Mercurial > hg
annotate mercurial/httppeer.py @ 47072:4c041c71ec01
revlog: introduce an explicit tracking of what the revlog is about
Since the dawn of time, people have been forced to rely to lossy introspection
of the index filename to determine what the purpose and role of the revlog they
encounter is. This is hacky, error prone, inflexible, abstraction-leaky,
<insert-your-own-complaints-here>.
In f63299ee7e4d Raphaël introduced a new attribute to track this information:
`revlog_kind`. However it is initialized in an odd place and various instances
end up not having it set. In addition is only tracking some of the information
we end up having to introspect in various pieces of code.
So we add a new attribute that holds more data and is more strictly enforced.
This work is done in collaboration with Raphaël.
The `revlog_kind` one will be removed/adapted in the next changeset. We expect
to be able to clean up various existing piece of code and to simplify coming
work around the newer revlog format.
Differential Revision: https://phab.mercurial-scm.org/D10352
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Tue, 06 Apr 2021 05:20:24 +0200 |
parents | ffd3e823a7e5 |
children | 04688c51f81f |
rev | line source |
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1 # httppeer.py - HTTP repository proxy classes for mercurial |
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2 # |
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3 # Copyright 2005, 2006 Olivia Mackall <olivia@selenic.com> |
2859 | 4 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
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5 # |
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6 # This software may be used and distributed according to the terms of the |
10263 | 7 # GNU General Public License version 2 or any later version. |
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8 |
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9 from __future__ import absolute_import |
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10 |
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11 import errno |
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12 import io |
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13 import os |
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14 import socket |
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15 import struct |
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16 import weakref |
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17 |
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18 from .i18n import _ |
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19 from .pycompat import getattr |
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20 from . import ( |
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21 bundle2, |
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22 error, |
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23 httpconnection, |
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24 pycompat, |
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25 statichttprepo, |
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26 url as urlmod, |
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27 util, |
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28 wireprotoframing, |
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29 wireprototypes, |
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30 wireprotov1peer, |
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31 wireprotov2peer, |
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32 wireprotov2server, |
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33 ) |
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34 from .interfaces import ( |
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35 repository, |
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36 util as interfaceutil, |
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37 ) |
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38 from .utils import ( |
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39 cborutil, |
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40 stringutil, |
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41 urlutil, |
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42 ) |
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43 |
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44 httplib = util.httplib |
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45 urlerr = util.urlerr |
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46 urlreq = util.urlreq |
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47 |
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48 |
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49 def encodevalueinheaders(value, header, limit): |
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50 """Encode a string value into multiple HTTP headers. |
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51 |
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52 ``value`` will be encoded into 1 or more HTTP headers with the names |
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53 ``header-<N>`` where ``<N>`` is an integer starting at 1. Each header |
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54 name + value will be at most ``limit`` bytes long. |
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55 |
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56 Returns an iterable of 2-tuples consisting of header names and |
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57 values as native strings. |
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58 """ |
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59 # HTTP Headers are ASCII. Python 3 requires them to be unicodes, |
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60 # not bytes. This function always takes bytes in as arguments. |
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61 fmt = pycompat.strurl(header) + r'-%s' |
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62 # Note: it is *NOT* a bug that the last bit here is a bytestring |
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63 # and not a unicode: we're just getting the encoded length anyway, |
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64 # and using an r-string to make it portable between Python 2 and 3 |
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65 # doesn't work because then the \r is a literal backslash-r |
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66 # instead of a carriage return. |
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67 valuelen = limit - len(fmt % '000') - len(b': \r\n') |
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68 result = [] |
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69 |
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70 n = 0 |
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71 for i in pycompat.xrange(0, len(value), valuelen): |
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72 n += 1 |
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73 result.append((fmt % str(n), pycompat.strurl(value[i : i + valuelen]))) |
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74 |
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75 return result |
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76 |
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77 |
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78 class _multifile(object): |
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79 def __init__(self, *fileobjs): |
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80 for f in fileobjs: |
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81 if not util.safehasattr(f, b'length'): |
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82 raise ValueError( |
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83 b'_multifile only supports file objects that ' |
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84 b'have a length but this one does not:', |
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85 type(f), |
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86 f, |
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87 ) |
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88 self._fileobjs = fileobjs |
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89 self._index = 0 |
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90 |
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91 @property |
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92 def length(self): |
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93 return sum(f.length for f in self._fileobjs) |
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94 |
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95 def read(self, amt=None): |
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96 if amt <= 0: |
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97 return b''.join(f.read() for f in self._fileobjs) |
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98 parts = [] |
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99 while amt and self._index < len(self._fileobjs): |
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100 parts.append(self._fileobjs[self._index].read(amt)) |
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101 got = len(parts[-1]) |
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102 if got < amt: |
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103 self._index += 1 |
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104 amt -= got |
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105 return b''.join(parts) |
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106 |
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107 def seek(self, offset, whence=os.SEEK_SET): |
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108 if whence != os.SEEK_SET: |
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109 raise NotImplementedError( |
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110 b'_multifile does not support anything other' |
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111 b' than os.SEEK_SET for whence on seek()' |
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112 ) |
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113 if offset != 0: |
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114 raise NotImplementedError( |
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115 b'_multifile only supports seeking to start, but that ' |
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116 b'could be fixed if you need it' |
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117 ) |
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118 for f in self._fileobjs: |
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119 f.seek(0) |
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120 self._index = 0 |
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121 |
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122 |
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123 def makev1commandrequest( |
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124 ui, requestbuilder, caps, capablefn, repobaseurl, cmd, args |
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125 ): |
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126 """Make an HTTP request to run a command for a version 1 client. |
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127 |
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128 ``caps`` is a set of known server capabilities. The value may be |
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129 None if capabilities are not yet known. |
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130 |
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131 ``capablefn`` is a function to evaluate a capability. |
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132 |
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133 ``cmd``, ``args``, and ``data`` define the command, its arguments, and |
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134 raw data to pass to it. |
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135 """ |
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136 if cmd == b'pushkey': |
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137 args[b'data'] = b'' |
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138 data = args.pop(b'data', None) |
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139 headers = args.pop(b'headers', {}) |
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140 |
