Stopping a file inbound channel adapter after one one file is read

Question

Our application uses a Spring Integration file:inbound-channel-adapter to poll a directory to listen to when a file is dropped there. Spring Integration then starts a Spring Batch job, handing over to the job the path and name of the file to process.

Obviously, the file poller continues to run even after a file has been processed by the Spring Batch job. So, the Spring context remains open and the application does not terminate. Is there a way, programatically or through configuration (preferable), to stop the poller after one file has been read?

Thanks

Answer 1

You can use a FireOnceTrigger on the poller, or one of the techniques described in addition to that, in this answer.

To programmatically stop the adapter, close() the context, or call adapter.stop() (@Autowire the adapter as a SourcePollingChannelAdapter. Or use a <control-bus/> and send a message with payload "adapterId.stop()".