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@@ -1,188 +1,194 b'' | |||||
1 | # repoview.py - Filtered view of a localrepo object |
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1 | # repoview.py - Filtered view of a localrepo object | |
2 | # |
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2 | # | |
3 | # Copyright 2012 Pierre-Yves David <pierre-yves.david@ens-lyon.org> |
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3 | # Copyright 2012 Pierre-Yves David <pierre-yves.david@ens-lyon.org> | |
4 | # Logilab SA <contact@logilab.fr> |
|
4 | # Logilab SA <contact@logilab.fr> | |
5 | # |
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5 | # | |
6 | # This software may be used and distributed according to the terms of the |
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6 | # This software may be used and distributed according to the terms of the | |
7 | # GNU General Public License version 2 or any later version. |
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7 | # GNU General Public License version 2 or any later version. | |
8 |
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8 | |||
9 | import copy |
|
9 | import copy | |
10 | import phases |
|
10 | import phases | |
11 | import util |
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11 | import util | |
12 | import obsolete, bookmarks, revset |
|
12 | import obsolete, bookmarks, revset | |
13 |
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13 | |||
14 |
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14 | |||
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15 | def hideablerevs(repo): | |||
|
16 | """Revisions candidates to be hidden | |||
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17 | ||||
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18 | This is a standalone function to help extensions to wrap it.""" | |||
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19 | return obsolete.getrevs(repo, 'obsolete') | |||
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20 | ||||
15 | def computehidden(repo): |
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21 | def computehidden(repo): | |
16 | """compute the set of hidden revision to filter |
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22 | """compute the set of hidden revision to filter | |
17 |
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23 | |||
18 | During most operation hidden should be filtered.""" |
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24 | During most operation hidden should be filtered.""" | |
19 | assert not repo.changelog.filteredrevs |
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25 | assert not repo.changelog.filteredrevs | |
20 |
hideable = |
|
26 | hideable = hideablerevs(repo) | |
21 | if hideable: |
|
27 | if hideable: | |
22 | cl = repo.changelog |
|
28 | cl = repo.changelog | |
23 | firsthideable = min(hideable) |
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29 | firsthideable = min(hideable) | |
24 | revs = cl.revs(start=firsthideable) |
|
30 | revs = cl.revs(start=firsthideable) | |
25 | blockers = [r for r in revset._children(repo, revs, hideable) |
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31 | blockers = [r for r in revset._children(repo, revs, hideable) | |
26 | if r not in hideable] |
|
32 | if r not in hideable] | |
27 | for par in repo[None].parents(): |
|
33 | for par in repo[None].parents(): | |
28 | blockers.append(par.rev()) |
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34 | blockers.append(par.rev()) | |
29 | for bm in bookmarks.listbookmarks(repo).values(): |
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35 | for bm in bookmarks.listbookmarks(repo).values(): | |
30 | blockers.append(repo[bm].rev()) |
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36 | blockers.append(repo[bm].rev()) | |
31 | blocked = cl.ancestors(blockers, inclusive=True) |
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37 | blocked = cl.ancestors(blockers, inclusive=True) | |
32 | return frozenset(r for r in hideable if r not in blocked) |
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38 | return frozenset(r for r in hideable if r not in blocked) | |
33 | return frozenset() |
|
39 | return frozenset() | |
34 |
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40 | |||
35 | def computeunserved(repo): |
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41 | def computeunserved(repo): | |
36 | """compute the set of revision that should be filtered when used a server |
|
42 | """compute the set of revision that should be filtered when used a server | |
37 |
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43 | |||
38 | Secret and hidden changeset should not pretend to be here.""" |
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44 | Secret and hidden changeset should not pretend to be here.""" | |
39 | assert not repo.changelog.filteredrevs |
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45 | assert not repo.changelog.filteredrevs | |
40 | # fast path in simple case to avoid impact of non optimised code |
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46 | # fast path in simple case to avoid impact of non optimised code | |
41 | hiddens = filteredrevs(repo, 'hidden') |
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47 | hiddens = filteredrevs(repo, 'hidden') | |
42 | if phases.hassecret(repo): |
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48 | if phases.hassecret(repo): | |
43 | cl = repo.changelog |
|
49 | cl = repo.changelog | |
44 | secret = phases.secret |
|
50 | secret = phases.secret | |
45 | getphase = repo._phasecache.phase |
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51 | getphase = repo._phasecache.phase | |
46 | first = min(cl.rev(n) for n in repo._phasecache.phaseroots[secret]) |
