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1 | # upgrade.py - functions for in place upgrade of Mercurial repository |
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1 | # upgrade.py - functions for in place upgrade of Mercurial repository | |
2 | # |
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2 | # | |
3 | # Copyright (c) 2016-present, Gregory Szorc |
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3 | # Copyright (c) 2016-present, Gregory Szorc | |
4 | # |
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4 | # | |
5 | # This software may be used and distributed according to the terms of the |
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5 | # This software may be used and distributed according to the terms of the | |
6 | # GNU General Public License version 2 or any later version. |
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6 | # GNU General Public License version 2 or any later version. | |
7 |
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7 | |||
8 | from __future__ import absolute_import |
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8 | from __future__ import absolute_import | |
9 |
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9 | |||
10 | from ..i18n import _ |
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10 | from ..i18n import _ | |
11 | from .. import ( |
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11 | from .. import ( | |
12 | error, |
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12 | error, | |
13 | localrepo, |
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13 | localrepo, | |
14 | requirements, |
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14 | requirements, | |
15 | util, |
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15 | util, | |
16 | ) |
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16 | ) | |
17 |
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17 | |||
18 | from ..utils import compression |
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18 | from ..utils import compression | |
19 |
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19 | |||
20 | # list of requirements that request a clone of all revlog if added/removed |
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20 | # list of requirements that request a clone of all revlog if added/removed | |
21 | RECLONES_REQUIREMENTS = { |
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21 | RECLONES_REQUIREMENTS = { | |
22 | b'generaldelta', |
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22 | b'generaldelta', | |
23 | requirements.SPARSEREVLOG_REQUIREMENT, |
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23 | requirements.SPARSEREVLOG_REQUIREMENT, | |
24 | } |
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24 | } | |
25 |
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25 | |||
26 |
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26 | |||
27 | def requiredsourcerequirements(repo): |
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28 | """Obtain requirements required to be present to upgrade a repo. |
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29 |
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30 | An upgrade will not be allowed if the repository doesn't have the |
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31 | requirements returned by this function. |
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32 | """ |
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33 | return { |
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34 | # Introduced in Mercurial 0.9.2. |
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35 | b'revlogv1', |
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36 | # Introduced in Mercurial 0.9.2. |
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37 | b'store', |
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38 | } |
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39 |
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40 |
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41 | def blocksourcerequirements(repo): |
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42 | """Obtain requirements that will prevent an upgrade from occurring. |
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43 |
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44 | An upgrade cannot be performed if the source repository contains a |
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45 | requirements in the returned set. |
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46 | """ |
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47 | return { |
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48 | # The upgrade code does not yet support these experimental features. |
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49 | # This is an artificial limitation. |
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50 | requirements.TREEMANIFEST_REQUIREMENT, |
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51 | # This was a precursor to generaldelta and was never enabled by default. |
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52 | # It should (hopefully) not exist in the wild. |
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53 | b'parentdelta', |
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54 | # Upgrade should operate on the actual store, not the shared link. |
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55 | requirements.SHARED_REQUIREMENT, |
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56 | } |
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57 |
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58 |
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59 | def supportremovedrequirements(repo): |
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27 | def supportremovedrequirements(repo): | |
60 | """Obtain requirements that can be removed during an upgrade. |
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28 | """Obtain requirements that can be removed during an upgrade. | |
61 |
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29 | |||
62 | If an upgrade were to create a repository that dropped a requirement, |
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30 | If an upgrade were to create a repository that dropped a requirement, | |
63 | the dropped requirement must appear in the returned set for the upgrade |
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31 | the dropped requirement must appear in the returned set for the upgrade | |
64 | to be allowed. |
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32 | to be allowed. | |
65 | """ |
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33 | """ | |
66 | supported = { |
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34 | supported = { | |
67 | requirements.SPARSEREVLOG_REQUIREMENT, |
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35 | requirements.SPARSEREVLOG_REQUIREMENT, | |
68 | requirements.SIDEDATA_REQUIREMENT, |
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36 | requirements.SIDEDATA_REQUIREMENT, | |
69 | requirements.COPIESSDC_REQUIREMENT, |
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37 | requirements.COPIESSDC_REQUIREMENT, | |
70 | requirements.NODEMAP_REQUIREMENT, |
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38 | requirements.NODEMAP_REQUIREMENT, | |
71 | requirements.SHARESAFE_REQUIREMENT, |
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39 | requirements.SHARESAFE_REQUIREMENT, | |
72 | } |
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40 | } | |
73 | for name in compression.compengines: |
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41 | for name in compression.compengines: | |
