botframework-connector/src/teams/retryAction.ts

Bot Connector is autorest generated connector client.

/**
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */

/**
 * Retry a given promise with gradually increasing delay when the HTTP status code received is 429(Too Many Requests).
 *
 * @param promise a function that returns a promise to retry.
 * @param maxRetries the maximum number of times to retry.
 * @param initialDelay the initial value to delay before retrying (in milliseconds).
 * @returns a promise resolving to the result of the promise from the promise generating function, or undefined.
 */
export async function retryAction<T>(
    promise: (n: number) => Promise<T>,
    maxRetries: number,
    initialDelay = 500,
): Promise<T | undefined> {
    let delay = initialDelay,
        n = 1;
    let errStatusCode: number;
    const errorsArray = [];

    // Take care of negative or zero
    maxRetries = Math.max(maxRetries, 1);

    do {
        try {
            // Note: return await intentional so we can catch errors
            return await promise(n);
        } catch (err: any) {
            errorsArray.push(err);
            errStatusCode = err.statusCode;
            if (err.statusCode == 429) {
                await new Promise((resolve) => setTimeout(resolve, delay));
                delay *= n;
                n++;
            }
        }
    } while (n <= maxRetries && errStatusCode === 429);

    throw { errors: errorsArray, message: 'Failed to perform the required operation.' };
}