import { MessageBrokerAdapter, SagaMessage } from '../../types';
/**
 * Options for the KafkaAdapter
 */
export interface KafkaAdapterOptions {
    brokers: string[];
    clientId: string;
    groupId: string;
}
/**
 * Adapter for Kafka message broker
 * Note: This is a placeholder implementation. In a real implementation,
 * you would use a Kafka client library like 'kafkajs'.
 */
export declare class KafkaAdapter implements MessageBrokerAdapter {
    private options;
    private handlers;
    private connected;
    /**
     * Creates a new KafkaAdapter
     * @param options Kafka adapter options
     */
    constructor(options: KafkaAdapterOptions);
    /**
     * Connects to Kafka
     */
    connect(): Promise<void>;
    /**
     * Disconnects from Kafka
     */
    disconnect(): Promise<void>;
    /**
     * Publishes a message to a topic
     * @param topic Topic to publish to
     * @param message Message to publish
     */
    publish(topic: string, message: SagaMessage): Promise<void>;
    /**
     * Subscribes to a topic
     * @param topic Topic to subscribe to
     * @param handler Handler function for messages
     */
    subscribe(topic: string, handler: (message: SagaMessage) => Promise<void>): Promise<void>;
    /**
     * Unsubscribes from a topic
     * @param topic Topic to unsubscribe from
     */
    unsubscribe(topic: string): Promise<void>;
    /**
     * Ensures the adapter is connected
     */
    private ensureConnected;
}