signalk-parquet/dist/streaming-service.d.ts

SignalK plugin to save marine data directly to Parquet files with regimen-based control

import { Server as HttpServer } from 'http';
import { HistoryAPI } from './HistoryAPI';
export interface StreamingServiceOptions {
    historyAPI: HistoryAPI;
    selfId: string;
    debug?: boolean;
}
export interface StreamSubscription {
    id: string;
    path: string;
    timeWindow: string;
    aggregates: string[];
    refreshInterval: number;
    timer?: NodeJS.Timeout;
}
export declare class StreamingService {
    private wss;
    private historyAPI;
    private selfId;
    private debug;
    private activeSubscriptions;
    private connectedClients;
    constructor(httpServer: HttpServer, options: StreamingServiceOptions);
    private setupEventHandlers;
    private handleMessage;
    private handleSubscribe;
    private handleUnsubscribe;
    private startStreaming;
    private stopStreaming;
    private calculateTimeWindow;
    broadcast(data: any): void;
    getStats(): {
        connectedClients: number;
        activeSubscriptions: number;
    };
    shutdown(): void;
    private log;
}
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