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# upgrade.py - functions for in place upgrade of Mercurial repository
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#
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# Copyright (c) 2016-present, Gregory Szorc
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import stat
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from .i18n import _
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from .pycompat import getattr
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from . import (
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changelog,
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copies,
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error,
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filelog,
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hg,
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localrepo,
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manifest,
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pycompat,
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revlog,
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scmutil,
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util,
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vfs as vfsmod,
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)
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from .utils import compression
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# list of requirements that request a clone of all revlog if added/removed
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RECLONES_REQUIREMENTS = {
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b'generaldelta',
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localrepo.SPARSEREVLOG_REQUIREMENT,
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}
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def requiredsourcerequirements(repo):
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"""Obtain requirements required to be present to upgrade a repo.
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An upgrade will not be allowed if the repository doesn't have the
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requirements returned by this function.
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"""
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return {
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# Introduced in Mercurial 0.9.2.
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b'revlogv1',
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# Introduced in Mercurial 0.9.2.
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b'store',
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}
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def blocksourcerequirements(repo):
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"""Obtain requirements that will prevent an upgrade from occurring.
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An upgrade cannot be performed if the source repository contains a
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requirements in the returned set.
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"""
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return {
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# The upgrade code does not yet support these experimental features.
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# This is an artificial limitation.
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b'treemanifest',
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# This was a precursor to generaldelta and was never enabled by default.
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# It should (hopefully) not exist in the wild.
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b'parentdelta',
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# Upgrade should operate on the actual store, not the shared link.
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b'shared',
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}
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def supportremovedrequirements(repo):
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"""Obtain requirements that can be removed during an upgrade.
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If an upgrade were to create a repository that dropped a requirement,
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the dropped requirement must appear in the returned set for the upgrade
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to be allowed.
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"""
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supported = {
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localrepo.SPARSEREVLOG_REQUIREMENT,
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localrepo.SIDEDATA_REQUIREMENT,
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localrepo.COPIESSDC_REQUIREMENT,
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}
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for name in compression.compengines:
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engine = compression.compengines[name]
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if engine.available() and engine.revlogheader():
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supported.add(b'exp-compression-%s' % name)
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if engine.name() == b'zstd':
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supported.add(b'revlog-compression-zstd')
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return supported
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def supporteddestrequirements(repo):
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"""Obtain requirements that upgrade supports in the destination.
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If the result of the upgrade would create requirements not in this set,
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the upgrade is disallowed.
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Extensions should monkeypatch this to add their custom requirements.
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"""
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supported = {
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b'dotencode',
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b'fncache',
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b'generaldelta',
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b'revlogv1',
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b'store',
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localrepo.SPARSEREVLOG_REQUIREMENT,
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localrepo.SIDEDATA_REQUIREMENT,
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localrepo.COPIESSDC_REQUIREMENT,
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}
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for name in compression.compengines:
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engine = compression.compengines[name]
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if engine.available() and engine.revlogheader():
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supported.add(b'exp-compression-%s' % name)
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if engine.name() == b'zstd':
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supported.add(b'revlog-compression-zstd')
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return supported
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def allowednewrequirements(repo):
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"""Obtain requirements that can be added to a repository during upgrade.
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This is used to disallow proposed requirements from being added when
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they weren't present before.
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We use a list of allowed requirement additions instead of a list of known
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bad additions because the whitelist approach is safer and will prevent
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future, unknown requirements from accidentally being added.
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"""
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supported = {
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b'dotencode',
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b'fncache',
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b'generaldelta',
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localrepo.SPARSEREVLOG_REQUIREMENT,
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localrepo.SIDEDATA_REQUIREMENT,
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localrepo.COPIESSDC_REQUIREMENT,
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}
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for name in compression.compengines:
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engine = compression.compengines[name]
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if engine.available() and engine.revlogheader():
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supported.add(b'exp-compression-%s' % name)
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if engine.name() == b'zstd':
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supported.add(b'revlog-compression-zstd')
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return supported
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def preservedrequirements(repo):
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return set()
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deficiency = b'deficiency'
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optimisation = b'optimization'
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class improvement(object):
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"""Represents an improvement that can be made as part of an upgrade.
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The following attributes are defined on each instance:
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name
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Machine-readable string uniquely identifying this improvement. It
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will be mapped to an action later in the upgrade process.
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type
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Either ``deficiency`` or ``optimisation``. A deficiency is an obvious
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problem. An optimization is an action (sometimes optional) that
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can be taken to further improve the state of the repository.
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description
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Message intended for humans explaining the improvement in more detail,
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including the implications of it. For ``deficiency`` types, should be
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worded in the present tense. For ``optimisation`` types, should be
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worded in the future tense.
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upgrademessage
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Message intended for humans explaining what an upgrade addressing this
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issue will do. Should be worded in the future tense.
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"""
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def __init__(self, name, type, description, upgrademessage):
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self.name = name
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self.type = type
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self.description = description
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self.upgrademessage = upgrademessage
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def __eq__(self, other):
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if not isinstance(other, improvement):
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# This is what python tell use to do
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return NotImplemented
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return self.name == other.name
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def __ne__(self, other):
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return not (self == other)
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def __hash__(self):
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return hash(self.name)
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allformatvariant = []
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def registerformatvariant(cls):
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allformatvariant.append(cls)
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return cls
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class formatvariant(improvement):
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"""an improvement subclass dedicated to repository format"""
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type = deficiency
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### The following attributes should be defined for each class:
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# machine-readable string uniquely identifying this improvement. it will be
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# mapped to an action later in the upgrade process.
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name = None
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# message intended for humans explaining the improvement in more detail,
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# including the implications of it ``deficiency`` types, should be worded
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# in the present tense.
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description = None
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# message intended for humans explaining what an upgrade addressing this
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# issue will do. should be worded in the future tense.
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upgrademessage = None
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# value of current Mercurial default for new repository
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default = None
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def __init__(self):
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raise NotImplementedError()
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@staticmethod
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def fromrepo(repo):
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"""current value of the variant in the repository"""
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raise NotImplementedError()
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@staticmethod
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def fromconfig(repo):
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"""current value of the variant in the configuration"""
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raise NotImplementedError()
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class requirementformatvariant(formatvariant):
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"""formatvariant based on a 'requirement' name.
