Class: MergeRequest

Defined Under Namespace

Classes: CleanupSchedule, DiffCommitUser, Metrics, MetricsFinder

Constant Summary collapse

SORTING_PREFERENCE_FIELD =
:merge_requests_sort
ALLOWED_TO_USE_MERGE_BASE_PIPELINE_FOR_COMPARISON =
{
  'Ci::CompareMetricsReportsService'     => ->(project) { true },
  'Ci::CompareCodequalityReportsService' => ->(project) { true }
}.freeze
KNOWN_MERGE_PARAMS =
[
  :auto_merge_strategy,
  :should_remove_source_branch,
  :force_remove_source_branch,
  :commit_message,
  :squash_commit_message,
  :sha
].freeze
RebaseLockTimeout =
Class.new(StandardError)
DRAFT_REGEX =
/\A*#{Gitlab::Regex.merge_request_draft}+\s*/i.freeze

Constants included from ReactiveCaching

ReactiveCaching::ExceededReactiveCacheLimit, ReactiveCaching::InvalidateReactiveCache, ReactiveCaching::WORK_TYPE

Constants included from ThrottledTouch

ThrottledTouch::TOUCH_INTERVAL

Constants included from Noteable

Noteable::MAX_NOTES_LIMIT

Constants included from Issuable

Issuable::DESCRIPTION_HTML_LENGTH_MAX, Issuable::DESCRIPTION_LENGTH_MAX, Issuable::SEARCHABLE_FIELDS, Issuable::STATE_ID_MAP, Issuable::TITLE_HTML_LENGTH_MAX, Issuable::TITLE_LENGTH_MAX

Constants included from Taskable

Taskable::COMPLETED, Taskable::COMPLETE_PATTERN, Taskable::INCOMPLETE, Taskable::INCOMPLETE_PATTERN, Taskable::ITEM_PATTERN

Constants included from CacheMarkdownField

CacheMarkdownField::INVALIDATED_BY

Constants included from Redactable

Redactable::UNSUBSCRIBE_PATTERN

Constants included from Gitlab::SQL::Pattern

Gitlab::SQL::Pattern::MIN_CHARS_FOR_PARTIAL_MATCHING, Gitlab::SQL::Pattern::REGEX_QUOTED_WORD

Constants included from AtomicInternalId

AtomicInternalId::MissingValueError

Constants inherited from ApplicationRecord

ApplicationRecord::MAX_PLUCK

Instance Attribute Summary collapse

Attributes included from Noteable

#system_note_timestamp

Attributes included from Importable

#imported, #importing

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Gitlab::Utils::Override

extended, extensions, included, method_added, override, prepended, queue_verification, verify!

Methods included from ApprovableBase

#approved_by?, #can_be_approved_by?, #can_be_unapproved_by?

Methods included from DeprecatedAssignee

#assignee, #assignee=, #assignee_id, #assignee_id=, #assignee_ids, #assignee_ids=, #assignees, #assignees=

Methods included from Gitlab::Utils::StrongMemoize

#clear_memoization, #strong_memoize, #strong_memoized?

Methods included from ThrottledTouch

#touch

Methods included from TimeTrackable

#human_time_change, #human_time_estimate, #human_total_time_spent, #spend_time, #time_change, #time_estimate=, #total_time_spent

Methods included from Presentable

#present

Methods included from Referable

#referable_inspect, #reference_link_text, #to_reference_base

Methods included from Noteable

#after_note_created, #after_note_destroyed, #base_class_name, #capped_notes_count, #creatable_note_email_address, #discussion_ids_relation, #discussion_root_note_ids, #discussions, #discussions_can_be_resolved_by?, #discussions_resolvable?, #discussions_resolved?, #discussions_to_be_resolved, #expire_note_etag_cache, #grouped_diff_discussions, #has_any_diff_note_positions?, #human_class_name, #lockable?, #note_etag_key, #noteable_target_type_name, #resolvable_discussions, #supports_creating_notes_by_email?, #supports_discussions?, #supports_replying_to_individual_notes?, #supports_resolvable_notes?

Methods included from Issuable

#assignee_list, #assignee_or_author?, #assignee_username_list, #can_assign_epic?, #can_move?, #card_attributes, #created_hours_ago, #hook_association_changes, #label_names, #labels_array, #labels_hook_attrs, #new?, #notes_with_associations, #open?, #overdue?, #resource_parent, #state, #state=, #subscribed_without_subscriptions?, #to_ability_name, #to_hook_data, #today?, #updated_tasks, #user_notes_count

Methods included from AfterCommitQueue

#run_after_commit, #run_after_commit_or_now

Methods included from Editable

#edited?, #last_edited_by

Methods included from Taskable

get_tasks, get_updated_tasks, #task_completion_status, #task_list_items, #task_status, #task_status_short, #tasks, #tasks?

Methods included from Awardable

#awarded_emoji?, #downvotes, #emoji_awardable?, #grouped_awards, #upvotes, #user_authored?, #user_can_award?

Methods included from StripAttribute

#strip_attributes!

Methods included from Subscribable

#lazy_subscription, #set_subscription, #subscribe, #subscribed?, #subscribed_without_subscriptions?, #subscribers, #toggle_subscription, #unsubscribe

Methods included from Milestoneable

#milestone_available?, #supports_milestone?

Methods included from Mentionable

#all_references, #create_cross_references!, #create_new_cross_references!, #directly_addressed_users, #extractors, #gfm_reference, #local_reference, #matches_cross_reference_regex?, #mentioned_users, #referenced_group_users, #referenced_groups, #referenced_mentionables, #referenced_project_users, #referenced_projects, #referenced_users, #user_mention_class, #user_mention_identifier

Methods included from Participable

#participant?, #participants, #visible_participants

Methods included from CacheMarkdownField

#attribute_invalidated?, #cached_html_for, #cached_html_up_to_date?, #can_cache_field?, #invalidated_markdown_cache?, #latest_cached_markdown_version, #local_version, #mentionable_attributes_changed?, #parent_user, #refresh_markdown_cache, #refresh_markdown_cache!, #rendered_field_content, #skip_project_check?, #store_mentions!, #updated_cached_html_for

Methods included from IidRoutes

#to_param

Methods included from AtomicInternalId

group_init, #internal_id_read_scope, #internal_id_scope_attrs, #internal_id_scope_usage, project_init, scope_attrs, scope_usage

Methods inherited from ApplicationRecord

cached_column_list, #create_or_load_association, declarative_enum, default_select_columns, id_in, id_not_in, iid_in, pluck_primary_key, primary_key_in, #readable_by?, safe_ensure_unique, safe_find_or_create_by, safe_find_or_create_by!, #to_ability_name, underscore, where_exists, where_not_exists, with_fast_read_statement_timeout, without_order

Methods included from SensitiveSerializableHash

#serializable_hash

Instance Attribute Details

#allow_brokenObject

When this attribute is true some MR validation is ignored It allows us to close or modify broken merge requests


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# File 'app/models/merge_request.rb', line 138

def allow_broken
  @allow_broken
end

#can_be_createdObject

Temporary fields to store compare vars when creating new merge request


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# File 'app/models/merge_request.rb', line 142

def can_be_created
  @can_be_created
end

#compareObject

Temporary fields to store compare vars when creating new merge request


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# File 'app/models/merge_request.rb', line 142

def compare
  @compare
end

#compare_commitsObject

Temporary fields to store compare vars when creating new merge request


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# File 'app/models/merge_request.rb', line 142

def compare_commits
  @compare_commits
end

#diff_optionsObject

Temporary fields to store compare vars when creating new merge request


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# File 'app/models/merge_request.rb', line 142

def diff_options
  @diff_options
end

#source_branch_shaObject


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# File 'app/models/merge_request.rb', line 905

def source_branch_sha
  @source_branch_sha || source_branch_head.try(:sha)
end

#target_branch_shaObject


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# File 'app/models/merge_request.rb', line 901

def target_branch_sha
  @target_branch_sha || target_branch_head.try(:sha)
end

Class Method Details

.available_state_namesObject

Keep states definition to be evaluated before the state_machine block to avoid spec failures. If this gets evaluated after, the `merged` and `locked` states which are overrided can be nil.