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141 ui.debug(b"sending %s command\n" % cmd) |
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142 q = [(b'cmd', cmd)] |
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143 headersize = 0 |
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144 # Important: don't use self.capable() here or else you end up |
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145 # with infinite recursion when trying to look up capabilities |
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146 # for the first time. |
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147 postargsok = caps is not None and b'httppostargs' in caps |
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148 |
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149 # Send arguments via POST. |
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150 if postargsok and args: |
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151 strargs = urlreq.urlencode(sorted(args.items())) |
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152 if not data: |
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153 data = strargs |
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154 else: |
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155 if isinstance(data, bytes): |
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156 i = io.BytesIO(data) |
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157 i.length = len(data) |
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158 data = i |
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159 argsio = io.BytesIO(strargs) |
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160 argsio.length = len(strargs) |
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161 data = _multifile(argsio, data) |
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162 headers['X-HgArgs-Post'] = len(strargs) |
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163 elif args: |
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164 # Calling self.capable() can infinite loop if we are calling |
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165 # "capabilities". But that command should never accept wire |
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166 # protocol arguments. So this should never happen. |
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167 assert cmd != b'capabilities' |
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168 httpheader = capablefn(b'httpheader') |
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169 if httpheader: |
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170 headersize = int(httpheader.split(b',', 1)[0]) |
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171 |
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172 # Send arguments via HTTP headers. |
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173 if headersize > 0: |
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174 # The headers can typically carry more data than the URL. |
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175 encoded_args = urlreq.urlencode(sorted(args.items())) |
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176 for header, value in encodevalueinheaders( |
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177 encoded_args, b'X-HgArg', headersize |
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178 ): |
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179 headers[header] = value |
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180 # Send arguments via query string (Mercurial <1.9). |
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181 else: |
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182 q += sorted(args.items()) |
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183 |
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184 qs = b'?%s' % urlreq.urlencode(q) |
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185 cu = b"%s%s" % (repobaseurl, qs) |
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186 size = 0 |
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187 if util.safehasattr(data, b'length'): |
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188 size = data.length |
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189 elif data is not None: |
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190 size = len(data) |
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191 if data is not None and 'Content-Type' not in headers: |
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192 headers['Content-Type'] = 'application/mercurial-0.1' |
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193 |
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194 # Tell the server we accept application/mercurial-0.2 and multiple |
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195 # compression formats if the server is capable of emitting those |
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196 # payloads. |
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197 # Note: Keep this set empty by default, as client advertisement of |
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198 # protocol parameters should only occur after the handshake. |
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199 protoparams = set() |
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200 |
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201 mediatypes = set() |
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202 if caps is not None: |
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203 mt = capablefn(b'httpmediatype') |
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204 if mt: |
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205 protoparams.add(b'0.1') |
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206 mediatypes = set(mt.split(b',')) |
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207 |
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208 protoparams.add(b'partial-pull') |
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209 |
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210 if b'0.2tx' in mediatypes: |
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211 protoparams.add(b'0.2') |
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212 |
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213 if b'0.2tx' in mediatypes and capablefn(b'compression'): |
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214 # We /could/ compare supported compression formats and prune |
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215 # non-mutually supported or error if nothing is mutually supported. |
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216 # For now, send the full list to the server and have it error. |
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217 comps = [ |
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218 e.wireprotosupport().name |
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219 for e in util.compengines.supportedwireengines(util.CLIENTROLE) |
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220 ] |
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221 protoparams.add(b'comp=%s' % b','.join(comps)) |
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222 |
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223 if protoparams: |
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224 protoheaders = encodevalueinheaders( |
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225 b' '.join(sorted(protoparams)), b'X-HgProto', headersize or 1024 |
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226 ) |
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227 for header, value in protoheaders: |
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228 headers[header] = value |
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229 |
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230 varyheaders = [] |
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231 for header in headers: |
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232 if header.lower().startswith('x-hg'): |
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233 varyheaders.append(header) |
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234 |
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235 if varyheaders: |
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236 headers['Vary'] = ','.join(sorted(varyheaders)) |
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237 |
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238 req = requestbuilder(pycompat.strurl(cu), data, headers) |
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239 |
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240 if data is not None: |
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241 ui.debug(b"sending %d bytes\n" % size) |
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242 req.add_unredirected_header('Content-Length', '%d' % size) |
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243 |
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244 return req, cu, qs |
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245 |
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246 |
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247 def _reqdata(req): |
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248 """Get request data, if any. If no data, returns None.""" |
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249 if pycompat.ispy3: |
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250 return req.data |
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251 if not req.has_data(): |
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252 return None |
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253 return req.get_data() |
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254 |
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255 |
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256 def sendrequest(ui, opener, req): |
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257 """Send a prepared HTTP request. |
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258 |
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259 Returns the response object. |
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260 """ |
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261 dbg = ui.debug |
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262 if ui.debugflag and ui.configbool(b'devel', b'debug.peer-request'): |
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263 line = b'devel-peer-request: %s\n' |
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264 dbg( |
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265 line |
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266 % b'%s %s' |
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267 % ( |
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268 pycompat.bytesurl(req.get_method()), |
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269 pycompat.bytesurl(req.get_full_url()), |
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270 ) |
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271 ) |
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272 hgargssize = None |
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273 |
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274 for header, value in sorted(req.header_items()): |
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275 header = pycompat.bytesurl(header) |
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276 value = pycompat.bytesurl(value) |
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277 if header.startswith(b'X-hgarg-'): |
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278 if hgargssize is None: |
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279 hgargssize = 0 |
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280 hgargssize += len(value) |
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281 else: |
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282 dbg(line % b' %s %s' % (header, value)) |
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283 |
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284 if hgargssize is not None: |
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285 dbg( |
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286 line |
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287 % b' %d bytes of commands arguments in headers' |
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288 % hgargssize |
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289 ) |
