project.rb 31.1 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 Gitlab::CurrentSettings
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  include AccessRequestable
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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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  extend Gitlab::ConfigHelper
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  UNKNOWN_IMPORT_URL = 'http://unknown.git'

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  default_value_for :archived, false
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  default_value_for :visibility_level, gitlab_config_features.visibility_level
  default_value_for :issues_enabled, gitlab_config_features.issues
  default_value_for :merge_requests_enabled, gitlab_config_features.merge_requests
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  default_value_for :builds_enabled, gitlab_config_features.builds
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  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 :container_registry_enabled, gitlab_config_features.container_registry
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  default_value_for(:shared_runners_enabled) { current_application_settings.shared_runners_enabled }
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  # set last_activity_at to the same as created_at
  after_create :set_last_activity_at
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  def set_last_activity_at
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    update_column(:last_activity_at, self.created_at)
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  end

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  # update visibility_level of forks
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  after_update :update_forks_visibility_level
  def update_forks_visibility_level
    return unless visibility_level < visibility_level_was

    forks.each do |forked_project|
      if forked_project.visibility_level > visibility_level
        forked_project.visibility_level = visibility_level
        forked_project.save!
      end
    end
  end

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  ActsAsTaggableOn.strict_case_match = true
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  acts_as_taggable_on :tags
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  attr_accessor :new_default_branch
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  attr_accessor :old_path_with_namespace
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  alias_attribute :title, :name

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  # Relations
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  belongs_to :creator, foreign_key: 'creator_id', 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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  has_one :last_event, -> {order 'events.created_at DESC'}, class_name: 'Event', foreign_key: 'project_id'
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  # Project services
  has_many :services
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  has_one :campfire_service, dependent: :destroy
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  has_one :drone_ci_service, dependent: :destroy
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  has_one :emails_on_push_service, dependent: :destroy
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  has_one :builds_email_service, dependent: :destroy
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  has_one :irker_service, dependent: :destroy
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  has_one :pivotaltracker_service, dependent: :destroy
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  has_one :hipchat_service, dependent: :destroy
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  has_one :flowdock_service, dependent: :destroy
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  has_one :assembla_service, dependent: :destroy
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  has_one :asana_service, dependent: :destroy
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  has_one :gemnasium_service, dependent: :destroy
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  has_one :slack_service, dependent: :destroy
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  has_one :buildkite_service, dependent: :destroy
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  has_one :bamboo_service, dependent: :destroy
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  has_one :teamcity_service, dependent: :destroy
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  has_one :pushover_service, dependent: :destroy
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  has_one :jira_service, dependent: :destroy
  has_one :redmine_service, dependent: :destroy
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  has_one :custom_issue_tracker_service, dependent: :destroy
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  has_one :gitlab_issue_tracker_service, dependent: :destroy
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  has_one :external_wiki_service, dependent: :destroy
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  has_one  :forked_project_link,  dependent: :destroy, foreign_key: "forked_to_project_id"
  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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  # Merge Requests for target project should be removed with it
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  has_many :merge_requests,     dependent: :destroy, foreign_key: 'target_project_id'
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  # Merge requests from source project should be kept when source project was removed
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  has_many :fork_merge_requests, foreign_key: 'source_project_id', class_name: MergeRequest
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  has_many :issues,             dependent: :destroy
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  has_many :labels,             dependent: :destroy
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  has_many :services,           dependent: :destroy
  has_many :events,             dependent: :destroy
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  has_many :milestones,         dependent: :destroy
  has_many :notes,              dependent: :destroy
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  has_many :snippets,           dependent: :destroy, class_name: 'ProjectSnippet'
  has_many :hooks,              dependent: :destroy, class_name: 'ProjectHook'
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  has_many :protected_branches, dependent: :destroy
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  has_many :project_members,    dependent: :destroy, as: :source, class_name: 'ProjectMember'
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  alias_method :members, :project_members
  has_many :users, -> { where(members: { requested_at: nil }) }, through: :project_members
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  has_many :deploy_keys_projects, dependent: :destroy
  has_many :deploy_keys, through: :deploy_keys_projects
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  has_many :users_star_projects, dependent: :destroy
  has_many :starrers, through: :users_star_projects, source: :user
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  has_many :releases, dependent: :destroy
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  has_many :lfs_objects_projects, dependent: :destroy
  has_many :lfs_objects, through: :lfs_objects_projects
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  has_many :project_group_links, dependent: :destroy
  has_many :invited_groups, through: :project_group_links, source: :group
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  has_many :todos, dependent: :destroy
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  has_many :notification_settings, dependent: :destroy, as: :source
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  has_one :import_data, dependent: :destroy, class_name: "ProjectImportData"
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  has_many :commit_statuses, dependent: :destroy, class_name: 'CommitStatus', foreign_key: :gl_project_id
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  has_many :pipelines, dependent: :destroy, class_name: 'Ci::Pipeline', foreign_key: :gl_project_id
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  has_many :builds, class_name: 'Ci::Build', foreign_key: :gl_project_id # the builds are created from the commit_statuses
  has_many :runner_projects, dependent: :destroy, class_name: 'Ci::RunnerProject', foreign_key: :gl_project_id
  has_many :runners, through: :runner_projects, source: :runner, class_name: 'Ci::Runner'
  has_many :variables, dependent: :destroy, class_name: 'Ci::Variable', foreign_key: :gl_project_id
  has_many :triggers, dependent: :destroy, class_name: 'Ci::Trigger', foreign_key: :gl_project_id
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  has_many :environments, dependent: :destroy
  has_many :deployments, dependent: :destroy
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  accepts_nested_attributes_for :variables, allow_destroy: 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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  # 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 :name,
    presence: true,
    length: { within: 0..255 },
    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,
    length: { within: 0..255 },
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    format: { with: Gitlab::Regex.project_path_regex,
              message: Gitlab::Regex.project_path_regex_message }
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  validates :issues_enabled, :merge_requests_enabled,
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            :wiki_enabled, inclusion: { in: [true, false] }
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  validates :namespace, presence: true
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  validates_uniqueness_of :name, scope: :namespace_id
  validates_uniqueness_of :path, scope: :namespace_id
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  validates :import_url,
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    url: { protocols: %w(ssh git http https) },
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    if: :external_import?
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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 :avatar_type,
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    if: ->(project) { project.avatar.present? && project.avatar_changed? }
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  validates :avatar, file_size: { maximum: 200.kilobytes.to_i }
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  validate :visibility_level_allowed_by_group
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  validate :visibility_level_allowed_as_fork
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  add_authentication_token_field :runners_token
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  before_save :ensure_runners_token
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  mount_uploader :avatar, AvatarUploader
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  # Scopes
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  default_scope { where(pending_delete: false) }

