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gvfs-helper prefetch #223

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wants to merge 2 commits into from
Closed

gvfs-helper prefetch #223

wants to merge 2 commits into from

Commits on Dec 6, 2019

  1. gvfs-helper: add prefetch support 

    Teach gvfs-helper to support "/gvfs/prefetch" REST API.
This includes a new `gvfs-helper prefetch --since=<t>` command line option.
And a new `objects.prefetch` verb in `gvfs-helper server` mode.

If `since` argument is omitted, `gvfs-helper` will search the local
shared-cache for the most recent prefetch packfile and start from
there.

The <t> is usually a seconds-since-epoch, but may also be a "friendly"
date -- such as "midnight", "yesterday" and etc. using the existing
date selection mechanism.

Add `gh_client__prefetch()` API to allow `git.exe` to easily call
prefetch (and using the same long-running process as immediate and
queued object fetches).

Expanded t5799 unit tests to include prefetch tests.  Test setup now
also builds some commits-and-trees packfiles for testing purposes with
well-known timestamps.

Expanded t/helper/test-gvfs-protocol.exe to support "/gvfs/prefetch"
REST API.

Massive refactor of existing packfile handling in gvfs-helper.c to
reuse more code between "/gvfs/objects POST" and "/gvfs/prefetch".
With this we now properly name packfiles with the checksum SHA1
rather than a date string.

Refactor also addresses some of the confusing tempfile setup and
install_<result> code processing (introduced to handle the ambiguity
of how POST works with commit objects).

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
    @jeffhostetler
    jeffhostetler committed Dec 6, 2019
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  2. gvfs-helper: add prefetch .keep file for last packfile 

    Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
    @jeffhostetler
    jeffhostetler committed Dec 6, 2019
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