debian-mirror-gitlab/app/models/merge_request.rb

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class MergeRequest < ActiveRecord::Base
include InternalId
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include Issuable
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include Noteable
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include Referable
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include Sortable
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include IgnorableColumn
include CreatedAtFilterable
ignore_column :position
ignore_column :locked_at
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belongs_to :target_project, class_name: "Project"
belongs_to :source_project, class_name: "Project"
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belongs_to :merge_user, class_name: "User"
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has_many :merge_request_diffs
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has_one :merge_request_diff,
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-> { order('merge_request_diffs.id DESC') }, inverse_of: :merge_request
belongs_to :head_pipeline, foreign_key: "head_pipeline_id", class_name: "Ci::Pipeline"
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has_many :events, as: :target, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
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has_many :merge_requests_closing_issues,
class_name: 'MergeRequestsClosingIssues',
dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
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belongs_to :assignee, class_name: "User"
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serialize :merge_params, Hash # rubocop:disable Cop/ActiveRecordSerialize
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after_create :ensure_merge_request_diff, unless: :importing?
after_update :reload_diff_if_branch_changed
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# When this attribute is true some MR validation is ignored
# It allows us to close or modify broken merge requests
attr_accessor :allow_broken
# Temporary fields to store compare vars
# when creating new merge request
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attr_accessor :can_be_created, :compare_commits, :diff_options, :compare
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state_machine :state, initial: :opened do
event :close do
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transition [:opened] => :closed
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end
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event :mark_as_merged do
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transition [:opened, :locked] => :merged
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end
event :reopen do
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transition closed: :opened
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end
event :lock_mr do
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transition [:opened] => :locked
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end
event :unlock_mr do
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transition locked: :opened
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end
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state :opened
state :closed
state :merged
state :locked
end
state_machine :merge_status, initial: :unchecked do
event :mark_as_unchecked do
transition [:can_be_merged, :cannot_be_merged] => :unchecked
end
event :mark_as_mergeable do
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transition [:unchecked, :cannot_be_merged] => :can_be_merged
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end
event :mark_as_unmergeable do
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transition [:unchecked, :can_be_merged] => :cannot_be_merged
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end
state :unchecked
state :can_be_merged
state :cannot_be_merged
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around_transition do |merge_request, transition, block|
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Gitlab::Timeless.timeless(merge_request, &block)
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end
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end
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validates :source_project, presence: true, unless: [:allow_broken, :importing?, :closed_without_fork?]
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validates :source_branch, presence: true
validates :target_project, presence: true
validates :target_branch, presence: true
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validates :merge_user, presence: true, if: :merge_when_pipeline_succeeds?, unless: :importing?
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validate :validate_branches, unless: [:allow_broken, :importing?, :closed_without_fork?]
validate :validate_fork, unless: :closed_without_fork?
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validate :validate_target_project, on: :create
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scope :by_source_or_target_branch, ->(branch_name) do
where("source_branch = :branch OR target_branch = :branch", branch: branch_name)
end
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scope :by_milestone, ->(milestone) { where(milestone_id: milestone) }
scope :of_projects, ->(ids) { where(target_project_id: ids) }
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scope :from_project, ->(project) { where(source_project_id: project.id) }
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scope :merged, -> { with_state(:merged) }
scope :closed_and_merged, -> { with_states(:closed, :merged) }
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scope :from_source_branches, ->(branches) { where(source_branch: branches) }
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scope :join_project, -> { joins(:target_project) }
scope :references_project, -> { references(:target_project) }
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scope :assigned, -> { where("assignee_id IS NOT NULL") }
scope :unassigned, -> { where("assignee_id IS NULL") }
scope :assigned_to, ->(u) { where(assignee_id: u.id)}
participant :assignee
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after_save :keep_around_commit
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def self.reference_prefix
'!'
end
# Pattern used to extract `!123` merge request references from text
#
# This pattern supports cross-project references.
def self.reference_pattern
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@reference_pattern ||= %r{
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(#{Project.reference_pattern})?
