@truffle/dashboard-message-bus-client
Version:
Client library for accessing the truffle dashboard's message bus
62 lines • 2.79 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ReceivedMessageLifecycle = exports.DashboardMessageBusSubscription = void 0;
const errors_1 = require("../errors");
const debug_1 = __importDefault(require("debug"));
const tiny_typed_emitter_1 = require("tiny-typed-emitter");
const debug = (0, debug_1.default)(`dashboard-message-bus-client:subscribe`);
class DashboardMessageBusSubscription extends tiny_typed_emitter_1.TypedEmitter {
constructor({ id, type }) {
super();
this._ended = false;
this._predicate = (message) => (id === undefined || message.id === id) &&
(type === undefined || message.type === type);
}
_evaluateMessage({ message, connection }) {
if (this._predicate(message)) {
const messageLifecycle = new ReceivedMessageLifecycle({
message,
connection
});
this.emit("message", messageLifecycle);
}
}
_end() {
this._ended = true;
this.emit("end");
this.removeAllListeners();
}
}
exports.DashboardMessageBusSubscription = DashboardMessageBusSubscription;
class ReceivedMessageLifecycle {
constructor({ message, connection }) {
this._responded = false;
this.message = message;
this._connection = connection;
}
respond({ payload }) {
return __awaiter(this, void 0, void 0, function* () {
if (this._responded) {
throw new errors_1.AlreadyRespondedError({ serviceBusMessage: this.message });
}
this._responded = true;
const response = { id: this.message.id, payload };
debug("Responding to message %s of type '%s' with %o", this.message.id, this.message.type, response);
yield this._connection.send(response);
});
}
}
exports.ReceivedMessageLifecycle = ReceivedMessageLifecycle;
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