474 lines
12 KiB
Ruby
474 lines
12 KiB
Ruby
# == Schema Information
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#
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# Table name: merge_requests
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#
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# id :integer not null, primary key
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# target_branch :string(255) not null
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# source_branch :string(255) not null
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# source_project_id :integer not null
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# author_id :integer
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# assignee_id :integer
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# title :string(255)
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# created_at :datetime
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# updated_at :datetime
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# milestone_id :integer
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# state :string(255)
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# merge_status :string(255)
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# target_project_id :integer not null
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# iid :integer
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# description :text
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# position :integer default(0)
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# locked_at :datetime
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# updated_by_id :integer
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#
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require Rails.root.join("app/models/commit")
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require Rails.root.join("lib/static_model")
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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 Taskable
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belongs_to :target_project, foreign_key: :target_project_id, class_name: "Project"
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belongs_to :source_project, foreign_key: :source_project_id, class_name: "Project"
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has_one :merge_request_diff, dependent: :destroy
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after_create :create_merge_request_diff
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after_update :update_merge_request_diff
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delegate :commits, :diffs, 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_failed,
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:compare_commits, :compare_diffs
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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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merge_request.record_timestamps = false
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begin
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block.call
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ensure
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merge_request.record_timestamps = true
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end
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end
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end
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validates :source_project, presence: true, unless: :allow_broken
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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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validate :validate_branches
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validate :validate_fork
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scope :of_group, ->(group) { where("source_project_id in (:group_project_ids) OR target_project_id in (:group_project_ids)", group_project_ids: group.project_ids) }
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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 :in_projects, ->(project_ids) { where("source_project_id in (:project_ids) OR target_project_id in (:project_ids)", project_ids: project_ids) }
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scope :of_projects, ->(ids) { where(target_project_id: ids) }
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scope :merged, -> { with_state(:merged) }
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scope :closed, -> { with_state(:closed) }
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scope :closed_and_merged, -> { with_states(:closed, :merged) }
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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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%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 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 last_commit
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merge_request_diff ? merge_request_diff.last_commit : compare_commits.last
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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 last_commit_short_sha
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last_commit.short_id
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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.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: #{
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similar_mrs.pluck(:title)
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}"
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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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if target_project == source_project
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true
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else
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# If source and target projects are different
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# we should check if source project is actually a fork of target project
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if source_project.forked_from?(target_project)
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true
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else
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errors.add :validate_fork,
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'Source project is not a fork of target project'
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end
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end
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end
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def update_merge_request_diff
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if source_branch_changed? || target_branch_changed?
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reload_code
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end
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end
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def reload_code
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if merge_request_diff && open?
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merge_request_diff.reload_content
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end
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end
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def check_if_can_be_merged
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can_be_merged =
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project.repository.can_be_merged?(source_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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self.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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self.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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!!(title =~ /\A\[?WIP\]?:? /i)
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end
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def mergeable?
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open? && !work_in_progress? && can_be_merged?
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end
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def gitlab_merge_status
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if work_in_progress?
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"work_in_progress"
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else
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merge_status_name
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end
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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 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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# Returns the raw diff for this merge request
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#
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# see "git diff"
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def to_diff(current_user)
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target_project.repository.diff_text(target_branch, source_sha)
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end
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# Returns the commit as a series of email patches.
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#
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# see "git format-patch"
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def to_patch(current_user)
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target_project.repository.format_patch(target_branch, source_sha)
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end
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def hook_attrs
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attrs = {
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source: source_project.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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unless last_commit.nil?
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attrs.merge!(last_commit: last_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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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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issues = commits.flat_map { |c| c.closes_issues(current_user) }
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issues.push(*Gitlab::ClosingIssueExtractor.new(project, current_user).
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closed_by_message(description))
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issues.uniq.sort_by(&:id)
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else
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[]
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end
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end
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def target_project_path
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if target_project
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target_project.path_with_namespace
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else
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"(removed)"
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end
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end
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def source_project_path
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if source_project
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source_project.path_with_namespace
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else
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"(removed)"
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end
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end
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def source_project_namespace
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if source_project && source_project.namespace
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source_project.namespace.path
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else
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"(removed)"
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end
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end
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def target_project_namespace
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if target_project && target_project.namespace
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target_project.namespace.path
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else
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"(removed)"
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end
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end
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def source_branch_exists?
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return false unless self.source_project
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self.source_project.repository.branch_names.include?(self.source_branch)
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end
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def target_branch_exists?
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return false unless self.target_project
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self.target_project.repository.branch_names.include?(self.target_branch)
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end
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# Reset merge request events cache
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#
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# Since we do cache @event we need to reset cache in special cases:
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# * when a merge request is updated
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# Events cache stored like events/23-20130109142513.
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# The cache key includes updated_at timestamp.
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# Thus it will automatically generate a new fragment
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# when the event is updated because the key changes.
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def reset_events_cache
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Event.reset_event_cache_for(self)
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end
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def merge_commit_message
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message = "Merge branch '#{source_branch}' into '#{target_branch}'"
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message << "\n\n"
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message << title.to_s
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message << "\n\n"
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message << description.to_s
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message << "\n\n"
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message << "See merge request !#{iid}"
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message
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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
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if target_project.nil?
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[]
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else
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target_project.repository.branch_names
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end
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end
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# Return array of possible source branches
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# depends on source project of MR
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def source_branches
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if source_project.nil?
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[]
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else
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source_project.repository.branch_names
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end
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end
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def locked_long_ago?
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return false unless locked?
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locked_at.nil? || locked_at < (Time.now - 1.day)
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end
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def has_ci?
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source_project.ci_service && commits.any?
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end
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def branch_missing?
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!source_branch_exists? || !target_branch_exists?
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end
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def can_be_merged_by?(user)
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::Gitlab::GitAccess.new(user, project).can_push_to_branch?(target_branch)
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end
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def state_human_name
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if merged?
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"Merged"
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elsif closed?
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"Closed"
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else
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"Open"
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end
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end
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def target_sha
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@target_sha ||= target_project.
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repository.commit(target_branch).sha
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end
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def source_sha
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commits.first.sha
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end
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def fetch_ref
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target_project.repository.fetch_ref(
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source_project.repository.path_to_repo,
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"refs/heads/#{source_branch}",
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ref_path
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)
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end
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def ref_path
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"refs/merge-requests/#{iid}/head"
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end
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def ref_is_fetched?
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File.exists?(File.join(project.repository.path_to_repo, ref_path))
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end
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def ensure_ref_fetched
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fetch_ref unless ref_is_fetched?
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end
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def in_locked_state
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begin
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lock_mr
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yield
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ensure
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unlock_mr if locked?
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end
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end
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end
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