879 lines
23 KiB
Ruby
879 lines
23 KiB
Ruby
class MergeRequest < ActiveRecord::Base
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include InternalId
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include Issuable
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include Referable
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include Sortable
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include Importable
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belongs_to :target_project, class_name: "Project"
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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, dependent: :destroy
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has_one :merge_request_diff,
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-> { order('merge_request_diffs.id DESC') }
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has_many :events, as: :target, dependent: :destroy
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has_many :merge_requests_closing_issues, class_name: 'MergeRequestsClosingIssues', dependent: :delete_all
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serialize :merge_params, Hash
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after_create :ensure_merge_request_diff, unless: :importing?
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after_update :reload_diff_if_branch_changed
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delegate :commits, :real_size, to: :merge_request_diff, prefix: nil
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# When this attribute is true some MR validation is ignored
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# It allows us to close or modify broken merge requests
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attr_accessor :allow_broken
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# Temporary fields to store compare vars
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# 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
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event :close do
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transition [:reopened, :opened] => :closed
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end
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event :mark_as_merged do
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transition [:reopened, :opened, :locked] => :merged
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end
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event :reopen do
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transition closed: :reopened
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end
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event :lock_mr do
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transition [:reopened, :opened] => :locked
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end
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event :unlock_mr do
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transition locked: :reopened
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end
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after_transition any => :locked do |merge_request, transition|
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merge_request.locked_at = Time.now
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merge_request.save
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end
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after_transition locked: (any - :locked) do |merge_request, transition|
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merge_request.locked_at = nil
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merge_request.save
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end
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state :opened
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state :reopened
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state :closed
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state :merged
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state :locked
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end
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state_machine :merge_status, initial: :unchecked do
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event :mark_as_unchecked do
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transition [:can_be_merged, :cannot_be_merged] => :unchecked
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end
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event :mark_as_mergeable do
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transition [:unchecked, :cannot_be_merged] => :can_be_merged
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end
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event :mark_as_unmergeable do
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transition [:unchecked, :can_be_merged] => :cannot_be_merged
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end
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state :unchecked
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state :can_be_merged
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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
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validates :target_project, presence: true
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validates :target_branch, presence: true
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validates :merge_user, presence: true, if: :merge_when_build_succeeds?
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validate :validate_branches, unless: [:allow_broken, :importing?, :closed_without_fork?]
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validate :validate_fork, unless: :closed_without_fork?
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scope :by_branch, ->(branch_name) { where("(source_branch LIKE :branch) OR (target_branch LIKE :branch)", branch: branch_name) }
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scope :cared, ->(user) { where('assignee_id = :user OR author_id = :user', user: user.id) }
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scope :by_milestone, ->(milestone) { where(milestone_id: milestone) }
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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) }
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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) }
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scope :references_project, -> { references(:target_project) }
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after_save :keep_around_commit
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def self.reference_prefix
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'!'
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end
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# Pattern used to extract `!123` merge request references from text
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#
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# This pattern supports cross-project references.
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def self.reference_pattern
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@reference_pattern ||= %r{
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(#{Project.reference_pattern})?
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#{Regexp.escape(reference_prefix)}(?<merge_request>\d+)
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}x
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end
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def self.link_reference_pattern
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@link_reference_pattern ||= super("merge_requests", /(?<merge_request>\d+)/)
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end
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def self.reference_valid?(reference)
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reference.to_i > 0 && reference.to_i <= Gitlab::Database::MAX_INT_VALUE
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end
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def self.project_foreign_key
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'target_project_id'
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end
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# Returns all the merge requests from an ActiveRecord:Relation.
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#
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# This method uses a UNION as it usually operates on the result of
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# ProjectsFinder#execute. PostgreSQL in particular doesn't always like queries
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# using multiple sub-queries especially when combined with an OR statement.
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# UNIONs on the other hand perform much better in these cases.
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#
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# relation - An ActiveRecord::Relation that returns a list of Projects.
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#
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# Returns an ActiveRecord::Relation.
