view mercurial/verify.py @ 25190:22438cfd11b5

phases: add set per phase in C phase computation

To speed up the computation of draft(), secret(), divergent(), obsolete() and
unstable() we need to have a fast way of getting the list of revisions that
are in draft(), secret() or the union of both: not public().

This patch extends the work on phase computation in C and make the phase
computation code also return a list of set for each non public phase.
Using these sets we can quickly obtain all the revisions of a given phase.
We do not return a set for the public phase as we expect it to be roughly the
size of the repo. Also, it can be computed easily by substracting the entries in the
non public phases from all the revs in the repo.

# verify.py - repository integrity checking for Mercurial
#
# Copyright 2006, 2007 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from node import nullid, short
from i18n import _
import os
import revlog, util, error

def verify(repo):
    lock = repo.lock()
    try:
        return _verify(repo)
    finally:
        lock.release()

def _normpath(f):
    # under hg < 2.4, convert didn't sanitize paths properly, so a
    # converted repo may contain repeated slashes
    while '//' in f:
        f = f.replace('//', '/')
    return f

def _verify(repo):
    repo = repo.unfiltered()
    mflinkrevs = {}
    filelinkrevs = {}
    filenodes = {}
    revisions = 0
    badrevs = set()
    errors = [0]
    warnings = [0]
    ui = repo.ui
    cl = repo.changelog
    mf = repo.manifest
    lrugetctx = util.lrucachefunc(repo.changectx)

    if not repo.url().startswith('file:'):
        raise util.Abort(_("cannot verify bundle or remote repos"))

    def err(linkrev, msg, filename=None):
        if linkrev is not None:
            badrevs.add(linkrev)
        else:
            linkrev = '?'
        msg = "%s: %s" % (linkrev, msg)
        if filename:
            msg = "%s@%s" % (filename, msg)
        ui.warn(" " + msg + "\n")
        errors[0] += 1

    def exc(linkrev, msg, inst, filename=None):
        if isinstance(inst, KeyboardInterrupt):
            ui.warn(_("interrupted"))
            raise
        if not str(inst):
            inst = repr(inst)
        err(linkrev, "%s: %s" % (msg, inst), filename)

    def warn(msg):
        ui.warn(msg + "\n")
        warnings[0] += 1

    def checklog(obj, name, linkrev):
        if not len(obj) and (havecl or havemf):
            err(linkrev, _("empty or missing %s") % name)
            return

        d = obj.checksize()
        if d[0]:
            err(None, _("data length off by %d bytes") % d[0], name)
        if d[1]:
            err(None, _("index contains %d extra bytes") % d[1], name)

        if obj.version != revlog.REVLOGV0:
            if not revlogv1:
                warn(_("warning: `%s' uses revlog format 1") % name)
        elif revlogv1:
            warn(_("warning: `%s' uses revlog format 0") % name)

    def checkentry(obj, i, node, seen, linkrevs, f):
        lr = obj.linkrev(obj.rev(node))
        if lr < 0 or (havecl and lr not in linkrevs):
            if lr < 0 or lr >= len(cl):
                msg = _("rev %d points to nonexistent changeset %d")
            else:
                msg = _("rev %d points to unexpected changeset %d")
            err(None, msg % (i, lr), f)
            if linkrevs:
                if f and len(linkrevs) > 1:
                    try:
                        # attempt to filter down to real linkrevs
                        linkrevs = [l for l in linkrevs
                                    if lrugetctx(l)[f].filenode() == node]
                    except Exception:
                        pass
                warn(_(" (expected %s)") % " ".join(map(str, linkrevs)))
            lr = None # can't be trusted

        try:
            p1, p2 = obj.parents(node)
            if p1 not in seen and p1 != nullid:
                err(lr, _("unknown parent 1 %s of %s") %
                    (short(p1), short(node)), f)
            if p2 not in seen and p2 != nullid:
                err(lr, _("unknown parent 2 %s of %s") %
                    (short(p2), short(node)), f)
        except Exception, inst:
            exc(lr, _("checking parents of %s") % short(node), inst, f)

        if node in seen:
            err(lr, _("duplicate revision %d (%d)") % (i, seen[node]), f)
        seen[node] = i
        return lr

    if os.path.exists(repo.sjoin("journal")):
        ui.warn(_("abandoned transaction found - run hg recover\n"))

    revlogv1 = cl.version != revlog.REVLOGV0
    if ui.verbose or not revlogv1:
        ui.status(_("repository uses revlog format %d\n") %
                       (revlogv1 and 1 or 0))

    havecl = len(cl) > 0
    havemf = len(mf) > 0

    ui.status(_("checking changesets\n"))
    refersmf = False
    seen = {}
    checklog(cl, "changelog", 0)
    total = len(repo)
    for i in repo:
        ui.progress(_('checking'), i, total=total, unit=_('changesets'))
        n = cl.node(i)
        checkentry(cl, i, n, seen, [i], "changelog")

        try:
            changes = cl.read(n)
            if changes[0] != nullid:
                mflinkrevs.setdefault(changes[0], []).append(i)
                refersmf = True
            for f in changes[3]:
                filelinkrevs.setdefault(_normpath(f), []).append(i)
        except Exception, inst:
            refersmf = True
            exc(i, _("unpacking changeset %s") % short(n), inst)
    ui.progress(_('checking'), None)