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# File 'app/models/merge_request.rb', line 148

def self.available_state_names
  super + [:merged, :locked]
end

.draft?(title) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 583

def self.draft?(title)
  !!(title =~ DRAFT_REGEX)
end

.draft_title(title) ⇒ Object


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# File 'app/models/merge_request.rb', line 591

def self.draft_title(title)
  draft?(title) ? title : "Draft: #{title}"
end

.draftless_title(title) ⇒ Object


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# File 'app/models/merge_request.rb', line 587

def self.draftless_title(title)
  title.sub(DRAFT_REGEX, "")
end

.in_projects(relation) ⇒ Object

Returns all the merge requests from an ActiveRecord:Relation.

This method uses a UNION as it usually operates on the result of ProjectsFinder#execute. PostgreSQL in particular doesn't always like queries using multiple sub-queries especially when combined with an OR statement. UNIONs on the other hand perform much better in these cases.

relation - An ActiveRecord::Relation that returns a list of Projects.

Returns an ActiveRecord::Relation.


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# File 'app/models/merge_request.rb', line 552

def self.in_projects(relation)
  # unscoping unnecessary conditions that'll be applied
  # when executing `where("merge_requests.id IN (#{union.to_sql})")`
  source = unscoped.where(source_project_id: relation)
  target = unscoped.where(target_project_id: relation)

  from_union([source, target])
end

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# File 'app/models/merge_request.rb', line 530

def self.link_reference_pattern
  @link_reference_pattern ||= super("merge_requests", Gitlab::Regex.merge_request)
end

.merge_request_ref?(ref) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1500

def self.merge_request_ref?(ref)
  ref.start_with?("refs/#{Repository::REF_MERGE_REQUEST}/")
end

.merge_train_ref?(ref) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1504

def self.merge_train_ref?(ref)
  %r{\Arefs/#{Repository::REF_MERGE_REQUEST}/\d+/train\z}.match?(ref)
end

.participant_includesObject


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# File 'app/models/merge_request.rb', line 601

def self.participant_includes
  [:reviewers, :award_emoji] + super
end

.project_foreign_keyObject


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# File 'app/models/merge_request.rb', line 538

def self.project_foreign_key
  'target_project_id'
end

.recent_target_branches(limit: 100) ⇒ Object

Returns the top 100 target branches

The returned value is a Array containing branch names sort by updated_at of merge request:

['master', 'develop', 'production']

limit - The maximum number of target branch to return.


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# File 'app/models/merge_request.rb', line 456

def self.recent_target_branches(limit: 100)
  group(:target_branch)
    .select(:target_branch)
    .reorder(arel_table[:updated_at].maximum.desc)
    .limit(limit)
    .pluck(:target_branch)
end

.reference_patternObject

Pattern used to extract `!123` merge request references from text

This pattern supports cross-project references.


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# File 'app/models/merge_request.rb', line 523

def self.reference_pattern
  @reference_pattern ||= %r{
    (#{Project.reference_pattern})?
    #{Regexp.escape(reference_prefix)}#{Gitlab::Regex.merge_request}
  }x
end

.reference_prefixObject


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# File 'app/models/merge_request.rb', line 444

def self.reference_prefix
  '!'
end

.reference_valid?(reference) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 534

def self.reference_valid?(reference)
  reference.to_i > 0 && reference.to_i <= Gitlab::Database::MAX_INT_VALUE
end

.reviewers_subqueryObject


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# File 'app/models/merge_request.rb', line 475

def self.reviewers_subquery
  MergeRequestReviewer.arel_table
    .project('true')
    .where(Arel::Nodes::SqlLiteral.new("#{to_ability_name}_id = #{to_ability_name}s.id"))
end

.set_latest_merge_request_diff_ids!Object

This is used after project import, to reset the IDs to the correct values. It is not intended to be called without having already scoped the relation.

Only set `regular` merge request diffs as latest so `merge_head` diff won't be considered as `MergeRequest#merge_request_diff`.


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# File 'app/models/merge_request.rb', line 567

def self.set_latest_merge_request_diff_ids!
  update = "
    latest_merge_request_diff_id = (
      SELECT MAX(id)
      FROM merge_request_diffs
      WHERE merge_requests.id = merge_request_diffs.merge_request_id
      AND merge_request_diffs.diff_type = #{MergeRequestDiff.diff_types[:regular]}
    )".squish

  self.each_batch do |batch|
    batch.update_all(update)
  end
end

.sort_by_attribute(method, excluded_labels: []) ⇒ Object


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# File 'app/models/merge_request.rb', line 464

def self.sort_by_attribute(method, excluded_labels: [])
  case method.to_s
  when 'merged_at', 'merged_at_asc' then order_merged_at_asc
  when 'closed_at', 'closed_at_asc' then order_closed_at_asc
  when 'merged_at_desc' then order_merged_at_desc
  when 'closed_at_desc' then order_closed_at_desc
  else
    super
  end
end

.total_time_to_mergeObject


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# File 'app/models/merge_request.rb', line 420

def self.total_time_to_merge
  join_metrics
    .merge(MergeRequest::Metrics.with_valid_time_to_merge)
    .pluck(MergeRequest::Metrics.time_to_merge_expression)
    .first
end

.wip_titleObject


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# File 'app/models/merge_request.rb', line 598

def self.draft_title(title)
  draft?(title) ? title : "Draft: #{title}"
end

.wipless_titleObject


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# File 'app/models/merge_request.rb', line 597

def self.draftless_title(title)
  title.sub(DRAFT_REGEX, "")
end

.work_in_progress?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 596

def self.draft?(title)
  !!(title =~ DRAFT_REGEX)
end

Instance Method Details

#actual_head_pipelineObject

Use this method whenever you need to make sure the head_pipeline is synced with the branch head commit, for example checking if a merge request can be merged. For more information check: gitlab.com/gitlab-org/gitlab-foss/issues/40004


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# File 'app/models/merge_request.rb', line 494

def actual_head_pipeline
  head_pipeline&.matches_sha_or_source_sha?(diff_head_sha) ? head_pipeline : nil
end

#actual_head_pipeline_active?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 512

def actual_head_pipeline_active?
  !!actual_head_pipeline&.active?
end

#actual_head_pipeline_success?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 516

def actual_head_pipeline_success?
  !!actual_head_pipeline&.success?
end

#all_commit_shasObject

Note that this could also return SHA from now dangling commits


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# File 'app/models/merge_request.rb', line 1733

def all_commit_shas
  @all_commit_shas ||= begin
    return commit_shas unless persisted?

    all_commits.pluck(:sha).uniq
  end
end

#all_commitsObject


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# File 'app/models/merge_request.rb', line 1725

def all_commits
  MergeRequestDiffCommit
    .where(merge_request_diff: merge_request_diffs.recent)
    .limit(10_000)
end

#all_pipelinesObject


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# File 'app/models/merge_request.rb', line 1550

def all_pipelines
  strong_memoize(:all_pipelines) do
    Ci::PipelinesForMergeRequestFinder.new(self, nil).all
  end
end

#allow_collaborationObject Also known as: allow_collaboration?


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# File 'app/models/merge_request.rb', line 1894

def allow_collaboration
  collaborative_push_possible? && allow_maintainer_to_push
end

#allows_multiple_reviewers?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1937

def allows_multiple_reviewers?
  false
end

#allows_reviewers?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1933

def allows_reviewers?
  true
end

#auto_merge_strategyObject


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# File 'app/models/merge_request.rb', line 1204

def auto_merge_strategy
  return unless auto_merge_enabled?

  merge_params['auto_merge_strategy'] || AutoMergeService::STRATEGY_MERGE_WHEN_PIPELINE_SUCCEEDS
end

#auto_merge_strategy=(strategy) ⇒ Object


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# File 'app/models/merge_request.rb', line 1210

def auto_merge_strategy=(strategy)
  merge_params['auto_merge_strategy'] = strategy
end

#banzai_render_context(field) ⇒ Object


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# File 'app/models/merge_request.rb', line 1924

def banzai_render_context(field)
  super.merge(label_url_method: :project_merge_requests_url)
end

#base_pipelineObject


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# File 'app/models/merge_request.rb', line 1862

def base_pipeline
  @base_pipeline ||= project.ci_pipelines
    .order(id: :desc)
    .find_by(sha: diff_base_sha, ref: target_branch)
end

#branch_merge_base_commitObject


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# File 'app/models/merge_request.rb', line 892

def branch_merge_base_commit
  start_sha = target_branch_sha
  head_sha  = source_branch_sha

  if start_sha && head_sha
    target_project.merge_base_commit(start_sha, head_sha)
  end
end

#branch_merge_base_shaObject


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# File 'app/models/merge_request.rb', line 929

def branch_merge_base_sha
  branch_merge_base_commit.try(:sha)
end

#branch_missing?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1415

def branch_missing?
  !source_branch_exists? || !target_branch_exists?
end

#broken?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1419

def broken?
  has_no_commits? || branch_missing? || cannot_be_merged?
end

#cache_merge_request_closes_issues!(current_user = self.author) ⇒ Object

If the merge request closes any issues, save this information in the `MergeRequestsClosingIssues` model. This is a performance optimization. Calculating this information for a number of merge requests requires running `ReferenceExtractor` on each of them separately. This optimization does not apply to issues from external sources.