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def self.in_projects(relation)
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source = where(source_project_id: relation).select(:id)
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target = where(target_project_id: relation).select(:id)
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union = Gitlab::SQL::Union.new([source, target])
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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
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def self.work_in_progress?(title)
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!!(title =~ WIP_REGEX)
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end
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def self.wipless_title(title)
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title.sub(WIP_REGEX, "")
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end
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def self.wip_title(title)
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work_in_progress?(title) ? title : "WIP: #{title}"
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end
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def to_reference(from_project = nil)
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reference = "#{self.class.reference_prefix}#{iid}"
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if cross_project_reference?(from_project)
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reference = project.to_reference + reference
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end
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reference
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end
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def first_commit
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merge_request_diff ? merge_request_diff.first_commit : compare_commits.first
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end
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def raw_diffs(*args)
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merge_request_diff ? merge_request_diff.raw_diffs(*args) : compare.raw_diffs(*args)
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end
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def diffs(diff_options = nil)
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if compare
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compare.diffs(diff_options)
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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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diffs(diff_options).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
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branch_merge_base_commit
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end
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end
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# MRs created before 8.4 don't store a MergeRequestDiff#base_commit_sha,
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# but we need to get a commit for the "View file @ ..." link by deleted files,
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# so we find the likely one if we can't get the actual one.
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# This will not be the actual base commit if the target branch was merged into
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# the source branch after the merge request was created, but it is good enough
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# for the specific purpose of linking to a commit.
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# It is not good enough for use in `Gitlab::Git::DiffRefs`, which needs the
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# true base commit, so we can't simply have `#diff_base_commit` fall back on
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# this method.
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def likely_diff_base_commit
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first_commit.parent || first_commit
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end
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def diff_start_commit
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if persisted?
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merge_request_diff.start_commit
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else
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target_branch_head
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end
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end
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def diff_head_commit
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if persisted?
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merge_request_diff.head_commit
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else
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source_branch_head
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end
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end
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def diff_start_sha
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diff_start_commit.try(:sha)
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end
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def diff_base_sha
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diff_base_commit.try(:sha)
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end
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def diff_head_sha
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diff_head_commit.try(:sha)
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end
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# When importing a pull request from GitHub, the old and new branches may no
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# longer actually exist by those names, but we need to recreate the merge
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# request diff with the right source and target shas.
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# We use these attributes to force these to the intended values.
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attr_writer :target_branch_sha, :source_branch_sha
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def source_branch_head
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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
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def target_branch_head
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target_branch_ref = @target_branch_sha || target_branch
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target_project.repository.commit(target_branch_ref) if target_branch_ref
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end
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def branch_merge_base_commit
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start_sha = target_branch_sha
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head_sha = source_branch_sha
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if start_sha && head_sha
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target_project.merge_base_commit(start_sha, head_sha)
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end
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end
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def target_branch_sha
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@target_branch_sha || target_branch_head.try(:sha)
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end
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def source_branch_sha
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@source_branch_sha || source_branch_head.try(:sha)
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end
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def diff_refs
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return unless diff_start_commit || diff_base_commit
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Gitlab::Diff::DiffRefs.new(
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base_sha: diff_base_sha,
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start_sha: diff_start_sha,
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head_sha: diff_head_sha
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)
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end
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# Return diff_refs instance trying to not touch the git repository
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def diff_sha_refs
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if merge_request_diff && merge_request_diff.diff_refs_by_sha?
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merge_request_diff.diff_refs
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else
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diff_refs
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end
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end
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def branch_merge_base_sha
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branch_merge_base_commit.try(:sha)
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end
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def validate_branches
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if target_project == source_project && target_branch == source_branch
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errors.add :branch_conflict, "You can not use same project/branch for source and target"
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end
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if opened? || reopened?
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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
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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
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end
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end
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def validate_fork
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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,
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'Source project is not a fork of the target project'
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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?
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return true unless source_project
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!source_project.forked_from?(target_project)
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end
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def reopenable?
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closed? && !source_project_missing? && source_branch_exists?
