Camel 2.0 Design

This wiki page lists the overall goals of the 2.0 release of Camel. For a detailed view see the Camel 2.0 JIRA roadmap

Main features

  • New async routing leveraging the JDK concurrent API to replace AsyncProcessor DONE
  • default to using transacted mode along with transacted error handlers CAMEL-866 DONE
  • improve smart completion of Java & XML DSLs DONE
  • make more endpoints easily configurable as beans in Spring XML CAMEL-506 DONE
  • improve the DSL
    • get rid of consumer. options for common options DONE
    • support # notation for URI options to lookup a reference in the bean registry DONE
    • consider how we can expose some of the ExpressionBuilder we have in Javs DSL in the XML DSL as well DONE
  • solving MEP issues DONE
  • using Camel${component}${name} pattern as header keys instead of using package names with dots that isn't likely to be transported by JMS or other transport types DONE
  • OSGi sample and wiki documentation DONE
  • Add the OSGi integration test support DONE
  • All of the bootstrap mechanisms (components, endpoints, converters, registry) should be osgi aware DONE
  • ServiceMix and Camel sample and wiki documentation DONE
  • Easier transacted route configuration DONE
  • onComplete(), onFailure() callbacks to UnitOfWork on a Exchange allowing custom code being executed when a Exchange completes DONE
  • Get the onComplete, onFailure callbacks on UnitOfWork exposes in the DSL and used by component to do cleanup after processing an exchange DONE

Refactoring of code and internal API changes

  • remove the use of generics on Component, Exchange, Producer, Consumer CAMEL-872 CAMEL-507 DONE
  • enhance the Expression/Predicate APIs to allow the required type to be passed in DONE
  • remove @deprecated code DONE
  • improvement of discovery of class resources in OSGi bundles CAMEL-775 DONE
  • cleanup BeanInfo (the algorithm to select right method to invoke by bean component) DONE
  • rewrite of the File and FTP component DONE
  • support VFS in Camel to reuse code for file transport types such as File, FTP DONE
  • reduce package tangling DONE
  • header filter strategy move from component to endpoint DONE
  • Introduce Channel DONE
  • Route navigator for tooling DONE
  • No lazy creation of messages in getOut, getFault to align them with regular java property behavior DONE

Other

  • UUID generator to be file friendly (eg zapping / and : chars) DONE

Nice to haves

  • Model objects toString(), label, shortName and description aligned and usable from Tracer/Visual Tooling etc.

Camel 2.1 Design

Main features

  • Overhaul of JMX and much improved JMX monitoring and management
  • More advanced and easier thread pool configuration such as from managed environments
    • setting core pool size as number of processors + 1
    • global, group, local configuration groups for thread pool configurations
  • easier to work with Aggregator
    • using POJO as AggregationStrategy
  • DSL for polling consumer in the route, eg to poll a FTP file or regular File in the route DSL directly, kinda like enrich but for consumer instead

OSGi

  • Much improved OSGi (willem)
    • Making component/converter discovery use OSGi services when in an OSGi environment
    • Making ObjectHelper.loadClass aware of OSGi environment DONE
    • More documentation and samples

DSL

  • improve the DSL
    • to better support polling and explicit MEPs CAMEL-402 CAMEL-486
    • a new schedule DSL for advanced scheduling of polling that can have builder methods (kinda like BAM) so you can: 
      schedule().every(5).minute().from("ftp://xxxx).to("bean:processFtpFile")...

Other

  • JAXB generator to slurp javadoc to be used for XSD documentation
  • Spring 3.0 support
  • Upgrade to use JUnit 4.x
  • Improved Dynamic Route Manipulation
    • Dynamic routing add/edit/stop/remove
    • Pausing consumers
    • Customization of endpoint options
    • and a lot more
  • self document the custom headers used in the endpoints/components CAMEL-228

Camel 2.x Design

  • have nice Spring 2 namespace schemas for different endpoints for nicer IDE completion
  • pluggable DSL (Hadrian) (Groovy will be able to do this)
  • component loading being isolated and better error reporting if failed to load
    • better annotation based type converter loading
  • Consider removing the Attachments API (only used by mail and many other components do not naturally support it and they loose attachments on the floor)
    • attached files by the mail component should just be headers on the message with special keys.
  • Consider removing FAULT and merge it with Exception (hadrian)
  • reduce the need to copy exchanges CAMEL-872
  • interceptors should be runtime applied and not woven in at design time - separate design time vs. runtime stuff
  • better streams support
  • ProducerTemplate better method names
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