[CAMEL-1644] Producer - Add scope for singleton to allow using non singleton producers to address thread safety

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0-M1
• Fix Version/s: 2.0-M2
• Component/s: camel-core
• Assignee: Claus Ibsen
• Reporter: Claus Ibsen
• Created: 25/May/09 08:24
• Updated: 21/Nov/09 11:58
• Resolved: 25/May/09 13:22

Description

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.

Issue Links

• is depended upon by: CAMEL-1647 Producer Pool - Add a producer pool for connection pooling capabilities

Sub-Tasks

• camel-ftp is not thread safe: Closed