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Many format variant are controlled by a 'requirement'. We define a small
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subclass to factor the code.
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"""
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# the requirement that control this format variant
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_requirement = None
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@staticmethod
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def _newreporequirements(ui):
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return localrepo.newreporequirements(
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ui, localrepo.defaultcreateopts(ui)
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)
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@classmethod
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def fromrepo(cls, repo):
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assert cls._requirement is not None
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return cls._requirement in repo.requirements
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@classmethod
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def fromconfig(cls, repo):
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assert cls._requirement is not None
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return cls._requirement in cls._newreporequirements(repo.ui)
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@registerformatvariant
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class fncache(requirementformatvariant):
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name = b'fncache'
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_requirement = b'fncache'
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default = True
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description = _(
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b'long and reserved filenames may not work correctly; '
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b'repository performance is sub-optimal'
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)
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upgrademessage = _(
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b'repository will be more resilient to storing '
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b'certain paths and performance of certain '
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b'operations should be improved'
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)
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@registerformatvariant
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class dotencode(requirementformatvariant):
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name = b'dotencode'
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_requirement = b'dotencode'
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default = True
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description = _(
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b'storage of filenames beginning with a period or '
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b'space may not work correctly'
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)
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upgrademessage = _(
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b'repository will be better able to store files '
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b'beginning with a space or period'
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)
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@registerformatvariant
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class generaldelta(requirementformatvariant):
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name = b'generaldelta'
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_requirement = b'generaldelta'
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default = True
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description = _(
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b'deltas within internal storage are unable to '
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b'choose optimal revisions; repository is larger and '
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b'slower than it could be; interaction with other '
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b'repositories may require extra network and CPU '
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b'resources, making "hg push" and "hg pull" slower'
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)
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upgrademessage = _(
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b'repository storage will be able to create '
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b'optimal deltas; new repository data will be '
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b'smaller and read times should decrease; '
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b'interacting with other repositories using this '
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b'storage model should require less network and '
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b'CPU resources, making "hg push" and "hg pull" '
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b'faster'
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)
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@registerformatvariant
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class sparserevlog(requirementformatvariant):
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name = b'sparserevlog'
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_requirement = localrepo.SPARSEREVLOG_REQUIREMENT
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default = True
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description = _(
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b'in order to limit disk reading and memory usage on older '
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b'version, the span of a delta chain from its root to its '
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b'end is limited, whatever the relevant data in this span. '
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b'This can severly limit Mercurial ability to build good '
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b'chain of delta resulting is much more storage space being '
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b'taken and limit reusability of on disk delta during '
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b'exchange.'
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)
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upgrademessage = _(
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b'Revlog supports delta chain with more unused data '
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b'between payload. These gaps will be skipped at read '
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b'time. This allows for better delta chains, making a '
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b'better compression and faster exchange with server.'
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)
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@registerformatvariant
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class sidedata(requirementformatvariant):
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name = b'sidedata'
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_requirement = localrepo.SIDEDATA_REQUIREMENT
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default = False
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description = _(
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b'Allows storage of extra data alongside a revision, '
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b'unlocking various caching options.'
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)
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upgrademessage = _(b'Allows storage of extra data alongside a revision.')
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@registerformatvariant
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class copiessdc(requirementformatvariant):
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name = b'copies-sdc'
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_requirement = localrepo.COPIESSDC_REQUIREMENT
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default = False
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description = _(b'Stores copies information alongside changesets.')
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upgrademessage = _(
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b'Allows to use more efficient algorithm to deal with ' b'copy tracing.'
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)
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@registerformatvariant
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class removecldeltachain(formatvariant):
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name = b'plain-cl-delta'
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default = True
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description = _(
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b'changelog storage is using deltas instead of '
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b'raw entries; changelog reading and any '
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b'operation relying on changelog data are slower '
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b'than they could be'
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)
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upgrademessage = _(
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b'changelog storage will be reformated to '
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b'store raw entries; changelog reading will be '
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b'faster; changelog size may be reduced'
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)
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@staticmethod
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def fromrepo(repo):
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# Mercurial 4.0 changed changelogs to not use delta chains. Search for
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# changelogs with deltas.
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cl = repo.changelog
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chainbase = cl.chainbase
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return all(rev == chainbase(rev) for rev in cl)
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@staticmethod
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def fromconfig(repo):
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return True
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@registerformatvariant
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class compressionengine(formatvariant):
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name = b'compression'
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default = b'zlib'
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description = _(
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b'Compresion algorithm used to compress data. '
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b'Some engine are faster than other'
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)
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upgrademessage = _(
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b'revlog content will be recompressed with the new algorithm.'
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)
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@classmethod
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def fromrepo(cls, repo):
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# we allow multiple compression engine requirement to co-exist because
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# strickly speaking, revlog seems to support mixed compression style.
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#
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# The compression used for new entries will be "the last one"
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compression = b'zlib'
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for req in repo.requirements:
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prefix = req.startswith
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if prefix(b'revlog-compression-') or prefix(b'exp-compression-'):
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compression = req.split(b'-', 2)[2]
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return compression
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@classmethod
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def fromconfig(cls, repo):
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return repo.ui.config(b'format', b'revlog-compression')
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@registerformatvariant
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class compressionlevel(formatvariant):
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name = b'compression-level'
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default = b'default'
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description = _(b'compression level')
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upgrademessage = _(b'revlog content will be recompressed')
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@classmethod
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def fromrepo(cls, repo):
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comp = compressionengine.fromrepo(repo)
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level = None
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if comp == b'zlib':
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level = repo.ui.configint(b'storage', b'revlog.zlib.level')
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elif comp == b'zstd':
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level = repo.ui.configint(b'storage', b'revlog.zstd.level')
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if level is None:
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return b'default'
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return bytes(level)
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@classmethod
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def fromconfig(cls, repo):
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comp = compressionengine.fromconfig(repo)
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level = None
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if comp == b'zlib':
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level = repo.ui.configint(b'storage', b'revlog.zlib.level')
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elif comp == b'zstd':
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level = repo.ui.configint(b'storage', b'revlog.zstd.level')
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if level is None:
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return b'default'
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return bytes(level)
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|
def finddeficiencies(repo):
|
|
|
"""returns a list of deficiencies that the repo suffer from"""
|
|
|
deficiencies = []
