Polling http endpoints

[jelmer]

Hi as part of a camel route i upload a file to a REST service, the service
will return status 202 and a Content-Location header that points to a json
resource with a status field
i want to wait for the status of this resource to change to completed, and
only then continue. so i need some sort of polling
But i don't see an obvious way to do this in camel
can anyone offer any suggestions?