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store: simplify walking...
store: simplify walking - fold in main walking function - eliminate recursion (especially recursive yielding!) - eliminate default args

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protocol.py
197 lines | 6.2 KiB | text/x-python | PythonLexer
#
# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import cStringIO, zlib, tempfile, errno, os, sys
from mercurial import util, streamclone
from mercurial.node import bin, hex
from mercurial import changegroup as changegroupmod
from common import HTTP_OK, HTTP_NOT_FOUND, HTTP_SERVER_ERROR
# __all__ is populated with the allowed commands. Be sure to add to it if
# you're adding a new command, or the new command won't work.
__all__ = [
'lookup', 'heads', 'branches', 'between', 'changegroup',
'changegroupsubset', 'capabilities', 'unbundle', 'stream_out',
]
HGTYPE = 'application/mercurial-0.1'
def lookup(repo, req):
try:
r = hex(repo.lookup(req.form['key'][0]))
success = 1
except Exception,inst:
r = str(inst)
success = 0
resp = "%s %s\n" % (success, r)
req.respond(HTTP_OK, HGTYPE, length=len(resp))
yield resp
def heads(repo, req):
resp = " ".join(map(hex, repo.heads())) + "\n"
req.respond(HTTP_OK, HGTYPE, length=len(resp))
yield resp
def branches(repo, req):
nodes = []
if 'nodes' in req.form:
nodes = map(bin, req.form['nodes'][0].split(" "))
resp = cStringIO.StringIO()
for b in repo.branches(nodes):
resp.write(" ".join(map(hex, b)) + "\n")
resp = resp.getvalue()
req.respond(HTTP_OK, HGTYPE, length=len(resp))
yield resp
def between(repo, req):
if 'pairs' in req.form:
pairs = [map(bin, p.split("-"))
for p in req.form['pairs'][0].split(" ")]
resp = cStringIO.StringIO()
for b in repo.between(pairs):
resp.write(" ".join(map(hex, b)) + "\n")
resp = resp.getvalue()
req.respond(HTTP_OK, HGTYPE, length=len(resp))
yield resp
def changegroup(repo, req):
req.respond(HTTP_OK, HGTYPE)
nodes = []
if 'roots' in req.form:
nodes = map(bin, req.form['roots'][0].split(" "))
z = zlib.compressobj()
f = repo.changegroup(nodes, 'serve')
while 1:
chunk = f.read(4096)
if not chunk:
break
yield z.compress(chunk)
yield z.flush()
def changegroupsubset(repo, req):
req.respond(HTTP_OK, HGTYPE)
bases = []
heads = []
if 'bases' in req.form:
bases = [bin(x) for x in req.form['bases'][0].split(' ')]
if 'heads' in req.form:
heads = [bin(x) for x in req.form['heads'][0].split(' ')]
z = zlib.compressobj()
f = repo.changegroupsubset(bases, heads, 'serve')
while 1:
chunk = f.read(4096)
if not chunk:
break
yield z.compress(chunk)
yield z.flush()
def capabilities(repo, req):
caps = ['lookup', 'changegroupsubset']
if repo.ui.configbool('server', 'uncompressed', untrusted=True):
caps.append('stream=%d' % repo.changelog.version)
if changegroupmod.bundlepriority:
caps.append('unbundle=%s' % ','.join(changegroupmod.bundlepriority))
rsp = ' '.join(caps)
req.respond(HTTP_OK, HGTYPE, length=len(rsp))
yield rsp
def unbundle(repo, req):
errorfmt = '0\n%s\n'
proto = req.env.get('wsgi.url_scheme') or 'http'
their_heads = req.form['heads'][0].split(' ')
def check_heads():
heads = map(hex, repo.heads())
return their_heads == [hex('force')] or their_heads == heads
# fail early if possible
if not check_heads():
length = int(req.env.get('CONTENT_LENGTH', 0))
for s in util.filechunkiter(req, limit=length):
# drain incoming bundle, else client will not see
# response when run outside cgi script
pass
req.respond(HTTP_OK, HGTYPE)
return errorfmt % 'unsynced changes',
req.respond(HTTP_OK, HGTYPE)
# do not lock repo until all changegroup data is
# streamed. save to temporary file.
fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
fp = os.fdopen(fd, 'wb+')
try:
length = int(req.env['CONTENT_LENGTH'])
for s in util.filechunkiter(req, limit=length):
fp.write(s)
try:
lock = repo.lock()
try:
if not check_heads():
return errorfmt % 'unsynced changes',
fp.seek(0)
header = fp.read(6)
if header.startswith('HG') and not header.startswith('HG10'):
raise ValueError('unknown bundle version')
elif header not in changegroupmod.bundletypes:
raise ValueError('unknown bundle compression type')
gen = changegroupmod.unbundle(header, fp)
# send addchangegroup output to client
oldio = sys.stdout, sys.stderr
sys.stderr = sys.stdout = cStringIO.StringIO()
try:
url = 'remote:%s:%s' % (proto,
req.env.get('REMOTE_HOST', ''))
try:
ret = repo.addchangegroup(gen, 'serve', url)
except util.Abort, inst:
sys.stdout.write("abort: %s\n" % inst)
ret = 0
finally:
val = sys.stdout.getvalue()
sys.stdout, sys.stderr = oldio
return '%d\n%s' % (ret, val),
finally:
del lock
except ValueError, inst:
return errorfmt % inst,
except (OSError, IOError), inst:
filename = getattr(inst, 'filename', '')
# Don't send our filesystem layout to the client
if filename.startswith(repo.root):
filename = filename[len(repo.root)+1:]
else:
filename = ''
error = getattr(inst, 'strerror', 'Unknown error')
if inst.errno == errno.ENOENT:
code = HTTP_NOT_FOUND
else:
code = HTTP_SERVER_ERROR
req.respond(code)
return '0\n%s: %s\n' % (error, filename),
finally:
fp.close()
os.unlink(tempname)
def stream_out(repo, req):
req.respond(HTTP_OK, HGTYPE)
streamclone.stream_out(repo, req, untrusted=True)
return []