74 | engine = compression.compengines[name] |
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42 | engine = compression.compengines[name] | |
75 | if engine.available() and engine.revlogheader(): |
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43 | if engine.available() and engine.revlogheader(): | |
76 | supported.add(b'exp-compression-%s' % name) |
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44 | supported.add(b'exp-compression-%s' % name) | |
77 | if engine.name() == b'zstd': |
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45 | if engine.name() == b'zstd': | |
78 | supported.add(b'revlog-compression-zstd') |
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46 | supported.add(b'revlog-compression-zstd') | |
79 | return supported |
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47 | return supported | |
80 |
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48 | |||
81 |
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49 | |||
82 | def supporteddestrequirements(repo): |
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50 | def supporteddestrequirements(repo): | |
83 | """Obtain requirements that upgrade supports in the destination. |
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51 | """Obtain requirements that upgrade supports in the destination. | |
84 |
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52 | |||
85 | If the result of the upgrade would create requirements not in this set, |
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53 | If the result of the upgrade would create requirements not in this set, | |
86 | the upgrade is disallowed. |
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54 | the upgrade is disallowed. | |
87 |
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55 | |||
88 | Extensions should monkeypatch this to add their custom requirements. |
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56 | Extensions should monkeypatch this to add their custom requirements. | |
89 | """ |
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57 | """ | |
90 | supported = { |
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58 | supported = { | |
91 | b'dotencode', |
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59 | b'dotencode', | |
92 | b'fncache', |
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60 | b'fncache', | |
93 | b'generaldelta', |
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61 | b'generaldelta', | |
94 | b'revlogv1', |
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62 | b'revlogv1', | |
95 | b'store', |
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63 | b'store', | |
96 | requirements.SPARSEREVLOG_REQUIREMENT, |
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64 | requirements.SPARSEREVLOG_REQUIREMENT, | |
97 | requirements.SIDEDATA_REQUIREMENT, |
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65 | requirements.SIDEDATA_REQUIREMENT, | |
98 | requirements.COPIESSDC_REQUIREMENT, |
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66 | requirements.COPIESSDC_REQUIREMENT, | |
99 | requirements.NODEMAP_REQUIREMENT, |
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67 | requirements.NODEMAP_REQUIREMENT, | |
100 | requirements.SHARESAFE_REQUIREMENT, |
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68 | requirements.SHARESAFE_REQUIREMENT, | |
101 | } |
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69 | } | |
102 | for name in compression.compengines: |
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70 | for name in compression.compengines: | |
103 | engine = compression.compengines[name] |
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71 | engine = compression.compengines[name] | |
104 | if engine.available() and engine.revlogheader(): |
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72 | if engine.available() and engine.revlogheader(): | |
105 | supported.add(b'exp-compression-%s' % name) |
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73 | supported.add(b'exp-compression-%s' % name) | |
106 | if engine.name() == b'zstd': |
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74 | if engine.name() == b'zstd': | |
107 | supported.add(b'revlog-compression-zstd') |
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75 | supported.add(b'revlog-compression-zstd') | |
108 | return supported |
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76 | return supported | |
109 |
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77 | |||
110 |
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78 | |||
111 | def allowednewrequirements(repo): |
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79 | def allowednewrequirements(repo): | |
112 | """Obtain requirements that can be added to a repository during upgrade. |
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80 | """Obtain requirements that can be added to a repository during upgrade. | |
113 |
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81 | |||
114 | This is used to disallow proposed requirements from being added when |
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82 | This is used to disallow proposed requirements from being added when | |
115 | they weren't present before. |
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83 | they weren't present before. | |
116 |
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84 | |||
117 | We use a list of allowed requirement additions instead of a list of known |
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85 | We use a list of allowed requirement additions instead of a list of known | |
118 | bad additions because the whitelist approach is safer and will prevent |
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86 | bad additions because the whitelist approach is safer and will prevent | |
119 | future, unknown requirements from accidentally being added. |
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87 | future, unknown requirements from accidentally being added. | |
120 | """ |
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88 | """ | |
121 | supported = { |
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89 | supported = { | |
122 | b'dotencode', |
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90 | b'dotencode', | |
123 | b'fncache', |
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91 | b'fncache', | |
124 | b'generaldelta', |
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92 | b'generaldelta', | |
125 | requirements.SPARSEREVLOG_REQUIREMENT, |
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93 | requirements.SPARSEREVLOG_REQUIREMENT, | |
126 | requirements.SIDEDATA_REQUIREMENT, |
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94 | requirements.SIDEDATA_REQUIREMENT, | |
127 | requirements.COPIESSDC_REQUIREMENT, |
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95 | requirements.COPIESSDC_REQUIREMENT, | |
128 | requirements.NODEMAP_REQUIREMENT, |
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96 | requirements.NODEMAP_REQUIREMENT, | |
129 | requirements.SHARESAFE_REQUIREMENT, |
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97 | requirements.SHARESAFE_REQUIREMENT, | |
130 | } |
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98 | } | |
131 | for name in compression.compengines: |
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99 | for name in compression.compengines: | |
132 | engine = compression.compengines[name] |
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100 | engine = compression.compengines[name] | |
133 | if engine.available() and engine.revlogheader(): |
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101 | if engine.available() and engine.revlogheader(): | |
134 | supported.add(b'exp-compression-%s' % name) |
