hypershield
Version:
Middleware suite for high-performance and resilient APIs
64 lines • 2.87 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());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.AlertService = void 0;
const alertSender_1 = require("../infrastructure/alertSender");
const crypto_1 = require("crypto");
const constants_1 = require("../../../core/constants/constants");
class AlertService {
constructor(options) {
this.throttleMap = new Map();
this.options = Object.assign({ throttleMs: constants_1.ALERTS.THROTTLE.DEFAULT_MS, retryAttempts: constants_1.ALERTS.RETRY.DEFAULT_ATTEMPTS }, options);
}
alert(severity, message, source, metadata) {
return __awaiter(this, void 0, void 0, function* () {
const alert = {
id: (0, crypto_1.randomUUID)(),
severity,
message,
timestamp: new Date(),
source,
metadata
};
if (this.shouldThrottle(alert)) {
return;
}
const senders = this.options.destinations.map(dest => alertSender_1.AlertSenderFactory.createSender(dest));
yield Promise.all(senders.map(sender => this.sendWithRetry(sender.send.bind(sender), alert)));
});
}
shouldThrottle(alert) {
const key = `${alert.severity}:${alert.source}`;
const now = Date.now();
const lastAlert = this.throttleMap.get(key) || 0;
if (now - lastAlert < (this.options.throttleMs || 0)) {
return true;
}
this.throttleMap.set(key, now);
return false;
}
sendWithRetry(sendFn_1, alert_1) {
return __awaiter(this, arguments, void 0, function* (sendFn, alert, attempt = 1) {
try {
yield sendFn(alert);
}
catch (error) {
if (attempt < constants_1.ALERTS.RETRY.MAX_ATTEMPTS) {
yield new Promise(resolve => setTimeout(resolve, constants_1.ALERTS.RETRY.BASE_DELAY * attempt));
return this.sendWithRetry(sendFn, alert, attempt + 1);
}
throw error;
}
});
}
}
exports.AlertService = AlertService;
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