自由激活@MessageDriven

Question

I want to activate custom message listener on liberty application server.

this is my code:

@MessageDriven(name = "Receiver")
public class Receiver implements InboundListener {

    @Override
    public void receiveMessage(String message) {
        System.out.println("Message Received : " + message);
    }
}      

and this is server.xml:

<?xml version="1.0" encoding="UTF-8"?>
<server description="Dandelion IOT server">
    <featureManager>
        <feature>cdi-2.0</feature>
        <feature>beanValidation-2.0</feature>
        <feature>appSecurity-3.0</feature>
        <feature>jpa-2.2</feature>
        <feature>jaxrs-2.1</feature>
        <feature>jsonb-1.0</feature>
        <feature>jsonp-1.1</feature>
        <feature>managedBeans-1.0</feature>
        <feature>websocket-1.1</feature>
        <feature>ejbLite-3.2</feature>
        <feature>jca-1.7</feature>
        <feature>jndi-1.0</feature>
        <feature>mdb-3.2</feature>
        <feature>localConnector-1.0</feature>
    </featureManager>
    <library id="DandelionLibs">
        <fileset dir="/etc/dandelion/lib" includes="*.jar"/>
    </library>
    <jdbcDriver id="database-driver" libraryRef="DandelionLibs"/>
    <dataSource jndiName="JTA-DataSource" transactional="true" jdbcDriverRef="database-driver">
        <properties databaseName="${database.name}" serverName="${database.hostname}" portNumber="${database.port}"
                    user="${database.username}" password="${database.password}"/>
    </dataSource>

    <resourceAdapter id="dra" autoStart="true" location="/etc/dandelion/lib/RA.rar"/>

    <connectionFactory jndiName="h5/sampleConnection">
        <properties.dra/>
    </connectionFactory>

    <activationSpec id="h5/inboundListener">
        <properties.dra.DandelionActivationSpec/>
    </activationSpec>

    <webApplication id="dandelion-web"
                    location="dandelion-war-0.1-SNAPSHOT.war"
                    name="dandelion-web">
        <classloader classProviderRef="dra"/>
    </webApplication>

    <basicRegistry id="basic" realm="BasicRealm"/>
    <httpSession securityIntegrationEnabled="false"/>
    <httpEndpoint id="defaultHttpEndpoint" httpPort="8080" httpsPort="9443">
        <httpOptions http2="enabled"/>
    </httpEndpoint>
    <webContainer disableXPoweredBy="true"/>
    <applicationManager autoExpand="true"/>
    <applicationMonitor updateTrigger="mbean"/>
</server>    

and my activation specification:

@Activation(messageListeners = InboundListener.class)
public class DandelionActivationSpec implements ActivationSpec {

    private ResourceAdapter resourceAdapter;

    @Override
    public void validate() throws InvalidPropertyException {
    }

    @Override
    public ResourceAdapter getResourceAdapter() {
        return resourceAdapter;
    }

    @Override
    public void setResourceAdapter(ResourceAdapter ra) throws ResourceException {
        this.resourceAdapter = ra;
    }
}       

and ra.xml:

<?xml version="1.0" encoding="UTF-8"?>
<connector xmlns="http://xmlns.jcp.org/xml/ns/javaee"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
           http://xmlns.jcp.org/xml/ns/javaee/connector_1_7.xsd"
           version="1.7">
    <description>Sample Resource Adapter</description>
    <display-name>Sample Resource Adapter</display-name>
    <eis-type>Sample Resource Adapter</eis-type>
    <resourceadapter-version>1.0</resourceadapter-version>
    <license>
        <license-required>false</license-required>
    </license>
    <resourceadapter>
        <resourceadapter-class>org.company.dandelion.adapter.DandelionResourceAdapter</resourceadapter-class>
        <outbound-resourceadapter>
            <connection-definition>
                <managedconnectionfactory-class>org.company.dandelion.adapter.DandelionManagedConnectionFactory</managedconnectionfactory-class>
                <connectionfactory-interface>org.company.dandelion.api.DandelionConnectionFactory</connectionfactory-interface>
                <connectionfactory-impl-class>org.company.dandelion.adapter.DandelionConnectionFactoryImpl</connectionfactory-impl-class>
                <connection-interface>org.company.dandelion.api.DandelionConnection</connection-interface>
                <connection-impl-class>org.company.dandelion.adapter.DandelionConnectionImpl</connection-impl-class>
            </connection-definition>
            <transaction-support>NoTransaction</transaction-support>
            <reauthentication-support>false</reauthentication-support>
        </outbound-resourceadapter>
        <inbound-resourceadapter>
            <messageadapter>
                <messagelistener>
                    <messagelistener-type>org.company.dandelion.api.InboundListener</messagelistener-type>
                    <activationspec>
                        <activationspec-class>org.company.dandelion.adapter.DandelionActivationSpec</activationspec-class>
                    </activationspec>
                </messagelistener>
            </messageadapter>
        </inbound-resourceadapter>
    </resourceadapter>
</connector>

Liberty application server result this log on console:

[WARNING ] CNTR4015W: The message endpoint for the Receiver message-driven bean cannot be activated because the dandelion-war-0.1-SNAPSHOT/Receiver activation specification is not available. The message endpoint will not receive messages until the activation specification becomes available.        

outbound resource adapter working without any problem, but inbound does not receive any message !
I read this links before asking this question but can not understand how can fix this problem:
Link 1
Link 2
Link 3
What part of configuration/Code has problem?

