rust-status: add trace-level logging for Rust status fallback for debugging
The added `log` crate is already a sub-dependency.
Differential Revision: https://phab.mercurial-scm.org/D8300
# monotone.py - monotone support for the convert extension
#
# Copyright 2008, 2009 Mikkel Fahnoe Jorgensen <mikkel@dvide.com> and
# others
#
# 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
import os
import re
from mercurial.i18n import _
from mercurial.pycompat import open
from mercurial import (
error,
pycompat,
)
from mercurial.utils import dateutil
from . import common
class monotone_source(common.converter_source, common.commandline):
def __init__(self, ui, repotype, path=None, revs=None):
common.converter_source.__init__(self, ui, repotype, path, revs)
if revs and len(revs) > 1:
raise error.Abort(
_(
b'monotone source does not support specifying '
b'multiple revs'
)
)
common.commandline.__init__(self, ui, b'mtn')
self.ui = ui
self.path = path
self.automatestdio = False
self.revs = revs
norepo = common.NoRepo(
_(b"%s does not look like a monotone repository") % path
)
if not os.path.exists(os.path.join(path, b'_MTN')):
# Could be a monotone repository (SQLite db file)
try:
f = open(path, b'rb')
header = f.read(16)
f.close()
except IOError:
header = b''
if header != b'SQLite format 3\x00':
raise norepo
# regular expressions for parsing monotone output
space = br'\s*'
name = br'\s+"((?:\\"|[^"])*)"\s*'
value = name
revision = br'\s+\[(\w+)\]\s*'
lines = br'(?:.|\n)+'
self.dir_re = re.compile(space + b"dir" + name)
self.file_re = re.compile(
space + b"file" + name + b"content" + revision
)
self.add_file_re = re.compile(
space + b"add_file" + name + b"content" + revision
)
self.patch_re = re.compile(
space + b"patch" + name + b"from" + revision + b"to" + revision
)
self.rename_re = re.compile(space + b"rename" + name + b"to" + name)
self.delete_re = re.compile(space + b"delete" + name)
self.tag_re = re.compile(space + b"tag" + name + b"revision" + revision)
self.cert_re = re.compile(
lines + space + b"name" + name + b"value" + value
)
attr = space + b"file" + lines + space + b"attr" + space
self.attr_execute_re = re.compile(
attr + b'"mtn:execute"' + space + b'"true"'
)
# cached data
self.manifest_rev = None
self.manifest = None
self.files = None
self.dirs = None
common.checktool(b'mtn', abort=False)
def mtnrun(self, *args, **kwargs):
if self.automatestdio:
return self.mtnrunstdio(*args, **kwargs)
else:
return self.mtnrunsingle(*args, **kwargs)
def mtnrunsingle(self, *args, **kwargs):
kwargs['d'] = self.path
return self.run0(b'automate', *args, **kwargs)
def mtnrunstdio(self, *args, **kwargs):
# Prepare the command in automate stdio format
kwargs = pycompat.byteskwargs(kwargs)
command = []
for k, v in pycompat.iteritems(kwargs):
command.append(b"%d:%s" % (len(k), k))
if v:
command.append(b"%d:%s" % (len(v), v))
if command:
command.insert(0, b'o')
command.append(b'e')
command.append(b'l')
for arg in args:
command.append(b"%d:%s" % (len(arg), arg))
command.append(b'e')
command = b''.join(command)
self.ui.debug(b"mtn: sending '%s'\n" % command)
self.mtnwritefp.write(command)
self.mtnwritefp.flush()
return self.mtnstdioreadcommandoutput(command)
def mtnstdioreadpacket(self):
read = None
commandnbr = b''
while read != b':':
read = self.mtnreadfp.read(1)
if not read:
raise error.Abort(_(b'bad mtn packet - no end of commandnbr'))
commandnbr += read
commandnbr = commandnbr[:-1]
stream = self.mtnreadfp.read(1)
if stream not in b'mewptl':
raise error.Abort(
_(b'bad mtn packet - bad stream type %s') % stream
)
read = self.mtnreadfp.read(1)
if read != b':':
raise error.Abort(_(b'bad mtn packet - no divider before size'))
read = None
lengthstr = b''
while read != b':':
read = self.mtnreadfp.read(1)
if not read:
raise error.Abort(_(b'bad mtn packet - no end of packet size'))
lengthstr += read
try:
length = pycompat.long(lengthstr[:-1])
except TypeError:
raise error.Abort(
_(b'bad mtn packet - bad packet size %s') % lengthstr
)
read = self.mtnreadfp.read(length)
if len(read) != length:
raise error.Abort(
_(
b"bad mtn packet - unable to read full packet "
b"read %s of %s"
)
% (len(read), length)
)
return (commandnbr, stream, length, read)
def mtnstdioreadcommandoutput(self, command):
retval = []
while True:
commandnbr, stream, length, output = self.mtnstdioreadpacket()
self.ui.debug(
b'mtn: read packet %s:%s:%d\n' % (commandnbr, stream, length)
)
if stream == b'l':
# End of command
if output != b'0':
raise error.Abort(
_(b"mtn command '%s' returned %s") % (command, output)
)
break
elif stream in b'ew':
# Error, warning output
self.ui.warn(_(b'%s error:\n') % self.command)
self.ui.warn(output)
elif stream == b'p':
# Progress messages
self.ui.debug(b'mtn: ' + output)
elif stream == b'm':
# Main stream - command output
retval.append(output)
return b''.join(retval)
def mtnloadmanifest(self, rev):
if self.manifest_rev == rev:
return
self.manifest = self.mtnrun(b"get_manifest_of", rev).split(b"\n\n")
