From 985704a5eac1c72e4367040195d8fb8c554b8fe5 Mon Sep 17 00:00:00 2001
From: Ryan Pelaez <rmpelaez@amazon.com>
Date: Mon, 19 Jun 2023 15:02:16 -0700
Subject: [PATCH] Updated region validation in multilang to be more readible

---
 .../multilang/config/KinesisClientLibConfigurator.java     | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/amazon-kinesis-client-multilang/src/main/java/software/amazon/kinesis/multilang/config/KinesisClientLibConfigurator.java b/amazon-kinesis-client-multilang/src/main/java/software/amazon/kinesis/multilang/config/KinesisClientLibConfigurator.java
index 3a636c6c..b4ca8214 100644
--- a/amazon-kinesis-client-multilang/src/main/java/software/amazon/kinesis/multilang/config/KinesisClientLibConfigurator.java
+++ b/amazon-kinesis-client-multilang/src/main/java/software/amazon/kinesis/multilang/config/KinesisClientLibConfigurator.java
@@ -94,11 +94,8 @@ public class KinesisClientLibConfigurator {
         Validate.isTrue(configuration.getKinesisCredentialsProvider().isDirty(), "A basic set of AWS credentials must be provided");
 
         //Verify Region is real
-        if(configuration.getKinesisClient().get("region") == null){
-            throw new NullPointerException("regionName must be passed in");
-        }
-        final String regionCode = configuration.getKinesisClient().get("region").toString();
-        if (Region.regions().stream().filter(x -> x.id().equalsIgnoreCase(regionCode)).count() == 0) {
+        final String regionCode = String.valueOf(configuration.getKinesisClient().get("region"));
+        if (regionCode == null || Region.regions().stream().filter(x -> x.id().equalsIgnoreCase(regionCode)).count() == 0) {
             throw new IllegalArgumentException(String.format("Unsupported region: %s", regionCode));
         }
         return configuration;