Mercurial > hg
annotate mercurial/streamclone.py @ 44712:a825bfbf6642
templatekw: cache mergestate even if merge is not ongoing
While playing with eBPF, I noticed .hg/merge/state{,2} files were tried
to open() for each revision. That's not healthy. Let's cache the "inactive"
state as well.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Wed, 15 Apr 2020 23:11:55 +0900 |
parents | 8ff1ecfadcd1 |
children | a03c177a4679 |
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1 # streamclone.py - producing and consuming streaming repository data |
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2 # |
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3 # Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 import contextlib |
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11 import os |
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12 import struct |
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13 |
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14 from .i18n import _ |
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15 from .pycompat import open |
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16 from .interfaces import repository |
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17 from . import ( |
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18 cacheutil, |
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19 error, |
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20 narrowspec, |
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21 phases, |
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22 pycompat, |
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23 store, |
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24 util, |
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25 ) |
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26 |
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27 |
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28 def canperformstreamclone(pullop, bundle2=False): |
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29 """Whether it is possible to perform a streaming clone as part of pull. |
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30 |
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31 ``bundle2`` will cause the function to consider stream clone through |
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32 bundle2 and only through bundle2. |
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33 |
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34 Returns a tuple of (supported, requirements). ``supported`` is True if |
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35 streaming clone is supported and False otherwise. ``requirements`` is |
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36 a set of repo requirements from the remote, or ``None`` if stream clone |
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37 isn't supported. |
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38 """ |
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39 repo = pullop.repo |
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40 remote = pullop.remote |
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41 |
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42 bundle2supported = False |
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43 if pullop.canusebundle2: |
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44 if b'v2' in pullop.remotebundle2caps.get(b'stream', []): |
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45 bundle2supported = True |
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46 # else |
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47 # Server doesn't support bundle2 stream clone or doesn't support |
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48 # the versions we support. Fall back and possibly allow legacy. |
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49 |
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50 # Ensures legacy code path uses available bundle2. |
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51 if bundle2supported and not bundle2: |
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52 return False, None |
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53 # Ensures bundle2 doesn't try to do a stream clone if it isn't supported. |
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54 elif bundle2 and not bundle2supported: |
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55 return False, None |
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56 |
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57 # Streaming clone only works on empty repositories. |
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58 if len(repo): |
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59 return False, None |
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60 |
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61 # Streaming clone only works if all data is being requested. |
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62 if pullop.heads: |
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63 return False, None |
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64 |
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65 streamrequested = pullop.streamclonerequested |
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66 |
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67 # If we don't have a preference, let the server decide for us. This |
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68 # likely only comes into play in LANs. |
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69 if streamrequested is None: |
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70 # The server can advertise whether to prefer streaming clone. |
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71 streamrequested = remote.capable(b'stream-preferred') |
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72 |
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73 if not streamrequested: |
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74 return False, None |
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75 |
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76 # In order for stream clone to work, the client has to support all the |
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77 # requirements advertised by the server. |
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78 # |
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79 # The server advertises its requirements via the "stream" and "streamreqs" |
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80 # capability. "stream" (a value-less capability) is advertised if and only |
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81 # if the only requirement is "revlogv1." Else, the "streamreqs" capability |
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82 # is advertised and contains a comma-delimited list of requirements. |
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83 requirements = set() |
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84 if remote.capable(b'stream'): |
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85 requirements.add(b'revlogv1') |
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86 else: |
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87 streamreqs = remote.capable(b'streamreqs') |
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88 # This is weird and shouldn't happen with modern servers. |
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89 if not streamreqs: |
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90 pullop.repo.ui.warn( |
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91 _( |
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92 b'warning: stream clone requested but server has them ' |
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93 b'disabled\n' |
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94 ) |
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95 ) |
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96 return False, None |
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97 |
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98 streamreqs = set(streamreqs.split(b',')) |
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99 # Server requires something we don't support. Bail. |
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100 missingreqs = streamreqs - repo.supportedformats |
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101 if missingreqs: |
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102 pullop.repo.ui.warn( |
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103 _( |
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104 b'warning: stream clone requested but client is missing ' |