#{Regexp.escape(reference_prefix)}(?<merge_request>\d+)
}x
end
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def self.link_reference_pattern
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@link_reference_pattern ||= super("merge_requests", /(?<merge_request>\d+)/)
end
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def self.reference_valid?(reference)
reference.to_i > 0 && reference.to_i <= Gitlab::Database::MAX_INT_VALUE
end
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def self.project_foreign_key
'target_project_id'
end
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# 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.
def self.in_projects(relation)
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# unscoping unnecessary conditions that'll be applied
# when executing `where("merge_requests.id IN (#{union.to_sql})")`
source = unscoped.where(source_project_id: relation).select(:id)
target = unscoped.where(target_project_id: relation).select(:id)
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union = Gitlab::SQL::Union.new([source, target])
where("merge_requests.id IN (#{union.to_sql})")
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end
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WIP_REGEX = /\A\s*(\[WIP\]\s*|WIP:\s*|WIP\s+)+\s*/i.freeze
def self.work_in_progress?(title)
!!(title =~ WIP_REGEX)
end
def self.wipless_title(title)
title.sub(WIP_REGEX, "")
end
def self.wip_title(title)
work_in_progress?(title) ? title : "WIP: #{title}"
end
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# Returns a Hash of attributes to be used for Twitter card metadata
def card_attributes
{
'Author' => author.try(:name),
'Assignee' => assignee.try(:name)
}
end
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# These method are needed for compatibility with issues to not mess view and other code
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def assignees
Array(assignee)
end
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def assignee_ids
Array(assignee_id)
end
def assignee_ids=(ids)
write_attribute(:assignee_id, ids.last)
end
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def assignee_or_author?(user)
author_id == user.id || assignee_id == user.id
end
# `from` argument can be a Namespace or Project.
def to_reference(from = nil, full: false)
reference = "#{self.class.reference_prefix}#{iid}"
"#{project.to_reference(from, full: full)}#{reference}"
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end
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def commits
if persisted?
merge_request_diff.commits
elsif compare_commits
compare_commits.reverse
else
[]
end
end
def commits_count
if persisted?
merge_request_diff.commits_count
elsif compare_commits
compare_commits.size
else
0
end
end
def commit_shas
if persisted?
merge_request_diff.commit_shas
elsif compare_commits
compare_commits.reverse.map(&:sha)
else
[]
end
end
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def first_commit
merge_request_diff ? merge_request_diff.first_commit : compare_commits.first
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end
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def raw_diffs(*args)
merge_request_diff ? merge_request_diff.raw_diffs(*args) : compare.raw_diffs(*args)
end
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def diffs(diff_options = {})
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if compare
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# When saving MR diffs, `expanded` is implicitly added (because we need
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# to save the entire contents to the DB), so add that here for
# consistency.
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compare.diffs(diff_options.merge(expanded: true))
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else
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merge_request_diff.diffs(diff_options)
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end
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end
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def diff_size
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# Calling `merge_request_diff.diffs.real_size` will also perform
# highlighting, which we don't need here.
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merge_request_diff&.real_size || diffs.real_size
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end
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def diff_base_commit
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if persisted?
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merge_request_diff.base_commit
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else
branch_merge_base_commit
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end
end
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def diff_start_commit
if persisted?
merge_request_diff.start_commit
else
target_branch_head
end
end
def diff_head_commit
if persisted?
merge_request_diff.head_commit
else
source_branch_head
end
end
def diff_start_sha
diff_start_commit.try(:sha)
end
def diff_base_sha
diff_base_commit.try(:sha)
end
def diff_head_sha
diff_head_commit.try(:sha)
end
# When importing a pull request from GitHub, the old and new branches may no
# longer actually exist by those names, but we need to recreate the merge
# request diff with the right source and target shas.
# We use these attributes to force these to the intended values.
attr_writer :target_branch_sha, :source_branch_sha
def source_branch_head
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return unless source_project
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source_branch_ref = @source_branch_sha || source_branch
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source_project.repository.commit(source_branch_ref) if source_branch_ref
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end
def target_branch_head
target_branch_ref = @target_branch_sha || target_branch
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target_project.repository.commit(target_branch_ref) if target_branch_ref
end
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
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end
def target_branch_sha
@target_branch_sha || target_branch_head.try(:sha)
end
def source_branch_sha
@source_branch_sha || source_branch_head.try(:sha)
end
def diff_refs
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if persisted?
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merge_request_diff.diff_refs
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else
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Gitlab::Diff::DiffRefs.new(
base_sha: diff_base_sha,
start_sha: diff_start_sha,
head_sha: diff_head_sha
)
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end
end
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def branch_merge_base_sha
branch_merge_base_commit.try(:sha)
end
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def validate_branches
if target_project == source_project && target_branch == source_branch
errors.add :branch_conflict, "You can not use same project/branch for source and target"
end
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if opened?
