remove jndi config, new ValueObject TaskTransfer, v4.0.16

2023-08-14 20:16:47 +02:00 · 2023-08-14 20:16:47 +02:00 · a85f0d1bec
commit a85f0d1bec
parent 8409ede74b
18 changed files with 299 additions and 330 deletions
--- a/hsarback/pom.xml
+++ b/hsarback/pom.xml
@ -5,7 +5,7 @@
 	<groupId>de.hsadmin</groupId>
 	<artifactId>hsar</artifactId>
 	<packaging>war</packaging>
-	<version>4.0.15</version>
+	<version>4.0.16</version>
 	<name>HSAdmin Stable Backend Webapp</name>
 	<url>http://maven.apache.org</url>
 	<properties>
@ -36,12 +36,12 @@
 		<dependency>
 			<groupId>de.hsadmin.core</groupId>
 			<artifactId>hsadmin-util</artifactId>
-			<version>4.0.15</version>
+			<version>4.0.16</version>
 		</dependency>
 		<dependency>
 			<groupId>de.hsadmin.core</groupId>
 			<artifactId>hsadmin-qserv</artifactId>
-			<version>4.0.15</version>
+			<version>4.0.16</version>
 		</dependency>
 		<dependency>
 			<groupId>commons-httpclient</groupId>
@ -78,6 +78,11 @@
 			<artifactId>openjpa</artifactId>
 			<version>3.2.2</version>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.activemq</groupId>
+			<artifactId>activemq-client</artifactId>
+			<version>5.17.5</version>
+		</dependency>
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
@ -90,18 +95,6 @@
 			<version>4.0.1</version>
 			<scope>provided</scope>
 		</dependency>
-		<dependency>
-			<groupId>org.apache.activemq</groupId>
-			<artifactId>activemq-all</artifactId>
-			<version>5.18.1</version>
-			<scope>provided</scope>
-		</dependency>
-		<dependency>
-			<groupId>org.apache.geronimo.specs</groupId>
-			<artifactId>geronimo-jms_1.1_spec</artifactId>
-			<version>1.1.1</version>
-			<scope>provided</scope>
-		</dependency>
 	</dependencies>
 	<build>
 		<finalName>hsar</finalName>
--- a/hsarback/src/main/java/de/hsadmin/servlets/QueueStatusReceiverServlet.java
+++ b/hsarback/src/main/java/de/hsadmin/servlets/QueueStatusReceiverServlet.java
@ -2,6 +2,8 @@ package de.hsadmin.servlets;

 import java.io.IOException;
 import java.io.PrintWriter;
+import java.io.Serializable;
+import java.util.Date;

 import javax.jms.ExceptionListener;
 import javax.jms.JMSException;
@ -10,15 +12,9 @@ import javax.jms.MessageListener;
 import javax.jms.ObjectMessage;
 import javax.jms.Queue;
 import javax.jms.QueueConnection;
-import javax.jms.QueueConnectionFactory;
 import javax.jms.QueueReceiver;
 import javax.jms.QueueSession;
 import javax.jms.Session;
-import javax.naming.Context;
-import javax.naming.InitialContext;
-import javax.naming.NameClassPair;
-import javax.naming.NamingEnumeration;
-import javax.naming.NamingException;
 import javax.persistence.EntityManager;
 import javax.servlet.ServletConfig;
 import javax.servlet.ServletException;
@ -31,9 +27,9 @@ import org.apache.activemq.ActiveMQConnectionFactory;
 import de.hsadmin.core.model.TechnicalException;
 import de.hsadmin.core.model.TicketValidator;
 import de.hsadmin.core.model.Transaction;
-import de.hsadmin.core.qserv.NullProcessor;
 import de.hsadmin.core.qserv.Processor;
 import de.hsadmin.core.qserv.QueueTask;
+import de.hsadmin.core.qserv.TaskTransfer;
 import de.hsadmin.core.util.Config;

 public class QueueStatusReceiverServlet extends HttpServlet 
@ -41,11 +37,10 @@ public class QueueStatusReceiverServlet extends HttpServlet

 	private static final long serialVersionUID = -5701350884034782083L;

-	private static boolean initQueuesDone = false;
-	
+	private String jmsUrl;
 	private String jmsUser;
 	private String jmsPass;
-	private QueueConnectionFactory queueConnectionFactory;
+	private String jmsStatusQueue;
 	private QueueConnection queueConnection;
 	private QueueSession queueSession;
 	private boolean isConnected;
@ -61,39 +56,24 @@ public class QueueStatusReceiverServlet extends HttpServlet
 		isConnected = false;
 		messageCount = 0;
 		errorCount = 0;
-		try {
-			if (!initQueuesDone) {
-				initQueues();
-			}
-			initQueuesDone = true;
-		} catch (NamingException e) {
-			throw new ServletException(e);
-		}
-		try {
-			connect();
-		} catch (NamingException e) {
-			throw new ServletException(e);
-		}
+		connect();
 	}

