Using Camel-hdfs in a karaf bundle - maven

Question

I am trying to implement an camel route to send files in a HDFS server with an OSGI bundle, using java language with no blue print, but i can't make it work due tu hdfs scheme not being found while creating the route.
The code of the class has been tested as a Jar and works. The issue is in karaf, which seems to not be able to use camel-hdfs for the bundle, even if the camel-hdfs bundle is shown using the list command.
Here's the pom file of the project :
<modelVersion>4.0.0</modelVersion>
<groupId>the.group</groupId>
<artifactId>receiveFile</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>receiveFile</name>
<packaging>bundle</packaging>
<dependencies>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>osgi_R4_core</artifactId>
<version>1.0</version>
<scope>provided</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-hdfs</artifactId>
<version>2.10.4</version>
</dependency>
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-core</artifactId>
<version>2.10.4</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>2.3.7</version>
<extensions>true</extensions>
<configuration>
<instructions>
<Import-Package>*</Import-Package>
<Export-Package>activation</Export-Package>
<Private-Package>activation</Private-Package>
<Bundle-Activator>activation.Activator</Bundle-Activator>
</instructions>
</configuration>
</plugin>
</plugins>
</build>
I tried also Embed-Dependency with the transitive option, but it still doesn't work and i'm kind of stuck right now.
Karaf prints the following error :
org.osgi.framework.BundleException: Exception in activation.Activator.start() of bundle group.receiveFile.
The log :
org.osgi.framework.BundleException: Exception in activation.Activator.start() of bundle group.receiveFile.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:806)[osgi-3.6.2.R36x_v20110210.jar:]
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:755)[osgi-3.6.2.R36x_v20110210.jar:]
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:370)[osgi-3.6.2.R36x_v20110210.jar:]
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:284)[osgi-3.6.2.R36x_v20110210.jar:]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundle(DirectoryWatcher.java:1244)[6:org.apache.felix.fileinstall:3.2.4]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundles(DirectoryWatcher.java:1216)[6:org.apache.felix.fileinstall:3.2.4]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startAllBundles(DirectoryWatcher.java:1205)[6:org.apache.felix.fileinstall:3.2.4]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:500)[6:org.apache.felix.fileinstall:3.2.4]
at org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:291)[6:org.apache.felix.fileinstall:3.2.4]
Caused by: org.apache.camel.FailedToCreateRouteException: Failed to create route route1027 at: >>> To[hdfs://hadoopServer/received] <<< in route: Route[[From[file://toSend/]] -> [To[hdfs://hadoopServer/rece... because of Failed to resolve endpoint: hdfs://hadoopServer/received due to: No component found with scheme: hdfs
at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:879)
at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:172)
at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:722)
at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:1789)
at org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:1575)
at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:1444)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:1412)
at activation.Activator.start(Activator.java:24)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:783)[osgi-3.6.2.R36x_v20110210.jar:]
at java.security.AccessController.doPrivileged(Native Method)[:1.7.0_11]
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:774)[osgi-3.6.2.R36x_v20110210.jar:]
... 8 more
Caused by: org.apache.camel.ResolveEndpointFailedException: Failed to resolve endpoint: hdfs://hadoopServer/received due to: No component found with scheme: hdfs
at org.apache.camel.impl.DefaultCamelContext.getEndpoint(DefaultCamelContext.java:485)
at org.apache.camel.util.CamelContextHelper.getMandatoryEndpoint(CamelContextHelper.java:50)
at org.apache.camel.model.RouteDefinition.resolveEndpoint(RouteDefinition.java:187)
at org.apache.camel.impl.DefaultRouteContext.resolveEndpoint(DefaultRouteContext.java:108)
at org.apache.camel.impl.DefaultRouteContext.resolveEndpoint(DefaultRouteContext.java:114)
at org.apache.camel.model.SendDefinition.resolveEndpoint(SendDefinition.java:61)
at org.apache.camel.model.SendDefinition.createProcessor(SendDefinition.java:55)
at org.apache.camel.model.ProcessorDefinition.makeProcessor(ProcessorDefinition.java:461)
at org.apache.camel.model.ProcessorDefinition.addRoutes(ProcessorDefinition.java:179)
at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:876)
... 19 more
Karaf version : 2.2.8
Maven : m2e plugin, 3.0.4
Thanks in advance.

Answer 1

I would suggest to use a blueprint XML file to bootstrap your application. Just to setup a < camelContext >.
Otherwise you would have to do a lot of manual osgi setup and whatnot in your activator to properly setup Camel for OSGi. All that is taken care of when using camel-blueprint.
If you still want to do it from an Activator, then check out camel-core-osgi and see what we do there.