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1 | 1 | # Redmine - project management software |
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2 | 2 | # Copyright (C) 2006-2015 Jean-Philippe Lang |
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3 | 3 | # Copyright (C) 2007 Patrick Aljord patcito@ŋmail.com |
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4 | 4 | # |
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5 | 5 | # This program is free software; you can redistribute it and/or |
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6 | 6 | # modify it under the terms of the GNU General Public License |
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7 | 7 | # as published by the Free Software Foundation; either version 2 |
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8 | 8 | # of the License, or (at your option) any later version. |
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9 | 9 | # |
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10 | 10 | # This program is distributed in the hope that it will be useful, |
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11 | 11 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | 13 | # GNU General Public License for more details. |
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14 | 14 | # |
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15 | 15 | # You should have received a copy of the GNU General Public License |
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16 | 16 | # along with this program; if not, write to the Free Software |
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17 | 17 | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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18 | 18 | |
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19 | 19 | require 'redmine/scm/adapters/git_adapter' |
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20 | 20 | |
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21 | 21 | class Repository::Git < Repository |
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22 | 22 | attr_protected :root_url |
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23 | 23 | validates_presence_of :url |
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24 | 24 | |
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25 | 25 | def self.human_attribute_name(attribute_key_name, *args) |
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26 | 26 | attr_name = attribute_key_name.to_s |
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27 | 27 | if attr_name == "url" |
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28 | 28 | attr_name = "path_to_repository" |
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29 | 29 | end |
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30 | 30 | super(attr_name, *args) |
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31 | 31 | end |
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32 | 32 | |
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33 | 33 | def self.scm_adapter_class |
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34 | 34 | Redmine::Scm::Adapters::GitAdapter |
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35 | 35 | end |
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36 | 36 | |
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37 | 37 | def self.scm_name |
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38 | 38 | 'Git' |
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39 | 39 | end |
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40 | 40 | |
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41 | 41 | def report_last_commit |
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42 | 42 | extra_report_last_commit |
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43 | 43 | end |
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44 | 44 | |
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45 | 45 | def extra_report_last_commit |
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46 | 46 | return false if extra_info.nil? |
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47 | 47 | v = extra_info["extra_report_last_commit"] |
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48 | 48 | return false if v.nil? |
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49 | 49 | v.to_s != '0' |
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50 | 50 | end |
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51 | 51 | |
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52 | 52 | def supports_directory_revisions? |
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53 | 53 | true |
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54 | 54 | end |
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55 | 55 | |
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56 | 56 | def supports_revision_graph? |
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57 | 57 | true |
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58 | 58 | end |
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59 | 59 | |
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60 | 60 | def repo_log_encoding |
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61 | 61 | 'UTF-8' |
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62 | 62 | end |
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63 | 63 | |
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64 | 64 | # Returns the identifier for the given git changeset |
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65 | 65 | def self.changeset_identifier(changeset) |
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66 | 66 | changeset.scmid |
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67 | 67 | end |
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68 | 68 | |
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69 | 69 | # Returns the readable identifier for the given git changeset |
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70 | 70 | def self.format_changeset_identifier(changeset) |
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71 | 71 | changeset.revision[0, 8] |
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72 | 72 | end |
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73 | 73 | |
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74 | 74 | def branches |
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75 | 75 | scm.branches |
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76 | 76 | end |
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77 | 77 | |
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78 | 78 | def tags |
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79 | 79 | scm.tags |
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80 | 80 | end |
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81 | 81 | |
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82 | 82 | def default_branch |
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83 | 83 | scm.default_branch |
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84 | 84 | rescue Exception => e |
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85 | 85 | logger.error "git: error during get default branch: #{e.message}" |
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86 | 86 | nil |
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87 | 87 | end |
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88 | 88 | |
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89 | 89 | def find_changeset_by_name(name) |
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90 | 90 | if name.present? |
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91 | 91 | changesets.where(:revision => name.to_s).first || |
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92 | 92 | changesets.where('scmid LIKE ?', "#{name}%").first |
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93 | 93 | end |
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94 | 94 | end |
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95 | 95 | |
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96 | 96 | def scm_entries(path=nil, identifier=nil) |