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similar_mrs = self.target_project.merge_requests.where(source_branch: source_branch, target_branch: target_branch, source_project_id: source_project.try(:id)).opened
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similar_mrs = similar_mrs.where('id not in (?)', self.id) if self.id
if similar_mrs.any?
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errors.add :validate_branches,
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"Cannot Create: This merge request already exists: #{similar_mrs.pluck(:title)}"
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end
end
end
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def validate_target_project
return true if target_project.merge_requests_enabled?
errors.add :base, 'Target project has disabled merge requests'
end
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def validate_fork
return true unless target_project && source_project
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return true if target_project == source_project
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return true unless source_project_missing?
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errors.add :validate_fork,
'Source project is not a fork of the target project'
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end
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def merge_ongoing?
return false unless merge_jid
Gitlab::SidekiqStatus.num_running([merge_jid]) > 0
end
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def closed_without_fork?
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closed? && source_project_missing?
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end
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def source_project_missing?
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return false unless for_fork?
return true unless source_project
!source_project.forked_from?(target_project)
end
def reopenable?
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closed? && !source_project_missing? && source_branch_exists?
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end
def ensure_merge_request_diff
merge_request_diff || create_merge_request_diff
end
def create_merge_request_diff
merge_request_diffs.create
reload_merge_request_diff
end
def reload_merge_request_diff
merge_request_diff(true)
end
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def merge_request_diff_for(diff_refs_or_sha)
@merge_request_diffs_by_diff_refs_or_sha ||= Hash.new do |h, diff_refs_or_sha|
diffs = merge_request_diffs.viewable.select_without_diff
h[diff_refs_or_sha] =
if diff_refs_or_sha.is_a?(Gitlab::Diff::DiffRefs)
diffs.find_by_diff_refs(diff_refs_or_sha)
else
diffs.find_by(head_commit_sha: diff_refs_or_sha)
end
end
@merge_request_diffs_by_diff_refs_or_sha[diff_refs_or_sha]
end
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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
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def reload_diff_if_branch_changed
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if source_branch_changed? || target_branch_changed?
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reload_diff
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end
end
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def reload_diff(current_user = nil)
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return unless open?
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old_diff_refs = self.diff_refs
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create_merge_request_diff
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MergeRequests::MergeRequestDiffCacheService.new.execute(self)
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new_diff_refs = self.diff_refs
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update_diff_discussion_positions(
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old_diff_refs: old_diff_refs,
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new_diff_refs: new_diff_refs,
current_user: current_user
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)
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end
def check_if_can_be_merged
return unless unchecked?
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can_be_merged =
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!broken? && project.repository.can_be_merged?(diff_head_sha, target_branch)
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if can_be_merged
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mark_as_mergeable
else
mark_as_unmergeable
end
end
def merge_event
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@merge_event ||= target_project.events.where(target_id: self.id, target_type: "MergeRequest", action: Event::MERGED).last
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end
def closed_event
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@closed_event ||= target_project.events.where(target_id: self.id, target_type: "MergeRequest", action: Event::CLOSED).last
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end
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def work_in_progress?
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self.class.work_in_progress?(title)
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end
def wipless_title
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self.class.wipless_title(self.title)
end
def wip_title
self.class.wip_title(self.title)
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end
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def mergeable?(skip_ci_check: false)
return false unless mergeable_state?(skip_ci_check: skip_ci_check)
check_if_can_be_merged
can_be_merged?
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end
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def mergeable_state?(skip_ci_check: false)
return false unless open?
return false if work_in_progress?
return false if broken?
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return false unless skip_ci_check || mergeable_ci_state?
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return false unless mergeable_discussions_state?
true
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end
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def can_cancel_merge_when_pipeline_succeeds?(current_user)
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can_be_merged_by?(current_user) || self.author == current_user
end
def can_remove_source_branch?(current_user)
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!ProtectedBranch.protected?(source_project, source_branch) &&
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!source_project.root_ref?(source_branch) &&
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Ability.allowed?(current_user, :push_code, source_project) &&
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diff_head_commit == source_branch_head
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end
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def should_remove_source_branch?
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Gitlab::Utils.to_boolean(merge_params['should_remove_source_branch'])
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end
def force_remove_source_branch?
