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project.rb 57.8 KB
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require 'carrierwave/orm/activerecord'

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class Project < ActiveRecord::Base
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  include Gitlab::ConfigHelper
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  include Gitlab::ShellAdapter
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  include Gitlab::VisibilityLevel
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  include AccessRequestable
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  include Avatarable
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  include CacheMarkdownField
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  include Referable
  include Sortable
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  include AfterCommitQueue
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  include CaseSensitivity
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  include TokenAuthenticatable
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  include ValidAttribute
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  include ProjectFeaturesCompatibility
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  include SelectForProjectAuthorization
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  include Presentable
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  include Routable
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  include GroupDescendant
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  include Gitlab::SQL::Pattern
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  include DeploymentPlatform
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  include ::Gitlab::Utils::StrongMemoize
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  extend Gitlab::ConfigHelper
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  BoardLimitExceeded = Class.new(StandardError)
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  NUMBER_OF_PERMITTED_BOARDS = 1
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  UNKNOWN_IMPORT_URL = 'http://unknown.git'.freeze
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  # Hashed Storage versions handle rolling out new storage to project and dependents models:
  # nil: legacy
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  # 1: repository
  # 2: attachments
  LATEST_STORAGE_VERSION = 2
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  HASHED_STORAGE_FEATURES = {
    repository: 1,
    attachments: 2
  }.freeze
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  # Valids ports to import from
  VALID_IMPORT_PORTS = [22, 80, 443].freeze

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  cache_markdown_field :description, pipeline: :description

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  delegate :feature_available?, :builds_enabled?, :wiki_enabled?,
           :merge_requests_enabled?, :issues_enabled?, to: :project_feature,
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                                                       allow_nil: true
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  delegate :base_dir, :disk_path, :ensure_storage_path_exists, to: :storage
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  default_value_for :archived, false
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  default_value_for :visibility_level, gitlab_config_features.visibility_level
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  default_value_for :resolve_outdated_diff_discussions, false
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  default_value_for :container_registry_enabled, gitlab_config_features.container_registry
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  default_value_for(:repository_storage) { Gitlab::CurrentSettings.pick_repository_storage }
  default_value_for(:shared_runners_enabled) { Gitlab::CurrentSettings.shared_runners_enabled }
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  default_value_for :issues_enabled, gitlab_config_features.issues
  default_value_for :merge_requests_enabled, gitlab_config_features.merge_requests
  default_value_for :builds_enabled, gitlab_config_features.builds
  default_value_for :wiki_enabled, gitlab_config_features.wiki
  default_value_for :snippets_enabled, gitlab_config_features.snippets
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  default_value_for :only_allow_merge_if_all_discussions_are_resolved, false
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  add_authentication_token_field :runners_token
  before_save :ensure_runners_token
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  after_save :update_project_statistics, if: :namespace_id_changed?
  after_create :create_project_feature, unless: :project_feature
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  after_create :set_last_activity_at
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  after_create :set_last_repository_updated_at
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  after_update :update_forks_visibility_level
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  before_destroy :remove_private_deploy_keys
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  after_destroy -> { run_after_commit { remove_pages } }
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  after_destroy :remove_exports
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  after_validation :check_pending_delete

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  # Storage specific hooks
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  after_initialize :use_hashed_storage
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  after_create :check_repository_absence!
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  after_create :ensure_storage_path_exists
  after_save :ensure_storage_path_exists, if: :namespace_id_changed?
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  acts_as_taggable
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  attr_accessor :old_path_with_namespace
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  attr_accessor :template_name
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  attr_writer :pipeline_status
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  attr_accessor :skip_disk_validation
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  alias_attribute :title, :name

