@bazilio-san/af-stream/dist/esm/sender/EmitterSender.js

Data stream from database table

import AbstractSender from './AbstractSender';
class EmitterSender extends AbstractSender {
    constructor(options) {
        super(options);
        const { eventEmitter, senderConfig: { emitSingleEvent = false, emitId } } = options;
        if (!eventEmitter) {
            options.exitOnError(`Missing eventEmitter when instantiating EmitterSender class`);
        }
        if (!emitId) {
            options.exitOnError(`Missing emitId when instantiating EmitterSender class`);
        }
        this.eventEmitter = eventEmitter;
        this.emitId = String(emitId);
        this.emitSingleEvent = emitSingleEvent;
    }
    async connect() {
        this.options.echo.info(`=================== Emitter Sender is Ready ===================`);
        return true;
    }
    async sendEvents(recordsComposite) {
        const { eventsPacket } = recordsComposite;
        if (!eventsPacket.length) {
            return false;
        }
        const packet = eventsPacket.splice(0, eventsPacket.length);
        const pl = packet.length;
        recordsComposite.sentBufferLength = pl;
        recordsComposite.sendCount = pl;
        recordsComposite.last = packet[pl - 1];
        const { eventEmitter, emitId, options: { streamConfig: { streamId } } } = this;
        if (this.emitSingleEvent) {
            packet.eventsPacket.forEach((event) => {
                eventEmitter.emit(emitId, { streamId, event });
            });
        }
        else {
            eventEmitter.emit(emitId, { streamId, packet });
        }
        return true;
    }
}
export default EmitterSender;
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