|
|
|
|
|
|
# We could detect lack of revlogv1 and store here, but they were added
|
|
|
# in 0.9.2 and we don't support upgrading repos without these
|
|
|
# requirements, so let's not bother.
|
|
|
|
|
|
for fv in allformatvariant:
|
|
|
if not fv.fromrepo(repo):
|
|
|
deficiencies.append(fv)
|
|
|
|
|
|
return deficiencies
|
|
|
|
|
|
|
|
|
# search without '-' to support older form on newer client.
|
|
|
#
|
|
|
# We don't enforce backward compatibility for debug command so this
|
|
|
# might eventually be dropped. However, having to use two different
|
|
|
# forms in script when comparing result is anoying enough to add
|
|
|
# backward compatibility for a while.
|
|
|
legacy_opts_map = {
|
|
|
b'redeltaparent': b're-delta-parent',
|
|
|
b'redeltamultibase': b're-delta-multibase',
|
|
|
b'redeltaall': b're-delta-all',
|
|
|
b'redeltafulladd': b're-delta-fulladd',
|
|
|
}
|
|
|
|
|
|
|
|
|
def findoptimizations(repo):
|
|
|
"""Determine optimisation that could be used during upgrade"""
|
|
|
# These are unconditionally added. There is logic later that figures out
|
|
|
# which ones to apply.
|
|
|
optimizations = []
|
|
|
|
|
|
optimizations.append(
|
|
|
improvement(
|
|
|
name=b're-delta-parent',
|
|
|
type=optimisation,
|
|
|
description=_(
|
|
|
b'deltas within internal storage will be recalculated to '
|
|
|
b'choose an optimal base revision where this was not '
|
|
|
b'already done; the size of the repository may shrink and '
|
|
|
b'various operations may become faster; the first time '
|
|
|
b'this optimization is performed could slow down upgrade '
|
|
|
b'execution considerably; subsequent invocations should '
|
|
|
b'not run noticeably slower'
|
|
|
),
|
|
|
upgrademessage=_(
|
|
|
b'deltas within internal storage will choose a new '
|
|
|
b'base revision if needed'
|
|
|
),
|
|
|
)
|
|
|
)
|
|
|
|
|
|
optimizations.append(
|
|
|
improvement(
|
|
|
name=b're-delta-multibase',
|
|
|
type=optimisation,
|
|
|
description=_(
|
|
|
b'deltas within internal storage will be recalculated '
|
|
|
b'against multiple base revision and the smallest '
|
|
|
b'difference will be used; the size of the repository may '
|
|
|
b'shrink significantly when there are many merges; this '
|
|
|
b'optimization will slow down execution in proportion to '
|
|
|
b'the number of merges in the repository and the amount '
|
|
|
b'of files in the repository; this slow down should not '
|
|
|
b'be significant unless there are tens of thousands of '
|
|
|
b'files and thousands of merges'
|
|
|
),
|
|
|
upgrademessage=_(
|
|
|
b'deltas within internal storage will choose an '
|
|
|
b'optimal delta by computing deltas against multiple '
|
|
|
b'parents; may slow down execution time '
|
|
|
b'significantly'
|
|
|
),
|
|
|
)
|
|
|
)
|
|
|
|
|
|
optimizations.append(
|
|
|
improvement(
|
|
|
name=b're-delta-all',
|
|
|
type=optimisation,
|
|
|
description=_(
|
|
|
b'deltas within internal storage will always be '
|
|
|
b'recalculated without reusing prior deltas; this will '
|
|
|
b'likely make execution run several times slower; this '
|
|
|
b'optimization is typically not needed'
|
|
|
),
|
|
|
upgrademessage=_(
|
|
|
b'deltas within internal storage will be fully '
|
|
|
b'recomputed; this will likely drastically slow down '
|
|
|
b'execution time'
|
|
|
),
|
|
|
)
|
|
|
)
|
|
|
|
|
|
optimizations.append(
|
|
|
improvement(
|
|
|
name=b're-delta-fulladd',
|
|
|
type=optimisation,
|
|
|
description=_(
|
|
|
b'every revision will be re-added as if it was new '
|
|
|
b'content. It will go through the full storage '
|
|
|
b'mechanism giving extensions a chance to process it '
|
|
|
b'(eg. lfs). This is similar to "re-delta-all" but even '
|
|
|
b'slower since more logic is involved.'
|
|
|
),
|
|
|
upgrademessage=_(
|
|
|
b'each revision will be added as new content to the '
|
|
|
b'internal storage; this will likely drastically slow '
|
|
|
b'down execution time, but some extensions might need '
|
|
|
b'it'
|
|
|
),
|
|
|
)
|
|
|
)
|
|
|
|
|
|
return optimizations
|
|
|
|
|
|
|
|
|
def determineactions(repo, deficiencies, sourcereqs, destreqs):
|
|
|
"""Determine upgrade actions that will be performed.
|
|
|
|
|
|
Given a list of improvements as returned by ``finddeficiencies`` and
|
|
|
``findoptimizations``, determine the list of upgrade actions that
|
|
|
will be performed.
|
|
|
|
|
|
The role of this function is to filter improvements if needed, apply
|
|
|
recommended optimizations from the improvements list that make sense,
|
|
|
etc.
|
|
|
|
|
|
Returns a list of action names.
|
|
|
"""
|
|
|
newactions = []
|
|
|
|
|
|
knownreqs = supporteddestrequirements(repo)
|
|
|
|
|
|
for d in deficiencies:
|
|
|
name = d.name
|
|
|
|
|
|
# If the action is a requirement that doesn't show up in the
|
|
|
# destination requirements, prune the action.
|
|
|
if name in knownreqs and name not in destreqs:
|
|
|
continue
|
|
|
|
|
|
newactions.append(d)
|
|
|
|
|
|
# FUTURE consider adding some optimizations here for certain transitions.
|
|
|
# e.g. adding generaldelta could schedule parent redeltas.
|
|
|
|
|
|
return newactions
|
|
|
|
|
|
|
|
|
def _revlogfrompath(repo, path):
|
|
|
"""Obtain a revlog from a repo path.
