paul chipchase 462290f718 Extending the VA pulling API to allow for batch pulls ...

#rb Per.Larsson
#jira UE-163093
#rnx
#preflight 63526abcae33b04ec1ee4a65

- The caller can now request more than one payload to be pulled froim the system at a time. In theory this will allow backends to pull data quicker.
-- The file system backend works with the new system but makes no attempt to take advantage as the backend is not intended for serious production use.
-- The DDC backend should be taking full advantage of the new batching API
-- Note that although the source control API does attempt to take advantage of batching, the internal source control API implementation is not doing so. This will be addressed in a future submit.
- This does make the pulling logic a bit more complicated in FVirtualizationManager as we need to deal with some payloads being found in the first backend, some in the second and some in the third etc.
-- To help deal with this a new class FPullRequestCollection has been added which abstracts a lot of complexity away.

[CL 22707955 by paul chipchase in ue5-main branch]

2022-10-21 22:27:40 -04:00

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