Mercurial > public > mercurial-scm > hg
annotate mercurial/sshserver.py @ 11585:5d907fbb9703
protocol: unify stream_out command
author | Matt Mackall <mpm@selenic.com> |
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date | Wed, 14 Jul 2010 16:19:27 -0500 |
parents | 1af96b090116 |
children | d054cc5c7737 |
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2399 | 1 # sshserver.py - ssh protocol server support for mercurial |
2396 | 2 # |
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com> |
2859 | 4 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> |
2396 | 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. |
2396 | 8 |
3891 | 9 from i18n import _ |
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10 from node import bin, hex |
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11 import streamclone, util, hook, pushkey, wireproto |
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12 import os, sys, tempfile, urllib, copy |
2396 | 13 |
14 class sshserver(object): | |
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15 |
11369 | 16 caps = 'unbundle lookup changegroupsubset branchmap pushkey'.split() |
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17 |
2396 | 18 def __init__(self, ui, repo): |
19 self.ui = ui | |
20 self.repo = repo | |
21 self.lock = None | |
22 self.fin = sys.stdin | |
23 self.fout = sys.stdout | |
24 | |
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25 hook.redirect(True) |
2396 | 26 sys.stdout = sys.stderr |
27 | |
28 # Prevent insertion/deletion of CRs | |
29 util.set_binary(self.fin) | |
30 util.set_binary(self.fout) | |
31 | |
11579 | 32 def getargs(self, args): |
33 data = {} | |
34 keys = args.split() | |
35 count = len(keys) | |
36 for n in xrange(len(keys)): | |
37 argline = self.fin.readline()[:-1] | |
38 arg, l = argline.split() | |
39 val = self.fin.read(int(l)) | |
40 if arg not in keys: | |
41 raise util.Abort("unexpected parameter %r" % arg) | |
42 if arg == '*': | |
43 star = {} | |
44 for n in xrange(int(l)): | |
45 arg, l = argline.split() | |
46 val = self.fin.read(int(l)) | |
47 star[arg] = val | |
48 data['*'] = star | |
49 else: | |
50 data[arg] = val | |
51 return [data[k] for k in keys] | |
52 | |
53 def getarg(self, name): | |
54 return self.getargs(name)[0] | |
2396 | 55 |
56 def respond(self, v): | |
57 self.fout.write("%d\n" % len(v)) | |
58 self.fout.write(v) | |
59 self.fout.flush() | |
60 | |
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61 def sendchangegroup(self, changegroup): |
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62 while True: |
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63 d = changegroup.read(4096) |
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64 if not d: |
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65 break |
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66 self.fout.write(d) |
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67 |
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68 self.fout.flush() |
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69 |
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70 def sendstream(self, source): |
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71 for chunk in source: |
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72 self.fout.write(chunk) |
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73 self.fout.flush() |
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74 |
2396 | 75 def serve_forever(self): |
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76 try: |
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77 while self.serve_one(): |
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78 pass |
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79 finally: |
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80 if self.lock is not None: |
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81 self.lock.release() |
2396 | 82 sys.exit(0) |
83 | |
84 def serve_one(self): | |
85 cmd = self.fin.readline()[:-1] | |
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86 if cmd and not wireproto.dispatch(self.repo, self, cmd): |
2396 | 87 impl = getattr(self, 'do_' + cmd, None) |
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88 if impl: |
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89 r = impl() |
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90 if r is not None: |
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91 self.respond(r) |
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92 else: self.respond("") |
2396 | 93 return cmd != '' |
94 | |
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95 def do_hello(self): |
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96 '''the hello command returns a set of lines describing various |
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97 interesting things about the server, in an RFC822-like format. |
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98 Currently the only one defined is "capabilities", which |
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99 consists of a line in the form: |
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100 |
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101 capabilities: space separated list of tokens |
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102 ''' |
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103 caps = copy.copy(self.caps) |
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104 if streamclone.allowed(self.repo.ui): |
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105 caps.append('stream=%d' % self.repo.changelog.version) |
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106 return "capabilities: %s\n" % (' '.join(caps),) |
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107 |
2396 | 108 def do_lock(self): |
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109 '''DEPRECATED - allowing remote client to lock repo is not safe''' |
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110 |
2396 | 111 self.lock = self.repo.lock() |
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112 return "" |
2396 | 113 |
114 def do_unlock(self): | |
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115 '''DEPRECATED''' |
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116 |
2396 | 117 if self.lock: |
118 self.lock.release() | |
119 self.lock = None | |
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120 return "" |
2396 | 121 |
122 def do_addchangegroup(self): | |
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123 '''DEPRECATED''' |
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124 |
2396 | 125 if not self.lock: |
126 self.respond("not locked") | |
127 return | |
128 | |
129 self.respond("") | |
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130 r = self.repo.addchangegroup(self.fin, 'serve', self.client_url(), |
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131 lock=self.lock) |
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132 return str(r) |
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133 |
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134 def client_url(self): |
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135 client = os.environ.get('SSH_CLIENT', '').split(' ', 1)[0] |
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136 return 'remote:ssh:' + client |
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137 |
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138 def do_unbundle(self): |
11579 | 139 their_heads = self.getarg('heads').split() |
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140 |
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141 def check_heads(): |
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142 heads = map(hex, self.repo.heads()) |
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143 return their_heads == [hex('force')] or their_heads == heads |
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144 |
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145 # fail early if possible |
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146 if not check_heads(): |
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147 self.respond(_('unsynced changes')) |
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148 return |
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149 |
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150 self.respond('') |
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151 |
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152 # write bundle data to temporary file because it can be big |
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153 fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-') |
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154 fp = os.fdopen(fd, 'wb+') |
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155 try: |
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156 count = int(self.fin.readline()) |
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157 while count: |
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158 fp.write(self.fin.read(count)) |
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159 count = int(self.fin.readline()) |
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160 |
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161 was_locked = self.lock is not None |
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162 if not was_locked: |
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163 self.lock = self.repo.lock() |
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164 try: |
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165 if not check_heads(): |
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166 # someone else committed/pushed/unbundled while we |
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167 # were transferring data |
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168 self.respond(_('unsynced changes')) |
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169 return |
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170 self.respond('') |
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171 |
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172 # push can proceed |
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173 |
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174 fp.seek(0) |
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175 r = self.repo.addchangegroup(fp, 'serve', self.client_url(), |
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176 lock=self.lock) |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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177 self.respond(str(r)) |
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Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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178 finally: |
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extend network protocol to stop clients from locking servers
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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179 if not was_locked: |
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extend network protocol to stop clients from locking servers
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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180 self.lock.release() |
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extend network protocol to stop clients from locking servers
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
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181 self.lock = None |
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extend network protocol to stop clients from locking servers
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
2419
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182 finally: |
9742
0c84afa1d622
sshrepo: move mkstemp() out of the try block, we don't use the exception
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9713
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183 fp.close() |
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sshrepo: move mkstemp() out of the try block, we don't use the exception
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents:
9713
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184 os.unlink(tempname) |