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end
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def ensure_merge_request_diff
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merge_request_diff || create_merge_request_diff
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end
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def create_merge_request_diff
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merge_request_diffs.create
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reload_merge_request_diff
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end
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def reload_merge_request_diff
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merge_request_diff(true)
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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
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end
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def reload_diff
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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_notes_positions(
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old_diff_refs: old_diff_refs,
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new_diff_refs: new_diff_refs
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)
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end
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def check_if_can_be_merged
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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
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else
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mark_as_unmergeable
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end
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end
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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
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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
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def wipless_title
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self.class.wipless_title(self.title)
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end
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def wip_title
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self.class.wip_title(self.title)
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end
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def mergeable?(skip_ci_check: false)
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return false unless mergeable_state?(skip_ci_check: skip_ci_check)
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check_if_can_be_merged
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can_be_merged?
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end
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def mergeable_state?(skip_ci_check: false)
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return false unless open?
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return false if work_in_progress?
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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?
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true
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end
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def can_cancel_merge_when_build_succeeds?(current_user)
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can_be_merged_by?(current_user) || self.author == current_user
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end
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def can_remove_source_branch?(current_user)
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!source_project.protected_branch?(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
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def force_remove_source_branch?
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Gitlab::Utils.to_boolean(merge_params['force_remove_source_branch'])
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end
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def remove_source_branch?
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should_remove_source_branch? || force_remove_source_branch?
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end
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def mr_and_commit_notes
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# Fetch comments only from last 100 commits
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commits_for_notes_limit = 100
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commit_ids = commits.last(commits_for_notes_limit).map(&:id)
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Note.where(
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"(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,
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target_project_id: target_project_id,
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source_project_id: source_project_id
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)
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end
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def discussions
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@discussions ||= self.mr_and_commit_notes.
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inc_relations_for_view.
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fresh.
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discussions
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end
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def diff_discussions
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@diff_discussions ||= self.notes.diff_notes.discussions
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end
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def find_diff_discussion(discussion_id)
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notes = self.notes.diff_notes.where(discussion_id: discussion_id).fresh.to_a
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return if notes.empty?
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Discussion.new(notes)
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end
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def discussions_resolvable?
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diff_discussions.any?(&:resolvable?)
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end
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def discussions_resolved?
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discussions_resolvable? && diff_discussions.none?(&:to_be_resolved?)
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end
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def mergeable_discussions_state?
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return true unless project.only_allow_merge_if_all_discussions_are_resolved?
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discussions_resolved?
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end
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def hook_attrs
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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?
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}
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if diff_head_commit
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attrs.merge!(last_commit: diff_head_commit.hook_attrs)
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end
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attributes.merge!(attrs)
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end
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def for_fork?
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target_project != source_project
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end
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def project
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target_project
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end
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# If the merge request closes any issues, save this information in the
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# `MergeRequestsClosingIssues` model. This is a performance optimization.
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# Calculating this information for a number of merge requests requires
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# 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 = self.author)
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return if project.has_external_issue_tracker?
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transaction do
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self.merge_requests_closing_issues.delete_all
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closes_issues(current_user).each do |issue|
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self.merge_requests_closing_issues.create!(issue: issue)
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end
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end
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end
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def closes_issue?(issue)
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closes_issues.include?(issue)
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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 = [description]
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messages.concat(commits.map(&:safe_message)) if merge_request_diff
|
|
|
|
Gitlab::ClosingIssueExtractor.new(project, current_user).
|
|
closed_by_message(messages.join("\n"))
|
|
else
|
|
[]
|
|
end
|
|
end
|
|
|
|
def target_project_path
|
|
if target_project
|
|
target_project.path_with_namespace
|
|
else
|
|
"(removed)"
|
|
end
|
|
end
|
|
|
|
def source_project_path
|
|
if source_project
|
|
source_project.path_with_namespace
|
|
else
|
|
"(removed)"
|
|
end
|
|
end
|
|
|
|
def source_project_namespace
|
|
if source_project && source_project.namespace
|
|
source_project.namespace.path
|
|
else
|
|
"(removed)"
|
|
end
|
|
end
|
|
|
|
def target_project_namespace
|
|
if target_project && target_project.namespace
|
|
target_project.namespace.path
|
|
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
|
|
|
|
# Reset merge request events cache
|
|
#
|
|
# Since we do cache @event we need to reset cache in special cases:
|
|
# * when a merge request is updated
|
|
# Events cache stored like events/23-20130109142513.
|
|
# The cache key includes updated_at timestamp.
|
|
# Thus it will automatically generate a new fragment
|
|
# when the event is updated because the key changes.
|
|
def reset_events_cache
|
|
Event.reset_event_cache_for(self)
|
|
end
|
|
|
|
def merge_commit_message
|
|
message = "Merge branch '#{source_branch}' into '#{target_branch}'\n\n"
|
|
message << "#{title}\n\n"
|
|
message << "#{description}\n\n" if description.present?
