Camel's ActiveMQ component http://camel.apache.org/activemq.html lists
that it needs dependencies:
* camel-jms
* activemq-camel
If I would be running Camel in standalone environment, I guess I would
be putting those as maven pom dependencies (examples in
http://camel.apache.org/activemq.html)
But since I am running my solution as OGSi bundle deployed in
ServiceMix, I am not sure. Should I put those as maven pom.xml
dependencies, or reference the OSGi bundles that already exist in
ServiceMix?
- what do I put in my maven pom.xml dependencies, what in
maven-bundle-plugin Import-Packages?
- are there any configuration examples / documentation on how to
configure servicemix OSGi bundle that contains camel route which uses
camel activemq component?
camel-osgi example starts with pom.xml with:
<dependencies>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-spring</artifactId>
<version>${camel.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<configuration>
<instructions>
<Bundle-SymbolicName>${pom.artifactId}</Bundle-SymbolicName>
<Import-Package>*,org.apache.camel.osgi</Import-Package>
<Private-Package>org.apache.servicemix.examples.camel</Private-Package>
</instructions>
</configuration>
</plugin>
</plugins>
</build>
How should I change it? Seems that no matter whether I add
org.apache.camel.component.jms to Import-Packages, or add
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-jms</artifactId>
<version>${camel.version}</version>
</dependency>
I always get java.lang.ClassNotFoundException:
org.apache.camel.component.jms.JmsComponent when I try to deploy my
bundle.
On Tue, Mar 8, 2011 at 2:35 PM, janne postilista
<[email protected]> wrote:
> I'm trying to run a simple camel test route which reads files from a
> directory, puts them into an ActiveMQ queue, and another one reads the
> files from the queue and writes them to another directory.
>
> I took examples/camel-osgi and started building on top of it.
>
> beans.xml:
>
> <route>
> <from uri="activemq:queue:someq"/>
> <to uri="file:d:/servicemix-files/out" />
> </route>
> <route>
> <from uri="file:d:/servicemix-files/in"/>
> <to uri="activemq:queue:someq"/>
> </route>
>
> <bean id="activemq"
> class="org.apache.activemq.camel.component.ActiveMQComponent"
> depends-on="my-broker">
> <property name="brokerURL" value="tcp://localhost:61616" />
> </bean>
>
> <broker:broker id="my-broker" useJmx="false" persistent="false"
> brokerName="localhost">
> <broker:transportConnectors>
> <broker:transportConnector uri="tcp://localhost:61616"/>
> </broker:transportConnectors>
> </broker:broker>
>
> At first I got a bunch of osgi "unresolved constraint in bundle
> camel-osgi errors". After a while of trial and error I ended up with
> following changes:
>
> features.xml:
>
> <feature name="examples-camel-osgi" version="4.2.0">
> <feature version="2.2.0">camel</feature>
> <feature version="5.3.0">activemq</feature>
> <feature version="4.2.0">camel-activemq</feature>
> <bundle>mvn:org.apache.servicemix.examples/camel-osgi/4.2.0</bundle>
> </feature>
>
> pom.xml:
> <artifactId>maven-bundle-plugin</artifactId>
> ...
>
> <Import-Package>*,org.apache.camel.component.jms,org.apache.activemq.xbean,org.apache.camel.osgi,org.apache.activemq.camel.component,org.apache.activemq.broker,org.apache.activemq.pool</Import-Package>
>
> But still I do get a ClassNotFoundException when I try to deploy the feature:
>
> Caused by: org.springframework.beans.factory.CannotLoadBeanClassException:
> Error loading class
> [org.apache.activemq.camel.component.ActiveMQComponent] for bean with
> name 'activemq' defined in URL [bun
> dle://222.0:0/META-INF/spring/beans.xml]: problem with class file or
> dependent class; nested exception is java.lang.NoClassDefFoundError:
> org.apache.activemq.camel.component.ActiveMQComponent not foun
> d from bundle [Apache ServiceMix Example :: Camel OSGi (camel-osgi)]
> at
> org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1144)
> ....
> Caused by: java.lang.ClassNotFoundException:
> org.apache.camel.component.jms.JmsComponent
>
> 1) What do I need to do to fix this ClassNotFoundException
> 2) How can I know what I need to configure into features.xml, pom.xml
> import-packages and dependencies when I want to use camel and it's
> activemq component from servicemix? Is this information documented
> somewhere? Doing it by trial-and-error gets frustrating pretty fast...
>
