add support for streaming clone.
existing clone code uses pull to get changes from remote repo. is very
slow, uses lots of memory and cpu.
new clone code has server write file data straight to client, client
writes file data straight to disk. memory and cpu used are very low,
clone is much faster over lan.
new client can still clone with pull, can still clone from older servers.
new server can still serve older clients.
# statichttprepo.py - simple http repository class for mercurial
#
# This provides read-only repo access to repositories exported via static http
#
# Copyright 2005 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.
from demandload import demandload
demandload(globals(), "changelog filelog httprangereader")
demandload(globals(), "localrepo manifest os urllib urllib2")
class rangereader(httprangereader.httprangereader):
def read(self, size=None):
try:
return httprangereader.httprangereader.read(self, size)
except urllib2.HTTPError, inst:
raise IOError(None, inst)
except urllib2.URLError, inst:
raise IOError(None, inst.reason[1])
def opener(base):
"""return a function that opens files over http"""
p = base
def o(path, mode="r"):
f = os.path.join(p, urllib.quote(path))
return rangereader(f)
return o
class statichttprepository(localrepo.localrepository):
def __init__(self, ui, path):
self.path = (path + "/.hg")
self.ui = ui
self.revlogversion = 0
self.opener = opener(self.path)
self.manifest = manifest.manifest(self.opener)
self.changelog = changelog.changelog(self.opener)
self.tagscache = None
self.nodetagscache = None
self.encodepats = None
self.decodepats = None
def dev(self):
return -1
def local(self):
return False