fvdm/nodejs-vnstat-dumpdb

Node.js wrapper for vnStat --dumpdb, with error handling and the same output structure on each system

vnstat-dumpdb

Get network traffic statistics from vnStat.

Example

var vnstat = require ('vnstat-dumpdb') ();

// Get traffic per day
vnstat.getStats ('eth0', function (err, data) {
  if (err) {
    console.log (err);
    return;
  }

  console.log (data.traffic.days);
});

// Read config setting
vnstat.getConfig (function (err, config) {
  if (err) {
    console.log (err);
    return;
  }

  console.log ('Interfaces updating every ' + config.UpdateInterval + ' minutes');
});

Installation

Make sure you have vnStat v1.13 or later.

npm install vnstat-dumpdb

Configuration

The module loads as a function to override the defaults:

setting	type	required	default	description
bin	string	no	vnstat	Path to vnstat binary
iface	string	no		i.e. eth0 or false to list all

Callback & errors

Each method below takes a callback function which gets two arguments:

• err - Instance of Error or null
• data - Result object or not set when error

function myCallback (err, data) {
  if (err) {
    console.log (err);
    console.log (err.stack);
    return;
  }

  console.log (data);
}

Errors

message	description	additional
no config	Can't load config for getConfig	err.details, err.error
invalid data	Can't read stats for getStats	err.details
invalid interface	iface is invalid or not set up

getStats ( [iface], callback )

Get statistics for one, multiple or all interfaces.

• One: vnstat.getStats ('eth0', callback)
• All: vnstat.getStats (false, callback)

// Get traffic for interface en1
vnstat.getStats ('en1', console.log);

// Output
{ id: 'en1',
  nick: 'en1',
  created: { date: { year: 2012, month: 11, day: 21 } },
  updated:
   { date: { year: 2013, month: 10, day: 28 },
     time: { hour: 3, minute: 25 } },
  traffic:
   { total: { rx: 593576855, tx: 63746811 },
     days:
      [ { id: 0,
          date: { year: 2013, month: 10, day: 28 },
          rx: 4083261,
          tx: 119674 },
        { id: 1,
          date: { year: 2013, month: 10, day: 27 },
          rx: 2206367,
          tx: 52314 },
        ...
      ],
     months:
      [ { id: 0,
          date: { year: 2013, month: 10 },
          rx: 158176326,
          tx: 7740561 },
        { id: 1,
          date: { year: 2013, month: 9 },
          rx: 119230002,
          tx: 3394278 },
        ...
      ],
     tops:
      [ { id: 0,
          date: { year: 2013, month: 10, day: 5 },
          time: { hour: 0, minute: 10 },
          rx: 22445455,
          tx: 601967 },
        { id: 1,
          date: { year: 2013, month: 9, day: 23 },
          time: { hour: 0, minute: 0 },
          rx: 20201102,
          tx: 461492 },
        ...
      ],
      hours: []
  }
}

getConfig ( callback )

Get vnStat configuration.

vnstat.getConfig (function (err, config) {
  if (err) {
    console.log (err);
    return;
  }

  console.log ('Interfaces updating every ' + config.UpdateInterval + ' seconds');
});

Unlicense

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to http://unlicense.org

Author

Franklin van de Meent