import { CloudWatchLogsClient, OutputLogEvent, LogGroup } from '@aws-sdk/client-cloudwatch-logs';
/**
 * Interface for CloudWatch Logs service
 */
export interface CloudWatchLogsService {
    /**
     * Test connection to CloudWatch Logs
     */
    testConnection(): Promise<string>;
    /**
     * List log groups with optional filtering
     */
    listLogGroups(options?: {
        prefix?: string;
        limit?: number;
    }): Promise<LogGroup[]>;
    /**
     * Get log events from a specific log group and stream
     */
    getLogEvents(options: {
        logGroupName: string;
        logStreamName: string;
        startTime?: number;
        endTime?: number;
        limit?: number;
    }): Promise<OutputLogEvent[]>;
    /**
     * Filter log events across streams within a log group
     */
    filterLogEvents(options: {
        logGroupName: string;
        logStreamNames?: string[];
        filterPattern?: string;
        startTime?: number;
        endTime?: number;
        limit?: number;
    }): Promise<OutputLogEvent[]>;
}
/**
 * Implementation of CloudWatch Logs service
 */
export declare class CloudWatchLogsServiceImpl implements CloudWatchLogsService {
    private client;
    constructor(client?: CloudWatchLogsClient);
    /**
     * Test connection to CloudWatch Logs
     * @returns Success message with log group name if found
     */
    testConnection(): Promise<string>;
    /**
     * List log groups with optional filtering
     * @param options Filtering options
     * @returns Array of log groups
     */
    listLogGroups(options?: {
        prefix?: string;
        limit?: number;
    }): Promise<LogGroup[]>;
    /**
     * Get log events from a specific log group and stream
     * @param options Query options
     * @returns Array of log events
     */
    getLogEvents(options: {
        logGroupName: string;
        logStreamName: string;
        startTime?: number;
        endTime?: number;
        limit?: number;
    }): Promise<OutputLogEvent[]>;
    /**
     * Filter log events across streams within a log group
     * @param options Filter options
     * @returns Array of filtered log events
     */
    filterLogEvents(options: {
        logGroupName: string;
        logStreamNames?: string[];
        filterPattern?: string;
        startTime?: number;
        endTime?: number;
        limit?: number;
    }): Promise<OutputLogEvent[]>;
}
/**
 * Create a new CloudWatch Logs service instance
 * @param client Optional CloudWatch Logs client
 * @returns CloudWatch Logs service
 */
export declare function createCloudWatchLogsService(client?: CloudWatchLogsClient): CloudWatchLogsService;