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  # Relations
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  belongs_to :creator, class_name: 'User'
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  belongs_to :group, -> { where(type: 'Group') }, foreign_key: 'namespace_id'
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  belongs_to :namespace
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  alias_method :parent, :namespace
  alias_attribute :parent_id, :namespace_id
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  has_one :last_event, -> {order 'events.created_at DESC'}, class_name: 'Event'
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  has_many :boards, before_add: :validate_board_limit
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  # Project services
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  has_one :campfire_service
  has_one :drone_ci_service
  has_one :emails_on_push_service
  has_one :pipelines_email_service
  has_one :irker_service
  has_one :pivotaltracker_service
  has_one :hipchat_service
  has_one :flowdock_service
  has_one :assembla_service
  has_one :asana_service
  has_one :gemnasium_service
  has_one :mattermost_slash_commands_service
  has_one :mattermost_service
  has_one :slack_slash_commands_service
  has_one :slack_service
  has_one :buildkite_service
  has_one :bamboo_service
  has_one :teamcity_service
  has_one :pushover_service
  has_one :jira_service
  has_one :redmine_service
  has_one :custom_issue_tracker_service
  has_one :bugzilla_service
  has_one :gitlab_issue_tracker_service, inverse_of: :project
  has_one :external_wiki_service
  has_one :kubernetes_service, inverse_of: :project
  has_one :prometheus_service, inverse_of: :project
  has_one :mock_ci_service
  has_one :mock_deployment_service
  has_one :mock_monitoring_service
  has_one :microsoft_teams_service
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  has_one :packagist_service
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  # TODO: replace these relations with the fork network versions
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  has_one  :forked_project_link,  foreign_key: "forked_to_project_id"
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  has_one  :forked_from_project,  through:   :forked_project_link

  has_many :forked_project_links, foreign_key: "forked_from_project_id"
  has_many :forks,                through:     :forked_project_links, source: :forked_to_project
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  # TODO: replace these relations with the fork network versions

  has_one :root_of_fork_network,
          foreign_key: 'root_project_id',
          inverse_of: :root_project,
          class_name: 'ForkNetwork'
  has_one :fork_network_member
  has_one :fork_network, through: :fork_network_member
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  # Merge Requests for target project should be removed with it
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  has_many :merge_requests, foreign_key: 'target_project_id'
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  has_many :source_of_merge_requests, foreign_key: 'source_project_id', class_name: 'MergeRequest'
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  has_many :issues
  has_many :labels, class_name: 'ProjectLabel'
  has_many :services
  has_many :events
  has_many :milestones
  has_many :notes
  has_many :snippets, class_name: 'ProjectSnippet'
  has_many :hooks, class_name: 'ProjectHook'
  has_many :protected_branches
  has_many :protected_tags
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  has_many :project_authorizations
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  has_many :authorized_users, through: :project_authorizations, source: :user, class_name: 'User'
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  has_many :project_members, -> { where(requested_at: nil) },
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    as: :source, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
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  alias_method :members, :project_members
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  has_many :users, through: :project_members

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  has_many :requesters, -> { where.not(requested_at: nil) },
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    as: :source, class_name: 'ProjectMember', dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
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  has_many :members_and_requesters, as: :source, class_name: 'ProjectMember'
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  has_many :deploy_keys_projects
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  has_many :deploy_keys, through: :deploy_keys_projects
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  has_many :users_star_projects
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  has_many :starrers, through: :users_star_projects, source: :user
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  has_many :releases
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  has_many :lfs_objects_projects, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
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  has_many :lfs_objects, through: :lfs_objects_projects
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  has_many :lfs_file_locks
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  has_many :project_group_links
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  has_many :invited_groups, through: :project_group_links, source: :group
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  has_many :pages_domains
  has_many :todos
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  has_many :notification_settings, as: :source, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
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  has_many :internal_ids

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  has_one :import_data, class_name: 'ProjectImportData', inverse_of: :project, autosave: true
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  has_one :project_feature, inverse_of: :project
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  has_one :statistics, class_name: 'ProjectStatistics'
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  has_one :cluster_project, class_name: 'Clusters::Project'
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  has_many :clusters, through: :cluster_project, class_name: 'Clusters::Cluster'
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  # Container repositories need to remove data from the container registry,
  # which is not managed by the DB. Hence we're still using dependent: :destroy
  # here.
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  has_many :container_repositories, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
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  has_many :commit_statuses
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  has_many :pipelines, class_name: 'Ci::Pipeline', inverse_of: :project
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  # Ci::Build objects store data on the file system such as artifact files and
  # build traces. Currently there's no efficient way of removing this data in
  # bulk that doesn't involve loading the rows into memory. As a result we're
  # still using `dependent: :destroy` here.
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  has_many :builds, class_name: 'Ci::Build', inverse_of: :project, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
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  has_many :build_trace_section_names, class_name: 'Ci::BuildTraceSectionName'
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  has_many :runner_projects, class_name: 'Ci::RunnerProject'
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  has_many :runners, through: :runner_projects, source: :runner, class_name: 'Ci::Runner'
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  has_many :variables, class_name: 'Ci::Variable'
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  has_many :triggers, class_name: 'Ci::Trigger'
  has_many :environments
  has_many :deployments
  has_many :pipeline_schedules, class_name: 'Ci::PipelineSchedule'
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  has_many :active_runners, -> { active }, through: :runner_projects, source: :runner, class_name: 'Ci::Runner'

