import { TGetResultSetMetadataResp, TRowSet } from '../../thrift/TCLIService_types';
import IClientContext from '../contracts/IClientContext';
import IResultsProvider, { ResultsProviderFetchNextOptions } from './IResultsProvider';
import { ArrowBatch } from './utils';
export default class CloudFetchResultHandler implements IResultsProvider<ArrowBatch> {
    private readonly context;
    private readonly source;
    private readonly isLZ4Compressed;
    private readonly statementId?;
    private pendingLinks;
    private downloadTasks;
    private chunkIndex;
    constructor(context: IClientContext, source: IResultsProvider<TRowSet | undefined>, metadata: TGetResultSetMetadataResp, statementId?: string);
    hasMore(): Promise<boolean>;
    fetchNext(options: ResultsProviderFetchNextOptions): Promise<ArrowBatch>;
    private logDownloadMetrics;
    private downloadLink;
    private fetch;
    /**
     * Emit cloudfetch.chunk telemetry event.
     * CRITICAL: All exceptions swallowed and logged at LogLevel.debug ONLY.
     */
    private emitCloudFetchChunk;
}