Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/wireprotoserver.py @ 35897:a42455b3dbf8

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wireprotoserver: rename call to callhttp In the context of multiple handlers, call() is ambiguous. Differential Revision: https://phab.mercurial-scm.org/D1966
author Gregory Szorc <gregory.szorc@gmail.com>
date Wed, 31 Jan 2018 10:41:27 -0800
parents ef3a24a023ec
children 1b76a9e0a9de
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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2 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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3 #
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4 # This software may be used and distributed according to the terms of the
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5 # GNU General Public License version 2 or any later version.
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6
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7 from __future__ import absolute_import
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8
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9 import cgi
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10 import struct
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11
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12 from .hgweb.common import (
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13 HTTP_OK,
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14 )
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15 from . import (
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16 error,
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17 pycompat,
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18 util,
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19 wireproto,
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20 )
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21
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22 stringio = util.stringio
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23
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24 urlerr = util.urlerr
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25 urlreq = util.urlreq
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26
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27 HGTYPE = 'application/mercurial-0.1'
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28 HGTYPE2 = 'application/mercurial-0.2'
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29 HGERRTYPE = 'application/hg-error'
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30
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31 def decodevaluefromheaders(req, headerprefix):
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32 """Decode a long value from multiple HTTP request headers.
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33
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34 Returns the value as a bytes, not a str.
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35 """
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36 chunks = []
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37 i = 1
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38 prefix = headerprefix.upper().replace(r'-', r'_')
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39 while True:
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40 v = req.env.get(r'HTTP_%s_%d' % (prefix, i))
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41 if v is None:
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42 break
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43 chunks.append(pycompat.bytesurl(v))
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44 i += 1
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45
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46 return ''.join(chunks)
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47
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48 class webproto(wireproto.abstractserverproto):
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49 def __init__(self, req, ui):
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50 self.req = req
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51 self.response = ''
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52 self.ui = ui
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53 self.name = 'http'
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54
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55 def getargs(self, args):
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56 knownargs = self._args()
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57 data = {}
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58 keys = args.split()
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59 for k in keys:
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60 if k == '*':
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61 star = {}
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62 for key in knownargs.keys():
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63 if key != 'cmd' and key not in keys:
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64 star[key] = knownargs[key][0]
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65 data['*'] = star
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66 else:
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67 data[k] = knownargs[k][0]
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68 return [data[k] for k in keys]
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69 def _args(self):
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70 args = self.req.form.copy()
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71 if pycompat.ispy3:
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72 args = {k.encode('ascii'): [v.encode('ascii') for v in vs]
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73 for k, vs in args.items()}
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74 postlen = int(self.req.env.get(r'HTTP_X_HGARGS_POST', 0))
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75 if postlen:
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76 args.update(cgi.parse_qs(
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77 self.req.read(postlen), keep_blank_values=True))
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78 return args
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79
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80 argvalue = decodevaluefromheaders(self.req, r'X-HgArg')
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81 args.update(cgi.parse_qs(argvalue, keep_blank_values=True))
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82 return args
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83 def getfile(self, fp):
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84 length = int(self.req.env[r'CONTENT_LENGTH'])
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85 # If httppostargs is used, we need to read Content-Length
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86 # minus the amount that was consumed by args.
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87 length -= int(self.req.env.get(r'HTTP_X_HGARGS_POST', 0))
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88 for s in util.filechunkiter(self.req, limit=length):
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89 fp.write(s)
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90 def redirect(self):
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91 self.oldio = self.ui.fout, self.ui.ferr
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92 self.ui.ferr = self.ui.fout = stringio()
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93 def restore(self):
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94 val = self.ui.fout.getvalue()
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95 self.ui.ferr, self.ui.fout = self.oldio
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96 return val
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97
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98 def _client(self):
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99 return 'remote:%s:%s:%s' % (
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100 self.req.env.get('wsgi.url_scheme') or 'http',
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101 urlreq.quote(self.req.env.get('REMOTE_HOST', '')),
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102 urlreq.quote(self.req.env.get('REMOTE_USER', '')))
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103
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104 def responsetype(self, prefer_uncompressed):
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105 """Determine the appropriate response type and compression settings.
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106
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107 Returns a tuple of (mediatype, compengine, engineopts).
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108 """
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109 # Determine the response media type and compression engine based
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110 # on the request parameters.
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111 protocaps = decodevaluefromheaders(self.req, r'X-HgProto').split(' ')
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112
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113 if '0.2' in protocaps:
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114 # All clients are expected to support uncompressed data.
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115 if prefer_uncompressed:
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116 return HGTYPE2, util._noopengine(), {}
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117
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118 # Default as defined by wire protocol spec.
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119 compformats = ['zlib', 'none']
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120 for cap in protocaps:
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121 if cap.startswith('comp='):
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122 compformats = cap[5:].split(',')
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123 break
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124
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125 # Now find an agreed upon compression format.
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126 for engine in wireproto.supportedcompengines(self.ui, self,
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127 util.SERVERROLE):
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128 if engine.wireprotosupport().name in compformats:
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129 opts = {}
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130 level = self.ui.configint('server',
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131 '%slevel' % engine.name())
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132 if level is not None:
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133 opts['level'] = level
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134
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135 return HGTYPE2, engine, opts
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136
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137 # No mutually supported compression format. Fall back to the
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parents: 30759
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138 # legacy protocol.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
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139
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140 # Don't allow untrusted settings because disabling compression or
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parents: 30759
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141 # setting a very high compression level could lead to flooding
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parents: 30759
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142 # the server's network or CPU.
