Allow Quiet element in DeleteMultipleObjects

Fixes #173.

src/main/java/org/gaul/s3proxy/DeleteMultipleObjectsRequest.java

@@ -23,6 +23,9 @@ import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
 
 // CHECKSTYLE:OFF
 final class DeleteMultipleObjectsRequest {
+    @JacksonXmlProperty(localName = "Quiet")
+    boolean quiet;
+
     @JacksonXmlProperty(localName = "Object")
     @JacksonXmlElementWrapper(useWrapping = false)
     Collection<S3Object> objects;

src/main/java/org/gaul/s3proxy/S3ProxyHandler.java

@@ -1286,13 +1286,17 @@ public class S3ProxyHandler {
             xml.writeStartDocument();
             xml.writeStartElement("DeleteResult");
             xml.writeDefaultNamespace(AWS_XMLNS);
-            for (String blobName : blobNames) {
-                xml.writeStartElement("Deleted");
 
-                writeSimpleElement(xml, "Key", blobName);
+            if (!dmor.quiet) {
+                for (String blobName : blobNames) {
+                    xml.writeStartElement("Deleted");
 
-                xml.writeEndElement();
+                    writeSimpleElement(xml, "Key", blobName);
+
+                    xml.writeEndElement();
+                }
             }
+
             // TODO: emit error stanza
             xml.writeEndElement();
             xml.flush();

src/test/java/org/gaul/s3proxy/S3AwsSdkTest.java

@@ -51,6 +51,8 @@ import com.amazonaws.services.s3.model.CompleteMultipartUploadRequest;
 import com.amazonaws.services.s3.model.CompleteMultipartUploadResult;
 import com.amazonaws.services.s3.model.CopyPartRequest;
 import com.amazonaws.services.s3.model.CopyPartResult;
+import com.amazonaws.services.s3.model.DeleteObjectsRequest;
+import com.amazonaws.services.s3.model.DeleteObjectsResult;
 import com.amazonaws.services.s3.model.GetObjectRequest;
 import com.amazonaws.services.s3.model.GroupGrantee;
 import com.amazonaws.services.s3.model.InitiateMultipartUploadRequest;
@@ -501,6 +503,32 @@ public final class S3AwsSdkTest {
             .isEqualTo(expiresTime);
     }
 
+    @Test
+    public void testDeleteMultipleObjects() throws Exception {
+        String blobName = "foo";
+        ObjectMetadata metadata = new ObjectMetadata();
+        metadata.setContentLength(BYTE_SOURCE.size());
+
+        DeleteObjectsRequest request = new DeleteObjectsRequest(containerName)
+                .withKeys(blobName);
+
+        // without quiet
+        client.putObject(containerName, blobName, BYTE_SOURCE.openStream(),
+                metadata);
+
+        DeleteObjectsResult result = client.deleteObjects(request);
+        assertThat(result.getDeletedObjects()).hasSize(1);
+        assertThat(result.getDeletedObjects().iterator().next().getKey())
+                .isEqualTo(blobName);
+
+        // with quiet
+        client.putObject(containerName, blobName, BYTE_SOURCE.openStream(),
+                metadata);
+
+        result = client.deleteObjects(request.withQuiet(true));
+        assertThat(result.getDeletedObjects()).isEmpty();
+    }
+
     @Test
     public void testPartNumberMarker() throws Exception {
         String blobName = "foo";