https://github.com/tpkn/sava

A tiny module that lets you check whether the server is responding or not
https://github.com/tpkn/sava

Last synced: 6 days ago
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A tiny module that lets you check whether the server is responding or not

• Host: GitHub
• URL: https://github.com/tpkn/sava
• Owner: tpkn
• License: mit
• Created: 2020-01-23T22:54:39.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2020-09-07T21:07:34.000Z (over 4 years ago)
• Last Synced: 2024-04-25T06:02:53.263Z (9 months ago)
• Language: JavaScript
• Homepage:
• Size: 13.7 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Sava [![npm Package](https://img.shields.io/npm/v/sava.svg)](https://www.npmjs.org/package/sava)

A tiny module that lets you check whether the server is responding or not

## Usage

```javascript

const ServiceAvailability = require('sava');

let health = new ServiceAvailability({ 

   url: 'https://domain.com/content/ping.jpg',

   body_size: 276423,

   timeout: 30,

   interval: 60, 

   max_ping: 800,

   max_errors_streak: 10,

   messages: {

      timeout: 'Server does not respond',

      not_found: 'Wrong url',

      high_ping: 'Ping is %s ms above the maximum',

      wrong_body_size: 'Wrong response body size: %s bytes',

      init_failed: 'Initialization failed, the file is not available'

   }

})

health.on('update', (data) => {

   // => { date: "2020-01-23 22:37:15", status: "error", details: [ "404" ], ping: 2503 }

})

health.on('alarm', () => {

   console.log('!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!');

   console.log('  ALARM ALARM ALARM ALARM ALARM ALARM ALARM ALARM ALARM ALARM  ');

   console.log('!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!');

})

health.schedule();

```

If you dont't want to calculate `body_size` of your reference file, you can call `init()` method, that will do that for you:

```js

health.on('init', ({ size }) => {

   health.schedule();

   console.log('size:', size);

}); 

health.init();

```

Received `body_size` will be saved to a '.cache' file.