-	private void connect() throws NamingException {
+	private void connect() {
 		Config config = Config.getInstance();
+		jmsUrl = config.getProperty("hsadmin.jms.url", "tcp://localhost:61616");
 		jmsUser = config.getProperty("hsadmin.jms.username", "hsadmin");
 		jmsPass = config.getProperty("hsadmin.jms.password", "hsadmin-pw");
-		InitialContext ctx = new InitialContext();
-		Context env = (Context) ctx.lookup("java:comp/env");
-		queueConnectionFactory = (QueueConnectionFactory) env.lookup("jms/QueueCF");
-		if (queueConnectionFactory instanceof ActiveMQConnectionFactory) {
-			ActiveMQConnectionFactory activeMQConnectionFactory = (ActiveMQConnectionFactory) queueConnectionFactory;
-			activeMQConnectionFactory.setTrustAllPackages(true);
-		}
+		jmsStatusQueue = config.getProperty("hsadmin.jms.status-queue", "queue.Status");
+		final ActiveMQConnectionFactory mqConnectionFactory = new ActiveMQConnectionFactory(jmsUrl);
+		mqConnectionFactory.setTrustAllPackages(true);
 		int timeoutCounter = 10;
 		while (!isConnected && (timeoutCounter > 0)) {
 			try {
-				queueConnection = queueConnectionFactory.createQueueConnection(jmsUser, jmsPass);
+				queueConnection = mqConnectionFactory.createQueueConnection(jmsUser, jmsPass);
 				queueConnection.setExceptionListener(this);
 				queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
-				Queue queue = (Queue) env.lookup("jms/hsadminStatus");
+				Queue queue = queueSession.createQueue(jmsStatusQueue);
 				queueConnection.start();
 				QueueReceiver receiver = queueSession.createReceiver(queue);
 				receiver.setMessageListener(this);
@ -108,29 +88,6 @@ public class QueueStatusReceiverServlet extends HttpServlet
 		}
 	}

-	private void initQueues() throws NamingException {
-		InitialContext ctx = new InitialContext();
-		NamingEnumeration<NameClassPair> list = ctx.list("java:comp/env/jms");
-		Transaction transaction = new Transaction("anonymous");
-		transaction.beginTransaction();
-		EntityManager entityManager = transaction.getEntityManager();
-		while (list.hasMore()) {
-			NameClassPair pair = list.next();
-			String jndiName = pair.getName();
-			if (jndiName != null && jndiName.startsWith("hsadminSystem-")) {
-				QueueTask task = new QueueTask();
-				task.setProcessor(new NullProcessor());
-				entityManager.persist(task);
-				entityManager.flush();
-				String hive = jndiName.substring(14);
-				transaction.enqueue(hive, task);
-			}
-		}
-		transaction.commitTransaction();
-		transaction.close();
-		ctx.close();
-	}
-
 	@Override
 	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
 			throws ServletException, IOException {
@ -159,20 +116,27 @@ public class QueueStatusReceiverServlet extends HttpServlet
 		messageCount++;
 		try {
 			ObjectMessage objMessage = (ObjectMessage) jmsMessage;
-			QueueTask detachedQT = (QueueTask) objMessage.getObject();
-			transaction = new Transaction("statusreceiver");
-			transaction.beginTransaction();
-			EntityManager em = transaction.getEntityManager();
-			em.clear();
-			QueueTask persistentQT = em.find(QueueTask.class, detachedQT.getId());
-			persistentQT.assign(detachedQT);
-			Processor processor = persistentQT.getProcessor();
-			if (processor != null) {
-				processor.finalize(transaction, persistentQT);
+			final Serializable object = objMessage.getObject();
+			if (object != null) {
+				TaskTransfer detachedQT = (TaskTransfer) object;
+				transaction = new Transaction("statusreceiver");
+				transaction.beginTransaction();
+				EntityManager em = transaction.getEntityManager();
+				em.clear();
+				QueueTask persistentQT = em.find(QueueTask.class, detachedQT.getId());
+				persistentQT.assign(detachedQT);
+				Processor processor = persistentQT.getProcessor();
+				if (processor != null) {
+					processor.finalize(transaction, persistentQT);
+				}
+				em.persist(persistentQT);
+				em.flush();
+				transaction.commitTransaction();
+			} else {
+				final String err = "Deserialization failed " + new Date();
+				System.out.println(err);
+				throw new TechnicalException(err);
 			}
-			em.persist(persistentQT);
-			em.flush();
-			transaction.commitTransaction();
 		} catch (Exception e) {
 			errorCount++;
 			if (transaction != null) transaction.rollbackTransaction();
@ -186,7 +150,7 @@ public class QueueStatusReceiverServlet extends HttpServlet
 	public void onException(JMSException exception) {
 		close();
 		try { Thread.sleep(10000); } catch (InterruptedException e) { }
-		try { connect(); } catch (NamingException e) { }
+		connect();
 	}
 	
 }
--- a/hsarback/src/main/webapp/META-INF/context.xml
+++ b/hsarback/src/main/webapp/META-INF/context.xml
@ -5,29 +5,4 @@
 		global="jdbc/HSAdminDB"
 		type="javax.sql.DataSource"/>