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  scope :sorted_by_activity, -> { reorder(last_activity_at: :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 :visible_to_user, ->(user) { where(id: user.authorized_projects.select(:id).reorder(nil)) }
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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) }

  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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  state_machine :import_status, initial: :none do
    event :import_start do
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      transition [:none, :finished] => :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 started: :failed
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    end

    event :import_retry do
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      transition failed: :started
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    end

    state :started
    state :finished
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    state :failed

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    after_transition any => :finished, do: :reset_cache_and_import_attrs
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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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      ptable  = arel_table
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      ntable  = Namespace.arel_table
      pattern = "%#{query}%"

      projects = select(:id).where(
        ptable[:path].matches(pattern).
          or(ptable[:name].matches(pattern)).
          or(ptable[:description].matches(pattern))
      )

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      # We explicitly remove any eager loading clauses as they're:
      #
      # 1. Not needed by this query
      # 2. Combined with .joins(:namespace) lead to all columns from the
      #    projects & namespaces tables being selected, leading to a SQL error
      #    due to the columns of all UNION'd queries no longer being the same.
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      namespaces = select(:id).
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        except(:includes).
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        joins(:namespace).
        where(ntable[:name].matches(pattern))

      union = Gitlab::SQL::Union.new([projects, namespaces])

      where("projects.id IN (#{union.to_sql})")
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    end
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    def search_by_visibility(level)
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      where(visibility_level: Gitlab::VisibilityLevel.const_get(level.upcase))
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    end

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    def search_by_title(query)
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      pattern = "%#{query}%"
      table   = Project.arel_table

      non_archived.where(table[:name].matches(pattern))
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    end

