Java tutorial
/* Copyright 2013, 2016 Nationale-Nederlanden 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 nl.nn.adapterframework.extensions.tibco; import java.util.Enumeration; import javax.jms.Connection; import javax.jms.ConnectionFactory; import javax.jms.JMSException; import javax.jms.Message; import javax.jms.Queue; import javax.jms.QueueBrowser; import javax.jms.Session; import nl.nn.adapterframework.util.CredentialFactory; import nl.nn.adapterframework.util.LogUtil; import org.apache.commons.lang.StringUtils; import org.apache.commons.lang.time.DurationFormatUtils; import org.apache.log4j.Logger; import com.tibco.tibjms.admin.ServerInfo; import com.tibco.tibjms.admin.TibjmsAdmin; import com.tibco.tibjms.admin.TibjmsAdminException; /** * Some utilities for working with TIBCO. * * @author Peter Leeuwenburgh */ public class TibcoUtils { static Logger log = LogUtil.getLogger(TibcoUtils.class); public static long getQueueFirstMessageAge(String provUrl, String authAlias, String userName, String password, String queueName) throws JMSException { return getQueueFirstMessageAge(provUrl, authAlias, userName, password, queueName, null); } /** * return -1: no message found * return -2: message found, but not of type Message. */ public static long getQueueFirstMessageAge(String provUrl, String authAlias, String userName, String password, String queueName, String messageSelector) throws JMSException { Connection connection = null; Session jSession = null; try { connection = getConnection(provUrl, authAlias, userName, password); jSession = connection.createSession(false, javax.jms.Session.AUTO_ACKNOWLEDGE); return getQueueFirstMessageAge(jSession, queueName, messageSelector); } finally { if (connection != null) { try { connection.close(); } catch (JMSException e) { log.warn("Exception on closing connection", e); } } } } public static Connection getConnection(String provUrl, String authAlias, String userName, String password) throws JMSException { String url = StringUtils.replace(provUrl, "tibjmsnaming:", "tcp:"); CredentialFactory cf = new CredentialFactory(authAlias, userName, password); ConnectionFactory factory = new com.tibco.tibjms.TibjmsConnectionFactory(url); return factory.createConnection(cf.getUsername(), cf.getPassword()); } protected static long getQueueFirstMessageAge(Session jSession, String queueName) throws JMSException { return getQueueFirstMessageAge(jSession, queueName, null); } protected static long getQueueFirstMessageAge(Session jSession, String queueName, String messageSelector) throws JMSException { return getQueueFirstMessageAge(jSession, queueName, messageSelector, System.currentTimeMillis()); } protected static long getQueueFirstMessageAge(Session jSession, String queueName, long currentTime) throws JMSException { return getQueueFirstMessageAge(jSession, queueName, null, currentTime); } protected static long getQueueFirstMessageAge(Session jSession, String queueName, String messageSelector, long currentTime) throws JMSException { return getQueueFirstMessageAge(jSession, queueName, messageSelector, currentTime, true); } protected static long getQueueFirstMessageAge(Session jSession, String queueName, String messageSelector, long currentTime, boolean warn) throws JMSException { QueueBrowser queueBrowser = null; try { Queue queue = jSession.createQueue(queueName); if (messageSelector == null) { queueBrowser = jSession.createBrowser(queue); } else { queueBrowser = jSession.createBrowser(queue, messageSelector); } Enumeration enm = queueBrowser.getEnumeration(); if (enm.hasMoreElements()) { Object o = enm.nextElement(); if (o instanceof Message) { Message msg = (Message) o; long jmsTimestamp = msg.getJMSTimestamp(); return currentTime - jmsTimestamp; } else { if (warn) { log.warn("message was not of type Message, but [" + o.getClass().getName() + "]"); } return -2; } } else { return -1; } } finally { if (queueBrowser != null) { try { queueBrowser.close(); } catch (JMSException e) { log.warn("Exception on closing queueBrowser", e); } } } } protected static String getQueueFirstMessageAgeAsString(Session jSession, String queueName, long currentTime) { try { long age = getQueueFirstMessageAge(jSession, queueName, null, currentTime, false); if (age == -2) { return "??"; } else if (age == -1) { return null; } else { return DurationFormatUtils.formatDuration(age, "ddd-HH:mm:ss"); } } catch (JMSException e) { return "?"; } } public static long getQueueMessageCount(String provUrl, String authAlias, String userName, String password, String queueName, String messageSelector) throws JMSException { Connection connection = null; Session jSession = null; try { connection = getConnection(provUrl, authAlias, userName, password); jSession = connection.createSession(false, javax.jms.Session.AUTO_ACKNOWLEDGE); return getQueueMessageCount(jSession, queueName, messageSelector); } finally { if (connection != null) { try { connection.close(); } catch (JMSException e) { log.warn("Exception on closing connection", e); } } } } protected static long getQueueMessageCount(Session jSession, String queueName, String messageSelector) throws JMSException { QueueBrowser queueBrowser = null; try { Queue queue = jSession.createQueue(queueName); if (messageSelector == null) { queueBrowser = jSession.createBrowser(queue); } else { queueBrowser = jSession.createBrowser(queue, messageSelector); } int count = 0; for (Enumeration enm = queueBrowser.getEnumeration(); enm.hasMoreElements(); enm.nextElement()) { count++; } return count; } finally { if (queueBrowser != null) { try { queueBrowser.close(); } catch (JMSException e) { log.warn("Exception on closing queueBrowser", e); } } } } protected static TibjmsAdmin getActiveServerAdmin(String url, CredentialFactory cf) throws TibjmsAdminException { TibjmsAdmin admin = null; String[] uws = url.split(","); String uw = null; boolean uws_ok = false; for (int i = 0; !uws_ok && i < uws.length; i++) { uw = uws[i].trim(); admin = new TibjmsAdmin(uw, cf.getUsername(), cf.getPassword()); if (admin != null) { if (admin.getInfo().getState() == ServerInfo.SERVER_ACTIVE) { uws_ok = true; } else { log.debug("Server [" + uw + "] is not active, state [" + admin.getInfo().getState() + "]"); try { admin.close(); } catch (TibjmsAdminException e) { log.warn("Exception on closing Tibjms Admin on server [" + uw + "]", e); } } } } if (!uws_ok) { log.warn("Could not find an active server"); return null; } else { log.debug("Found active server [" + uw + "]"); return admin; } } }