Example usage for com.amazonaws.services.s3.model CopyObjectRequest setMatchingETagConstraints

Introduction

In this page you can find the example usage for com.amazonaws.services.s3.model CopyObjectRequest setMatchingETagConstraints.

Prototype

public void setMatchingETagConstraints(List<String> eTagList) 

Source Link

Document

Sets the optional list of ETag constraints that, when present, must include a match for the source object's current ETag in order for the copy object request to be executed.

Usage

From source file:com.eucalyptus.objectstorage.providers.s3.S3ProviderClient.java

License:Open Source License

@Override
public CopyObjectResponseType copyObject(CopyObjectType request) throws S3Exception {
    CopyObjectResponseType reply = request.getReply();
    User requestUser = getRequestUser(request);
    OsgInternalS3Client internalS3Client = null;

    String sourceBucket = request.getSourceBucket();
    String sourceKey = request.getSourceObject();
    String sourceVersionId = request.getSourceVersionId();
    String destinationBucket = request.getDestinationBucket();
    String destinationKey = request.getDestinationObject();
    String copyIfMatch = request.getCopySourceIfMatch();
    String copyIfNoneMatch = request.getCopySourceIfNoneMatch();
    Date copyIfUnmodifiedSince = request.getCopySourceIfUnmodifiedSince();
    Date copyIfModifiedSince = request.getCopySourceIfModifiedSince();
    try {//from w  ww  .j  a v  a  2s .co m
        CopyObjectRequest copyRequest = new CopyObjectRequest(sourceBucket, sourceKey, sourceVersionId,
                destinationBucket, destinationKey);
        copyRequest.setModifiedSinceConstraint(copyIfModifiedSince);
        copyRequest.setUnmodifiedSinceConstraint(copyIfUnmodifiedSince);
        if (copyIfMatch != null) {
            List<String> copyIfMatchConstraint = new ArrayList<String>();
            copyIfMatchConstraint.add(copyIfMatch);
            copyRequest.setMatchingETagConstraints(copyIfMatchConstraint);
        }
        if (copyIfNoneMatch != null) {
            List<String> copyIfNoneMatchConstraint = new ArrayList<String>();
            copyIfNoneMatchConstraint.add(copyIfNoneMatch);
            copyRequest.setNonmatchingETagConstraints(copyIfNoneMatchConstraint);
        }
        //TODO: Need to set canned ACL if specified
        internalS3Client = getS3Client(requestUser);
        AmazonS3Client s3Client = internalS3Client.getS3Client();
        CopyObjectResult result = s3Client.copyObject(copyRequest);
        reply.setEtag(result.getETag());
        reply.setLastModified(DateFormatter.dateToListingFormattedString(result.getLastModifiedDate()));
        String destinationVersionId = result.getVersionId();
        if (destinationVersionId != null) {
            reply.setCopySourceVersionId(sourceVersionId);
            reply.setVersionId(destinationVersionId);
        }
    } catch (AmazonServiceException e) {
        LOG.debug("Error from backend", e);
        throw S3ExceptionMapper.fromAWSJavaSDK(e);
    }
    return reply;

}

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