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290 data = _reqdata(req) |
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291 if data is not None: |
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292 length = getattr(data, 'length', None) |
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293 if length is None: |
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294 length = len(data) |
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295 dbg(line % b' %d bytes of data' % length) |
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296 |
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297 start = util.timer() |
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298 |
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299 res = None |
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300 try: |
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301 res = opener.open(req) |
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302 except urlerr.httperror as inst: |
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303 if inst.code == 401: |
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304 raise error.Abort(_(b'authorization failed')) |
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305 raise |
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306 except httplib.HTTPException as inst: |
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307 ui.debug( |
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308 b'http error requesting %s\n' |
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309 % urlutil.hidepassword(req.get_full_url()) |
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310 ) |
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311 ui.traceback() |
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312 raise IOError(None, inst) |
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313 finally: |
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314 if ui.debugflag and ui.configbool(b'devel', b'debug.peer-request'): |
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315 code = res.code if res else -1 |
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316 dbg( |
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317 line |
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318 % b' finished in %.4f seconds (%d)' |
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319 % (util.timer() - start, code) |
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320 ) |
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321 |
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322 # Insert error handlers for common I/O failures. |
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323 urlmod.wrapresponse(res) |
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324 |
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325 return res |
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326 |
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327 |
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328 class RedirectedRepoError(error.RepoError): |
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329 def __init__(self, msg, respurl): |
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330 super(RedirectedRepoError, self).__init__(msg) |
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331 self.respurl = respurl |
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332 |
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333 |
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334 def parsev1commandresponse( |
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335 ui, baseurl, requrl, qs, resp, compressible, allowcbor=False |
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336 ): |
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337 # record the url we got redirected to |
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338 redirected = False |
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339 respurl = pycompat.bytesurl(resp.geturl()) |
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340 if respurl.endswith(qs): |
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341 respurl = respurl[: -len(qs)] |
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342 qsdropped = False |
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343 else: |
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344 qsdropped = True |
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345 |
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346 if baseurl.rstrip(b'/') != respurl.rstrip(b'/'): |
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347 redirected = True |
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348 if not ui.quiet: |
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349 ui.warn(_(b'real URL is %s\n') % respurl) |
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350 |
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351 try: |
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352 proto = pycompat.bytesurl(resp.getheader('content-type', '')) |
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353 except AttributeError: |
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354 proto = pycompat.bytesurl(resp.headers.get('content-type', '')) |
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355 |
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356 safeurl = urlutil.hidepassword(baseurl) |
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357 if proto.startswith(b'application/hg-error'): |
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358 raise error.OutOfBandError(resp.read()) |
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359 |
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360 # Pre 1.0 versions of Mercurial used text/plain and |
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361 # application/hg-changegroup. We don't support such old servers. |
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362 if not proto.startswith(b'application/mercurial-'): |
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363 ui.debug(b"requested URL: '%s'\n" % urlutil.hidepassword(requrl)) |
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364 msg = _( |
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365 b"'%s' does not appear to be an hg repository:\n" |
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366 b"---%%<--- (%s)\n%s\n---%%<---\n" |
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367 ) % (safeurl, proto or b'no content-type', resp.read(1024)) |
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368 |
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369 # Some servers may strip the query string from the redirect. We |
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370 # raise a special error type so callers can react to this specially. |
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371 if redirected and qsdropped: |
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372 raise RedirectedRepoError(msg, respurl) |
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373 else: |
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374 raise error.RepoError(msg) |
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375 |
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376 try: |
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377 subtype = proto.split(b'-', 1)[1] |
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378 |
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379 # Unless we end up supporting CBOR in the legacy wire protocol, |
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380 # this should ONLY be encountered for the initial capabilities |
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381 # request during handshake. |
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382 if subtype == b'cbor': |
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383 if allowcbor: |
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384 return respurl, proto, resp |
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385 else: |
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386 raise error.RepoError( |
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387 _(b'unexpected CBOR response from server') |
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388 ) |
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389 |
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390 version_info = tuple([int(n) for n in subtype.split(b'.')]) |
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391 except ValueError: |
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392 raise error.RepoError( |
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393 _(b"'%s' sent a broken Content-Type header (%s)") % (safeurl, proto) |
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394 ) |
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395 |
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396 # TODO consider switching to a decompression reader that uses |
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397 # generators. |
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398 if version_info == (0, 1): |
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399 if compressible: |
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400 resp = util.compengines[b'zlib'].decompressorreader(resp) |
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401 |
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402 elif version_info == (0, 2): |
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403 # application/mercurial-0.2 always identifies the compression |
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404 # engine in the payload header. |
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405 elen = struct.unpack(b'B', util.readexactly(resp, 1))[0] |
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406 ename = util.readexactly(resp, elen) |
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407 engine = util.compengines.forwiretype(ename) |
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408 |
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409 resp = engine.decompressorreader(resp) |
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410 else: |
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411 raise error.RepoError( |
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412 _(b"'%s' uses newer protocol %s") % (safeurl, subtype) |
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413 ) |
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414 |
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415 return respurl, proto, resp |
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416 |
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417 |
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418 class httppeer(wireprotov1peer.wirepeer): |
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419 def __init__(self, ui, path, url, opener, requestbuilder, caps): |
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420 self.ui = ui |
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421 self._path = path |
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422 self._url = url |
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423 self._caps = caps |
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424 self.limitedarguments = caps is not None and b'httppostargs' not in caps |
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425 self._urlopener = opener |
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426 self._requestbuilder = requestbuilder |
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427 |
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428 def __del__(self): |
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429 for h in self._urlopener.handlers: |
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430 h.close() |
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431 getattr(h, "close_all", lambda: None)() |
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432 |
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433 # Begin of ipeerconnection interface. |
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434 |
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435 def url(self): |
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436 return self._path |
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437 |
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438 def local(self): |
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439 return None |
