summaryrefslogtreecommitdiff
path: root/app/models/commit.rb
blob: 23b771aebb7694bcc274b61c7ab2e7a17c411570 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
class Commit
  extend ActiveModel::Naming

  include ActiveModel::Conversion
  include Participable
  include Mentionable
  include Referable
  include StaticModel

  attr_mentionable :safe_message, pipeline: :single_line
  participant :author, :committer, :notes

  attr_accessor :project

  # Safe amount of changes (files and lines) in one commit to render
  # Used to prevent 500 error on huge commits by suppressing diff
  #
  # User can force display of diff above this size
  DIFF_SAFE_FILES  = 100 unless defined?(DIFF_SAFE_FILES)
  DIFF_SAFE_LINES  = 5000 unless defined?(DIFF_SAFE_LINES)

  # Commits above this size will not be rendered in HTML
  DIFF_HARD_LIMIT_FILES = 1000 unless defined?(DIFF_HARD_LIMIT_FILES)
  DIFF_HARD_LIMIT_LINES = 50000 unless defined?(DIFF_HARD_LIMIT_LINES)

  class << self
    def decorate(commits, project)
      commits.map do |commit|
        if commit.kind_of?(Commit)
          commit
        else
          self.new(commit, project)
        end
      end
    end

    # Calculate number of lines to render for diffs
    def diff_line_count(diffs)
      diffs.reduce(0) { |sum, d| sum + d.diff.lines.count }
    end

    # Truncate sha to 8 characters
    def truncate_sha(sha)
      sha[0..7]
    end
  end

  attr_accessor :raw

  def initialize(raw_commit, project)
    raise "Nil as raw commit passed" unless raw_commit

    @raw = raw_commit
    @project = project
  end

  def id
    @raw.id
  end

  def ==(other)
    (self.class === other) && (raw == other.raw)
  end

  def self.reference_prefix
    '@'
  end

  # Pattern used to extract commit references from text
  #
  # The SHA can be between 7 and 40 hex characters.
  #
  # This pattern supports cross-project references.
  def self.reference_pattern
    %r{
      (?:#{Project.reference_pattern}#{reference_prefix})?
      (?<commit>\h{7,40})
    }x
  end

  def self.link_reference_pattern
    super("commit", /(?<commit>\h{7,40})/)
  end

  def to_reference(from_project = nil)
    if cross_project_reference?(from_project)
      project.to_reference + self.class.reference_prefix + self.id
    else
      self.id
    end
  end

  def reference_link_text(from_project = nil)
    if cross_project_reference?(from_project)
      project.to_reference + self.class.reference_prefix + self.short_id
    else
      self.short_id
    end
  end

  def diff_line_count
    @diff_line_count ||= Commit::diff_line_count(self.diffs)
    @diff_line_count
  end

  # Returns a string describing the commit for use in a link title
  #
  # Example
  #
  #   "Commit: Alex Denisov - Project git clone panel"
  def link_title
    "Commit: #{author_name} - #{title}"
  end

  # Returns the commits title.
  #
  # Usually, the commit title is the first line of the commit message.
  # In case this first line is longer than 100 characters, it is cut off
  # after 80 characters and ellipses (`&hellp;`) are appended.
  def title
    title = safe_message

    return no_commit_message if title.blank?

    title_end = title.index("\n")
    if (!title_end && title.length > 100) || (title_end && title_end > 100)
      title[0..79] << "…"
    else
      title.split("\n", 2).first
    end
  end

  # Returns the commits description
  #
  # cut off, ellipses (`&hellp;`) are prepended to the commit message.
  def description
    title_end = safe_message.index("\n")
    @description ||=
      if (!title_end && safe_message.length > 100) || (title_end && title_end > 100)
        "…" << safe_message[80..-1]
      else
        safe_message.split("\n", 2)[1].try(:chomp)
      end
  end

  def description?
    description.present?
  end

  def hook_attrs(with_changed_files: false)
    path_with_namespace = project.path_with_namespace

    data = {
      id: id,
      message: safe_message,
      timestamp: committed_date.xmlschema,
      url: "#{Gitlab.config.gitlab.url}/#{path_with_namespace}/commit/#{id}",
      author: {
        name: author_name,
        email: author_email
      }
    }

    if with_changed_files
      data.merge!(repo_changes)
    end

    data
  end

  # Discover issues should be closed when this commit is pushed to a project's
  # default branch.
  def closes_issues(current_user = self.committer)
    Gitlab::ClosingIssueExtractor.new(project, current_user).closed_by_message(safe_message)
  end

  def author
    @author ||= User.find_by_any_email(author_email.downcase)
  end

  def committer
    @committer ||= User.find_by_any_email(committer_email.downcase)
  end

  def parents
    @parents ||= parent_ids.map { |id| project.commit(id) }
  end

  def parent
    @parent ||= project.commit(self.parent_id) if self.parent_id
  end

  def notes
    project.notes.for_commit_id(self.id)
  end

  def method_missing(m, *args, &block)
    @raw.send(m, *args, &block)
  end

  def respond_to_missing?(method, include_private = false)
    @raw.respond_to?(method, include_private) || super
  end

  # Truncate sha to 8 characters
  def short_id
    @raw.short_id(7)
  end

  def ci_commit
    project.ci_commit(sha)
  end

  def status
    ci_commit.try(:status) || :not_found
  end

  private

  def repo_changes
    changes = { added: [], modified: [], removed: [] }

    diffs.each do |diff|
      if diff.deleted_file
        changes[:removed] << diff.old_path
      elsif diff.renamed_file || diff.new_file
        changes[:added] << diff.new_path
      else
        changes[:modified] << diff.new_path
      end
    end

    changes
  end
end