Mercurial > hg > mercurial-crew-with-dirclash
annotate mercurial/statichttprepo.py @ 2439:e8c4f3d3df8c
extend network protocol to stop clients from locking servers
now all repositories have capabilities slot, tuple with list of names.
if 'unbundle' capability present, repo supports push where client does
not need to lock server. repository classes that have unbundle capability
also have unbundle method.
implemented for ssh now, will be base for push over http.
unbundle protocol acts this way. server tells client what heads it
has during normal negotiate step. client starts unbundle by repeat
server's heads back to it. if server has new heads, abort immediately.
otherwise, transfer changes to server. once data transferred, server
locks and checks heads again. if heads same, changes can be added.
else someone else added heads, and server aborts.
if client wants to force server to add heads, sends special heads list of
'force'.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Thu, 15 Jun 2006 16:37:23 -0700 |
parents | 74d3f5336b66 |
children | 109a22f5434a |
rev | line source |
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1101 | 1 # statichttprepo.py - simple http repository class for mercurial |
2 # | |
3 # This provides read-only repo access to repositories exported via static http | |
4 # | |
5 # Copyright 2005 Matt Mackall <mpm@selenic.com> | |
6 # | |
7 # This software may be used and distributed according to the terms | |
8 # of the GNU General Public License, incorporated herein by reference. | |
9 | |
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10 from demandload import demandload |
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11 demandload(globals(), "changelog filelog httprangereader") |
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12 demandload(globals(), "localrepo manifest os urllib urllib2") |
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13 |
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14 class rangereader(httprangereader.httprangereader): |
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15 def read(self, size=None): |
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16 try: |
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17 return httprangereader.httprangereader.read(self, size) |
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18 except urllib2.HTTPError, inst: |
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19 raise IOError(None, inst) |
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20 except urllib2.URLError, inst: |
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21 raise IOError(None, inst.reason[1]) |
1101 | 22 |
23 def opener(base): | |
24 """return a function that opens files over http""" | |
25 p = base | |
26 def o(path, mode="r"): | |
27 f = os.path.join(p, urllib.quote(path)) | |
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28 return rangereader(f) |
1101 | 29 return o |
30 | |
31 class statichttprepository(localrepo.localrepository): | |
32 def __init__(self, ui, path): | |
33 self.path = (path + "/.hg") | |
34 self.ui = ui | |
2072 | 35 self.revlogversion = 0 |
1101 | 36 self.opener = opener(self.path) |
37 self.manifest = manifest.manifest(self.opener) | |
38 self.changelog = changelog.changelog(self.opener) | |
39 self.tagscache = None | |
40 self.nodetagscache = None | |
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41 self.encodepats = None |
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42 self.decodepats = None |
1101 | 43 |
44 def dev(self): | |
45 return -1 | |
46 | |
47 def local(self): | |
48 return False |