UPDATE:
I change configuration to this:

<activationSpec id="dandelion-web/Receiver">
    <properties.dra/>
</activationSpec>
<webApplication id="dandelion-web"
                location="dandelion-web.war"
                name="dandelion-web">
    <classloader classProviderRef="dra"/>
</webApplication>     

now receive this error on console:

[AUDIT   ] J2CA7001I: Resource adapter dra installed in 1.911 seconds.
[AUDIT   ] CWWKT0016I: Web application available (default_host): http://localhost:8080/
[AUDIT   ] CWWKZ0001I: Application dandelion started in 8.064 seconds.
[err] javax.resource.spi.UnavailableException: activating thread not allowed to create endpoint during activation.
[err]   at com.ibm.ws.ejbcontainer.mdb.BaseMessageEndpointFactory.createEndpoint(BaseMessageEndpointFactory.java:406)
[err]   at [internal classes]
[err]   at com.company.dandelion.adapter.DandelionResourceAdapter.endpointActivation(DandelionResourceAdapter.java:56)
[err]   at com.ibm.ws.jca.service.EndpointActivationService.activateEndpoint(EndpointActivationService.java:585)
[err]   at [internal classes]
[err]   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[err]   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[err]   at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[err]   at java.base/java.lang.reflect.Method.invoke(Method.java:566)
[err]   at org.apache.felix.scr.impl.inject.methods.BaseMethod.invokeMethod(BaseMethod.java:242)
[err]   at org.apache.felix.scr.impl.inject.methods.BaseMethod.access$500(BaseMethod.java:41)
[err]   at org.apache.felix.scr.impl.inject.methods.BaseMethod$Resolved.invoke(BaseMethod.java:678)
[err]   at [internal classes]
[err]   at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[err]   at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[err]   at java.base/java.lang.Thread.run(Thread.java:834)
[AUDIT   ] CWWKF0012I: The server installed the following features: [appSecurity-3.0, beanValidation-2.0, cdi-2.0, distributedMap-1.0, ejbLite-3.2, el-3.0, jaxrs-2.1, jaxrsClient-2.1, jca-1.7, jdbc-4.2, jndi-1.0, jpa-2.2, jpaContainer-2.2, jsonb-1.0, jsonp-1.1, localConnector-1.0, managedBeans-1.0, mdb-3.2, servlet-4.0, ssl-1.0, websocket-1.1].
[AUDIT   ] CWWKF0011I: The dandelion server is ready to run a smarter planet. The dandelion server started in 12.919 seconds.     

this is my DandelionResourceAdapter:

@Connector(
        description = "Sample Resource Adapter",
        displayName = "Sample Resource Adapter",
        eisType = "Sample Resource Adapter",
        version = "1.0"
)
public class DandelionResourceAdapter implements ResourceAdapter {

    final Map<DandelionActivationSpec, EndpointTarget> targets = new ConcurrentHashMap<>();

    public void start(BootstrapContext bootstrapContext) throws ResourceAdapterInternalException {
    }

    public void stop() {
    }

    public void endpointActivation(final MessageEndpointFactory messageEndpointFactory,
                                   final ActivationSpec activationSpec) {
        final DandelionActivationSpec sampleActivationSpec = (DandelionActivationSpec) activationSpec;

        // ->>>>>>>>> EXCEPTION FOR THIS LINES : 
        try {
            final MessageEndpoint messageEndpoint = messageEndpointFactory.createEndpoint(null);
            final EndpointTarget target = new EndpointTarget(messageEndpoint);
            targets.put(sampleActivationSpec, target);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void endpointDeactivation(MessageEndpointFactory messageEndpointFactory, ActivationSpec activationSpec) {
        final DandelionActivationSpec sampleActivationSpec = (DandelionActivationSpec) activationSpec;

        final EndpointTarget endpointTarget = targets.get(sampleActivationSpec);
        if (endpointTarget == null) {
            throw new IllegalStateException("No EndpointTarget to undeploy for ActivationSpec " + activationSpec);
        }

        endpointTarget.messageEndpoint.release();
    }

    public XAResource[] getXAResources(ActivationSpec[] activationSpecs) throws ResourceException {
        return new XAResource[0];
    }

    public void sendMessage(final String message) {
        final Collection<EndpointTarget> endpoints = this.targets.values();
        for (final EndpointTarget endpoint : endpoints) {
            endpoint.invoke(message);
        }
    }

    public static class EndpointTarget {
        private final MessageEndpoint messageEndpoint;

        public EndpointTarget(final MessageEndpoint messageEndpoint) {
            this.messageEndpoint = messageEndpoint;
        }

        public void invoke(final String message) {
            ((InboundListener) this.messageEndpoint).receiveMessage(message);
        }
    }
}

Answer 1

Iranians have a proverb that says: a seeker is a finder
Finally after about 10 days search in internet and wrote simple codes. I found how can fix this problem.
Depend on application server, Message Endpoint should not created on endpointActivation method.
actually TomEE Application server does not result any exception on this code but liberty application server result this exceptions.
I wrote few simple application and published on github.
you can compile and run this application on both TomEE or Liberty.
I will publish more examples in the future, so you can use it too.

My GitHub Repository

Answer 2

I also got CNTR4015W: The message endpoint for the.. bean cannot be activated because the.. activation specification is not available.

Problem was, I had used.ear-name/.mdb-name/ejb-name but had also set a different <module-name> in ejb-jar.xml (which has priority)

This is documented in the Note at https://www.ibm.com/support/knowledgecenter/SSEQTP_liberty/com.ibm.websphere.wlp.doc/ae/twlp_dep_msg_mdbjca.html