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440 |
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441 def peer(self): |
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442 return self |
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443 |
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444 def canpush(self): |
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445 return True |
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446 |
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447 def close(self): |
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448 try: |
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449 reqs, sent, recv = ( |
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450 self._urlopener.requestscount, |
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451 self._urlopener.sentbytescount, |
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452 self._urlopener.receivedbytescount, |
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453 ) |
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454 except AttributeError: |
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455 return |
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456 self.ui.note( |
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|
457 _( |
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458 b'(sent %d HTTP requests and %d bytes; ' |
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|
459 b'received %d bytes in responses)\n' |
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|
460 ) |
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461 % (reqs, sent, recv) |
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462 ) |
13603
395a84f78736
httprepo: use caps instead of between for compat check
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents:
13555
diff
changeset
|
463 |
37320
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repository: port peer interfaces to zope.interface
Gregory Szorc <gregory.szorc@gmail.com>
parents:
37006
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|
464 # End of ipeerconnection interface. |
33805
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parents:
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|
465 |
37320
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repository: port peer interfaces to zope.interface
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parents:
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diff
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|
466 # Begin of ipeercommands interface. |
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467 |
f913e90f15a0
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parents:
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diff
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|
468 def capabilities(self): |
33705
73fd395ee29e
httppeer: make several instance attributes internal (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
33704
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|
469 return self._caps |
2442
c660691fb45d
http: query server for capabilities
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parents:
2439
diff
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|
470 |
37320
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repository: port peer interfaces to zope.interface
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parents:
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|
471 # End of ipeercommands interface. |
33805
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parents:
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|
472 |
30464
e16e234b9ca3
httppeer: do decompression inside _callstream
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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|
473 def _callstream(self, cmd, _compressible=False, **args): |
35359
98bc4c43f570
py3: handle keyword arguments correctly in httppeer.py
Pulkit Goyal <7895pulkit@gmail.com>
parents:
35197
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|
474 args = pycompat.byteskwargs(args) |
36218
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httppeer: change logic around argument handling
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parents:
35884
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475 |
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476 req, cu, qs = makev1commandrequest( |
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477 self.ui, |
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478 self._requestbuilder, |
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479 self._caps, |
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480 self.capable, |
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481 self._url, |
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482 cmd, |
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483 args, |
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484 ) |
30763
a520aefb96f1
httppeer: advertise and support application/mercurial-0.2
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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485 |
37550
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Gregory Szorc <gregory.szorc@gmail.com>
parents:
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486 resp = sendrequest(self.ui, self._urlopener, req) |
32002
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httppeer: wrap HTTPResponse.read() globally
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parents:
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487 |
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488 self._url, ct, resp = parsev1commandresponse( |
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489 self.ui, self._url, cu, qs, resp, _compressible |
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490 ) |
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parents:
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491 |
752 | 492 return resp |
60 | 493 |
11589
e8d22fe2ddab
protocol: clean up call-like functions in http and ssh clients
Matt Mackall <mpm@selenic.com>
parents:
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494 def _call(self, cmd, **args): |
e8d22fe2ddab
protocol: clean up call-like functions in http and ssh clients
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parents:
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diff
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|
495 fp = self._callstream(cmd, **args) |
2435
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496 try: |
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|
497 return fp.read() |
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|
498 finally: |
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parents:
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|
499 # if using keepalive, allow connection to be reused |
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parents:
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|
500 fp.close() |
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parents:
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|
501 |
11592
26e0782b8380
protocol: unify client unbundle support
Matt Mackall <mpm@selenic.com>
parents:
11591
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|
502 def _callpush(self, cmd, cg, **args): |
2465
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parents:
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503 # have to stream bundle to a temp file because we do not have |
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504 # http 1.1 chunked transfer. |
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|
505 |
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changeset
|
506 types = self.capable(b'unbundle') |
3703
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fix push over HTTP to older servers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
3662
diff
changeset
|
507 try: |
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|
508 types = types.split(b',') |
3703
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fix push over HTTP to older servers
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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|
509 except AttributeError: |
14060
aaa9a5989405
bundle: more comments about the different header types, remove useless if
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parents:
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diff
changeset
|
510 # servers older than d1b16a746db6 will send 'unbundle' as a |
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511 # boolean capability. They only support headerless/uncompressed |
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|
512 # bundles. |
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513 types = [b""] |
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parents:
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|
514 for x in types: |
28666
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bundle: move writebundle() from changegroup.py to bundle2.py (API)
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parents:
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changeset
|
515 if x in bundle2.bundletypes: |
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|
516 type = x |
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|
517 break |
3613
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Client support for hgweb unbundle with versions.
Thomas Arendsen Hein <thomas@intevation.de>
parents:
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|
518 |
28666
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|
519 tempname = bundle2.writebundle(self.ui, cg, None, type) |
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520 fp = httpconnection.httpsendfile(self.ui, tempname, b"rb") |
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|
521 headers = {'Content-Type': 'application/mercurial-0.1'} |
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parents:
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|
522 |
2465
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|
523 try: |
25085
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parents:
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|
524 r = self._call(cmd, data=fp, headers=headers, **args) |
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|
525 vals = r.split(b'\n', 1) |
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parents:
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|
526 if len(vals) < 2: |
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|
527 raise error.ResponseError(_(b"unexpected response:"), r) |
25085
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parents:
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diff
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|
528 return vals |
36430
efebfa9b4cab
httppeer: explicitly catch urlerr.httperror and re-raise
Augie Fackler <augie@google.com>
parents:
36426
diff
changeset
|
529 except urlerr.httperror: |
efebfa9b4cab
httppeer: explicitly catch urlerr.httperror and re-raise
Augie Fackler <augie@google.com>
parents:
36426
diff
changeset
|
530 # Catch and re-raise these so we don't try and treat them |
efebfa9b4cab
httppeer: explicitly catch urlerr.httperror and re-raise
Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
531 # like generic socket errors. They lack any values in |
efebfa9b4cab
httppeer: explicitly catch urlerr.httperror and re-raise
Augie Fackler <augie@google.com>
parents:
36426
diff
changeset
|
532 # .args on Python 3 which breaks our socket.error block. |
efebfa9b4cab
httppeer: explicitly catch urlerr.httperror and re-raise
Augie Fackler <augie@google.com>
parents:
36426
diff
changeset
|
533 raise |
25660
328739ea70c3
global: mass rewrite to use modern exception syntax
Gregory Szorc <gregory.szorc@gmail.com>
parents:
25500
diff
changeset
|
534 except socket.error as err: |
25085
e05734cd7902
httppeer: use try/except/finally
Matt Mackall <mpm@selenic.com>
parents:
23895
diff
changeset
|
535 if err.args[0] in (errno.ECONNRESET, errno.EPIPE): |
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parents:
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diff
changeset
|
536 raise error.Abort(_(b'push failed: %s') % err.args[1]) |
26587
56b2bcea2529
error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
25954
diff
changeset
|
537 raise error.Abort(err.args[1]) |
2465
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parents:
2447
diff
changeset
|
538 finally: |
c91118f425d0
push over http: client support.
