import * as lambda from 'aws-cdk-lib/aws-lambda';
import * as lambdaEventSource from 'aws-cdk-lib/aws-lambda-event-sources';
import * as secretsmanager from 'aws-cdk-lib/aws-secretsmanager';
/**
 * Properties for RioKafkaEventSource
 */
export interface RioKafkaEventSourceProps extends lambdaEventSource.BaseStreamEventSourceProps {
    /**
     * The Kafka topic to subscribe to
     */
    readonly topic: string;
    /**
     * The secret with the Kafka credentials, see https://docs.aws.amazon.com/msk/latest/developerguide/msk-authentication.html for details.
     *
     * You can use the `create-and-sign-certificate` script from the `kafka-integration` to create a suitable AWS Secrets Manager secret.
     * Simply add the `--fqdn <fqdn> --lambda` parameters to the `create-and-sign-certificate` script and the script generates a secret named `kafka-integration/msk-certificate/<fqdn>` with all relevant data.
     *
     * Please note that we do only support the `--lambda` parameter if the `--fqdn` parameter is present.
     * We encourage you to use the `--fqdn` parameter for all your Kafka consumers and producers as this eases the recovery process in the case of a disaster.
     * (Otherwise, i.e., if you do not use the `--fqdn` parameter, your certificates CNAME contains the AWS account ID and you need to change all ACLs in case of a corrupted AWS account.)
     */
    readonly secret: secretsmanager.ISecret;
    /**
     * The identifier for the Kafka consumer group to join.
     * The consumer group ID must be unique among all your Kafka event sources.
     * After creating a Kafka event source mapping with the consumer group ID specified, you cannot update this value.
     * The value must have a lenght between 1 and 200 and full the pattern '[a-zA-Z0-9-\/*:_+=.\@-]*'.
     * @see https://docs.aws.amazon.com/lambda/latest/dg/with-msk.html#services-msk-consumer-group-id
     *
     * @defaultValue - none
     */
    readonly consumerGroupId?: string;
}
/**
 * Use the Rio Kafka as a streaming source for AWS Lambda.
 *
 * ```
 *  const lambda = new nodejs.NodejsFunction(this, 'KafkaConsumerFunction', {
 *     entry: 'path.to.handler.ts',
 *     handler: 'handlerName',
 *   });
 *
 *   const secret = Secret.fromSecretNameV2(this, 'ConsumerSecret', 'kafka-integration/msk-certificate/<FQDN>')
 *
 *   lambda.addEventSource(new RioKafkaEventSource({
 *     secret,
 *     topic: '<TOPIC/NAME>',
 *     startingPosition: StartingPosition.TRIM_HORIZON,
 *   }));
 * ```
 */
export declare class RioKafkaEventSource implements lambda.IEventSource {
    private props;
    constructor(props: RioKafkaEventSourceProps);
    bind(target: lambda.IFunction): void;
}