Is it possible to lookup and use UserTransaction from a remote-client as
in AS 4?
I followed this document and connected from outside the server: Remote EJB invocations via JNDI - EJB client API or remote-naming project - WildFly 8 - Project Documentation Editor.
Here is the code that I used in AS 4, which failed in WildFly
Eg:
public void beginTransaction() {
try {
ut = (UserTransaction) getCtx().lookup("UserTransaction");
ut.begin();
} catch (Exception ex) {
throw new RuntimeException("Failed to begin UserTransactiion", ex);
}
}
Then I got this error:
Caused by: javax.naming.NameNotFoundException: UserTransaction -- service jboss.naming.context.java.jboss.exported.UserTransaction
Thanks!
It's now deprecated. Better use:
UserTransaction ut = RemoteTransactionContext.getInstance().getUserTransaction();
Related
i have to deploy a multi-module application in ear on Liberty Server 20 in my Eclipse. This application use hibernate as provider jpa2 and Derby client + driver derby-10.12.1.1.jar(as shared fileset). Persistence.xml is configured with non jta.
This is server.xml:
<enterpriseApplication id="rubrica-ear" location="rubrica-ear.ear" name="rubrica-ear"/>
<dataSource jndiName="jdbc/TestappDS" type="javax.sql.ConnectionPoolDataSource">
<properties.derby.client createDatabase="false" databaseName=".rubrica"></properties.derby.client>
<jdbcDriver>
<library>
<fileset dir="C:\programmiMio\java-eclipse\drivers" id="shared"></fileset>
</library>
</jdbcDriver>
</dataSource>
My .rubrica db location is in /usr/home.
Because I dont want to start a server derby on console but automatically, i do taht in a #WebListener class:
#WebListener
public class ReqListener implements ServletContextListener {
static final Logger log = LoggerFactory.getLogger(ReqListener.class);
PrintWriter pw = new PrintWriter(System.out);
private NetworkServerControl derbyserver;
#Override
public void contextInitialized(ServletContextEvent arg0) {
try {
String userHomeDir = System.getProperty("user.home", ".");
String systemDir = userHomeDir + "/.rubrica";
// Set the db system directory and startup Server Derby for incoming connections.
System.setProperty("derby.system.home", systemDir);//il db viene salvato qui
derbyserver = new NetworkServerControl(InetAddress.getByName("localhost"), 1527);
derbyserver.start(pw);
log.info("Apache derby settings ok");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
log.error(e.getMessage());
}
}
#Override
public void contextDestroyed(ServletContextEvent arg0) {
if (derbyserver!=null){
...
}
}
When i deploy i get this error
[ERROR] An error occurred in the org.hibernate.ejb.HibernatePersistence persistence provider when attempting to create the entity manager factory of the testapp persistence unit container. The following error occurred: java.lang.NullPointerException
at org.hibernate.engine.jdbc.spi.TypeInfo.extractTypeInfo(TypeInfo.java:128)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:163)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1887)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1845)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:857)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:850)
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:425)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:849)
at org.hibernate.jpa.HibernatePersistenceProvider.createContainerEntityManagerFactory(HibernatePersistenceProvider.java:152)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:67)
at com.ibm.ws.jpa.management.JPAPUnitInfo.createEMFactory(JPAPUnitInfo.java:919)
at [internal classes]
When I debug on Liberty i see that Hibernate classes running before the #WebListener code (this is not the same thing in Tomcat), how can i resolve this issue? Something about class loading settings?
I try derby Embedded instead, but problem still araise again, in server.xml:
<properties.derby.embedded createDatabase="create" databaseName="C:/Users/myuser/.rubrica" shutdownDatabase="false"/>
<jdbcDriver>
<library>
<fileset dir="C:\programmiMio\java-eclipse\drivers" id="shared-libs"/>
</library>
</jdbcDriver>
Thanks
Roberto
Im trying to connect to Kafka with JMS. I followed this guide to use the Payara Kafka Connector. This worked on Wildfly. But I cant get it to work on OpenLiberty.
