Example usage for com.amazonaws.services.s3 AmazonS3Client listVersions

Introduction

In this page you can find the example usage for com.amazonaws.services.s3 AmazonS3Client listVersions.

Prototype

@Override
    public VersionListing listVersions(ListVersionsRequest listVersionsRequest)
            throws SdkClientException, AmazonServiceException 

Source Link

Usage

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

License:Open Source License

@Override
public ListVersionsResponseType listVersions(ListVersionsType request) throws S3Exception {
    ListVersionsResponseType reply = request.getReply();
    User requestUser = getRequestUser(request);
    OsgInternalS3Client internalS3Client = null;

    try {//from w ww.ja  va2  s .c om
        internalS3Client = getS3Client(requestUser);
        AmazonS3Client s3Client = internalS3Client.getS3Client();
        ListVersionsRequest listVersionsRequest = new ListVersionsRequest(request.getBucket(),
                request.getPrefix(), request.getKeyMarker(), request.getVersionIdMarker(),
                request.getDelimiter(), Integer.parseInt(request.getMaxKeys()));
        VersionListing result = s3Client.listVersions(listVersionsRequest);

        CanonicalUser owner;
        try {
            owner = AclUtils.buildCanonicalUser(requestUser.getAccount());
        } catch (AuthException e) {
            LOG.error("Error getting request user's account during bucket version listing", e);
            owner = null;
            throw new AccountProblemException("Account for user " + requestUser.getUserId());
        }

        //Populate result to euca
        reply.setBucket(request.getBucket());
        reply.setMaxKeys(result.getMaxKeys());
        reply.setDelimiter(result.getDelimiter());
        reply.setNextKeyMarker(result.getNextKeyMarker());
        reply.setNextVersionIdMarker(result.getNextVersionIdMarker());
        reply.setIsTruncated(result.isTruncated());
        reply.setVersionIdMarker(result.getVersionIdMarker());
        reply.setKeyMarker(result.getKeyMarker());

        if (result.getCommonPrefixes() != null && result.getCommonPrefixes().size() > 0) {
            reply.setCommonPrefixesList(new ArrayList<CommonPrefixesEntry>());

            for (String s : result.getCommonPrefixes()) {
                reply.getCommonPrefixesList().add(new CommonPrefixesEntry(s));
            }
        }

        ArrayList<KeyEntry> versions = new ArrayList<>();
        VersionEntry v;
        DeleteMarkerEntry d;
        for (S3VersionSummary summary : result.getVersionSummaries()) {
            if (!summary.isDeleteMarker()) {
                v = new VersionEntry();
                v.setKey(summary.getKey());
                v.setVersionId(summary.getVersionId());
                v.setLastModified(DateFormatter.dateToHeaderFormattedString(summary.getLastModified()));
                v.setEtag(summary.getETag());
                v.setIsLatest(summary.isLatest());
                v.setOwner(owner);
                v.setSize(summary.getSize());
                versions.add(v);
            } else {
                d = new DeleteMarkerEntry();
                d.setIsLatest(summary.isLatest());
                d.setKey(summary.getKey());
                d.setLastModified(DateFormatter.dateToHeaderFormattedString(summary.getLastModified()));
                d.setOwner(owner);
                d.setVersionId(summary.getVersionId());
                versions.add(d);
            }
        }
        //Again, this is wrong, should be a single listing
        reply.setKeyEntries(versions);
    } catch (AmazonServiceException e) {
        LOG.debug("Error from backend", e);
        throw S3ExceptionMapper.fromAWSJavaSDK(e);
    }

    return reply;
}

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