From 45f4fe136c763ecd7724cb4ffc6e7025cb3b5442 Mon Sep 17 00:00:00 2001
From: Binal Panchal <51986238+binalp7@users.noreply.github.com>
Date: Mon, 16 Oct 2023 18:15:43 +0530
Subject: [PATCH] PIN-15522 | Rescue Waiter FailureStateError (#299)

---
 lib/moonshot/change_set.rb    | 14 +++++++++++---
 lib/moonshot/unicode_table.rb |  2 --
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/lib/moonshot/change_set.rb b/lib/moonshot/change_set.rb
index 8414ca86..4741dc32 100644
--- a/lib/moonshot/change_set.rb
+++ b/lib/moonshot/change_set.rb
@@ -77,9 +77,17 @@ def delete
     end
 
     def wait_for_change_set
-      @cf_client.wait_until(:change_set_create_complete,
-                            stack_name: @stack_name,
-                            change_set_name: @name)
+      begin
+        @cf_client.wait_until(:change_set_create_complete,
+                              stack_name: @stack_name,
+                              change_set_name: @name)
+      rescue Aws::Waiters::Errors::FailureStateError => e
+        if e.message != 'stopped waiting, encountered a failure state'
+          throw e
+        else
+          puts "The change set didn't contain any new changes."
+        end
+      end
 
       @change_set = @cf_client.describe_change_set(stack_name: @stack_name,
                                                    change_set_name: @name)
diff --git a/lib/moonshot/unicode_table.rb b/lib/moonshot/unicode_table.rb
index 9d580388..813a8820 100644
--- a/lib/moonshot/unicode_table.rb
+++ b/lib/moonshot/unicode_table.rb
@@ -1,5 +1,3 @@
-# frozen_string_literal: true
-
 require 'colorize'
 
 module Moonshot