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https://github.com/dnlup/fastify-traps
A fastify plugin to close the server gracefully on SIGINT and SIGTERM signals
https://github.com/dnlup/fastify-traps
Last synced: about 2 months ago
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A fastify plugin to close the server gracefully on SIGINT and SIGTERM signals
- Host: GitHub
- URL: https://github.com/dnlup/fastify-traps
- Owner: dnlup
- License: isc
- Created: 2020-08-13T10:46:11.000Z (about 4 years ago)
- Default Branch: next
- Last Pushed: 2024-04-10T01:09:19.000Z (6 months ago)
- Last Synced: 2024-07-19T10:47:52.038Z (2 months ago)
- Language: JavaScript
- Homepage:
- Size: 301 KB
- Stars: 27
- Watchers: 3
- Forks: 4
- Open Issues: 7
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
README
# fastify-traps
[](https://badge.fury.io/js/%40dnlup%2Ffastify-traps)
[](https://codecov.io/gh/dnlup/fastify-traps)
[](https://snyk.io/test/github/dnlup/fastify-traps?targetFile=package.json)
> A fastify plugin to close the server gracefully on SIGINT and SIGTERM signals.
- [Install](#install)
- [Usage](#usage)
+ [Default](#default)
+ [Custom close timeout](#custom-close-timeout)
+ [Custom hooks](#custom-hooks)
* [Plugin options](#plugin-options)
+ [onSignal(signal)](#onsignalsignal)
+ [onClose()](#onclose)
+ [onTimeout(timeout)](#ontimeouttimeout)
+ [onError(error)](#onerrorerror)
- [License](#license)
## Install
```bash
$ npm i @dnlup/fastify-traps
```
If you are using fastify 3, use the version `1` of the plugin:
```bash
$ npm i @dnlup/fastify-traps@1
```
## Usage
#### Default
```js
const fastify = require('fastify')()
const traps = require('@dnlup/fastify-traps')
fastify.register(traps)
fastify.get('/', (request, reply) => {
reply.send({ ok: true })
})
fastify.listen(3000)
```
The plugin will use the instance logger to print out some pieces of information like the signal received
and if it could close the fastify instance successfully.
#### Custom close timeout
By default, the plugin will wait 30 seconds for the server to close. After that, it will exit the process with code `1`.
You can change the value of the timeout.
```js
const fastify = require('fastify')()
const traps = require('@dnlup/fastify-traps')
fastify.register(traps, {
timeout: 1000 // wait 1 second before forcing exiting
})
fastify.listen(3000)
```
#### Custom hooks
The plugin allows registering custom, synchronous functions to override the default hooks.
The context of a hook is bound to the `fastify` instance, so you can use `this` to refer to it.
```js
const fastify = require('fastify')()
const traps = require('@dnlup/fastify-traps')
fastify.register(traps, {
onSignal(signal) {
this.log.debug(`Received signal ${signal}`)
},
onClose() {
this.log.info('Server closed')
},
onTimeout(timeout) {
this.log.error(`Forcing close after ${timeout} ms`)
},
onError(error) {
this.log.error(`Uh oh: ${error.message}`)
}
})
fastify.listen(3000)
```
### Plugin options
* `timeout` ``: number of milliseconds to wait for the server to close
* `onSignal` ``: on signal custom [hook](#onsignal)
* `onClose` ``: on signal custom [hook](#onclose)
* `onTimeout` ``: on signal custom [hook](#ontimeout)
* `onError` ``: on signal custom [hook](#onerror)
* `strict` ``: error if a `SIGINT` or `SIGTERM` handler is already registered. **Default:** `true`.
As said previously, the hooks' context is bound to the `fastify` instance, so you can use `this` to refer to it.
#### onSignal(signal)
* `signal` ``: the signal received
The plugin will call this hook when it received a `SIGINT` or `SIGTERM` signal.
#### onClose()
The plugin will call this hook when the server is closed.
#### onTimeout(timeout)
* `timeout` ``: the number of milliseconds of the timeout
The plugin will call this hook when the timeout for waiting for the server to close has expired.
#### onError(error)
* `error` ``: the error that occurred while closing the server
The plugin will call this hook when there is an error when closing the server.
## License
[ISC](./LICENSE)