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# File 'app/models/merge_request.rb', line 1270

def cache_merge_request_closes_issues!(current_user = self.author)
  return unless project.issues_enabled?
  return if closed? || merged?

  transaction do
    self.merge_requests_closing_issues.delete_all

    closes_issues(current_user).each do |issue|
      next if issue.is_a?(ExternalIssue)

      self.merge_requests_closing_issues.create!(issue: issue)
    end
  end
end

#calculate_reactive_cache(identifier, current_user_id = nil, report_type = nil, *args) ⇒ Object

Raises:

  • (NameError)

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# File 'app/models/merge_request.rb', line 1710

def calculate_reactive_cache(identifier, current_user_id = nil, report_type = nil, *args)
  service_class = identifier.constantize

  # TODO: the type check should change to something that includes exposed artifacts service
  # issue: https://gitlab.com/gitlab-org/gitlab/issues/34224
  raise NameError, service_class unless service_class < Ci::CompareReportsBaseService

  current_user = User.find_by(id: current_user_id)
  service_class.new(project, current_user, id: id, report_type: report_type).execute(comparison_base_pipeline(identifier), actual_head_pipeline)
end

#can_allow_collaboration?(user) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1907

def can_allow_collaboration?(user)
  collaborative_push_possible? &&
    Ability.allowed?(user, :push_code, source_project)
end

#can_be_cherry_picked?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1788

def can_be_cherry_picked?
  merge_commit.present?
end

#can_be_closed?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1011

def can_be_closed?
  opened?
end

#can_be_merged_by?(user, skip_collaboration_check: false) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1423

def can_be_merged_by?(user, skip_collaboration_check: false)
  access = ::Gitlab::UserAccess.new(user, container: project, skip_collaboration_check: skip_collaboration_check)
  access.can_update_branch?(target_branch)
end

#can_be_merged_via_command_line_by?(user) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1428

def can_be_merged_via_command_line_by?(user)
  access = ::Gitlab::UserAccess.new(user, container: project)
  access.can_push_to_branch?(target_branch)
end

#can_be_reverted?(current_user) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1762

def can_be_reverted?(current_user)
  return false unless merge_commit
  return false unless merged_at

  # It is not guaranteed that Note#created_at will be strictly later than
  # MergeRequestMetric#merged_at. Nanoseconds on MySQL may break this
  # comparison, as will a HA environment if clocks are not *precisely*
  # synchronized. Add a minute's leeway to compensate for both possibilities
  cutoff = merged_at - 1.minute

  notes_association = notes_with_associations.where('created_at >= ?', cutoff)

  !merge_commit.has_been_reverted?(current_user, notes_association)
end

#can_cancel_auto_merge?(current_user) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1184

def can_cancel_auto_merge?(current_user)
  can_be_merged_by?(current_user) || self.author == current_user
end

#can_remove_source_branch?(current_user) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1188

def can_remove_source_branch?(current_user)
  source_project &&
    !ProtectedBranch.protected?(source_project, source_branch) &&
    !source_project.root_ref?(source_branch) &&
    Ability.allowed?(current_user, :push_code, source_project) &&
    diff_head_sha == source_branch_head.try(:sha)
end

#check_mergeability(async: false) ⇒ Object


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# File 'app/models/merge_request.rb', line 1098

def check_mergeability(async: false)
  return unless recheck_merge_status?

  check_service = MergeRequests::MergeabilityCheckService.new(self)

  if async
    check_service.async_execute
  else
    check_service.execute(retry_lease: false)
  end
end

#cleanup_refs(only: :all) ⇒ Object


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# File 'app/models/merge_request.rb', line 1491

def cleanup_refs(only: :all)
  target_refs = []
  target_refs << ref_path       if %i[all head].include?(only)
  target_refs << merge_ref_path if %i[all merge].include?(only)
  target_refs << train_ref_path if %i[all train].include?(only)

  project.repository.delete_refs(*target_refs)
end

#clear_memoized_shasObject


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# File 'app/models/merge_request.rb', line 1077

def clear_memoized_shas
  @target_branch_sha = @source_branch_sha = nil

  clear_memoization(:source_branch_head)
  clear_memoization(:target_branch_head)
end

#closed_eventObject


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# File 'app/models/merge_request.rb', line 1125

def closed_event
  @closed_event ||= target_project.events.where(target_id: self.id, target_type: "MergeRequest", action: :closed).last
end

#closed_or_merged_without_fork?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 996

def closed_or_merged_without_fork?
  (closed? || merged?) && source_project_missing?
end

#closes_issues(current_user = self.author) ⇒ Object

Return the set of issues that will be closed if this merge request is accepted.


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# File 'app/models/merge_request.rb', line 1298

def closes_issues(current_user = self.author)
  if target_branch == project.default_branch
    messages = [title, description]
    messages.concat(commits.map(&:safe_message)) if merge_request_diff.persisted?

    Gitlab::ClosingIssueExtractor.new(project, current_user)
      .closed_by_message(messages.join("\n"))
  else
    []
  end
end

#collaborative_push_possible?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1900

def collaborative_push_possible?
  source_project.present? && for_fork? &&
    target_project.visibility_level > Gitlab::VisibilityLevel::PRIVATE &&
    source_project.visibility_level > Gitlab::VisibilityLevel::PRIVATE &&
    !ProtectedBranch.protected?(source_project, source_branch)
end

#commit_notesObject


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# File 'app/models/merge_request.rb', line 1241

def commit_notes
  # Fetch comments only from last 100 commits
  commit_ids = commit_shas(limit: 100)

  Note
    .user
    .where(project_id: [source_project_id, target_project_id])
    .for_commit_id(commit_ids)
end

#commit_shas(limit: nil) ⇒ Object


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# File 'app/models/merge_request.rb', line 666

def commit_shas(limit: nil)
  return merge_request_diff.commit_shas(limit: limit) if merge_request_diff.persisted?

  shas =
    if compare_commits
      compare_commits.to_a.reverse.map(&:sha)
    else
      Array(diff_head_sha)
    end

  limit ? shas.take(limit) : shas
end

#commits(limit: nil, load_from_gitaly: false) ⇒ Object


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# File 'app/models/merge_request.rb', line 639

def commits(limit: nil, load_from_gitaly: false)
  return merge_request_diff.commits(limit: limit, load_from_gitaly: load_from_gitaly) if merge_request_diff.persisted?

  commits_arr = if compare_commits
                  reversed_commits = compare_commits.reverse
                  limit ? reversed_commits.take(limit) : reversed_commits
                else
                  []
                end

  CommitCollection.new(source_project, commits_arr, source_branch)
end

#commits_countObject


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# File 'app/models/merge_request.rb', line 656

def commits_count
  if merge_request_diff.persisted?
    merge_request_diff.commits_count
  elsif compare_commits
    compare_commits.size
  else
    0
  end
end

#committersObject


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# File 'app/models/merge_request.rb', line 605

def committers
  @committers ||= commits.committers
end

#compare_accessibility_reportsObject


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# File 'app/models/merge_request.rb', line 1604

def compare_accessibility_reports
  unless has_accessibility_reports?
    return { status: :error, status_reason: _('This merge request does not have accessibility reports') }
  end

  compare_reports(Ci::CompareAccessibilityReportsService)
end

#compare_codequality_reportsObject


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# File 'app/models/merge_request.rb', line 1644

def compare_codequality_reports
  unless has_codequality_reports?
    return { status: :error, status_reason: _('This merge request does not have codequality reports') }
  end

  compare_reports(Ci::CompareCodequalityReportsService)
end

#compare_reports(service_class, current_user = nil, report_type = nil) ⇒ Object

TODO: consider renaming this as with exposed artifacts we generate reports, not always compare issue: gitlab.com/gitlab-org/gitlab/issues/34224


