_host); |
| if(jmxHost != null) { |
| try { |
| setJmxHost(jmxHost); |
| } |
| catch(Exception e) { |
| logger.error(location, jobid, e); |
| } |
| } |
| setJmxPort(7199); // default |
| String jmxPort = dpr.getProperty(DuccPropertiesResolver.ducc_database_jmx_port); |
| if(jmxPort != null) { |
| try { |
| setJmxPort(Integer.parseInt(jmxPort)); |
| } |
| catch(Exception e) { |
| logger.error(location, jobid, e); |
| } |
| } |
| jmxConnect(); |
| } |
| } |
| catch(Exception e) { |
| logger.error(location, jobid, e); |
| } |
| } |
| |
| public boolean isEnabled() { |
| return enabled; |
| } |
| |
| public boolean isDisabled() { |
| return !enabled; |
| } |
| |
| private void setHost(String value) { |
| host = value; |
| } |
| |
| public String getHost() { |
| return host; |
| } |
| |
| // Runtime Info // |
| |
| public boolean isAlive() { |
| boolean retVal = DbQuery.getInstance().isUp(); |
| return retVal; |
| } |
| |
| public Long getStartTime() { |
| String location = "getStartTime"; |
| Long retVal = new Long(0); |
| Object o = null; |
| MBeanServerConnection mbsc = null; |
| try { |
| mbsc = getMBSC(); |
| o = mbsc.getAttribute(new ObjectName("java.lang:type=Runtime"), "StartTime"); |
| retVal = (Long) o; |
| } |
| catch(Exception e) { |
| try { |
| reconnect(); |
| mbsc = getMBSC(); |
| o = mbsc.getAttribute(new ObjectName("java.lang:type=Runtime"), "StartTime"); |
| retVal = (Long) o; |
| } |
| catch(Exception e2) { |
| logger.error(location, jobid, e2); |
| } |
| } |
| return retVal; |
| } |
| |
| @Override |
| protected void reconnect() { |
| String location = "reconnect"; |
| init(); |
| logger.debug(location, jobid, "reconnected"); |
| } |
| |
| } |