git.r.bdr.sh - rbdr/monitorcito/blob - bin/monitorcito

   1 #!/usr/bin/env node
   2
   3 const Monitorcito = require('..');
   4 const Http = require('http');
   5 const { debuglog } = require('util');
   6
   7 const internals = {
   8
   9   kUnsetServicesError: 'Please specify comma separated services in MONITORCITO_SERVICES env variable',
  10
  11   arguments: null,
  12   log: debuglog('monitorcito'),
  13
  14   prepareArguments() {
  15
  16     internals.log('Validating arguments');
  17     if (!process.env.MONITORCITO_SERVICES) {
  18       throw new Error(internals.kUnsetServicesError);
  19     }
  20
  21     internals.arguments = process.env.MONITORCITO_SERVICES.split(',')
  22     internals.log(`Arguments are ${internals.arguments}`);
  23   },
  24
  25   startServer() {
  26
  27     internals.log('Setting up the server');
  28     const server = Http.createServer(async (request, response) => {
  29
  30       internals.log('Incoming request');
  31       const responseBody = JSON.stringify(await Monitorcito(internals.arguments));
  32       internals.log(`Responding with ${responseBody}`);
  33
  34       response.writeHead(200, { 'Content-Type': 'application/json' });
  35       response.write(responseBody);
  36       response.end();
  37     });
  38     const port = Number(process.env.MONITORCITO_PORT) || 1991;
  39     server.listen(port);
  40     internals.log(`Listening on port ${port}`);
  41   },
  42
  43   async run() {
  44
  45     internals.prepareArguments();
  46     internals.startServer();
  47   }
  48 };
  49
  50 internals.run()
  51   .catch((error) => {
  52
  53     console.error(error);
  54     process.exit(1);
  55   });