debian-mirror-gitlab/app/models/concerns/routable.rb

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# frozen_string_literal: true
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# Store object full path in separate table for easy lookup and uniq validation
# Object must have name and path db fields and respond to parent and parent_changed? methods.
module Routable
extend ActiveSupport::Concern
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include CaseSensitivity
# Finds a Routable object by its full path, without knowing the class.
#
# Usage:
#
# Routable.find_by_full_path('groupname') # -> Group
# Routable.find_by_full_path('groupname/projectname') # -> Project
#
# Returns a single object, or nil.
def self.find_by_full_path(path, follow_redirects: false, route_scope: Route, redirect_route_scope: RedirectRoute)
return unless path.present?
# Case sensitive match first (it's cheaper and the usual case)
# If we didn't have an exact match, we perform a case insensitive search
#
# We need to qualify the columns with the table name, to support both direct lookups on
# Route/RedirectRoute, and scoped lookups through the Routable classes.
route =
route_scope.find_by(routes: { path: path }) ||
route_scope.iwhere(Route.arel_table[:path] => path).take
if follow_redirects
route ||= redirect_route_scope.iwhere(RedirectRoute.arel_table[:path] => path).take
end
return unless route
route.is_a?(Routable) ? route : route.source
end
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included do
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# Remove `inverse_of: source` when upgraded to rails 5.2
# See https://github.com/rails/rails/pull/28808
has_one :route, as: :source, autosave: true, dependent: :destroy, inverse_of: :source # rubocop:disable Cop/ActiveRecordDependent
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has_many :redirect_routes, as: :source, autosave: true, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
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validates :route, presence: true, unless: -> { is_a?(Namespaces::ProjectNamespace) }
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scope :with_route, -> { includes(:route) }
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after_validation :set_path_errors
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before_validation :prepare_route
before_save :prepare_route # in case validation is skipped
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end
class_methods do
# Finds a single object by full path match in routes table.
#
# Usage:
#
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# Klass.find_by_full_path('gitlab-org/gitlab-foss')
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#
# Returns a single object, or nil.
def find_by_full_path(path, follow_redirects: false)
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# TODO: Optimize these queries by avoiding joins
# https://gitlab.com/gitlab-org/gitlab/-/issues/292252
Routable.find_by_full_path(
path,
follow_redirects: follow_redirects,
route_scope: includes(:route).references(:routes),
redirect_route_scope: joins(:redirect_routes)
)
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end
# Builds a relation to find multiple objects by their full paths.
#
# Usage:
#
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# Klass.where_full_path_in(%w{gitlab-org/gitlab-foss gitlab-org/gitlab})
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#
# Returns an ActiveRecord::Relation.
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def where_full_path_in(paths, use_includes: true)
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return none if paths.empty?
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wheres = paths.map do |path|
"(LOWER(routes.path) = LOWER(#{connection.quote(path)}))"
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end
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route =
if use_includes
includes(:route).references(:routes)
else
joins(:route)
end
route.where(wheres.join(' OR '))
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end
end
def full_name
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# We have to test for persistence as the cache key uses #updated_at
return (route&.name || build_full_name) unless persisted? && Feature.enabled?(:cached_route_lookups, self, type: :ops, default_enabled: :yaml)
# Return the name as-is if the parent is missing
return name if route.nil? && parent.nil? && name.present?
# If the route is already preloaded, return directly, preventing an extra load
return route.name if route_loaded? && route.present?
# Similarly, we can allow the build if the parent is loaded
return build_full_name if parent_loaded?
Gitlab::Cache.fetch_once([cache_key, :full_name]) do
route&.name || build_full_name
end
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end
def full_path
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# We have to test for persistence as the cache key uses #updated_at
return (route&.path || build_full_path) unless persisted? && Feature.enabled?(:cached_route_lookups, self, type: :ops, default_enabled: :yaml)
# Return the path as-is if the parent is missing
return path if route.nil? && parent.nil? && path.present?
# If the route is already preloaded, return directly, preventing an extra load
return route.path if route_loaded? && route.present?
# Similarly, we can allow the build if the parent is loaded
return build_full_path if parent_loaded?
Gitlab::Cache.fetch_once([cache_key, :full_path]) do
route&.path || build_full_path
end
end
# Overriden in the Project model
# parent_id condition prevents issues with parent reassignment
def parent_loaded?
association(:parent).loaded?
end
def route_loaded?
association(:route).loaded?
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end
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def full_path_components
full_path.split('/')
end
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def build_full_path
if parent && path
parent.full_path + '/' + path
else
path
end
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end
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# Group would override this to check from association
def owned_by?(user)
owner == user
end
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private
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def set_path_errors
route_path_errors = self.errors.delete(:"route.path")
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route_path_errors&.each do |msg|
self.errors.add(:path, msg)
end
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end
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def full_name_changed?
name_changed? || parent_changed?
end
def full_path_changed?
path_changed? || parent_changed?
end
def build_full_name
if parent && name
parent.human_name + ' / ' + name
else
name
end
end
def prepare_route
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return unless full_path_changed? || full_name_changed?
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return if is_a?(Namespaces::ProjectNamespace)
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route || build_route(source: self)
route.path = build_full_path
route.name = build_full_name
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route.namespace = if is_a?(Namespace)
self
elsif is_a?(Project)
self.project_namespace
end
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end
end