comparison mercurial/localrepo.py @ 45373:d7dcc75a3eae

localrepo: move requirements constant to requirements module

We now have a dedicated module for requirements constant, let's move the ones in
localrepo there.

Differential Revision: https://phab.mercurial-scm.org/D8918

45372:77b8588dd84e

        return changegroup.makechangegroup(self._repo, outgoing, b'01', source)

    # End of baselegacywirecommands interface.


# Increment the sub-version when the revlog v2 format changes to lock out old
# clients.
REVLOGV2_REQUIREMENT = b'exp-revlogv2.1'

# A repository with the sparserevlog feature will have delta chains that
# can spread over a larger span. Sparse reading cuts these large spans into
# pieces, so that each piece isn't too big.
# Without the sparserevlog capability, reading from the repository could use
# huge amounts of memory, because the whole span would be read at once,
# including all the intermediate revisions that aren't pertinent for the chain.
# This is why once a repository has enabled sparse-read, it becomes required.
SPARSEREVLOG_REQUIREMENT = b'sparserevlog'

# A repository with the sidedataflag requirement will allow to store extra
# information for revision without altering their original hashes.
SIDEDATA_REQUIREMENT = b'exp-sidedata-flag'

# A repository with the the copies-sidedata-changeset requirement will store
# copies related information in changeset's sidedata.
COPIESSDC_REQUIREMENT = b'exp-copies-sidedata-changeset'

# The repository use persistent nodemap for the changelog and the manifest.
NODEMAP_REQUIREMENT = b'persistent-nodemap'

# Functions receiving (ui, features) that extensions can register to impact
# the ability to load repositories with custom requirements. Only
# functions defined in loaded extensions are called.
#
# The function receives a set of requirement strings that the repository

    # In the absence of another requirement superseding a revlog-related
    # requirement, we have to assume the repo is using revlog version 0.
    # This revlog format is super old and we don't bother trying to parse
    # opener options for it because those options wouldn't do anything
    # meaningful on such old repos.
    if b'revlogv1' in requirements or REVLOGV2_REQUIREMENT in requirements:
        options.update(resolverevlogstorevfsoptions(ui, requirements, features))
    else:  # explicitly mark repo as using revlogv0
        options[b'revlogv0'] = True

    if COPIESSDC_REQUIREMENT in requirements:
        options[b'copies-storage'] = b'changeset-sidedata'
    else:
        writecopiesto = ui.config(b'experimental', b'copies.write-to')
        copiesextramode = (b'changeset-only', b'compatibility')
        if writecopiesto in copiesextramode:

    options = {}
    options[b'flagprocessors'] = {}

    if b'revlogv1' in requirements:
        options[b'revlogv1'] = True
    if REVLOGV2_REQUIREMENT in requirements:
        options[b'revlogv2'] = True

    if b'generaldelta' in requirements:
        options[b'generaldelta'] = True

    srmingapsize = ui.configbytes(b'experimental', b'sparse-read.min-gap-size')
    options[b'with-sparse-read'] = withsparseread
    options[b'sparse-read-density-threshold'] = srdensitythres
    options[b'sparse-read-min-gap-size'] = srmingapsize

    sparserevlog = SPARSEREVLOG_REQUIREMENT in requirements
    options[b'sparse-revlog'] = sparserevlog
    if sparserevlog:
        options[b'generaldelta'] = True

    sidedata = SIDEDATA_REQUIREMENT in requirements
    options[b'side-data'] = sidedata

    maxchainlen = None
    if sparserevlog:
        maxchainlen = revlogconst.SPARSE_REVLOG_MAX_CHAIN_LENGTH

    if requirementsmod.NARROW_REQUIREMENT in requirements:
        options[b'enableellipsis'] = True

    if ui.configbool(b'experimental', b'rust.index'):
        options[b'rust.index'] = True
    if NODEMAP_REQUIREMENT in requirements:
        options[b'persistent-nodemap'] = True
    if ui.configbool(b'storage', b'revlog.nodemap.mmap'):
        options[b'persistent-nodemap.mmap'] = True
    epnm = ui.config(b'storage', b'revlog.nodemap.mode')
    options[b'persistent-nodemap.mode'] = epnm