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Gitlab::Utils.to_boolean(merge_params['force_remove_source_branch'])
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end
def remove_source_branch?
should_remove_source_branch? || force_remove_source_branch?
end
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def related_notes
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# Fetch comments only from last 100 commits
commits_for_notes_limit = 100
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commit_ids = commit_shas.take(commits_for_notes_limit)
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Note.where(
"(project_id = :target_project_id AND noteable_type = 'MergeRequest' AND noteable_id = :mr_id) OR" +
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"((project_id = :source_project_id OR project_id = :target_project_id) AND noteable_type = 'Commit' AND commit_id IN (:commit_ids))",
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mr_id: id,
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commit_ids: commit_ids,
target_project_id: target_project_id,
source_project_id: source_project_id
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)
end
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alias_method :discussion_notes, :related_notes
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def mergeable_discussions_state?
return true unless project.only_allow_merge_if_all_discussions_are_resolved?
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!discussions_to_be_resolved?
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end
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def hook_attrs
attrs = {
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source: source_project.try(:hook_attrs),
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target: target_project.hook_attrs,
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last_commit: nil,
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work_in_progress: work_in_progress?,
total_time_spent: total_time_spent,
human_total_time_spent: human_total_time_spent,
human_time_estimate: human_time_estimate
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}
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if diff_head_commit
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attrs[:last_commit] = diff_head_commit.hook_attrs
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end
attributes.merge!(attrs)
end
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def for_fork?
target_project != source_project
end
def project
target_project
end
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# 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.
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# This optimization does not apply to issues from external sources.
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def cache_merge_request_closes_issues!(current_user)
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return unless project.issues_enabled?
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transaction do
self.merge_requests_closing_issues.delete_all
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closes_issues(current_user).each do |issue|
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next if issue.is_a?(ExternalIssue)
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self.merge_requests_closing_issues.create!(issue: issue)
end
end
end
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# Return the set of issues that will be closed if this merge request is accepted.
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def closes_issues(current_user = self.author)
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if target_branch == project.default_branch
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messages = [title, description]
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messages.concat(commits.map(&:safe_message)) if merge_request_diff
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Gitlab::ClosingIssueExtractor.new(project, current_user)
.closed_by_message(messages.join("\n"))
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else
[]
end
end
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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 - closes_issues(current_user)
end
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def target_project_path
if target_project
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target_project.full_path
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else
"(removed)"
end
end
def source_project_path
if source_project
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source_project.full_path
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else
"(removed)"
end
end
def source_project_namespace
if source_project && source_project.namespace
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source_project.namespace.full_path
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else
"(removed)"
end
end
def target_project_namespace
if target_project && target_project.namespace
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target_project.namespace.full_path
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else
"(removed)"
end
end
def source_branch_exists?
return false unless self.source_project
self.source_project.repository.branch_names.include?(self.source_branch)
end
def target_branch_exists?
return false unless self.target_project
self.target_project.repository.branch_names.include?(self.target_branch)
end
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def merge_commit_message(include_description: false)
closes_issues_references = closes_issues.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?
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message << "See merge request #{to_reference}"
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message.join("\n\n")
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end
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def reset_merge_when_pipeline_succeeds
return unless merge_when_pipeline_succeeds?
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self.merge_when_pipeline_succeeds = false
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self.merge_user = nil
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if merge_params
merge_params.delete('should_remove_source_branch')
merge_params.delete('commit_message')
end
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self.save
end
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# Return array of possible target branches
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# depends on target project of MR
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def target_branches
if target_project.nil?
[]
else
target_project.repository.branch_names
end
end
# Return array of possible source branches
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# depends on source project of MR
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def source_branches
if source_project.nil?
[]
else
source_project.repository.branch_names
end
end
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def has_ci?
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has_ci_integration = source_project.try(:ci_service)
uses_gitlab_ci = all_pipelines.any?
(has_ci_integration || uses_gitlab_ci) && commits.any?
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end
def branch_missing?
!source_branch_exists? || !target_branch_exists?
end
def broken?
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has_no_commits? || branch_missing? || cannot_be_merged?
end
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def can_be_merged_by?(user)
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access = ::Gitlab::UserAccess.new(user, project: project)
access.can_push_to_branch?(target_branch) || access.can_merge_to_branch?(target_branch)
end
def can_be_merged_via_command_line_by?(user)
access = ::Gitlab::UserAccess.new(user, project: project)
access.can_push_to_branch?(target_branch)
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end
def mergeable_ci_state?
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return true unless project.only_allow_merge_if_pipeline_succeeds?
