Feature #13993

Updated by Peter Amstutz about 3 years ago

h3. Fetching collection flow

# Home cluster aaaaa
# Client sends request for collection UUID ccccc-* to arvados-controller for cluster aaaaa
# arvados-controller sends request for collection by UUID (with salted token) to federated cluster ccccc (this should reuse as much as possible the code from #13493)
# ccccc returns result
# arvados-controller modifies the signatures to indicate they are "remote" signatures
# return record to client with modified signatures