-	<ResourceLink
-		name="jms/QueueCF"
-		global="jms/QueueCF"
-		type="javax.jms.QueueConnectionFactory"/>
-
-	<ResourceLink
-		name="jms/hsadminSystem-h99"
-		global="jms/hsadminSystem-h99"
-		type="javax.jms.Queue"/>
-
-	<ResourceLink
-		name="jms/hsadminSystem-testmail"
-		global="jms/hsadminSystem-testmail"
-		type="javax.jms.Queue"/>
-
-	<ResourceLink
-		name="jms/hsadminSystem-testdns"
-		global="jms/hsadminSystem-testdns"
-		type="javax.jms.Queue"/>
-
-	<ResourceLink
-		name="jms/hsadminStatus"
-		global="jms/hsadminStatus"
-		type="javax.jms.Queue"/>
-
 </Context>
--- a/hsarback/src/main/webapp/WEB-INF/web.xml
+++ b/hsarback/src/main/webapp/WEB-INF/web.xml
@ -57,36 +57,5 @@
        <res-auth>Container</res-auth>
    </resource-ref>
         
-    <resource-ref>
-        <res-ref-name>jms/QueueCF</res-ref-name>
-        <res-type>javax.jms.QueueConnectionFactory</res-type>
-        <res-auth>Container</res-auth>
-        <res-sharing-scope>Shareable</res-sharing-scope>
-    </resource-ref>
-         
-    <resource-ref>
-        <res-ref-name>jms/hsadminSystem-h99</res-ref-name>
-        <res-type>javax.jms.Queue</res-type>
-        <res-auth>Container</res-auth>
-        <res-sharing-scope>Shareable</res-sharing-scope>
-    </resource-ref>
-    <resource-ref>
-        <res-ref-name>jms/hsadminSystem-testdns</res-ref-name>
-        <res-type>javax.jms.Queue</res-type>
-        <res-auth>Container</res-auth>
-        <res-sharing-scope>Shareable</res-sharing-scope>
-    </resource-ref>
-    <resource-ref>
-        <res-ref-name>jms/hsadminSystem-testmail</res-ref-name>
-        <res-type>javax.jms.Queue</res-type>
-        <res-auth>Container</res-auth>
-        <res-sharing-scope>Shareable</res-sharing-scope>
-    </resource-ref>
-    <resource-ref>
-        <res-ref-name>jms/hsadminStatus</res-ref-name>
-        <res-type>javax.jms.Queue</res-type>
-        <res-auth>Container</res-auth>
-        <res-sharing-scope>Shareable</res-sharing-scope>
-    </resource-ref>
-         
 </web-app>
+
--- a/qserv/.gitignore
+++ b/qserv/.gitignore
@ -4,4 +4,4 @@
 .classpath
 .project
 .settings/
-
+hsadmin.properties
--- a/qserv/pom.xml
+++ b/qserv/pom.xml
@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>de.hsadmin.core</groupId>
 	<artifactId>hsadmin-qserv</artifactId>
-	<version>4.0.15</version>
+	<version>4.0.16</version>
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>11</java.version>
@ -13,7 +13,7 @@
 		<dependency>
 			<groupId>de.hsadmin.core</groupId>
 			<artifactId>hsadmin-util</artifactId>
-			<version>4.0.15</version>
+			<version>4.0.16</version>
 		</dependency>
 		<dependency>
 			<groupId>commons-lang</groupId>
--- a/qserv/src/main/java/de/hsadmin/core/model/AbstractModuleImpl.java
+++ b/qserv/src/main/java/de/hsadmin/core/model/AbstractModuleImpl.java
@ -14,6 +14,7 @@ import de.hsadmin.core.qserv.EntityProcessorFactory;
 import de.hsadmin.core.qserv.NullProcessor;
 import de.hsadmin.core.qserv.Processor;
 import de.hsadmin.core.qserv.QueueTask;
+import de.hsadmin.core.qserv.TaskTransfer;
 import de.hsadmin.core.util.HSAdminException;
 import de.hsadmin.mods.user.UnixUser;

@ -199,8 +200,10 @@ public abstract class AbstractModuleImpl implements ModuleInterface {
 		StringBuilder details = new StringBuilder();
 		String title = entityTypeName + " (" + entity.createStringKey() + ") " + action;
 		QueueTask task = new QueueTask(user, title, details.toString(), proc);
-		transaction.getEntityManager().persist(task);
-		transaction.enqueue(entity.getHiveName(), task);
+		final EntityManager entityManager = transaction.getEntityManager();
+		entityManager.persist(task);
+		entityManager.refresh(task);
+		transaction.enqueue(entity.getHiveName(), TaskTransfer.getTransferObject(task));
 	}

 	public String toString(StackTraceElement[] stackTrace) {
--- a/qserv/src/main/java/de/hsadmin/core/model/Transaction.java
+++ b/qserv/src/main/java/de/hsadmin/core/model/Transaction.java
@ -6,11 +6,11 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;

