@azure/msal-node
Version:
Microsoft Authentication Library for Node
50 lines (47 loc) • 2.33 kB
JavaScript
/*! @azure/msal-node v5.0.3 2026-01-28 */
;
import { Constants } from '@azure/msal-common/node';
import { LinearRetryStrategy } from './LinearRetryStrategy.mjs';
/*
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
const DEFAULT_MANAGED_IDENTITY_MAX_RETRIES = 3; // referenced in unit test
const DEFAULT_MANAGED_IDENTITY_RETRY_DELAY_MS = 1000;
const DEFAULT_MANAGED_IDENTITY_HTTP_STATUS_CODES_TO_RETRY_ON = [
Constants.HTTP_NOT_FOUND,
Constants.HTTP_REQUEST_TIMEOUT,
Constants.HTTP_TOO_MANY_REQUESTS,
Constants.HTTP_SERVER_ERROR,
Constants.HTTP_SERVICE_UNAVAILABLE,
Constants.HTTP_GATEWAY_TIMEOUT,
];
class DefaultManagedIdentityRetryPolicy {
constructor() {
this.linearRetryStrategy = new LinearRetryStrategy();
}
/*
* this is defined here as a static variable despite being defined as a constant outside of the
* class because it needs to be overridden in the unit tests so that the unit tests run faster
*/
static get DEFAULT_MANAGED_IDENTITY_RETRY_DELAY_MS() {
return DEFAULT_MANAGED_IDENTITY_RETRY_DELAY_MS;
}
async pauseForRetry(httpStatusCode, currentRetry, logger, retryAfterHeader) {
if (DEFAULT_MANAGED_IDENTITY_HTTP_STATUS_CODES_TO_RETRY_ON.includes(httpStatusCode) &&
currentRetry < DEFAULT_MANAGED_IDENTITY_MAX_RETRIES) {
const retryAfterDelay = this.linearRetryStrategy.calculateDelay(retryAfterHeader, DefaultManagedIdentityRetryPolicy.DEFAULT_MANAGED_IDENTITY_RETRY_DELAY_MS);
logger.verbose(`Retrying request in ${retryAfterDelay}ms (retry attempt: ${currentRetry + 1})`, "");
// pause execution for the calculated delay
await new Promise((resolve) => {
// retryAfterHeader value of 0 evaluates to false, and DEFAULT_MANAGED_IDENTITY_RETRY_DELAY_MS will be used
return setTimeout(resolve, retryAfterDelay);
});
return true;
}
// if the status code is not retriable or max retries have been reached, do not retry
return false;
}
}
export { DEFAULT_MANAGED_IDENTITY_MAX_RETRIES, DefaultManagedIdentityRetryPolicy };
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