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102 | supported.add(b'exp-compression-%s' % name) | |
135 | if engine.name() == b'zstd': |
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103 | if engine.name() == b'zstd': | |
136 | supported.add(b'revlog-compression-zstd') |
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104 | supported.add(b'revlog-compression-zstd') | |
137 | return supported |
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105 | return supported | |
138 |
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106 | |||
139 |
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107 | |||
140 | def preservedrequirements(repo): |
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108 | def preservedrequirements(repo): | |
141 | return set() |
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109 | return set() | |
142 |
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110 | |||
143 |
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111 | |||
144 | DEFICIENCY = b'deficiency' |
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112 | DEFICIENCY = b'deficiency' | |
145 | OPTIMISATION = b'optimization' |
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113 | OPTIMISATION = b'optimization' | |
146 |
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114 | |||
147 |
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115 | |||
148 | class improvement(object): |
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116 | class improvement(object): | |
149 | """Represents an improvement that can be made as part of an upgrade. |
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117 | """Represents an improvement that can be made as part of an upgrade. | |
150 |
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118 | |||
151 | The following attributes are defined on each instance: |
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119 | The following attributes are defined on each instance: | |
152 |
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120 | |||
153 | name |
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121 | name | |
154 | Machine-readable string uniquely identifying this improvement. It |
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122 | Machine-readable string uniquely identifying this improvement. It | |
155 | will be mapped to an action later in the upgrade process. |
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123 | will be mapped to an action later in the upgrade process. | |
156 |
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124 | |||
157 | type |
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125 | type | |
158 | Either ``DEFICIENCY`` or ``OPTIMISATION``. A deficiency is an obvious |
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126 | Either ``DEFICIENCY`` or ``OPTIMISATION``. A deficiency is an obvious | |
159 | problem. An optimization is an action (sometimes optional) that |
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127 | problem. An optimization is an action (sometimes optional) that | |
160 | can be taken to further improve the state of the repository. |
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128 | can be taken to further improve the state of the repository. | |
161 |
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129 | |||
162 | description |
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130 | description | |
163 | Message intended for humans explaining the improvement in more detail, |
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131 | Message intended for humans explaining the improvement in more detail, | |
164 | including the implications of it. For ``DEFICIENCY`` types, should be |
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132 | including the implications of it. For ``DEFICIENCY`` types, should be | |
165 | worded in the present tense. For ``OPTIMISATION`` types, should be |
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133 | worded in the present tense. For ``OPTIMISATION`` types, should be | |
166 | worded in the future tense. |
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134 | worded in the future tense. | |
167 |
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135 | |||
168 | upgrademessage |
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136 | upgrademessage | |
169 | Message intended for humans explaining what an upgrade addressing this |
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137 | Message intended for humans explaining what an upgrade addressing this | |
170 | issue will do. Should be worded in the future tense. |
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138 | issue will do. Should be worded in the future tense. | |
171 | """ |
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139 | """ | |
172 |
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140 | |||
173 | def __init__(self, name, type, description, upgrademessage): |
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141 | def __init__(self, name, type, description, upgrademessage): | |
174 | self.name = name |
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142 | self.name = name | |
175 | self.type = type |
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143 | self.type = type | |
176 | self.description = description |
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144 | self.description = description | |
177 | self.upgrademessage = upgrademessage |
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145 | self.upgrademessage = upgrademessage | |
178 |
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146 | |||
179 | def __eq__(self, other): |
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147 | def __eq__(self, other): | |
180 | if not isinstance(other, improvement): |
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148 | if not isinstance(other, improvement): | |
181 | # This is what python tell use to do |
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149 | # This is what python tell use to do | |
182 | return NotImplemented |
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150 | return NotImplemented | |
183 | return self.name == other.name |
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151 | return self.name == other.name | |
184 |
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152 | |||
185 | def __ne__(self, other): |
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153 | def __ne__(self, other): | |
186 | return not (self == other) |
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154 | return not (self == other) | |
187 |
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155 | |||
188 | def __hash__(self): |
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156 | def __hash__(self): | |
189 | return hash(self.name) |
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157 | return hash(self.name) | |
190 |
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158 | |||
191 |
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159 | |||
192 | allformatvariant = [] |
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160 | allformatvariant = [] | |
193 |
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161 | |||
194 |
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162 | |||
195 | def registerformatvariant(cls): |
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163 | def registerformatvariant(cls): | |
196 | allformatvariant.append(cls) |
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164 | allformatvariant.append(cls) | |
197 | return cls |
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165 | return cls | |
198 |
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166 | |||
199 |
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167 | |||
