java.lang.ClassNotFoundException error

[rogelio_sevilla1]

Good day to everyone:

I've already made this question on the camel forum but i think this is the right place to ask because of its nature (more fuse than camel).

I have 2 osgi bundles installed on fuse esb 4.4,  bundle #1 has a camel route and a simple pojo, bundle #2 has a simple pojo that takes the camel route on bundle #1 and instantiates it.

The deployment of the bundle #1 works pretty well, this is the route i have:

                   getContext().setHandleFault(true);

                   errorHandler(deadLetterChannel("file:data/log/capalerts")

                    .maximumRedeliveries(2)

                    .asyncDelayedRedelivery()

                    .redeliveryDelay(3000)

                    .useOriginalMessage()

                    .logStackTrace(true)

                    .logRetryStackTrace(true)

                    .retryAttemptedLogLevel(LoggingLevel.ERROR));

                    from("quartz://fetchUrl?cron=00/1+*?")

                    .bean(MyPojo.class,"getHtmlCode")

                    .wireTap("seda:auditorfeed")

                    .bean(MyPojo.class.class,"gettUrls")

                    .wireTap("seda:urlauditor")

                    .split(body(String.class).tokenize("\n"))

                    .to("seda:finaldest");

As you can see, i'm using a class called MyPojo.class inside my route. this class is also deployed with the camel route on the same package inside bundle #1, by the way, every package on this bundle is exported through the pom file.

After deploying it, i try to deploy bundle #2 which have a class with only 1 method:

public void init(){

     MyRoute myroute = new MyRoute();

        BundleContext bundleContext = Activator.getBundleContext();

        CamelContextFactory camelContextFactory = new CamelContextFactory();

        camelContextFactory.setBundleContext(bundleContext);

        DefaultCamelContext defaultContext = camelContextFactory.createContext();

        defaultContext.addRoutes(miruta);

        defaultContext.start();

}

The moment i install and try to start the bundle #2, i get this exception:

ERROR | rint Extender: 1 | BlueprintContainerImpl           | 10 - org.apache.aries.blueprint - 0.3.1 | Unable to start blueprint container for bundle my_routes_factory

org.osgi.service.blueprint.container.ComponentDefinitionException: Unable to intialize bean MyRoutesFactory

        at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:638)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:724)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:64)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:219)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:147)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:640)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:331)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:227)[10:org.apache.aries.blueprint:0.3.1]

        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)[:1.6.0_25]

        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)[:1.6.0_25]

        at java.util.concurrent.FutureTask.run(FutureTask.java:138)[:1.6.0_25]

        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)[:1.6.0_25]

        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)[:1.6.0_25]

        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)[:1.6.0_25]

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)[:1.6.0_25]

        at java.lang.Thread.run(Thread.java:662)[:1.6.0_25]

Caused by: org.apache.camel.FailedToCreateRouteException: Failed to create route route5 at: >>> Bean[com.mycompany.my_main_route.MyPojo.class] <<< in route: Route[[From[quartz://fetchUrl?cron=00/1**+?]] -> [Bean[... because of java.lang.ClassNotFoundException: com.mycompany.my_main_route.MyPojo.class

        at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:818)

        at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:165)

        at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:708)

        at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:1650)

        at org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:1439)

        at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:1338)

        at org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:67)

        at org.apache.camel.impl.ServiceSupport.start(ServiceSupport.java:54)

        at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:1316)

        at com.my_company.my_route_factory.MyRouteFactory.init(MyRouteFactory.java:39)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.6.0_25]

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)[:1.6.0_25]

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)[:1.6.0_25]

        at java.lang.reflect.Method.invoke(Method.java:597)[:1.6.0_25]

        at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:226)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.container.BeanRecipe.invoke(BeanRecipe.java:824)[10:org.apache.aries.blueprint:0.3.1]

        at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:636)[10:org.apache.aries.blueprint:0.3.1]

        ... 15 more

Caused by: org.apache.camel.RuntimeCamelException: java.lang.ClassNotFoundException: com.mycompany.my_main_route.MiPojo

        at org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException(ObjectHelper.java:1139)

        at org.apache.camel.model.BeanDefinition.createProcessor(BeanDefinition.java:164)

        at org.apache.camel.model.ProcessorDefinition.makeProcessor(ProcessorDefinition.java:433)

        at org.apache.camel.model.ProcessorDefinition.addRoutes(ProcessorDefinition.java:181)

        at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:815)

