[jira] [Resolved] (CAMEL-16243) camel-restlet : Compatibility issue of camel-restlet with camel-api library resulting in e "NoSuchMethodError:org.apache.camel.CamelContext.getRestConfiguration(Ljava/lang/String;Z)Lorg/apache/camel/spi/RestConfiguration" in RestletComponent class

["Claus Ibsen (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-16243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen resolved CAMEL-16243.
---------------------------------
    Resolution: Invalid

camel-restlet is removed, as documented in the migration guide. And its deprecated in 2.x.

> camel-restlet : Compatibility issue of camel-restlet with camel-api library resulting in e "NoSuchMethodError:org.apache.camel.CamelContext.getRestConfiguration(Ljava/lang/String;Z)Lorg/apache/camel/spi/RestConfiguration" in RestletComponent class
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-16243
>                 URL: https://issues.apache.org/jira/browse/CAMEL-16243
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-restlet
>         Environment: Open JDK 11.0.2
>            Reporter: Pawan Mundhra
>            Priority: Major
>             Fix For: 3.x
>
>
>  
> Recently we upgraded our Application's overall camel version from 2.16.0 to 3.4.4
> One of the component we used in our Application was camel-restlet component (version 2.16.0). 
> Issue #1 : It seems camel removed the restlet component after 3.x. Could not find much documentation which would let us know how to migrate the existing camel-restlet component
> Issue #2 : We gave a try to upgrade the camel-restlet component to 3.0.0-RC2. But during start-up of our service, we faced an error as mentioned in the below stack trace.
> {code:java}
> Exception in thread "main" java.lang.NoSuchMethodError: org.apache.camel.CamelContext.getRestConfiguration(Ljava/lang/String;Z)Lorg/apache/camel/spi/RestConfiguration;
>         at org.apache.camel.component.restlet.RestletComponent.doStart(RestletComponent.java:215)
>         at org.apache.camel.support.service.BaseService.start(BaseService.java:115)
>         at org.apache.camel.impl.engine.AbstractCamelContext.startService(AbstractCamelContext.java:3026)
>         at org.apache.camel.impl.engine.AbstractCamelContext.startServices(AbstractCamelContext.java:3032)
>         at org.apache.camel.impl.engine.AbstractCamelContext.doStartCamel(AbstractCamelContext.java:2759)
>         at org.apache.camel.impl.engine.AbstractCamelContext.doStartContext(AbstractCamelContext.java:2658)
>         at org.apache.camel.impl.engine.AbstractCamelContext.doStart(AbstractCamelContext.java:2621)
>         at org.apache.camel.support.service.BaseService.start(BaseService.java:115)
>         at org.apache.camel.impl.engine.AbstractCamelContext.start(AbstractCamelContext.java:2453)
>         at com.nri.csd.inf.console.service.GatewayService.startCamelContextIfNotStarted(GatewayService.java:201)
>         at com.nri.csd.inf.console.service.GatewayService.postStart(GatewayService.java:100)
>         at com.nri.csd.inf.console.service.AbstractLaunchableService.start(AbstractLaunchableService.java:216)
>         at com.nri.csd.inf.console.ConsoleLauncher.main(ConsoleLauncher.java:96)
> {code}
> Found in the code that RestletComponent java class in camel-restlet-3.0.0-RC2 version has an API doStart() in which at line 215, there is a call to CamelContext class's method getRestConfiguration("restlet", true) (class in camel-api jar).
>  
> {code:java}
> 210    @Override
> 211    protected void doStart() throws Exception {
> 212        super.doStart();        
> 213   
> 214         // configure component options
> 215        RestConfiguration config = getCamelContext().getRestConfiguration("restlet", true);
> 216        // configure additional options on spark configuration
> 217        if (config.getComponentProperties() != null && !config.getComponentProperties().isEmpty()) {
> 218            setProperties(this, config.getComponentProperties());
> 219        }        
> 220            
> 221           cleanupConverters(enabledConverters);        
> 222              
> 223           component.start();     
> 2234   }
> {code}
> The API called at line 215 above (i.e. getRestConfiguration) seems to be removed from the class org.apache.camel.CamelContext in library camel-api during upgradation to 3.2 from 3.1.
> Refer this [https://camel.apache.org/manual/latest/camel-3x-upgrade-guide-3_2.html]
> It seems that there is incompatibility with camel-restlet 3.0.0-RC2 along with Camel 3.2 and above.
>  
> However the above API in org.apache.camel.CamelContext in camel-api-3.0.0-RC2 is modified but I am having a transitive dependency upon camel-api-3.4 library and it seems that both camel-api-3.4 and camel-api-3.0.0-RC2 cannot be kept together.
>  
> One solution I can think of is revert the downgrade the Camel version to 3.1 instead of 3.4 which we would like to avoid.
> Please suggest what course of action can be taken for this issue with minimum impact or what is the compatibility of camel-restlet component and camel-api, camel-support libraries. We want all to be compatible with camel 3.4.0 version.



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