ref: 48555e785ac03a29aad4c027674d9487d148227c
dir: /sys/src/cmd/hg/mercurial/sshrepo.py/
# sshrepo.py - ssh repository proxy class for mercurial
#
# Copyright 2005, 2006 Matt Mackall <[email protected]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.
from node import bin, hex
from i18n import _
import repo, util, error
import re, urllib
class remotelock(object):
def __init__(self, repo):
self.repo = repo
def release(self):
self.repo.unlock()
self.repo = None
def __del__(self):
if self.repo:
self.release()
class sshrepository(repo.repository):
def __init__(self, ui, path, create=0):
self._url = path
self.ui = ui
m = re.match(r'^ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?$', path)
if not m:
self.abort(error.RepoError(_("couldn't parse location %s") % path))
self.user = m.group(2)
self.host = m.group(3)
self.port = m.group(5)
self.path = m.group(7) or "."
sshcmd = self.ui.config("ui", "ssh", "ssh")
remotecmd = self.ui.config("ui", "remotecmd", "hg")
args = util.sshargs(sshcmd, self.host, self.user, self.port)
if create:
cmd = '%s %s "%s init %s"'
cmd = cmd % (sshcmd, args, remotecmd, self.path)
ui.note(_('running %s\n') % cmd)
res = util.system(cmd)
if res != 0:
self.abort(error.RepoError(_("could not create remote repo")))
self.validate_repo(ui, sshcmd, args, remotecmd)
def url(self):
return self._url
def validate_repo(self, ui, sshcmd, args, remotecmd):
# cleanup up previous run
self.cleanup()
cmd = '%s %s "%s -R %s serve --stdio"'
cmd = cmd % (sshcmd, args, remotecmd, self.path)
cmd = util.quotecommand(cmd)
ui.note(_('running %s\n') % cmd)
self.pipeo, self.pipei, self.pipee = util.popen3(cmd)
# skip any noise generated by remote shell
self.do_cmd("hello")
r = self.do_cmd("between", pairs=("%s-%s" % ("0"*40, "0"*40)))
lines = ["", "dummy"]
max_noise = 500
while lines[-1] and max_noise:
l = r.readline()
self.readerr()
if lines[-1] == "1\n" and l == "\n":
break
if l:
ui.debug(_("remote: "), l)
lines.append(l)
max_noise -= 1
else:
self.abort(error.RepoError(_("no suitable response from remote hg")))
self.capabilities = set()
for l in reversed(lines):
if l.startswith("capabilities:"):
self.capabilities.update(l[:-1].split(":")[1].split())
break
def readerr(self):
while 1:
size = util.fstat(self.pipee).st_size
if size == 0: break
l = self.pipee.readline()
if not l: break
self.ui.status(_("remote: "), l)
def abort(self, exception):
self.cleanup()
raise exception
def cleanup(self):
try:
self.pipeo.close()
self.pipei.close()
# read the error descriptor until EOF
for l in self.pipee:
self.ui.status(_("remote: "), l)
self.pipee.close()
except:
pass
__del__ = cleanup
def do_cmd(self, cmd, **args):
self.ui.debug(_("sending %s command\n") % cmd)
self.pipeo.write("%s\n" % cmd)
for k, v in args.iteritems():
self.pipeo.write("%s %d\n" % (k, len(v)))
self.pipeo.write(v)
self.pipeo.flush()
return self.pipei
def call(self, cmd, **args):
self.do_cmd(cmd, **args)
return self._recv()
def _recv(self):
l = self.pipei.readline()
self.readerr()
try:
l = int(l)
except:
self.abort(error.ResponseError(_("unexpected response:"), l))
return self.pipei.read(l)
def _send(self, data, flush=False):
self.pipeo.write("%d\n" % len(data))
if data:
self.pipeo.write(data)
if flush:
self.pipeo.flush()
self.readerr()
def lock(self):
self.call("lock")
return remotelock(self)
def unlock(self):
self.call("unlock")
def lookup(self, key):
self.requirecap('lookup', _('look up remote revision'))
d = self.call("lookup", key=key)
success, data = d[:-1].split(" ", 1)
if int(success):
return bin(data)
else:
self.abort(error.RepoError(data))
def heads(self):
d = self.call("heads")
try:
return map(bin, d[:-1].split(" "))
except:
self.abort(error.ResponseError(_("unexpected response:"), d))
def branchmap(self):
d = self.call("branchmap")
try:
branchmap = {}
for branchpart in d.splitlines():
branchheads = branchpart.split(' ')
branchname = urllib.unquote(branchheads[0])
branchheads = [bin(x) for x in branchheads[1:]]
branchmap[branchname] = branchheads
return branchmap
except:
raise error.ResponseError(_("unexpected response:"), d)
def branches(self, nodes):
n = " ".join(map(hex, nodes))
d = self.call("branches", nodes=n)
try:
br = [ tuple(map(bin, b.split(" "))) for b in d.splitlines() ]
return br
except:
self.abort(error.ResponseError(_("unexpected response:"), d))
def between(self, pairs):
n = " ".join(["-".join(map(hex, p)) for p in pairs])
d = self.call("between", pairs=n)
try:
p = [ l and map(bin, l.split(" ")) or [] for l in d.splitlines() ]
return p
except:
self.abort(error.ResponseError(_("unexpected response:"), d))
def changegroup(self, nodes, kind):
n = " ".join(map(hex, nodes))
return self.do_cmd("changegroup", roots=n)
def changegroupsubset(self, bases, heads, kind):
self.requirecap('changegroupsubset', _('look up remote changes'))
bases = " ".join(map(hex, bases))
heads = " ".join(map(hex, heads))
return self.do_cmd("changegroupsubset", bases=bases, heads=heads)
def unbundle(self, cg, heads, source):
d = self.call("unbundle", heads=' '.join(map(hex, heads)))
if d:
# remote may send "unsynced changes"
self.abort(error.RepoError(_("push refused: %s") % d))
while 1:
d = cg.read(4096)
if not d:
break
self._send(d)
self._send("", flush=True)
r = self._recv()
if r:
# remote may send "unsynced changes"
self.abort(error.RepoError(_("push failed: %s") % r))
r = self._recv()
try:
return int(r)
except:
self.abort(error.ResponseError(_("unexpected response:"), r))
def addchangegroup(self, cg, source, url):
d = self.call("addchangegroup")
if d:
self.abort(error.RepoError(_("push refused: %s") % d))
while 1:
d = cg.read(4096)
if not d:
break
self.pipeo.write(d)
self.readerr()
self.pipeo.flush()
self.readerr()
r = self._recv()
if not r:
return 1
try:
return int(r)
except:
self.abort(error.ResponseError(_("unexpected response:"), r))
def stream_out(self):
return self.do_cmd('stream_out')
instance = sshrepository