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97 | 97 | scm.entries(path, identifier, :report_last_commit => extra_report_last_commit) |
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98 | 98 | end |
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99 | 99 | protected :scm_entries |
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100 | 100 | |
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101 | 101 | # With SCMs that have a sequential commit numbering, |
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102 | 102 | # such as Subversion and Mercurial, |
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103 | 103 | # Redmine is able to be clever and only fetch changesets |
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104 | 104 | # going forward from the most recent one it knows about. |
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105 | 105 | # |
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106 | 106 | # However, Git does not have a sequential commit numbering. |
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107 | 107 | # |
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108 | 108 | # In order to fetch only new adding revisions, |
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109 | 109 | # Redmine needs to save "heads". |
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110 | 110 | # |
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111 | 111 | # In Git and Mercurial, revisions are not in date order. |
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112 | 112 | # Redmine Mercurial fixed issues. |
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113 | 113 | # * Redmine Takes Too Long On Large Mercurial Repository |
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114 | 114 | # http://www.redmine.org/issues/3449 |
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115 | 115 | # * Sorting for changesets might go wrong on Mercurial repos |
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116 | 116 | # http://www.redmine.org/issues/3567 |
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117 | 117 | # |
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118 | 118 | # Database revision column is text, so Redmine can not sort by revision. |
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119 | 119 | # Mercurial has revision number, and revision number guarantees revision order. |
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120 | 120 | # Redmine Mercurial model stored revisions ordered by database id to database. |
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121 | 121 | # So, Redmine Mercurial model can use correct ordering revisions. |
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122 | 122 | # |
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123 | 123 | # Redmine Mercurial adapter uses "hg log -r 0:tip --limit 10" |
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124 | 124 | # to get limited revisions from old to new. |
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125 | 125 | # But, Git 1.7.3.4 does not support --reverse with -n or --skip. |
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126 | 126 | # |
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127 | 127 | # The repository can still be fully reloaded by calling #clear_changesets |
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128 | 128 | # before fetching changesets (eg. for offline resync) |
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129 | 129 | def fetch_changesets |
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130 | 130 | scm_brs = branches |
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131 | 131 | return if scm_brs.nil? || scm_brs.empty? |
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132 | 132 | |
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133 | 133 | h1 = extra_info || {} |
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134 | 134 | h = h1.dup |
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135 | 135 | repo_heads = scm_brs.map{ |br| br.scmid } |
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136 | 136 | h["heads"] ||= [] |
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137 | 137 | prev_db_heads = h["heads"].dup |
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138 | 138 | if prev_db_heads.empty? |
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139 | 139 | prev_db_heads += heads_from_branches_hash |
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140 | 140 | end |
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141 | 141 | return if prev_db_heads.sort == repo_heads.sort |
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142 | 142 | |
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143 | 143 | h["db_consistent"] ||= {} |
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144 | 144 | if changesets.count == 0 |
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145 | 145 | h["db_consistent"]["ordering"] = 1 |
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146 | 146 | merge_extra_info(h) |
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147 | 147 | self.save |
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148 | 148 | elsif ! h["db_consistent"].has_key?("ordering") |
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149 | 149 | h["db_consistent"]["ordering"] = 0 |
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150 | 150 | merge_extra_info(h) |
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151 | 151 | self.save |
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152 | 152 | end |
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153 | 153 | save_revisions(prev_db_heads, repo_heads) |
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154 | 154 | end |
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155 | 155 | |
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156 | 156 | def save_revisions(prev_db_heads, repo_heads) |
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157 | 157 | h = {} |
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158 | 158 | opts = {} |
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159 | 159 | opts[:reverse] = true |
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160 | 160 | opts[:excludes] = prev_db_heads |
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161 | 161 | opts[:includes] = repo_heads |
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162 | 162 | |
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163 | 163 | revisions = scm.revisions('', nil, nil, opts) |
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164 | 164 | return if revisions.blank? |
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165 | 165 | |
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166 | 166 | # Make the search for existing revisions in the database in a more sufficient manner |
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167 | 167 | # |
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168 | 168 | # Git branch is the reference to the specific revision. |
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169 | 169 | # Git can *delete* remote branch and *re-push* branch. |
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170 | 170 | # |
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171 | 171 | # $ git push remote :branch |
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172 | 172 | # $ git push remote branch |
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173 | 173 | # |
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174 | 174 | # After deleting branch, revisions remain in repository until "git gc". |
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175 | 175 | # On git 1.7.2.3, default pruning date is 2 weeks. |
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176 | 176 | # So, "git log --not deleted_branch_head_revision" return code is 0. |
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177 | 177 | # |
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178 | 178 | # After re-pushing branch, "git log" returns revisions which are saved in database. |
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179 | 179 | # So, Redmine needs to scan revisions and database every time. |