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  has_one :auto_devops, class_name: 'ProjectAutoDevops'
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  has_many :custom_attributes, class_name: 'ProjectCustomAttribute'
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  has_many :project_badges, class_name: 'ProjectBadge'

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  accepts_nested_attributes_for :variables, allow_destroy: true
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  accepts_nested_attributes_for :project_feature, update_only: true
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  accepts_nested_attributes_for :import_data
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  accepts_nested_attributes_for :auto_devops, update_only: true
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  delegate :name, to: :owner, allow_nil: true, prefix: true
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  delegate :members, to: :team, prefix: true
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  delegate :add_user, :add_users, to: :team
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  delegate :add_guest, :add_reporter, :add_developer, :add_master, :add_role, to: :team
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  # Validations
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  validates :creator, presence: true, on: :create
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  validates :description, length: { maximum: 2000 }, allow_blank: true
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  validates :ci_config_path,
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    format: { without: %r{(\.{2}|\A/)},
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              message: 'cannot include leading slash or directory traversal.' },
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    length: { maximum: 255 },
    allow_blank: true
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  validates :name,
    presence: true,
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    length: { maximum: 255 },
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    format: { with: Gitlab::Regex.project_name_regex,
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              message: Gitlab::Regex.project_name_regex_message }
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  validates :path,
    presence: true,
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    project_path: true,
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    length: { maximum: 255 }
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  validates :namespace, presence: true
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  validates :name, uniqueness: { scope: :namespace_id }
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  validates :import_url, addressable_url: true, if: :external_import?
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  validates :import_url, importable_url: true, if: [:external_import?, :import_url_changed?]
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  validates :star_count, numericality: { greater_than_or_equal_to: 0 }
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  validate :check_limit, on: :create
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  validate :check_repository_path_availability, on: :update, if: ->(project) { project.renamed? }
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  validate :visibility_level_allowed_by_group
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  validate :visibility_level_allowed_as_fork
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  validate :check_wiki_path_conflict
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  validates :repository_storage,
    presence: true,
    inclusion: { in: ->(_object) { Gitlab.config.repositories.storages.keys } }
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  validates :variables, variable_duplicates: { scope: :environment_scope }
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  has_many :uploads, as: :model, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
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  # Scopes
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  scope :pending_delete, -> { where(pending_delete: true) }
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  scope :without_deleted, -> { where(pending_delete: false) }
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  scope :with_storage_feature, ->(feature) { where('storage_version >= :version', version: HASHED_STORAGE_FEATURES[feature]) }
  scope :without_storage_feature, ->(feature) { where('storage_version < :version OR storage_version IS NULL', version: HASHED_STORAGE_FEATURES[feature]) }
  scope :with_unmigrated_storage, -> { where('storage_version < :version OR storage_version IS NULL', version: LATEST_STORAGE_VERSION) }
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  # last_activity_at is throttled every minute, but last_repository_updated_at is updated with every push
  scope :sorted_by_activity, -> { reorder("GREATEST(COALESCE(last_activity_at, '1970-01-01'), COALESCE(last_repository_updated_at, '1970-01-01')) DESC") }
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  scope :sorted_by_stars, -> { reorder('projects.star_count DESC') }