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105 b'requirements: %s\n' |
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106 ) |
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107 % b', '.join(sorted(missingreqs)) |
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108 ) |
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109 pullop.repo.ui.warn( |
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110 _( |
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111 b'(see https://www.mercurial-scm.org/wiki/MissingRequirement ' |
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112 b'for more information)\n' |
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113 ) |
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114 ) |
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115 return False, None |
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116 requirements = streamreqs |
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117 |
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118 return True, requirements |
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119 |
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120 |
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121 def maybeperformlegacystreamclone(pullop): |
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122 """Possibly perform a legacy stream clone operation. |
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123 |
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124 Legacy stream clones are performed as part of pull but before all other |
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125 operations. |
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126 |
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127 A legacy stream clone will not be performed if a bundle2 stream clone is |
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128 supported. |
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129 """ |
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130 from . import localrepo |
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131 |
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132 supported, requirements = canperformstreamclone(pullop) |
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133 |
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134 if not supported: |
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135 return |
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136 |
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137 repo = pullop.repo |
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138 remote = pullop.remote |
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139 |
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140 # Save remote branchmap. We will use it later to speed up branchcache |
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141 # creation. |
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142 rbranchmap = None |
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143 if remote.capable(b'branchmap'): |
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144 with remote.commandexecutor() as e: |
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145 rbranchmap = e.callcommand(b'branchmap', {}).result() |
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146 |
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147 repo.ui.status(_(b'streaming all changes\n')) |
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148 |
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149 with remote.commandexecutor() as e: |
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150 fp = e.callcommand(b'stream_out', {}).result() |
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151 |
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152 # TODO strictly speaking, this code should all be inside the context |
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153 # manager because the context manager is supposed to ensure all wire state |
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154 # is flushed when exiting. But the legacy peers don't do this, so it |
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155 # doesn't matter. |
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156 l = fp.readline() |
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157 try: |
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158 resp = int(l) |
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159 except ValueError: |
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160 raise error.ResponseError( |
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161 _(b'unexpected response from remote server:'), l |
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162 ) |
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163 if resp == 1: |
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164 raise error.Abort(_(b'operation forbidden by server')) |
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165 elif resp == 2: |
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166 raise error.Abort(_(b'locking the remote repository failed')) |
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167 elif resp != 0: |
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168 raise error.Abort(_(b'the server sent an unknown error code')) |
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169 |
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170 l = fp.readline() |
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171 try: |
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172 filecount, bytecount = map(int, l.split(b' ', 1)) |
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173 except (ValueError, TypeError): |
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174 raise error.ResponseError( |
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175 _(b'unexpected response from remote server:'), l |
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176 ) |
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177 |
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178 with repo.lock(): |
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179 consumev1(repo, fp, filecount, bytecount) |
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180 |
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181 # new requirements = old non-format requirements + |
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182 # new format-related remote requirements |
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183 # requirements from the streamed-in repository |
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184 repo.requirements = requirements | ( |
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185 repo.requirements - repo.supportedformats |
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186 ) |
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187 repo.svfs.options = localrepo.resolvestorevfsoptions( |
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188 repo.ui, repo.requirements, repo.features |
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189 ) |
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190 repo._writerequirements() |
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191 |
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192 if rbranchmap: |
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193 repo._branchcaches.replace(repo, rbranchmap) |
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194 |
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195 repo.invalidate() |
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196 |
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197 |
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198 def allowservergeneration(repo): |
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199 """Whether streaming clones are allowed from the server.""" |
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200 if repository.REPO_FEATURE_STREAM_CLONE not in repo.features: |
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201 return False |
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202 |
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203 if not repo.ui.configbool(b'server', b'uncompressed', untrusted=True): |
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204 return False |
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205 |
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206 # The way stream clone works makes it impossible to hide secret changesets. |
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207 # So don't allow this by default. |
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208 secret = phases.hassecret(repo) |
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209 if secret: |
