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https://issues.apache.org/activemq/browse/CAMEL-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen updated CAMEL-1644:
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Attachment: CAMEL-1644b.patch
A patch without the file/ftp changes.
> Producer - Add scope for singleton to allow using non singleton producers to
> address thread safety
> --------------------------------------------------------------------------------------------------
>
> Key: CAMEL-1644
> URL: https://issues.apache.org/activemq/browse/CAMEL-1644
> Project: Apache Camel
> Issue Type: Improvement
> Components: camel-core
> Affects Versions: 2.0-M1
> Reporter: Claus Ibsen
> Assignee: Claus Ibsen
> Fix For: 2.0.0
>
> Attachments: CAMEL-1644b.patch
>
>
> See CAMEL-1641 that is a bug reported about the FTP producer not being thread
> safe for concurrent usage.
> To address this we should consider supporting Producers to implement
> {{IsSingleton}} and return {{false}} to indicate that a producer should not
> be cached in the {{ProducerCache}}.
> We should also introduce a {{ProducerCallback}} to allow safely usages of a
> producer and letting Camel handle the correct resource management to
> - find the producer (singletons)
> - add to cache if needed
> - or create it
> - start it
> - invoke the callback
> - stop it for non singletons
> etc.
> In the future we can support a pool of non singleton producers as well and
> with this callback users of this producer can safely use it without worrying
> how to get it from a pool and how to safely return it back without leaking.
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