|
|
message << "See merge request #{to_reference}"
|
|
|
|
message
|
|
end
|
|
|
|
def reset_merge_when_build_succeeds
|
|
return unless merge_when_build_succeeds?
|
|
|
|
self.merge_when_build_succeeds = false
|
|
self.merge_user = nil
|
|
if merge_params
|
|
merge_params.delete('should_remove_source_branch')
|
|
merge_params.delete('commit_message')
|
|
end
|
|
|
|
self.save
|
|
end
|
|
|
|
# Return array of possible target branches
|
|
# depends on target project of MR
|
|
def target_branches
|
|
if target_project.nil?
|
|
[]
|
|
else
|
|
target_project.repository.branch_names
|
|
end
|
|
end
|
|
|
|
# Return array of possible source branches
|
|
# depends on source project of MR
|
|
def source_branches
|
|
if source_project.nil?
|
|
[]
|
|
else
|
|
source_project.repository.branch_names
|
|
end
|
|
end
|
|
|
|
def locked_long_ago?
|
|
return false unless locked?
|
|
|
|
locked_at.nil? || locked_at < (Time.now - 1.day)
|
|
end
|
|
|
|
def has_ci?
|
|
source_project.try(:ci_service) && commits.any?
|
|
end
|
|
|
|
def branch_missing?
|
|
!source_branch_exists? || !target_branch_exists?
|
|
end
|
|
|
|
def broken?
|
|
self.commits.blank? || branch_missing? || cannot_be_merged?
|
|
end
|
|
|
|
def can_be_merged_by?(user)
|
|
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)
|
|
end
|
|
|
|
def mergeable_ci_state?
|
|
return true unless project.only_allow_merge_if_build_succeeds?
|
|
|
|
!pipeline || pipeline.success?
|
|
end
|
|
|
|
def environments
|
|
return [] unless diff_head_commit
|
|
|
|
@environments ||=
|
|
begin
|
|
envs = target_project.environments_for(target_branch, diff_head_commit, with_tags: true)
|
|
envs.concat(source_project.environments_for(source_branch, diff_head_commit)) if source_project
|
|
envs.uniq
|
|
end
|
|
end
|
|
|
|
def state_human_name
|
|
if merged?
|
|
"Merged"
|
|
elsif closed?
|
|
"Closed"
|
|
else
|
|
"Open"
|
|
end
|
|
end
|
|
|
|
def state_icon_name
|
|
if merged?
|
|
"check"
|
|
elsif closed?
|
|
"times"
|
|
else
|
|
"circle-o"
|
|
end
|
|
end
|
|
|
|
def fetch_ref
|
|
target_project.repository.fetch_ref(
|
|
source_project.repository.path_to_repo,
|
|
"refs/heads/#{source_branch}",
|
|
ref_path
|
|
)
|
|
end
|
|
|
|
def ref_path
|
|
"refs/merge-requests/#{iid}/head"
|
|
end
|
|
|
|
def ref_fetched?
|
|
project.repository.ref_exists?(ref_path)
|
|
end
|
|
|
|
def ensure_ref_fetched
|
|
fetch_ref unless ref_fetched?
|
|
end
|
|
|
|
def in_locked_state
|
|
begin
|
|
lock_mr
|
|
yield
|
|
ensure
|
|
unlock_mr if locked?
|
|
end
|
|
end
|
|
|
|
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
|
|
|
|
def compute_diverged_commits_count
|
|
return 0 unless source_branch_sha && target_branch_sha
|
|
|
|
Gitlab::Git::Commit.between(target_project.repository.raw_repository, source_branch_sha, target_branch_sha).size
|
|
end
|
|
private :compute_diverged_commits_count
|
|
|
|
def diverged_from_target_branch?
