Example usage for com.amazonaws.services.s3.model ListObjectsV2Request setMaxKeys

Introduction

In this page you can find the example usage for com.amazonaws.services.s3.model ListObjectsV2Request setMaxKeys.

Prototype

public void setMaxKeys(Integer maxKeys) 

Source Link

Document

Sets the optional maxKeys parameter indicating the maximum number of keys to include in the response.

Usage

From source file:net.solarnetwork.node.backup.s3.SdkS3Client.java

License:Open Source License

@Override
public Set<S3ObjectReference> listObjects(String prefix) throws IOException {
    AmazonS3 client = getClient();/*from  w  ww  .  j  a v a  2s.com*/
    Set<S3ObjectReference> result = new LinkedHashSet<>(100);
    try {
        final ListObjectsV2Request req = new ListObjectsV2Request();
        req.setBucketName(bucketName);
        req.setMaxKeys(maximumKeysPerRequest);
        req.setPrefix(prefix);
        ListObjectsV2Result listResult;
        do {
            listResult = client.listObjectsV2(req);

            for (S3ObjectSummary objectSummary : listResult.getObjectSummaries()) {
                result.add(new S3ObjectReference(objectSummary.getKey(), objectSummary.getSize(),
                        objectSummary.getLastModified()));
            }
            req.setContinuationToken(listResult.getNextContinuationToken());
        } while (listResult.isTruncated() == true);

    } catch (AmazonServiceException e) {
        log.warn("AWS error: {}; HTTP code {}; AWS code {}; type {}; request ID {}", e.getMessage(),
                e.getStatusCode(), e.getErrorCode(), e.getErrorType(), e.getRequestId());
        throw new RemoteServiceException("Error listing S3 objects at " + prefix, e);
    } catch (AmazonClientException e) {
        log.debug("Error communicating with AWS: {}", e.getMessage());
        throw new IOException("Error communicating with AWS", e);
    }
    return result;
}

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