shashank created CAMEL-26080:
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Summary: camel-jgroups - do not close a channel that the user gave
to the component or an endpoint when Camel stops
Key: CAMEL-26080
URL: https://issues.apache.org/jira/browse/CAMEL-26080
Project: Camel
Issue Type: Improvement
Components: camel-jgroups
Reporter: shashank
Assignee: shashank
{{JGroupsComponent.doStop}} closes the channel of the component ({{channel}}
option of the component) and every channel given to an endpoint
({{channel=#myChannel}}), as it did before CAMEL-25852. A {{JChannel}} cannot
be connected again once it is closed ({{JChannel.checkClosed()}} throws
{{IllegalStateException("channel is closed")}}), so a registry bean used as
channel is unusable after the CamelContext is stopped and started again in
place. Most Camel components leave a client the user supplied open and only
close what they created.
Since CAMEL-25852 the endpoint knows whether it created its channel
({{JGroupsEndpoint.isOwnChannel()}}), and the component counts the users of the
other channels.
h3. Proposed fix
Close only the channels that the endpoints created. Disconnect (not close) the
channels the user supplied when their last producer/consumer stops, as today,
and leave them open at component stop. Upgrade guide entry: a user-supplied
channel is no longer closed by Camel; close it yourself (for example as a bean
with a destroy method).
Also: the component channel is closed at stop even when no endpoint ever used
it (harmless, but goes with the change).
Tests: stop and start the CamelContext with {{channel=#bean}} and with the
component channel; the routes receive again.
Relates to CAMEL-25852 (review of apache/camel#28325).
_Filed with Claude Code on behalf of allthingssecurity._
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