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1 | 1 | # Copyright 2010-2011 Fog Creek Software |
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2 | 2 | # Copyright 2010-2011 Unity Technologies |
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3 | 3 | # |
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4 | 4 | # This software may be used and distributed according to the terms of the |
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5 | 5 | # GNU General Public License version 2 or any later version. |
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6 | 6 | |
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7 | 7 | '''remote largefile store; the base class for wirestore''' |
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8 | 8 | |
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9 | 9 | import urllib2 |
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10 | 10 | |
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11 | 11 | from mercurial import util, wireproto, error |
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12 | 12 | from mercurial.i18n import _ |
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13 | 13 | |
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14 | 14 | import lfutil |
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15 | 15 | import basestore |
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16 | 16 | |
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17 | 17 | class remotestore(basestore.basestore): |
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18 | 18 | '''a largefile store accessed over a network''' |
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19 | 19 | def __init__(self, ui, repo, url): |
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20 | 20 | super(remotestore, self).__init__(ui, repo, url) |
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21 | 21 | |
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22 | 22 | def put(self, source, hash): |
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23 | 23 | if self.sendfile(source, hash): |
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24 | 24 | raise error.Abort( |
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25 | 25 | _('remotestore: could not put %s to remote store %s') |
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26 | 26 | % (source, util.hidepassword(self.url))) |
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27 | 27 | self.ui.debug( |
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28 | 28 | _('remotestore: put %s to remote store %s\n') |
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29 | 29 | % (source, util.hidepassword(self.url))) |
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30 | 30 | |
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31 | 31 | def exists(self, hashes): |
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32 | 32 | return dict((h, s == 0) for (h, s) in # dict-from-generator |
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33 | 33 | self._stat(hashes).iteritems()) |
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34 | 34 | |
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35 | 35 | def sendfile(self, filename, hash): |
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36 | 36 | self.ui.debug('remotestore: sendfile(%s, %s)\n' % (filename, hash)) |
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37 | 37 | fd = None |
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38 | 38 | try: |
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39 | 39 | fd = lfutil.httpsendfile(self.ui, filename) |
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40 | 40 | return self._put(hash, fd) |
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41 | 41 | except IOError as e: |
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42 | 42 | raise error.Abort( |
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43 | 43 | _('remotestore: could not open file %s: %s') |
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44 | 44 | % (filename, str(e))) |
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45 | 45 | finally: |
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46 | 46 | if fd: |
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47 | 47 | fd.close() |
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48 | 48 | |
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49 | 49 | def _getfile(self, tmpfile, filename, hash): |
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50 | 50 | try: |
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51 | 51 | chunks = self._get(hash) |
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52 | 52 | except urllib2.HTTPError as e: |
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53 | 53 | # 401s get converted to error.Aborts; everything else is fine being |
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54 | 54 | # turned into a StoreError |
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55 | 55 | raise basestore.StoreError(filename, hash, self.url, str(e)) |
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56 | 56 | except urllib2.URLError as e: |
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57 | 57 | # This usually indicates a connection problem, so don't |
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58 | 58 | # keep trying with the other files... they will probably |
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59 | 59 | # all fail too. |
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60 | 60 | raise error.Abort('%s: %s' % |
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61 | 61 | (util.hidepassword(self.url), e.reason)) |
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62 | 62 | except IOError as e: |
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63 | 63 | raise basestore.StoreError(filename, hash, self.url, str(e)) |
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64 | 64 | |
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65 | 65 | return lfutil.copyandhash(chunks, tmpfile) |
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66 | 66 | |
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67 | 67 | def _verifyfile(self, cctx, cset, contents, standin, verified): |
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68 | 68 | filename = lfutil.splitstandin(standin) |
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69 | 69 | if not filename: |
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70 | 70 | return False |
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71 | 71 | fctx = cctx[standin] |
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72 | 72 | key = (filename, fctx.filenode()) |
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73 | 73 | if key in verified: |
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74 | 74 | return False |
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75 | 75 | |
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76 | 76 | verified.add(key) |
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77 | 77 | |
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78 | 78 | expecthash = fctx.data()[0:40] |
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79 | 79 | stat = self._stat([expecthash])[expecthash] |
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80 | 80 | if not stat: |
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81 | 81 | return False |
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82 | 82 | elif stat == 1: |
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83 | 83 | self.ui.warn( |
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84 | 84 | _('changeset %s: %s: contents differ\n') |
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85 | 85 | % (cset, filename)) |
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86 | 86 | return True # failed |
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87 | 87 | elif stat == 2: |
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88 | 88 | self.ui.warn( |
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89 | 89 | _('changeset %s: %s missing\n') |
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90 | 90 | % (cset, filename)) |
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91 | 91 | return True # failed |
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92 | 92 | else: |
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93 | 93 | raise RuntimeError('verify failed: unexpected response from ' |
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94 | 94 | 'statlfile (%r)' % stat) |
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95 | 95 | |
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96 | 96 | def batch(self): |
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97 | 97 | '''Support for remote batching.''' |
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98 | 98 | return wireproto.remotebatch(self) |
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99 | ||
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100 | def _put(self, hash, fd): | |
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101 | '''Put file with the given hash in the remote store.''' | |
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102 | raise NotImplementedError('abstract method') | |
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103 | ||
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104 | def _get(self, hash): | |
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105 | '''Get file with the given hash from the remote store.''' | |
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106 | raise NotImplementedError('abstract method') | |
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107 | ||
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108 | def _stat(self, hashes): | |
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109 | '''Get information about availability of files specified by | |
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110 | hashes in the remote store. Return dictionary mapping hashes | |
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111 | to return code where 0 means that file is available, other | |
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112 | values if not.''' | |
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113 | raise NotImplementedError('abstract method') |
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