@kuflow/kuflow-temporal-worker
Version:
Worker library used by KuFlow SDKs and Temporal.
94 lines • 4.4 kB
JavaScript
;
/**
* The MIT License
* Copyright © 2021-present KuFlow S.L.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.KuFlowAuthorizationTokenProvider = void 0;
const worker_1 = require("@temporalio/worker");
const NOOP = () => { }; // eslint-disable-line @typescript-eslint/no-empty-function
class KuFlowAuthorizationTokenProvider {
temporalConnection;
options;
backoff;
consecutiveFailures = 0;
refreshTimeout;
static instance(params) {
const kuFlowTemporalConnection = new KuFlowAuthorizationTokenProvider(params.temporalConnection, params.options);
kuFlowTemporalConnection.scheduleAuthorizationTokenRenovation();
return kuFlowTemporalConnection;
}
constructor(temporalConnection, options) {
this.temporalConnection = temporalConnection;
this.options = options;
const backoff = options.kuflow.authorizationTokenProviderBackoff;
this.backoff = {
sleep: backoff?.sleep ?? 1_000,
maxSleep: backoff?.maxSleep ?? 5 * 60 * 1_000,
exponentialRate: backoff?.exponentialRate ?? 2.5,
};
}
async close() {
this.refreshTimeout != null && clearTimeout(this.refreshTimeout);
this.refreshTimeout = undefined;
}
scheduleAuthorizationTokenRenovation(refreshInMs) {
refreshInMs = refreshInMs ?? 0;
this.refreshTimeout = setTimeout(() => {
this.refreshAuthorizationTokenRenovation().then(NOOP).catch(NOOP);
}, refreshInMs);
}
async refreshAuthorizationTokenRenovation() {
try {
const authentication = await this.createAuthentication();
this.consecutiveFailures = 0;
const engineToken = authentication.engineToken;
if (engineToken?.token != null) {
await this.temporalConnection.setMetadata({
authorization: `Bearer ${engineToken?.token}`,
});
}
const expiredAtDate = engineToken?.expiredAt != null ? new Date(engineToken.expiredAt) : undefined;
const refreshInMs = expiredAtDate == null ? 0 : (expiredAtDate.getTime() - new Date().getTime()) / 2;
this.scheduleAuthorizationTokenRenovation(refreshInMs);
}
catch (error) {
this.consecutiveFailures++;
const retryDurationMs = Math.round(this.backoff.sleep * Math.pow(this.backoff.exponentialRate, this.consecutiveFailures));
const refreshInMs = Math.min(retryDurationMs, this.backoff.maxSleep);
this.scheduleAuthorizationTokenRenovation(refreshInMs);
worker_1.Runtime.instance().logger.error('Error requesting authorization token', {
consecutiveFailures: this.consecutiveFailures,
refreshInMs,
error,
});
}
}
async createAuthentication() {
const authenticationParams = {
type: 'ENGINE_TOKEN',
tenantId: this.options.kuflow.tenantId,
};
return await this.options.kuflow.restClient.authenticationOperations.createAuthentication(authenticationParams);
}
}
exports.KuFlowAuthorizationTokenProvider = KuFlowAuthorizationTokenProvider;
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