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# File 'app/models/merge_request.rb', line 1679

def compare_reports(service_class, current_user = nil, report_type = nil )
  with_reactive_cache(service_class.name, current_user&.id, report_type) do |data|
    unless service_class.new(project, current_user, id: id, report_type: report_type)
      .latest?(comparison_base_pipeline(service_class.name), actual_head_pipeline, data)
      raise InvalidateReactiveCache
    end

    data
  end || { status: :parsing }
end

#compare_sast_reports(current_user) ⇒ Object


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# File 'app/models/merge_request.rb', line 1698

def compare_sast_reports(current_user)
  return missing_report_error("SAST") unless has_sast_reports?

  compare_reports(::Ci::CompareSecurityReportsService, current_user, 'sast')
end

#compare_secret_detection_reports(current_user) ⇒ Object


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# File 'app/models/merge_request.rb', line 1704

def compare_secret_detection_reports(current_user)
  return missing_report_error("secret detection") unless has_secret_detection_reports?

  compare_reports(::Ci::CompareSecurityReportsService, current_user, 'secret_detection')
end

#compare_test_reportsObject


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# File 'app/models/merge_request.rb', line 1584

def compare_test_reports
  unless has_test_reports?
    return { status: :error, status_reason: 'This merge request does not have test reports' }
  end

  compare_reports(Ci::CompareTestReportsService)
end

#comparison_base_pipeline(service_class) ⇒ Object


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# File 'app/models/merge_request.rb', line 1858

def comparison_base_pipeline(service_class)
  (use_merge_base_pipeline_for_comparison?(service_class) && merge_base_pipeline) || base_pipeline
end

#context_commits(limit: nil) ⇒ Object


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# File 'app/models/merge_request.rb', line 627

def context_commits(limit: nil)
  @context_commits ||= merge_request_context_commits.order_by_committed_date_desc.limit(limit).map(&:to_commit)
end

#context_commits_countObject


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# File 'app/models/merge_request.rb', line 635

def context_commits_count
  context_commits.count
end

#context_commits_diffObject


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# File 'app/models/merge_request.rb', line 1974

def context_commits_diff
  strong_memoize(:context_commits_diff) do
    ContextCommitsDiff.new(self)
  end
end

#create_merge_request_diffObject


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# File 'app/models/merge_request.rb', line 1033

def create_merge_request_diff
  # Callers such as MergeRequests::BuildService may not call eager_fetch_ref!. Just
  # in case they haven't, we fetch the ref.
  fetch_ref! unless skip_fetch_ref

  # n+1: https://gitlab.com/gitlab-org/gitlab/-/issues/19377
  Gitlab::GitalyClient.allow_n_plus_1_calls do
    merge_request_diffs.create!
    reload_merge_request_diff
  end
end

#default_merge_commit_message(include_description: false, user: nil) ⇒ Object


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# File 'app/models/merge_request.rb', line 1363

def default_merge_commit_message(include_description: false, user: nil)
  if self.target_project.merge_commit_template.present? && !include_description
    return ::Gitlab::MergeRequests::CommitMessageGenerator.new(merge_request: self, current_user: user).merge_message
  end

  closes_issues_references = visible_closing_issues_for.map do |issue|
    issue.to_reference(target_project)
  end

  message = [
    "Merge branch '#{source_branch}' into '#{target_branch}'",
    title
  ]

  if !include_description && closes_issues_references.present?
    message << "Closes #{closes_issues_references.to_sentence}"
  end

  message << "#{description}" if include_description && description.present?
  message << "See merge request #{to_reference(full: true)}"

  message.join("\n\n")
end

#default_squash_commit_message(user: nil) ⇒ Object


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# File 'app/models/merge_request.rb', line 1387

def default_squash_commit_message(user: nil)
  if self.target_project.squash_commit_template.present?
    return ::Gitlab::MergeRequests::CommitMessageGenerator.new(merge_request: self, current_user: user).squash_message
  end

  title
end

#diff_base_commitObject


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# File 'app/models/merge_request.rb', line 810

def diff_base_commit
  if merge_request_diff.persisted?
    merge_request_diff.base_commit
  else
    branch_merge_base_commit
  end
end

#diff_base_shaObject


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# File 'app/models/merge_request.rb', line 842

def diff_base_sha
  if merge_request_diff.persisted?
    merge_request_diff.base_commit_sha
  else
    branch_merge_base_commit.try(:sha)
  end
end

#diff_head_commitObject


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# File 'app/models/merge_request.rb', line 826

def diff_head_commit
  if merge_request_diff.persisted?
    merge_request_diff.head_commit
  else
    source_branch_head
  end
end

#diff_head_shaObject


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# File 'app/models/merge_request.rb', line 850

def diff_head_sha
  if merge_request_diff.persisted?
    merge_request_diff.head_commit_sha
  else
    source_branch_head.try(:sha)
  end
end

#diff_refsObject


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# File 'app/models/merge_request.rb', line 909

def diff_refs
  if importing? || persisted?
    merge_request_diff.diff_refs
  else
    repository_diff_refs
  end
end

#diff_sizeObject


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# File 'app/models/merge_request.rb', line 790

def diff_size
  # Calling `merge_request_diff.diffs.real_size` will also perform
  # highlighting, which we don't need here.
  merge_request_diff&.real_size || diff_stats&.real_size || diffs.real_size
end

#diff_start_commitObject


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# File 'app/models/merge_request.rb', line 818

def diff_start_commit
  if merge_request_diff.persisted?
    merge_request_diff.start_commit
  else
    target_branch_head
  end
end

#diff_start_shaObject


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# File 'app/models/merge_request.rb', line 834

def diff_start_sha
  if merge_request_diff.persisted?
    merge_request_diff.start_commit_sha
  else
    target_branch_head.try(:sha)
  end
end

#diff_statsObject


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# File 'app/models/merge_request.rb', line 782

def diff_stats
  return unless diff_refs

  strong_memoize(:diff_stats) do
    project.repository.diff_stats(diff_refs.base_sha, diff_refs.head_sha)
  end
end

#diffable_merge_ref?Boolean

rubocop: enable CodeReuse/ServiceClass

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1111

def diffable_merge_ref?
  open? && merge_head_diff.present? && (Feature.enabled?(:display_merge_conflicts_in_diff, project) || can_be_merged?)
end

#diffs(diff_options = {}) ⇒ Object


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# File 'app/models/merge_request.rb', line 735

def diffs(diff_options = {})
  if compare
    # When saving MR diffs, `expanded` is implicitly added (because we need
    # to save the entire contents to the DB), so add that here for
    # consistency.
    compare.diffs(diff_options.merge(expanded: true))
  else
    merge_request_diff.diffs(diff_options)
  end
end

#discussions_diffsObject


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# File 'app/models/merge_request.rb', line 771

def discussions_diffs
  strong_memoize(:discussions_diffs) do
    note_diff_files = NoteDiffFile
      .joins(:diff_note)
      .merge(notes.or(commit_notes))
      .includes(diff_note: :project)

    Gitlab::DiscussionsDiff::FileCollection.new(note_diff_files.to_a)
  end
end

#discussions_rendered_on_frontend?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1874

def discussions_rendered_on_frontend?
  true
end

#diverged_commits_countObject


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# File 'app/models/merge_request.rb', line 1523

def diverged_commits_count
  cache = Rails.cache.read(:"merge_request_#{id}_diverged_commits")

  if cache.blank? || cache[:source_sha] != source_branch_sha || cache[:target_sha] != target_branch_sha
    cache = {
      source_sha: source_branch_sha,
      target_sha: target_branch_sha,
      diverged_commits_count: compute_diverged_commits_count
    }
    Rails.cache.write(:"merge_request_#{id}_diverged_commits", cache)
  end

  cache[:diverged_commits_count]
end

#diverged_from_target_branch?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1546

def diverged_from_target_branch?
  diverged_commits_count > 0
end

#draft?Boolean Also known as: work_in_progress?

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1129

def draft?
  self.class.draft?(title)
end

#draft_titleObject Also known as: wip_title


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# File 'app/models/merge_request.rb', line 1139

def draft_title
  self.class.draft_title(self.title)
end

#draftless_titleObject Also known as: wipless_title


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# File 'app/models/merge_request.rb', line 1134

def draftless_title
  self.class.draftless_title(self.title)
end

#draftless_title_changed(old_title) ⇒ Object Also known as: wipless_title_changed

Verifies if title has changed not taking into account Draft prefix for merge requests.