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180 | 180 | # |
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181 | 181 | # This is replacing the one-after-one queries. |
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182 | 182 | # Find all revisions, that are in the database, and then remove them |
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183 | 183 | # from the revision array. |
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184 | 184 | # Then later we won't need any conditions for db existence. |
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185 | 185 | # Query for several revisions at once, and remove them |
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186 | 186 | # from the revisions array, if they are there. |
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187 | 187 | # Do this in chunks, to avoid eventual memory problems |
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188 | 188 | # (in case of tens of thousands of commits). |
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189 | 189 | # If there are no revisions (because the original code's algorithm filtered them), |
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190 | 190 | # then this part will be stepped over. |
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191 | 191 | # We make queries, just if there is any revision. |
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192 | 192 | limit = 100 |
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193 | 193 | offset = 0 |
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194 | 194 | revisions_copy = revisions.clone # revisions will change |
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195 | 195 | while offset < revisions_copy.size |
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196 | 196 | scmids = revisions_copy.slice(offset, limit).map{|x| x.scmid} |
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197 | 197 | recent_changesets_slice = changesets.where(:scmid => scmids) |
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198 | 198 | # Subtract revisions that redmine already knows about |
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199 | 199 | recent_revisions = recent_changesets_slice.map{|c| c.scmid} |
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200 | 200 | revisions.reject!{|r| recent_revisions.include?(r.scmid)} |
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201 | 201 | offset += limit |
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202 | 202 | end |
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203 | 203 | revisions.each do |rev| |
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204 | 204 | transaction do |
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205 | 205 | # There is no search in the db for this revision, because above we ensured, |
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206 | 206 | # that it's not in the db. |
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207 | 207 | save_revision(rev) |
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208 | 208 | end |
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209 | 209 | end |
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210 | 210 | h["heads"] = repo_heads.dup |
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211 | 211 | merge_extra_info(h) |
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212 | self.save | |
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212 | save(:validate => false) | |
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213 | 213 | end |
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214 | 214 | private :save_revisions |
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215 | 215 | |
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216 | 216 | def save_revision(rev) |
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217 | 217 | parents = (rev.parents || []).collect{|rp| find_changeset_by_name(rp)}.compact |
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218 | 218 | changeset = Changeset.create( |
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219 | 219 | :repository => self, |
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220 | 220 | :revision => rev.identifier, |
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221 | 221 | :scmid => rev.scmid, |
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222 | 222 | :committer => rev.author, |
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223 | 223 | :committed_on => rev.time, |
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224 | 224 | :comments => rev.message, |
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225 | 225 | :parents => parents |
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226 | 226 | ) |
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227 | 227 | unless changeset.new_record? |
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228 | 228 | rev.paths.each { |change| changeset.create_change(change) } |
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229 | 229 | end |
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230 | 230 | changeset |
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231 | 231 | end |
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232 | 232 | private :save_revision |
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233 | 233 | |
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234 | 234 | def heads_from_branches_hash |
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235 | 235 | h1 = extra_info || {} |
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236 | 236 | h = h1.dup |
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237 | 237 | h["branches"] ||= {} |
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238 | 238 | h['branches'].map{|br, hs| hs['last_scmid']} |
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239 | 239 | end |
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240 | 240 | |
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241 | 241 | def latest_changesets(path,rev,limit=10) |
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242 | 242 | revisions = scm.revisions(path, nil, rev, :limit => limit, :all => false) |
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243 | 243 | return [] if revisions.nil? || revisions.empty? |
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244 | 244 | changesets.where(:scmid => revisions.map {|c| c.scmid}).to_a |
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245 | 245 | end |
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246 | 246 | |
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247 | 247 | def clear_extra_info_of_changesets |
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248 | 248 | return if extra_info.nil? |
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249 | 249 | v = extra_info["extra_report_last_commit"] |
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250 | 250 | write_attribute(:extra_info, nil) |
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251 | 251 | h = {} |
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252 | 252 | h["extra_report_last_commit"] = v |
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253 | 253 | merge_extra_info(h) |
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254 | self.save | |
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254 | save(:validate => false) | |
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255 | 255 | end |
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256 | 256 | private :clear_extra_info_of_changesets |
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257 | 257 | |
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258 | 258 | def clear_changesets |
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259 | 259 | super |
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260 | 260 | clear_extra_info_of_changesets |
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261 | 261 | end |
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262 | 262 | private :clear_changesets |
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263 | 263 | end |
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