Fixing cloudfront signer logic, and changelog (#5892)

* Fixing cloudfront signer logic, and documentation

* Removing unused commit

---------

Co-authored-by: Ran Vaknin <[email protected]>

Author: RanVaknin

.changes/2.30.23.json

@@ -6,7 +6,7 @@
             "type": "bugfix",
             "category": "Amazon Cloudfront",
             "contributor": "",
-            "description": "Decouple policy logic from resource url for getSignedUrlWithCustomPolicy"
+            "description": "Allow users to specify resource URL pattern in `CloudFrontUtilities#getSignedUrlWithCustomPolicy`. See [#5577](https://github.com/aws/aws-sdk-java-v2/issues/5577)"
         },
         {
             "type": "feature",

CHANGELOG.md

@@ -195,7 +195,7 @@
 
 ## __Amazon Cloudfront__
   - ### Bugfixes
-    - Decouple policy logic from resource url for getSignedUrlWithCustomPolicy
+    - Allow users to specify resource URL pattern in `CloudFrontUtilities#getSignedUrlWithCustomPolicy`. See [#5577](https://github.com/aws/aws-sdk-java-v2/issues/5577)
 
 ## __Amazon EMR Containers__
   - ### Features

services/cloudfront/src/main/java/software/amazon/awssdk/services/cloudfront/CloudFrontUtilities.java

@@ -33,7 +33,6 @@
 import software.amazon.awssdk.services.cloudfront.model.CannedSignerRequest;
 import software.amazon.awssdk.services.cloudfront.model.CustomSignerRequest;
 import software.amazon.awssdk.services.cloudfront.url.SignedUrl;
-import software.amazon.awssdk.utils.StringUtils;
 
 /**
  *
@@ -258,7 +257,7 @@ public SignedUrl getSignedUrlWithCustomPolicy(Consumer<CustomSignerRequest.Build
     public SignedUrl getSignedUrlWithCustomPolicy(CustomSignerRequest request) {
         String resourceUrl = request.resourceUrl();
         try {
-            String resourceUrlPattern = StringUtils.isEmpty(request.resourceUrlPattern())
+            String resourceUrlPattern = request.resourceUrlPattern() == null
                                         ? request.resourceUrl()
                                         : request.resourceUrlPattern();