+import javax.jms.JMSException;
 import javax.jms.Queue;
+import javax.jms.QueueConnection;
 import javax.jms.QueueConnectionFactory;
-import javax.naming.Context;
-import javax.naming.InitialContext;
-import javax.naming.NamingException;
+import javax.jms.QueueSession;
 import javax.persistence.EntityManager;
 import javax.persistence.EntityTransaction;
 import javax.persistence.Query;
@ -19,7 +19,7 @@ import org.apache.activemq.ActiveMQConnectionFactory;
 import org.apache.openjpa.persistence.OpenJPAEntityManager;

 import de.hsadmin.core.qserv.QueueClient;
-import de.hsadmin.core.qserv.QueueTask;
+import de.hsadmin.core.qserv.TaskTransfer;
 import de.hsadmin.core.util.Config;
 import de.hsadmin.mods.cust.Customer;
 import de.hsadmin.mods.pac.Pac;
@ -32,24 +32,23 @@ public class Transaction {
 	private String loginName;
 	private Map<String, QueueTaskStore> taskStores;
 	private boolean transactionActive;
-	private InitialContext ctx;
+	private Config config;
+	private String jmsServerUrl;
+	private String jmsUsername;
+	private String jmsPassword;
 	
 	public Transaction(String loginName) {
+		this.config = Config.getInstance();
+		this.jmsServerUrl = config.getProperty("hsadmin.jms.url", "tcp://localhost:61616");
+		this.jmsUsername = config.getProperty("hsadmin.jms.username", "hsar");
+		this.jmsPassword = config.getProperty("hsadmin.jms.password", "default");
 		this.transactionActive = false;
 		this.entityManager = PersistenceManager.getEntityManager("hsadmin");
 		this.loginName = loginName;
 		this.taskStores = new HashMap<String, QueueTaskStore>();
-		try {
-			ctx = new InitialContext();
-			Context env = (Context) ctx.lookup("java:comp/env");
-			queueConnectionFactory = (QueueConnectionFactory) env.lookup("jms/QueueCF");
-			if (queueConnectionFactory instanceof ActiveMQConnectionFactory) {
-				ActiveMQConnectionFactory activeMQconnectionFatory = (ActiveMQConnectionFactory) queueConnectionFactory;
-				activeMQconnectionFatory.setTrustAllPackages(true);
-			}
-		} catch (NamingException e) {
-			throw new TechnicalException("no jms queue: jms/QueueCF",  e);
-		}
+		final ActiveMQConnectionFactory mqConnectionFactory = new ActiveMQConnectionFactory(jmsServerUrl);
+		mqConnectionFactory.setTrustAllPackages(true);
+		this.queueConnectionFactory = mqConnectionFactory;
 	}

 	public EntityManager getEntityManager() {
@ -61,15 +60,14 @@ public class Transaction {
 	}
 	
 	public Queue lookupJMSQueue(String queueName) {
-		if (ctx != null) {
-			try {
-				Context env = (Context) ctx.lookup("java:comp/env");
-				return (Queue) env.lookup("jms/" + queueName);
-			} catch (NamingException e) {
-				throw new TechnicalException("no jms queue: jms/" + queueName, e);
-			}
+		try {
+			final QueueConnection queueConnection = queueConnectionFactory.createQueueConnection(jmsUsername, jmsPassword);
+			final QueueSession session = queueConnection.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
+			final Queue queue = session.createQueue(queueName);
+			return queue;
+		} catch (JMSException e) {
+			throw new TechnicalException("no jms queue: jms/" + queueName, e);
 		}
-		return null;
 	}

 	public String getLoginName() {
@ -79,7 +77,7 @@ public class Transaction {
 		throw new TechnicalException("no login");
 	}

-	public void enqueue(String hiveName, QueueTask task) {
+	public void enqueue(String hiveName, TaskTransfer task) {
 		QueueTaskStore taskStore = taskStores.get(hiveName);
 		if (taskStore == null) {
 			taskStore = new QueueTaskStore();
@ -96,8 +94,8 @@ public class Transaction {
 			QueueClient qClient = null;
 			try {
 				qClient = new QueueClient(queueConnectionFactory, jmsSystemQueue);
-				for (QueueTask task : store.getTasks()) {
-					qClient.send(task);
+				for (TaskTransfer taskTransfer : store.getTasks()) {
+					qClient.send(taskTransfer);
 				}
 			} catch (Exception e) {
 				throw new TechnicalException(e);
@ -151,7 +149,7 @@ public class Transaction {
 	}

 	/**
-	 * Detach entities from hibernate session. 
+	 * Detach entities from JPA session. 
 	 * Used to detach entities before update. Makes it possible to compare
 	 * old and new attribute values. 
 	 */
@ -163,17 +161,17 @@ public class Transaction {
 	}

 	class QueueTaskStore {
-		private List<QueueTask> taskList;
+		private List<TaskTransfer> taskList;
 		QueueTaskStore() {
-			taskList = new ArrayList<QueueTask>();
+			taskList = new ArrayList<TaskTransfer>();
 		}
 		public void clear() {
-			taskList = new ArrayList<QueueTask>();
+			taskList = new ArrayList<TaskTransfer>();
 		}
-		void add(QueueTask t) {
+		void add(TaskTransfer t) {
 			taskList.add(t);
 		}
-		Iterable<QueueTask> getTasks() {
+		Iterable<TaskTransfer> getTasks() {
 			return taskList;
 		}
 	}
--- a/qserv/src/main/java/de/hsadmin/core/qserv/AbstractProcessor.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/AbstractProcessor.java
@ -14,4 +14,9 @@ abstract public class AbstractProcessor implements Processor {
 		task.done();
 	}

