view hgext/infinitepush/indexapi.py @ 48061:060cd909439f

dirstate: drop all logic around the "non-normal" sets

The dirstate has a lot of code to compute a set of all "non-normal" and
"from_other_parent" entries.

This is all used in one, unique, location, when `setparent` is called and moved
from a merge to a non merge. At that time, any "merge related" information has
to be dropped. This is mostly useful for command like `graft` or `shelve` that
move to a single-parent state -before- the commit. Otherwise the commit will
already have removed all traces of the merge information in the dirstate (e.g.
for a regular merges).

The bookkeeping for these sets is quite invasive. And it seems simpler to just
drop it and do the full computation in the single location where we actually
use it (since we have to do the computation at least once anyway).

This simplify the code a lot, and clarify why this kind of computation is
needed.

The possible drawback compared to the previous code are:
- if the operation happens in a loop, we will end up doing it multiple time,
- the C code to detect entry of interest have been dropped, for now. It will be
  re-introduced later, with a processing code directly in C for even faster
  operation.

Differential Revision: https://phab.mercurial-scm.org/D11507

# Infinite push
#
# Copyright 2016 Facebook, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from __future__ import absolute_import


class indexapi(object):
    """Class that manages access to infinitepush index.

    This class is a context manager and all write operations (like
    deletebookmarks, addbookmark etc) should use `with` statement:

      with index:
          index.deletebookmarks(...)
          ...
    """

    def __init__(self):
        """Initializes the metadata store connection."""

    def close(self):
        """Cleans up the metadata store connection."""

    def __enter__(self):
        return self

    def __exit__(self, exc_type, exc_val, exc_tb):
        pass

    def addbundle(self, bundleid, nodesctx):
        """Takes a bundleid and a list of node contexts for each node
        in that bundle and records that."""
        raise NotImplementedError()

    def addbookmark(self, bookmark, node):
        """Takes a bookmark name and hash, and records mapping in the metadata
        store."""
        raise NotImplementedError()

    def addmanybookmarks(self, bookmarks):
        """Takes a dict with mapping from bookmark to hash and records mapping
        in the metadata store."""
        raise NotImplementedError()

    def deletebookmarks(self, patterns):
        """Accepts list of bookmarks and deletes them."""
        raise NotImplementedError()

    def getbundle(self, node):
        """Returns the bundleid for the bundle that contains the given node."""
        raise NotImplementedError()

    def getnode(self, bookmark):
        """Returns the node for the given bookmark. None if it doesn't exist."""
        raise NotImplementedError()

    def getbookmarks(self, query):
        """Returns bookmarks that match the query"""
        raise NotImplementedError()

    def saveoptionaljsonmetadata(self, node, jsonmetadata):
        """Saves optional metadata for a given node"""
        raise NotImplementedError()


class indexexception(Exception):
    pass