fix: handle SSE in copyObject() properly and have one source code.

Added new version of copyObject(). Note: this method makes source and
destination argument swapping correctly to denote on which bucket and
object the request is sent.

```
public void copyObject(String bucketName, String objectName, Map<String,String> headerMap, ServerSideEncryption sse,
                       String srcBucketName, String srcObjectName, ServerSideEncryption srcSse,
                       CopyConditions copyConditions)
```

examples/CopyObject.java

@@ -70,8 +70,8 @@ public static void main(String[] args)
       bais.close();
       System.out.println("my-objectname is uploaded successfully");
 
-      minioClient.copyObject("my-bucketname", "my-objectname", "my-destbucketname",
-                             "my-objectname-copy");
+      minioClient.copyObject("my-destbucketname", "my-objectname-copy", null, null,
+                             "my-bucketname", "my-objectname", null, null);
       System.out.println("my-objectname-copy copied to my-destbucketname successfully");
     } catch (MinioException e) {
       System.out.println("Error occurred: " + e);

examples/CopyObjectEncrypted.java

@@ -64,8 +64,8 @@ public static void main(String[] args)
       minioClient.putObject("my-bucketname", "my-objectname", bais, Long.valueOf(bais.available()), null, ssePut, null);
       System.out.println("my-objectname is uploaded successfully");
 
-      minioClient.copyObject("my-bucketname", "my-objectname", sseSource, "my-destbucketname",
-                             "my-objectname-copy", null, sseTarget);
+      minioClient.copyObject("my-destbucketname", "my-objectname-copy", null, sseTarget,
+                             "my-bucketname", "my-objectname", sseSource, null);
 
       bais.close();
 

examples/CopyObjectEncryptedKms.java

@@ -61,13 +61,13 @@ public static void main(String[] args)
       bais.close();
       System.out.println("my-objectname is uploaded successfully");
 
-      minioClient.copyObject("my-bucketname", "my-objectname", null, "my-destbucketname",
-                             "my-objectname-copy", null, sse);
+      minioClient.copyObject("my-destbucketname", "my-objectname-copy", null, sse,
+                             "my-bucketname", "my-objectname", null, null);
       System.out.println("my-objectname-copy copied to my-destbucketname successfully");
 
     } catch (MinioException e) {
       System.out.println("Error occurred: " + e);
     }
     System.out.println("finished");
   }
-}
+}

examples/CopyObjectEncryptedS3.java

@@ -55,12 +55,12 @@ public static void main(String[] args)
       bais.close();
       System.out.println("my-objectname is uploaded successfully");
 
-      minioClient.copyObject("my-bucketname", "my-objectname", null, "my-destbucketname",
-                             "my-objectname-copy", null, sse);
+      minioClient.copyObject("my-destbucketname", "my-objectname-copy", null, sse,
+                             "my-bucketname", "my-objectname", null, null);
       System.out.println("my-objectname-copy copied to my-destbucketname successfully");
     } catch (MinioException e) {
       System.out.println("Error occurred: " + e);
     }
     System.out.println("finished");
   }
-}
+}

examples/CopyObjectMetadata.java

@@ -79,8 +79,8 @@ public static void main(String[] args)
       Map<String, String> metadata = new HashMap<>();
       metadata.put("Content-Type", "application/javascript");
 
-      minioClient.copyObject("my-bucketname", "my-objectname", "my-destbucketname",
-                             "my-objectname-copy", copyConditions, metadata);
+      minioClient.copyObject("my-destbucketname", "my-objectname-copy", metadata, null,
+                             "my-bucketname", "my-objectname", null, copyConditions);
       System.out.println("my-objectname-copy copied to my-destbucketname successfully");
     } catch (MinioException e) {
       System.out.println("Error occurred: " + e);

functional/FunctionalTest.java

@@ -2010,7 +2010,7 @@ public static void copyObject_test1() throws Exception {
 
       String destBucketName = getRandomName();
       client.makeBucket(destBucketName);
-      client.copyObject(bucketName, objectName, destBucketName);
+      client.copyObject(destBucketName, objectName, null, null, bucketName, null, null, null);
       client.getObject(destBucketName, objectName).close();
 
       client.removeObject(bucketName, objectName);
@@ -2048,7 +2048,7 @@ public static void copyObject_test2() throws Exception {
       invalidETag.setMatchETag("TestETag");
 
       try {
-        client.copyObject(bucketName, objectName, destBucketName, invalidETag);
+        client.copyObject(destBucketName, objectName, null, null, bucketName, null, null, invalidETag);
       } catch (ErrorResponseException e) {
         if (!e.errorResponse().code().equals("PreconditionFailed")) {
           throw e;
@@ -2094,7 +2094,7 @@ public static void copyObject_test3() throws Exception {
       copyConditions.setMatchETag(stat.etag());
 
       // File should be copied as ETag set in copyConditions matches object's ETag.
-      client.copyObject(bucketName, objectName, destBucketName, copyConditions);
+      client.copyObject(destBucketName, objectName, null, null, bucketName, null, null, copyConditions);
       client.getObject(destBucketName, objectName).close();
 
       client.removeObject(bucketName, objectName);
@@ -2136,7 +2136,7 @@ public static void copyObject_test4() throws Exception {
 
