| System: Linux srv913213 5.15.0-190-generic #200-Ubuntu SMP Fri Aug 7 15:06:04 UTC 2026 x86_64 Current Path : /var/www/talentgenesis_admin_backend/node_modules/@nestjs/microservices/client/ |
| Current File : /var/www/talentgenesis_admin_backend/node_modules/@nestjs/microservices/client/client-mqtt.js |
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ClientMqtt = void 0;
const logger_service_1 = require("@nestjs/common/services/logger.service");
const load_package_util_1 = require("@nestjs/common/utils/load-package.util");
const rxjs_1 = require("rxjs");
const operators_1 = require("rxjs/operators");
const constants_1 = require("../constants");
const mqtt_record_serializer_1 = require("../serializers/mqtt-record.serializer");
const client_proxy_1 = require("./client-proxy");
let mqttPackage = {};
/**
* @publicApi
*/
class ClientMqtt extends client_proxy_1.ClientProxy {
constructor(options) {
super();
this.options = options;
this.logger = new logger_service_1.Logger(client_proxy_1.ClientProxy.name);
this.subscriptionsCount = new Map();
this.url = this.getOptionsProp(this.options, 'url') || constants_1.MQTT_DEFAULT_URL;
mqttPackage = (0, load_package_util_1.loadPackage)('mqtt', ClientMqtt.name, () => require('mqtt'));
this.initializeSerializer(options);
this.initializeDeserializer(options);
}
getRequestPattern(pattern) {
return pattern;
}
getResponsePattern(pattern) {
return `${pattern}/reply`;
}
close() {
this.mqttClient && this.mqttClient.end();
this.mqttClient = null;
this.connection = null;
}
connect() {
if (this.mqttClient) {
return this.connection;
}
this.mqttClient = this.createClient();
this.handleError(this.mqttClient);
const connect$ = this.connect$(this.mqttClient);
this.connection = (0, rxjs_1.lastValueFrom)(this.mergeCloseEvent(this.mqttClient, connect$).pipe((0, operators_1.tap)(() => this.mqttClient.on(constants_1.MESSAGE_EVENT, this.createResponseCallback())), (0, operators_1.share)())).catch(err => {
if (err instanceof rxjs_1.EmptyError) {
return;
}
throw err;
});
return this.connection;
}
mergeCloseEvent(instance, source$) {
const close$ = (0, rxjs_1.fromEvent)(instance, constants_1.CLOSE_EVENT).pipe((0, operators_1.map)((err) => {
throw err;
}));
return (0, rxjs_1.merge)(source$, close$).pipe((0, operators_1.first)());
}
createClient() {
return mqttPackage.connect(this.url, this.options);
}
handleError(client) {
client.addListener(constants_1.ERROR_EVENT, (err) => err.code !== constants_1.ECONNREFUSED && this.logger.error(err));
}
createResponseCallback() {
return async (channel, buffer) => {
const packet = JSON.parse(buffer.toString());
const { err, response, isDisposed, id } = await this.deserializer.deserialize(packet);
const callback = this.routingMap.get(id);
if (!callback) {
return undefined;
}
if (isDisposed || err) {
return callback({
err,
response,
isDisposed: true,
});
}
callback({
err,
response,
});
};
}
publish(partialPacket, callback) {
try {
const packet = this.assignPacketId(partialPacket);
const pattern = this.normalizePattern(partialPacket.pattern);
const serializedPacket = this.serializer.serialize(packet);
const responseChannel = this.getResponsePattern(pattern);
let subscriptionsCount = this.subscriptionsCount.get(responseChannel) || 0;
const publishPacket = () => {
subscriptionsCount = this.subscriptionsCount.get(responseChannel) || 0;
this.subscriptionsCount.set(responseChannel, subscriptionsCount + 1);
this.routingMap.set(packet.id, callback);
const options = serializedPacket.options;
delete serializedPacket.options;
this.mqttClient.publish(this.getRequestPattern(pattern), JSON.stringify(serializedPacket), this.mergePacketOptions(options));
};
if (subscriptionsCount <= 0) {
this.mqttClient.subscribe(responseChannel, (err) => !err && publishPacket());
}
else {
publishPacket();
}
return () => {
this.unsubscribeFromChannel(responseChannel);
this.routingMap.delete(packet.id);
};
}
catch (err) {
callback({ err });
}
}
dispatchEvent(packet) {
const pattern = this.normalizePattern(packet.pattern);
const serializedPacket = this.serializer.serialize(packet);
const options = serializedPacket.options;
delete serializedPacket.options;
return new Promise((resolve, reject) => this.mqttClient.publish(pattern, JSON.stringify(serializedPacket), this.mergePacketOptions(options), (err) => (err ? reject(err) : resolve())));
}
unsubscribeFromChannel(channel) {
const subscriptionCount = this.subscriptionsCount.get(channel);
this.subscriptionsCount.set(channel, subscriptionCount - 1);
if (subscriptionCount - 1 <= 0) {
this.mqttClient.unsubscribe(channel);
}
}
initializeSerializer(options) {
this.serializer = options?.serializer ?? new mqtt_record_serializer_1.MqttRecordSerializer();
}
mergePacketOptions(requestOptions) {
if (!requestOptions && !this.options?.userProperties) {
return undefined;
}
return {
...requestOptions,
properties: {
...requestOptions?.properties,
userProperties: {
...this.options?.userProperties,
...requestOptions?.properties?.userProperties,
},
},
};
}
}
exports.ClientMqtt = ClientMqtt;