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210 return repo.ui.configbool(b'server', b'uncompressedallowsecret') |
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211 |
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212 return True |
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213 |
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214 |
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215 # This is it's own function so extensions can override it. |
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216 def _walkstreamfiles(repo, matcher=None): |
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217 return repo.store.walk(matcher) |
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218 |
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219 |
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220 def generatev1(repo): |
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221 """Emit content for version 1 of a streaming clone. |
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222 |
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223 This returns a 3-tuple of (file count, byte size, data iterator). |
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224 |
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225 The data iterator consists of N entries for each file being transferred. |
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226 Each file entry starts as a line with the file name and integer size |
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227 delimited by a null byte. |
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228 |
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229 The raw file data follows. Following the raw file data is the next file |
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230 entry, or EOF. |
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231 |
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232 When used on the wire protocol, an additional line indicating protocol |
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233 success will be prepended to the stream. This function is not responsible |
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234 for adding it. |
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235 |
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236 This function will obtain a repository lock to ensure a consistent view of |
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237 the store is captured. It therefore may raise LockError. |
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238 """ |
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239 entries = [] |
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240 total_bytes = 0 |
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241 # Get consistent snapshot of repo, lock during scan. |
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242 with repo.lock(): |
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243 repo.ui.debug(b'scanning\n') |
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244 for name, ename, size in _walkstreamfiles(repo): |
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245 if size: |
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246 entries.append((name, size)) |
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247 total_bytes += size |
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248 |
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249 repo.ui.debug( |
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250 b'%d files, %d bytes to transfer\n' % (len(entries), total_bytes) |
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251 ) |
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252 |
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253 svfs = repo.svfs |
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254 debugflag = repo.ui.debugflag |
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255 |
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256 def emitrevlogdata(): |
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257 for name, size in entries: |
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258 if debugflag: |
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259 repo.ui.debug(b'sending %s (%d bytes)\n' % (name, size)) |
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260 # partially encode name over the wire for backwards compat |
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261 yield b'%s\0%d\n' % (store.encodedir(name), size) |
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262 # auditing at this stage is both pointless (paths are already |
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263 # trusted by the local repo) and expensive |
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264 with svfs(name, b'rb', auditpath=False) as fp: |
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265 if size <= 65536: |
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266 yield fp.read(size) |
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267 else: |
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268 for chunk in util.filechunkiter(fp, limit=size): |
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269 yield chunk |
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270 |
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271 return len(entries), total_bytes, emitrevlogdata() |
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272 |
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273 |
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274 def generatev1wireproto(repo): |
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275 """Emit content for version 1 of streaming clone suitable for the wire. |
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276 |
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277 This is the data output from ``generatev1()`` with 2 header lines. The |
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278 first line indicates overall success. The 2nd contains the file count and |
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279 byte size of payload. |
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280 |
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281 The success line contains "0" for success, "1" for stream generation not |
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282 allowed, and "2" for error locking the repository (possibly indicating |
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283 a permissions error for the server process). |
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284 """ |
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285 if not allowservergeneration(repo): |
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286 yield b'1\n' |
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287 return |
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288 |
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289 try: |
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290 filecount, bytecount, it = generatev1(repo) |
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291 except error.LockError: |
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292 yield b'2\n' |
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293 return |
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294 |
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295 # Indicates successful response. |
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296 yield b'0\n' |
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297 yield b'%d %d\n' % (filecount, bytecount) |
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298 for chunk in it: |
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299 yield chunk |
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300 |
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301 |
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302 def generatebundlev1(repo, compression=b'UN'): |
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303 """Emit content for version 1 of a stream clone bundle. |
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304 |
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305 The first 4 bytes of the output ("HGS1") denote this as stream clone |
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306 bundle version 1. |
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307 |
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308 The next 2 bytes indicate the compression type. Only "UN" is currently |
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309 supported. |
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310 |
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311 The next 16 bytes are two 64-bit big endian unsigned integers indicating |
