[jira] [Updated] (CAMEL-25066) camel-core - Producer cache eviction can stop a dynamic endpoint that another producer cache still uses

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

     [ https://issues.apache.org/jira/browse/CAMEL-25066?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen updated CAMEL-25066:
--------------------------------
    Fix Version/s: 4.23.0

> camel-core - Producer cache eviction can stop a dynamic endpoint that another producer cache still uses
> -------------------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-25066
>                 URL: https://issues.apache.org/jira/browse/CAMEL-25066
>             Project: Camel
>          Issue Type: Improvement
>          Components: camel-core
>            Reporter: Claus Ibsen
>            Assignee: shashank
>            Priority: Minor
>             Fix For: 4.23.0
>
>
> Endpoints are shared per CamelContext, but producer caches are not. toD resolves its URI via context.getEndpoint(uri), and the endpoint registry caches dynamic endpoints, so two toD (or recipientList, routingSlip, ProducerTemplate) that resolve the same URI get the same Endpoint instance. Each of them has its own DefaultProducerCache (SendDynamicProcessor creates one per processor).
> When one cache evicts its producer, ServicePool (SinglePool.cleanupEvicts) stops the endpoint unless isEndpointInUse() finds it in the static endpoint registry or as a route consumer. It does not know about other producer caches, so the endpoint is stopped while another cache still holds a started producer for it.
> Example: two routes both do toD("seda:${header.region}"). Route A has a small cacheSize and sees many regions, so it evicts seda:eu and stops that endpoint while route B's cache still sends to it.
> This is not a regression: before CAMEL-25004 the endpoint was always stopped on eviction. Possible fixes: reference-count endpoint usage across producer caches, or leave stopping dynamic endpoints to the endpoint registry's own eviction.
> Follow-up from the review of https://github.com/apache/camel/pull/26862.



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