sapling/eden/scm/edenscm
Mark Thomas eef0c650e7 mutation: make the mutationstore the source of truth for mutation entries
Summary:
Previously the mutation commit extras were the source of truth for mutation
information, and the mutation store served as a kind of cache.  This turned out
to be less useful than expected, as oftentimes commits are missing, and the
store is better indexed, so in practice using the store as the source of truth
is better.

This change makes the mutationstore the (sole) source of truth for mutation
data.  The extras are kept, but they are now only useful as human-readable
debug information, and to ensure the commit hash is unique.

Collecting the mutation information during commit creation is now done through
a new `mutinfo` object.  This is a dict with the same keys as the mutation
extras, for simplicity, but it is now passed through the `committablectx` and
used to generate the mutation store entry directly.

The `mutation.enabled` config option is now used to control all aspects of
enabling mutation.

The `mutation.record` config option is now only used to indicate whether the
mutation extras should also added to the commit.  Generally this should be set
to `true`, however the option is retained so that mutation extras can be
stripped by running `hg amend --config mutation.record=false`, which no longer
has the side-effect of not recording mutation information to the store.

The "remote commit" mutation record origin is now obsolete, and won't be
generated anymore.

Pushrebase now relies on the obsmarker information coming back from the server
in order to correctly generate mutation information.  We will need to change
this so that the server returns mutation records before we can fully deprecate
obsmarkers.

Reviewed By: DurhamG

Differential Revision: D19410650

fbshipit-source-id: 8d7094e4bfd8d8e97916898d899a8debd339485f
2020-01-16 01:03:22 -08:00
..
hgdemandimport demandimport: blacklist windll 2019-12-10 17:53:39 -08:00
hgext mutation: make the mutationstore the source of truth for mutation entries 2020-01-16 01:03:22 -08:00
mercurial mutation: make the mutationstore the source of truth for mutation entries 2020-01-16 01:03:22 -08:00
__init__.py typing: enable pyre 2019-12-04 10:55:00 -08:00
traceimport.py typing: enable pyre 2019-12-04 10:55:00 -08:00