Mercurial > hg
annotate hgext/largefiles/proto.py @ 28883:032c4c2f802a
pycompat: switch to util.urlreq/util.urlerr for py3 compat
author | timeless <timeless@mozdev.org> |
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date | Wed, 06 Apr 2016 23:22:12 +0000 |
parents | 33bd95443e7f |
children | 29139be0ccc7 |
rev | line source |
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15168 | 1 # Copyright 2011 Fog Creek Software |
2 # | |
3 # This software may be used and distributed according to the terms of the | |
4 # GNU General Public License version 2 or any later version. | |
5 | |
6 import os | |
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7 import re |
15168 | 8 |
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9 from mercurial import error, httppeer, util, wireproto |
15168 | 10 from mercurial.i18n import _ |
11 | |
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12 urlerr = util.urlerr |
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13 urlreq = util.urlreq |
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14 |
15168 | 15 import lfutil |
16 | |
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17 LARGEFILES_REQUIRED_MSG = ('\nThis repository uses the largefiles extension.' |
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18 '\n\nPlease enable it in your Mercurial config ' |
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19 'file.\n') |
15168 | 20 |
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21 # these will all be replaced by largefiles.uisetup |
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22 capabilitiesorig = None |
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23 ssholdcallstream = None |
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24 httpoldcallstream = None |
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25 |
15168 | 26 def putlfile(repo, proto, sha): |
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27 '''Server command for putting a largefile into a repository's local store |
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28 and into the user cache.''' |
15168 | 29 proto.redirect() |
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30 |
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31 path = lfutil.storepath(repo, sha) |
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32 util.makedirs(os.path.dirname(path)) |
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33 tmpfp = util.atomictempfile(path, createmode=repo.store.createmode) |
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34 |
15168 | 35 try: |
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36 proto.getfile(tmpfp) |
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37 tmpfp._fp.seek(0) |
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38 if sha != lfutil.hexsha1(tmpfp._fp): |
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39 raise IOError(0, _('largefile contents do not match hash')) |
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40 tmpfp.close() |
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41 lfutil.linktousercache(repo, sha) |
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42 except IOError as e: |
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43 repo.ui.warn(_('largefiles: failed to put %s into store: %s\n') % |
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44 (sha, e.strerror)) |
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45 return wireproto.pushres(1) |
15168 | 46 finally: |
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47 tmpfp.discard() |
15168 | 48 |
49 return wireproto.pushres(0) | |
50 | |
51 def getlfile(repo, proto, sha): | |
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52 '''Server command for retrieving a largefile from the repository-local |
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53 cache or user cache.''' |
15168 | 54 filename = lfutil.findfile(repo, sha) |
55 if not filename: | |
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56 raise error.Abort(_('requested largefile %s not present in cache') |
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57 % sha) |
15168 | 58 f = open(filename, 'rb') |
59 length = os.fstat(f.fileno())[6] | |
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60 |
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61 # Since we can't set an HTTP content-length header here, and |
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62 # Mercurial core provides no way to give the length of a streamres |
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63 # (and reading the entire file into RAM would be ill-advised), we |
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64 # just send the length on the first line of the response, like the |
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65 # ssh proto does for string responses. |
15168 | 66 def generator(): |
67 yield '%d\n' % length | |
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68 for chunk in util.filechunkiter(f): |
15168 | 69 yield chunk |
70 return wireproto.streamres(generator()) | |
71 | |
72 def statlfile(repo, proto, sha): | |
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73 '''Server command for checking if a largefile is present - returns '2\n' if |
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74 the largefile is missing, '0\n' if it seems to be in good condition. |
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75 |
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76 The value 1 is reserved for mismatched checksum, but that is too expensive |
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77 to be verified on every stat and must be caught be running 'hg verify' |
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78 server side.''' |
15168 | 79 filename = lfutil.findfile(repo, sha) |
80 if not filename: | |
81 return '2\n' | |
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82 return '0\n' |
15168 | 83 |
84 def wirereposetup(ui, repo): | |
85 class lfileswirerepository(repo.__class__): | |
86 def putlfile(self, sha, fd): | |
87 # unfortunately, httprepository._callpush tries to convert its | |