+	@Override
+	public String toString() {
+		return "a Processor of class " + this.getClass().getCanonicalName();
+	}
+	
 }
--- a/qserv/src/main/java/de/hsadmin/core/qserv/NullProcessor.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/NullProcessor.java
@ -3,7 +3,7 @@ package de.hsadmin.core.qserv;

 public class NullProcessor extends AbstractProcessor {

-	private static final long serialVersionUID = 1L;
+	private static final long serialVersionUID = -3667951484545665538L;

 	@Override
 	public Object process() throws ProcessorException {
--- a/qserv/src/main/java/de/hsadmin/core/qserv/QueueClient.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/QueueClient.java
@ -18,7 +18,7 @@ import de.hsadmin.core.util.Config;
 * 
 * @author mi
 */
-public class QueueClient extends QueueCommons {
+public class QueueClient {
 	
 	private QueueConnectionFactory jmsConnectionFactory;
 	private Queue jmsSystemQueue;
@ -36,11 +36,11 @@ public class QueueClient extends QueueCommons {
 		String jmsUser = config.getProperty("hsadmin.jms.username", "hsadmin");
 		String jmsPass = config.getProperty("hsadmin.jms.password", "hsadmin-pw");
 		jmsConnection = jmsConnectionFactory.createQueueConnection(jmsUser, jmsPass);
-		jmsSession = jmsConnection.createQueueSession(DEFAULT, Session.AUTO_ACKNOWLEDGE);
+		jmsSession = jmsConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
 		jmsSender = jmsSession.createSender(jmsSystemQueue);
 	}

-	public void send(QueueTask task) throws ProcessorException {
+	public void send(TaskTransfer task) throws ProcessorException {
 		try {
 			ObjectMessage jmsMessage = jmsSession.createObjectMessage(task);
 			jmsSender.send(jmsMessage);
--- a/qserv/src/main/java/de/hsadmin/core/qserv/QueueCommons.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/QueueCommons.java
@ -1,14 +0,0 @@
-package de.hsadmin.core.qserv;
-
-public class QueueCommons
-{
-	protected static final boolean TRANSACTED = true;
-	protected static final boolean IMMEDIATE = false;
-	protected static final boolean DEFAULT = IMMEDIATE;
-
-	public QueueCommons()
-	{
-		super();
-	}
-
-}
--- a/qserv/src/main/java/de/hsadmin/core/qserv/QueueServer.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/QueueServer.java
@ -1,13 +1,8 @@
 package de.hsadmin.core.qserv;

-import java.io.File;
-import java.io.FileInputStream;
-import java.util.Properties;
 import java.util.logging.Level;
 import java.util.logging.Logger;

-import javax.jms.Connection;
-import javax.jms.Destination;
 import javax.jms.ExceptionListener;
 import javax.jms.JMSException;
 import javax.jms.Message;
@ -16,68 +11,49 @@ import javax.jms.MessageProducer;
 import javax.jms.ObjectMessage;
 import javax.jms.Queue;
 import javax.jms.QueueConnection;
-import javax.jms.QueueConnectionFactory;
 import javax.jms.QueueReceiver;
 import javax.jms.QueueSession;
-import javax.jms.Session;
-import javax.naming.Context;
-import javax.naming.InitialContext;

 import org.apache.activemq.ActiveMQConnectionFactory;

-public class QueueServer extends QueueCommons implements MessageListener, ExceptionListener {
+import de.hsadmin.core.util.Config;

-	private static final String VERSION_NO = "4.0.11";
+public class QueueServer implements MessageListener, ExceptionListener {
+	
+	private static final String VERSION_NO = "4.0.16";
 	
 	private Logger logger;
-	private QueueConnection conn;
-	private QueueSession queueSession;
-	private String jmsStatusQueue;
-	private String jmsPassWord;
-	private String jmsUserName;
+
+	private String jmsUrl;
+	private String jmsUsername;
+	private String jmsPassword;
 	private String jmsSystemQueue;
-	private String jmsFactory;
+	private String jmsStatusQueue;
 	private String serviceEMail;
 	private String fromEMail;

