com.emc.vipr.services.s3.ViPRS3ObjectResponseHandler Maven / Gradle / Ivy
/*
* Copyright 2013 EMC Corporation. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.emc.vipr.services.s3;
import com.amazonaws.AmazonWebServiceResponse;
import com.amazonaws.http.HttpResponse;
import com.amazonaws.services.s3.internal.S3ObjectResponseHandler;
import com.amazonaws.services.s3.model.S3Object;
/**
* AWS code looks for a hyphen in the ETag to signify a multipart upload, in which case it will not use the ETag as a
* checksum. ViPR v1 returns "00" in the ETag for objects uploaded via multipart (no hyphen). This handler will add the
* hyphen to the ETag so that it is correctly interpreted as a multipart upload and the ETag is ignored. Otherwise
* it is treated as a checksum and an exception is thrown when it fails to validate.
* TODO: remove post v1 when ViPR will return a hyphen in the ETag for multipart uploads
*/
public class ViPRS3ObjectResponseHandler extends S3ObjectResponseHandler {
@Override
public AmazonWebServiceResponse handle(HttpResponse response) throws Exception {
// check for "00" in the ETag and append a hyphen so AWS code knows this was a multipart upload (does not have
// an accurate MD5 checksum in the ETag).
String etag = response.getHeaders().get("ETag");
if (etag != null && etag.matches("\"?[0-9][0-9]\"?"))
response.getHeaders().put("ETag", etag + "-");
return super.handle(response);
}
}
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