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# File 'app/models/merge_request.rb', line 611

def draftless_title_changed(old_title)
  self.class.draftless_title(old_title) != self.draftless_title
end

#eager_fetch_ref!Object


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# File 'app/models/merge_request.rb', line 1019

def eager_fetch_ref!
  return unless valid?

  # has_internal_id normally attempts to allocate the iid in the
  # before_create hook, but we need the iid to be available before
  # that to fetch the ref into the target project.
  track_target_project_iid!
  ensure_target_project_iid!

  fetch_ref!
  # Prevent the after_create hook from fetching the source branch again.
  @skip_fetch_ref = true
end

#enabled_reportsObject


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# File 'app/models/merge_request.rb', line 1961

def enabled_reports
  {
    sast: report_type_enabled?(:sast),
    secret_detection: report_type_enabled?(:secret_detection)
  }
end

#ensure_merge_request_diffObject


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# File 'app/models/merge_request.rb', line 1015

def ensure_merge_request_diff
  merge_request_diff.persisted? || create_merge_request_diff
end

#ensure_metricsObject


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# File 'app/models/merge_request.rb', line 1929

def ensure_metrics
  MergeRequest::Metrics.record!(self)
end

#environments_in_head_pipeline(deployment_status: nil) ⇒ Object


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# File 'app/models/merge_request.rb', line 1459

def environments_in_head_pipeline(deployment_status: nil)
  if ::Feature.enabled?(:fix_related_environments_for_merge_requests, target_project)
    actual_head_pipeline&.environments_in_self_and_descendants(deployment_status: deployment_status) || Environment.none
  else
    legacy_environments
  end
end

#etag_caching_enabled?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1916

def etag_caching_enabled?
  true
end

#fetch_ref!Object


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# File 'app/models/merge_request.rb', line 1467

def fetch_ref!
  target_project.repository.fetch_source_branch!(source_project.repository, source_branch, ref_path)
end

#ff_merge_possible?Boolean

rubocop: enable CodeReuse/ServiceClass

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1176

def ff_merge_possible?
  project.repository.ancestor?(target_branch_sha, diff_head_sha)
end

#find_actual_head_pipelineObject


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# File 'app/models/merge_request.rb', line 1912

def find_actual_head_pipeline
  all_pipelines.for_sha_or_source_sha(diff_head_sha).first
end

#find_assignee(user) ⇒ Object


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# File 'app/models/merge_request.rb', line 1945

def find_assignee(user)
  merge_request_assignees.find_by(user_id: user.id)
end

#find_codequality_mr_diff_reportsObject

TODO: this method and compare_test_reports use the same result type, which is handled by the controller's #reports_response. we should minimize mistakes by isolating the common parts. issue: gitlab.com/gitlab-org/gitlab/issues/34224


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# File 'app/models/merge_request.rb', line 1632

def find_codequality_mr_diff_reports
  unless has_codequality_mr_diff_report?
    return { status: :error, status_reason: 'This merge request does not have codequality mr diff reports' }
  end

  compare_reports(Ci::GenerateCodequalityMrDiffReportService)
end

#find_coverage_reportsObject

TODO: this method and compare_test_reports use the same result type, which is handled by the controller's #reports_response. we should minimize mistakes by isolating the common parts. issue: gitlab.com/gitlab-org/gitlab/issues/34224


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# File 'app/models/merge_request.rb', line 1616

def find_coverage_reports
  unless has_coverage_reports?
    return { status: :error, status_reason: 'This merge request does not have coverage reports' }
  end

  compare_reports(Ci::GenerateCoverageReportsService)
end

#find_exposed_artifactsObject

TODO: this method and compare_test_reports use the same result type, which is handled by the controller's #reports_response. we should minimize mistakes by isolating the common parts. issue: gitlab.com/gitlab-org/gitlab/issues/34224


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# File 'app/models/merge_request.rb', line 1668

def find_exposed_artifacts
  unless has_exposed_artifacts?
    return { status: :error, status_reason: 'This merge request does not have exposed artifacts' }
  end

  compare_reports(Ci::GenerateExposedArtifactsReportService)
end

#find_reviewer(user) ⇒ Object


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# File 'app/models/merge_request.rb', line 1953

def find_reviewer(user)
  merge_request_reviewers.find_by(user_id: user.id)
end

#find_terraform_reportsObject


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# File 'app/models/merge_request.rb', line 1652

def find_terraform_reports
  unless has_terraform_reports?
    return { status: :error, status_reason: 'This merge request does not have terraform reports' }
  end

  compare_reports(Ci::GenerateTerraformReportsService)
end

#first_commitObject


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# File 'app/models/merge_request.rb', line 727

def first_commit
  compare_commits.present? ? compare_commits.first : merge_request_diff.first_commit
end

#first_contribution?Boolean

rubocop: enable CodeReuse/ServiceClass

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1884

def first_contribution?
  return false if project.team.max_member_access(author_id) > Gitlab::Access::GUEST

  !project.merge_requests.merged.exists?(author_id: author_id)
end

#first_multiline_commitObject

Returns the oldest multi-line commit


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# File 'app/models/merge_request.rb', line 1396

def first_multiline_commit
  strong_memoize(:first_multiline_commit) do
    recent_commits.without_merge_commits.reverse_each.find(&:description?)
  end
end

#for_fork?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1257

def for_fork?
  target_project != source_project
end

#for_same_project?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1261

def for_same_project?
  target_project == source_project
end

#force_remove_source_branch?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1200

def force_remove_source_branch?
  Gitlab::Utils.to_boolean(merge_params['force_remove_source_branch'])
end

#has_accessibility_reports?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1592

def has_accessibility_reports?
  actual_head_pipeline.present? && actual_head_pipeline.has_reports?(Ci::JobArtifact.accessibility_reports)
end

#has_ci?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1409

def has_ci?
  return false if has_no_commits?

  !!(head_pipeline_id || all_pipelines.any? || source_project&.ci_integration)
end

#has_codequality_mr_diff_report?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1624

def has_codequality_mr_diff_report?
  actual_head_pipeline&.has_codequality_mr_diff_report?
end

#has_codequality_reports?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1640

def has_codequality_reports?
  actual_head_pipeline&.has_reports?(Ci::JobArtifact.codequality_reports)
end

#has_commits?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1840

def has_commits?
  merge_request_diff.persisted? && commits_count.to_i > 0
end

#has_complete_diff_refs?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1792

def has_complete_diff_refs?
  diff_refs && diff_refs.complete?
end

#has_coverage_reports?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1596

def has_coverage_reports?
  actual_head_pipeline&.has_coverage_reports?
end

#has_exposed_artifacts?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1660

def has_exposed_artifacts?
  actual_head_pipeline&.has_exposed_artifacts?
end

#has_no_commits?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1844

def has_no_commits?
  !has_commits?
end

#has_sast_reports?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1690

def has_sast_reports?
  !!actual_head_pipeline&.has_reports?(::Ci::JobArtifact.sast_reports)
end

#has_secret_detection_reports?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1694

def has_secret_detection_reports?
  !!actual_head_pipeline&.has_reports?(::Ci::JobArtifact.secret_detection_reports)
end

#has_terraform_reports?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1600

def has_terraform_reports?
  actual_head_pipeline&.has_reports?(Ci::JobArtifact.terraform_reports)
end

#has_test_reports?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1563

def has_test_reports?
  actual_head_pipeline&.has_reports?(Ci::JobArtifact.test_reports)
end

#head_pipeline_active?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 508

def head_pipeline_active?
  !!head_pipeline&.active?
end

#hook_attrsObject


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# File 'app/models/merge_request.rb', line 616

def hook_attrs
  Gitlab::HookData::MergeRequestBuilder.new(self).build
end

#in_locked_stateObject


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# File 'app/models/merge_request.rb', line 1508

def in_locked_state
  lock_mr
  yield
ensure
  unlock_mr
end

#includes_ci_config?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1968

def includes_ci_config?
  return false unless diff_stats

  diff_stats.map(&:path).include?(project.ci_config_path_or_default)
end

#issues_mentioned_but_not_closing(current_user) ⇒ Object


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# File 'app/models/merge_request.rb', line 1310

def issues_mentioned_but_not_closing(current_user)
  return [] unless target_branch == project.default_branch

  ext = Gitlab::ReferenceExtractor.new(project, current_user)
  ext.analyze("#{title}\n#{description}")

  ext.issues - visible_closing_issues_for(current_user)
end

#keep_around_commitObject

rubocop: enable CodeReuse/ServiceClass


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# File 'app/models/merge_request.rb', line 1836

def keep_around_commit
  project.repository.keep_around(self.merge_commit_sha)
end

#legacy_environmentsObject

This method is for looking for active environments which created via pipelines for merge requests. Since deployments run on a merge request ref (e.g. `refs/merge-requests/:iid/head`), we cannot look up environments with source branch name.


