updated AWSS3UrlReader to support CN domain

Signed-off-by: tejashwikalptaru <ext.tejashwi.taru@ef.com>

packages/backend-common/src/reading/AwsS3UrlReader.test.ts

@@ -53,6 +53,39 @@ describe('parseUrl', () => {
       bucket: 'my.bucket-3',
       region: 'us-east-1',
     });
+    expect(
+      parseUrl('https://s3.amazonaws.com.cn/my.bucket-3/a/puppy.jpg', {
+        host: 'amazonaws.com',
+      }),
+    ).toEqual({
+      path: 'a/puppy.jpg',
+      bucket: 'my.bucket-3',
+      region: 'us-east-1',
+    });
+    expect(
+      parseUrl(
+        'https://ec-backstage-staging.s3.cn-north-1.amazonaws.com.cn/payments-prod-oas30.json',
+        {
+          host: 'amazonaws.com',
+        },
+      ),
+    ).toEqual({
+      path: 'payments-prod-oas30.json',
+      bucket: 'ec-backstage-staging',
+      region: 'cn-north-1',
+    });
+    expect(
+      parseUrl(
+        'https://ec-backstage-staging.s3.cn-north-1.amazonaws.com.cn/payments-prod-oas30.json',
+        {
+          host: 'amazonaws.com.cn',
+        },
+      ),
+    ).toEqual({
+      path: 'payments-prod-oas30.json',
+      bucket: 'ec-backstage-staging',
+      region: 'cn-north-1',
+    });
     expect(
       parseUrl('https://s3.us-west-2.amazonaws.com/my.bucket-3/a/puppy.jpg', {
         host: 'amazonaws.com',

packages/backend-common/src/reading/AwsS3UrlReader.ts

@@ -69,9 +69,9 @@ export function parseUrl(
   const host = parsedUrl.host;
 
   // Treat Amazon hosted separately because it has special region logic
-  if (config.host === 'amazonaws.com') {
+  if (config.host === 'amazonaws.com' || config.host === 'amazonaws.com.cn') {
     const match = host.match(
-      /^(?:([a-z0-9.-]+)\.)?s3(?:[.-]([a-z0-9-]+))?\.amazonaws\.com$/,
+      /^(?:([a-z0-9.-]+)\.)?s3(?:[.-]([a-z0-9-]+))?\.amazonaws\.com(\.cn)?$/,
     );
     if (!match) {
       throw new Error(`Invalid AWS S3 URL ${url}`);