Method handleFunctionCall

rest/functions_api.go:29–57

FUNCTIONS: HTTP handler for GET or POST `/$db/_function/$name`

()

// HTTP handler for GET or POST `/$db/_function/$name`
func (h *handler) handleFunctionCall() error {
	var maxRequestSize *int
	if h.db.Options.UserFunctions != nil {
		maxRequestSize = h.db.Options.UserFunctions.MaxRequestSize
	}
	fnName, fnParams, err := h.getFunctionArgs(maxRequestSize)
	if err != nil {
		return err
	}
	canMutate := h.rq.Method != "GET"

	return db.WithTimeout(h.ctx(), h.db.UserFunctionTimeout, func(ctx context.Context) error {
		fn, err := h.db.GetUserFunction(ctx, fnName, fnParams, canMutate)
		if err != nil {
			return err
		} else if rows, err := fn.Iterate(); err != nil {
			return err
		} else if rows != nil {
			return h.writeQueryRows(rows)
		} else {
			// Write the single result to the response:
			result, err := fn.Run(ctx)
			if err == nil {
				h.writeJSON(result)
			}
			return err
		}
	})
}

// Subroutine for reading function name and arguments from a request
func (h *handler) getFunctionArgs(maxSize *int) (string, map[string]interface{}, error) {