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35c233975b78 configitems: register the 'server.zliblevel' config
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 30764
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143 opts = {'level': self.ui.configint('server', 'zliblevel')}
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144 return HGTYPE, util.compengines['zlib'], opts
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145
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368cd5325348 protocol: move hgweb protocol support back into protocol.py
Matt Mackall <mpm@selenic.com>
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146 def iscmd(cmd):
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Matt Mackall <mpm@selenic.com>
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147 return cmd in wireproto.commands
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148
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a42455b3dbf8 wireprotoserver: rename call to callhttp
Gregory Szorc <gregory.szorc@gmail.com>
parents: 35896
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149 def callhttp(repo, req, cmd):
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Idan Kamara <idankk86@gmail.com>
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150 p = webproto(req, repo.ui)
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151
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Joerg Sonnenberger <joerg@bec.de>
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152 def genversion2(gen, engine, engineopts):
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153 # application/mercurial-0.2 always sends a payload header
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Gregory Szorc <gregory.szorc@gmail.com>
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154 # identifying the compression engine.
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
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155 name = engine.wireprotosupport().name
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
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156 assert 0 < len(name) < 256
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
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157 yield struct.pack('B', len(name))
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158 yield name
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159
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Joerg Sonnenberger <joerg@bec.de>
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160 for chunk in gen:
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161 yield chunk
30764
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162
11625
cdeb861335d5 protocol: wrap non-string protocol responses in classes
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 11623
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163 rsp = wireproto.dispatch(repo, p, cmd)
34510
c23fa3103925 hgweb: in protocol adapter, look for bytes instances, not str
Augie Fackler <augie@google.com>
parents: 34509
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164 if isinstance(rsp, bytes):
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e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
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165 req.respond(HTTP_OK, HGTYPE, body=rsp)
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parents: 18346
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166 return []
35750
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Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
167 elif isinstance(rsp, wireproto.streamres_legacy):
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parents: 35705
diff changeset
168 gen = rsp.gen
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Joerg Sonnenberger <joerg@bec.de>
parents: 35705
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169 req.respond(HTTP_OK, HGTYPE)
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170 return gen
11626
2f8adc60e013 protocol: use generators instead of req.write() for hgweb stream responses
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 11625
diff changeset
171 elif isinstance(rsp, wireproto.streamres):
35705
8cdb671dbd0b wireproto: drop support for reader interface from streamres (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 34744
diff changeset
172 gen = rsp.gen
30475
2add671bf55b wireproto: perform chunking and compression at protocol layer (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 30376
diff changeset
173
30764
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
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174 # This code for compression should not be streamres specific. It
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 30759
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175 # is here because we only compress streamres at the moment.
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Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
176 mediatype, engine, engineopts = p.responsetype(rsp.prefer_uncompressed)
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Joerg Sonnenberger <joerg@bec.de>
parents: 35705
diff changeset
177 gen = engine.compressstream(gen, engineopts)
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 30376
diff changeset
178
35750
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Joerg Sonnenberger <joerg@bec.de>
parents: 35705
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179 if mediatype == HGTYPE2:
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180 gen = genversion2(gen, engine, engineopts)
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181
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182 req.respond(HTTP_OK, mediatype)
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Gregory Szorc <gregory.szorc@gmail.com>
parents: 30376
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183 return gen
11626
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 11625
diff changeset
184 elif isinstance(rsp, wireproto.pushres):
14614
afccc64eea73 ui: use I/O descriptors internally
Idan Kamara <idankk86@gmail.com>
parents: 14494
diff changeset
185 val = p.restore()
18346
6c2563b2c1c6 hgweb: use Content-Length for pushres
Mads Kiilerich <mads@kiilerich.com>
parents: 15017
diff changeset
186 rsp = '%d\n%s' % (rsp.res, val)
18352
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
187 req.respond(HTTP_OK, HGTYPE, body=rsp)
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
188 return []
12703
40bb5853fc4b wireproto: introduce pusherr() to deal with "unsynced changes" error
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 11626
diff changeset
189 elif isinstance(rsp, wireproto.pusherr):
12704
ca6e2adc3e4d wireproto/http: drain the incoming bundle in case of errors
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 12703
diff changeset
190 # drain the incoming bundle
ca6e2adc3e4d wireproto/http: drain the incoming bundle in case of errors
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 12703
diff changeset
191 req.drain()
14614
afccc64eea73 ui: use I/O descriptors internally
Idan Kamara <idankk86@gmail.com>
parents: 14494
diff changeset
192 p.restore()
12703
40bb5853fc4b wireproto: introduce pusherr() to deal with "unsynced changes" error
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 11626
diff changeset
193 rsp = '0\n%s\n' % rsp.res
18352
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
194 req.respond(HTTP_OK, HGTYPE, body=rsp)
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
195 return []
15017
f4522df38c65 wireproto: add out-of-band error class to allow remote repo to report errors
Andrew Pritchard <andrewp@fogcreek.com>
parents: 14614
diff changeset
196 elif isinstance(rsp, wireproto.ooberror):
f4522df38c65 wireproto: add out-of-band error class to allow remote repo to report errors
Andrew Pritchard <andrewp@fogcreek.com>
parents: 14614
diff changeset
197 rsp = rsp.message
18352
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
198 req.respond(HTTP_OK, HGERRTYPE, body=rsp)
e33b9b92a200 hgweb: pass the actual response body to request.response, not just the length
Mads Kiilerich <mads@kiilerich.com>
parents: 18346
diff changeset
199 return []
34509
e21f274cccea hgweb: in protocol adapter, avoid control reaching end of non-void function
Augie Fackler <augie@google.com>
parents: 33842
diff changeset
200 raise error.ProgrammingError('hgweb.protocol internal failure', rsp)