@nestjs/microservices/deserializers/kafka-response.deserializer.js

Nest - modern, fast, powerful node.js web framework (@microservices)

import { KafkaHeaders } from '../enums/kafka-headers.enum.js';
import { isUndefined } from '@nestjs/common/internal';
/**
 * @publicApi
 */
export class KafkaResponseDeserializer {
    deserialize(message, options) {
        const id = message.headers[KafkaHeaders.CORRELATION_ID].toString();
        if (!isUndefined(message.headers[KafkaHeaders.NEST_ERR])) {
            return {
                id,
                err: message.headers[KafkaHeaders.NEST_ERR],
                isDisposed: true,
            };
        }
        if (!isUndefined(message.headers[KafkaHeaders.NEST_IS_DISPOSED])) {
            return {
                id,
                response: message.value,
                isDisposed: true,
            };
        }
        return {
            id,
            response: message.value,
            isDisposed: false,
        };
    }
}