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parents:
2447
diff
changeset
|
539 fp.close() |
c91118f425d0
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parents:
2447
diff
changeset
|
540 os.unlink(tempname) |
2439
e8c4f3d3df8c
extend network protocol to stop clients from locking servers
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2435
diff
changeset
|
541 |
21074
f8a0d82b0463
httppeer: support for _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
542 def _calltwowaystream(self, cmd, fp, **args): |
f8a0d82b0463
httppeer: support for _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
543 filename = None |
f8a0d82b0463
httppeer: support for _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
544 try: |
f8a0d82b0463
httppeer: support for _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
545 # dump bundle to disk |
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changeset
|
546 fd, filename = pycompat.mkstemp(prefix=b"hg-bundle-", suffix=b".hg") |
43503
313e3a279828
cleanup: remove pointless r-prefixes on double-quoted strings
Augie Fackler <augie@google.com>
parents:
43117
diff
changeset
|
547 with os.fdopen(fd, "wb") as fh: |
21074
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httppeer: support for _calltwowaystream
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
20905
diff
changeset
|
548 d = fp.read(4096) |
42852
58f73e9ccfff
httppeer: use context manager when writing temporary bundle to send
Martin von Zweigbergk <martinvonz@google.com>
parents:
42814
diff
changeset
|
549 while d: |
58f73e9ccfff
httppeer: use context manager when writing temporary bundle to send
Martin von Zweigbergk <martinvonz@google.com>
parents:
42814
diff
changeset
|
550 fh.write(d) |
58f73e9ccfff
httppeer: use context manager when writing temporary bundle to send
Martin von Zweigbergk <martinvonz@google.com>
parents:
42814
diff
changeset
|
551 d = fp.read(4096) |
21074
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parents:
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changeset
|
552 # start http push |
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|
553 with httpconnection.httpsendfile(self.ui, filename, b"rb") as fp_: |
43506
9f70512ae2cf
cleanup: remove pointless r-prefixes on single-quoted strings
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parents:
43503
diff
changeset
|
554 headers = {'Content-Type': 'application/mercurial-0.1'} |
42853
37debb6771f5
httppeer: use context manager when reading temporary bundle to send
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parents:
42852
diff
changeset
|
555 return self._callstream(cmd, data=fp_, headers=headers, **args) |
21074
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parents:
20905
diff
changeset
|
556 finally: |
42852
58f73e9ccfff
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parents:
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diff
changeset
|
557 if filename is not None: |
21074
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parents:
20905
diff
changeset
|
558 os.unlink(filename) |
f8a0d82b0463
httppeer: support for _calltwowaystream
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parents:
20905
diff
changeset
|
559 |
20905
167047ba3cfa
wireproto: drop the _decompress method in favor a new call type
Pierre-Yves David <pierre-yves.david@fb.com>
parents:
18742
diff
changeset
|
560 def _callcompressable(self, cmd, **args): |
30464
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httppeer: do decompression inside _callstream
Gregory Szorc <gregory.szorc@gmail.com>
parents:
30241
diff
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|
561 return self._callstream(cmd, _compressible=True, **args) |
11370 | 562 |
21188
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parents:
21074
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changeset
|
563 def _abort(self, exception): |
d36440d84328
httppeer: reintroduce _abort that accidentally was removed in 167047ba3cfa
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21074
diff
changeset
|
564 raise exception |
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21074
diff
changeset
|
565 |
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changeset
|
566 |
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changeset
|
567 def sendv2request( |
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changeset
|
568 ui, opener, requestbuilder, apiurl, permission, requests, redirect |
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changeset
|
569 ): |
40133
762ef19a07e3
wireprotov2: send protocol settings frame from client
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40129
diff
changeset
|
570 wireprotoframing.populatestreamencoders() |
762ef19a07e3
wireprotov2: send protocol settings frame from client
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40129
diff
changeset
|
571 |
762ef19a07e3
wireprotov2: send protocol settings frame from client
Gregory Szorc <gregory.szorc@gmail.com>
parents:
40129
diff
changeset
|
572 uiencoders = ui.configlist(b'experimental', b'httppeer.v2-encoder-order') |
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573 |
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574 if uiencoders: |
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575 encoders = [] |
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576 |
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577 for encoder in uiencoders: |
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578 if encoder not in wireprotoframing.STREAM_ENCODERS: |
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579 ui.warn( |
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580 _( |
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581 b'wire protocol version 2 encoder referenced in ' |
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582 b'config (%s) is not known; ignoring\n' |
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583 ) |
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584 % encoder |
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585 ) |
40133
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586 else: |
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587 encoders.append(encoder) |
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588 |
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589 else: |
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590 encoders = wireprotoframing.STREAM_ENCODERS_ORDER |
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591 |
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592 reactor = wireprotoframing.clientreactor( |
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593 ui, |
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594 hasmultiplesend=False, |
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595 buffersends=True, |
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596 clientcontentencoders=encoders, |
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597 ) |
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598 |
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599 handler = wireprotov2peer.clienthandler( |
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600 ui, reactor, opener=opener, requestbuilder=requestbuilder |
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601 ) |
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602 |
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603 url = b'%s/%s' % (apiurl, permission) |
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604 |
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605 if len(requests) > 1: |
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606 url += b'/multirequest' |
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607 else: |
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608 url += b'/%s' % requests[0][0] |
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609 |
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610 ui.debug(b'sending %d commands\n' % len(requests)) |
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611 for command, args, f in requests: |
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612 ui.debug( |
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613 b'sending command %s: %s\n' |
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614 % (command, stringutil.pprint(args, indent=2)) |
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615 ) |
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616 assert not list( |
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617 handler.callcommand(command, args, f, redirect=redirect) |
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618 ) |
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619 |
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620 # TODO stream this. |
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621 body = b''.join(map(bytes, handler.flushcommands())) |
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622 |
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623 # TODO modify user-agent to reflect v2 |
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624 headers = { |
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625 'Accept': wireprotov2server.FRAMINGTYPE, |
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626 'Content-Type': wireprotov2server.FRAMINGTYPE, |
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627 } |
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628 |
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629 req = requestbuilder(pycompat.strurl(url), body, headers) |
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630 req.add_unredirected_header('Content-Length', '%d' % len(body)) |
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631 |
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632 try: |
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633 res = opener.open(req) |
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634 except urlerr.httperror as e: |
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635 if e.code == 401: |
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636 raise error.Abort(_(b'authorization failed')) |
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637 |
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638 raise |
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639 except httplib.HTTPException as e: |
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640 ui.traceback() |
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641 raise IOError(None, e) |
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642 |
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643 return handler, res |
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644 |
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645 |
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646 class queuedcommandfuture(pycompat.futures.Future): |
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647 """Wraps result() on command futures to trigger submission on call.""" |
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648 |
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649 def result(self, timeout=None): |
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650 if self.done(): |
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651 return pycompat.futures.Future.result(self, timeout) |
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652 |
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653 self._peerexecutor.sendcommands() |
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654 |
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655 # sendcommands() will restore the original __class__ and self.result |
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656 # will resolve to Future.result. |
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657 return self.result(timeout) |
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658 |
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659 |
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660 @interfaceutil.implementer(repository.ipeercommandexecutor) |
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661 class httpv2executor(object): |
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662 def __init__( |
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663 self, ui, opener, requestbuilder, apiurl, descriptor, redirect |
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664 ): |
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665 self._ui = ui |
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666 self._opener = opener |