88 # input file-like into a bundle before sending it, so we can't use | |
89 # it ... | |
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90 if issubclass(self.__class__, httppeer.httppeer): |
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91 res = self._call('putlfile', data=fd, sha=sha, |
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92 headers={'content-type':'application/mercurial-0.1'}) |
15168 | 93 try: |
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94 d, output = res.split('\n', 1) |
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95 for l in output.splitlines(True): |
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96 self.ui.warn(_('remote: '), l) # assume l ends with \n |
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97 return int(d) |
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98 except ValueError: |
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99 self.ui.warn(_('unexpected putlfile response: %r\n') % res) |
15168 | 100 return 1 |
101 # ... but we can't use sshrepository._call because the data= | |
102 # argument won't get sent, and _callpush does exactly what we want | |
103 # in this case: send the data straight through | |
104 else: | |
105 try: | |
106 ret, output = self._callpush("putlfile", fd, sha=sha) | |
107 if ret == "": | |
108 raise error.ResponseError(_('putlfile failed:'), | |
109 output) | |
110 return int(ret) | |
111 except IOError: | |
112 return 1 | |
113 except ValueError: | |
114 raise error.ResponseError( | |
115 _('putlfile failed (unexpected response):'), ret) | |
116 | |
117 def getlfile(self, sha): | |
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118 """returns an iterable with the chunks of the file with sha sha""" |
15168 | 119 stream = self._callstream("getlfile", sha=sha) |
120 length = stream.readline() | |
121 try: | |
122 length = int(length) | |
123 except ValueError: | |
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124 self._abort(error.ResponseError(_("unexpected response:"), |
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125 length)) |
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126 |
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127 # SSH streams will block if reading more than length |
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128 for chunk in util.filechunkiter(stream, 128 * 1024, length): |
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129 yield chunk |
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130 # HTTP streams must hit the end to process the last empty |
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131 # chunk of Chunked-Encoding so the connection can be reused. |
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132 if issubclass(self.__class__, httppeer.httppeer): |
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133 chunk = stream.read(1) |
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134 if chunk: |
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135 self._abort(error.ResponseError(_("unexpected response:"), |
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136 chunk)) |
15168 | 137 |
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138 @wireproto.batchable |
15168 | 139 def statlfile(self, sha): |
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140 f = wireproto.future() |
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141 result = {'sha': sha} |
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142 yield result, f |
15168 | 143 try: |
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144 yield int(f.value) |
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145 except (ValueError, urlerr.httperror): |
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146 # If the server returns anything but an integer followed by a |
15168 | 147 # newline, newline, it's not speaking our language; if we get |
148 # an HTTP error, we can't be sure the largefile is present; | |
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149 # either way, consider it missing. |
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150 yield 2 |
15168 | 151 |
152 repo.__class__ = lfileswirerepository | |
153 | |
154 # advertise the largefiles=serve capability | |
155 def capabilities(repo, proto): | |
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156 '''Wrap server command to announce largefile server capability''' |
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157 return capabilitiesorig(repo, proto) + ' largefiles=serve' |
15168 | 158 |
159 def heads(repo, proto): | |
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160 '''Wrap server command - largefile capable clients will know to call |
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161 lheads instead''' |
15168 | 162 if lfutil.islfilesrepo(repo): |
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163 return wireproto.ooberror(LARGEFILES_REQUIRED_MSG) |
15168 | 164 return wireproto.heads(repo, proto) |
165 | |
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166 def sshrepocallstream(self, cmd, **args): |
15168 | 167 if cmd == 'heads' and self.capable('largefiles'): |
168 cmd = 'lheads' | |
169 if cmd == 'batch' and self.capable('largefiles'): | |
170 args['cmds'] = args['cmds'].replace('heads ', 'lheads ') | |
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171 return ssholdcallstream(self, cmd, **args) |
15168 | 172 |
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173 headsre = re.compile(r'(^|;)heads\b') |
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174 |
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175 def httprepocallstream(self, cmd, **args): |
15168 | 176 if cmd == 'heads' and self.capable('largefiles'): |
177 cmd = 'lheads' | |
178 if cmd == 'batch' and self.capable('largefiles'): | |
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179 args['cmds'] = headsre.sub('lheads', args['cmds']) |
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d87d9d8a8e03
largefiles: remove use of underscores that breaks coding convention
Na'Tosha Bard <natosha@unity3d.com>
parents:
16155
diff
changeset
|
180 return httpoldcallstream(self, cmd, **args) |