|
|
|
|
|
|
An instance of the appropriate class is returned.
|
|
|
"""
|
|
|
if path == b'00changelog.i':
|
|
|
return changelog.changelog(repo.svfs)
|
|
|
elif path.endswith(b'00manifest.i'):
|
|
|
mandir = path[: -len(b'00manifest.i')]
|
|
|
return manifest.manifestrevlog(repo.svfs, tree=mandir)
|
|
|
else:
|
|
|
# reverse of "/".join(("data", path + ".i"))
|
|
|
return filelog.filelog(repo.svfs, path[5:-2])
|
|
|
|
|
|
|
|
|
def _copyrevlog(tr, destrepo, oldrl, unencodedname):
|
|
|
"""copy all relevant files for `oldrl` into `destrepo` store
|
|
|
|
|
|
Files are copied "as is" without any transformation. The copy is performed
|
|
|
without extra checks. Callers are responsible for making sure the copied
|
|
|
content is compatible with format of the destination repository.
|
|
|
"""
|
|
|
oldrl = getattr(oldrl, '_revlog', oldrl)
|
|
|
newrl = _revlogfrompath(destrepo, unencodedname)
|
|
|
newrl = getattr(newrl, '_revlog', newrl)
|
|
|
|
|
|
oldvfs = oldrl.opener
|
|
|
newvfs = newrl.opener
|
|
|
oldindex = oldvfs.join(oldrl.indexfile)
|
|
|
newindex = newvfs.join(newrl.indexfile)
|
|
|
olddata = oldvfs.join(oldrl.datafile)
|
|
|
newdata = newvfs.join(newrl.datafile)
|
|
|
|
|
|
with newvfs(newrl.indexfile, b'w'):
|
|
|
pass # create all the directories
|
|
|
|
|
|
util.copyfile(oldindex, newindex)
|
|
|
copydata = oldrl.opener.exists(oldrl.datafile)
|
|
|
if copydata:
|
|
|
util.copyfile(olddata, newdata)
|
|
|
|
|
|
if not (
|
|
|
unencodedname.endswith(b'00changelog.i')
|
|
|
or unencodedname.endswith(b'00manifest.i')
|
|
|
):
|
|
|
destrepo.svfs.fncache.add(unencodedname)
|
|
|
if copydata:
|
|
|
destrepo.svfs.fncache.add(unencodedname[:-2] + b'.d')
|
|
|
|
|
|
|
|
|
UPGRADE_CHANGELOG = object()
|
|
|
UPGRADE_MANIFEST = object()
|
|
|
UPGRADE_FILELOG = object()
|
|
|
|
|
|
UPGRADE_ALL_REVLOGS = frozenset(
|
|
|
[UPGRADE_CHANGELOG, UPGRADE_MANIFEST, UPGRADE_FILELOG]
|
|
|
)
|
|
|
|
|
|
|
|
|
def getsidedatacompanion(srcrepo, dstrepo):
|
|
|
sidedatacompanion = None
|
|
|
removedreqs = srcrepo.requirements - dstrepo.requirements
|
|
|
addedreqs = dstrepo.requirements - srcrepo.requirements
|
|
|
if localrepo.SIDEDATA_REQUIREMENT in removedreqs:
|
|
|
|
|
|
def sidedatacompanion(rl, rev):
|
|
|
rl = getattr(rl, '_revlog', rl)
|
|
|
if rl.flags(rev) & revlog.REVIDX_SIDEDATA:
|
|
|
return True, (), {}
|
|
|
return False, (), {}
|
|
|
|
|
|
elif localrepo.COPIESSDC_REQUIREMENT in addedreqs:
|
|
|
sidedatacompanion = copies.getsidedataadder(srcrepo, dstrepo)
|
|
|
elif localrepo.COPIESSDC_REQUIREMENT in removedreqs:
|
|
|
sidedatacompanion = copies.getsidedataremover(srcrepo, dstrepo)
|
|
|
return sidedatacompanion
|
|
|
|
|
|
|
|
|
def matchrevlog(revlogfilter, entry):
|
|
|
"""check is a revlog is selected for cloning
|
|
|
|
|
|
The store entry is checked against the passed filter"""
|
|
|
if entry.endswith(b'00changelog.i'):
|
|
|
return UPGRADE_CHANGELOG in revlogfilter
|
|
|
elif entry.endswith(b'00manifest.i'):
|
|
|
return UPGRADE_MANIFEST in revlogfilter
|
|
|
return UPGRADE_FILELOG in revlogfilter
|
|
|
|
|
|
|
|
|
def _clonerevlogs(
|
|
|
ui,
|
|
|
srcrepo,
|
|
|
dstrepo,
|
|
|
tr,
|
|
|
deltareuse,
|
|
|
forcedeltabothparents,
|
|
|
revlogs=UPGRADE_ALL_REVLOGS,
|
|
|
):
|
|
|
"""Copy revlogs between 2 repos."""
|
|
|
revcount = 0
|
|
|
srcsize = 0
|
|
|
srcrawsize = 0
|
|
|
dstsize = 0
|
|
|
fcount = 0
|
|
|
frevcount = 0
|
|
|
fsrcsize = 0
|
|
|
frawsize = 0
|
|
|
fdstsize = 0
|
|
|
mcount = 0
|
|
|
mrevcount = 0
|
|
|
msrcsize = 0
|
|
|
mrawsize = 0
|
|
|
mdstsize = 0
|
|
|
crevcount = 0
|
|
|
csrcsize = 0
|
|
|
crawsize = 0
|
|
|
cdstsize = 0
|
|
|
|
|
|
alldatafiles = list(srcrepo.store.walk())
|
|
|
|
|
|
# Perform a pass to collect metadata. This validates we can open all
|
|
|
# source files and allows a unified progress bar to be displayed.
|
|
|
for unencoded, encoded, size in alldatafiles:
|
|
|
if unencoded.endswith(b'.d'):
|
|
|
continue
|
|
|
|
|
|
rl = _revlogfrompath(srcrepo, unencoded)
|
|
|
|
|
|
info = rl.storageinfo(
|
|
|
exclusivefiles=True,
|
|
|
revisionscount=True,
|
|
|
trackedsize=True,
|
|
|
storedsize=True,
|
|
|
)