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667 self._requestbuilder = requestbuilder |
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668 self._apiurl = apiurl |
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669 self._descriptor = descriptor |
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670 self._redirect = redirect |
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671 self._sent = False |
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672 self._closed = False |
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673 self._neededpermissions = set() |
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674 self._calls = [] |
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675 self._futures = weakref.WeakSet() |
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676 self._responseexecutor = None |
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677 self._responsef = None |
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678 |
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679 def __enter__(self): |
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680 return self |
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681 |
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682 def __exit__(self, exctype, excvalue, exctb): |
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683 self.close() |
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684 |
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685 def callcommand(self, command, args): |
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686 if self._sent: |
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687 raise error.ProgrammingError( |
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688 b'callcommand() cannot be used after commands are sent' |
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689 ) |
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690 |
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691 if self._closed: |
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692 raise error.ProgrammingError( |
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693 b'callcommand() cannot be used after close()' |
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694 ) |
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695 |
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696 # The service advertises which commands are available. So if we attempt |
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697 # to call an unknown command or pass an unknown argument, we can screen |
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698 # for this. |
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699 if command not in self._descriptor[b'commands']: |
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700 raise error.ProgrammingError( |
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701 b'wire protocol command %s is not available' % command |
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702 ) |
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703 |
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704 cmdinfo = self._descriptor[b'commands'][command] |
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705 unknownargs = set(args.keys()) - set(cmdinfo.get(b'args', {})) |
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706 |
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707 if unknownargs: |
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708 raise error.ProgrammingError( |
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709 b'wire protocol command %s does not accept argument: %s' |
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710 % (command, b', '.join(sorted(unknownargs))) |
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711 ) |
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712 |
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713 self._neededpermissions |= set(cmdinfo[b'permissions']) |
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714 |
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715 # TODO we /could/ also validate types here, since the API descriptor |
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716 # includes types... |
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717 |
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718 f = pycompat.futures.Future() |
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719 |
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720 # Monkeypatch it so result() triggers sendcommands(), otherwise result() |
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721 # could deadlock. |
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722 f.__class__ = queuedcommandfuture |
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723 f._peerexecutor = self |
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724 |
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725 self._futures.add(f) |
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726 self._calls.append((command, args, f)) |
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727 |
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728 return f |
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729 |
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730 def sendcommands(self): |
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731 if self._sent: |
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732 return |
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733 |
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734 if not self._calls: |
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735 return |
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736 |
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737 self._sent = True |
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738 |
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739 # Unhack any future types so caller sees a clean type and so we |
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740 # break reference cycle. |
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741 for f in self._futures: |
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742 if isinstance(f, queuedcommandfuture): |
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743 f.__class__ = pycompat.futures.Future |
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744 f._peerexecutor = None |
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745 |
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746 # Mark the future as running and filter out cancelled futures. |
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747 calls = [ |
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748 (command, args, f) |
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749 for command, args, f in self._calls |
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750 if f.set_running_or_notify_cancel() |
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751 ] |
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752 |
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753 # Clear out references, prevent improper object usage. |
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754 self._calls = None |
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755 |
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756 if not calls: |
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757 return |
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758 |
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759 permissions = set(self._neededpermissions) |
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760 |
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761 if b'push' in permissions and b'pull' in permissions: |
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762 permissions.remove(b'pull') |
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763 |
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764 if len(permissions) > 1: |
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765 raise error.RepoError( |
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|
766 _(b'cannot make request requiring multiple permissions: %s') |
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767 % _(b', ').join(sorted(permissions)) |
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768 ) |
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|
769 |
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|
770 permission = { |
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771 b'push': b'rw', |
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772 b'pull': b'ro', |
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773 }[permissions.pop()] |
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774 |
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|
775 handler, resp = sendv2request( |
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776 self._ui, |
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777 self._opener, |
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778 self._requestbuilder, |
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779 self._apiurl, |
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780 permission, |
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781 calls, |
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782 self._redirect, |
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783 ) |
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784 |
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785 # TODO we probably want to validate the HTTP code, media type, etc. |
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786 |
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787 self._responseexecutor = pycompat.futures.ThreadPoolExecutor(1) |
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788 self._responsef = self._responseexecutor.submit( |
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789 self._handleresponse, handler, resp |
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790 ) |
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791 |
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792 def close(self): |
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793 if self._closed: |
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794 return |
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795 |
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796 self.sendcommands() |
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797 |
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798 self._closed = True |
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799 |
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800 if not self._responsef: |
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801 return |
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802 |
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803 # TODO ^C here may not result in immediate program termination. |
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804 |
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805 try: |
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806 self._responsef.result() |
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807 finally: |
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808 self._responseexecutor.shutdown(wait=True) |
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809 self._responsef = None |
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810 self._responseexecutor = None |
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811 |
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812 # If any of our futures are still in progress, mark them as |
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813 # errored, otherwise a result() could wait indefinitely. |
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814 for f in self._futures: |
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815 if not f.done(): |
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816 f.set_exception( |
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817 error.ResponseError(_(b'unfulfilled command response')) |
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818 ) |
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819 |
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820 self._futures = None |
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821 |
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|
822 def _handleresponse(self, handler, resp): |
