summaryrefslogtreecommitdiff
path: root/app/models/commit.rb
blob: bf168aaacc5a727666123ff44892dfae00989696 (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
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
# frozen_string_literal: true

class Commit
  extend ActiveModel::Naming
  extend Gitlab::Cache::RequestCache

  include ActiveModel::Conversion
  include Noteable
  include Participable
  include Mentionable
  include Referable
  include StaticModel
  include Presentable
  include ::Gitlab::Utils::StrongMemoize
  include ActsAsPaginatedDiff
  include CacheMarkdownField

  attr_mentionable :safe_message, pipeline: :single_line

  participant :author
  participant :committer
  participant :notes_with_associations

  attr_accessor :redacted_description_html
  attr_accessor :redacted_title_html
  attr_accessor :redacted_full_title_html
  attr_reader :container

  delegate :repository, to: :container
  delegate :project, to: :repository, allow_nil: true

  MIN_SHA_LENGTH = Gitlab::Git::Commit::MIN_SHA_LENGTH
  COMMIT_SHA_PATTERN = /\h{#{MIN_SHA_LENGTH},40}/.freeze
  EXACT_COMMIT_SHA_PATTERN = /\A#{COMMIT_SHA_PATTERN}\z/.freeze
  # Used by GFM to match and present link extensions on node texts and hrefs.
  LINK_EXTENSION_PATTERN = /(patch)/.freeze

  cache_markdown_field :title, pipeline: :single_line
  cache_markdown_field :full_title, pipeline: :single_line, limit: 1.kilobyte
  cache_markdown_field :description, pipeline: :commit_description, limit: 1.megabyte

  class << self
    def decorate(commits, container)
      commits.map do |commit|
        if commit.is_a?(Commit)
          commit
        else
          self.new(commit, container)
        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

    def order_by(collection:, order_by:, sort:)
      return collection unless %w[email name commits].include?(order_by)
      return collection unless %w[asc desc].include?(sort)

      collection.sort do |a, b|
        operands = [a, b].tap { |o| o.reverse! if sort == 'desc' }

        attr1, attr2 = operands.first.public_send(order_by), operands.second.public_send(order_by) # rubocop:disable PublicSend

        # use case insensitive comparison for string values
        order_by.in?(%w[email name]) ? attr1.casecmp(attr2) : attr1 <=> attr2
      end
    end

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

    def diff_safe_lines(project: nil)
      Gitlab::Git::DiffCollection.default_limits(project: project)[:max_lines]
    end

    def diff_hard_limit_files(project: nil)
      if Feature.enabled?(:increased_diff_limits, project)
        3000
      else
        1000
      end
    end

    def diff_hard_limit_lines(project: nil)
      if Feature.enabled?(:increased_diff_limits, project)
        100000
      else
        50000
      end
    end

    def max_diff_options(project: nil)
      {
        max_files: diff_hard_limit_files(project: project),
        max_lines: diff_hard_limit_lines(project: project)
      }
    end

    def from_hash(hash, container)
      raw_commit = Gitlab::Git::Commit.new(container.repository.raw, hash)
      new(raw_commit, container)
    end

    def valid_hash?(key)
      !!(EXACT_COMMIT_SHA_PATTERN =~ key)
    end

    def lazy(container, oid)
      BatchLoader.for({ container: container, oid: oid }).batch(replace_methods: false) do |items, loader|
        items_by_container = items.group_by { |i| i[:container] }

        items_by_container.each do |container, commit_ids|
          oids = commit_ids.map { |i| i[:oid] }

          container.repository.commits_by(oids: oids).each do |commit|
            loader.call({ container: commit.container, oid: commit.id }, commit) if commit
          end
        end
      end
    end

    def parent_class
      ::Project
    end
  end

  attr_accessor :raw

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

    @raw = raw_commit
    @container = container
  end

  delegate \
    :pipelines,
    :last_pipeline,
    :latest_pipeline,
    :latest_pipeline_for_project,
    :set_latest_pipeline_for_ref,
    :status,
    to: :with_pipeline

  def with_pipeline
    @with_pipeline ||= Ci::CommitWithPipeline.new(self)
  end

  def id
    raw.id
  end

  def project_id
    project&.id
  end

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

  def self.reference_prefix
    '@'
  end

  def self.reference_valid?(reference)
    !!(reference =~ EXACT_COMMIT_SHA_PATTERN)
  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>#{COMMIT_SHA_PATTERN})
    }x
  end

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

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

  def reference_link_text(from = nil, full: false)
    commit_reference(from, 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

    # Use three dots instead of the ellipsis Unicode character because
    # some clients show the raw Unicode value in the merge commit.
    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(/[\r\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
    return no_commit_message if safe_message.blank?