+	private QueueConnection queueConnection;
+
 	/** 
 	 * Runs the QueueServer, using the arguments as ConnectionFactory 
 	 * and Topic names. 
 	 */
 	public static void main(String[] args) throws Exception {
-		File propFile = new File(System.getProperty("user.dir"), "conf/qserv.properties");
-		if (args.length == 1) {
-			propFile = new File(args[0]);
-		} else {
-			if (args.length != 0) {
-				throw new Exception(userHelp(propFile));
-			}
-		}
-		FileInputStream propStream = null;
-		try {
-			propStream = new FileInputStream(propFile);
-		} catch (Exception e) {
-			System.out.println("couldn't read config file " + propFile.getAbsolutePath());
-			System.exit(1);
-		}
-		Properties props = new Properties(System.getProperties());
-		props.load(propStream);
-		propStream.close();
-		System.setProperty("java.util.logging.config.file", props.getProperty("hsadmin.log.config", System.getProperty("user.home") + "/.hsadmin.log.properties"));
+		final Config config = Config.getInstance();
+		System.setProperty("java.util.logging.config.file", config.getProperty("hsadmin.log.config", System.getProperty("user.home") + "/.hsadmin.log.properties"));
 		final QueueServer qServ = new QueueServer();
-		qServ.setJmsFactory(props.getProperty("hsadmin.jms.factory"));
-		qServ.setJmsSystemQueue(props.getProperty("hsadmin.jms.system-queue"));
-		qServ.setJmsStatusQueue(props.getProperty("hsadmin.jms.status-queue"));
-		qServ.setJmsUserName(props.getProperty("hsadmin.jms.username"));
-		qServ.setJmsPassWord(props.getProperty("hsadmin.jms.password"));
-		qServ.setServiceEMail(props.getProperty("hsadmin.log.email"));
-		qServ.setFromEMail(props.getProperty("hsadmin.log.from"));
+		qServ.setJmsURL(config.getProperty("hsadmin.jms.url"));
+		qServ.setJmsSystemQueue(config.getProperty("hsadmin.jms.system-queue"));
+		qServ.setJmsStatusQueue(config.getProperty("hsadmin.jms.status-queue"));
+		qServ.setJmsUserName(config.getProperty("hsadmin.jms.username"));
+		qServ.setJmsPassWord(config.getProperty("hsadmin.jms.password"));
+		qServ.setServiceEMail(config.getProperty("hsadmin.log.email"));
+		qServ.setFromEMail(config.getProperty("hsadmin.log.from"));
 		Logger logger = Logger.getLogger("de.hsadmin.core.qserv");
 		logger.log(Level.CONFIG, "hsadmin-qserv " + VERSION_NO + " started using:" 
-		 + "\nqueue server: " + props.getProperty("hsadmin.jms.factory")
-		 + "\nsystem queue: " + props.getProperty("hsadmin.jms.system-queue")
-		 + "\nstatus queue: " + props.getProperty("hsadmin.jms.status-queue")
-		 + "\nqueue user:   " + props.getProperty("hsadmin.jms.username"));
+		 + "\nsystem queue: " + config.getProperty("hsadmin.jms.system-queue")
+		 + "\nstatus queue: " + config.getProperty("hsadmin.jms.status-queue")
+		 + "\nqueue user:   " + config.getProperty("hsadmin.jms.username"));
 		Runtime.getRuntime().addShutdownHook(new Thread() {
 			@Override
 			public void run() {
@ -92,18 +68,14 @@ public class QueueServer extends QueueCommons implements MessageListener, Except
 		}
 	}

-	private static String userHelp(File propFile) {
-		return "Wrong number of arguments.\n"
-				+ "With no arguments '"
-				+ propFile
-				+ "' will be used as config file.\n"
-				+ "Or give a properties file as single argument.\n\n"
-				+ "Example config file:\n\n"
-				+ "hsadmin.jms.factory=QueueCF\n"
-				+ "hsadmin.jms.system-queue=hive-h01\n"
-				+ "hsadmin.jms.status-queue=queue/hsadminStatus\n"
-				+ "hsadmin.jms.username=hive-h01\n"
-				+ "hsadmin.jms.password=geheimeskennwort\n";
+	protected void close() {
+		if (queueConnection != null) {
+			try {
+				queueConnection.close();
+			} catch (JMSException e) {
+				logger.log(Level.SEVERE, e.getMessage());
+			}
+		}
 	}

 	public QueueServer() {
@ -127,20 +99,15 @@ public class QueueServer extends QueueCommons implements MessageListener, Except
 	}

 	private boolean connect() {
-		// create JMS connection and session
 		try {
-			Context ctx = new InitialContext();
-			QueueConnectionFactory connectionFactory = (QueueConnectionFactory) ctx.lookup(jmsFactory);
-			if (connectionFactory instanceof ActiveMQConnectionFactory) {
-				ActiveMQConnectionFactory activeMQConnectionFactory = (ActiveMQConnectionFactory) connectionFactory;
-				activeMQConnectionFactory.setTrustAllPackages(true);
-			}
-			conn = connectionFactory.createQueueConnection(jmsUserName, jmsPassWord);
-			conn.setExceptionListener(this);
-			queueSession = conn.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
-			Queue queue = (Queue) ctx.lookup(jmsSystemQueue);
-			conn.start();
-			QueueReceiver receiver = queueSession.createReceiver(queue);
+			final ActiveMQConnectionFactory mqConnectionFactory = new ActiveMQConnectionFactory(jmsUrl);
+			mqConnectionFactory.setTrustAllPackages(true);
+			queueConnection = mqConnectionFactory.createQueueConnection(jmsUsername, jmsPassword);
+			queueConnection.setExceptionListener(this);
+			final QueueSession session = queueConnection.createQueueSession(false, QueueSession.CLIENT_ACKNOWLEDGE);
+			Queue queue = session.createQueue(jmsSystemQueue);
+			queueConnection.start();
+			final QueueReceiver receiver = session.createReceiver(queue);
 			receiver.setMessageListener(this);
 			return true;
 		} catch (Exception e) {
@ -151,10 +118,10 @@ public class QueueServer extends QueueCommons implements MessageListener, Except
 	