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823 # Called in a thread to read the response. |
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824 |
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825 while handler.readdata(resp): |
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826 pass |
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827 |
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828 |
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829 @interfaceutil.implementer(repository.ipeerv2) |
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830 class httpv2peer(object): |
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831 |
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832 limitedarguments = False |
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833 |
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834 def __init__( |
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835 self, ui, repourl, apipath, opener, requestbuilder, apidescriptor |
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836 ): |
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837 self.ui = ui |
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838 self.apidescriptor = apidescriptor |
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839 |
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840 if repourl.endswith(b'/'): |
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841 repourl = repourl[:-1] |
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842 |
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843 self._url = repourl |
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844 self._apipath = apipath |
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845 self._apiurl = b'%s/%s' % (repourl, apipath) |
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846 self._opener = opener |
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847 self._requestbuilder = requestbuilder |
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|
848 |
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|
849 self._redirect = wireprotov2peer.supportedredirects(ui, apidescriptor) |
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850 |
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851 # Start of ipeerconnection. |
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852 |
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853 def url(self): |
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854 return self._url |
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855 |
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856 def local(self): |
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857 return None |
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858 |
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859 def peer(self): |
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860 return self |
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861 |
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862 def canpush(self): |
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863 # TODO change once implemented. |
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864 return False |
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865 |
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866 def close(self): |
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|
867 self.ui.note( |
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868 _( |
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869 b'(sent %d HTTP requests and %d bytes; ' |
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870 b'received %d bytes in responses)\n' |
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871 ) |
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872 % ( |
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873 self._opener.requestscount, |
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874 self._opener.sentbytescount, |
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875 self._opener.receivedbytescount, |
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876 ) |
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877 ) |
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|
878 |
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879 # End of ipeerconnection. |
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880 |
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881 # Start of ipeercapabilities. |
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882 |
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883 def capable(self, name): |
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884 # The capabilities used internally historically map to capabilities |
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885 # advertised from the "capabilities" wire protocol command. However, |
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886 # version 2 of that command works differently. |
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|
887 |
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888 # Maps to commands that are available. |
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889 if name in ( |
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|
890 b'branchmap', |
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891 b'getbundle', |
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892 b'known', |
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893 b'lookup', |
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|
894 b'pushkey', |
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|
895 ): |
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|
896 return True |
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|
897 |
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|
898 # Other concepts. |
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|
899 if name in (b'bundle2',): |
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|
900 return True |
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|
901 |
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|
902 # Alias command-* to presence of command of that name. |
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903 if name.startswith(b'command-'): |
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904 return name[len(b'command-') :] in self.apidescriptor[b'commands'] |
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|
905 |
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906 return False |
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|
907 |
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|
908 def requirecap(self, name, purpose): |
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909 if self.capable(name): |
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|
910 return |
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|
911 |
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|
912 raise error.CapabilityError( |
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913 _( |
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914 b'cannot %s; client or remote repository does not support the ' |
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|
915 b'\'%s\' capability' |
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916 ) |
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|
917 % (purpose, name) |
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918 ) |
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919 |
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920 # End of ipeercapabilities. |
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921 |
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|
922 def _call(self, name, **args): |
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923 with self.commandexecutor() as e: |
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924 return e.callcommand(name, args).result() |
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|
925 |
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|
926 def commandexecutor(self): |
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927 return httpv2executor( |
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|
928 self.ui, |
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929 self._opener, |
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|
930 self._requestbuilder, |
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|
931 self._apiurl, |
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|
932 self.apidescriptor, |
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933 self._redirect, |
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934 ) |
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935 |
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936 |
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|
937 # Registry of API service names to metadata about peers that handle it. |
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938 # |
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939 # The following keys are meaningful: |
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940 # |
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|
941 # init |
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942 # Callable receiving (ui, repourl, servicepath, opener, requestbuilder, |
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943 # apidescriptor) to create a peer. |
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944 # |
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945 # priority |
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946 # Integer priority for the service. If we could choose from multiple |
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947 # services, we choose the one with the highest priority. |
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948 API_PEERS = { |
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949 wireprototypes.HTTP_WIREPROTO_V2: { |
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950 b'init': httpv2peer, |
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951 b'priority': 50, |
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952 }, |
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953 } |
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954 |
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955 |
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956 def performhandshake(ui, url, opener, requestbuilder): |
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957 # The handshake is a request to the capabilities command. |
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958 |
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959 caps = None |
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960 |
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961 def capable(x): |
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962 raise error.ProgrammingError(b'should not be called') |
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963 |
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964 args = {} |
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965 |
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966 # The client advertises support for newer protocols by adding an |
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967 # X-HgUpgrade-* header with a list of supported APIs and an |
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968 # X-HgProto-* header advertising which serializing formats it supports. |
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969 # We only support the HTTP version 2 transport and CBOR responses for |
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970 # now. |
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971 advertisev2 = ui.configbool(b'experimental', b'httppeer.advertise-v2') |
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972 |
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973 if advertisev2: |
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974 args[b'headers'] = { |
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975 'X-HgProto-1': 'cbor', |
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976 } |
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977 |
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978 args[b'headers'].update( |
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979 encodevalueinheaders( |
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980 b' '.join(sorted(API_PEERS)), |
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981 b'X-HgUpgrade', |
