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# frozen_string_literal: true
module Gitlab
module CurrentSettings
class << self
def current_application_settings
Gitlab::SafeRequestStore.fetch(:current_application_settings) { ensure_application_settings! }
end
def clear_in_memory_application_settings!
@in_memory_application_settings = nil
end
def method_missing(name, *args, &block)
current_application_settings.send(name, *args, &block) # rubocop:disable GitlabSecurity/PublicSend
end
def respond_to_missing?(name, include_private = false)
current_application_settings.respond_to?(name, include_private) || super
end
private
def ensure_application_settings!
cached_application_settings || uncached_application_settings
end
def cached_application_settings
return in_memory_application_settings if ENV['IN_MEMORY_APPLICATION_SETTINGS'] == 'true'
begin
::ApplicationSetting.cached
rescue
# In case Redis isn't running
# or the Redis UNIX socket file is not available
# or the DB is not running (we use migrations in the cache key)
end
end
def uncached_application_settings
return fake_application_settings unless connect_to_db?
current_settings = ::ApplicationSetting.current
# If there are pending migrations, it's possible there are columns that
# need to be added to the application settings. To prevent Rake tasks
# and other callers from failing, use any loaded settings and return
# defaults for missing columns.
if ActiveRecord::Migrator.needs_migration?
db_attributes = current_settings&.attributes || {}
fake_application_settings(db_attributes)
elsif current_settings.present?
current_settings
else
::ApplicationSetting.create_from_defaults
end
end
def fake_application_settings(attributes = {})
Gitlab::FakeApplicationSettings.new(::ApplicationSetting.defaults.merge(attributes || {}))
end
def in_memory_application_settings
@in_memory_application_settings ||= ::ApplicationSetting.build_from_defaults
end
def connect_to_db?
# When the DBMS is not available, an exception (e.g. PG::ConnectionBad) is raised
active_db_connection = ActiveRecord::Base.connection.active? rescue false
active_db_connection &&
Gitlab::Database.cached_table_exists?('application_settings')
rescue ActiveRecord::NoDatabaseError
false
end
end
end
end
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