200 | class formatvariant(improvement): |
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168 | class formatvariant(improvement): | |
201 | """an improvement subclass dedicated to repository format""" |
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169 | """an improvement subclass dedicated to repository format""" | |
202 |
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170 | |||
203 | type = DEFICIENCY |
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171 | type = DEFICIENCY | |
204 | ### The following attributes should be defined for each class: |
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172 | ### The following attributes should be defined for each class: | |
205 |
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173 | |||
206 | # machine-readable string uniquely identifying this improvement. it will be |
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174 | # machine-readable string uniquely identifying this improvement. it will be | |
207 | # mapped to an action later in the upgrade process. |
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175 | # mapped to an action later in the upgrade process. | |
208 | name = None |
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176 | name = None | |
209 |
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177 | |||
210 | # message intended for humans explaining the improvement in more detail, |
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178 | # message intended for humans explaining the improvement in more detail, | |
211 | # including the implications of it ``DEFICIENCY`` types, should be worded |
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179 | # including the implications of it ``DEFICIENCY`` types, should be worded | |
212 | # in the present tense. |
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180 | # in the present tense. | |
213 | description = None |
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181 | description = None | |
214 |
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182 | |||
215 | # message intended for humans explaining what an upgrade addressing this |
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183 | # message intended for humans explaining what an upgrade addressing this | |
216 | # issue will do. should be worded in the future tense. |
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184 | # issue will do. should be worded in the future tense. | |
217 | upgrademessage = None |
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185 | upgrademessage = None | |
218 |
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186 | |||
219 | # value of current Mercurial default for new repository |
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187 | # value of current Mercurial default for new repository | |
220 | default = None |
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188 | default = None | |
221 |
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189 | |||
222 | def __init__(self): |
|
190 | def __init__(self): | |
223 | raise NotImplementedError() |
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191 | raise NotImplementedError() | |
224 |
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192 | |||
225 | @staticmethod |
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193 | @staticmethod | |
226 | def fromrepo(repo): |
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194 | def fromrepo(repo): | |
227 | """current value of the variant in the repository""" |
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195 | """current value of the variant in the repository""" | |
228 | raise NotImplementedError() |
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196 | raise NotImplementedError() | |
229 |
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197 | |||
230 | @staticmethod |
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198 | @staticmethod | |
231 | def fromconfig(repo): |
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199 | def fromconfig(repo): | |
232 | """current value of the variant in the configuration""" |
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200 | """current value of the variant in the configuration""" | |
233 | raise NotImplementedError() |
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201 | raise NotImplementedError() | |
234 |
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202 | |||
235 |
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203 | |||
236 | class requirementformatvariant(formatvariant): |
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204 | class requirementformatvariant(formatvariant): | |
237 | """formatvariant based on a 'requirement' name. |
|
205 | """formatvariant based on a 'requirement' name. | |
238 |
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206 | |||
239 | Many format variant are controlled by a 'requirement'. We define a small |
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207 | Many format variant are controlled by a 'requirement'. We define a small | |
240 | subclass to factor the code. |
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208 | subclass to factor the code. | |
241 | """ |
|
209 | """ | |
242 |
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210 | |||
243 | # the requirement that control this format variant |
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211 | # the requirement that control this format variant | |
244 | _requirement = None |
|
212 | _requirement = None | |
245 |
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213 | |||
246 | @staticmethod |
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214 | @staticmethod | |
247 | def _newreporequirements(ui): |
|
215 | def _newreporequirements(ui): | |
248 | return localrepo.newreporequirements( |
|
216 | return localrepo.newreporequirements( | |
249 | ui, localrepo.defaultcreateopts(ui) |
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217 | ui, localrepo.defaultcreateopts(ui) | |
250 | ) |
|
218 | ) | |
251 |
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219 | |||
252 | @classmethod |
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220 | @classmethod | |
253 | def fromrepo(cls, repo): |
|
221 | def fromrepo(cls, repo): | |
254 | assert cls._requirement is not None |
|
222 | assert cls._requirement is not None | |
255 | return cls._requirement in repo.requirements |
|
223 | return cls._requirement in repo.requirements | |
256 |
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224 | |||
257 | @classmethod |
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225 | @classmethod | |
258 | def fromconfig(cls, repo): |
|
226 | def fromconfig(cls, repo): | |
259 | assert cls._requirement is not None |
|
227 | assert cls._requirement is not None | |
260 | return cls._requirement in cls._newreporequirements(repo.ui) |
|
228 | return cls._requirement in cls._newreporequirements(repo.ui) | |
261 |
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229 | |||
262 |
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230 | |||
263 | @registerformatvariant |
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231 | @registerformatvariant | |
264 | class fncache(requirementformatvariant): |
|
232 | class fncache(requirementformatvariant): | |
265 | name = b'fncache' |
|
233 | name = b'fncache' | |
266 |
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234 | |||
267 | _requirement = b'fncache' |
|
235 | _requirement = b'fncache' | |
268 |
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236 | |||
269 | default = True |
|
237 | default = True | |
270 |
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238 | |||
271 | description = _( |
|
239 | description = _( | |
272 | b'long and reserved filenames may not work correctly; ' |
