@nestjs/microservices/client/client-proxy.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ClientProxy = void 0;
const random_string_generator_util_1 = require("@nestjs/common/utils/random-string-generator.util");
const shared_utils_1 = require("@nestjs/common/utils/shared.utils");
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
const constants_1 = require("../constants");
const incoming_response_deserializer_1 = require("../deserializers/incoming-response.deserializer");
const invalid_message_exception_1 = require("../errors/invalid-message.exception");
const identity_serializer_1 = require("../serializers/identity.serializer");
const utils_1 = require("../utils");
class ClientProxy {
    constructor() {
        this.routingMap = new Map();
    }
    send(pattern, data) {
        if (shared_utils_1.isNil(pattern) || shared_utils_1.isNil(data)) {
            return rxjs_1.throwError(new invalid_message_exception_1.InvalidMessageException());
        }
        return rxjs_1.defer(async () => this.connect()).pipe(operators_1.mergeMap(() => new rxjs_1.Observable((observer) => {
            const callback = this.createObserver(observer);
            return this.publish({ pattern, data }, callback);
        })));
    }
    emit(pattern, data) {
        if (shared_utils_1.isNil(pattern) || shared_utils_1.isNil(data)) {
            return rxjs_1.throwError(new invalid_message_exception_1.InvalidMessageException());
        }
        const source = rxjs_1.defer(async () => this.connect()).pipe(operators_1.mergeMap(() => this.dispatchEvent({ pattern, data })), operators_1.publish());
        source.connect();
        return source;
    }
    createObserver(observer) {
        return ({ err, response, isDisposed }) => {
            if (err) {
                return observer.error(this.serializeError(err));
            }
            else if (response !== undefined && isDisposed) {
                observer.next(this.serializeResponse(response));
                return observer.complete();
            }
            else if (isDisposed) {
                return observer.complete();
            }
            observer.next(this.serializeResponse(response));
        };
    }
    serializeError(err) {
        return err;
    }
    serializeResponse(response) {
        return response;
    }
    assignPacketId(packet) {
        const id = random_string_generator_util_1.randomStringGenerator();
        return Object.assign(packet, { id });
    }
    connect$(instance, errorEvent = constants_1.ERROR_EVENT, connectEvent = constants_1.CONNECT_EVENT) {
        const error$ = rxjs_1.fromEvent(instance, errorEvent).pipe(operators_1.map((err) => {
            throw err;
        }));
        const connect$ = rxjs_1.fromEvent(instance, connectEvent);
        return rxjs_1.merge(error$, connect$).pipe(operators_1.take(1));
    }
    getOptionsProp(obj, prop, defaultValue = undefined) {
        return (obj && obj[prop]) || defaultValue;
    }
    normalizePattern(pattern) {
        return utils_1.transformPatternToRoute(pattern);
    }
    initializeSerializer(options) {
        this.serializer =
            (options &&
                options.serializer) ||
                new identity_serializer_1.IdentitySerializer();
    }
    initializeDeserializer(options) {
        this.deserializer =
            (options &&
                options.deserializer) ||
                new incoming_response_deserializer_1.IncomingResponseDeserializer();
    }
}
exports.ClientProxy = ClientProxy;