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# File 'app/models/merge_request.rb', line 1445

def legacy_environments
  return Environment.none unless actual_head_pipeline&.merge_request?

  build_for_actual_head_pipeline = Ci::Build.latest.where(pipeline: actual_head_pipeline)

  environments = build_for_actual_head_pipeline.joins(:metadata)
                                              .where.not('ci_builds_metadata.expanded_environment_name' => nil)
                                              .distinct('ci_builds_metadata.expanded_environment_name')
                                              .limit(100)
                                              .pluck(:expanded_environment_name)

  Environment.where(project: project, name: environments)
end

#merge_async(user_id, params) ⇒ Object

Calls `MergeWorker` to proceed with the merge process and updates `merge_jid` with the MergeWorker#jid. This helps tracking enqueued and ongoing merge jobs.


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# File 'app/models/merge_request.rb', line 686

def merge_async(user_id, params)
  jid = MergeWorker.with_status.perform_async(id, user_id, params.to_h)
  update_column(:merge_jid, jid)

  # merge_ongoing? depends on merge_jid
  # expire etag cache since the attribute is changed without triggering callbacks
  expire_etag_cache
end

#merge_base_pipelineObject


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# File 'app/models/merge_request.rb', line 1868

def merge_base_pipeline
  @merge_base_pipeline ||= project.ci_pipelines
    .order(id: :desc)
    .find_by(sha: actual_head_pipeline.target_sha, ref: target_branch)
end

#merge_commitObject


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# File 'app/models/merge_request.rb', line 1741

def merge_commit
  @merge_commit ||= project.commit(merge_commit_sha) if merge_commit_sha
end

#merge_eventObject


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# File 'app/models/merge_request.rb', line 1121

def merge_event
  @merge_event ||= target_project.events.where(target_id: self.id, target_type: "MergeRequest", action: :merged).last
end

#merge_ongoing?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 988

def merge_ongoing?
  # While the MergeRequest is locked, it should present itself as 'merge ongoing'.
  # The unlocking process is handled by StuckMergeJobsWorker scheduled in Cron.
  return true if locked?

  !!merge_jid && !merged? && Gitlab::SidekiqStatus.running?(merge_jid)
end

#merge_participantsObject


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# File 'app/models/merge_request.rb', line 717

def merge_participants
  participants = [author]

  if auto_merge_enabled? && !participants.include?(merge_user)
    participants << merge_user
  end

  participants.select { |participant| Ability.allowed?(participant, :read_merge_request, self) }
end

#merge_pipelineObject


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# File 'app/models/merge_request.rb', line 498

def merge_pipeline
  return unless merged?

  # When the merge_method is :merge there will be a merge_commit_sha, however
  # when it is fast-forward there is no merge commit, so we must fall back to
  # either the squash commit (if the MR was squashed) or the diff head commit.
  sha = merge_commit_sha || squash_commit_sha || diff_head_sha
  target_project.latest_pipeline(target_branch, sha)
end

#merge_ref_headObject

Returns the current merge-ref HEAD commit.


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# File 'app/models/merge_request.rb', line 1473

def merge_ref_head
  return project.repository.commit(merge_ref_sha) if merge_ref_sha

  project.repository.commit(merge_ref_path)
end

#merge_ref_pathObject


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# File 'app/models/merge_request.rb', line 1483

def merge_ref_path
  "refs/#{Repository::REF_MERGE_REQUEST}/#{iid}/merge"
end

#merge_request_assignees_with(user_ids) ⇒ Object


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# File 'app/models/merge_request.rb', line 1949

def merge_request_assignees_with(user_ids)
  merge_request_assignees.where(user_id: user_ids)
end

#merge_request_diffObject

This is the same as latest_merge_request_diff unless:

  1. There are arguments - in which case we might be trying to force-reload.

  2. This association is already loaded.

  3. The latest diff does not exist.

  4. It doesn't have any merge_request_diffs - it returns an empty MergeRequestDiff

The second one in particular is important - MergeRequestDiff#merge_request is the inverse of MergeRequest#merge_request_diff, which means it may not be the latest diff, because we could have loaded any diff from this particular MR. If we haven't already loaded a diff, then it's fine to load the latest.


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# File 'app/models/merge_request.rb', line 82

def merge_request_diff
  fallback = latest_merge_request_diff unless association(:merge_request_diff).loaded?

  fallback || super || MergeRequestDiff.new(merge_request_id: id)
end

#merge_request_diff_for(diff_refs_or_sha) ⇒ Object


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# File 'app/models/merge_request.rb', line 1049

def merge_request_diff_for(diff_refs_or_sha)
  matcher =
    if diff_refs_or_sha.is_a?(Gitlab::Diff::DiffRefs)
      {
        'start_commit_sha' => diff_refs_or_sha.start_sha,
        'head_commit_sha' => diff_refs_or_sha.head_sha,
        'base_commit_sha' => diff_refs_or_sha.base_sha
      }
    else
      { 'head_commit_sha' => diff_refs_or_sha }
    end

  viewable_diffs.find do |diff|
    diff.attributes.slice(*matcher.keys) == matcher
  end
end

#merge_request_reviewers_with(user_ids) ⇒ Object


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# File 'app/models/merge_request.rb', line 1957

def merge_request_reviewers_with(user_ids)
  merge_request_reviewers.where(user_id: user_ids)
end

#mergeable?(skip_ci_check: false, skip_discussions_check: false) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1144

def mergeable?(skip_ci_check: false, skip_discussions_check: false)
  return false unless mergeable_state?(skip_ci_check: skip_ci_check,
                                       skip_discussions_check: skip_discussions_check)

  check_mergeability

  can_be_merged? && !should_be_rebased?
end

#mergeable_ci_state?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1433

def mergeable_ci_state?
  return true unless project.only_allow_merge_if_pipeline_succeeds?
  return false unless actual_head_pipeline
  return true if project.allow_merge_on_skipped_pipeline? && actual_head_pipeline.skipped?

  actual_head_pipeline.success?
end

#mergeable_discussions_state?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1251

def mergeable_discussions_state?
  return true unless project.only_allow_merge_if_all_discussions_are_resolved?

  unresolved_notes.none?(&:to_be_resolved?)
end

#mergeable_state?(skip_ci_check: false, skip_discussions_check: false) ⇒ Boolean

rubocop: disable CodeReuse/ServiceClass

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1154

def mergeable_state?(skip_ci_check: false, skip_discussions_check: false)
  if Feature.enabled?(:improved_mergeability_checks, self.project)
    additional_checks = MergeRequests::Mergeability::RunChecksService.new(
      merge_request: self,
      params: {
        skip_ci_check: skip_ci_check,
        skip_discussions_check: skip_discussions_check
      }
    )
    additional_checks.execute.all?(&:success?)
  else
    return false unless open?
    return false if draft?
    return false if broken?
    return false unless skip_discussions_check || mergeable_discussions_state?
    return false unless skip_ci_check || mergeable_ci_state?

    true
  end
end

#merged_atObject


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# File 'app/models/merge_request.rb', line 1777

def merged_at
  strong_memoize(:merged_at) do
    next unless merged?

    metrics&.merged_at ||
      merge_event&.created_at ||
      resource_state_events.find_by(state: :merged)&.created_at ||
      notes.system.reorder(nil).find_by(note: 'merged')&.created_at
  end
end

#merged_commit_shaObject


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# File 'app/models/merge_request.rb', line 1749

def merged_commit_sha
  return unless merged?

  sha = merge_commit_sha || squash_commit_sha || diff_head_sha
  sha.presence
end

#modified_paths(past_merge_request_diff: nil, fallback_on_overflow: false) ⇒ Object


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# File 'app/models/merge_request.rb', line 796

def modified_paths(past_merge_request_diff: nil, fallback_on_overflow: false)
  if past_merge_request_diff
    past_merge_request_diff.modified_paths(fallback_on_overflow: fallback_on_overflow)
  elsif compare
    diff_stats&.paths || compare.modified_paths
  else
    merge_request_diff.modified_paths(fallback_on_overflow: fallback_on_overflow)
  end
end