        ... 31 more

Caused by: java.lang.ClassNotFoundException: com.flytecomm.noaa_atom_feed_consumer.AtomFeedMessageConversorBean

        at org.apache.camel.impl.DefaultClassResolver.resolveMandatoryClass(DefaultClassResolver.java:52)

        at org.apache.camel.model.BeanDefinition.createProcessor(BeanDefinition.java:162)

        ... 34 more

According to this, camel cannot find the class com.mycompany.my_main_route.MyPojo.class , but i really don't understand why, because i'm already exporting it. If i execute command osgi:header on the bundle that instantiates the camel route,  this is the result:

Manifest-Version = 1.0

Bnd-LastModified = 1311372596591

Tool = Bnd-1.15.0

Built-By = rogeliosevilla1

Build-Jdk = 1.6.0_26

Created-By = Apache Maven Bundle Plugin

Bundle-Name = My Route Factory

Bundle-SymbolicName = my_route_factory

Bundle-Version = 1.0.0.SNAPSHOT

Bundle-ManifestVersion = 2

Import-Package =

        com.mycompany.my_main_route,

        org.apache.camel;version="[2.7,3)",

        org.apache.camel.builder;version="[2.7,3)",

        org.apache.camel.impl;version="[2.7,3)",

        org.apache.camel.osgi;version="[2.7,3)",

After that,executing the command

packages:exports | grep mycompany

y get this:

   246 com.mycompany.my_main_route; version=0.0.0

   247 com.mycompany.my_saver_bundle; version=0.0.0

   248 com.mycompany.my_route_factory; version=0.0.0

As you can see it is stated on my bundle that the package should be imported, also, according th the packages:exports command,  the package is exported.. but still, i keep getting the same error :-S , i'm honestly lost in here.

Any advice would be really appreciated.

Thanks a lot in advance.

[njiang]

from("quartz://fetchUrl?cron=0+0/1+*+?")
.bean(MyPojo.class,"getHtmlCode")
.wireTap("seda:auditorfeed")
.bean(MyPojo.class.class,"gettUrls")
.wireTap("seda:urlauditor")
.split(body(String.class).tokenize("\n"))
.to("seda:finaldest");

Can you change the ".bean(MyPojo.class.class, "gettUrls")" to ".bean(MyPojo.class, "getUrls")" ?

[rogelio_sevilla1]

Thanks mr. Willem, sorry, that was a typo on my part while pasting the code here on the forum. The method is written correctly on the real code :-S .  Do you see any other irregularity on the situation??

[rogelio_sevilla1]

Mr. Willem I've seen your answer on the camel forum, again sorry for double posting, i will keep answering here:

>Can you try to use the Spring instead of Blueprint to start your camel route?

I'm creating and starting my instantiated routes directly from code, do you mean that i should try using spring to deploy the bundle where i create them??

>And you should avoid to export the same package from different bundle.

Sorry mr. Willem i didn't quite catch this one. On each of my bundles i'm exporting only the package that lives on that bundle, is this the correct usage?

>BTW,  where is the Activator ?

I'm importing the Activator from this package

import org.apache.camel.osgi.Activator;

And i'm using it directly on the code without any modification. Is this ok??

Thanks A LOT in advance

[rogelio_sevilla1]

THANKS A LOT MR. WILLEM!!

Your questions on the camel forum lead me to the answer, although i don't know if my solution  is the right way to do it.

My usage of the Activator class was totally wrong. To solve it, i created a class called Activator and implemented the org.osgi.framework.BundleActivator interface.

My stop method is empty and in my start method y save the bundle context on a class member of the Activator class. using this:

public static BundleContext bundleContext;

    public void start(BundleContext bc) {

        bundleContext = bc;

    }

I also added the activator to my manifest file doing this:

Bundle-Activator: com.mycompany.my_route_factory.Activator

And on my RouteFactory class i have this

        MyRoute myroute = new MyRoute();

        CamelContextFactory camelContextFactory = new CamelContextFactory();

        camelContextFactory.setBundleContext(bundleContext);

        DefaultCamelContext defaultContext = camelContextFactory.createContext();

        defaultContext.addRoutes(myroute);

        defaultContext.start();

This has solved my problem. Thanks again for the help mr. Willem, i owe you like 12 beers by now, you should publish an address or something like that so send them :-P

[njiang]

Camel creates a delegate class loader which is based on the bundle instance that is passed by the bundle context.

If you are using the Activator from the camel-core bundle, it's make senses that you get the complain of not finding the router class. That is because camel-core bundle know nothing about your camel route class.

When you pass the bundle context from your bundle Activator, your route class is visible for the delegate class loader, and it works now.

Willem