|
240 | b'long and reserved filenames may not work correctly; ' | |
273 | b'repository performance is sub-optimal' |
|
241 | b'repository performance is sub-optimal' | |
274 | ) |
|
242 | ) | |
275 |
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243 | |||
276 | upgrademessage = _( |
|
244 | upgrademessage = _( | |
277 | b'repository will be more resilient to storing ' |
|
245 | b'repository will be more resilient to storing ' | |
278 | b'certain paths and performance of certain ' |
|
246 | b'certain paths and performance of certain ' | |
279 | b'operations should be improved' |
|
247 | b'operations should be improved' | |
280 | ) |
|
248 | ) | |
281 |
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249 | |||
282 |
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250 | |||
283 | @registerformatvariant |
|
251 | @registerformatvariant | |
284 | class dotencode(requirementformatvariant): |
|
252 | class dotencode(requirementformatvariant): | |
285 | name = b'dotencode' |
|
253 | name = b'dotencode' | |
286 |
|
254 | |||
287 | _requirement = b'dotencode' |
|
255 | _requirement = b'dotencode' | |
288 |
|
256 | |||
289 | default = True |
|
257 | default = True | |
290 |
|
258 | |||
291 | description = _( |
|
259 | description = _( | |
292 | b'storage of filenames beginning with a period or ' |
|
260 | b'storage of filenames beginning with a period or ' | |
293 | b'space may not work correctly' |
|
261 | b'space may not work correctly' | |
294 | ) |
|
262 | ) | |
295 |
|
263 | |||
296 | upgrademessage = _( |
|
264 | upgrademessage = _( | |
297 | b'repository will be better able to store files ' |
|
265 | b'repository will be better able to store files ' | |
298 | b'beginning with a space or period' |
|
266 | b'beginning with a space or period' | |
299 | ) |
|
267 | ) | |
300 |
|
268 | |||
301 |
|
269 | |||
302 | @registerformatvariant |
|
270 | @registerformatvariant | |
303 | class generaldelta(requirementformatvariant): |
|
271 | class generaldelta(requirementformatvariant): | |
304 | name = b'generaldelta' |
|
272 | name = b'generaldelta' | |
305 |
|
273 | |||
306 | _requirement = b'generaldelta' |
|
274 | _requirement = b'generaldelta' | |
307 |
|
275 | |||
308 | default = True |
|
276 | default = True | |
309 |
|
277 | |||
310 | description = _( |
|
278 | description = _( | |
311 | b'deltas within internal storage are unable to ' |
|
279 | b'deltas within internal storage are unable to ' | |
312 | b'choose optimal revisions; repository is larger and ' |
|
280 | b'choose optimal revisions; repository is larger and ' | |
313 | b'slower than it could be; interaction with other ' |
|
281 | b'slower than it could be; interaction with other ' | |
314 | b'repositories may require extra network and CPU ' |
|
282 | b'repositories may require extra network and CPU ' | |
315 | b'resources, making "hg push" and "hg pull" slower' |
|
283 | b'resources, making "hg push" and "hg pull" slower' | |
316 | ) |
|
284 | ) | |
317 |
|
285 | |||
318 | upgrademessage = _( |
|
286 | upgrademessage = _( | |
319 | b'repository storage will be able to create ' |
|
287 | b'repository storage will be able to create ' | |
320 | b'optimal deltas; new repository data will be ' |
|
288 | b'optimal deltas; new repository data will be ' | |
321 | b'smaller and read times should decrease; ' |
|
289 | b'smaller and read times should decrease; ' | |
322 | b'interacting with other repositories using this ' |
|
290 | b'interacting with other repositories using this ' | |
323 | b'storage model should require less network and ' |
|
291 | b'storage model should require less network and ' | |
324 | b'CPU resources, making "hg push" and "hg pull" ' |
|
292 | b'CPU resources, making "hg push" and "hg pull" ' | |
325 | b'faster' |
|
293 | b'faster' | |
326 | ) |
|
294 | ) | |
327 |
|
295 | |||
328 |
|
296 | |||
329 | @registerformatvariant |
|
297 | @registerformatvariant | |
330 | class sharesafe(requirementformatvariant): |
|
298 | class sharesafe(requirementformatvariant): | |
331 | name = b'exp-sharesafe' |
|
299 | name = b'exp-sharesafe' | |
332 | _requirement = requirements.SHARESAFE_REQUIREMENT |
|
300 | _requirement = requirements.SHARESAFE_REQUIREMENT | |
333 |
|
301 | |||
334 | default = False |
|
302 | default = False | |
335 |
|
303 | |||
336 | description = _( |
|
304 | description = _( | |
337 | b'old shared repositories do not share source repository ' |
|
305 | b'old shared repositories do not share source repository ' | |
338 | b'requirements and config. This leads to various problems ' |
|
306 | b'requirements and config. This leads to various problems ' | |
339 | b'when the source repository format is upgraded or some new ' |
|
307 | b'when the source repository format is upgraded or some new ' | |
340 | b'extensions are enabled.' |
|
308 | b'extensions are enabled.' | |
341 | ) |
|
309 | ) | |
342 |
|
310 | |||
343 | upgrademessage = _( |
|
311 | upgrademessage = _( | |
344 | b'Upgrades a repository to share-safe format so that future ' |
|
312 | b'Upgrades a repository to share-safe format so that future ' | |
345 | b'shares of this repository share its requirements and configs.' |
|
313 | b'shares of this repository share its requirements and configs.' | |
346 | ) |
|
314 | ) | |
347 |
|
315 | |||
348 |
|
316 | |||
349 | @registerformatvariant |
|
317 | @registerformatvariant | |
350 | class sparserevlog(requirementformatvariant): |
|
318 | class sparserevlog(requirementformatvariant): | |
351 | name = b'sparserevlog' |
|
319 | name = b'sparserevlog' | |
352 |
|
320 | |||
353 | _requirement = requirements.SPARSEREVLOG_REQUIREMENT |
|
321 | _requirement = requirements.SPARSEREVLOG_REQUIREMENT | |
354 |
|
322 | |||
355 | default = True |
|
323 | default = True | |
356 |
|
324 | |||
357 | description = _( |
|
325 | description = _( | |
358 | b'in order to limit disk reading and memory usage on older ' |
|
326 | b'in order to limit disk reading and memory usage on older ' | |
359 | b'version, the span of a delta chain from its root to its ' |
|
327 | b'version, the span of a delta chain from its root to its ' | |
360 | b'end is limited, whatever the relevant data in this span. ' |
|
328 | b'end is limited, whatever the relevant data in this span. ' | |
361 | b'This can severly limit Mercurial ability to build good ' |
|
329 | b'This can severly limit Mercurial ability to build good ' | |
362 | b'chain of delta resulting is much more storage space being ' |
|
330 | b'chain of delta resulting is much more storage space being ' | |
363 | b'taken and limit reusability of on disk delta during ' |
|
331 | b'taken and limit reusability of on disk delta during ' | |
364 | b'exchange.' |
|
332 | b'exchange.' | |
365 | ) |
|
333 | ) | |
366 |
|
334 | |||
367 | upgrademessage = _( |
|
335 | upgrademessage = _( | |
368 | b'Revlog supports delta chain with more unused data ' |
|
336 | b'Revlog supports delta chain with more unused data ' | |
369 | b'between payload. These gaps will be skipped at read ' |
|
337 | b'between payload. These gaps will be skipped at read ' | |
370 | b'time. This allows for better delta chains, making a ' |
|
338 | b'time. This allows for better delta chains, making a ' | |
371 | b'better compression and faster exchange with server.' |
|
339 | b'better compression and faster exchange with server.' | |
372 | ) |
|
340 | ) | |
373 |
|
341 | |||
374 |
|
342 | |||
375 | @registerformatvariant |
|
343 | @registerformatvariant | |
376 | class sidedata(requirementformatvariant): |
|
344 | class sidedata(requirementformatvariant): | |
377 | name = b'sidedata' |
|
345 | name = b'sidedata' | |
378 |
|
346 | |||
379 | _requirement = requirements.SIDEDATA_REQUIREMENT |
|
347 | _requirement = requirements.SIDEDATA_REQUIREMENT | |
380 |
|