#new_pathsObject


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# File 'app/models/merge_request.rb', line 806

def new_paths
  diffs.diff_files.map(&:new_path)
end

#non_latest_diffsObject


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# File 'app/models/merge_request.rb', line 746

def non_latest_diffs
  merge_request_diffs.where.not(id: merge_request_diff.id)
end

#note_positions_for_paths(paths, user = nil) ⇒ Object


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# File 'app/models/merge_request.rb', line 750

def note_positions_for_paths(paths, user = nil)
  positions = notes.new_diff_notes.joins(:note_diff_file)
    .where('note_diff_files.old_path IN (?) OR note_diff_files.new_path IN (?)', paths, paths)
    .positions

  collection = Gitlab::Diff::PositionCollection.new(positions, diff_head_sha)

  return collection unless user

  positions = draft_notes
    .authored_by(user)
    .positions
    .select { |pos| paths.include?(pos.file_path) }

  collection.concat(positions)
end

#notify_conflict?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1218

def notify_conflict?
  (opened? || locked?) &&
    has_commits? &&
    !branch_missing? &&
    !project.repository.can_be_merged?(diff_head_sha, target_branch)
rescue Gitlab::Git::CommandError
  # Checking mergeability can trigger exception, e.g. non-utf8
  # We ignore this type of errors.
  false
end

#permits_force_push?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 485

def permits_force_push?
  return true unless ProtectedBranch.protected?(source_project, source_branch)

  ProtectedBranch.allow_force_push?(source_project, source_branch)
end

#pipeline_coverage_deltaObject


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# File 'app/models/merge_request.rb', line 1848

def pipeline_coverage_delta
  if base_pipeline&.coverage && head_pipeline&.coverage
    head_pipeline.coverage - base_pipeline.coverage
  end
end

#predefined_variablesObject


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# File 'app/models/merge_request.rb', line 1567

def predefined_variables
  Gitlab::Ci::Variables::Collection.new.tap do |variables|
    variables.append(key: 'CI_MERGE_REQUEST_ID', value: id.to_s)
    variables.append(key: 'CI_MERGE_REQUEST_IID', value: iid.to_s)
    variables.append(key: 'CI_MERGE_REQUEST_REF_PATH', value: ref_path.to_s)
    variables.append(key: 'CI_MERGE_REQUEST_PROJECT_ID', value: project.id.to_s)
    variables.append(key: 'CI_MERGE_REQUEST_PROJECT_PATH', value: project.full_path)
    variables.append(key: 'CI_MERGE_REQUEST_PROJECT_URL', value: project.web_url)
    variables.append(key: 'CI_MERGE_REQUEST_TARGET_BRANCH_NAME', value: target_branch.to_s)
    variables.append(key: 'CI_MERGE_REQUEST_TITLE', value: title)
    variables.append(key: 'CI_MERGE_REQUEST_ASSIGNEES', value: assignee_username_list) if assignees.present?
    variables.append(key: 'CI_MERGE_REQUEST_MILESTONE', value: milestone.title) if milestone
    variables.append(key: 'CI_MERGE_REQUEST_LABELS', value: label_names.join(',')) if labels.present?
    variables.concat(source_project_variables)
  end
end

#preloads_discussion_diff_highlighting?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 767

def preloads_discussion_diff_highlighting?
  true
end

#public_merge_statusObject

Returns current merge_status except it returns `cannot_be_merged_rechecking` as `checking` to avoid exposing unnecessary internal state


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# File 'app/models/merge_request.rb', line 247

def public_merge_status
  cannot_be_merged_rechecking? || preparing? ? 'checking' : merge_status
end

#raw_diffs(*args) ⇒ Object


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# File 'app/models/merge_request.rb', line 731

def raw_diffs(*args)
  compare.present? ? compare.raw_diffs(*args) : merge_request_diff.raw_diffs(*args)
end

#rebase_async(user_id, skip_ci: false) ⇒ Object

Set off a rebase asynchronously, atomically updating the `rebase_jid` of the MR so that the status of the operation can be tracked.


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# File 'app/models/merge_request.rb', line 697

def rebase_async(user_id, skip_ci: false)
  with_rebase_lock do
    raise ActiveRecord::StaleObjectError if !open? || rebase_in_progress?

    # Although there is a race between setting rebase_jid here and clearing it
    # in the RebaseWorker, it can't do any harm since we check both that the
    # attribute is set *and* that the sidekiq job is still running. So a JID
    # for a completed RebaseWorker is equivalent to a nil JID.
    jid = Sidekiq::Worker.skipping_transaction_check do
      RebaseWorker.with_status.perform_async(id, user_id, skip_ci)
    end

    update_column(:rebase_jid, jid)
  end

  # rebase_in_progress? depends on rebase_jid
  # expire etag cache since the attribute is changed without triggering callbacks
  expire_etag_cache
end

#rebase_in_progress?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 481

def rebase_in_progress?
  rebase_jid.present? && Gitlab::SidekiqStatus.running?(rebase_jid)
end

#recent_commits(load_from_gitaly: false) ⇒ Object


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# File 'app/models/merge_request.rb', line 652

def recent_commits(load_from_gitaly: false)
  commits(limit: MergeRequestDiff::COMMITS_SAFE_SIZE, load_from_gitaly: load_from_gitaly)
end

#recent_context_commitsObject


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# File 'app/models/merge_request.rb', line 631

def recent_context_commits
  context_commits(limit: MergeRequestDiff::COMMITS_SAFE_SIZE)
end

#recent_diff_head_shas(limit = 100) ⇒ Object


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# File 'app/models/merge_request.rb', line 1721

def recent_diff_head_shas(limit = 100)
  merge_request_diffs.recent(limit).pluck(:head_commit_sha)
end

#recent_visible_deploymentsObject


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# File 'app/models/merge_request.rb', line 1920

def recent_visible_deployments
  deployments.visible.includes(:environment).order(id: :desc).limit(10)
end

#recheck_merge_status?Boolean

Returns boolean indicating the merge_status should be rechecked in order to switch to either can_be_merged or cannot_be_merged.

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1117

def recheck_merge_status?
  self.class.state_machines[:merge_status].check_state?(merge_status)
end

#ref_pathObject


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# File 'app/models/merge_request.rb', line 1479

def ref_path
  "refs/#{Repository::REF_MERGE_REQUEST}/#{iid}/head"
end

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# File 'app/models/merge_request.rb', line 1229

def related_notes
  # We're using a UNION ALL here since this results in better performance
  # compared to using OR statements. We're using UNION ALL since the queries
  # used won't produce any duplicates (e.g. a note for a commit can't also be
  # a note for an MR).
  Note
    .from_union([notes, commit_notes], remove_duplicates: false)
    .includes(:noteable)
end

#reload_diff(current_user = nil) ⇒ Object

rubocop: disable CodeReuse/ServiceClass


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# File 'app/models/merge_request.rb', line 1092

def reload_diff(current_user = nil)
  return unless open?

  MergeRequests::ReloadDiffsService.new(self, current_user).execute
end

#reload_diff_if_branch_changedObject


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# File 'app/models/merge_request.rb', line 1084

def reload_diff_if_branch_changed
  if (saved_change_to_source_branch? || saved_change_to_target_branch?) &&
      (source_branch_head && target_branch_head)
    reload_diff
  end
end

#remove_source_branch?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1214

def remove_source_branch?
  should_remove_source_branch? || force_remove_source_branch?
end

#reopenable?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1007

def reopenable?
  closed? && !source_project_missing? && source_branch_exists?
end

#repository_diff_refsObject

Instead trying to fetch the persisted diff_refs, this method goes straight to the repository to get the most recent data possible.