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

  def description?
    description.present?
  end

  def timestamp
    committed_date.xmlschema
  end

  def hook_attrs(with_changed_files: false)
    data = {
      id: id,
      message: safe_message,
      title: title,
      timestamp: timestamp,
      url: Gitlab::UrlBuilder.build(self),
      author: {
        name: author_name,
        email: author_email
      }
    }

    if with_changed_files
      data.merge!(repo_changes)
    end

    data
  end

  def lazy_author
    BatchLoader.for(author_email.downcase).batch do |emails, loader|
      users = User.by_any_email(emails, confirmed: true).includes(:emails)

      emails.each do |email|
        user = users.find { |u| u.any_email?(email) }

        loader.call(email, user)
      end
    end
  end

  def author
    strong_memoize(:author) do
      lazy_author&.itself
    end
  end
  request_cache(:author) { author_email.downcase }

  def committer(confirmed: true)
    @committer ||= User.find_by_any_email(committer_email, confirmed: confirmed)
  end

  def parents
    @parents ||= parent_ids.map { |oid| Commit.lazy(container, oid) }
  end

  def parent
    strong_memoize(:parent) do
      container.commit_by(oid: self.parent_id) if self.parent_id
    end
  end

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

  def user_mentions
    CommitUserMention.where(commit_id: self.id)
  end

  def discussion_notes
    notes.non_diff_notes
  end

  def notes_with_associations
    notes.includes(:author, :award_emoji)
  end

  def method_missing(method, *args, &block)
    @raw.__send__(method, *args, &block) # rubocop:disable GitlabSecurity/PublicSend
  end

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

  def short_id
    @raw.short_id(MIN_SHA_LENGTH)
  end

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

  def has_signature?
    signature_type && signature_type != :NONE
  end

  def raw_signature_type
    strong_memoize(:raw_signature_type) do
      next unless @raw.instance_of?(Gitlab::Git::Commit)

      if raw_commit_from_rugged? && gpg_commit.signature_text.present?
        :PGP
      elsif defined? @raw.raw_commit.signature_type
        @raw.raw_commit.signature_type
      end
    end
  end

  def signature_type
    @signature_type ||= raw_signature_type || :NONE
  end

  def signature
    strong_memoize(:signature) do
      case signature_type
      when :PGP
        gpg_commit.signature
      when :X509
        Gitlab::X509::Commit.new(self).signature
      else
        nil
      end
    end
  end

  def raw_commit_from_rugged?
    @raw.raw_commit.is_a?(Rugged::Commit)
  end

  def gpg_commit
    @gpg_commit ||= Gitlab::Gpg::Commit.new(self)
  end

  def revert_branch_name
    "revert-#{short_id}"
  end

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

  def cherry_pick_description(user)
    message_body = ["(cherry picked from commit #{sha})"]

    if merged_merge_request?(user)
      commits_in_merge_request = merged_merge_request(user).commits

      if commits_in_merge_request.present?
        message_body << ""

        commits_in_merge_request.reverse_each do |commit_in_merge|
          message_body << "#{commit_in_merge.short_id} #{commit_in_merge.title}"
        end
      end
    end

    message_body.join("\n")
  end

  def cherry_pick_message(user)
    %Q{#{message}\n\n#{cherry_pick_description(user)}}
  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?
    parent_ids.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, notes_association = nil)
    ext = Gitlab::ReferenceExtractor.new(project, current_user)
    notes_association ||= notes_with_associations

    notes_association.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_entry(path)
    return unless entry

    if entry[:type] == :blob
      blob = ::Blob.decorate(Gitlab::Git::Blob.new(name: entry[:name]), container)
      blob.image? || blob.video? || blob.audio? ? :raw : :blob
    else
      entry[:type]
    end
  end

  def raw_diffs(*args)
    raw.diffs(*args)
  end

  def raw_deltas
    @deltas ||= raw.deltas
  end

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

  def persisted?
    true
  end

  def to_ability_name
    model_name.singular
  end

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

  def touch_later
    # No-op.
    # This method is called by ActiveRecord.
    # We don't want to do anything for `Commit` model, so this is empty.
  end

  # WIP is deprecated in favor of Draft. Currently both options are supported
  # https://gitlab.com/gitlab-org/gitlab/-/issues/227426
  DRAFT_REGEX = /\A\s*#{Regexp.union(Gitlab::Regex.merge_request_wip, Gitlab::Regex.merge_request_draft)}|(fixup!|squash!)\s/.freeze

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

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

  def cache_key
    "commit:#{sha}"
  end

  def expire_note_etag_cache
    super

    expire_note_etag_cache_for_related_mrs
  end

  private

  def expire_note_etag_cache_for_related_mrs
    MergeRequest.includes(target_project: :namespace).by_commit_sha(id).find_each do |mr|
      mr.expire_note_etag_cache
    end
  end

  def commit_reference(from, referable_commit_id, full: false)
    base = container.to_reference_base(from, full: full)

    if base.present?
      "#{base}#{self.class.reference_prefix}#{referable_commit_id}"
    else
      referable_commit_id
    end
  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_no_cache(user)
    MergeRequestsFinder.new(user, project_id: project_id).find_by(merge_commit_sha: id) if merge_commit?
  end
end