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  scope :in_namespace, ->(namespace_ids) { where(namespace_id: namespace_ids) }
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  scope :personal, ->(user) { where(namespace_id: user.namespace_id) }
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  scope :joined, ->(user) { where('namespace_id != ?', user.namespace_id) }
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  scope :starred_by, ->(user) { joins(:users_star_projects).where('users_star_projects.user_id': user.id) }
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  scope :visible_to_user, ->(user) { where(id: user.authorized_projects.select(:id).reorder(nil)) }
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  scope :archived, -> { where(archived: true) }
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  scope :non_archived, -> { where(archived: false) }
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  scope :for_milestones, ->(ids) { joins(:milestones).where('milestones.id' => ids).distinct }
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  scope :with_push, -> { joins(:events).where('events.action = ?', Event::PUSHED) }
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  scope :with_project_feature, -> { joins('LEFT JOIN project_features ON projects.id = project_features.project_id') }
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  scope :with_statistics, -> { includes(:statistics) }
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  scope :with_shared_runners, -> { where(shared_runners_enabled: true) }
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  scope :inside_path, ->(path) do
    # We need routes alias rs for JOIN so it does not conflict with
    # includes(:route) which we use in ProjectsFinder.
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    joins("INNER JOIN routes rs ON rs.source_id = projects.id AND rs.source_type = 'Project'")
      .where('rs.path LIKE ?', "#{sanitize_sql_like(path)}/%")
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  end
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  # "enabled" here means "not disabled". It includes private features!
  scope :with_feature_enabled, ->(feature) {
    access_level_attribute = ProjectFeature.access_level_attribute(feature)
    with_project_feature.where(project_features: { access_level_attribute => [nil, ProjectFeature::PRIVATE, ProjectFeature::ENABLED] })
  }

  # Picks a feature where the level is exactly that given.
  scope :with_feature_access_level, ->(feature, level) {
    access_level_attribute = ProjectFeature.access_level_attribute(feature)
    with_project_feature.where(project_features: { access_level_attribute => level })
  }

  scope :with_builds_enabled, -> { with_feature_enabled(:builds) }
  scope :with_issues_enabled, -> { with_feature_enabled(:issues) }
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  scope :with_issues_available_for_user, ->(current_user) { with_feature_available_for_user(:issues, current_user) }
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  scope :with_merge_requests_enabled, -> { with_feature_enabled(:merge_requests) }
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  enum auto_cancel_pending_pipelines: { disabled: 0, enabled: 1 }
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  # Returns a collection of projects that is either public or visible to the
  # logged in user.
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  def self.public_or_visible_to_user(user = nil)
    if user
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      where('EXISTS (?) OR projects.visibility_level IN (?)',
            user.authorizations_for_projects,
            Gitlab::VisibilityLevel.levels_for_user(user))
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    else
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      public_to_user
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    end
  end

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  # project features may be "disabled", "internal" or "enabled". If "internal",
  # they are only available to team members. This scope returns projects where
  # the feature is either enabled, or internal with permission for the user.
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  #
  # This method uses an optimised version of `with_feature_access_level` for
  # logged in users to more efficiently get private projects with the given
  # feature.
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  def self.with_feature_available_for_user(feature, user)
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    visible = [nil, ProjectFeature::ENABLED]

    if user&.admin?
      with_feature_enabled(feature)
    elsif user
      column = ProjectFeature.quoted_access_level_column(feature)

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      with_project_feature
        .where("#{column} IN (?) OR (#{column} = ? AND EXISTS (?))",
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              visible,
              ProjectFeature::PRIVATE,
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              user.authorizations_for_projects)
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    else
      with_feature_access_level(feature, visible)
    end
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  end
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  scope :active, -> { joins(:issues, :notes, :merge_requests).order('issues.created_at, notes.created_at, merge_requests.created_at DESC') }
  scope :abandoned, -> { where('projects.last_activity_at < ?', 6.months.ago) }
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  scope :excluding_project, ->(project) { where.not(id: project) }
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  scope :import_started, -> { where(import_status: 'started') }
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  state_machine :import_status, initial: :none do
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    event :import_schedule do
      transition [:none, :finished, :failed] => :scheduled
    end

    event :force_import_start do
      transition [:none, :finished, :failed] => :started
    end

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    event :import_start do
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      transition scheduled: :started
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    end

    event :import_finish do
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      transition started: :finished
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    end

    event :import_fail do
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      transition [:scheduled, :started] => :failed
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    end

    event :import_retry do
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      transition failed: :started
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    end