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# File 'app/models/merge_request.rb', line 921

def repository_diff_refs
  Gitlab::Diff::DiffRefs.new(
    base_sha:  branch_merge_base_sha,
    start_sha: target_branch_sha,
    head_sha:  source_branch_sha
  )
end

#short_merge_commit_shaObject


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# File 'app/models/merge_request.rb', line 1745

def short_merge_commit_sha
  Commit.truncate_sha(merge_commit_sha) if merge_commit_sha
end

#short_merged_commit_shaObject


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# File 'app/models/merge_request.rb', line 1756

def short_merged_commit_sha
  if sha = merged_commit_sha
    Commit.truncate_sha(sha)
  end
end

#should_be_rebased?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1180

def should_be_rebased?
  project.ff_merge_must_be_possible? && !ff_merge_possible?
end

#should_remove_source_branch?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1196

def should_remove_source_branch?
  Gitlab::Utils.to_boolean(merge_params['should_remove_source_branch'])
end

#source_branch_exists?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1351

def source_branch_exists?
  return false unless self.source_project

  self.source_project.repository.branch_exists?(self.source_branch)
end

#source_branch_headObject


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# File 'app/models/merge_request.rb', line 878

def source_branch_head
  strong_memoize(:source_branch_head) do
    if source_project && source_branch_ref
      source_project.repository.commit(source_branch_ref)
    end
  end
end

#source_branch_refObject


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# File 'app/models/merge_request.rb', line 864

def source_branch_ref
  return @source_branch_sha if @source_branch_sha
  return unless source_branch

  Gitlab::Git::BRANCH_REF_PREFIX + source_branch
end

#source_project_missing?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1000

def source_project_missing?
  return false unless for_fork?
  return true unless source_project

  !source_project.in_fork_network_of?(target_project)
end

#source_project_namespaceObject


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# File 'app/models/merge_request.rb', line 1335

def source_project_namespace
  if source_project && source_project.namespace
    source_project.namespace.full_path
  else
    "(removed)"
  end
end

#source_project_pathObject


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# File 'app/models/merge_request.rb', line 1327

def source_project_path
  if source_project
    source_project.full_path
  else
    "(removed)"
  end
end

#squash_on_merge?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1402

def squash_on_merge?
  return true if target_project.squash_always?
  return false if target_project.squash_never?

  squash?
end

#supports_assignee?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1941

def supports_assignee?
  true
end

#supports_suggestion?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 679

def supports_suggestion?
  true
end

#target_branch_exists?Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1357

def target_branch_exists?
  return false unless self.target_project

  self.target_project.repository.branch_exists?(self.target_branch)
end

#target_branch_headObject


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# File 'app/models/merge_request.rb', line 886

def target_branch_head
  strong_memoize(:target_branch_head) do
    target_project.repository.commit(target_branch_ref)
  end
end

#target_branch_refObject


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# File 'app/models/merge_request.rb', line 871

def target_branch_ref
  return @target_branch_sha if @target_branch_sha
  return unless target_branch

  Gitlab::Git::BRANCH_REF_PREFIX + target_branch
end

#target_project_namespaceObject


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# File 'app/models/merge_request.rb', line 1343

def target_project_namespace
  if target_project && target_project.namespace
    target_project.namespace.full_path
  else
    "(removed)"
  end
end

#target_project_pathObject


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# File 'app/models/merge_request.rb', line 1319

def target_project_path
  if target_project
    target_project.full_path
  else
    "(removed)"
  end
end

#to_reference(from = nil, full: false) ⇒ Object

`from` argument can be a Namespace or Project.


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# File 'app/models/merge_request.rb', line 621

def to_reference(from = nil, full: false)
  reference = "#{self.class.reference_prefix}#{iid}"

  "#{project.to_reference_base(from, full: full)}#{reference}"
end

#train_ref_pathObject


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# File 'app/models/merge_request.rb', line 1487

def train_ref_path
  "refs/#{Repository::REF_MERGE_REQUEST}/#{iid}/train"
end

#update_and_mark_in_progress_merge_commit_sha(commit_id) ⇒ Object


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# File 'app/models/merge_request.rb', line 1515

def update_and_mark_in_progress_merge_commit_sha(commit_id)
  self.update(in_progress_merge_commit_sha: commit_id)
  # Since another process checks for matching merge request, we need
  # to make it possible to detect whether the query should go to the
  # primary.
  target_project.mark_primary_write_location
end

#update_diff_discussion_positions(old_diff_refs:, new_diff_refs:, current_user: nil) ⇒ Object

rubocop: disable CodeReuse/ServiceClass


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# File 'app/models/merge_request.rb', line 1797

def update_diff_discussion_positions(old_diff_refs:, new_diff_refs:, current_user: nil)
  return unless has_complete_diff_refs?
  return if new_diff_refs == old_diff_refs

  active_diff_discussions = self.notes.new_diff_notes.discussions.select do |discussion|
    discussion.active?(old_diff_refs)
  end
  return if active_diff_discussions.empty?

  paths = active_diff_discussions.flat_map { |n| n.diff_file.paths }.uniq

  active_discussions_resolved = active_diff_discussions.all?(&:resolved?)

  service = Discussions::UpdateDiffPositionService.new(
    self.project,
    current_user,
    old_diff_refs: old_diff_refs,
    new_diff_refs: new_diff_refs,
    paths: paths
  )

  active_diff_discussions.each do |discussion|
    service.execute(discussion)
    discussion.clear_memoized_values
  end

  # If they were all already resolved, this method will have already been called.
  # If they all don't get resolved, we don't need to call the method
  # If they go from unresolved -> resolved, then we call the method
  if !active_discussions_resolved &&
      active_diff_discussions.all?(&:resolved?) &&
      project.resolve_outdated_diff_discussions?
    MergeRequests::ResolvedDiscussionNotificationService
      .new(project: project, current_user: current_user)
      .execute(self)
  end
end

#update_head_pipelineObject


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# File 'app/models/merge_request.rb', line 1556

def update_head_pipeline
  find_actual_head_pipeline.try do |pipeline|
    self.head_pipeline = pipeline
    update_column(:head_pipeline_id, head_pipeline.id) if head_pipeline_id_changed?
  end
end

#update_project_counter_cachesObject

rubocop: disable CodeReuse/ServiceClass


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# File 'app/models/merge_request.rb', line 1879

def update_project_counter_caches
  Projects::OpenMergeRequestsCountService.new(target_project).refresh_cache
end

#use_merge_base_pipeline_for_comparison?(service_class) ⇒ Boolean

Returns:

  • (Boolean)

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# File 'app/models/merge_request.rb', line 1854

def use_merge_base_pipeline_for_comparison?(service_class)
  ALLOWED_TO_USE_MERGE_BASE_PIPELINE_FOR_COMPARISON[service_class]&.call(project)
end

#validate_branch_name(attr) ⇒ Object


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# File 'app/models/merge_request.rb', line 963

def validate_branch_name(attr)
  return unless will_save_change_to_attribute?(attr)

  branch = read_attribute(attr)

  return unless branch

  errors.add(attr) unless Gitlab::GitRefValidator.validate_merge_request_branch(branch)
end

#validate_branchesObject


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# File 'app/models/merge_request.rb', line 933

def validate_branches
  return unless target_project && source_project

  if target_project == source_project && target_branch == source_branch
    errors.add :branch_conflict, "You can't use same project/branch for source and target"
    return
  end

  [:source_branch, :target_branch].each { |attr| validate_branch_name(attr) }

  if opened?
    similar_mrs = target_project
      .merge_requests
      .where(source_branch: source_branch, target_branch: target_branch)
      .where(source_project_id: source_project&.id)
      .opened

    similar_mrs = similar_mrs.where.not(id: id) if persisted?

    conflict = similar_mrs.first

    if conflict.present?
      errors.add(
        :validate_branches,
        "Another open merge request already exists for this source branch: #{conflict.to_reference}"
      )
    end
  end
end

#validate_forkObject


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# File 'app/models/merge_request.rb', line 979

def validate_fork
  return true unless target_project && source_project
  return true if target_project == source_project
  return true unless source_project_missing?

  errors.add :validate_fork,
             'Source project is not a fork of the target project'
end

#validate_target_projectObject


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# File 'app/models/merge_request.rb', line 973

def validate_target_project
  return true if target_project.merge_requests_enabled?

  errors.add :base, 'Target project has disabled merge requests'
end

#version_params_for(diff_refs) ⇒ Object


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# File 'app/models/merge_request.rb', line 1066

def version_params_for(diff_refs)
  if diff = merge_request_diff_for(diff_refs)
    { diff_id: diff.id }
  elsif diff = merge_request_diff_for(diff_refs.head_sha)
    {
      diff_id: diff.id,
      start_sha: diff_refs.start_sha
    }
  end
end

#viewable_diffsObject


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# File 'app/models/merge_request.rb', line 1045

def viewable_diffs
  @viewable_diffs ||= merge_request_diffs.viewable.to_a
end

#visible_closing_issues_for(current_user = self.author) ⇒ Object


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# File 'app/models/merge_request.rb', line 1285

def visible_closing_issues_for(current_user = self.author)
  strong_memoize(:visible_closing_issues_for) do
    if self.target_project.has_external_issue_tracker?
      closes_issues(current_user)
    else
      cached_closes_issues.select do |issue|
        Ability.allowed?(current_user, :read_issue, issue)
      end
    end
  end
end