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312 file count and byte count, respectively. |
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313 |
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314 The next 2 bytes is a 16-bit big endian unsigned short declaring the length |
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315 of the requirements string, including a trailing \0. The following N bytes |
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316 are the requirements string, which is ASCII containing a comma-delimited |
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317 list of repo requirements that are needed to support the data. |
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318 |
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319 The remaining content is the output of ``generatev1()`` (which may be |
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320 compressed in the future). |
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321 |
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322 Returns a tuple of (requirements, data generator). |
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323 """ |
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324 if compression != b'UN': |
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325 raise ValueError(b'we do not support the compression argument yet') |
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326 |
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327 requirements = repo.requirements & repo.supportedformats |
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328 requires = b','.join(sorted(requirements)) |
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329 |
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330 def gen(): |
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331 yield b'HGS1' |
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332 yield compression |
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333 |
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334 filecount, bytecount, it = generatev1(repo) |
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335 repo.ui.status( |
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336 _(b'writing %d bytes for %d files\n') % (bytecount, filecount) |
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337 ) |
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338 |
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339 yield struct.pack(b'>QQ', filecount, bytecount) |
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340 yield struct.pack(b'>H', len(requires) + 1) |
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341 yield requires + b'\0' |
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342 |
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343 # This is where we'll add compression in the future. |
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344 assert compression == b'UN' |
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345 |
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346 progress = repo.ui.makeprogress( |
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347 _(b'bundle'), total=bytecount, unit=_(b'bytes') |
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348 ) |
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349 progress.update(0) |
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350 |
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351 for chunk in it: |
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352 progress.increment(step=len(chunk)) |
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353 yield chunk |
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354 |
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355 progress.complete() |
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356 |
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357 return requirements, gen() |
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358 |
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359 |
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360 def consumev1(repo, fp, filecount, bytecount): |
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361 """Apply the contents from version 1 of a streaming clone file handle. |
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362 |
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363 This takes the output from "stream_out" and applies it to the specified |
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364 repository. |
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365 |
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366 Like "stream_out," the status line added by the wire protocol is not |
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367 handled by this function. |
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368 """ |
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369 with repo.lock(): |
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370 repo.ui.status( |
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371 _(b'%d files to transfer, %s of data\n') |
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372 % (filecount, util.bytecount(bytecount)) |
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373 ) |
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374 progress = repo.ui.makeprogress( |
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375 _(b'clone'), total=bytecount, unit=_(b'bytes') |
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376 ) |
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377 progress.update(0) |
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378 start = util.timer() |
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379 |
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380 # TODO: get rid of (potential) inconsistency |
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381 # |
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382 # If transaction is started and any @filecache property is |
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383 # changed at this point, it causes inconsistency between |
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384 # in-memory cached property and streamclone-ed file on the |
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385 # disk. Nested transaction prevents transaction scope "clone" |
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386 # below from writing in-memory changes out at the end of it, |
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387 # even though in-memory changes are discarded at the end of it |
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388 # regardless of transaction nesting. |
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389 # |
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390 # But transaction nesting can't be simply prohibited, because |
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391 # nesting occurs also in ordinary case (e.g. enabling |
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392 # clonebundles). |
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393 |
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394 with repo.transaction(b'clone'): |
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395 with repo.svfs.backgroundclosing(repo.ui, expectedcount=filecount): |
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396 for i in pycompat.xrange(filecount): |
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397 # XXX doesn't support '\n' or '\r' in filenames |
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398 l = fp.readline() |
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399 try: |
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400 name, size = l.split(b'\0', 1) |
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401 size = int(size) |
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402 except (ValueError, TypeError): |
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403 raise error.ResponseError( |
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404 _(b'unexpected response from remote server:'), l |
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405 ) |
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406 if repo.ui.debugflag: |
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407 repo.ui.debug( |
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408 b'adding %s (%s)\n' % (name, util.bytecount(size)) |
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409 ) |
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410 # for backwards compat, name was partially encoded |
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411 path = store.decodedir(name) |
