Use GetObjectAttributes with an AWS SDK - AWS SDK Code Examples

There are more AWS SDK examples available in the AWS Doc SDK Examples GitHub repo.

Use GetObjectAttributes with an AWS SDK

The following code example shows how to use GetObjectAttributes.

Java
SDK for Java 2.x
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository.

Get an object attributes from a directory bucket.


import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.GetObjectAttributesRequest;
import software.amazon.awssdk.services.s3.model.GetObjectAttributesResponse;
import software.amazon.awssdk.services.s3.model.ObjectAttributes;
import software.amazon.awssdk.services.s3.model.S3Exception;

import java.nio.file.Path;

import static com.example.s3.util.S3DirectoryBucketUtils.createDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.createS3Client;
import static com.example.s3.util.S3DirectoryBucketUtils.deleteAllObjectsInDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.deleteDirectoryBucket;
import static com.example.s3.util.S3DirectoryBucketUtils.getFilePath;
import static com.example.s3.util.S3DirectoryBucketUtils.putDirectoryBucketObject;

    /**
     * Retrieves attributes for an object in the specified S3 directory bucket.
     *
     * @param s3Client   The S3 client used to interact with S3
     * @param bucketName The name of the directory bucket
     * @param objectKey  The key (name) of the object to retrieve attributes for
     * @return True if the object attributes are successfully retrieved, false
     *         otherwise
     */
    public static boolean getDirectoryBucketObjectAttributes(S3Client s3Client, String bucketName, String objectKey) {
        logger.info("Retrieving attributes for object: {} from bucket: {}", objectKey, bucketName);

        try {
            // Create a GetObjectAttributesRequest
            GetObjectAttributesRequest getObjectAttributesRequest = GetObjectAttributesRequest.builder()
                    .bucket(bucketName)
                    .key(objectKey)
                    .objectAttributes(ObjectAttributes.E_TAG, ObjectAttributes.STORAGE_CLASS,
                            ObjectAttributes.OBJECT_SIZE)
                    .build();

            // Retrieve the object attributes
            GetObjectAttributesResponse response = s3Client.getObjectAttributes(getObjectAttributesRequest);
            logger.info("Attributes for object {}:", objectKey);
            logger.info("ETag: {}", response.eTag());
            logger.info("Storage Class: {}", response.storageClass());
            logger.info("Object Size: {}", response.objectSize());
            return true;

        } catch (S3Exception e) {
            logger.error("Failed to retrieve object attributes: {} - Error code: {}",
                    e.awsErrorDetails().errorMessage(), e.awsErrorDetails().errorCode(), e);
            return false;
        }
    }