|
|
|
|
|
|
revcount += info[b'revisionscount'] or 0
|
|
|
datasize = info[b'storedsize'] or 0
|
|
|
rawsize = info[b'trackedsize'] or 0
|
|
|
|
|
|
srcsize += datasize
|
|
|
srcrawsize += rawsize
|
|
|
|
|
|
# This is for the separate progress bars.
|
|
|
if isinstance(rl, changelog.changelog):
|
|
|
crevcount += len(rl)
|
|
|
csrcsize += datasize
|
|
|
crawsize += rawsize
|
|
|
elif isinstance(rl, manifest.manifestrevlog):
|
|
|
mcount += 1
|
|
|
mrevcount += len(rl)
|
|
|
msrcsize += datasize
|
|
|
mrawsize += rawsize
|
|
|
elif isinstance(rl, filelog.filelog):
|
|
|
fcount += 1
|
|
|
frevcount += len(rl)
|
|
|
fsrcsize += datasize
|
|
|
frawsize += rawsize
|
|
|
else:
|
|
|
error.ProgrammingError(b'unknown revlog type')
|
|
|
|
|
|
if not revcount:
|
|
|
return
|
|
|
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'migrating %d total revisions (%d in filelogs, %d in manifests, '
|
|
|
b'%d in changelog)\n'
|
|
|
)
|
|
|
% (revcount, frevcount, mrevcount, crevcount)
|
|
|
)
|
|
|
ui.write(
|
|
|
_(b'migrating %s in store; %s tracked data\n')
|
|
|
% ((util.bytecount(srcsize), util.bytecount(srcrawsize)))
|
|
|
)
|
|
|
|
|
|
# Used to keep track of progress.
|
|
|
progress = None
|
|
|
|
|
|
def oncopiedrevision(rl, rev, node):
|
|
|
progress.increment()
|
|
|
|
|
|
sidedatacompanion = getsidedatacompanion(srcrepo, dstrepo)
|
|
|
|
|
|
# Do the actual copying.
|
|
|
# FUTURE this operation can be farmed off to worker processes.
|
|
|
seen = set()
|
|
|
for unencoded, encoded, size in alldatafiles:
|
|
|
if unencoded.endswith(b'.d'):
|
|
|
continue
|
|
|
|
|
|
oldrl = _revlogfrompath(srcrepo, unencoded)
|
|
|
|
|
|
if isinstance(oldrl, changelog.changelog) and b'c' not in seen:
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'finished migrating %d manifest revisions across %d '
|
|
|
b'manifests; change in size: %s\n'
|
|
|
)
|
|
|
% (mrevcount, mcount, util.bytecount(mdstsize - msrcsize))
|
|
|
)
|
|
|
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'migrating changelog containing %d revisions '
|
|
|
b'(%s in store; %s tracked data)\n'
|
|
|
)
|
|
|
% (
|
|
|
crevcount,
|
|
|
util.bytecount(csrcsize),
|
|
|
util.bytecount(crawsize),
|
|
|
)
|
|
|
)
|
|
|
seen.add(b'c')
|
|
|
progress = srcrepo.ui.makeprogress(
|
|
|
_(b'changelog revisions'), total=crevcount
|
|
|
)
|
|
|
elif isinstance(oldrl, manifest.manifestrevlog) and b'm' not in seen:
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'finished migrating %d filelog revisions across %d '
|
|
|
b'filelogs; change in size: %s\n'
|
|
|
)
|
|
|
% (frevcount, fcount, util.bytecount(fdstsize - fsrcsize))
|
|
|
)
|
|
|
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'migrating %d manifests containing %d revisions '
|
|
|
b'(%s in store; %s tracked data)\n'
|
|
|
)
|
|
|
% (
|
|
|
mcount,
|
|
|
mrevcount,
|
|
|
util.bytecount(msrcsize),
|
|
|
util.bytecount(mrawsize),
|
|
|
)
|
|
|
)
|
|
|
seen.add(b'm')
|
|
|
if progress:
|
|
|
progress.complete()
|
|
|
progress = srcrepo.ui.makeprogress(
|
|
|
_(b'manifest revisions'), total=mrevcount
|
|
|
)
|
|
|
elif b'f' not in seen:
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'migrating %d filelogs containing %d revisions '
|
|
|
b'(%s in store; %s tracked data)\n'
|
|
|
)
|
|
|
% (
|
|
|
fcount,
|
|
|
frevcount,
|
|
|
util.bytecount(fsrcsize),
|
|
|
util.bytecount(frawsize),
|
|
|
)
|
|
|
)
|
|
|
seen.add(b'f')
|
|
|
if progress:
|
|
|
progress.complete()
|
|
|
progress = srcrepo.ui.makeprogress(
|
|
|
_(b'file revisions'), total=frevcount
|
|
|
)
|
|
|
|
|
|
if matchrevlog(revlogs, unencoded):
|
|
|
ui.note(
|
|
|
_(b'cloning %d revisions from %s\n') % (len(oldrl), unencoded)
|
|
|
)
|
|
|
newrl = _revlogfrompath(dstrepo, unencoded)
|
|
|
oldrl.clone(
|
|
|
tr,
|
|
|
newrl,
|
|
|
addrevisioncb=oncopiedrevision,
|
|
|
deltareuse=deltareuse,
|
|
|
forcedeltabothparents=forcedeltabothparents,
|
|
|
sidedatacompanion=sidedatacompanion,
|
|
|
)
|
|
|
else:
|
|
|
msg = _(b'blindly copying %s containing %i revisions\n')
|
|
|
ui.note(msg % (unencoded, len(oldrl)))
|
|
|
_copyrevlog(tr, dstrepo, oldrl, unencoded)
|
|
|
|
|
|
newrl = _revlogfrompath(dstrepo, unencoded)
|
|
|
|
|
|
info = newrl.storageinfo(storedsize=True)
|
|
|
datasize = info[b'storedsize'] or 0
|
|
|
|
|
|
dstsize += datasize
|
|
|
|
|
|
if isinstance(newrl, changelog.changelog):
|
|
|
cdstsize += datasize
|
|
|
elif isinstance(newrl, manifest.manifestrevlog):
|
|
|
mdstsize += datasize
|
|
|
else:
|
|
|
fdstsize += datasize
|
|
|
|
|
|
progress.complete()
|
|
|
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'finished migrating %d changelog revisions; change in size: '
|
|
|
b'%s\n'
|
|
|
)
|
|
|
% (crevcount, util.bytecount(cdstsize - csrcsize))
|
|
|
)
|
|
|
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'finished migrating %d total revisions; total change in store '
|
|
|
b'size: %s\n'
|
|
|
)
|
|
|
% (revcount, util.bytecount(dstsize - srcsize))
|
|
|
)
|
|
|
|
|
|
|
|
|
def _filterstorefile(srcrepo, dstrepo, requirements, path, mode, st):
|
|
|
"""Determine whether to copy a store file during upgrade.
