vulcain-corejs/dist/pipeline/messageBus.js

Vulcain micro-service framework

"use strict";
const guid = require('node-uuid');
const annotations_1 = require("../di/annotations");
const RX = require("rx");
class MessageBus {
    constructor(manager, hasAsyncActions) {
        this.manager = manager;
        this._events = new Map();
        this.commandBus = manager.container.get(annotations_1.DefaultServiceNames.ActionBusAdapter);
        if (this.commandBus && hasAsyncActions) {
            this.commandBus.listenForTask(manager.domain.name, manager.serviceId, manager.consumeTaskAsync.bind(manager));
        }
        this.eventBus = manager.container.get(annotations_1.DefaultServiceNames.EventBusAdapter);
    }
    getEventsQueue(domain) {
        let events = this._events.get(domain);
        if (!events) {
            events = new RX.Subject();
            this._events.set(domain, events);
            this.eventBus.listenForEvent(domain, this.consumeEventAsync.bind(this));
        }
        return events;
    }
    consumeEventAsync(event) {
        this.getEventsQueue(event.domain).onNext(event);
    }
    pushTask(command) {
        command.status = "Pending";
        command.taskId = guid.v4();
        this.commandBus.publishTask(command.domain, this.manager.serviceId, command);
    }
    sendEvent(response) {
        delete response.inputSchema;
        this.eventBus.sendEvent(response.domain, response);
    }
}
exports.MessageBus = MessageBus;

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