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    state :scheduled
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    state :started
    state :finished
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    state :failed

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    after_transition [:none, :finished, :failed] => :scheduled do |project, _|
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      project.run_after_commit do
        job_id = add_import_job
        update(import_jid: job_id) if job_id
      end
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    end

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    after_transition started: :finished do |project, _|
      project.reset_cache_and_import_attrs
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      if Gitlab::ImportSources.importer_names.include?(project.import_type) && project.repo_exists?
        project.run_after_commit do
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          Projects::AfterImportService.new(project).execute
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        end
      end
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    end
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  end

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  class << self
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    # Searches for a list of projects based on the query given in `query`.
    #
    # On PostgreSQL this method uses "ILIKE" to perform a case-insensitive
    # search. On MySQL a regular "LIKE" is used as it's already
    # case-insensitive.
    #
    # query - The search query as a String.
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    def search(query)
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      fuzzy_search(query, [:path, :name, :description])
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    end
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    def search_by_title(query)
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      non_archived.fuzzy_search(query, [:name])
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    end

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    def visibility_levels
      Gitlab::VisibilityLevel.options
    end
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    def sort(method)
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      case method.to_s
      when 'storage_size_desc'
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        # storage_size is a joined column so we need to
        # pass a string to avoid AR adding the table name
        reorder('project_statistics.storage_size DESC, projects.id DESC')
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      when 'latest_activity_desc'
        reorder(last_activity_at: :desc)
      when 'latest_activity_asc'
        reorder(last_activity_at: :asc)
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      else
        order_by(method)
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      end
    end
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    def reference_pattern
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      %r{
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        ((?<namespace>#{Gitlab::PathRegex::FULL_NAMESPACE_FORMAT_REGEX})\/)?
        (?<project>#{Gitlab::PathRegex::PROJECT_PATH_FORMAT_REGEX})
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      }x
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    end
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    def trending
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      joins('INNER JOIN trending_projects ON projects.id = trending_projects.project_id')
        .reorder('trending_projects.id ASC')
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    end
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    def cached_count
      Rails.cache.fetch('total_project_count', expires_in: 5.minutes) do
        Project.count
      end
    end
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    def group_ids
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      joins(:namespace).where(namespaces: { type: 'Group' }).select(:namespace_id)
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    end
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  end

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  # returns all ancestor-groups upto but excluding the given namespace
  # when no namespace is given, all ancestors upto the top are returned
  def ancestors_upto(top = nil)
    Gitlab::GroupHierarchy.new(Group.where(id: namespace_id))
      .base_and_ancestors(upto: top)
  end

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  def lfs_enabled?
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    return namespace.lfs_enabled? if self[:lfs_enabled].nil?
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    self[:lfs_enabled] && Gitlab.config.lfs.enabled
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  end

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  def auto_devops_enabled?
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    if auto_devops&.enabled.nil?
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      Gitlab::CurrentSettings.auto_devops_enabled?
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    else
      auto_devops.enabled?
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    end
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  end

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  def has_auto_devops_implicitly_disabled?
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    auto_devops&.enabled.nil? && !Gitlab::CurrentSettings.auto_devops_enabled?
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  end

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  def empty_repo?
    repository.empty?
  end

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  def repository_storage_path
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    Gitlab.config.repositories.storages[repository_storage].try(:[], 'path')
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  end

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  def team
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    @team ||= ProjectTeam.new(self)
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  end

  def repository
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    @repository ||= Repository.new(full_path, self, disk_path: disk_path)
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  end

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  def cleanup
    @repository&.cleanup
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    @repository = nil
  end

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  alias_method :reload_repository!, :cleanup

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  def container_registry_url
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    if Gitlab.config.registry.enabled
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      "#{Gitlab.config.registry.host_port}/#{full_path.downcase}"
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    end
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  end

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  def has_container_registry_tags?
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    return @images if defined?(@images)

    @images = container_repositories.to_a.any?(&:has_tags?) ||
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      has_root_container_repository_tags?
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  end

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  def commit(ref = 'HEAD')
    repository.commit(ref)
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  end

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  def commit_by(oid:)
    repository.commit_by(oid: oid)
  end

