使用获取有关 Amazon Keyspaces 密钥空间的数据AmazonSDK

    /// <summary>
    /// Get data about a keyspace.
    /// </summary>
    /// <param name="keyspaceName">The name of the keyspace.</param>
    /// <returns>The Amazon Resource Name (ARN) of the keyspace.</returns>
    public async Task<string> GetKeyspace(string keyspaceName)
    {
        var response = await _amazonKeyspaces.GetKeyspaceAsync(
            new GetKeyspaceRequest { KeyspaceName = keyspaceName });
        return response.ResourceArn;
    }

    public static void checkKeyspaceExistence(KeyspacesClient keyClient, String keyspaceName) {
        try {
            GetKeyspaceRequest keyspaceRequest = GetKeyspaceRequest.builder()
                .keyspaceName(keyspaceName)
                .build();

            GetKeyspaceResponse response = keyClient.getKeyspace(keyspaceRequest);
            String name = response.keyspaceName();
            System.out.println("The "+ name+ " KeySpace is ready");

        } catch (KeyspacesException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

suspend fun checkKeyspaceExistence(keyspaceNameVal: String?) {
    val keyspaceRequest = GetKeyspaceRequest {
        keyspaceName = keyspaceNameVal
    }
    KeyspacesClient { region = "us-east-1" }.use { keyClient ->
        val response: GetKeyspaceResponse = keyClient.getKeyspace(keyspaceRequest)
        val name = response.keyspaceName
        println("The $name KeySpace is ready")
    }
}

class KeyspaceWrapper:
    """Encapsulates Amazon Keyspaces (for Apache Cassandra) keyspace and table actions."""
    def __init__(self, keyspaces_client):
        """
        :param keyspaces_client: A Boto3 Amazon Keyspaces client.
        """
        self.keyspaces_client = keyspaces_client
        self.ks_name = None
        self.ks_arn = None
        self.table_name = None

    @classmethod
    def from_client(cls):
        keyspaces_client = boto3.client('keyspaces')
        return cls(keyspaces_client)

    def exists_keyspace(self, name):
        """
        Checks whether a keyspace exists.

        :param name: The name of the keyspace to look up.
        :return: True when the keyspace exists. Otherwise, False.
        """
        try:
            response = self.keyspaces_client.get_keyspace(keyspaceName=name)
            self.ks_name = response['keyspaceName']
            self.ks_arn = response['resourceArn']
            exists = True
        except ClientError as err:
            if err.response['Error']['Code'] == 'ResourceNotFoundException':
                logger.info("Keyspace %s does not exist.", name)
                exists = False
            else:
                logger.error(
                    "Couldn't verify %s exists. Here's why: %s: %s", name,
                    err.response['Error']['Code'], err.response['Error']['Message'])
                raise
        return exists