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128
node_modules/gaxios/build/src/retry.js
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128
node_modules/gaxios/build/src/retry.js
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"use strict";
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// Copyright 2018, Google, LLC.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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Object.defineProperty(exports, "__esModule", { value: true });
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async function getRetryConfig(err) {
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let config = getConfig(err);
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if (!err || !err.config || (!config && !err.config.retry)) {
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return { shouldRetry: false };
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}
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config = config || {};
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config.currentRetryAttempt = config.currentRetryAttempt || 0;
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config.retry =
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config.retry === undefined || config.retry === null ? 3 : config.retry;
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config.retryDelay = config.retryDelay || 100;
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config.httpMethodsToRetry = config.httpMethodsToRetry || [
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'GET',
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'HEAD',
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'PUT',
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'OPTIONS',
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'DELETE',
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];
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config.noResponseRetries =
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config.noResponseRetries === undefined || config.noResponseRetries === null
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? 2
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: config.noResponseRetries;
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// If this wasn't in the list of status codes where we want
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// to automatically retry, return.
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const retryRanges = [
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// https://en.wikipedia.org/wiki/List_of_HTTP_status_codes
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// 1xx - Retry (Informational, request still processing)
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// 2xx - Do not retry (Success)
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// 3xx - Do not retry (Redirect)
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// 4xx - Do not retry (Client errors)
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// 429 - Retry ("Too Many Requests")
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// 5xx - Retry (Server errors)
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[100, 199],
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[429, 429],
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[500, 599],
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];
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config.statusCodesToRetry = config.statusCodesToRetry || retryRanges;
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// Put the config back into the err
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err.config.retryConfig = config;
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// Determine if we should retry the request
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const shouldRetryFn = config.shouldRetry || shouldRetryRequest;
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if (!shouldRetryFn(err)) {
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return { shouldRetry: false, config: err.config };
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}
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// Calculate time to wait with exponential backoff.
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// Formula: (2^c - 1 / 2) * 1000
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const delay = ((Math.pow(2, config.currentRetryAttempt) - 1) / 2) * 1000;
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// We're going to retry! Incremenent the counter.
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err.config.retryConfig.currentRetryAttempt += 1;
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// Create a promise that invokes the retry after the backOffDelay
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const backoff = new Promise(resolve => {
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setTimeout(resolve, delay);
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});
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// Notify the user if they added an `onRetryAttempt` handler
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if (config.onRetryAttempt) {
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config.onRetryAttempt(err);
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}
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// Return the promise in which recalls Gaxios to retry the request
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await backoff;
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return { shouldRetry: true, config: err.config };
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}
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exports.getRetryConfig = getRetryConfig;
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/**
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* Determine based on config if we should retry the request.
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* @param err The GaxiosError passed to the interceptor.
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*/
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function shouldRetryRequest(err) {
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const config = getConfig(err);
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// If there's no config, or retries are disabled, return.
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if (!config || config.retry === 0) {
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return false;
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}
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// Check if this error has no response (ETIMEDOUT, ENOTFOUND, etc)
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if (!err.response &&
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(config.currentRetryAttempt || 0) >= config.noResponseRetries) {
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return false;
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}
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// Only retry with configured HttpMethods.
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if (!err.config.method ||
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config.httpMethodsToRetry.indexOf(err.config.method.toUpperCase()) < 0) {
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return false;
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}
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// If this wasn't in the list of status codes where we want
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// to automatically retry, return.
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if (err.response && err.response.status) {
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let isInRange = false;
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for (const [min, max] of config.statusCodesToRetry) {
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const status = err.response.status;
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if (status >= min && status <= max) {
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isInRange = true;
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break;
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}
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}
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if (!isInRange) {
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return false;
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}
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}
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// If we are out of retry attempts, return
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config.currentRetryAttempt = config.currentRetryAttempt || 0;
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if (config.currentRetryAttempt >= config.retry) {
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return false;
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}
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return true;
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}
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/**
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* Acquire the raxConfig object from an GaxiosError if available.
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* @param err The Gaxios error with a config object.
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*/
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function getConfig(err) {
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if (err && err.config && err.config.retryConfig) {
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return err.config.retryConfig;
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}
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return;
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}
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//# sourceMappingURL=retry.js.map
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