@azure/identity
Version:
Provides credential implementations for Azure SDK libraries that can authenticate with Microsoft Entra ID
33 lines • 1.39 kB
JavaScript
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
import { retryPolicy } from "@azure/core-rest-pipeline";
import { calculateRetryDelay } from "@azure/core-util";
// Matches the default retry configuration in expontentialRetryStrategy.ts
const DEFAULT_CLIENT_MAX_RETRY_INTERVAL = 1000 * 64;
/**
* An additional policy that retries on 404 errors. The default retry policy does not retry on
* 404s, but the IMDS endpoint can return 404s when the token is not yet available. This policy
* will retry on 404s with an exponential backoff.
*
* @param msiRetryConfig - The retry configuration for the MSI credential.
* @returns - The policy that will retry on 404s.
*/
export function imdsRetryPolicy(msiRetryConfig) {
return retryPolicy([
{
name: "imdsRetryPolicy",
retry: ({ retryCount, response }) => {
if ((response === null || response === void 0 ? void 0 : response.status) !== 404) {
return { skipStrategy: true };
}
return calculateRetryDelay(retryCount, {
retryDelayInMs: msiRetryConfig.startDelayInMs,
maxRetryDelayInMs: DEFAULT_CLIENT_MAX_RETRY_INTERVAL,
});
},
},
], {
maxRetries: msiRetryConfig.maxRetries,
});
}
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