Lars Storm (Systematic) created CAMEL-20806:
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Summary: ProducerCache may reference producers from stopped
endpoints
Key: CAMEL-20806
URL: https://issues.apache.org/jira/browse/CAMEL-20806
Project: Camel
Issue Type: Bug
Components: camel-core
Affects Versions: 4.4.1, 2.25.0
Reporter: Lars Storm (Systematic)
*Problem in short:*
The DefaultProducerCache created from .toD(...) in a route may reference
producers created from endpoints that have been stopped.
Specifically the endpoint may have been stopped from
camelContext.removeEndpoint(...)
*Proposal:*
ProducerCaches should be notified when an endpoint is stopped. The
ProducerCache may then find and evict the leaked producer.
*Use case:*
In some cases we create a n endpoint (e.g. CxfEndpoint) programmatically per
tenant (Multi-tenant setup) and store the endpoint in a non-Camel cache. The
endpoint is then passed on to a Camel route on request.
The endpoint is then dynamically used in a .toD(...)
However the local cache may decide to stop the endpoint due to changes
performed in tenant properties and create a new one. e.g. changing the endpoint
url or similar.
In that case the TenantEndpointCache removes the current endpoint the camel
context and creates a new one which is added to the context.
Example route code:
{noformat}
.setProperty("endpoint").method(TenantEndpointCache.class, "createEndpoint")
.toD("${exchangeProperty.endpoint}"){noformat}
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