The server.xml:
<resourceAdapter id="kafkajmsra" location="${shared.resource.dir}kafka-rar-0.5.0.rar"/>
<jmsTopicConnectionFactory jndiName="JMSTopicFactory">
<properties.kafkajmsra
bootstrapServerConfig="kafka:9092"/>
</jmsTopicConnectionFactory>
<jmsTopic id="kafkaTopic" jndiName="JmsTopic">
<properties.kafkajmsra topicName="demoTopic" />
</jmsTopic>
With those configurations I get a NullPointerException if I try to inject those components. The JNDI names can be found but not with these parameters.
#Resource(lookup = "JMSTopicFactory")
private TopicConnectionFactory jmsTopicFactory;
#Resource(lookup = "JMSTopic")
private Topic jmsTopic;
Am I missing something in the server.xml?
I tried using the default JMS Connector. It does connect to Kafka, but the connection gets refused and on the kafka side it tells me this:
[2020-05-31 20:05:27,134] WARN [SocketServer brokerId=1] Unexpected error from /172.20.0.4; closing connection (org.apache.kafka.common.network.Selector)
org.apache.kafka.common.network.InvalidReceiveException: Invalid receive (size = -1091633152)
at org.apache.kafka.common.network.NetworkReceive.readFrom(NetworkReceive.java:103)
at org.apache.kafka.common.network.KafkaChannel.receive(KafkaChannel.java:448)
at org.apache.kafka.common.network.KafkaChannel.read(KafkaChannel.java:398)
at org.apache.kafka.common.network.Selector.attemptRead(Selector.java:678)
at org.apache.kafka.common.network.Selector.pollSelectionKeys(Selector.java:580)
at org.apache.kafka.common.network.Selector.poll(Selector.java:485)
at kafka.network.Processor.poll(SocketServer.scala:893)
at kafka.network.Processor.run(SocketServer.scala:792)
at java.lang.Thread.run(Thread.java:748)
EDIT:
I changed the server.xml to look like this now:
<resourceAdapter id="kafkajmsra" location="${shared.resource.dir}/kafka-rar-0.4.0.rar"/>
<connectionFactory jndi="java:app/KafkaConnectionFactory"
interfaceName="fish.payara.cloud.connectors.kafka.api.KafkaConnectionFactory"
resourceAdapter="liberty/wlp/usr/shared/resources/kafka-rar-0.4.0.rar">
</connectionFactory>
and the java code looks like this:
#ApplicationScoped
public class TopicProducer {
private static final Logger LOG = LoggerFactory.getLogger(TopicProducer.class);
public TopicProducer() throws Exception {
LOG.info("Starting TopicProducer");
}
#Resource(lookup = "java:app/KafkaConnectionFactory")
KafkaConnectionFactory kafkaConnectionFactory;
public void send(final String msg) {
try (KafkaConnection connection = kafkaConnectionFactory.createConnection()) {
LOG.info("Send message: {}", msg);
connection.send(new ProducerRecord("demoTopic", msg));
} catch (Exception e) {
LOG.error(e.getMessage(), e);
}
}
}
But now I get a NullPointerException on the #Resource. My guess is that the resource adapter cannot be found.
I have deployed an EJB in Jboss As 7.0.
Following is what the deployment logs says about the JNDI binding of EJB.