 	public synchronized void onMessage(Message jmsMessage) {
 		logger.log(Level.INFO, jmsMessage.toString());
-		QueueTask task = null;
+		TaskTransfer task = null;
 		try {
 			ObjectMessage jmsObjectMessage = (ObjectMessage) jmsMessage;
-			task = (QueueTask) jmsObjectMessage.getObject();
+			task = (TaskTransfer) jmsObjectMessage.getObject();
 			Processor processor = task.getProcessor();
 			logger.log(Level.INFO, "processing (" + task.getTitle() + " | started("
 					+ task.getStarted() + ") |" + task.getDetails() + "|"
@ -164,12 +131,12 @@ public class QueueServer extends QueueCommons implements MessageListener, Except
 				logger.log(Level.INFO, "done");
 			} catch (ProcessorException e) {
 				logException(e);
-				task.setException(e);
+				task.setException(e.getMessage());
 				SmtpHelper.send(fromEMail, serviceEMail, jmsSystemQueue, processor.logInfo());
 			}
 		} catch (Throwable throwable) {
 			logException(throwable);
-			task.setException(throwable);
+			task.setException(throwable.getMessage());
 		} finally {
 			sendStatus(task);
 			notifyAll();
@ -187,7 +154,6 @@ public class QueueServer extends QueueCommons implements MessageListener, Except
 	@Override
 	public void onException(JMSException e) {
 		logger.log(Level.WARNING, e.getMessage(), e);
-		close();
 		while (!connect()) {
 			try {
 				Thread.sleep(10000);
@ -195,67 +161,44 @@ public class QueueServer extends QueueCommons implements MessageListener, Except
 		}
 	}

-	public void close() {
-		if (queueSession != null) {
-			try {
-				queueSession.close();
-			} catch (JMSException e1) { }
-		}
-		if (conn != null) {
-			try {
-				conn.close();
-			} catch (JMSException e1) { }
-		}
-	}
-
-	protected void sendStatus(QueueTask queueMessage) {
+	protected void sendStatus(TaskTransfer queueMessage) {
+		final ActiveMQConnectionFactory mqConnectionFactory = new ActiveMQConnectionFactory(jmsUrl);
+		mqConnectionFactory.setTrustAllPackages(true);
 		MessageProducer producer = null;
-		Session statusSession = null;
-		Connection statusConnection = null;
-		try {
-			logger.log(Level.INFO, "sendStatus(" + queueMessage + ")");
-			Context ctx = new InitialContext();
-			QueueConnectionFactory connectionFactory = (QueueConnectionFactory) ctx.lookup(jmsFactory);
-			if (connectionFactory instanceof ActiveMQConnectionFactory) {
-				ActiveMQConnectionFactory activeMQConnectionFactory = (ActiveMQConnectionFactory) connectionFactory;
-				activeMQConnectionFactory.setTrustAllPackages(true);
-			}
-			Destination queue = (Destination) ctx.lookup(jmsStatusQueue);
-			statusConnection = connectionFactory.createConnection(jmsUserName, jmsPassWord);
-			statusSession = statusConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
-			producer = statusSession.createProducer(queue);
-			ObjectMessage statusMessage = statusSession.createObjectMessage(queueMessage);
+		QueueSession session = null;
+		try (QueueConnection queueConnection = mqConnectionFactory.createQueueConnection(jmsUsername, jmsPassword)) {
+			queueConnection.setExceptionListener(this);
+			session = queueConnection.createQueueSession(false, QueueSession.CLIENT_ACKNOWLEDGE);
+			final Queue queue = session.createQueue(jmsStatusQueue);
+			queueConnection.start();
+			producer  = session.createProducer(queue);
+			final ObjectMessage statusMessage = session.createObjectMessage(queueMessage);
 			logger.log(Level.INFO, "send(" + statusMessage + ")");
 			producer.send(statusMessage);
 		} catch (Exception statusException) {
 			logger.log(Level.SEVERE, statusException.getMessage(), statusException);
-		} finally {
-			// close JMS
-			try { producer.close(); } catch (Exception exc) { }
-			try { statusSession.close(); } catch (Exception exc) { }
-			try { statusConnection.close(); } catch (Exception exc) { }
 		}
 	
 	}

-	public void setJmsStatusQueue(String property) {
-		jmsStatusQueue = property;
+	private void setJmsURL(String property) {
+		jmsUrl = property;
 	}

 	public void setJmsPassWord(String property) {
-		jmsPassWord = property;
+		jmsPassword = property;
 	}

 	public void setJmsUserName(String property) {
-		jmsUserName = property;
+		jmsUsername = property;
 	}

 	public void setJmsSystemQueue(String property) {
 		jmsSystemQueue = property;
 	}

-	public void setJmsFactory(String property) {
-		jmsFactory = property;
+	public void setJmsStatusQueue(String property) {
+		jmsStatusQueue = property;
 	}

 }
--- a/qserv/src/main/java/de/hsadmin/core/qserv/QueueTask.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/QueueTask.java
@ -223,14 +223,13 @@ public class QueueTask extends AbstractEntity implements Serializable {
 	 * assigns all data field of qt to this instance, with 
 	 * the exception of the id
 	 */
-	public void assign(QueueTask qt) {
-		this.user = qt.user;
-		this.title = qt.title;
-		this.details = qt.details;
-		this.started = qt.started;
-		this.finished = qt.finished;
-		this.proc = qt.proc;
-		this.exception = qt.exception;
+	public void assign(TaskTransfer qt) {
+		this.title = qt.getTitle();
+		this.details = qt.getDetails();
+		this.started = qt.getStarted();
+		this.finished = qt.getFinished();
+		this.proc = qt.getProcessor();
+		this.exception = qt.getException();
 	}