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  # ref can't be HEAD, can only be branch/tag name or SHA
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  def latest_successful_builds_for(ref = default_branch)
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    latest_pipeline = pipelines.latest_successful_for(ref)
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    if latest_pipeline
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      latest_pipeline.builds.latest.with_artifacts_archive
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    else
      builds.none
    end
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  end

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  def merge_base_commit(first_commit_id, second_commit_id)
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    sha = repository.merge_base(first_commit_id, second_commit_id)
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    commit_by(oid: sha) if sha
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  end

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  def saved?
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    id && persisted?
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  end

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  def add_import_job
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    job_id =
      if forked?
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        RepositoryForkWorker.perform_async(id,
                                           forked_from_project.repository_storage_path,
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                                           forked_from_project.disk_path)
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      elsif gitlab_project_import?
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        # Do not retry on Import/Export until https://gitlab.com/gitlab-org/gitlab-ce/issues/26189 is solved.
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        RepositoryImportWorker.set(retry: false).perform_async(self.id)
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      else
        RepositoryImportWorker.perform_async(self.id)
      end
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    log_import_activity(job_id)

    job_id
  end

  def log_import_activity(job_id, type: :import)
    job_type = type.to_s.capitalize

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    if job_id
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      Rails.logger.info("#{job_type} job scheduled for #{full_path} with job ID #{job_id}.")
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    else
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      Rails.logger.error("#{job_type} job failed to create for #{full_path}.")
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    end
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  end

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  def reset_cache_and_import_attrs
    run_after_commit do
      ProjectCacheWorker.perform_async(self.id)
    end

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    update(import_error: nil)
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    remove_import_data
  end

  # This method is overriden in EE::Project model
  def remove_import_data
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    import_data&.destroy
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  end

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  def ci_config_path=(value)
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    # Strip all leading slashes so that //foo -> foo
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    super(value&.delete("\0"))
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  end

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  def import_url=(value)
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    return super(value) unless Gitlab::UrlSanitizer.valid?(value)

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    import_url = Gitlab::UrlSanitizer.new(value)
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    super(import_url.sanitized_url)
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    create_or_update_import_data(credentials: import_url.credentials)
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  end

  def import_url
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    if import_data && super.present?
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      import_url = Gitlab::UrlSanitizer.new(super, credentials: import_data.credentials)
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      import_url.full_url
    else
      super
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    end
  end
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  def valid_import_url?
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    valid?(:import_url) || errors.messages[:import_url].nil?
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  end

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  def create_or_update_import_data(data: nil, credentials: nil)
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    return unless import_url.present? && valid_import_url?
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    project_import_data = import_data || build_import_data
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    if data
      project_import_data.data ||= {}
      project_import_data.data = project_import_data.data.merge(data)
    end
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    if credentials
      project_import_data.credentials ||= {}
      project_import_data.credentials = project_import_data.credentials.merge(credentials)
    end
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  end
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  def import?
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    external_import? || forked? || gitlab_project_import? || bare_repository_import?
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  end

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  def no_import?
    import_status == 'none'
  end

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  def external_import?
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    import_url.present?
  end

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  def imported?
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    import_finished?
  end

  def import_in_progress?
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    import_started? || import_scheduled?
  end

  def import_started?
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    # import? does SQL work so only run it if it looks like there's an import running
    import_status == 'started' && import?
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  end

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  def import_scheduled?
    import_status == 'scheduled'
  end

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  def import_failed?
    import_status == 'failed'
  end

  def import_finished?
    import_status == 'finished'
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  end

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  def safe_import_url
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    Gitlab::UrlSanitizer.new(import_url).masked_url
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  end

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  def bare_repository_import?
    import_type == 'bare_repository'
  end

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  def gitlab_project_import?
    import_type == 'gitlab_project'
  end

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  def gitea_import?
    import_type == 'gitea'
  end

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  def check_limit
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    unless creator.can_create_project? || namespace.kind == 'group'
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      projects_limit = creator.projects_limit

      if projects_limit == 0
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        self.errors.add(:limit_reached, "Personal project creation is not allowed. Please contact your administrator with questions")
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      else
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        self.errors.add(:limit_reached, "Your project limit is #{projects_limit} projects! Please contact your administrator to increase it")
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      end
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    end
  rescue
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    self.errors.add(:base, "Can't check your ability to create project")
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  end

