java.lang.NoClassDefFoundError: software/amazon/awssdk/services/s3/internal/crt/S3CrtAsyncClient

[Fais-007]

Earlier I was using S3TransferManager 2.17.190 but issue with it is that it is not downloading the files from the S3 bucket. I figured that there might be any bug in the old jar so I upgraded to latest version 2.17.267. When I am using this jar I am getting
Caused by: java.lang.NoClassDefFoundError: software/amazon/awssdk/services/s3/internal/crt/S3CrtAsyncClient
at software.amazon.awssdk.transfer.s3.internal.DefaultS3TransferManager.initializeS3CrtClient(DefaultS3TransferManager.java:104) ~[aws-s3-transfer-manager-2.17.267-PREVIEW.jar:?]
at software.amazon.awssdk.transfer.s3.internal.DefaultS3TransferManager.(DefaultS3TransferManager.java:76) ~[aws-s3-transfer-manager-2.17.267-PREVIEW.jar:?]
at software.amazon.awssdk.transfer.s3.internal.DefaultS3TransferManager$DefaultBuilder.build(DefaultS3TransferManager.java:426) ~[aws-s3-transfer-manager-2.17.267-PREVIEW.jar:?]

The code that I am using is:
public static S3TransferManager getTransferManagerInstance() {
long MB = 1024;
AwsCredentialsProvider awsCredentialsProvider = awsCredentialProvider();
S3ClientConfiguration.Builder s3ClientConfiguration = S3ClientConfiguration.builder();
if (awsCredentialsProvider == null) {
s3ClientConfiguration.credentialsProvider(EnvironmentVariableCredentialsProvider.create());
} else {
s3ClientConfiguration.credentialsProvider(awsCredentialsProvider);
}
s3ClientConfiguration.region(bucketRegion).targetThroughputInGbps(20.0).minimumPartSizeInBytes(10 * MB);
return S3TransferManager.builder().s3ClientConfiguration(s3ClientConfiguration.build()).build();
}

public static void downloadS3Directory(String awsDirPath, String dirPath) {
	try {
		logger.info("******DOWNLOAD DIRECTORY FROM S3****" + awsDirPath + "*****" + dirPath);

		String bucketName = getS3BucketName();

		S3TransferManager transferManager = getTransferManagerInstance();
		DirectoryDownload directoryDownload = transferManager.downloadDirectory(DownloadDirectoryRequest.builder()
				.bucket(bucketName)
				.prefix(awsDirPath)
				.destinationDirectory(Paths.get(dirPath.substring(0, dirPath.indexOf(awsDirPath))))
				.build());

		CompletedDirectoryDownload completedDirectoryDownload = directoryDownload.completionFuture().join();

		completedDirectoryDownload.failedTransfers().forEach(logger::error);
		transferManager.close();
	} catch (S3Exception e) {
		logger.error("AmazonServiceException in downloadS3Directory.", e);
	} catch (Exception e) {
		logger.error("Exception in downloadS3Directory.", e);
	}
}

Mine is legacy code so it does not uses pom,xml I manually have to import all the jars. While searching for the above jar I was not able to find any that contains above class. Can you please help me?

[debora-ito]

S3CrtAsyncClient is in software.amazon.awssdk:s3 module.

If you need to pull in all the TransferManager dependencies manually, take a look at the TransferManager module's pom.xml: https://github.com/aws/aws-sdk-java-v2/blob/master/services-custom/s3-transfer-manager/pom.xml

[github-actions[bot]]

Hello! Reopening this discussion to make it searchable.