acelga-bus
Version:
An extensible typescript message bus with support for middlewares
50 lines • 2.02 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const middlewareChain_1 = require("./middlewareChain");
class Publisher {
constructor(handler) {
this.middlewareChain = new middlewareChain_1.MiddlewareChain();
this.listeners = new Set();
this.handler = handler;
}
publish(item) {
return __awaiter(this, void 0, void 0, function* () {
const result = yield this.middlewareChain.execute(item);
if (!result)
return;
return this.handler(result, item);
});
}
cleanMiddlewares() {
this.middlewareChain = new middlewareChain_1.MiddlewareChain();
}
clone() {
const publisher = new Publisher(this.handler);
for (const middleware of this.middlewareChain.getAll()) {
publisher.pushMiddleware(middleware);
}
return publisher;
}
pushMiddleware(middleware) {
this.middlewareChain.push(middleware);
}
unshiftMiddleware(middleware) {
this.middlewareChain.unshift(middleware);
}
pushMiddlewareAndKeepLast(middleware, force) {
this.middlewareChain.pushAndKeepLast(middleware, force);
}
unshiftMiddlewareAndKeepFirst(middleware, force) {
this.middlewareChain.unshiftAndKeepFirst(middleware, force);
}
}
exports.Publisher = Publisher;
//# sourceMappingURL=publisher.js.map