self.manifest_rev = rev
self.files = {}
self.dirs = {}
for e in self.manifest:
m = self.file_re.match(e)
if m:
attr = b""
name = m.group(1)
node = m.group(2)
if self.attr_execute_re.match(e):
attr += b"x"
self.files[name] = (node, attr)
m = self.dir_re.match(e)
if m:
self.dirs[m.group(1)] = True
def mtnisfile(self, name, rev):
# a non-file could be a directory or a deleted or renamed file
self.mtnloadmanifest(rev)
return name in self.files
def mtnisdir(self, name, rev):
self.mtnloadmanifest(rev)
return name in self.dirs
def mtngetcerts(self, rev):
certs = {
b"author": b"<missing>",
b"date": b"<missing>",
b"changelog": b"<missing>",
b"branch": b"<missing>",
}
certlist = self.mtnrun(b"certs", rev)
# mtn < 0.45:
# key "test@selenic.com"
# mtn >= 0.45:
# key [ff58a7ffb771907c4ff68995eada1c4da068d328]
certlist = re.split(br'\n\n {6}key ["\[]', certlist)
for e in certlist:
m = self.cert_re.match(e)
if m:
name, value = m.groups()
value = value.replace(br'\"', b'"')
value = value.replace(br'\\', b'\\')
certs[name] = value
# Monotone may have subsecond dates: 2005-02-05T09:39:12.364306
# and all times are stored in UTC
certs[b"date"] = certs[b"date"].split(b'.')[0] + b" UTC"
return certs
# implement the converter_source interface:
def getheads(self):
if not self.revs:
return self.mtnrun(b"leaves").splitlines()
else:
return self.revs
def getchanges(self, rev, full):
if full:
raise error.Abort(
_(b"convert from monotone does not support --full")
)
revision = self.mtnrun(b"get_revision", rev).split(b"\n\n")
files = {}
ignoremove = {}
renameddirs = []
copies = {}
for e in revision:
m = self.add_file_re.match(e)
if m:
files[m.group(1)] = rev
ignoremove[m.group(1)] = rev
m = self.patch_re.match(e)
if m:
files[m.group(1)] = rev
# Delete/rename is handled later when the convert engine
# discovers an IOError exception from getfile,
# but only if we add the "from" file to the list of changes.
m = self.delete_re.match(e)
if m:
files[m.group(1)] = rev
m = self.rename_re.match(e)
if m:
toname = m.group(2)
fromname = m.group(1)
if self.mtnisfile(toname, rev):
ignoremove[toname] = 1
copies[toname] = fromname
files[toname] = rev
files[fromname] = rev
elif self.mtnisdir(toname, rev):
renameddirs.append((fromname, toname))
# Directory renames can be handled only once we have recorded
# all new files
for fromdir, todir in renameddirs:
renamed = {}
for tofile in self.files:
if tofile in ignoremove:
continue
if tofile.startswith(todir + b'/'):
renamed[tofile] = fromdir + tofile[len(todir) :]
# Avoid chained moves like:
# d1(/a) => d3/d1(/a)
# d2 => d3
ignoremove[tofile] = 1
for tofile, fromfile in renamed.items():
self.ui.debug(
b"copying file in renamed directory from '%s' to '%s'"
% (fromfile, tofile),
b'\n',
)
files[tofile] = rev
copies[tofile] = fromfile
for fromfile in renamed.values():
files[fromfile] = rev
return (files.items(), copies, set())
def getfile(self, name, rev):
if not self.mtnisfile(name, rev):
return None, None
try:
data = self.mtnrun(b"get_file_of", name, r=rev)
except Exception:
return None, None
self.mtnloadmanifest(rev)
node, attr = self.files.get(name, (None, b""))
return data, attr
def getcommit(self, rev):
extra = {}
certs = self.mtngetcerts(rev)
if certs.get(b'suspend') == certs[b"branch"]:
extra[b'close'] = 1
dateformat = b"%Y-%m-%dT%H:%M:%S"
return common.commit(
author=certs[b"author"],
date=dateutil.datestr(dateutil.strdate(certs[b"date"], dateformat)),
desc=certs[b"changelog"],
rev=rev,
parents=self.mtnrun(b"parents", rev).splitlines(),
branch=certs[b"branch"],
extra=extra,
)
def gettags(self):
tags = {}
for e in self.mtnrun(b"tags").split(b"\n\n"):
m = self.tag_re.match(e)
if m:
tags[m.group(1)] = m.group(2)
return tags
def getchangedfiles(self, rev, i):
# This function is only needed to support --filemap
# ... and we don't support that
raise NotImplementedError
def before(self):
# Check if we have a new enough version to use automate stdio
try:
versionstr = self.mtnrunsingle(b"interface_version")
version = float(versionstr)
except Exception:
raise error.Abort(
_(b"unable to determine mtn automate interface version")
)
if version >= 12.0:
self.automatestdio = True
self.ui.debug(
b"mtn automate version %f - using automate stdio\n" % version
)
# launch the long-running automate stdio process
self.mtnwritefp, self.mtnreadfp = self._run2(
b'automate', b'stdio', b'-d', self.path
)
# read the headers
read = self.mtnreadfp.readline()
if read != b'format-version: 2\n':
raise error.Abort(
_(b'mtn automate stdio header unexpected: %s') % read
)
while read != b'\n':
read = self.mtnreadfp.readline()
if not read:
raise error.Abort(
_(
b"failed to reach end of mtn automate "
b"stdio headers"
)
)
else:
self.ui.debug(
b"mtn automate version %s - not using automate stdio "
b"(automate >= 12.0 - mtn >= 0.46 is needed)\n" % version
)
def after(self):
if self.automatestdio:
self.mtnwritefp.close()
self.mtnwritefp = None
self.mtnreadfp.close()
self.mtnreadfp = None