poweroff-tool/src/utils/snmp.js

This is application which power off a pc when it triggered

const snmp = require('net-snmp');

function SNMP(target, oids) {
	this.target = target;
	this.oids = oids;
  this.session = snmp.createSession(target, 'public');

  this.session.on('error', (error) => {
    console.error(error);
  })

  this.get = get.bind(this);
  return this;
};

function get(callback) {
  console.time('snmp -get');
  this.session.get(this.oids, function(error, varbinds) {
    if (error) {
      callback(error);
    } else {
      for (var i = 0; i < varbinds.length; i++) {
        if (snmp.isVarbindError(varbinds[i])) {
          callback('isVarbindError');
          return;
        } else {
          console.log(varbinds[i].oid + ' = ' + varbinds[i].value);
        }
      }
      console.timeEnd('snmp -get');
      callback(null, varbinds);
    }
  });
}

module.exports = SNMP;