348 | |||
381 | default = False |
|
349 | default = False | |
382 |
|
350 | |||
383 | description = _( |
|
351 | description = _( | |
384 | b'Allows storage of extra data alongside a revision, ' |
|
352 | b'Allows storage of extra data alongside a revision, ' | |
385 | b'unlocking various caching options.' |
|
353 | b'unlocking various caching options.' | |
386 | ) |
|
354 | ) | |
387 |
|
355 | |||
388 | upgrademessage = _(b'Allows storage of extra data alongside a revision.') |
|
356 | upgrademessage = _(b'Allows storage of extra data alongside a revision.') | |
389 |
|
357 | |||
390 |
|
358 | |||
391 | @registerformatvariant |
|
359 | @registerformatvariant | |
392 | class persistentnodemap(requirementformatvariant): |
|
360 | class persistentnodemap(requirementformatvariant): | |
393 | name = b'persistent-nodemap' |
|
361 | name = b'persistent-nodemap' | |
394 |
|
362 | |||
395 | _requirement = requirements.NODEMAP_REQUIREMENT |
|
363 | _requirement = requirements.NODEMAP_REQUIREMENT | |
396 |
|
364 | |||
397 | default = False |
|
365 | default = False | |
398 |
|
366 | |||
399 | description = _( |
|
367 | description = _( | |
400 | b'persist the node -> rev mapping on disk to speedup lookup' |
|
368 | b'persist the node -> rev mapping on disk to speedup lookup' | |
401 | ) |
|
369 | ) | |
402 |
|
370 | |||
403 | upgrademessage = _(b'Speedup revision lookup by node id.') |
|
371 | upgrademessage = _(b'Speedup revision lookup by node id.') | |
404 |
|
372 | |||
405 |
|
373 | |||
406 | @registerformatvariant |
|
374 | @registerformatvariant | |
407 | class copiessdc(requirementformatvariant): |
|
375 | class copiessdc(requirementformatvariant): | |
408 | name = b'copies-sdc' |
|
376 | name = b'copies-sdc' | |
409 |
|
377 | |||
410 | _requirement = requirements.COPIESSDC_REQUIREMENT |
|
378 | _requirement = requirements.COPIESSDC_REQUIREMENT | |
411 |
|
379 | |||
412 | default = False |
|
380 | default = False | |
413 |
|
381 | |||
414 | description = _(b'Stores copies information alongside changesets.') |
|
382 | description = _(b'Stores copies information alongside changesets.') | |
415 |
|
383 | |||
416 | upgrademessage = _( |
|
384 | upgrademessage = _( | |
417 | b'Allows to use more efficient algorithm to deal with ' b'copy tracing.' |
|
385 | b'Allows to use more efficient algorithm to deal with ' b'copy tracing.' | |
418 | ) |
|
386 | ) | |
419 |
|
387 | |||
420 |
|
388 | |||
421 | @registerformatvariant |
|
389 | @registerformatvariant | |
422 | class removecldeltachain(formatvariant): |
|
390 | class removecldeltachain(formatvariant): | |
423 | name = b'plain-cl-delta' |
|
391 | name = b'plain-cl-delta' | |
424 |
|
392 | |||
425 | default = True |
|
393 | default = True | |
426 |
|
394 | |||
427 | description = _( |
|
395 | description = _( | |
428 | b'changelog storage is using deltas instead of ' |
|
396 | b'changelog storage is using deltas instead of ' | |
429 | b'raw entries; changelog reading and any ' |
|
397 | b'raw entries; changelog reading and any ' | |
430 | b'operation relying on changelog data are slower ' |
|
398 | b'operation relying on changelog data are slower ' | |
431 | b'than they could be' |
|
399 | b'than they could be' | |
432 | ) |
|
400 | ) | |
433 |
|
401 | |||
434 | upgrademessage = _( |
|
402 | upgrademessage = _( | |
435 | b'changelog storage will be reformated to ' |
|
403 | b'changelog storage will be reformated to ' | |
436 | b'store raw entries; changelog reading will be ' |
|
404 | b'store raw entries; changelog reading will be ' | |
437 | b'faster; changelog size may be reduced' |
|
405 | b'faster; changelog size may be reduced' | |
438 | ) |
|
406 | ) | |
439 |
|
407 | |||
440 | @staticmethod |
|
408 | @staticmethod | |
441 | def fromrepo(repo): |
|
409 | def fromrepo(repo): | |
442 | # Mercurial 4.0 changed changelogs to not use delta chains. Search for |
|
410 | # Mercurial 4.0 changed changelogs to not use delta chains. Search for | |
443 | # changelogs with deltas. |
|
411 | # changelogs with deltas. | |
444 | cl = repo.changelog |
|
412 | cl = repo.changelog | |
445 | chainbase = cl.chainbase |
|
413 | chainbase = cl.chainbase | |
446 | return all(rev == chainbase(rev) for rev in cl) |
|
414 | return all(rev == chainbase(rev) for rev in cl) | |
447 |
|
415 | |||
448 | @staticmethod |
|
416 | @staticmethod | |
449 | def fromconfig(repo): |
|
417 | def fromconfig(repo): | |
450 | return True |
|
418 | return True | |
451 |
|
419 | |||
452 |
|
420 | |||
453 | @registerformatvariant |
|
421 | @registerformatvariant | |
454 | class compressionengine(formatvariant): |
|
422 | class compressionengine(formatvariant): | |
455 | name = b'compression' |
|
423 | name = b'compression' | |
456 | default = b'zlib' |
|
424 | default = b'zlib' | |
457 |
|
425 | |||
458 | description = _( |
|
426 | description = _( | |
459 | b'Compresion algorithm used to compress data. ' |
|
427 | b'Compresion algorithm used to compress data. ' | |
460 | b'Some engine are faster than other' |
|
428 | b'Some engine are faster than other' | |
461 | ) |
|
429 | ) | |
462 |
|
430 | |||
463 | upgrademessage = _( |
|
431 | upgrademessage = _( | |
464 | b'revlog content will be recompressed with the new algorithm.' |
|
432 | b'revlog content will be recompressed with the new algorithm.' | |
465 | ) |
|
433 | ) | |
466 |
|
434 | |||
467 | @classmethod |
|
435 | @classmethod | |
468 | def fromrepo(cls, repo): |
|
436 | def fromrepo(cls, repo): | |
469 | # we allow multiple compression engine requirement to co-exist because |
|
437 | # we allow multiple compression engine requirement to co-exist because | |
470 | # strickly speaking, revlog seems to support mixed compression style. |
|
438 | # strickly speaking, revlog seems to support mixed compression style. | |
471 | # |
|
439 | # | |
472 | # The compression used for new entries will be "the last one" |
|
440 | # The compression used for new entries will be "the last one" | |
473 | compression = b'zlib' |
|
441 | compression = b'zlib' | |
474 | for req in repo.requirements: |
|
442 | for req in repo.requirements: | |
475 | prefix = req.startswith |
|
443 | prefix = req.startswith | |
476 | if prefix(b'revlog-compression-') or prefix(b'exp-compression-'): |
|
444 | if prefix(b'revlog-compression-') or prefix(b'exp-compression-'): | |
477 | compression = req.split(b'-', 2)[2] |
|
445 | compression = req.split(b'-', 2)[2] | |
478 | return compression |
|
446 | return compression | |
479 |
|
447 | |||
480 | @classmethod |
|
448 | @classmethod | |
481 | def fromconfig(cls, repo): |
|
449 | def fromconfig(cls, repo): | |
482 | compengines = repo.ui.configlist(b'format', b'revlog-compression') |
|
450 | compengines = repo.ui.configlist(b'format', b'revlog-compression') | |
483 | # return the first valid value as the selection code would do |
|
451 | # return the first valid value as the selection code would do | |
484 | for comp in compengines: |
|
452 | for comp in compengines: | |
485 | if comp in util.compengines: |
|
453 | if comp in util.compengines: | |
486 | return comp |
|
454 | return comp | |
487 |
|
455 | |||
488 | # no valide compression found lets display it all for clarity |
|
456 | # no valide compression found lets display it all for clarity | |
489 | return b','.join(compengines) |
|
457 | return b','.join(compengines) | |
490 |
|
458 | |||
491 |
|
459 | |||
492 | @registerformatvariant |
|
460 | @registerformatvariant | |
493 | class compressionlevel(formatvariant): |
|
461 | class compressionlevel(formatvariant): | |
494 | name = b'compression-level' |
|
462 | name = b'compression-level' | |
495 | default = b'default' |
|
463 | default = b'default' | |
496 |
|
464 | |||
497 | description = _(b'compression level') |
|
465 | description = _(b'compression level') | |
498 |
|
466 | |||