19:21:43,269 INFO
[org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor]
(MSC service thread 1-1) JNDI bindings for session bean named
ManageEmployeeBean in deployment unit deployment "EJBTest1.jar" are as
follows:
java:global/EJBTest1/ManageEmployeeBean!com.test.ejb.businessimpl.ManageEmployeeBeanRemote
java:app/EJBTest1/ManageEmployeeBean!com.test.ejb.businessimpl.ManageEmployeeBeanRemote
java:module/ManageEmployeeBean!com.test.ejb.businessimpl.ManageEmployeeBeanRemote
java:jboss/exported/EJBTest1/ManageEmployeeBean!com.test.ejb.businessimpl.ManageEmployeeBeanRemote
java:global/EJBTest1/ManageEmployeeBean
java:app/EJBTest1/ManageEmployeeBean java:module/ManageEmployeeBean
This is how my client class looks like.
package com.test.ejb.test;
import java.util.Hashtable;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import com.test.ejb.bean.Employee;
import com.test.ejb.businessimpl.ManageEmployeeBean;
import com.test.ejb.businessimpl.ManageEmployeeBeanRemote;
public class Client {
private static InitialContext initialContext;
public static void main(String[] args){
try {
getInitialContext();
System.out.println("CTX:"+initialContext);
} catch (NamingException e) {
e.printStackTrace();
}
try {
System.out.println("Looking up EJB !!");
ManageEmployeeBeanRemote remote =
(ManageEmployeeBeanRemote)initialContext.lookup("/EJBTest1/ManageEmployeeBean!com.test.ejb.businessimpl.ManageEmployeeBeanRemote");
System.out.println("setting employee..............");
Employee employee = new Employee();
employee.setFirstName("Renjith");
employee.setLastName("Ravi");
System.out.println("Adding employee");
remote.addEmployee(employee);
} catch (NamingException e) {
e.printStackTrace();
}
}
public static InitialContext getInitialContext() throws NamingException {
if (initialContext == null) {
Properties prop = new Properties();
prop.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
prop.put(Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces");
prop.put(Context.PROVIDER_URL, "remote://localhost:4447");
prop.put(Context.SECURITY_PRINCIPAL, "renjith");
prop.put(Context.SECURITY_CREDENTIALS, "user");
initialContext = new InitialContext(prop);
}
return initialContext;
}
}
Client is not able to find the service when I run it.
CTX:javax.naming.InitialContext#40964823
Looking up EJB !!
javax.naming.CommunicationException: Could not obtain connection to any of these urls: remote://localhost:4447 and discovery failed with error: javax.naming.CommunicationException: Receive timed out [Root exception is java.net.SocketTimeoutException: Receive timed out] [Root exception is javax.naming.CommunicationException: Failed to connect to server remote:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server remote:1099 [Root exception is java.net.UnknownHostException: remote: Name or service not known]]]
at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1416)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:596)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:589)
at javax.naming.InitialContext.lookup(InitialContext.java:411)
at com.test.ejb.test.Client.main(Client.java:29)
Caused by: javax.naming.CommunicationException: Failed to connect to server remote:1099 [Root exception is javax.naming.ServiceUnavailableException: Failed to connect to server remote:1099 [Root exception is java.net.UnknownHostException: remote: Name or service not known]]
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:269)
at org.jnp.interfaces.NamingContext.checkRef(NamingContext.java:1387)
... 4 more
Caused by: javax.naming.ServiceUnavailableException: Failed to connect to server remote:1099 [Root exception is java.net.UnknownHostException: remote: Name or service not known]
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:243)
... 5 more
Caused by: java.net.UnknownHostException: remote: Name or service not known
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1293)
at java.net.InetAddress.getAllByName0(InetAddress.java:1246)
at java.net.InetAddress.getAllByName(InetAddress.java:1162)
at java.net.InetAddress.getAllByName(InetAddress.java:1098)
at java.net.InetAddress.getByName(InetAddress.java:1048)
at org.jnp.interfaces.TimedSocketFactory.createSocket(TimedSocketFactory.java:76)
at org.jnp.interfaces.NamingContext.getServer(NamingContext.java:239)
... 5 more
Can anyone tell me what am i missing here?
I saw lots of threads on similar topic in stackoverflow, but none of them helped me!!
You are attempting to use the EJB Remote client from JBoss AS 5 (or earlier).
