Thursday, January 30, 2014

Camel cxfendpoint to ActiveMQ queue


  • cxfendpoint expects an outgoing message to be present in order to be sent back; if an out endpoint posting the message to an ActiveMQ  broker is used this will not happen and a timeout error will occur
  • By default output of cxfendpoint message  payload  is of java.io.InputStream. An outgoing ActiveMQ endpoint will just ignore the payload and will save just the headers.
Below is the solution to above mentioned problems 9this must be included in the master ActiveMQ configuration file):
<?xml version="1.0" encoding="UTF-8"?>
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    contributor license agreements.  See the NOTICE file distributed with
    this work for additional information regarding copyright ownership.
    The ASF licenses this file to You under the Apache License, Version 2.0
    (the "License"); you may not use this file except in compliance with
    the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

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    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-->

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:cxf="http://camel.apache.org/schema/cxf"
       xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd
       http://camel.apache.org/schema/cxf http://camel.apache.org/schema/cxf/camel-cxf.xsd">


      <bean id="jmsConnectionFactory" 
         class="org.apache.activemq.ActiveMQConnectionFactory">
         <property name="brokerURL" value="vm://amq-broker?create=false" />
      </bean>
       
      <bean id="pooledConnectionFactory" 
         class="org.apache.activemq.pool.PooledConnectionFactory" init-method="start" destroy-method="stop">
         <property name="maxConnections" value="8" />
         <property name="connectionFactory" ref="jmsConnectionFactory" />
      </bean>
       
      <bean id="jmsConfig" 
         class="org.apache.camel.component.jms.JmsConfiguration">
         <property name="connectionFactory" ref="pooledConnectionFactory"/>
         <property name="concurrentConsumers" value="10"/>
      </bean>
       
      <bean id="activemq" 
          class="org.apache.activemq.camel.component.ActiveMQComponent">
          <property name="configuration" ref="jmsConfig"/>
       
          <!-- if we are using transacted then enable CACHE_CONSUMER (if not using XA) to run faster
               see more details at: http://camel.apache.org/jms 
          <property name="transacted" value="true"/>
          <property name="cacheLevelName" value="CACHE_CONSUMER" />
         -->
      </bean>      

    <!-- camelContext is the Camel runtime, where we can host Camel routes -->    
    <cxf:cxfEndpoint id="server"
                     address="http://localhost:8085/OTRS/service"
                     endpointName="s:BasicHttpBinding_ChangeStateOperations"
                     serviceName="s:ChangeStateService"
                     wsdlURL="examples\conf\wsdl\server.wsdl"
                     xmlns:s="http://tempuri.org/"/>
    
    
    
    <camelContext xmlns="http://camel.apache.org/schema/spring">
         <route>
            <from uri="cxf:bean:server?dataFormat=MESSAGE"/>
                <transform>
                  <simple>${bodyAs(String)}</simple>
                </transform>
                <wireTap uri="activemq:topic:otrs.statusChanged"/>
                <wireTap uri="stream:out"/>
                <transform>
                    <simple>
                        <![CDATA[
    <?xml version="1.0" encoding="utf-8"?>
    <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
      <s:Body>
        <TestWm1Response xmlns="http://tempuri.org/" />
      </s:Body>
    </s:Envelope>
                        ]]>
                    </simple>
                </transform>
            <!--to uri="cxf:bean:ocalculator?dataFormat=MESSAGE"/-->
        </route>
    </camelContext>
</beans>

Camel cxfenpoint in ActiveMQ 5.9.0

Using cxfendpoints in ActiveMQ requires deplyment of dependent jars in lib\Camel subdirectory. By default just core, jms and spring (2.12.1 version) are deployed.
In order to obtain required jars:

  • create a Maven pom.xml file with the following content:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

    <modelVersion>4.0.0</modelVersion>


    <groupId>org.apache.camel</groupId>

    <version>2.12.1</version>


    <artifactId>camel-example-console</artifactId>
    <packaging>jar</packaging>
    <name>Camel cxf</name>
    <description>camel-cxf dependencies</description>

    <dependencies>

        <dependency>
            <groupId>org.apache.camel</groupId>
            <artifactId>camel-cxf</artifactId>
            <version>2.12.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.camel</groupId>
            <artifactId>camel-stream</artifactId>
            <version>2.12.1</version>
        </dependency>

        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-rt-transports-http-jetty</artifactId>
            <version>2.7.8</version>
        </dependency>
        
        <dependency>
          <groupId>org.eclipse.jetty.aggregate</groupId>
          <artifactId>jetty-all-server</artifactId>
          <version>8.1.14.v20131031</version>
        </dependency>            
        <dependency>
          <groupId>org.eclipse.jetty</groupId>
          <artifactId>jetty-websocket</artifactId>
          <version>8.1.14.v20131031</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!-- Allows the example to be run via 'mvn compile exec:java' -->
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <configuration>
                    <mainClass>org.apache.camel.example.console.CamelConsoleMain</mainClass>
                    <includePluginDependencies>true</includePluginDependencies>
                </configuration>
            </plugin>
        </plugins>

    </build>

</project>
  • run the following command: mvn dependency:copy-dependencies
  • find in target\dependencies all required dependencies
Remark: because camel-cxf 2.12.1 depends on cxf-rt-transports-http-jetty 2.7.8 some newer versions of jetty jars will be aslo downloaded which will interfere with ActiveMQ already deployed jars (jetty-all-server and jetty-websocket, version 7.6.9.v20130131, lib\web ) so also jetty-all-server and jetty-websocket dependencies are downloaded. If this is not done web console will not work.

Put all jars in lib\camel.