frontend/src/utils/fetchWithRetry.js

/*
# Copyright 2025 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
*/

export const fetchWithRetry = async (url, options, retries = 2, backoff = [5000, 15000]) => {
    for(let attempt = 0; attempt <= retries; attempt++){
        try {
            const response = await fetch(url, options);
            if (response.ok) {
                return response;
            }
            throw new Error(`API request failed with status ${response.status}`);
        } catch (error) {
            if (attempt === retries) {
                console.error(`All retry attempts failed for ${url}.`);
                throw error;
            }
            const delay = backoff[attempt];
            console.log(`Attempt ${attempt + 1} failed. Retrying in ${delay / 1000}s...`);
            await new Promise(resolve => setTimeout(resolve, delay));
        }
    }
};