    #    chains), and the code was deleted in 4.6.
    supportedformats = {
        b'revlogv1',
        b'generaldelta',
        requirementsmod.TREEMANIFEST_REQUIREMENT,
        COPIESSDC_REQUIREMENT,
        REVLOGV2_REQUIREMENT,
        SIDEDATA_REQUIREMENT,
        SPARSEREVLOG_REQUIREMENT,
        NODEMAP_REQUIREMENT,
        bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT,
    }
    _basesupported = supportedformats | {
        b'store',
        b'fncache',

        self._sparsematchercache = {}

        self._extrafilterid = repoview.extrafilter(ui)

        self.filecopiesmode = None
        if COPIESSDC_REQUIREMENT in self.requirements:
            self.filecopiesmode = b'changeset-sidedata'

    def _getvfsward(self, origfunc):
        """build a ward for self.vfs"""
        rref = weakref.ref(self)

        requirements.add(b'exp-compression-%s' % compengine)

    if scmutil.gdinitconfig(ui):
        requirements.add(b'generaldelta')
        if ui.configbool(b'format', b'sparse-revlog'):
            requirements.add(SPARSEREVLOG_REQUIREMENT)

    # experimental config: format.exp-use-side-data
    if ui.configbool(b'format', b'exp-use-side-data'):
        requirements.add(SIDEDATA_REQUIREMENT)
    # experimental config: format.exp-use-copies-side-data-changeset
    if ui.configbool(b'format', b'exp-use-copies-side-data-changeset'):
        requirements.add(SIDEDATA_REQUIREMENT)
        requirements.add(COPIESSDC_REQUIREMENT)
    if ui.configbool(b'experimental', b'treemanifest'):
        requirements.add(requirementsmod.TREEMANIFEST_REQUIREMENT)

    revlogv2 = ui.config(b'experimental', b'revlogv2')
    if revlogv2 == b'enable-unstable-format-and-corrupt-my-data':
        requirements.remove(b'revlogv1')
        # generaldelta is implied by revlogv2.
        requirements.discard(b'generaldelta')
        requirements.add(REVLOGV2_REQUIREMENT)
    # experimental config: format.internal-phase
    if ui.configbool(b'format', b'internal-phase'):
        requirements.add(requirementsmod.INTERNAL_PHASE_REQUIREMENT)

    if createopts.get(b'narrowfiles'):

    if ui.configbool(b'format', b'bookmarks-in-store'):
        requirements.add(bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT)

    if ui.configbool(b'format', b'use-persistent-nodemap'):
        requirements.add(NODEMAP_REQUIREMENT)

    return requirements


def checkrequirementscompat(ui, requirements):

45373:d7dcc75a3eae

        return changegroup.makechangegroup(self._repo, outgoing, b'01', source)

    # End of baselegacywirecommands interface.


# Functions receiving (ui, features) that extensions can register to impact
# the ability to load repositories with custom requirements. Only
# functions defined in loaded extensions are called.
#
# The function receives a set of requirement strings that the repository

    # In the absence of another requirement superseding a revlog-related
    # requirement, we have to assume the repo is using revlog version 0.
    # This revlog format is super old and we don't bother trying to parse
    # opener options for it because those options wouldn't do anything
    # meaningful on such old repos.
    if (
        b'revlogv1' in requirements
        or requirementsmod.REVLOGV2_REQUIREMENT in requirements
    ):
        options.update(resolverevlogstorevfsoptions(ui, requirements, features))
    else:  # explicitly mark repo as using revlogv0
        options[b'revlogv0'] = True

    if requirementsmod.COPIESSDC_REQUIREMENT in requirements:
        options[b'copies-storage'] = b'changeset-sidedata'
    else:
        writecopiesto = ui.config(b'experimental', b'copies.write-to')
        copiesextramode = (b'changeset-only', b'compatibility')
        if writecopiesto in copiesextramode:

    options = {}
    options[b'flagprocessors'] = {}

    if b'revlogv1' in requirements:
        options[b'revlogv1'] = True
    if requirementsmod.REVLOGV2_REQUIREMENT in requirements:
        options[b'revlogv2'] = True