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412 with repo.svfs(path, b'w', backgroundclose=True) as ofp: |
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413 for chunk in util.filechunkiter(fp, limit=size): |
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414 progress.increment(step=len(chunk)) |
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415 ofp.write(chunk) |
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416 |
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417 # force @filecache properties to be reloaded from |
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418 # streamclone-ed file at next access |
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419 repo.invalidate(clearfilecache=True) |
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420 |
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421 elapsed = util.timer() - start |
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422 if elapsed <= 0: |
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423 elapsed = 0.001 |
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424 progress.complete() |
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425 repo.ui.status( |
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426 _(b'transferred %s in %.1f seconds (%s/sec)\n') |
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427 % ( |
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428 util.bytecount(bytecount), |
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429 elapsed, |
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430 util.bytecount(bytecount / elapsed), |
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431 ) |
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432 ) |
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433 |
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434 |
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435 def readbundle1header(fp): |
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436 compression = fp.read(2) |
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437 if compression != b'UN': |
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438 raise error.Abort( |
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439 _( |
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440 b'only uncompressed stream clone bundles are ' |
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441 b'supported; got %s' |
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442 ) |
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443 % compression |
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444 ) |
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445 |
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446 filecount, bytecount = struct.unpack(b'>QQ', fp.read(16)) |
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447 requireslen = struct.unpack(b'>H', fp.read(2))[0] |
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448 requires = fp.read(requireslen) |
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449 |
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450 if not requires.endswith(b'\0'): |
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451 raise error.Abort( |
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452 _( |
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453 b'malformed stream clone bundle: ' |
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454 b'requirements not properly encoded' |
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455 ) |
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456 ) |
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457 |
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458 requirements = set(requires.rstrip(b'\0').split(b',')) |
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459 |
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460 return filecount, bytecount, requirements |
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461 |
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462 |
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463 def applybundlev1(repo, fp): |
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464 """Apply the content from a stream clone bundle version 1. |
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465 |
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466 We assume the 4 byte header has been read and validated and the file handle |
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467 is at the 2 byte compression identifier. |
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468 """ |
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469 if len(repo): |
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470 raise error.Abort( |
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471 _(b'cannot apply stream clone bundle on non-empty repo') |
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472 ) |
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473 |
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474 filecount, bytecount, requirements = readbundle1header(fp) |
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475 missingreqs = requirements - repo.supportedformats |
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476 if missingreqs: |
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477 raise error.Abort( |
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478 _(b'unable to apply stream clone: unsupported format: %s') |
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479 % b', '.join(sorted(missingreqs)) |
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480 ) |
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481 |
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482 consumev1(repo, fp, filecount, bytecount) |
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483 |
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484 |
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485 class streamcloneapplier(object): |
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486 """Class to manage applying streaming clone bundles. |
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487 |
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488 We need to wrap ``applybundlev1()`` in a dedicated type to enable bundle |
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489 readers to perform bundle type-specific functionality. |
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490 """ |
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491 |
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492 def __init__(self, fh): |
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493 self._fh = fh |
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494 |
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495 def apply(self, repo): |
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496 return applybundlev1(repo, self._fh) |
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497 |
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498 |
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499 # type of file to stream |
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500 _fileappend = 0 # append only file |
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501 _filefull = 1 # full snapshot file |
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502 |
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503 # Source of the file |
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504 _srcstore = b's' # store (svfs) |
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505 _srccache = b'c' # cache (cache) |
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506 |
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507 # This is it's own function so extensions can override it. |
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508 def _walkstreamfullstorefiles(repo): |
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509 """list snapshot file from the store""" |
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510 fnames = [] |
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511 if not repo.publishing(): |
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512 fnames.append(b'phaseroots') |
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513 return fnames |
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514 |
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515 |
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516 def _filterfull(entry, copy, vfsmap): |
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517 """actually copy the snapshot files""" |
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518 src, name, ftype, data = entry |
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519 if ftype != _filefull: |