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    # Finds a single project for the given path.
    #
    # path - The full project path (including namespace path).
    #
    # Returns a Project, or nil if no project could be found.
    def find_with_namespace(path)
      where_paths_in([path]).reorder(nil).take
    end
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    # Builds a relation to find multiple projects by their full paths.
    #
    # Each path must be in the following format:
    #
    #     namespace_path/project_path
    #
    # For example:
    #
    #     gitlab-org/gitlab-ce
    #
    # Usage:
    #
    #     Project.where_paths_in(%w{gitlab-org/gitlab-ce gitlab-org/gitlab-ee})
    #
    # This would return the projects with the full paths matching the values
    # given.
    #
    # paths - An Array of full paths (namespace path + project path) for which
    #         to find the projects.
    #
    # Returns an ActiveRecord::Relation.
    def where_paths_in(paths)
      wheres = []
      cast_lower = Gitlab::Database.postgresql?
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      paths.each do |path|
        namespace_path, project_path = path.split('/', 2)
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        next unless namespace_path && project_path

        namespace_path = connection.quote(namespace_path)
        project_path = connection.quote(project_path)
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        where = "(namespaces.path = #{namespace_path}
          AND projects.path = #{project_path})"
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        if cast_lower
          where = "(
            #{where}
            OR (
              LOWER(namespaces.path) = LOWER(#{namespace_path})
              AND LOWER(projects.path) = LOWER(#{project_path})
            )
          )"
        end

        wheres << where
      end

      if wheres.empty?
        none
      else
        joins(:namespace).where(wheres.join(' OR '))
      end
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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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      if method == 'repository_size_desc'
        reorder(repository_size: :desc, id: :desc)
      else
        order_by(method)
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      end
    end
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    def reference_pattern
      name_pattern = Gitlab::Regex::NAMESPACE_REGEX_STR
      %r{(?<project>#{name_pattern}/#{name_pattern})}
    end
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    def trending(since = 1.month.ago)
      # By counting in the JOIN we don't expose the GROUP BY to the outer query.
      # This means that calls such as "any?" and "count" just return a number of
      # the total count, instead of the counts grouped per project as a Hash.
      join_body = "INNER JOIN (
        SELECT project_id, COUNT(*) AS amount
        FROM notes
        WHERE created_at >= #{sanitize(since)}
        GROUP BY project_id
      ) join_note_counts ON projects.id = join_note_counts.project_id"

      joins(join_body).reorder('join_note_counts.amount DESC')
    end
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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(path_with_namespace, self)
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  end

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  def container_registry_path_with_namespace
    path_with_namespace.downcase
  end

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  def container_registry_repository
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    return unless Gitlab.config.registry.enabled

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    @container_registry_repository ||= begin
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      token = Auth::ContainerRegistryAuthenticationService.full_access_token(container_registry_path_with_namespace)
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      url = Gitlab.config.registry.api_url
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      host_port = Gitlab.config.registry.host_port
      registry = ContainerRegistry::Registry.new(url, token: token, path: host_port)
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      registry.repository(container_registry_path_with_namespace)
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    end
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  end

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  def container_registry_repository_url
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    if Gitlab.config.registry.enabled
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      "#{Gitlab.config.registry.host_port}/#{container_registry_path_with_namespace}"
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    end
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  end

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  def has_container_registry_tags?
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    return unless container_registry_repository

    container_registry_repository.tags.any?
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  end

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  def commit(id = 'HEAD')
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    repository.commit(id)
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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)
    repository.commit(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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    if forked?
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      job_id = RepositoryForkWorker.perform_async(self.id, forked_from_project.path_with_namespace, self.namespace.path)
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    else
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      job_id = RepositoryImportWorker.perform_async(self.id)
    end

    if job_id
      Rails.logger.info "Import job started for #{path_with_namespace} with job ID #{job_id}"
    else
      Rails.logger.error "Import job failed to start for #{path_with_namespace}"
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    end
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  end

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  def reset_cache_and_import_attrs
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    update(import_error: nil)

    ProjectCacheWorker.perform_async(self.id)

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    self.import_data.destroy if self.import_data
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  end

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

  def import_url
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    if import_data && super
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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 create_or_update_import_data(data: nil, credentials: nil)
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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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    project_import_data.save
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  end
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  def import?
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    external_import? || forked?
  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?
    import? && import_status == 'started'
  end

  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 check_limit
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    unless creator.can_create_project? or 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 to_param
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    path
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  end

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  def to_reference(_from_project = nil)
    path_with_namespace
  end

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  def web_url
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    Gitlab::Routing.url_helpers.namespace_project_url(self.namespace, self)
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  end

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  def web_url_without_protocol
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    web_url.split('://')[1]
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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 || updated_at
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  end
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  def project_id
    self.id
  end
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  def get_issue(issue_id)
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    if default_issues_tracker?
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      issues.find_by(iid: issue_id)
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    else
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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 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
    update_column(:has_external_issue_tracker, services.external_issue_trackers.any?)
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  end

