[jira] [Commented] (CAMEL-10320) Provide a LeaderPolicy to ease the implementation of master/slave route/context

["Luca Burgazzoli (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CAMEL-10320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16025993#comment-16025993 ] 

Luca Burgazzoli commented on CAMEL-10320:
-----------------------------------------

As the cluster configuration is similar to the ServiceCall configuration, we could create a base configuration class for etcd/consul/kubernetes/jgroups etc.

> Provide a LeaderPolicy to ease the implementation of master/slave route/context
> -------------------------------------------------------------------------------
>
>                 Key: CAMEL-10320
>                 URL: https://issues.apache.org/jira/browse/CAMEL-10320
>             Project: Camel
>          Issue Type: New Feature
>          Components: camel-core
>            Reporter: Luca Burgazzoli
>             Fix For: 2.20.0
>
>
> I've been working on some master/slave RoutePolicy and I'm wondering
> if we can have a proper LeaderPolicy with a standardized
> implementation in Camel 3.0 so one has only to notify when a
> leadership is taken
> In addition it may be nice to have:
> - a support for Leader election from the CmelContext so the routes are
> started when the context become leader.
> - an option to warm-up routes or to keep them stopped while not leader
> Then we can also make it exposed in JMX so tooling are able to detect
> which are current master and slaves, and whatnot.
> Some possible DSL/EIP extensions:
> {code:java}
> from("...")
>     .routeId("myRoute")
>     .clustered() 
>         .group("my-group")
>         .consulConfiguration("http://consul-node:8500")
>         .end()
>     . to(...)
> {code}
> {code:java}
> camelContext.setDefaultClusteredRouteConfiguration(
>     ClusteredRouteConfiguration.builder()
>         .withAction(ClusteredRouteAction.SUSPEND)
>         .withHealtCheck(...)
>         .consulConfiguration("http://consul-node:8500")
>         .build()
> );
>   
> // lookup the cluster configuration from the registry   
> from("clustered:file:/data")
>     .routeId("data.files")
>     .to(...)
> // lookup the cluster configuration from the registry  
> from("clustered:file:/share")
>     .routeId("shared-files")
>     .to(...)
> {code}
> If the camel context detects a route is subject to clustering it should delegate the start/stop to a "RouteController" instead of starting the standard startup code.



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