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52 | first = min(cl.rev(n) for n in repo._phasecache.phaseroots[secret]) | |
47 | revs = cl.revs(start=first) |
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53 | revs = cl.revs(start=first) | |
48 | secrets = set(r for r in revs if getphase(repo, r) >= secret) |
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54 | secrets = set(r for r in revs if getphase(repo, r) >= secret) | |
49 | return frozenset(hiddens | secrets) |
|
55 | return frozenset(hiddens | secrets) | |
50 | else: |
|
56 | else: | |
51 | return hiddens |
|
57 | return hiddens | |
52 | return frozenset() |
|
58 | return frozenset() | |
53 |
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59 | |||
54 | def computemutable(repo): |
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60 | def computemutable(repo): | |
55 | """compute the set of revision that should be filtered when used a server |
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61 | """compute the set of revision that should be filtered when used a server | |
56 |
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62 | |||
57 | Secret and hidden changeset should not pretend to be here.""" |
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63 | Secret and hidden changeset should not pretend to be here.""" | |
58 | assert not repo.changelog.filteredrevs |
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64 | assert not repo.changelog.filteredrevs | |
59 | # fast check to avoid revset call on huge repo |
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65 | # fast check to avoid revset call on huge repo | |
60 | if util.any(repo._phasecache.phaseroots[1:]): |
|
66 | if util.any(repo._phasecache.phaseroots[1:]): | |
61 | getphase = repo._phasecache.phase |
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67 | getphase = repo._phasecache.phase | |
62 | maymutable = filteredrevs(repo, 'impactable') |
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68 | maymutable = filteredrevs(repo, 'impactable') | |
63 | return frozenset(r for r in maymutable if getphase(repo, r)) |
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69 | return frozenset(r for r in maymutable if getphase(repo, r)) | |
64 | return frozenset() |
|
70 | return frozenset() | |
65 |
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71 | |||
66 | def computeimpactable(repo): |
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72 | def computeimpactable(repo): | |
67 | """Everything impactable by mutable revision |
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73 | """Everything impactable by mutable revision | |
68 |
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74 | |||
69 | The mutable filter still have some chance to get invalidated. This will |
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75 | The mutable filter still have some chance to get invalidated. This will | |
70 | happen when: |
|
76 | happen when: | |
71 |
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77 | |||
72 | - you garbage collect hidden changeset, |
|
78 | - you garbage collect hidden changeset, | |
73 | - public phase is moved backward, |
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79 | - public phase is moved backward, | |
74 | - something is changed in the filtering (this could be fixed) |
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80 | - something is changed in the filtering (this could be fixed) | |
75 |
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81 | |||
76 | This filter out any mutable changeset and any public changeset that may be |
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82 | This filter out any mutable changeset and any public changeset that may be | |
77 | impacted by something happening to a mutable revision. |
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83 | impacted by something happening to a mutable revision. | |
78 |
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84 | |||
79 | This is achieved by filtered everything with a revision number egal or |
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85 | This is achieved by filtered everything with a revision number egal or | |
80 | higher than the first mutable changeset is filtered.""" |
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86 | higher than the first mutable changeset is filtered.""" | |
81 | assert not repo.changelog.filteredrevs |
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87 | assert not repo.changelog.filteredrevs | |
82 | cl = repo.changelog |
|
88 | cl = repo.changelog | |
83 | firstmutable = len(cl) |
|
89 | firstmutable = len(cl) | |
84 | for roots in repo._phasecache.phaseroots[1:]: |
|
90 | for roots in repo._phasecache.phaseroots[1:]: | |
85 | if roots: |
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91 | if roots: | |
86 | firstmutable = min(firstmutable, min(cl.rev(r) for r in roots)) |
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92 | firstmutable = min(firstmutable, min(cl.rev(r) for r in roots)) | |
87 | return frozenset(xrange(firstmutable, len(cl))) |
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93 | return frozenset(xrange(firstmutable, len(cl))) | |
88 |
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94 | |||
89 | # function to compute filtered set |
|
95 | # function to compute filtered set | |
90 | filtertable = {'hidden': computehidden, |
|
96 | filtertable = {'hidden': computehidden, | |
91 | 'unserved': computeunserved, |
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97 | 'unserved': computeunserved, | |
92 | 'mutable': computemutable, |
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98 | 'mutable': computemutable, | |
93 | 'impactable': computeimpactable} |
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99 | 'impactable': computeimpactable} | |
94 | ### Nearest subset relation |
|
100 | ### Nearest subset relation | |