       // File should be copied as ETag set in copyConditions doesn't match object's
       // ETag.
-      client.copyObject(bucketName, objectName, destBucketName, copyConditions);
+      client.copyObject(destBucketName, objectName, null, null, bucketName, null, null, copyConditions);
       client.getObject(destBucketName, objectName).close();
 
       client.removeObject(bucketName, objectName);
@@ -2179,7 +2179,7 @@ public static void copyObject_test5() throws Exception {
       matchingETagNone.setMatchETagNone(stat.etag());
 
       try {
-        client.copyObject(bucketName, objectName, destBucketName, matchingETagNone);
+        client.copyObject(destBucketName, objectName, null, null, bucketName, null, null, matchingETagNone);
       } catch (ErrorResponseException e) {
         // File should not be copied as ETag set in copyConditions matches object's
         // ETag.
@@ -2228,7 +2228,7 @@ public static void copyObject_test6() throws Exception {
       modifiedDateCondition.setModified(dateRepresentation);
 
       // File should be copied as object was modified after the set date.
-      client.copyObject(bucketName, objectName, destBucketName, modifiedDateCondition);
+      client.copyObject(destBucketName, objectName, null, null, bucketName, null, null, modifiedDateCondition);
       client.getObject(destBucketName, objectName).close();
 
       client.removeObject(bucketName, objectName);
@@ -2272,7 +2272,7 @@ public static void copyObject_test7() throws Exception {
       invalidUnmodifiedCondition.setUnmodified(dateRepresentation);
 
       try {
-        client.copyObject(bucketName, objectName, destBucketName, invalidUnmodifiedCondition);
+        client.copyObject(destBucketName, objectName, null, null, bucketName, null, null, invalidUnmodifiedCondition);
       } catch (ErrorResponseException e) {
         // File should not be copied as object was modified after date set in
         // copyConditions.
@@ -2323,7 +2323,8 @@ public static void copyObject_test8() throws Exception {
       Map<String, String> metadata = new HashMap<>();
       metadata.put("Content-Type", customContentType);
 
-      client.copyObject(bucketName, objectName, destBucketName, objectName, copyConditions, metadata);
+      client.copyObject(destBucketName, objectName, metadata, null,
+                        bucketName, objectName, null, copyConditions);
 
       ObjectStat objectStat = client.statObject(destBucketName, objectName);
       if (!customContentType.equals(objectStat.contentType())) {
@@ -2369,7 +2370,8 @@ public static void copyObject_test9() throws Exception {
       CopyConditions copyConditions = new CopyConditions();
       copyConditions.setReplaceMetadataDirective();
 
-      client.copyObject(bucketName, objectName, bucketName, objectName, copyConditions, new HashMap<String, String>());
+      client.copyObject(bucketName, objectName, new HashMap<String, String>(), null,
+                        bucketName, objectName, null, copyConditions);
       ObjectStat objectStat = client.statObject(bucketName, objectName);
       if (objectStat.httpHeaders().containsKey("X-Amz-Meta-Test")) {
         throw new Exception("expected user-defined metadata has been removed");
@@ -2422,7 +2424,7 @@ public static void copyObject_test10() throws Exception {
       CopyConditions copyConditions = new CopyConditions();
       copyConditions.setReplaceMetadataDirective();
 
-      client.copyObject(bucketName, objectName, sseSource, bucketName, objectName, copyConditions, sseTarget);
+      client.copyObject(bucketName, objectName, null, sseTarget, bucketName, objectName, sseSource, copyConditions);
       ObjectStat objectStat = client.statObject(bucketName, objectName, sseTarget);
 
       client.removeObject(bucketName, objectName);
@@ -2463,7 +2465,7 @@ public static void copyObject_test11() throws Exception {
       CopyConditions copyConditions = new CopyConditions();
       copyConditions.setReplaceMetadataDirective();
 
-      client.copyObject(bucketName, objectName, null, bucketName, objectName, copyConditions, sse);
+      client.copyObject(bucketName, objectName, null, sse, bucketName, objectName, null, copyConditions);
       ObjectStat objectStat = client.statObject(bucketName, objectName);
       if (objectStat.httpHeaders().containsKey("X-Amz-Meta-Test")) {
         throw new Exception("expected user-defined metadata has been removed");
@@ -2515,7 +2517,7 @@ public static void copyObject_test12() throws Exception {
       CopyConditions copyConditions = new CopyConditions();
       copyConditions.setReplaceMetadataDirective();
 
-      client.copyObject(bucketName, objectName, null, bucketName, objectName, copyConditions, sse);
+      client.copyObject(bucketName, objectName, null, sse, bucketName, objectName, null, copyConditions);
       ObjectStat objectStat = client.statObject(bucketName, objectName);
       if (objectStat.httpHeaders().containsKey("X-Amz-Meta-Test")) {
         throw new Exception("expected user-defined metadata has been removed");