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  def build_missing_services
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    services_templates = Service.where(template: true)

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    Service.available_services_names.each do |service_name|
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      service = find_service(services, service_name)
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      # If service is available but missing in db
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      if service.nil?
        # We should check if template for the service exists
        template = find_service(services_templates, service_name)

        if template.nil?
          # If no template, we should create an instance. Ex `create_gitlab_ci_service`
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          self.send :"create_#{service_name}_service"
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        else
          Service.create_from_template(self.id, template)
        end
      end
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    end
  end

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  def create_labels
    Label.templates.each do |label|
      label = label.dup
      label.template = nil
      label.project_id = self.id
      label.save
    end
  end

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  def find_service(list, name)
    list.find { |service| service.to_param == name }
  end
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  def ci_services
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    services.where(category: :ci)
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  end

  def ci_service
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    @ci_service ||= ci_services.reorder(nil).find_by(active: true)
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  end

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  def jira_tracker?
    issues_tracker.to_param == 'jira'
  end

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  def avatar_type
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    unless self.avatar.image?
      self.errors.add :avatar, 'only images allowed'
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    end
  end

  def avatar_in_git
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    repository.avatar
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  end

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  def avatar_url
    if avatar.present?
      [gitlab_config.url, avatar.url].join
    elsif avatar_in_git
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      Gitlab::Routing.url_helpers.namespace_project_avatar_url(namespace, self)
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    end
  end

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  # For compatibility with old code
  def code
    path
  end

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  def items_for(entity)
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    case entity
    when 'issue' then
      issues
    when 'merge_request' then
      merge_requests
    end
  end
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  def send_move_instructions(old_path_with_namespace)
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    # New project path needs to be committed to the DB or notification will
    # retrieve stale information
    run_after_commit { NotificationService.new.project_was_moved(self, old_path_with_namespace) }
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  end
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  def owner
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    if group
      group
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    else
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      namespace.try(:owner)
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    end
  end
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  def name_with_namespace
    @name_with_namespace ||= begin
                               if namespace
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                                 namespace.human_name + ' / ' + name
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                               else
                                 name
                               end
                             end
  end
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  alias_method :human_name, :name_with_namespace
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  def path_with_namespace
    if namespace
      namespace.path + '/' + path
    else
      path
    end
  end

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  def execute_hooks(data, hooks_scope = :push_hooks)
    hooks.send(hooks_scope).each do |hook|
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      hook.async_execute(data, hooks_scope.to_s)
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    end
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  end

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  def execute_services(data, hooks_scope = :push_hooks)
    # Call only service hooks that are active for this scope
    services.send(hooks_scope).each do |service|
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      service.async_execute(data)
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    end
  end

  def update_merge_requests(oldrev, newrev, ref, user)
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    MergeRequests::RefreshService.new(self, user).
      execute(oldrev, newrev, ref)
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  end

  def valid_repo?
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    repository.exists?
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  rescue
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    errors.add(:path, 'Invalid repository path')
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    false
  end

  def empty_repo?
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    !repository.exists? || !repository.has_visible_content?
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  end

  def repo
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    repository.raw
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  end

  def url_to_repo
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    gitlab_shell.url_to_repo(path_with_namespace)
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  end

  def namespace_dir
    namespace.try(:path) || ''
  end

  def repo_exists?
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    @repo_exists ||= repository.exists?
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  rescue
    @repo_exists = false
  end

  def open_branches
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    # We're using a Set here as checking values in a large Set is faster than
    # checking values in a large Array.
    protected_set = Set.new(protected_branch_names)
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    repository.branches.reject do |branch|
      protected_set.include?(branch.name)
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    end
  end

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  def protected_branch_names
    @protected_branch_names ||= protected_branches.pluck(:name)
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  end

  def root_ref?(branch)
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    repository.root_ref == branch
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  end

  def ssh_url_to_repo
    url_to_repo
  end

  def http_url_to_repo
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    "#{web_url}.git"
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  end

  # Check if current branch name is marked as protected in the system
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  def protected_branch?(branch_name)
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    protected_branch_names.include?(branch_name)
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  end
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  def developers_can_push_to_protected_branch?(branch_name)
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    protected_branches.any? { |pb| pb.name == branch_name && pb.developers_can_push }
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  end

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  def forked?
    !(forked_project_link.nil? || forked_project_link.forked_from_project.nil?)
  end
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  def personal?
    !group
  end

