summaryrefslogtreecommitdiff
path: root/app/models/commit.rb
blob: 20206d57c4c1cbb315e760174ed6227a0072c6da (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
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
class Commit
  extend ActiveModel::Naming

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

  attr_mentionable :safe_message, pipeline: :single_line

  participant :author
  participant :committer
  participant :notes_with_associations

  attr_accessor :project, :author

  DIFF_SAFE_LINES = Gitlab::Git::DiffCollection::DEFAULT_LIMITS[:max_lines]

  # Commits above this size will not be rendered in HTML
  DIFF_HARD_LIMIT_FILES = 1000
  DIFF_HARD_LIMIT_LINES = 50000

  # The SHA can be between 7 and 40 hex characters.
  COMMIT_SHA_PATTERN = '\h{7,40}'.freeze

  class << self
    def decorate(commits, project)
      commits.map do |commit|
        if commit.is_a?(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 + Gitlab::Git::Util.count_lines(d.diff) }
    end

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

    def max_diff_options
      {
        max_files: DIFF_HARD_LIMIT_FILES,
        max_lines: DIFF_HARD_LIMIT_LINES
      }
    end

    def from_hash(hash, project)
      new(Gitlab::Git::Commit.new(hash), project)
    end

    def valid_hash?(key)
      !!(/\A#{COMMIT_SHA_PATTERN}\z/ =~ key)
    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
  #
  # This pattern supports cross-project references.
  def self.reference_pattern
    @reference_pattern ||= %r{
      (?:#{Project.reference_pattern}#{reference_prefix})?
      (?<commit>\h{7,40})
    }x
  end

  def self.link_reference_pattern
    @link_reference_pattern ||= super("commit", /(?<commit>#{COMMIT_SHA_PATTERN})/)
  end

  def to_reference(from_project = nil, full: false)
    commit_reference(from_project, id, full: full)
  end

  def reference_link_text(from_project = nil, full: false)
    commit_reference(from_project, short_id, full: full)
  end

  def diff_line_count
    @diff_line_count ||= Commit.diff_line_count(raw_diffs)
    @diff_line_count
  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 + `...`
  def title
    return full_title if full_title.length < 100

    full_title.truncate(81, separator: ' ', omission: '…')
  end

  # Returns the full commits title
  def full_title
    @full_title ||=
      if safe_message.blank?
        no_commit_message
      else
        safe_message.split("\n", 2).first
      end
  end

  # Returns full commit message if title is truncated (greater than 99 characters)
  # otherwise returns commit message without first line
  def description
    return safe_message if full_title.length >= 100

    safe_message.split("\n", 2)[1].try(:chomp)
  end
  
  def description?
    description.present?
  end

  def hook_attrs(with_changed_files: false)
    data = {
      id: id,
      message: safe_message,
      timestamp: committed_date.xmlschema,
      url: Gitlab::UrlBuilder.build(self),
      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
    if RequestStore.active?
      key = "commit_author:#{author_email.downcase}"
      # nil is a valid value since no author may exist in the system
      if RequestStore.store.key?(key)
        @author = RequestStore.store[key]
      else
        @author = find_author_by_any_email
        RequestStore.store[key] = @author
      end
    else
      @author ||= find_author_by_any_email
    end
  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 discussion_notes
    notes.non_diff_notes
  end

  def notes_with_associations
    notes.includes(:author)
  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 diff_refs
    Gitlab::Diff::DiffRefs.new(
      base_sha: self.parent_id || Gitlab::Git::BLANK_SHA,
      head_sha: self.sha
    )
  end

  def pipelines
    project.pipelines.where(sha: sha)
  end

  def last_pipeline
    @last_pipeline ||= pipelines.last
  end

  def status(ref = nil)
    @statuses ||= {}

    return @statuses[ref] if @statuses.key?(ref)

    @statuses[ref] = pipelines.latest_status(ref)
  end

  def revert_branch_name
    "revert-#{short_id}"
  end

  def cherry_pick_branch_name
    project.repository.next_branch("cherry-pick-#{short_id}", mild: true)
  end

  def revert_description(user)
    if merged_merge_request?(user)
      "This reverts merge request #{merged_merge_request(user).to_reference}"
    else
      "This reverts commit #{sha}"
    end
  end

  def revert_message(user)
    %Q{Revert "#{title.strip}"\n\n#{revert_description(user)}}
  end

  def reverts_commit?(commit, user)
    description? && description.include?(commit.revert_description(user))
  end

  def merge_commit?
    parents.size > 1
  end

  def merged_merge_request(current_user)
    # Memoize with per-user access check
    @merged_merge_request_hash ||= Hash.new do |hash, user|
      hash[user] = merged_merge_request_no_cache(user)
    end

    @merged_merge_request_hash[current_user]
  end

  def has_been_reverted?(current_user, noteable = self)
    ext = all_references(current_user)

    noteable.notes_with_associations.system.each do |note|
      note.all_references(current_user, extractor: ext)
    end

    ext.commits.any? { |commit_ref| commit_ref.reverts_commit?(self, current_user) }
  end

  def change_type_title(user)
    merged_merge_request?(user) ? 'merge request' : 'commit'
  end

  # Get the URI type of the given path
  #
  # Used to build URLs to files in the repository in GFM.
  #
  # path - String path to check
  #
  # Examples:
  #
  #   uri_type('doc/README.md') # => :blob
  #   uri_type('doc/logo.png')  # => :raw
  #   uri_type('doc/api')       # => :tree
  #   uri_type('not/found')     # => :nil
  #
  # Returns a symbol
  def uri_type(path)
    entry = @raw.tree.path(path)
    if entry[:type] == :blob
      blob = ::Blob.decorate(Gitlab::Git::Blob.new(name: entry[:name]), @project)
      blob.image? || blob.video? ? :raw : :blob
    else
      entry[:type]
    end
  rescue Rugged::TreeError
    nil
  end

  def raw_diffs(*args)
    if Gitlab::GitalyClient.feature_enabled?(:commit_raw_diffs)
      Gitlab::GitalyClient::Commit.new(project.repository).diff_from_parent(self, *args)
    else
      raw.diffs(*args)
    end
  end

  def raw_deltas
    @deltas ||= Gitlab::GitalyClient.migrate(:commit_deltas) do |is_enabled|
      if is_enabled
        Gitlab::GitalyClient::Commit.new(project.repository).commit_deltas(self)
      else
        raw.deltas
      end
    end
  end

  def diffs(diff_options = nil)
    Gitlab::Diff::FileCollection::Commit.new(self, diff_options: diff_options)
  end

  def persisted?
    true
  end

  def touch
    # no-op but needs to be defined since #persisted? is defined
  end

  WIP_REGEX = /\A\s*(((?i)(\[WIP\]|WIP:|WIP)\s|WIP$))|(fixup!|squash!)\s/.freeze

  def work_in_progress?
    !!(title =~ WIP_REGEX)
  end

  private

  def commit_reference(from_project, referable_commit_id, full: false)
    reference = project.to_reference(from_project, full: full)

    if reference.present?
      "#{reference}#{self.class.reference_prefix}#{referable_commit_id}"
    else
      referable_commit_id
    end
  end

  def find_author_by_any_email
    User.find_by_any_email(author_email.downcase)
  end

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

    raw_deltas.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

  def merged_merge_request?(user)
    !!merged_merge_request(user)
  end

  def merged_merge_request_no_cache(user)
    MergeRequestsFinder.new(user, project_id: project.id).find_by(merge_commit_sha: id) if merge_commit?
  end
end