You need to use the JBoss AS 7 EJB Remote client and configure it as per the documentation at AS7 JNDI Reference under the Remote JNDI heading.
I am trying to execute one RMI program but i am getting exception when i try to call the remote method from RMI client program.
Server program:
import java.rmi.*;
import java.rmi.registry.*;
import java.rmi.server.*;
public class Hello extends UnicastRemoteObject implements HelloInterface {
private String message;
public Hello() throws RemoteException{
int port=1024;
Registry registry;
try{
registry = LocateRegistry.createRegistry(port);
registry.rebind("samplermi", this);
System.out.println ("Server started and listening on port " + port);
}
catch(RemoteException e){
System.out.println("remote exception"+ e);
}
}
public String sayHi (String name) throws RemoteException {
message = "Hi .. Welcome " + name;
return message;
}
public static void main(String args[]){
try{
Hello serverObj = new Hello();
}
catch (Exception e){
e.printStackTrace();
System.exit(1);
}
}
}
Client Program:
registry=LocateRegistry.getRegistry(serverAddress,serverPort);
if(registry !=null){
String[] availRemoteServices = registry.list();
for(int i=0;i<availRemoteServices.length;i++){
System.out.println("Service " + i + ": " +availRemoteServices[i]);
}
}
rmiServer=(HelloInterface)(registry.lookup("samplermi"));
System.out.println("calling remote method!");
// call the remote method
welcomeMsg = rmiServer.sayHi(text);
System.out.println("Message from server: " + welcomeMsg);
I am getting connection exception only at the time of calling the remote method sayHI. It works fine for lookup and listing the service name.
R:\Deptapps\itdm\Sample_RMI>java NewSampleRMIClient
Getting Registry Object from server!!
Registry Object Created!!
Service 0: samplermi
Services listed successfully!
Look up successful!
calling remote method!
java.rmi.ConnectException: Connection refused to host; nested exception is:
java.net.ConnectException: Connection timed out: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at Hello_Stub.sayHi(Unknown Source)
at NewSampleRMIClient.main(NewSampleRMIClient.java:42)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
Note: The same program is working correctly when running server in solaris and client from windows. It is not working only when running server in AIX and client from windows.
Kindly can someone help in resolving this issue. I have been trying to fix this issue since 2 days but no use. Please help me!!
This is covered in Item A.1 of the RMI FAQ.
Run rmiregistry.exe before running Hello.class, it solved my problem.
RMi Working on the default port 1099. So no need to create the port.. If you are using default port number then exception may not be fired. and program may work properly.
when i start rmiserver implementation class it displays this error message
Remote exception: java.rmi.ServerException: RemoteException occurred in server t
hread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested excep
tion is:
java.lang.ClassNotFoundException: RMIServerImpl_Stub
commands ran
start rmiregistry
start java -Djava.security.policy=policyfile RMIServerImpl
what can i do to resolve this. Please help
This is my rmi server code
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.registry.*;
public class RMIServerImpl extends UnicastRemoteObject
implements RMIServer {
RMIServerImpl() throws RemoteException {
super();
}
public static void main(String args[]) {
try {
System.setSecurityManager(new RMISecurityManager());
RMIServerImpl Server = new RMIServerImpl();
Naming.rebind("SAMPLE-SERVER", Server);
System.out.println("Server waiting.....");
} catch (java.net.MalformedURLException mue) {
System.out.println("Malformed URL: " + mue.toString());
} catch (RemoteException re) {
System.out.println("Remote exception: " + re.toString());
}
}
}
Sounds like you didn't run the rmic compiler to generate stubs and skeletons.
It's been so long since I've done raw RMI by hand that I don't know if that step is still required. But it was the last time I did RMI.
If you did run rmic, then I'd guess that you didn't package the stub and skeleton properly with the server and client sides. If you can find those .class files, check your packaging and deployment.