499 | upgrademessage = _(b'revlog content will be recompressed') |
|
467 | upgrademessage = _(b'revlog content will be recompressed') | |
500 |
|
468 | |||
501 | @classmethod |
|
469 | @classmethod | |
502 | def fromrepo(cls, repo): |
|
470 | def fromrepo(cls, repo): | |
503 | comp = compressionengine.fromrepo(repo) |
|
471 | comp = compressionengine.fromrepo(repo) | |
504 | level = None |
|
472 | level = None | |
505 | if comp == b'zlib': |
|
473 | if comp == b'zlib': | |
506 | level = repo.ui.configint(b'storage', b'revlog.zlib.level') |
|
474 | level = repo.ui.configint(b'storage', b'revlog.zlib.level') | |
507 | elif comp == b'zstd': |
|
475 | elif comp == b'zstd': | |
508 | level = repo.ui.configint(b'storage', b'revlog.zstd.level') |
|
476 | level = repo.ui.configint(b'storage', b'revlog.zstd.level') | |
509 | if level is None: |
|
477 | if level is None: | |
510 | return b'default' |
|
478 | return b'default' | |
511 | return bytes(level) |
|
479 | return bytes(level) | |
512 |
|
480 | |||
513 | @classmethod |
|
481 | @classmethod | |
514 | def fromconfig(cls, repo): |
|
482 | def fromconfig(cls, repo): | |
515 | comp = compressionengine.fromconfig(repo) |
|
483 | comp = compressionengine.fromconfig(repo) | |
516 | level = None |
|
484 | level = None | |
517 | if comp == b'zlib': |
|
485 | if comp == b'zlib': | |
518 | level = repo.ui.configint(b'storage', b'revlog.zlib.level') |
|
486 | level = repo.ui.configint(b'storage', b'revlog.zlib.level') | |
519 | elif comp == b'zstd': |
|
487 | elif comp == b'zstd': | |
520 | level = repo.ui.configint(b'storage', b'revlog.zstd.level') |
|
488 | level = repo.ui.configint(b'storage', b'revlog.zstd.level') | |
521 | if level is None: |
|
489 | if level is None: | |
522 | return b'default' |
|
490 | return b'default' | |
523 | return bytes(level) |
|
491 | return bytes(level) | |
524 |
|
492 | |||
525 |
|
493 | |||
526 | def finddeficiencies(repo): |
|
494 | def finddeficiencies(repo): | |
527 | """returns a list of deficiencies that the repo suffer from""" |
|
495 | """returns a list of deficiencies that the repo suffer from""" | |
528 | deficiencies = [] |
|
496 | deficiencies = [] | |
529 |
|
497 | |||
530 | # We could detect lack of revlogv1 and store here, but they were added |
|
498 | # We could detect lack of revlogv1 and store here, but they were added | |
531 | # in 0.9.2 and we don't support upgrading repos without these |
|
499 | # in 0.9.2 and we don't support upgrading repos without these | |
532 | # requirements, so let's not bother. |
|
500 | # requirements, so let's not bother. | |
533 |
|
501 | |||
534 | for fv in allformatvariant: |
|
502 | for fv in allformatvariant: | |
535 | if not fv.fromrepo(repo): |
|
503 | if not fv.fromrepo(repo): | |
536 | deficiencies.append(fv) |
|
504 | deficiencies.append(fv) | |
537 |
|
505 | |||
538 | return deficiencies |
|
506 | return deficiencies | |
539 |
|
507 | |||
540 |
|
508 | |||
541 | ALL_OPTIMISATIONS = [] |
|
509 | ALL_OPTIMISATIONS = [] | |
542 |
|
510 | |||
543 |
|
511 | |||
544 | def register_optimization(obj): |
|
512 | def register_optimization(obj): | |
545 | ALL_OPTIMISATIONS.append(obj) |
|
513 | ALL_OPTIMISATIONS.append(obj) | |
546 | return obj |
|
514 | return obj | |
547 |
|
515 | |||
548 |
|
516 | |||
549 | register_optimization( |
|
517 | register_optimization( | |
550 | improvement( |
|
518 | improvement( | |
551 | name=b're-delta-parent', |
|
519 | name=b're-delta-parent', | |
552 | type=OPTIMISATION, |
|
520 | type=OPTIMISATION, | |
553 | description=_( |
|
521 | description=_( | |
554 | b'deltas within internal storage will be recalculated to ' |
|
522 | b'deltas within internal storage will be recalculated to ' | |
555 | b'choose an optimal base revision where this was not ' |
|
523 | b'choose an optimal base revision where this was not ' | |
556 | b'already done; the size of the repository may shrink and ' |
|
524 | b'already done; the size of the repository may shrink and ' | |
557 | b'various operations may become faster; the first time ' |
|
525 | b'various operations may become faster; the first time ' | |
558 | b'this optimization is performed could slow down upgrade ' |
|
526 | b'this optimization is performed could slow down upgrade ' | |
559 | b'execution considerably; subsequent invocations should ' |
|
527 | b'execution considerably; subsequent invocations should ' | |
560 | b'not run noticeably slower' |
|
528 | b'not run noticeably slower' | |
561 | ), |
|
529 | ), | |
562 | upgrademessage=_( |
|
530 | upgrademessage=_( | |
563 | b'deltas within internal storage will choose a new ' |
|
531 | b'deltas within internal storage will choose a new ' | |
564 | b'base revision if needed' |
|
532 | b'base revision if needed' | |
565 | ), |
|
533 | ), | |
566 | ) |
|
534 | ) | |
567 | ) |
|
535 | ) | |
568 |
|
536 | |||
569 | register_optimization( |
|
537 | register_optimization( | |
570 | improvement( |
|
538 | improvement( | |
571 | name=b're-delta-multibase', |
|
539 | name=b're-delta-multibase', | |
572 | type=OPTIMISATION, |
|
540 | type=OPTIMISATION, | |
573 | description=_( |
|
541 | description=_( | |
574 | b'deltas within internal storage will be recalculated ' |
|
542 | b'deltas within internal storage will be recalculated ' | |
575 | b'against multiple base revision and the smallest ' |
|
543 | b'against multiple base revision and the smallest ' | |
576 | b'difference will be used; the size of the repository may ' |
|
544 | b'difference will be used; the size of the repository may ' | |
577 | b'shrink significantly when there are many merges; this ' |
|
545 | b'shrink significantly when there are many merges; this ' | |
578 | b'optimization will slow down execution in proportion to ' |
|
546 | b'optimization will slow down execution in proportion to ' | |
579 | b'the number of merges in the repository and the amount ' |
|
547 | b'the number of merges in the repository and the amount ' | |
580 | b'of files in the repository; this slow down should not ' |
|
548 | b'of files in the repository; this slow down should not ' | |
581 | b'be significant unless there are tens of thousands of ' |
|
549 | b'be significant unless there are tens of thousands of ' | |
582 | b'files and thousands of merges' |
|
550 | b'files and thousands of merges' | |
583 | ), |
|
551 | ), | |
584 | upgrademessage=_( |
|
552 | upgrademessage=_( | |
585 | b'deltas within internal storage will choose an ' |
|
553 | b'deltas within internal storage will choose an ' | |
586 | b'optimal delta by computing deltas against multiple ' |
|
554 | b'optimal delta by computing deltas against multiple ' | |
587 | b'parents; may slow down execution time ' |
|
555 | b'parents; may slow down execution time ' | |
588 | b'significantly' |
|
556 | b'significantly' | |
589 | ), |
|
557 | ), | |
590 | ) |
|
558 | ) | |
591 | ) |
|
559 | ) | |
592 |
|
560 | |||
593 | register_optimization( |
|
561 | register_optimization( | |
594 | improvement( |
|
562 | improvement( | |
595 | name=b're-delta-all', |
|
563 | name=b're-delta-all', | |
596 | type=OPTIMISATION, |
|
564 | type=OPTIMISATION, | |
597 | description=_( |
|
565 | description=_( | |
598 | b'deltas within internal storage will always be ' |
|
566 | b'deltas within internal storage will always be ' | |
599 | b'recalculated without reusing prior deltas; this will ' |
|
567 | b'recalculated without reusing prior deltas; this will ' | |
600 | b'likely make execution run several times slower; this ' |
|
568 | b'likely make execution run several times slower; this ' | |
601 | b'optimization is typically not needed' |
|
569 | b'optimization is typically not needed' | |
602 | ), |
|
570 | ), | |
603 | upgrademessage=_( |
|
571 | upgrademessage=_( | |
604 | b'deltas within internal storage will be fully ' |
|
