From 7b1bfc80a43168ae2ca572445f50bb0595429ee3 Mon Sep 17 00:00:00 2001
From: Vasiliy Tolstov <v.tolstov@unistack.org>
Date: Wed, 30 Jun 2021 05:49:43 +0300
Subject: [PATCH] add fallback

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
---
 flow/options.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/flow/options.go b/flow/options.go
index 0db4d324..f3066311 100644
--- a/flow/options.go
+++ b/flow/options.go
@@ -190,6 +190,7 @@ type StepOptions struct {
 	ID       string
 	Context  context.Context
 	Requires []string
+	Fallback string
 }
 
 type StepOption func(*StepOptions)
@@ -213,3 +214,9 @@ func StepRequires(steps ...string) StepOption {
 		o.Requires = steps
 	}
 }
+
+func StepFallback(step string) StepOption {
+	return func(o *StepOptions) {
+		o.Fallback = step
+	}
+}