Gregory Szorc <gregory.szorc@gmail.com> [Wed, 08 Aug 2018 16:01:26 -0700] rev 39054
changegroup: differentiate between fulltext and diff based deltas
Previously, revisiondelta encoded a delta and an optional prefix
containing a delta header. The underlying code could populate
the delta with either a real delta or a fulltext revision.
Following the theme of wanting to defer serialization of revision
data to the changegroup format as long as possible, it seems
prudent for the revision delta instance to capture what type of
data is being represented. This could possibly allow us to
encode revision data differently in the future. But for the
short term, it makes the behavior of a revisiondelta more
explicit.
Differential Revision: https://phab.mercurial-scm.org/D4213
Gregory Szorc <gregory.szorc@gmail.com> [Wed, 08 Aug 2018 15:28:22 -0700] rev 39053
changegroup: minor cleanups to deltagroup()
Differential Revision: https://phab.mercurial-scm.org/D4212
Gregory Szorc <gregory.szorc@gmail.com> [Wed, 08 Aug 2018 14:44:48 -0700] rev 39052
changegroup: emit revisiondelta instances from deltagroup()
By abstracting the concept of a delta group away from its
serialization (the changegroup format), we make it easier
to establish alternate serialization formats. We also make
it possible to move aspects of delta group generation into
the storage layer. This will allow storage to make decisions
about e.g. delta parent choices without the changegroup code
needing storage APIs to determine delta parents. We're still
a bit of a way from there. Future commits will work towards
that world.
Differential Revision: https://phab.mercurial-scm.org/D4211
Gregory Szorc <gregory.szorc@gmail.com> [Wed, 08 Aug 2018 14:33:33 -0700] rev 39051
changegroup: move file chunk emission to generate()
Same deal as manifests. We want to get to a point where we can
emit data structures from deltagroup() and derive the raw
changegroup data as late as possible.
Differential Revision: https://phab.mercurial-scm.org/D4210
Gregory Szorc <gregory.szorc@gmail.com> [Wed, 08 Aug 2018 15:14:59 -0700] rev 39050
changegroup: move manifest chunk emission to generate()
We want to get to a point where we can emit data structures from
deltagroup() and derive the raw changegroup data as late as possible.
Differential Revision: https://phab.mercurial-scm.org/D4209
Gregory Szorc <gregory.szorc@gmail.com> [Wed, 08 Aug 2018 15:09:12 -0700] rev 39049
changegroup: move size tracking and end of manifests to generate()
Preparing for all the generate* functions to emit data structures
instead of raw chunks.
Differential Revision: https://phab.mercurial-scm.org/D4208
Gregory Szorc <gregory.szorc@gmail.com> [Wed, 08 Aug 2018 14:15:33 -0700] rev 39048
changegroup: emit delta group close chunk outside of deltagroup()
I want to make deltagroup() emit data structures rather than
serialized deltas. Upcoming commits will demonstrate why.
Differential Revision: https://phab.mercurial-scm.org/D4207