|
|
|
|
|
|
This function is called when migrating store files from ``srcrepo`` to
|
|
|
``dstrepo`` as part of upgrading a repository.
|
|
|
|
|
|
Args:
|
|
|
srcrepo: repo we are copying from
|
|
|
dstrepo: repo we are copying to
|
|
|
requirements: set of requirements for ``dstrepo``
|
|
|
path: store file being examined
|
|
|
mode: the ``ST_MODE`` file type of ``path``
|
|
|
st: ``stat`` data structure for ``path``
|
|
|
|
|
|
Function should return ``True`` if the file is to be copied.
|
|
|
"""
|
|
|
# Skip revlogs.
|
|
|
if path.endswith((b'.i', b'.d')):
|
|
|
return False
|
|
|
# Skip transaction related files.
|
|
|
if path.startswith(b'undo'):
|
|
|
return False
|
|
|
# Only copy regular files.
|
|
|
if mode != stat.S_IFREG:
|
|
|
return False
|
|
|
# Skip other skipped files.
|
|
|
if path in (b'lock', b'fncache'):
|
|
|
return False
|
|
|
|
|
|
return True
|
|
|
|
|
|
|
|
|
def _finishdatamigration(ui, srcrepo, dstrepo, requirements):
|
|
|
"""Hook point for extensions to perform additional actions during upgrade.
|
|
|
|
|
|
This function is called after revlogs and store files have been copied but
|
|
|
before the new store is swapped into the original location.
|
|
|
"""
|
|
|
|
|
|
|
|
|
def _upgraderepo(
|
|
|
ui, srcrepo, dstrepo, requirements, actions, revlogs=UPGRADE_ALL_REVLOGS
|
|
|
):
|
|
|
"""Do the low-level work of upgrading a repository.
|
|
|
|
|
|
The upgrade is effectively performed as a copy between a source
|
|
|
repository and a temporary destination repository.
|
|
|
|
|
|
The source repository is unmodified for as long as possible so the
|
|
|
upgrade can abort at any time without causing loss of service for
|
|
|
readers and without corrupting the source repository.
|
|
|
"""
|
|
|
assert srcrepo.currentwlock()
|
|
|
assert dstrepo.currentwlock()
|
|
|
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'(it is safe to interrupt this process any time before '
|
|
|
b'data migration completes)\n'
|
|
|
)
|
|
|
)
|
|
|
|
|
|
if b're-delta-all' in actions:
|
|
|
deltareuse = revlog.revlog.DELTAREUSENEVER
|
|
|
elif b're-delta-parent' in actions:
|
|
|
deltareuse = revlog.revlog.DELTAREUSESAMEREVS
|
|
|
elif b're-delta-multibase' in actions:
|
|
|
deltareuse = revlog.revlog.DELTAREUSESAMEREVS
|
|
|
elif b're-delta-fulladd' in actions:
|
|
|
deltareuse = revlog.revlog.DELTAREUSEFULLADD
|
|
|
else:
|
|
|
deltareuse = revlog.revlog.DELTAREUSEALWAYS
|
|
|
|
|
|
with dstrepo.transaction(b'upgrade') as tr:
|
|
|
_clonerevlogs(
|
|
|
ui,
|
|
|
srcrepo,
|
|
|
dstrepo,
|
|
|
tr,
|
|
|
deltareuse,
|
|
|
b're-delta-multibase' in actions,
|
|
|
revlogs=revlogs,
|
|
|
)
|
|
|
|
|
|
# Now copy other files in the store directory.
|
|
|
# The sorted() makes execution deterministic.
|
|
|
for p, kind, st in sorted(srcrepo.store.vfs.readdir(b'', stat=True)):
|
|
|
if not _filterstorefile(srcrepo, dstrepo, requirements, p, kind, st):
|
|
|
continue
|
|
|
|
|
|
srcrepo.ui.write(_(b'copying %s\n') % p)
|
|
|
src = srcrepo.store.rawvfs.join(p)
|
|
|
dst = dstrepo.store.rawvfs.join(p)
|
|
|
util.copyfile(src, dst, copystat=True)
|
|
|
|
|
|
_finishdatamigration(ui, srcrepo, dstrepo, requirements)
|
|
|
|
|
|
ui.write(_(b'data fully migrated to temporary repository\n'))
|
|
|
|
|
|
backuppath = pycompat.mkdtemp(prefix=b'upgradebackup.', dir=srcrepo.path)
|
|
|
backupvfs = vfsmod.vfs(backuppath)
|
|
|
|
|
|
# Make a backup of requires file first, as it is the first to be modified.
|
|
|
util.copyfile(srcrepo.vfs.join(b'requires'), backupvfs.join(b'requires'))
