Thanks to Maarten I was able to get basic ActiveMQ JMS topics and connection factories working in WAS. He has a nice write up in his reply to this topic: ActiveMQ 5.11 with WebSphere Application Server 8.5
But I cannot find a way to define any ActiveMQ JMS Activation Specs in the WAS admin console. And of course I need those in order to trigger my MDBs. ActiveMQ simply doesn't show up as a JMS provider when creating a new AS.
How do I configure Activation Specs in WAS using ActiveMQ as the provider? Am I missing a jar file?
activemq-client-5.11.0.jar
hawtbuf-1.11.jar
slf4j-api-1.7.10.jar
If you want to use Activation specification, you need to install ActiveMQ as JCA 1.5 compliant resource adapter. As far as I know, ActiveMQ provides resource adapter as separate install.
See also:
Deploying the ActiveMQ Resource Adapter into IBM WebSphere
Managing messaging with a third-party JCA 1.5 or 1.6-compliant messaging provider
ActiveMQ resource adapter
Listener ports are stabilized, and should only be used if provider doesn't support JCA.
Really straight forward once you understand (of course).
From the IBM Redbook mentioned above, sg247770.pdf, we need to configure ActiveMQ as a Generic JMS provider in WAS. And since we want to use Activation Specs, again from the Redbook, we need to use the ActiveMQ Resource Adapter, or rar file. There is a link on the ActiveMQ page to the latest rar, I don't need to provide it here. Once the rar is installed, using the WAS Console/Resources/Resource Adapters menu, you can configure J2C CFs, ASs, and administered objects including Queues and Topics from the rar configuration page. These will all have custom properties where you will enter your destinations, etc.
Related
I would like to create a JMS connection from a Java SE application in a broker-agnostic way.
I'm comparing to JDBC with its URL scheme for database connections. This creates independence from the actual implementation.
For JMS I haven't found something similar. I'm aware that in Java EE the JNDI will fulfill this role, but this is Java SE.
I don't want to tie my code to any particular queue broker as my needs are pretty simple JMS 1.1 send/receive of text messages.
I've looked at Spring Boot too because it is usually good at providing some level of agnosticism. But even with Spring Boot, I do not see such possibility.
JNDI is the way you write your JMS application to connect in a broker-agnostic way. JNDI client classes are part of Java SE. Both Spring and non-Spring Java SE applications use JNDI for this kind of integration.
Any JMS implementation should also provide a JNDI implementation that can be plugged into your application. Typically this is done by placing a file named jndi.properties on your classpath and putting the proper configuration for whatever JNDI implementation you're using into that file. When you create an empty InitialContext the jndi.properties file on your classpath is read automatically. The key=value pairs in jndi.properties are put into the InitialContext so that when you perform a lookup everything works with the implementation you've chosen. You can also configure this programmatically if you like by supplying the implementation specific details to the InitialContext via a constructor.
By using both the JMS and JNDI APIs in your Java SE application and externalizing broker-specific connection details to your jndi.properties file you can effectively isolate your applications from broker-specific code so you can deploy your app and work with different brokers with a few simple changes in a properties file.
The JNDI client implementation will come from whoever is providing the JMS implementation. The JNDI client essentially comes in the form of an javax.naming.spi.InitialContextFactory implementation packaged in a jar and there is usually documentation describing the available properties.
Here are a few examples:
The ActiveMQ 5.x broker provides org.apache.activemq.jndi.ActiveMQInitialContextFactory available in their activemq-client-<version>.jar. Documentation is available here.
The ActiveMQ Artemis broker provides org.apache.activemq.artemis.jndi.ActiveMQInitialContextFactory available in their artemis-jms-client-<version>.jar. Documentation is available here.
To be clear, the JMS specification doesn't require the use of JNDI to look-up admin objects, but it establishes the convention and expectation that JMS providers will do so. Section 4.2 of the JMS 1.1 specification states:
Although the interfaces for administered objects do not explicitly depend on JNDI, JMS establishes the convention that JMS clients find them by looking them up in a namespace using JNDI.
and later it says:
It is expected that JMS providers will provide the tools an administrator needs to create and configure administered objects in a JNDI namespace. JMS
provider implementations of administered objects should be both javax.naming.Referenceable and java.io.Serializable so that they can be stored in all JNDI naming contexts.
In my experience, JMS providers are usually eager to provide a JNDI implementation because they won't be as competitive without it since any alternative solution will not be standards compliant and will force users to implement non-portable code.
