Mercurial > hg
annotate hgext/remotefilelog/metadatastore.py @ 43117:8ff1ecfadcd1
cleanup: join string literals that are already on one line
Thanks to Kyle for noticing this and for providing the regular
expression to run on the codebase.
This patch has been reviewed by the test suite and they approved of
it.
# skip-blame: fallout from mass reformatting
Differential Revision: https://phab.mercurial-scm.org/D7028
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Tue, 08 Oct 2019 15:06:18 -0700 |
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children | 9f70512ae2cf |
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1 from __future__ import absolute_import |
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2 |
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3 from mercurial.node import hex, nullid |
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4 from . import ( |
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5 basestore, |
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6 shallowutil, |
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7 ) |
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8 |
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9 |
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10 class unionmetadatastore(basestore.baseunionstore): |
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11 def __init__(self, *args, **kwargs): |
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12 super(unionmetadatastore, self).__init__(*args, **kwargs) |
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13 |
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14 self.stores = args |
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15 self.writestore = kwargs.get(r'writestore') |
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16 |
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17 # If allowincomplete==True then the union store can return partial |
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18 # ancestor lists, otherwise it will throw a KeyError if a full |
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19 # history can't be found. |
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20 self.allowincomplete = kwargs.get(r'allowincomplete', False) |
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21 |
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22 def getancestors(self, name, node, known=None): |
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23 """Returns as many ancestors as we're aware of. |
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24 |
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25 return value: { |
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26 node: (p1, p2, linknode, copyfrom), |
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27 ... |
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28 } |
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29 """ |
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30 if known is None: |
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31 known = set() |
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32 if node in known: |
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33 return [] |
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34 |
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35 ancestors = {} |
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36 |
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37 def traverse(curname, curnode): |
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38 # TODO: this algorithm has the potential to traverse parts of |
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39 # history twice. Ex: with A->B->C->F and A->B->D->F, both D and C |
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40 # may be queued as missing, then B and A are traversed for both. |
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41 queue = [(curname, curnode)] |
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42 missing = [] |
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43 seen = set() |
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44 while queue: |
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45 name, node = queue.pop() |
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46 if (name, node) in seen: |
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47 continue |
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48 seen.add((name, node)) |
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49 value = ancestors.get(node) |
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50 if not value: |
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51 missing.append((name, node)) |
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52 continue |
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53 p1, p2, linknode, copyfrom = value |
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54 if p1 != nullid and p1 not in known: |
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55 queue.append((copyfrom or curname, p1)) |
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56 if p2 != nullid and p2 not in known: |
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57 queue.append((curname, p2)) |
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58 return missing |
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59 |
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60 missing = [(name, node)] |
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61 while missing: |
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62 curname, curnode = missing.pop() |
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63 try: |
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64 ancestors.update( |
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65 self._getpartialancestors(curname, curnode, known=known) |
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66 ) |
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67 newmissing = traverse(curname, curnode) |
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68 missing.extend(newmissing) |
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69 except KeyError: |
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70 # If we allow incomplete histories, don't throw. |
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71 if not self.allowincomplete: |
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72 raise |
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73 # If the requested name+node doesn't exist, always throw. |
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74 if (curname, curnode) == (name, node): |
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75 raise |
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76 |
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77 # TODO: ancestors should probably be (name, node) -> (value) |
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78 return ancestors |
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79 |
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80 @basestore.baseunionstore.retriable |
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81 def _getpartialancestors(self, name, node, known=None): |
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82 for store in self.stores: |
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83 try: |
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84 return store.getancestors(name, node, known=known) |
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85 except KeyError: |
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86 pass |
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87 |
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88 raise KeyError((name, hex(node))) |
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89 |
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90 @basestore.baseunionstore.retriable |
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91 def getnodeinfo(self, name, node): |
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92 for store in self.stores: |
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93 try: |
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94 return store.getnodeinfo(name, node) |
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95 except KeyError: |
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96 pass |
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97 |
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98 raise KeyError((name, hex(node))) |
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99 |
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100 def add(self, name, node, data): |
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101 raise RuntimeError( |
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102 b"cannot add content only to remotefilelog contentstore" |
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103 ) |
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104 |
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105 def getmissing(self, keys): |
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106 missing = keys |
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107 for store in self.stores: |
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108 if missing: |
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109 missing = store.getmissing(missing) |
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110 return missing |
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111 |
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112 def markledger(self, ledger, options=None): |
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113 for store in self.stores: |
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114 store.markledger(ledger, options) |
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115 |
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116 def getmetrics(self): |
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117 metrics = [s.getmetrics() for s in self.stores] |
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118 return shallowutil.sumdicts(*metrics) |
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119 |
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120 |
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121 class remotefilelogmetadatastore(basestore.basestore): |
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122 def getancestors(self, name, node, known=None): |
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123 """Returns as many ancestors as we're aware of. |
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124 |
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125 return value: { |
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126 node: (p1, p2, linknode, copyfrom), |
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127 ... |
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128 } |
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129 """ |
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130 data = self._getdata(name, node) |
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131 ancestors = shallowutil.ancestormap(data) |
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132 return ancestors |
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133 |
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134 def getnodeinfo(self, name, node): |
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135 return self.getancestors(name, node)[node] |
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136 |
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137 def add(self, name, node, parents, linknode): |
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138 raise RuntimeError( |
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139 b"cannot add metadata only to remotefilelog metadatastore" |
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140 ) |
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141 |
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142 |
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143 class remotemetadatastore(object): |
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144 def __init__(self, ui, fileservice, shared): |
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145 self._fileservice = fileservice |
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146 self._shared = shared |
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147 |
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148 def getancestors(self, name, node, known=None): |
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149 self._fileservice.prefetch( |
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150 [(name, hex(node))], force=True, fetchdata=False, fetchhistory=True |
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151 ) |
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152 return self._shared.getancestors(name, node, known=known) |
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153 |
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154 def getnodeinfo(self, name, node): |
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155 return self.getancestors(name, node)[node] |
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156 |
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157 def add(self, name, node, data): |
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158 raise RuntimeError(b"cannot add to a remote store") |
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159 |
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160 def getmissing(self, keys): |
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161 return keys |
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162 |
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163 def markledger(self, ledger, options=None): |
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164 pass |