/* (non-Javadoc)
* @see com.amazonaws.services.s3.AmazonS3Client#completeMultipartUpload(com.amazonaws.services.s3.model.CompleteMultipartUploadRequest)
*/
@Override
public CompleteMultipartUploadResult completeMultipartUpload(
CompleteMultipartUploadRequest completeMultipartUploadRequest)
throws AmazonClientException, AmazonServiceException {
appendUserAgent(completeMultipartUploadRequest, USER_AGENT);
String uploadId = completeMultipartUploadRequest.getUploadId();
EncryptedUploadContext encryptedUploadContext = currentMultipartUploadSecretKeys.get(uploadId);
if (encryptedUploadContext.hasFinalPartBeenSeen() == false) {
throw new AmazonClientException(
"Unable to complete an encrypted multipart upload without being told which part was the last. "
+ "Without knowing which part was the last, the encrypted data in Amazon S3 is incomplete and corrupt.");
}
CompleteMultipartUploadResult result =
super.completeMultipartUpload(completeMultipartUploadRequest);
// In InstructionFile mode, we want to write the instruction file only after the whole upload
// has completed correctly.
if (cryptoConfig.getStorageMode() == CryptoStorageMode.InstructionFile) {
Cipher symmetricCipher =
EncryptionUtils.createSymmetricCipher(
encryptedUploadContext.getEnvelopeEncryptionKey(),
Cipher.ENCRYPT_MODE,
cryptoConfig.getCryptoProvider(),
encryptedUploadContext.getFirstInitializationVector());
EncryptionMaterials encryptionMaterials =
encryptionMaterialsProvider.getEncryptionMaterials();
// Encrypt the envelope symmetric key
byte[] encryptedEnvelopeSymmetricKey =
EncryptionUtils.getEncryptedSymmetricKey(
encryptedUploadContext.getEnvelopeEncryptionKey(),
encryptionMaterials,
cryptoConfig.getCryptoProvider());
EncryptionInstruction instruction =
new EncryptionInstruction(
encryptionMaterials.getMaterialsDescription(),
encryptedEnvelopeSymmetricKey,
encryptedUploadContext.getEnvelopeEncryptionKey(),
symmetricCipher);
// Put the instruction file into S3
super.putObject(
EncryptionUtils.createInstructionPutRequest(
encryptedUploadContext.getBucketName(),
encryptedUploadContext.getKey(),
instruction));
}
currentMultipartUploadSecretKeys.remove(uploadId);
return result;
}