If you run into a provider that doesn't provide a JNDI implementation you could implement your own following the same pattern used by ActiveMQ 5.x, ActiveMQ Artemis, and Qpid JMS. These 3 implementations are client-side only and simply instantiate the admin objects based on the configuration provided to the InitialContext. Most of the code is boiler plate, and what isn't is very straight-forward.
i'm using Wildfly to deploy an EJB war that use an external messaging broker Apollo not the the one that come with wildfly ActiveMQ artemis.
What i must to do setup a JNDI configuration in standalone-full.xml file but there isn't any helpful tutorial to do this i don't know what exactly i need to change in the configuration to make this happen?
Is this post any help?
https://docs.jboss.org/author/display/WFLY10/Connect+a+pooled-connection-factory+to+a+Remote+Artemis+Server
I was able to use an external artermis broker (not the Wildfly container) following the above example.
I'm novice guy in JCA and JMS parts of Java EE stack, and now I'm struggling with JMS bridge configuration between two JMS providers (ActiveMQ 5.9.1 -> Weblogic 11g 10.3.5), and I need some help to understand all the moving parts and required configuration elements.
What I've done already:
JMS server configured on Weblogic 11g node
Configured Foreign Server - AMQ connection factory, and source queue objects bound to the local JNDI (OK: conn. factory and queue objects visible in server jndi tree)
Create JMS Bridge with default props (OK - I think)
Created the Bridge Destination for target destination (Weblogic) with default configuration - where possible (OK: Resource Adapter deployed)
Created the Bridge Destination for source destination (AMQ) - JNDI properties, default props where possible (FAIL - Cannot connect to the source destination)
And there is the question:
By default there are two resource adapters (XA, non-XA), do I need install the AMQ specific resource adapter?
I've assumed that yes, so I've downloaded rar file on Weblogic machine, then tried to install with Weblogic Console (Deployment -> Install), but.. another trouble - no way to achive Running state in Deployments view. I've read that all jars from rar need to be placed in Weblogic CLASSPATH, so I've copied them to Weblogic lib directory. But, with no success so far.
So, what I did wrong, where is the gap or an error in this configuration?
I have studied the Oracle documentation, but I feel still didn't get the complete understanding of the bridge config :((
Any explanatory replies very appreciated!!!
Ok, problem solved. I've used wrong JNDI names of connection factory and queue - local names defined in Foreign Server configuration instead of names on remove JMS server.
Actually, no additional configuration like Foreign Server, or Resource Adapter is needed here.
We're using Jboss, but we are really only using its JMS stuff. So, is there a way that I can trim down what's loaded when Jboss starts?
You can go for a servlet container (Tomcat) + a JMS provider (ex. ActiveMQ), without using an application server at all.
From 6 years ago, here's a blog entry about configuring JBoss with "just the right stuff."
I haven't used JBoss in a few years, but in v4.0, you could just drop the desired jar files into the deployment directory, and JBoss would load... only those jars.
The correct way to do this, is making a separate profile on your JBoss server that contains only the things needed to use JMS. JBoss v5 comes standard with several profiles: minimal, default, standard, all and web. Each of those starts other services. If you do not specify any profile, you're using the "default" profile.
You can create your own profile starting from a copy of the minimal profile and adding services as needed for JMS support.
The JBoss documentation contains a bit of information on what the files in those profile directories are used for. See Jboss server configurations.
You didn't specify which version of JBoss that you are using. Keep in mind that there are some changes in the configuration between JBoss v4 and JBoss v5/6. The referenced documentation in the answer from Cheeso points to JBoss v4.
I need to write a Message Driven Bean. I'm using JBoss IDE 1.5. I understand the concept behind MDB's but I don't really know how to install the JMS provider (JBoss MQ? I think) and use it so that it will be used to broker my message to an MDB.
does anyone know of a tutorial I can use ?
JBossMQ is the default JMS provider in JBoss 3.2.x and 4.x but is replaced by JBoss Messaging1 in JBoss AS 5.0 (JBoss Messaging 1.x is the default JMS provider in JBoss AS version 5).
Depending on the version of JBoss you are using, you already have a JMS provider so I'm not sure what you want to install. And for the configuration part (e.g. how to create a Queue/Topic to which you could send messages), you have to provide some XML files.
Check the Configuration section of http://www.jboss.org/community/wiki/jbossmq and especially the Destinations page for JBossMQ. This blog post might help too.
Check the chapter 6.6 Configuring Destinations of the Jboss Messaging 1.4 user guide. This blog post might help.
Note that starting with JBoss AS version 5.1.0, there is an admin console that allows to create JMS Destinations (expand the "JMS Destinations" entry in the tree view, click on either Queues or Topics, and the in the right panel click the "Add a new resource" button) and/or Connection Factories.
1Starting from version 2.0, JBoss Messaging has been rebranded to HornetQ.