    if b'generaldelta' in requirements:
        options[b'generaldelta'] = True

    srmingapsize = ui.configbytes(b'experimental', b'sparse-read.min-gap-size')
    options[b'with-sparse-read'] = withsparseread
    options[b'sparse-read-density-threshold'] = srdensitythres
    options[b'sparse-read-min-gap-size'] = srmingapsize

    sparserevlog = requirementsmod.SPARSEREVLOG_REQUIREMENT in requirements
    options[b'sparse-revlog'] = sparserevlog
    if sparserevlog:
        options[b'generaldelta'] = True

    sidedata = requirementsmod.SIDEDATA_REQUIREMENT in requirements
    options[b'side-data'] = sidedata

    maxchainlen = None
    if sparserevlog:
        maxchainlen = revlogconst.SPARSE_REVLOG_MAX_CHAIN_LENGTH

    if requirementsmod.NARROW_REQUIREMENT in requirements:
        options[b'enableellipsis'] = True

    if ui.configbool(b'experimental', b'rust.index'):
        options[b'rust.index'] = True
    if requirementsmod.NODEMAP_REQUIREMENT in requirements:
        options[b'persistent-nodemap'] = True
    if ui.configbool(b'storage', b'revlog.nodemap.mmap'):
        options[b'persistent-nodemap.mmap'] = True
    epnm = ui.config(b'storage', b'revlog.nodemap.mode')
    options[b'persistent-nodemap.mode'] = epnm

    #    chains), and the code was deleted in 4.6.
    supportedformats = {
        b'revlogv1',
        b'generaldelta',
        requirementsmod.TREEMANIFEST_REQUIREMENT,
        requirementsmod.COPIESSDC_REQUIREMENT,
        requirementsmod.REVLOGV2_REQUIREMENT,
        requirementsmod.SIDEDATA_REQUIREMENT,
        requirementsmod.SPARSEREVLOG_REQUIREMENT,
        requirementsmod.NODEMAP_REQUIREMENT,
        bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT,
    }
    _basesupported = supportedformats | {
        b'store',
        b'fncache',

        self._sparsematchercache = {}

        self._extrafilterid = repoview.extrafilter(ui)

        self.filecopiesmode = None
        if requirementsmod.COPIESSDC_REQUIREMENT in self.requirements:
            self.filecopiesmode = b'changeset-sidedata'

    def _getvfsward(self, origfunc):
        """build a ward for self.vfs"""
        rref = weakref.ref(self)

        requirements.add(b'exp-compression-%s' % compengine)

    if scmutil.gdinitconfig(ui):
        requirements.add(b'generaldelta')
        if ui.configbool(b'format', b'sparse-revlog'):
            requirements.add(requirementsmod.SPARSEREVLOG_REQUIREMENT)

    # experimental config: format.exp-use-side-data
    if ui.configbool(b'format', b'exp-use-side-data'):
        requirements.add(requirementsmod.SIDEDATA_REQUIREMENT)
    # experimental config: format.exp-use-copies-side-data-changeset
    if ui.configbool(b'format', b'exp-use-copies-side-data-changeset'):
        requirements.add(requirementsmod.SIDEDATA_REQUIREMENT)
        requirements.add(requirementsmod.COPIESSDC_REQUIREMENT)
    if ui.configbool(b'experimental', b'treemanifest'):
        requirements.add(requirementsmod.TREEMANIFEST_REQUIREMENT)

    revlogv2 = ui.config(b'experimental', b'revlogv2')
    if revlogv2 == b'enable-unstable-format-and-corrupt-my-data':
        requirements.remove(b'revlogv1')
        # generaldelta is implied by revlogv2.
        requirements.discard(b'generaldelta')
        requirements.add(requirementsmod.REVLOGV2_REQUIREMENT)
    # experimental config: format.internal-phase
    if ui.configbool(b'format', b'internal-phase'):
        requirements.add(requirementsmod.INTERNAL_PHASE_REQUIREMENT)

    if createopts.get(b'narrowfiles'):

    if ui.configbool(b'format', b'bookmarks-in-store'):
        requirements.add(bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT)

    if ui.configbool(b'format', b'use-persistent-nodemap'):
        requirements.add(requirementsmod.NODEMAP_REQUIREMENT)

    return requirements


def checkrequirementscompat(ui, requirements):