|
|
diverged_commits_count > 0
|
|
end
|
|
|
|
def commits_sha
|
|
commits.map(&:sha)
|
|
end
|
|
|
|
def pipeline
|
|
return unless diff_head_sha && source_project
|
|
|
|
@pipeline ||= source_project.pipeline_for(source_branch, diff_head_sha)
|
|
end
|
|
|
|
def all_pipelines
|
|
return unless source_project
|
|
|
|
@all_pipelines ||= source_project.pipelines
|
|
.where(sha: all_commits_sha, ref: source_branch)
|
|
.order(id: :desc)
|
|
end
|
|
|
|
# Note that this could also return SHA from now dangling commits
|
|
#
|
|
def all_commits_sha
|
|
if persisted?
|
|
merge_request_diffs.flat_map(&:commits_sha).uniq
|
|
elsif compare_commits
|
|
compare_commits.to_a.reverse.map(&:id)
|
|
else
|
|
[diff_head_sha]
|
|
end
|
|
end
|
|
|
|
def merge_commit
|
|
@merge_commit ||= project.commit(merge_commit_sha) if merge_commit_sha
|
|
end
|
|
|
|
def can_be_reverted?(current_user = nil)
|
|
merge_commit && !merge_commit.has_been_reverted?(current_user, self)
|
|
end
|
|
|
|
def can_be_cherry_picked?
|
|
merge_commit
|
|
end
|
|
|
|
def has_complete_diff_refs?
|
|
diff_sha_refs && diff_sha_refs.complete?
|
|
end
|
|
|
|
def update_diff_notes_positions(old_diff_refs:, new_diff_refs:)
|
|
return unless has_complete_diff_refs?
|
|
return if new_diff_refs == old_diff_refs
|
|
|
|
active_diff_notes = self.notes.diff_notes.select do |note|
|
|
note.new_diff_note? && note.active?(old_diff_refs)
|
|
end
|
|
|
|
return if active_diff_notes.empty?
|
|
|
|
paths = active_diff_notes.flat_map { |n| n.diff_file.paths }.uniq
|
|
|
|
service = Notes::DiffPositionUpdateService.new(
|
|
self.project,
|
|
nil,
|
|
old_diff_refs: old_diff_refs,
|
|
new_diff_refs: new_diff_refs,
|
|
paths: paths
|
|
)
|
|
|
|
active_diff_notes.each do |note|
|
|
service.execute(note)
|
|
Gitlab::Timeless.timeless(note, &:save)
|
|
end
|
|
end
|
|
|
|
def keep_around_commit
|
|
project.repository.keep_around(self.merge_commit_sha)
|
|
end
|
|
|
|
def conflicts
|
|
@conflicts ||= Gitlab::Conflict::FileCollection.new(self)
|
|
end
|
|
|
|
def conflicts_can_be_resolved_by?(user)
|
|
access = ::Gitlab::UserAccess.new(user, project: source_project)
|
|
access.can_push_to_branch?(source_branch)
|
|
end
|
|
|
|
def conflicts_can_be_resolved_in_ui?
|
|
return @conflicts_can_be_resolved_in_ui if defined?(@conflicts_can_be_resolved_in_ui)
|
|
|
|
return @conflicts_can_be_resolved_in_ui = false unless cannot_be_merged?
|
|
return @conflicts_can_be_resolved_in_ui = false unless has_complete_diff_refs?
|
|
|
|
begin
|
|
# Try to parse each conflict. If the MR's mergeable status hasn't been updated,
|
|
# ensure that we don't say there are conflicts to resolve when there are no conflict
|
|
# files.
|
|
conflicts.files.each(&:lines)
|
|
@conflicts_can_be_resolved_in_ui = conflicts.files.length > 0
|
|
rescue Rugged::OdbError, Gitlab::Conflict::Parser::UnresolvableError, Gitlab::Conflict::FileCollection::ConflictSideMissing
|
|
@conflicts_can_be_resolved_in_ui = false
|
|
end
|
|
end
|
|
end
|