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!head_pipeline || head_pipeline.success? || head_pipeline.skipped?
end
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def environments_for(current_user)
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return [] unless diff_head_commit
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@environments ||= Hash.new do |h, current_user|
envs = EnvironmentsFinder.new(target_project, current_user,
ref: target_branch, commit: diff_head_commit, with_tags: true).execute
if source_project
envs.concat EnvironmentsFinder.new(source_project, current_user,
ref: source_branch, commit: diff_head_commit).execute
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end
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h[current_user] = envs.uniq
end
@environments[current_user]
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end
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def state_human_name
if merged?
"Merged"
elsif closed?
"Closed"
else
"Open"
end
end
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def state_icon_name
if merged?
"check"
elsif closed?
"times"
else
"circle-o"
end
end
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def fetch_ref
target_project.repository.fetch_ref(
source_project.repository.path_to_repo,
"refs/heads/#{source_branch}",
ref_path
)
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update_column(:ref_fetched, true)
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end
def ref_path
"refs/merge-requests/#{iid}/head"
end
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def ref_fetched?
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super ||
begin
computed_value = project.repository.ref_exists?(ref_path)
update_column(:ref_fetched, true) if computed_value
computed_value
end
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end
def ensure_ref_fetched
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fetch_ref unless ref_fetched?
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end
def in_locked_state
begin
lock_mr
yield
ensure
unlock_mr if locked?
end
end
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def diverged_commits_count
cache = Rails.cache.read(:"merge_request_#{id}_diverged_commits")
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if cache.blank? || cache[:source_sha] != source_branch_sha || cache[:target_sha] != target_branch_sha
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cache = {
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source_sha: source_branch_sha,
target_sha: target_branch_sha,
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diverged_commits_count: compute_diverged_commits_count
}
Rails.cache.write(:"merge_request_#{id}_diverged_commits", cache)
end
cache[:diverged_commits_count]
end
def compute_diverged_commits_count
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return 0 unless source_branch_sha && target_branch_sha
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Gitlab::Git::Commit.between(target_project.repository.raw_repository, source_branch_sha, target_branch_sha).size
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end
private :compute_diverged_commits_count
def diverged_from_target_branch?
diverged_commits_count > 0
end
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def all_pipelines
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return Ci::Pipeline.none unless source_project
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@all_pipelines ||= source_project.pipelines
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.where(sha: all_commit_shas, ref: source_branch)
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.order(id: :desc)
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end
# Note that this could also return SHA from now dangling commits
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#
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def all_commit_shas
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if persisted?
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column_shas = MergeRequestDiffCommit.where(merge_request_diff: merge_request_diffs).pluck('DISTINCT(sha)')
serialised_shas = merge_request_diffs.where.not(st_commits: nil).flat_map(&:commit_shas)
(column_shas + serialised_shas).uniq
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elsif compare_commits
compare_commits.to_a.reverse.map(&:id)
else
[diff_head_sha]
end
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end
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def merge_commit
@merge_commit ||= project.commit(merge_commit_sha) if merge_commit_sha
end
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def can_be_reverted?(current_user)
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merge_commit && !merge_commit.has_been_reverted?(current_user, self)
end
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def can_be_cherry_picked?
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merge_commit.present?
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end
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def has_complete_diff_refs?
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diff_refs && diff_refs.complete?
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end
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def update_diff_discussion_positions(old_diff_refs:, new_diff_refs:, current_user: nil)
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return unless has_complete_diff_refs?
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return if new_diff_refs == old_diff_refs
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active_diff_discussions = self.notes.new_diff_notes.discussions.select do |discussion|
discussion.active?(old_diff_refs)
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end
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return if active_diff_discussions.empty?
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paths = active_diff_discussions.flat_map { |n| n.diff_file.paths }.uniq
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service = Discussions::UpdateDiffPositionService.new(
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self.project,
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current_user,
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old_diff_refs: old_diff_refs,
new_diff_refs: new_diff_refs,
paths: paths
)
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active_diff_discussions.each do |discussion|
service.execute(discussion)
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end
end
def keep_around_commit
project.repository.keep_around(self.merge_commit_sha)
end
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def has_commits?
merge_request_diff && commits_count > 0
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end
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def has_no_commits?
!has_commits?
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end
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def mergeable_with_quick_action?(current_user, autocomplete_precheck: false, last_diff_sha: nil)
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return false unless can_be_merged_by?(current_user)
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return true if autocomplete_precheck
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return false unless mergeable?(skip_ci_check: true)
return false if head_pipeline && !(head_pipeline.success? || head_pipeline.active?)
return false if last_diff_sha != diff_head_sha
true
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end
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end