I'm trying to implement a custom mediator for WSO2 ESB (4.5.1) using its own XML configuration. I'm able to use the mediator just fine as a class mediator with the following config:
<class name="test.synapse.mediator.TestMediator"/>
However, what I'm trying to achieve is being able to call the mediator with a syntax like this:
<t:TestMediator xmlns:t="test:mediator" />
Having followed the available help on the matter for WSO2 ESB to the letter, I'm getting the following error as I try to create a proxy using the mediator with its own XML config:
ERROR - MediatorFactoryFinder Unknown mediator referenced by configuration element : {test:mediator}TestMediator
Needless to say, I've written the two text files containing the fully qualified class names of the mediator factory and serializer classes respectively and placed them in the META-INF/services directory in the bundle jar file.
This is the source code for my mediator class:
package test.synapse.mediator;
import org.apache.synapse.MessageContext;
import org.apache.synapse.mediators.AbstractMediator;
public class TestMediator extends AbstractMediator {
public boolean mediate(MessageContext context) {
System.out.println("TestMediator mediating!");
return true;
}
}
Here's the code for my mediator factory:
package test.synapse.mediator;
import java.util.Properties;
import javax.xml.namespace.QName;
import org.apache.axiom.om.OMElement;
import org.apache.synapse.Mediator;
import org.apache.synapse.config.xml.MediatorFactory;
public class TestMediatorFactory implements MediatorFactory {
public static final QName QNAME = new QName("test:mediator", "TestMediator");
@Override
public Mediator createMediator(OMElement omElement, Properties properties) {
return new TestMediator();
}
@Override
public QName getTagQName() {
return QNAME;
}
}
And the following is the code for my mediator serializer:
package test.synapse.mediator;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.synapse.Mediator;
import org.apache.synapse.config.xml.MediatorSerializer;
public class TestMediatorSerializer implements MediatorSerializer {
public static final String MEDIATOR_CLASS_NAME = TestMediator.class.getName();
@Override
public String getMediatorClassName() {
return MEDIATOR_CLASS_NAME;
}
@Override
public OMElement serializeMediator(OMElement parent, Mediator mediator) {
OMFactory factory = OMAbstractFactory.getOMFactory();
OMElement element = factory.createOMElement(TestMediatorFactory.QNAME);
parent.addChild(element);
return element;
}
}
And finally, the somewhat lengthy content of the project's pom.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>test.synapse.mediator.TestMediator</groupId>
<artifactId>TestMediator</artifactId>
<version>1.0.0</version>
<packaging>bundle</packaging>
<name>TestMediator</name>
<description>TestMediator</description>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0</version>
<configuration>
<source>1.5</source>
<target>1.5</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>2.3.4</version>
<extensions>true</extensions>
<configuration>
<instructions>
<Bundle-SymbolicName>TestMediator</Bundle-SymbolicName>
<Bundle-Name>TestMediator</Bundle-Name>
<Bundle-ClassPath>.</Bundle-ClassPath>
<Export-Package>test.synapse.mediator</Export-Package>
<Import-Package>*; resolution:=optional</Import-Package>
<Fragment-Host>synapse-core</Fragment-Host>
</instructions>
</configuration>
</plugin>
<plugin>
<artifactId>maven-eclipse-plugin</artifactId>
<version>2.9</version>
<configuration>
<buildcommands>
<buildcommand>org.eclipse.jdt.core.javabuilder</buildcommand>
</buildcommands>
<projectnatures>
<projectnature>org.wso2.developerstudio.eclipse.artifact.mediator.project.nature</projectnature>
<projectnature>org.eclipse.jdt.core.javanature</projectnature>
</projectnatures>
</configuration>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/resources/services</directory>
<targetPath>META-INF/services</targetPath>
</resource>
</resources>
</build>
<repositories>
<repository>
<releases>
<updatePolicy>daily</updatePolicy>
<checksumPolicy>ignore</checksumPolicy>
</releases>
<id>wso2-nexus</id>
<url>http://maven.wso2.org/nexus/content/groups/wso2-public/</url>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<releases>
<updatePolicy>daily</updatePolicy>
<checksumPolicy>ignore</checksumPolicy>
</releases>
<id>wso2-nexus</id>
<url>http://maven.wso2.org/nexus/content/groups/wso2-public/</url>
</pluginRepository>
</pluginRepositories>
<dependencies>
<dependency>
<groupId>commons-httpclient.wso2</groupId>
<artifactId>commons-httpclient</artifactId>
<version>3.1.0.wso2v2</version>
</dependency>
<dependency>
<groupId>commons-codec.wso2</groupId>
<artifactId>commons-codec</artifactId>
<version>1.4.0.wso2v1</version>
</dependency>
<dependency>
<groupId>org.apache.synapse</groupId>
<artifactId>synapse-core</artifactId>
<version>2.1.0-wso2v7</version>
</dependency>
<dependency>
<groupId>wsdl4j.wso2</groupId>
<artifactId>wsdl4j</artifactId>
<version>1.6.2.wso2v4</version>
</dependency>
<dependency>
<groupId>org.apache.ws.commons.schema.wso2</groupId>
<artifactId>XmlSchema</artifactId>
<version>1.4.7.wso2v2</version>
</dependency>
<dependency>
<groupId>org.apache.abdera.wso2</groupId>
<artifactId>abdera</artifactId>
<version>1.0.0.wso2v3</version>
</dependency>
<dependency>
<groupId>org.apache.geronimo.specs.wso2</groupId>
<artifactId>geronimo-stax-api_1.0_spec</artifactId>
<version>1.0.1.wso2v2</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents.wso2</groupId>
<artifactId>httpcore</artifactId>
<version>4.1.0-wso2v1</version>
</dependency>
<dependency>
<groupId>org.apache.neethi.wso2</groupId>
<artifactId>neethi</artifactId>
<version>2.0.4.wso2v4</version>
</dependency>
<dependency>
<groupId>org.apache.axis2.wso2</groupId>
<artifactId>axis2</artifactId>
<version>1.6.1.wso2v6</version>
</dependency>
<dependency>
<groupId>org.apache.woden.wso2</groupId>
<artifactId>woden</artifactId>
<version>1.0.0.M8-wso2v1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.apache.ws.commons.axiom.wso2</groupId>
<artifactId>axiom</artifactId>
<version>1.2.11.wso2v3</version>
</dependency>
<dependency>
<groupId>commons-io.wso2</groupId>
<artifactId>commons-io</artifactId>
<version>2.0.0.wso2v2</version>
</dependency>
</dependencies>
<properties>
<CApp.type>lib/synapse/mediator</CApp.type>
</properties>
</project>
I've been experimenting for a long time changing various aspects of the pom-file and the code. I've come to notice, that I can call the mediator using the class-mediator if I leave out the Fragment-Host part of the configuration. If the Fragment-Host element is present, neither way of calling the mediator works.
As expected I'm using apache Maven to build a jar-file of the project. I'm dropping the jar to the <ESB_HOME>/repository/components/dropins-directory.
I've tried using WSO2 ESB 4.5.1 and 4.7.0 with the exact same results.
What must I change to get the custom XML configuration to work?
Any input would be greatly appreciated!
Attachments:
Zipped source at Dropbox: TestMediator.zip
Jar built using maven at Dropbox: TestMediator-1.0.0.jar
