Example usage for com.amazonaws.services.s3.model GetObjectRequest setNonmatchingETagConstraints

Introduction

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

Prototype

public void setNonmatchingETagConstraints(List<String> eTagList) 

Source Link

Document

Sets the optional list of ETag constraints that when present must not include a match for the object's current ETag in order for this request to be executed.

Usage

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

License:Open Source License

@Override
public GetObjectExtendedResponseType getObjectExtended(final GetObjectExtendedType request) throws S3Exception {
    User requestUser = getRequestUser(request);
    OsgInternalS3Client internalS3Client = null;

    Boolean getMetaData = request.getGetMetaData();
    Long byteRangeStart = request.getByteRangeStart();
    Long byteRangeEnd = request.getByteRangeEnd();
    Date ifModifiedSince = request.getIfModifiedSince();
    Date ifUnmodifiedSince = request.getIfUnmodifiedSince();
    String ifMatch = request.getIfMatch();
    String ifNoneMatch = request.getIfNoneMatch();

    GetObjectRequest getRequest = new GetObjectRequest(request.getBucket(), request.getKey());
    if (byteRangeStart == null) {
        byteRangeStart = 0L;//from w ww  . java  2  s. c  o m
    }
    if (byteRangeEnd != null) {
        getRequest.setRange(byteRangeStart, byteRangeEnd);
    }
    if (getMetaData != null) {
        //Get object metadata
    }
    if (ifModifiedSince != null) {
        getRequest.setModifiedSinceConstraint(ifModifiedSince);
    }
    if (ifUnmodifiedSince != null) {
        getRequest.setUnmodifiedSinceConstraint(ifUnmodifiedSince);
    }
    if (ifMatch != null) {
        List matchList = new ArrayList();
        matchList.add(ifMatch);
        getRequest.setMatchingETagConstraints(matchList);
    }
    if (ifNoneMatch != null) {
        List nonMatchList = new ArrayList();
        nonMatchList.add(ifNoneMatch);
        getRequest.setNonmatchingETagConstraints(nonMatchList);
    }
    try {
        internalS3Client = getS3Client(requestUser);
        AmazonS3Client s3Client = internalS3Client.getS3Client();
        S3Object response = s3Client.getObject(getRequest);

        GetObjectExtendedResponseType reply = request.getReply();
        populateResponseMetadata(reply, response.getObjectMetadata());
        reply.setDataInputStream(response.getObjectContent());
        reply.setByteRangeStart(request.getByteRangeStart());
        reply.setByteRangeEnd(request.getByteRangeEnd());
        return reply;
    } catch (AmazonServiceException e) {
        LOG.debug("Error from backend", e);
        throw S3ExceptionMapper.fromAWSJavaSDK(e);
    }
}

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