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520 return entry |
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521 return (src, name, ftype, copy(vfsmap[src].join(name))) |
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522 |
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523 |
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524 @contextlib.contextmanager |
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525 def maketempcopies(): |
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526 """return a function to temporary copy file""" |
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527 files = [] |
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528 try: |
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529 |
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530 def copy(src): |
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531 fd, dst = pycompat.mkstemp() |
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532 os.close(fd) |
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533 files.append(dst) |
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534 util.copyfiles(src, dst, hardlink=True) |
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535 return dst |
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536 |
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537 yield copy |
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538 finally: |
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539 for tmp in files: |
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540 util.tryunlink(tmp) |
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541 |
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542 |
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543 def _makemap(repo): |
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544 """make a (src -> vfs) map for the repo""" |
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545 vfsmap = { |
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546 _srcstore: repo.svfs, |
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547 _srccache: repo.cachevfs, |
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548 } |
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549 # we keep repo.vfs out of the on purpose, ther are too many danger there |
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550 # (eg: .hg/hgrc) |
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551 assert repo.vfs not in vfsmap.values() |
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552 |
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553 return vfsmap |
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554 |
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555 |
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556 def _emit2(repo, entries, totalfilesize): |
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557 """actually emit the stream bundle""" |
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558 vfsmap = _makemap(repo) |
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559 progress = repo.ui.makeprogress( |
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560 _(b'bundle'), total=totalfilesize, unit=_(b'bytes') |
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561 ) |
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562 progress.update(0) |
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563 with maketempcopies() as copy, progress: |
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564 # copy is delayed until we are in the try |
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565 entries = [_filterfull(e, copy, vfsmap) for e in entries] |
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566 yield None # this release the lock on the repository |
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567 seen = 0 |
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568 |
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569 for src, name, ftype, data in entries: |
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570 vfs = vfsmap[src] |
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571 yield src |
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572 yield util.uvarintencode(len(name)) |
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573 if ftype == _fileappend: |
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574 fp = vfs(name) |
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575 size = data |
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576 elif ftype == _filefull: |
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577 fp = open(data, b'rb') |
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578 size = util.fstat(fp).st_size |
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579 try: |
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580 yield util.uvarintencode(size) |
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581 yield name |
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582 if size <= 65536: |
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583 chunks = (fp.read(size),) |
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584 else: |
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585 chunks = util.filechunkiter(fp, limit=size) |
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586 for chunk in chunks: |
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587 seen += len(chunk) |
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588 progress.update(seen) |
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589 yield chunk |
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590 finally: |
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591 fp.close() |
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592 |
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593 |
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594 def generatev2(repo, includes, excludes, includeobsmarkers): |
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595 """Emit content for version 2 of a streaming clone. |
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596 |
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597 the data stream consists the following entries: |
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598 1) A char representing the file destination (eg: store or cache) |
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599 2) A varint containing the length of the filename |
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600 3) A varint containing the length of file data |
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601 4) N bytes containing the filename (the internal, store-agnostic form) |
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602 5) N bytes containing the file data |
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603 |
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604 Returns a 3-tuple of (file count, file size, data iterator). |
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605 """ |
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606 |
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607 with repo.lock(): |
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608 |
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609 entries = [] |
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610 totalfilesize = 0 |
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611 |
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612 matcher = None |
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613 if includes or excludes: |
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614 matcher = narrowspec.match(repo.root, includes, excludes) |
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615 |
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616 repo.ui.debug(b'scanning\n') |
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617 for name, ename, size in _walkstreamfiles(repo, matcher): |
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618 if size: |
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619 entries.append((_srcstore, name, _fileappend, size)) |
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620 totalfilesize += size |
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621 for name in _walkstreamfullstorefiles(repo): |
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622 if repo.svfs.exists(name): |
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623 totalfilesize += repo.svfs.lstat(name).st_size |
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624 entries.append((_srcstore, name, _filefull, None)) |
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625 if includeobsmarkers and repo.svfs.exists(b'obsstore'): |
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626 totalfilesize += repo.svfs.lstat(b'obsstore').st_size |