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  def visibility_level_allowed_by_group
    return if visibility_level_allowed_by_group?

    level_name = Gitlab::VisibilityLevel.level_name(self.visibility_level).downcase
    group_level_name = Gitlab::VisibilityLevel.level_name(self.group.visibility_level).downcase
    self.errors.add(:visibility_level, "#{level_name} is not allowed in a #{group_level_name} group.")
  end

  def visibility_level_allowed_as_fork
    return if visibility_level_allowed_as_fork?

    level_name = Gitlab::VisibilityLevel.level_name(self.visibility_level).downcase
    self.errors.add(:visibility_level, "#{level_name} is not allowed since the fork source project has lower visibility.")
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  end

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  def check_wiki_path_conflict
    return if path.blank?

    path_to_check = path.ends_with?('.wiki') ? path.chomp('.wiki') : "#{path}.wiki"

    if Project.where(namespace_id: namespace_id, path: path_to_check).exists?
      errors.add(:name, 'has already been taken')
    end
  end

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  def to_param
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    if persisted? && errors.include?(:path)
      path_was
    else
      path
    end
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  end

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  # `from` argument can be a Namespace or Project.
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  def to_reference(from = nil, full: false)
    if full || cross_namespace_reference?(from)
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      full_path
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    elsif cross_project_reference?(from)
      path
    end
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  end

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  def to_human_reference(from = nil)
    if cross_namespace_reference?(from)
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      name_with_namespace
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    elsif cross_project_reference?(from)
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      name
    end
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  end

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  def web_url
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    Gitlab::Routing.url_helpers.project_url(self)
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  end

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  def new_issuable_address(author, address_type)
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    return unless Gitlab::IncomingEmail.supports_issue_creation? && author
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    author.ensure_incoming_email_token!

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    suffix = address_type == 'merge_request' ? '+merge-request' : ''
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    Gitlab::IncomingEmail.reply_address(
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      "#{full_path}#{suffix}+#{author.incoming_email_token}")
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  end

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  def build_commit_note(commit)
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    notes.new(commit_id: commit.id, noteable_type: 'Commit')
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  end
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  def last_activity
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    last_event
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  end

  def last_activity_date
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    [last_activity_at, last_repository_updated_at, updated_at].compact.max
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  end
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  def project_id
    self.id
  end
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  def get_issue(issue_id, current_user)
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    issue = IssuesFinder.new(current_user, project_id: id).find_by(iid: issue_id) if issues_enabled?

    if issue
      issue
    elsif external_issue_tracker
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      ExternalIssue.new(issue_id, self)
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    end
  end

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  def issue_exists?(issue_id)
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    get_issue(issue_id)
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  end

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  def default_issue_tracker
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    gitlab_issue_tracker_service || create_gitlab_issue_tracker_service
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  end

  def issues_tracker
    if external_issue_tracker
      external_issue_tracker
    else
      default_issue_tracker
    end
  end

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  def external_issue_reference_pattern
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    external_issue_tracker.class.reference_pattern(only_long: issues_enabled?)
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  end

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  def default_issues_tracker?
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    !external_issue_tracker
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  end

  def external_issue_tracker
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    if has_external_issue_tracker.nil? # To populate existing projects
      cache_has_external_issue_tracker
    end

    if has_external_issue_tracker?
      return @external_issue_tracker if defined?(@external_issue_tracker)

      @external_issue_tracker = services.external_issue_trackers.first
    else
      nil
    end
  end

  def cache_has_external_issue_tracker
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    update_column(:has_external_issue_tracker, services.external_issue_trackers.any?) if Gitlab::Database.read_write?
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  end

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  def has_wiki?
    wiki_enabled? || has_external_wiki?
  end

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  def external_wiki
    if has_external_wiki.nil?
      cache_has_external_wiki # Populate
    end

    if has_external_wiki
      @external_wiki ||= services.external_wikis.first
    else
      nil
    end
  end

  def cache_has_external_wiki
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    update_column(:has_external_wiki, services.external_wikis.any?) if Gitlab::Database.read_write?
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  end

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  def find_or_initialize_services(exceptions: [])