AWS SDK 2 assume role

Question

@Bean
public DynamoDbClient amazonDynamoDB() {
    final AssumeRoleRequest assumeRoleRequest = AssumeRoleRequest.builder().roleSessionName(UUID.randomUUID().toString()).roleArn("roleArn").build();
    final StsAssumeRoleCredentialsProvider  stsAssumeRoleCredentialsProvider = StsAssumeRoleCredentialsProvider.builder().refreshRequest(assumeRoleRequest).build();
    return DynamoDbClient.builder().credentialsProvider(stsAssumeRoleCredentialsProvider).region(Region.EU_WEST_1)
            .build();
}

getting error

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [software.amazon.awssdk.services.dynamodb.DynamoDbClient]: Factory method 'amazonDynamoDB' threw exception; nested exception is java.lang.NullPointerException: STS client must not be null. at spring.beans@5.2.7.RELEASE/org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) at spring.beans@5.2.7.RELEASE/org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650)... 58 common frames omitted Caused by: java.lang.NullPointerException: STS client must not be null.

Answer 1

In assume role request need to set sts client & it worked

@Bean
@Primary
public DynamoDbClient amazonDynamoDB() {
    final AssumeRoleRequest assumeRoleRequest = AssumeRoleRequest.builder().roleSessionName(UUID.randomUUID().toString()).roleArn("roleArn").build();
    final StsClient stsClient = StsClient.builder().region(Region.EU_WEST_1).build();
    final StsAssumeRoleCredentialsProvider  stsAssumeRoleCredentialsProvider = StsAssumeRoleCredentialsProvider.builder().stsClient(stsClient).refreshRequest(assumeRoleRequest).build();
    return DynamoDbClient.builder().credentialsProvider(stsAssumeRoleCredentialsProvider).region(Region.EU_WEST_1)
            .build();
}