95 | # Nearest subset of filter X is a filter Y so that: |
|
101 | # Nearest subset of filter X is a filter Y so that: | |
96 | # * Y is included in X, |
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102 | # * Y is included in X, | |
97 | # * X - Y is as small as possible. |
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103 | # * X - Y is as small as possible. | |
98 | # This create and ordering used for branchmap purpose. |
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104 | # This create and ordering used for branchmap purpose. | |
99 | # the ordering may be partial |
|
105 | # the ordering may be partial | |
100 | subsettable = {None: 'hidden', |
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106 | subsettable = {None: 'hidden', | |
101 | 'hidden': 'unserved', |
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107 | 'hidden': 'unserved', | |
102 | 'unserved': 'mutable', |
|
108 | 'unserved': 'mutable', | |
103 | 'mutable': 'impactable'} |
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109 | 'mutable': 'impactable'} | |
104 |
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110 | |||
105 | def filteredrevs(repo, filtername): |
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111 | def filteredrevs(repo, filtername): | |
106 | """returns set of filtered revision for this filter name""" |
|
112 | """returns set of filtered revision for this filter name""" | |
107 | if filtername not in repo.filteredrevcache: |
|
113 | if filtername not in repo.filteredrevcache: | |
108 | func = filtertable[filtername] |
|
114 | func = filtertable[filtername] | |
109 | repo.filteredrevcache[filtername] = func(repo.unfiltered()) |
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115 | repo.filteredrevcache[filtername] = func(repo.unfiltered()) | |
110 | return repo.filteredrevcache[filtername] |
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116 | return repo.filteredrevcache[filtername] | |
111 |
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117 | |||
112 | class repoview(object): |
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118 | class repoview(object): | |
113 | """Provide a read/write view of a repo through a filtered changelog |
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119 | """Provide a read/write view of a repo through a filtered changelog | |
114 |
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120 | |||
115 | This object is used to access a filtered version of a repository without |
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121 | This object is used to access a filtered version of a repository without | |
116 | altering the original repository object itself. We can not alter the |
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122 | altering the original repository object itself. We can not alter the | |
117 | original object for two main reasons: |
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123 | original object for two main reasons: | |
118 | - It prevents the use of a repo with multiple filters at the same time. In |
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124 | - It prevents the use of a repo with multiple filters at the same time. In | |
119 | particular when multiple threads are involved. |
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125 | particular when multiple threads are involved. | |
120 | - It makes scope of the filtering harder to control. |
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126 | - It makes scope of the filtering harder to control. | |
121 |
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127 | |||
122 | This object behaves very closely to the original repository. All attribute |
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128 | This object behaves very closely to the original repository. All attribute | |
123 | operations are done on the original repository: |
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129 | operations are done on the original repository: | |
124 | - An access to `repoview.someattr` actually returns `repo.someattr`, |
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130 | - An access to `repoview.someattr` actually returns `repo.someattr`, | |
125 | - A write to `repoview.someattr` actually sets value of `repo.someattr`, |
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131 | - A write to `repoview.someattr` actually sets value of `repo.someattr`, | |
126 | - A deletion of `repoview.someattr` actually drops `someattr` |
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132 | - A deletion of `repoview.someattr` actually drops `someattr` | |
127 | from `repo.__dict__`. |
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133 | from `repo.__dict__`. | |
128 |
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134 | |||
129 | The only exception is the `changelog` property. It is overridden to return |
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135 | The only exception is the `changelog` property. It is overridden to return | |
130 | a (surface) copy of `repo.changelog` with some revisions filtered. The |
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136 | a (surface) copy of `repo.changelog` with some revisions filtered. The | |
131 | `filtername` attribute of the view control the revisions that need to be |
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137 | `filtername` attribute of the view control the revisions that need to be | |
132 | filtered. (the fact the changelog is copied is an implementation detail). |
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138 | filtered. (the fact the changelog is copied is an implementation detail). | |
133 |
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139 | |||
134 | Unlike attributes, this object intercepts all method calls. This means that |