|
|
|
|
|
|
# We install an arbitrary requirement that clients must not support
|
|
|
# as a mechanism to lock out new clients during the data swap. This is
|
|
|
# better than allowing a client to continue while the repository is in
|
|
|
# an inconsistent state.
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'marking source repository as being upgraded; clients will be '
|
|
|
b'unable to read from repository\n'
|
|
|
)
|
|
|
)
|
|
|
scmutil.writerequires(
|
|
|
srcrepo.vfs, srcrepo.requirements | {b'upgradeinprogress'}
|
|
|
)
|
|
|
|
|
|
ui.write(_(b'starting in-place swap of repository data\n'))
|
|
|
ui.write(_(b'replaced files will be backed up at %s\n') % backuppath)
|
|
|
|
|
|
# Now swap in the new store directory. Doing it as a rename should make
|
|
|
# the operation nearly instantaneous and atomic (at least in well-behaved
|
|
|
# environments).
|
|
|
ui.write(_(b'replacing store...\n'))
|
|
|
tstart = util.timer()
|
|
|
util.rename(srcrepo.spath, backupvfs.join(b'store'))
|
|
|
util.rename(dstrepo.spath, srcrepo.spath)
|
|
|
elapsed = util.timer() - tstart
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'store replacement complete; repository was inconsistent for '
|
|
|
b'%0.1fs\n'
|
|
|
)
|
|
|
% elapsed
|
|
|
)
|
|
|
|
|
|
# We first write the requirements file. Any new requirements will lock
|
|
|
# out legacy clients.
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'finalizing requirements file and making repository readable '
|
|
|
b'again\n'
|
|
|
)
|
|
|
)
|
|
|
scmutil.writerequires(srcrepo.vfs, requirements)
|
|
|
|
|
|
# The lock file from the old store won't be removed because nothing has a
|
|
|
# reference to its new location. So clean it up manually. Alternatively, we
|
|
|
# could update srcrepo.svfs and other variables to point to the new
|
|
|
# location. This is simpler.
|
|
|
backupvfs.unlink(b'store/lock')
|
|
|
|
|
|
return backuppath
|
|
|
|
|
|
|
|
|
def upgraderepo(
|
|
|
ui,
|
|
|
repo,
|
|
|
run=False,
|
|
|
optimize=None,
|
|
|
backup=True,
|
|
|
manifest=None,
|
|
|
changelog=None,
|
|
|
):
|
|
|
"""Upgrade a repository in place."""
|
|
|
if optimize is None:
|
|
|
optimize = []
|
|
|
optimize = set(legacy_opts_map.get(o, o) for o in optimize)
|
|
|
repo = repo.unfiltered()
|
|
|
|
|
|
revlogs = set(UPGRADE_ALL_REVLOGS)
|
|
|
specentries = ((b'c', changelog), (b'm', manifest))
|
|
|
specified = [(y, x) for (y, x) in specentries if x is not None]
|
|
|
if specified:
|
|
|
# we have some limitation on revlogs to be recloned
|
|
|
if any(x for y, x in specified):
|
|
|
revlogs = set()
|
|
|
for r, enabled in specified:
|
|
|
if enabled:
|
|
|
if r == b'c':
|
|
|
revlogs.add(UPGRADE_CHANGELOG)
|
|
|
elif r == b'm':
|
|
|
revlogs.add(UPGRADE_MANIFEST)
|
|
|
else:
|
|
|
# none are enabled
|
|
|
for r, __ in specified:
|
|
|
if r == b'c':
|
|
|
revlogs.discard(UPGRADE_CHANGELOG)
|
|
|
elif r == b'm':
|
|
|
revlogs.discard(UPGRADE_MANIFEST)
|
|
|
|
|
|
# Ensure the repository can be upgraded.
|
|
|
missingreqs = requiredsourcerequirements(repo) - repo.requirements
|
|
|
if missingreqs:
|
|
|
raise error.Abort(
|
|
|
_(b'cannot upgrade repository; requirement missing: %s')
|
|
|
% _(b', ').join(sorted(missingreqs))
|
|
|
)
|
|
|
|
|
|
blockedreqs = blocksourcerequirements(repo) & repo.requirements
|
|
|
if blockedreqs:
|
|
|
raise error.Abort(
|
|
|
_(
|
|
|
b'cannot upgrade repository; unsupported source '
|
|
|
b'requirement: %s'
|
|
|
)
|
|
|
% _(b', ').join(sorted(blockedreqs))
|
|
|
)
|
|
|
|
|
|
# FUTURE there is potentially a need to control the wanted requirements via
|
|
|
# command arguments or via an extension hook point.
|
|
|
newreqs = localrepo.newreporequirements(
|
|
|
repo.ui, localrepo.defaultcreateopts(repo.ui)
|
|
|
)
|
|
|
newreqs.update(preservedrequirements(repo))
|
|
|
|
|
|
noremovereqs = (
|
|
|
repo.requirements - newreqs - supportremovedrequirements(repo)
|
|
|
)
|
|
|
if noremovereqs:
|
|
|
raise error.Abort(
|
|
|
_(
|
|
|
b'cannot upgrade repository; requirement would be '
|
|
|
b'removed: %s'
|
|
|
)
|
|
|
% _(b', ').join(sorted(noremovereqs))
|
|
|
)
|
|
|
|
|
|
noaddreqs = newreqs - repo.requirements - allowednewrequirements(repo)
|
|
|
if noaddreqs:
|
|
|
raise error.Abort(
|
|
|
_(
|
|
|
b'cannot upgrade repository; do not support adding '
|
|
|
b'requirement: %s'
|
|
|
)
|
|
|
% _(b', ').join(sorted(noaddreqs))
|
|
|
)
|
|
|
|
|
|
unsupportedreqs = newreqs - supporteddestrequirements(repo)
|
|
|
if unsupportedreqs:
|
|
|
raise error.Abort(
|
|
|
_(
|
|
|
b'cannot upgrade repository; do not support '
|
|
|
b'destination requirement: %s'
|
|
|
)
|
|
|
% _(b', ').join(sorted(unsupportedreqs))
|
|
|
)
|
|
|
|
|
|
# Find and validate all improvements that can be made.
|
|
|
alloptimizations = findoptimizations(repo)