    ui.status(_("checking manifests\n"))
    seen = {}
    if refersmf:
        # Do not check manifest if there are only changelog entries with
        # null manifests.
        checklog(mf, "manifest", 0)
    total = len(mf)
    for i in mf:
        ui.progress(_('checking'), i, total=total, unit=_('manifests'))
        n = mf.node(i)
        lr = checkentry(mf, i, n, seen, mflinkrevs.get(n, []), "manifest")
        if n in mflinkrevs:
            del mflinkrevs[n]
        else:
            err(lr, _("%s not in changesets") % short(n), "manifest")

        try:
            for f, fn in mf.readdelta(n).iteritems():
                if not f:
                    err(lr, _("file without name in manifest"))
                elif f != "/dev/null": # ignore this in very old repos
                    filenodes.setdefault(_normpath(f), {}).setdefault(fn, lr)
        except Exception, inst:
            exc(lr, _("reading manifest delta %s") % short(n), inst)
    ui.progress(_('checking'), None)

    ui.status(_("crosschecking files in changesets and manifests\n"))

    total = len(mflinkrevs) + len(filelinkrevs) + len(filenodes)
    count = 0
    if havemf:
        for c, m in sorted([(c, m) for m in mflinkrevs
                            for c in mflinkrevs[m]]):
            count += 1
            if m == nullid:
                continue
            ui.progress(_('crosschecking'), count, total=total)
            err(c, _("changeset refers to unknown manifest %s") % short(m))
        mflinkrevs = None # del is bad here due to scope issues

        for f in sorted(filelinkrevs):
            count += 1
            ui.progress(_('crosschecking'), count, total=total)
            if f not in filenodes:
                lr = filelinkrevs[f][0]
                err(lr, _("in changeset but not in manifest"), f)

    if havecl:
        for f in sorted(filenodes):
            count += 1
            ui.progress(_('crosschecking'), count, total=total)
            if f not in filelinkrevs:
                try:
                    fl = repo.file(f)
                    lr = min([fl.linkrev(fl.rev(n)) for n in filenodes[f]])
                except Exception:
                    lr = None
                err(lr, _("in manifest but not in changeset"), f)

    ui.progress(_('crosschecking'), None)

    ui.status(_("checking files\n"))

    storefiles = set()
    for f, f2, size in repo.store.datafiles():
        if not f:
            err(None, _("cannot decode filename '%s'") % f2)
        elif size > 0 or not revlogv1:
            storefiles.add(_normpath(f))

    files = sorted(set(filenodes) | set(filelinkrevs))
    total = len(files)
    for i, f in enumerate(files):
        ui.progress(_('checking'), i, item=f, total=total)
        try:
            linkrevs = filelinkrevs[f]
        except KeyError:
            # in manifest but not in changelog
            linkrevs = []

        if linkrevs:
            lr = linkrevs[0]
        else:
            lr = None

        try:
            fl = repo.file(f)
        except error.RevlogError, e:
            err(lr, _("broken revlog! (%s)") % e, f)
            continue

        for ff in fl.files():
            try:
                storefiles.remove(ff)
            except KeyError:
                err(lr, _("missing revlog!"), ff)

        checklog(fl, f, lr)
        seen = {}
        rp = None
        for i in fl:
            revisions += 1
            n = fl.node(i)
            lr = checkentry(fl, i, n, seen, linkrevs, f)
            if f in filenodes:
                if havemf and n not in filenodes[f]:
                    err(lr, _("%s not in manifests") % (short(n)), f)
                else:
                    del filenodes[f][n]

            # verify contents
            try:
                l = len(fl.read(n))
                rp = fl.renamed(n)
                if l != fl.size(i):
                    if len(fl.revision(n)) != fl.size(i):
                        err(lr, _("unpacked size is %s, %s expected") %
                            (l, fl.size(i)), f)
            except error.CensoredNodeError:
                if ui.config("censor", "policy", "abort") == "abort":
                    err(lr, _("censored file data"), f)
            except Exception, inst:
                exc(lr, _("unpacking %s") % short(n), inst, f)

            # check renames
            try:
                if rp:
                    if lr is not None and ui.verbose:
                        ctx = lrugetctx(lr)
                        found = False
                        for pctx in ctx.parents():
                            if rp[0] in pctx:
                                found = True
                                break
                        if not found:
                            warn(_("warning: copy source of '%s' not"
                                   " in parents of %s") % (f, ctx))
                    fl2 = repo.file(rp[0])
                    if not len(fl2):
                        err(lr, _("empty or missing copy source revlog %s:%s")
                            % (rp[0], short(rp[1])), f)
                    elif rp[1] == nullid:
                        ui.note(_("warning: %s@%s: copy source"
                                  " revision is nullid %s:%s\n")
                            % (f, lr, rp[0], short(rp[1])))
                    else:
                        fl2.rev(rp[1])
            except Exception, inst:
                exc(lr, _("checking rename of %s") % short(n), inst, f)

        # cross-check
        if f in filenodes:
            fns = [(lr, n) for n, lr in filenodes[f].iteritems()]
            for lr, node in sorted(fns):
                err(lr, _("%s in manifests not found") % short(node), f)
    ui.progress(_('checking'), None)

    for f in storefiles:
        warn(_("warning: orphan revlog '%s'") % f)

    ui.status(_("%d files, %d changesets, %d total revisions\n") %
                   (len(files), len(cl), revisions))
    if warnings[0]:
        ui.warn(_("%d warnings encountered!\n") % warnings[0])
    if errors[0]:
        ui.warn(_("%d integrity errors encountered!\n") % errors[0])
        if badrevs:
            ui.warn(_("(first damaged changeset appears to be %d)\n")
                    % min(badrevs))
        return 1