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982 # We don't know the header limit this early. |
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983 # So make it small. |
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984 1024, |
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985 ) |
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986 ) |
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987 |
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988 req, requrl, qs = makev1commandrequest( |
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989 ui, requestbuilder, caps, capable, url, b'capabilities', args |
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990 ) |
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991 resp = sendrequest(ui, opener, req) |
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992 |
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993 # The server may redirect us to the repo root, stripping the |
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994 # ?cmd=capabilities query string from the URL. The server would likely |
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995 # return HTML in this case and ``parsev1commandresponse()`` would raise. |
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996 # We catch this special case and re-issue the capabilities request against |
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997 # the new URL. |
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998 # |
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999 # We should ideally not do this, as a redirect that drops the query |
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1000 # string from the URL is arguably a server bug. (Garbage in, garbage out). |
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1001 # However, Mercurial clients for several years appeared to handle this |
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1002 # issue without behavior degradation. And according to issue 5860, it may |
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1003 # be a longstanding bug in some server implementations. So we allow a |
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1004 # redirect that drops the query string to "just work." |
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1005 try: |
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1006 respurl, ct, resp = parsev1commandresponse( |
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1007 ui, url, requrl, qs, resp, compressible=False, allowcbor=advertisev2 |
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1008 ) |
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1009 except RedirectedRepoError as e: |
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1010 req, requrl, qs = makev1commandrequest( |
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1011 ui, requestbuilder, caps, capable, e.respurl, b'capabilities', args |
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1012 ) |
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1013 resp = sendrequest(ui, opener, req) |
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1014 respurl, ct, resp = parsev1commandresponse( |
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1015 ui, url, requrl, qs, resp, compressible=False, allowcbor=advertisev2 |
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1016 ) |
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1017 |
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1018 try: |
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1019 rawdata = resp.read() |
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1020 finally: |
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1021 resp.close() |
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1022 |
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1023 if not ct.startswith(b'application/mercurial-'): |
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1024 raise error.ProgrammingError(b'unexpected content-type: %s' % ct) |
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1025 |
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1026 if advertisev2: |
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1027 if ct == b'application/mercurial-cbor': |
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1028 try: |
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1029 info = cborutil.decodeall(rawdata)[0] |
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1030 except cborutil.CBORDecodeError: |
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1031 raise error.Abort( |
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1032 _(b'error decoding CBOR from remote server'), |
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1033 hint=_( |
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1034 b'try again and consider contacting ' |
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1035 b'the server operator' |
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1036 ), |
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1037 ) |
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1038 |
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1039 # We got a legacy response. That's fine. |
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1040 elif ct in (b'application/mercurial-0.1', b'application/mercurial-0.2'): |
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1041 info = {b'v1capabilities': set(rawdata.split())} |
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1042 |
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1043 else: |
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1044 raise error.RepoError( |
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1045 _(b'unexpected response type from server: %s') % ct |
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1046 ) |
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1047 else: |
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1048 info = {b'v1capabilities': set(rawdata.split())} |
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1049 |
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1050 return respurl, info |
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1051 |
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1052 |
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1053 def makepeer(ui, path, opener=None, requestbuilder=urlreq.request): |
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1054 """Construct an appropriate HTTP peer instance. |
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1055 |
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1056 ``opener`` is an ``url.opener`` that should be used to establish |
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1057 connections, perform HTTP requests. |
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1058 |
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1059 ``requestbuilder`` is the type used for constructing HTTP requests. |
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1060 It exists as an argument so extensions can override the default. |
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1061 """ |
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1062 u = urlutil.url(path) |
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1063 if u.query or u.fragment: |
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1064 raise error.Abort( |
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1065 _(b'unsupported URL component: "%s"') % (u.query or u.fragment) |
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1066 ) |
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1067 |
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1068 # urllib cannot handle URLs with embedded user or passwd. |
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1069 url, authinfo = u.authinfo() |
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1070 ui.debug(b'using %s\n' % url) |
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1071 |
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1072 opener = opener or urlmod.opener(ui, authinfo) |
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1073 |
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1074 respurl, info = performhandshake(ui, url, opener, requestbuilder) |
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1075 |
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1076 # Given the intersection of APIs that both we and the server support, |
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1077 # sort by their advertised priority and pick the first one. |
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1078 # |
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1079 # TODO consider making this request-based and interface driven. For |
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1080 # example, the caller could say "I want a peer that does X." It's quite |
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1081 # possible that not all peers would do that. Since we know the service |
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1082 # capabilities, we could filter out services not meeting the |
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1083 # requirements. Possibly by consulting the interfaces defined by the |
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1084 # peer type. |
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1085 apipeerchoices = set(info.get(b'apis', {}).keys()) & set(API_PEERS.keys()) |
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1086 |
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1087 preferredchoices = sorted( |
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1088 apipeerchoices, key=lambda x: API_PEERS[x][b'priority'], reverse=True |
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1089 ) |
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1090 |
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1091 for service in preferredchoices: |
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1092 apipath = b'%s/%s' % (info[b'apibase'].rstrip(b'/'), service) |
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1093 |
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1094 return API_PEERS[service][b'init']( |
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1095 ui, respurl, apipath, opener, requestbuilder, info[b'apis'][service] |
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1096 ) |
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1097 |
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1098 # Failed to construct an API peer. Fall back to legacy. |
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1099 return httppeer( |
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1100 ui, path, respurl, opener, requestbuilder, info[b'v1capabilities'] |
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1101 ) |
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1102 |
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1103 |
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1104 def instance(ui, path, create, intents=None, createopts=None): |
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1105 if create: |
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1106 raise error.Abort(_(b'cannot create new http repository')) |
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1108 if path.startswith(b'https:') and not urlmod.has_https: |
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1109 raise error.Abort( |
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1110 _(b'Python support for SSL and HTTPS is not installed') |
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1111 ) |
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1112 |
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1113 inst = makepeer(ui, path) |
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1114 |
7211 | 1115 return inst |
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1116 except error.RepoError as httpexception: |
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1117 try: |
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1118 r = statichttprepo.instance(ui, b"static-" + path, create) |
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1119 ui.note(_(b'(falling back to static-http)\n')) |
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1120 return r |
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1121 except error.RepoError: |
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1122 raise httpexception # use the original http RepoError instead |