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  def rename_repo
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    path_was = previous_changes['path'].first
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    old_path_with_namespace = File.join(namespace_dir, path_was)
    new_path_with_namespace = File.join(namespace_dir, path)

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    expire_caches_before_rename(old_path_with_namespace)

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    if has_container_registry_tags?
      # we currently doesn't support renaming repository if it contains tags in container registry
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      raise Exception.new('Project cannot be renamed, because tags are present in its container registry')
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    end

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    if gitlab_shell.mv_repository(old_path_with_namespace, new_path_with_namespace)
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      # If repository moved successfully we need to send update instructions to users.
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      # However we cannot allow rollback since we moved repository
      # So we basically we mute exceptions in next actions
      begin
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        gitlab_shell.mv_repository("#{old_path_with_namespace}.wiki", "#{new_path_with_namespace}.wiki")
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        send_move_instructions(old_path_with_namespace)
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        reset_events_cache
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        @old_path_with_namespace = old_path_with_namespace

        SystemHooksService.new.execute_hooks_for(self, :rename)

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        @repository = nil
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      rescue
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        # Returning false does not rollback after_* transaction but gives
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        # us information about failing some of tasks
        false
      end
    else
      # if we cannot move namespace directory we should rollback
      # db changes in order to prevent out of sync between db and fs
      raise Exception.new('repository cannot be renamed')
    end
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    Gitlab::UploadsTransfer.new.rename_project(path_was, path, namespace.path)
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  end
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  # Expires various caches before a project is renamed.
  def expire_caches_before_rename(old_path)
    repo = Repository.new(old_path, self)
    wiki = Repository.new("#{old_path}.wiki", self)

    if repo.exists?
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      repo.before_delete
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    end

    if wiki.exists?
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      wiki.before_delete
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    end
  end

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  def hook_attrs(backward: true)
    attrs = {
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      name: name,
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      description: description,
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      web_url: web_url,
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      avatar_url: avatar_url,
      git_ssh_url: ssh_url_to_repo,
      git_http_url: http_url_to_repo,
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      namespace: namespace.name,
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      visibility_level: visibility_level,
      path_with_namespace: path_with_namespace,
      default_branch: default_branch,
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    }
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    # Backward compatibility
    if backward
      attrs.merge!({
                    homepage: web_url,
                    url: url_to_repo,
                    ssh_url: ssh_url_to_repo,
                    http_url: http_url_to_repo
                  })
    end

    attrs
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  end

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  # Reset events cache related to this project
  #
  # Since we do cache @event we need to reset cache in special cases:
  # * when project was moved
  # * when project was renamed
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  # * when the project avatar changes
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  # 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.where(project_id: self.id).
      order('id DESC').limit(100).
      update_all(updated_at: Time.now)
  end
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  def project_member(user)
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    project_members.find_by(user_id: user)
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  end
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  def default_branch
    @default_branch ||= repository.root_ref if repository.exists?
  end
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  def reload_default_branch
    @default_branch = nil
    default_branch
  end
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  def visibility_level_field
    visibility_level
  end
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  def archive!
    update_attribute(:archived, true)
  end

  def unarchive!
    update_attribute(:archived, false)
  end
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  def change_head(branch)
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    repository.before_change_head
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    repository.rugged.references.create('HEAD',
                                        "refs/heads/#{branch}",
                                        force: true)
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    repository.copy_gitattributes(branch)
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    reload_default_branch
  end
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  def forked_from?(project)
    forked? && project == forked_from_project
  end
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  def update_repository_size
    update_attribute(:repository_size, repository.size)
  end
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  def update_commit_count
    update_attribute(:commit_count, repository.commit_count)
  end

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  def forks_count
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    forks.count
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  end
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  def find_label(name)
    labels.find_by(name: name)
  end
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  def origin_merge_requests
    merge_requests.where(source_project_id: self.id)
  end
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  def create_repository
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    # Forked import is handled asynchronously
    unless forked?
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      if gitlab_shell.add_repository(path_with_namespace)
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        repository.after_create
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        true
      else
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        errors.add(:base, 'Failed to create repository via gitlab-shell')
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        false
      end
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    end
  end

  def repository_exists?
    !!repository.exists?
  end

  def create_wiki
    ProjectWiki.new(self, self.owner).wiki
    true
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  rescue ProjectWiki::CouldNotCreateWikiError
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    errors.add(:base, 'Failed create wiki')
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    false
  end
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