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127 lines
4.1 KiB
Markdown
127 lines
4.1 KiB
Markdown
# retry-axios
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[![NPM Version][npm-image]][npm-url]
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[![CircleCI][circle-image]][circle-url]
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[![Dependency Status][david-image]][david-url]
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[![devDependency Status][david-dev-image]][david-dev-url]
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[![Known Vulnerabilities][snyk-image]][snyk-url]
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[![codecov][codecov-image]][codecov-url]
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[![Greenkeeper badge][greenkeeper-image]][greenkeeper-url]
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[![style badge][gts-image]][gts-url]
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Use Axios interceptors to automatically retry failed requests. Super flexible. Built in exponential backoff.
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## Installation
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``` sh
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npm install retry-axios
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```
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## Usage
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To use this library, import it alongside of `axios`:
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```js
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// Just import rax and your favorite version of axios
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const rax = require('retry-axios');
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const {axios} = require('axios');
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```
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You can attach to the global `axios` object, and retry 3 times by default:
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```js
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const interceptorId = rax.attach();
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const res = await axios('https://test.local');
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```
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Or you can create your own axios instance to make scoped requests:
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```js
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const myAxiosInstance = axios.create();
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myAxiosInstance.defaults = {
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raxConfig: {
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instance: myAxiosInstance
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}
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}
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const interceptorId = rax.attach(myAxiosInstance);
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const res = await myAxiosInstance.get('https://test.local');
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```
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You have a lot of options...
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```js
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const interceptorId = rax.attach();
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const res = await axios({
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url: 'https://test.local',
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raxConfig: {
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// Retry 3 times on requests that return a response (500, etc) before giving up. Defaults to 3.
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retry: 3,
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// Retry twice on errors that don't return a response (ENOTFOUND, ETIMEDOUT, etc).
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noResponseRetries: 2,
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// Milliseconds to delay at first. Defaults to 100.
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retryDelay: 100,
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// HTTP methods to automatically retry. Defaults to:
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// ['GET', 'HEAD', 'OPTIONS', 'DELETE', 'PUT']
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httpMethodsToRetry: ['GET', 'HEAD', 'OPTIONS', 'DELETE', 'PUT'],
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// The response status codes to retry. Supports a double
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// array with a list of ranges. Defaults to:
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// [[100, 199], [429, 429], [500, 599]]
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httpStatusCodesToRetry: [[100, 199], [429, 429], [500, 599]],
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// If you are using a non static instance of Axios you need
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// to pass that instance here (const ax = axios.create())
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instance: ax,
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// You can detect when a retry is happening, and figure out how many
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// retry attempts have been made
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onRetryAttempt: (err) => {
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const cfg = rax.getConfig(err);
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console.log(`Retry attempt #${cfg.currentRetryAttempt}`);
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}
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}
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});
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```
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Or if you want, you can just decide if it should retry or not:
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```js
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const res = await axios({
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url: 'https://test.local',
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raxConfig: {
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// Override the decision making process on if you should retry
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shouldRetry: (err) => {
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const cfg = rax.getConfig(err);
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return true;
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}
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}
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});
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```
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## How it works
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This library attaches an `interceptor` to an axios instance you pass to the API. This way you get to choose which version of `axios` you want to run, and you can compose many interceptors on the same request pipeline.
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## License
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[Apache-2.0](LICENSE)
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[circle-image]: https://circleci.com/gh/JustinBeckwith/retry-axios.svg?style=svg
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[circle-url]: https://circleci.com/gh/JustinBeckwith/retry-axios
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[codecov-image]: https://codecov.io/gh/JustinBeckwith/retry-axios/branch/master/graph/badge.svg
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[codecov-url]: https://codecov.io/gh/JustinBeckwith/retry-axios
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[david-image]: https://david-dm.org/JustinBeckwith/retry-axios.svg
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[david-url]: https://david-dm.org/JustinBeckwith/retry-axios
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[david-dev-image]: https://david-dm.org/JustinBeckwith/retry-axios/dev-status.svg
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[david-dev-url]: https://david-dm.org/JustinBeckwith/retry-axios?type=dev
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[greenkeeper-image]: https://badges.greenkeeper.io/JustinBeckwith/retry-axios.svg
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[greenkeeper-url]: https://greenkeeper.io/
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[gts-image]: https://img.shields.io/badge/code%20style-Google%20%E2%98%82%EF%B8%8F-blue.svg
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[gts-url]: https://www.npmjs.com/package/gts
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[npm-image]: https://img.shields.io/npm/v/retry-axios.svg
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[npm-url]: https://npmjs.org/package/retry-axios
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[snyk-image]: https://snyk.io/test/github/JustinBeckwith/retry-axios/badge.svg
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[snyk-url]: https://snyk.io/test/github/JustinBeckwith/retry-axios
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