Ceph object store: Fix LocationConstraint error (apache#10772)

* Don't set signingRegion as auto for creating the s3 client in ceph object store provider.

* replace getBucketAcl with doesBucketExistV2 in CephObjectStoreDriverImplTest

Author: abh1sar

plugins/storage/object/ceph/src/main/java/org/apache/cloudstack/storage/datastore/driver/CephObjectStoreDriverImpl.java

@@ -95,8 +95,8 @@ public Bucket createBucket(Bucket bucket, boolean objectLock) {
         AmazonS3 s3client = getS3Client(storeId, accountId);
 
         try {
-            if (s3client.getBucketAcl(bucketName) != null) {
-                throw new CloudRuntimeException("Bucket already exists with name " + bucketName);
+            if (s3client.doesBucketExistV2(bucketName)) {
+                throw new CloudRuntimeException("Bucket already exists with the name: " + bucketName);
             }
         } catch (AmazonS3Exception e) {
             if (e.getStatusCode() != 404) {
@@ -221,9 +221,11 @@ public boolean createUser(long accountId, long storeId) {
             if (user.isPresent()) {
                 logger.info("User already exists in Ceph RGW: " + username);
                 return true;
+            } else {
+                logger.debug("User does not exist. Creating user in Ceph RGW: " + username);
             }
         } catch (Exception e) {
-            logger.debug("User does not exist. Creating user in Ceph RGW: " + username);
+            logger.debug("Get user info failed for user {} with exception {}. Proceeding with user creation.",  username, e.getMessage());
         }
 
         try {
@@ -348,7 +350,7 @@ protected AmazonS3 getS3Client(String url, String accessKey, String secretKey) {
                         new AWSStaticCredentialsProvider(
                                 new BasicAWSCredentials(accessKey, secretKey)))
                 .withEndpointConfiguration(
-                        new AwsClientBuilder.EndpointConfiguration(url, "auto"))
+                        new AwsClientBuilder.EndpointConfiguration(url, null))
                 .build();
 
         if (client == null) {

plugins/storage/object/ceph/src/test/java/org/apache/cloudstack/storage/datastore/driver/CephObjectStoreDriverImplTest.java

@@ -96,7 +96,7 @@ public void testCreateBucket() throws Exception {
         when(bucketDao.findById(anyLong())).thenReturn(new BucketVO(bucket.getName()));
         Bucket bucketRet = cephObjectStoreDriverImpl.createBucket(bucket, false);
         assertEquals(bucketRet.getName(), bucket.getName());
-        verify(rgwClient, times(1)).getBucketAcl(anyString());
+        verify(rgwClient, times(1)).doesBucketExistV2(anyString());
         verify(rgwClient, times(1)).createBucket(anyString());
     }