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627 entries.append((_srcstore, b'obsstore', _filefull, None)) |
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628 for name in cacheutil.cachetocopy(repo): |
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629 if repo.cachevfs.exists(name): |
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630 totalfilesize += repo.cachevfs.lstat(name).st_size |
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631 entries.append((_srccache, name, _filefull, None)) |
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632 |
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633 chunks = _emit2(repo, entries, totalfilesize) |
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634 first = next(chunks) |
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635 assert first is None |
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636 |
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637 return len(entries), totalfilesize, chunks |
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638 |
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639 |
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640 @contextlib.contextmanager |
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641 def nested(*ctxs): |
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642 this = ctxs[0] |
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643 rest = ctxs[1:] |
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644 with this: |
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645 if rest: |
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646 with nested(*rest): |
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647 yield |
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648 else: |
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649 yield |
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650 |
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651 |
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652 def consumev2(repo, fp, filecount, filesize): |
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653 """Apply the contents from a version 2 streaming clone. |
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654 |
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655 Data is read from an object that only needs to provide a ``read(size)`` |
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656 method. |
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657 """ |
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658 with repo.lock(): |
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659 repo.ui.status( |
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660 _(b'%d files to transfer, %s of data\n') |
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661 % (filecount, util.bytecount(filesize)) |
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662 ) |
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663 |
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664 start = util.timer() |
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665 progress = repo.ui.makeprogress( |
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666 _(b'clone'), total=filesize, unit=_(b'bytes') |
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667 ) |
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668 progress.update(0) |
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669 |
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670 vfsmap = _makemap(repo) |
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671 |
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672 with repo.transaction(b'clone'): |
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673 ctxs = (vfs.backgroundclosing(repo.ui) for vfs in vfsmap.values()) |
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674 with nested(*ctxs): |
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675 for i in range(filecount): |
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676 src = util.readexactly(fp, 1) |
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677 vfs = vfsmap[src] |
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678 namelen = util.uvarintdecodestream(fp) |
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679 datalen = util.uvarintdecodestream(fp) |
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680 |
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681 name = util.readexactly(fp, namelen) |
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682 |
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683 if repo.ui.debugflag: |
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684 repo.ui.debug( |
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685 b'adding [%s] %s (%s)\n' |
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686 % (src, name, util.bytecount(datalen)) |
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687 ) |
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688 |
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689 with vfs(name, b'w') as ofp: |
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690 for chunk in util.filechunkiter(fp, limit=datalen): |
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691 progress.increment(step=len(chunk)) |
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692 ofp.write(chunk) |
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693 |
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694 # force @filecache properties to be reloaded from |
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695 # streamclone-ed file at next access |
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696 repo.invalidate(clearfilecache=True) |
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697 |
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698 elapsed = util.timer() - start |
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699 if elapsed <= 0: |
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700 elapsed = 0.001 |
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701 repo.ui.status( |
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702 _(b'transferred %s in %.1f seconds (%s/sec)\n') |
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703 % ( |
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704 util.bytecount(progress.pos), |
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705 elapsed, |
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706 util.bytecount(progress.pos / elapsed), |
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707 ) |
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708 ) |
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709 progress.complete() |
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710 |
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711 |
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712 def applybundlev2(repo, fp, filecount, filesize, requirements): |
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713 from . import localrepo |
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714 |
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715 missingreqs = [r for r in requirements if r not in repo.supported] |
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716 if missingreqs: |
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717 raise error.Abort( |
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718 _(b'unable to apply stream clone: unsupported format: %s') |
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719 % b', '.join(sorted(missingreqs)) |
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720 ) |
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721 |
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722 consumev2(repo, fp, filecount, filesize) |
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723 |
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724 # new requirements = old non-format requirements + |
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725 # new format-related remote requirements |
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726 # requirements from the streamed-in repository |
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727 repo.requirements = set(requirements) | ( |
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728 repo.requirements - repo.supportedformats |
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729 ) |
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730 repo.svfs.options = localrepo.resolvestorevfsoptions( |
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731 repo.ui, repo.requirements, repo.features |
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732 ) |
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733 repo._writerequirements() |