 	@Override
--- a/qserv/src/main/java/de/hsadmin/core/qserv/ShellProcessor.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/ShellProcessor.java
@ -8,7 +8,7 @@ package de.hsadmin.core.qserv;
 */
 public class ShellProcessor extends AbstractProcessor {

-	private static final long serialVersionUID = 1L;
+	private static final long serialVersionUID = -8340381162948081669L;
 	
 	private String aSystemCall;
 	private String aInput;
--- a/qserv/src/main/java/de/hsadmin/core/qserv/TaskTransfer.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/TaskTransfer.java
@ -0,0 +1,130 @@
+package de.hsadmin.core.qserv;
+
+import java.io.Serializable;
+import java.util.Date;
+
+import de.hsadmin.mods.user.UnixUser;
+
+public class TaskTransfer implements Serializable {
+
+	private static final long serialVersionUID = -2120247737335542484L;
+
+	private long id;
+	private String unixuser;
+	private Date started;
+	private Date finished;
+	private String title;
+	private String details;
+	private Processor proc;
+	private String exception;
+	
+	public TaskTransfer() {
+		id = 0L;
+		unixuser = "anonymous";
+		started = new Date();
+		finished = null;
+		title = "untitled";
+		details = "none";
+		setProcessor(new NullProcessor());
+		setException("");
+	}
+	
+	public TaskTransfer(long id, String unixuser, Date started, Date finished, String title, String details, Processor proc, String exception) {
+		this.id = id;
+		this.unixuser = unixuser;
+		this.started = started;
+		this.finished = finished;
+		this.title = title;
+		this.details = details;
+		this.setProcessor(proc);
+		this.setException(exception);
+	}
+	
+	public long getId() {
+		return id;
+	}
+	
+	public void setId(long id) {
+		this.id = id;
+	}
+
+	public String getUnixuser() {
+		return unixuser;
+	}
+
+	public void setUnixuser(String unixuser) {
+		this.unixuser = unixuser;
+	}
+
+	public Date getStarted() {
+		return started;
+	}
+
+	public void setStarted(Date started) {
+		this.started = started;
+	}
+
+	public Date getFinished() {
+		return finished;
+	}
+
+	public void setFinished(Date finished) {
+		this.finished = finished;
+	}
+
+	public String getTitle() {
+		return title;
+	}
+
+	public void setTitle(String title) {
+		this.title = title;
+	}
+
+	public String getDetails() {
+		return details;
+	}
+
+	public void setDetails(String details) {
+		this.details = details;
+	}
+
+	public Processor getProcessor() {
+		return proc;
+	}
+
+	public void setProcessor(Processor proc) {
+		this.proc = proc;
+	}
+
+	public String getException() {
+		return exception;
+	}
+
+	public void setException(String exception) {
+		this.exception = exception;
+	}
+	
+	@Override
+	public String toString() {
+		return Long.toString(id) + "|" + title + "|" + started.toString();
+	}
+
+	public static TaskTransfer getTransferObject(QueueTask task) {
+		long id = task.getId();
+		final UnixUser user = task.getUser();
+		String username = "anonymous";
+		if (user == null) {
+			username = "anonymous";
+		} else {
+			username = user.getName();
+		}
+		Date started = task.getStarted();
+		Date finished = task.getFinished();
+		String title = task.getTitle();
+		String details = task.getDetails();
+		Processor proc = task.getProcessor();
+		String exception = task.getException();
+		return new TaskTransfer(id, username, started, finished, title, details, proc, exception);
+	}
+
+}
--- a/qserv/src/main/java/de/hsadmin/core/qserv/WaitingTasksProcessor.java
+++ b/qserv/src/main/java/de/hsadmin/core/qserv/WaitingTasksProcessor.java
@ -4,6 +4,8 @@ import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;

+import javax.persistence.EntityManager;
+
 import de.hsadmin.core.model.Transaction;

 public class WaitingTasksProcessor extends AbstractProcessor {
@ -29,8 +31,10 @@ public class WaitingTasksProcessor extends AbstractProcessor {
 			for (WaitingProcessor p : waitingTasks) {
 				QueueTask wTask = 
 					new QueueTask(task.getUser(), task.getTitle() + " / " + p.getTitle(), task.getTitle() + " / " + p.getTitle(), p.getProc());
-				transaction.getEntityManager().persist(wTask);
-				transaction.enqueue(p.getHost(), wTask);
+				final EntityManager entityManager = transaction.getEntityManager();
+				entityManager.persist(wTask);
+				entityManager.refresh(wTask);
+				transaction.enqueue(p.getHost(), TaskTransfer.getTransferObject(wTask));
 			}
 		}
 		super.finalize(transaction, task);
--- a/util/pom.xml
+++ b/util/pom.xml
@ -4,7 +4,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>de.hsadmin.core</groupId>
 	<artifactId>hsadmin-util</artifactId>
-	<version>4.0.15</version>
+	<version>4.0.16</version>
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>11</java.version>