+
+ def api_call_handle_error
+ yield
+ rescue ActionController::UnknownFormat
+ head :not_acceptable
+ rescue ActiveRecord::RecordNotFound => e
+ head :not_found
+ rescue LibXML::XML::Error, ArgumentError => e
+ report_error e.message, :bad_request
+ rescue ActiveRecord::RecordInvalid => e
+ message = "#{e.record.class} #{e.record.id}: "
+ e.record.errors.each { |error| message << "#{error.attribute}: #{error.message} (#{e.record[error.attribute].inspect})" }
+ report_error message, :bad_request
+ rescue OSM::APIError => e
+ report_error e.message, e.status
+ rescue AbstractController::ActionNotFound => e
+ raise
+ rescue StandardError => e
+ logger.info("API threw unexpected #{e.class} exception: #{e.message}")
+ e.backtrace.each { |l| logger.info(l) }
+ report_error "#{e.class}: #{e.message}", :internal_server_error
+ end
+
+ ##
+ # asserts that the request method is the +method+ given as a parameter
+ # or raises a suitable error. +method+ should be a symbol, e.g: :put or :get.
+ def assert_method(method)
+ ok = request.send(:"#{method.to_s.downcase}?")
+ raise OSM::APIBadMethodError, method unless ok
+ end
+
+ ##
+ # wrap an api call in a timeout
+ def api_call_timeout(&block)
+ Timeout.timeout(Settings.api_timeout, &block)
+ rescue ActionView::Template::Error => e
+ e = e.cause
+
+ if e.is_a?(Timeout::Error) ||
+ (e.is_a?(ActiveRecord::StatementInvalid) && e.message.include?("execution expired"))
+ ActiveRecord::Base.connection.raw_connection.cancel
+ raise OSM::APITimeoutError
+ else
+ raise
+ end
+ rescue Timeout::Error
+ ActiveRecord::Base.connection.raw_connection.cancel
+ raise OSM::APITimeoutError
+ end
+
+ ##
+ # check the api change rate limit
+ def check_rate_limit(new_changes = 1)
+ max_changes = ActiveRecord::Base.connection.select_value(
+ "SELECT api_rate_limit($1)", "api_rate_limit", [current_user.id]
+ )
+
+ raise OSM::APIRateLimitExceeded if new_changes > max_changes
+ end