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140 | Unlike attributes, this object intercepts all method calls. This means that | |
135 | all methods are run on the `repoview` object with the filtered `changelog` |
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141 | all methods are run on the `repoview` object with the filtered `changelog` | |
136 | property. For this purpose the simple `repoview` class must be mixed with |
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142 | property. For this purpose the simple `repoview` class must be mixed with | |
137 | the actual class of the repository. This ensures that the resulting |
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143 | the actual class of the repository. This ensures that the resulting | |
138 | `repoview` object have the very same methods than the repo object. This |
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144 | `repoview` object have the very same methods than the repo object. This | |
139 | leads to the property below. |
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145 | leads to the property below. | |
140 |
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146 | |||
141 | repoview.method() --> repo.__class__.method(repoview) |
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147 | repoview.method() --> repo.__class__.method(repoview) | |
142 |
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148 | |||
143 | The inheritance has to be done dynamically because `repo` can be of any |
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149 | The inheritance has to be done dynamically because `repo` can be of any | |
144 | subclasses of `localrepo`. Eg: `bundlerepo` or `httprepo`. |
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150 | subclasses of `localrepo`. Eg: `bundlerepo` or `httprepo`. | |
145 | """ |
|
151 | """ | |
146 |
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152 | |||
147 | def __init__(self, repo, filtername): |
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153 | def __init__(self, repo, filtername): | |
148 | object.__setattr__(self, '_unfilteredrepo', repo) |
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154 | object.__setattr__(self, '_unfilteredrepo', repo) | |
149 | object.__setattr__(self, 'filtername', filtername) |
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155 | object.__setattr__(self, 'filtername', filtername) | |
150 |
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156 | |||
151 | # not a cacheproperty on purpose we shall implement a proper cache later |
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157 | # not a cacheproperty on purpose we shall implement a proper cache later | |
152 | @property |
|
158 | @property | |
153 | def changelog(self): |
|
159 | def changelog(self): | |
154 | """return a filtered version of the changeset |
|
160 | """return a filtered version of the changeset | |
155 |
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161 | |||
156 | this changelog must not be used for writing""" |
|
162 | this changelog must not be used for writing""" | |
157 | # some cache may be implemented later |
|
163 | # some cache may be implemented later | |
158 | cl = copy.copy(self._unfilteredrepo.changelog) |
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164 | cl = copy.copy(self._unfilteredrepo.changelog) | |
159 | cl.filteredrevs = filteredrevs(self._unfilteredrepo, self.filtername) |
|
165 | cl.filteredrevs = filteredrevs(self._unfilteredrepo, self.filtername) | |
160 | return cl |
|
166 | return cl | |
161 |
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167 | |||
162 | def unfiltered(self): |
|
168 | def unfiltered(self): | |
163 | """Return an unfiltered version of a repo""" |
|
169 | """Return an unfiltered version of a repo""" | |
164 | return self._unfilteredrepo |
|
170 | return self._unfilteredrepo | |
165 |
|
171 | |||
166 | def filtered(self, name): |
|
172 | def filtered(self, name): | |
167 | """Return a filtered version of a repository""" |
|
173 | """Return a filtered version of a repository""" | |
168 | if name == self.filtername: |
|
174 | if name == self.filtername: | |
169 | return self |
|
175 | return self | |
170 | return self.unfiltered().filtered(name) |
|
176 | return self.unfiltered().filtered(name) | |
171 |
|
177 | |||
172 | # everything access are forwarded to the proxied repo |
|
178 | # everything access are forwarded to the proxied repo | |
173 | def __getattr__(self, attr): |
|
179 | def __getattr__(self, attr): | |
174 | return getattr(self._unfilteredrepo, attr) |
|
180 | return getattr(self._unfilteredrepo, attr) | |
175 |
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181 | |||
176 | def __setattr__(self, attr, value): |
|
182 | def __setattr__(self, attr, value): | |
177 | return setattr(self._unfilteredrepo, attr, value) |
|
183 | return setattr(self._unfilteredrepo, attr, value) | |
178 |
|
184 | |||
179 | def __delattr__(self, attr): |
|
185 | def __delattr__(self, attr): | |
180 | return delattr(self._unfilteredrepo, attr) |
|
186 | return delattr(self._unfilteredrepo, attr) | |
181 |
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187 | |||
182 | # The `requirement` attribut is initialiazed during __init__. But |
|
188 | # The `requirement` attribut is initialiazed during __init__. But | |
183 | # __getattr__ won't be called as it also exists on the class. We need |
|
189 | # __getattr__ won't be called as it also exists on the class. We need | |
184 | # explicit forwarding to main repo here |
|
190 | # explicit forwarding to main repo here | |
185 | @property |
|
191 | @property | |
186 | def requirements(self): |
|
192 | def requirements(self): | |
187 | return self._unfilteredrepo.requirements |
|
193 | return self._unfilteredrepo.requirements | |
188 |
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194 |
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