572 | b'deltas within internal storage will be fully ' | |
605 | b'recomputed; this will likely drastically slow down ' |
|
573 | b'recomputed; this will likely drastically slow down ' | |
606 | b'execution time' |
|
574 | b'execution time' | |
607 | ), |
|
575 | ), | |
608 | ) |
|
576 | ) | |
609 | ) |
|
577 | ) | |
610 |
|
578 | |||
611 | register_optimization( |
|
579 | register_optimization( | |
612 | improvement( |
|
580 | improvement( | |
613 | name=b're-delta-fulladd', |
|
581 | name=b're-delta-fulladd', | |
614 | type=OPTIMISATION, |
|
582 | type=OPTIMISATION, | |
615 | description=_( |
|
583 | description=_( | |
616 | b'every revision will be re-added as if it was new ' |
|
584 | b'every revision will be re-added as if it was new ' | |
617 | b'content. It will go through the full storage ' |
|
585 | b'content. It will go through the full storage ' | |
618 | b'mechanism giving extensions a chance to process it ' |
|
586 | b'mechanism giving extensions a chance to process it ' | |
619 | b'(eg. lfs). This is similar to "re-delta-all" but even ' |
|
587 | b'(eg. lfs). This is similar to "re-delta-all" but even ' | |
620 | b'slower since more logic is involved.' |
|
588 | b'slower since more logic is involved.' | |
621 | ), |
|
589 | ), | |
622 | upgrademessage=_( |
|
590 | upgrademessage=_( | |
623 | b'each revision will be added as new content to the ' |
|
591 | b'each revision will be added as new content to the ' | |
624 | b'internal storage; this will likely drastically slow ' |
|
592 | b'internal storage; this will likely drastically slow ' | |
625 | b'down execution time, but some extensions might need ' |
|
593 | b'down execution time, but some extensions might need ' | |
626 | b'it' |
|
594 | b'it' | |
627 | ), |
|
595 | ), | |
628 | ) |
|
596 | ) | |
629 | ) |
|
597 | ) | |
630 |
|
598 | |||
631 |
|
599 | |||
632 | def findoptimizations(repo): |
|
600 | def findoptimizations(repo): | |
633 | """Determine optimisation that could be used during upgrade""" |
|
601 | """Determine optimisation that could be used during upgrade""" | |
634 | # These are unconditionally added. There is logic later that figures out |
|
602 | # These are unconditionally added. There is logic later that figures out | |
635 | # which ones to apply. |
|
603 | # which ones to apply. | |
636 | return list(ALL_OPTIMISATIONS) |
|
604 | return list(ALL_OPTIMISATIONS) | |
637 |
|
605 | |||
638 |
|
606 | |||
639 | def determineactions(repo, deficiencies, sourcereqs, destreqs): |
|
607 | def determineactions(repo, deficiencies, sourcereqs, destreqs): | |
640 | """Determine upgrade actions that will be performed. |
|
608 | """Determine upgrade actions that will be performed. | |
641 |
|
609 | |||
642 | Given a list of improvements as returned by ``finddeficiencies`` and |
|
610 | Given a list of improvements as returned by ``finddeficiencies`` and | |
643 | ``findoptimizations``, determine the list of upgrade actions that |
|
611 | ``findoptimizations``, determine the list of upgrade actions that | |
644 | will be performed. |
|
612 | will be performed. | |
645 |
|
613 | |||
646 | The role of this function is to filter improvements if needed, apply |
|
614 | The role of this function is to filter improvements if needed, apply | |
647 | recommended optimizations from the improvements list that make sense, |
|
615 | recommended optimizations from the improvements list that make sense, | |
648 | etc. |
|
616 | etc. | |
649 |
|
617 | |||
650 | Returns a list of action names. |
|
618 | Returns a list of action names. | |
651 | """ |
|
619 | """ | |
652 | newactions = [] |
|
620 | newactions = [] | |
653 |
|
621 | |||
654 | for d in deficiencies: |
|
622 | for d in deficiencies: | |
655 | name = d._requirement |
|
623 | name = d._requirement | |
656 |
|
624 | |||
657 | # If the action is a requirement that doesn't show up in the |
|
625 | # If the action is a requirement that doesn't show up in the | |
658 | # destination requirements, prune the action. |
|
626 | # destination requirements, prune the action. | |
659 | if name is not None and name not in destreqs: |
|
627 | if name is not None and name not in destreqs: | |
660 | continue |
|
628 | continue | |
661 |
|
629 | |||
662 | newactions.append(d) |
|
630 | newactions.append(d) | |
663 |
|
631 | |||
664 | # FUTURE consider adding some optimizations here for certain transitions. |
|
632 | # FUTURE consider adding some optimizations here for certain transitions. | |
665 | # e.g. adding generaldelta could schedule parent redeltas. |
|
633 | # e.g. adding generaldelta could schedule parent redeltas. | |
666 |
|
634 | |||
667 | return newactions |
|
635 | return newactions | |
668 |
|
636 | |||
669 |
|
637 | |||
|
638 | ### Code checking if a repository can got through the upgrade process at all. # | |||
|
639 | ||||
|
640 | ||||
|
641 | def requiredsourcerequirements(repo): | |||
|
642 | """Obtain requirements required to be present to upgrade a repo. | |||
|
643 | ||||
|
644 | An upgrade will not be allowed if the repository doesn't have the | |||
|
645 | requirements returned by this function. | |||
|
646 | """ | |||
|
647 | return { | |||
|
648 | # Introduced in Mercurial 0.9.2. | |||
|
649 | b'revlogv1', | |||
|
650 | # Introduced in Mercurial 0.9.2. | |||
|
651 | b'store', | |||
|
652 | } | |||
|
653 | ||||
|
654 | ||||
|
655 | def blocksourcerequirements(repo): | |||
|
656 | """Obtain requirements that will prevent an upgrade from occurring. | |||
|
657 | ||||
|
658 | An upgrade cannot be performed if the source repository contains a | |||
|
659 | requirements in the returned set. | |||
|
660 | """ | |||
|
661 | return { | |||
|
662 | # The upgrade code does not yet support these experimental features. | |||
|
663 | # This is an artificial limitation. | |||
|
664 | requirements.TREEMANIFEST_REQUIREMENT, | |||
|
665 | # This was a precursor to generaldelta and was never enabled by default. | |||
|
666 | # It should (hopefully) not exist in the wild. | |||
|
667 | b'parentdelta', | |||
|
668 | # Upgrade should operate on the actual store, not the shared link. | |||
|
669 | requirements.SHARED_REQUIREMENT, | |||
|
670 | } | |||
|
671 | ||||
|
672 | ||||
670 | def check_source_requirements(repo): |
|
673 | def check_source_requirements(repo): | |
671 | """Ensure that no existing requirements prevent the repository upgrade""" |
|
674 | """Ensure that no existing requirements prevent the repository upgrade""" | |
672 |
|
675 | |||
673 | required = requiredsourcerequirements(repo) |
|
676 | required = requiredsourcerequirements(repo) | |
674 | missingreqs = required - repo.requirements |
|
677 | missingreqs = required - repo.requirements | |
675 | if missingreqs: |
|
678 | if missingreqs: | |
676 | msg = _(b'cannot upgrade repository; requirement missing: %s') |
|
679 | msg = _(b'cannot upgrade repository; requirement missing: %s') | |
677 | missingreqs = b', '.join(sorted(missingreqs)) |
|
680 | missingreqs = b', '.join(sorted(missingreqs)) | |
678 | raise error.Abort(msg % missingreqs) |
|
681 | raise error.Abort(msg % missingreqs) | |
679 |
|
682 | |||
680 | blocking = blocksourcerequirements(repo) |
|
683 | blocking = blocksourcerequirements(repo) | |
681 | blockingreqs = blocking & repo.requirements |
|
684 | blockingreqs = blocking & repo.requirements | |
682 | if blockingreqs: |
|
685 | if blockingreqs: | |
683 | m = _(b'cannot upgrade repository; unsupported source requirement: %s') |
|
686 | m = _(b'cannot upgrade repository; unsupported source requirement: %s') | |
684 | blockingreqs = b', '.join(sorted(blockingreqs)) |
|
687 | blockingreqs = b', '.join(sorted(blockingreqs)) | |
685 | raise error.Abort(m % blockingreqs) |
|
688 | raise error.Abort(m % blockingreqs) |
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