|
|
|
|
|
|
# Apply and Validate arguments.
|
|
|
optimizations = []
|
|
|
for o in alloptimizations:
|
|
|
if o.name in optimize:
|
|
|
optimizations.append(o)
|
|
|
optimize.discard(o.name)
|
|
|
|
|
|
if optimize: # anything left is unknown
|
|
|
raise error.Abort(
|
|
|
_(b'unknown optimization action requested: %s')
|
|
|
% b', '.join(sorted(optimize)),
|
|
|
hint=_(b'run without arguments to see valid optimizations'),
|
|
|
)
|
|
|
|
|
|
deficiencies = finddeficiencies(repo)
|
|
|
actions = determineactions(repo, deficiencies, repo.requirements, newreqs)
|
|
|
actions.extend(
|
|
|
o
|
|
|
for o in sorted(optimizations)
|
|
|
# determineactions could have added optimisation
|
|
|
if o not in actions
|
|
|
)
|
|
|
|
|
|
removedreqs = repo.requirements - newreqs
|
|
|
addedreqs = newreqs - repo.requirements
|
|
|
|
|
|
if revlogs != UPGRADE_ALL_REVLOGS:
|
|
|
incompatible = RECLONES_REQUIREMENTS & (removedreqs | addedreqs)
|
|
|
if incompatible:
|
|
|
msg = _(
|
|
|
b'ignoring revlogs selection flags, format requirements '
|
|
|
b'change: %s\n'
|
|
|
)
|
|
|
ui.warn(msg % b', '.join(sorted(incompatible)))
|
|
|
revlogs = UPGRADE_ALL_REVLOGS
|
|
|
|
|
|
def printrequirements():
|
|
|
ui.write(_(b'requirements\n'))
|
|
|
ui.write(
|
|
|
_(b' preserved: %s\n')
|
|
|
% _(b', ').join(sorted(newreqs & repo.requirements))
|
|
|
)
|
|
|
|
|
|
if repo.requirements - newreqs:
|
|
|
ui.write(
|
|
|
_(b' removed: %s\n')
|
|
|
% _(b', ').join(sorted(repo.requirements - newreqs))
|
|
|
)
|
|
|
|
|
|
if newreqs - repo.requirements:
|
|
|
ui.write(
|
|
|
_(b' added: %s\n')
|
|
|
% _(b', ').join(sorted(newreqs - repo.requirements))
|
|
|
)
|
|
|
|
|
|
ui.write(b'\n')
|
|
|
|
|
|
def printupgradeactions():
|
|
|
for a in actions:
|
|
|
ui.write(b'%s\n %s\n\n' % (a.name, a.upgrademessage))
|
|
|
|
|
|
if not run:
|
|
|
fromconfig = []
|
|
|
onlydefault = []
|
|
|
|
|
|
for d in deficiencies:
|
|
|
if d.fromconfig(repo):
|
|
|
fromconfig.append(d)
|
|
|
elif d.default:
|
|
|
onlydefault.append(d)
|
|
|
|
|
|
if fromconfig or onlydefault:
|
|
|
|
|
|
if fromconfig:
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'repository lacks features recommended by '
|
|
|
b'current config options:\n\n'
|
|
|
)
|
|
|
)
|
|
|
for i in fromconfig:
|
|
|
ui.write(b'%s\n %s\n\n' % (i.name, i.description))
|
|
|
|
|
|
if onlydefault:
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'repository lacks features used by the default '
|
|
|
b'config options:\n\n'
|
|
|
)
|
|
|
)
|
|
|
for i in onlydefault:
|
|
|
ui.write(b'%s\n %s\n\n' % (i.name, i.description))
|
|
|
|
|
|
ui.write(b'\n')
|
|
|
else:
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'(no feature deficiencies found in existing '
|
|
|
b'repository)\n'
|
|
|
)
|
|
|
)
|
|
|
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'performing an upgrade with "--run" will make the following '
|
|
|
b'changes:\n\n'
|
|
|
)
|
|
|
)
|
|
|
|
|
|
printrequirements()
|
|
|
printupgradeactions()
|
|
|
|
|
|
unusedoptimize = [i for i in alloptimizations if i not in actions]
|
|
|
|
|
|
if unusedoptimize:
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'additional optimizations are available by specifying '
|
|
|
b'"--optimize <name>":\n\n'
|
|
|
)
|
|
|
)
|
|
|
for i in unusedoptimize:
|
|
|
ui.write(_(b'%s\n %s\n\n') % (i.name, i.description))
|
|
|
return
|
|
|
|
|
|
# Else we're in the run=true case.
|
|
|
ui.write(_(b'upgrade will perform the following actions:\n\n'))
|
|
|
printrequirements()
|
|
|
printupgradeactions()
|
|
|
|
|
|
upgradeactions = [a.name for a in actions]
|
|
|
|
|
|
ui.write(_(b'beginning upgrade...\n'))
|
|
|
with repo.wlock(), repo.lock():
|
|
|
ui.write(_(b'repository locked and read-only\n'))
|
|
|
# Our strategy for upgrading the repository is to create a new,
|
|
|
# temporary repository, write data to it, then do a swap of the
|
|
|
# data. There are less heavyweight ways to do this, but it is easier
|
|
|
# to create a new repo object than to instantiate all the components
|
|
|
# (like the store) separately.
|
|
|
tmppath = pycompat.mkdtemp(prefix=b'upgrade.', dir=repo.path)
|
|
|
backuppath = None
|
|
|
try:
|
|
|
ui.write(
|
|
|
_(
|
|
|
b'creating temporary repository to stage migrated '
|
|
|
b'data: %s\n'
|
|
|
)
|
|
|
% tmppath
|
|
|
)
|
|
|
|
|
|
# clone ui without using ui.copy because repo.ui is protected
|
|
|
repoui = repo.ui.__class__(repo.ui)
|
|
|
dstrepo = hg.repository(repoui, path=tmppath, create=True)
|
|
|
|
|
|
with dstrepo.wlock(), dstrepo.lock():
|
|
|
backuppath = _upgraderepo(
|
|
|
ui, repo, dstrepo, newreqs, upgradeactions, revlogs=revlogs
|
|
|
)
|
|
|
if not (backup or backuppath is None):
|
|
|
ui.write(_(b'removing old repository content%s\n') % backuppath)
|
|
|
repo.vfs.rmtree(backuppath, forcibly=True)
|
|
|
backuppath = None
|
|
|
|
|
|
finally:
|
|
|
ui.write(_(b'removing temporary repository %s\n') % tmppath)
|
|
|
repo.vfs.rmtree(tmppath, forcibly=True)
|
|
|
|
|
|
if backuppath:
|
|
|
ui.warn(
|
|
|
_(b'copy of old repository backed up at %s\n') % backuppath
|
|
|
)
|
|
|
ui.warn(
|
|
|
_(
|
|
|
b'the old repository will not be deleted; remove '
|
|
|
b'it to free up disk space once the upgraded '
|
|
|
b'repository is verified\n'
|
|
|
)
|
|
|
)
|
|
|
|
