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SNMPFunctions.js
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SNMPFunctions.js
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const firebase = require("firebase");
var snmp = require("net-snmp");
const notification = require("./Notofication");
const notify = new notification();
class SNMPFunctions {
constructor() {
this.db = firebase.firestore();
}
registerActivity(serverid, oidname, value, refvalue, alert) {
this.db
.collection("Servidores")
.doc(serverid)
.collection("Registros")
.add({
value: `${value}`,
refvalue: `${refvalue}`,
oidName: oidname,
date: firebase.firestore.Timestamp.fromDate(new Date()),
alert: alert
})
.catch(error => {
throw error;
});
}
registerActivitySimple(serverid, oidname, value) {
this.db
.collection("Servidores")
.doc(serverid)
.collection("Registros")
.add({
value: `${value}`,
oidName: oidname,
date: firebase.firestore.Timestamp.fromDate(new Date())
})
.catch(error => {
throw error;
});
}
registerActivityOnce(serverid, oidname, value) {
this.db
.collection("Servidores")
.doc(serverid)
.update({
[oidname]: `${value}`
})
.catch(error => {
throw error;
});
}
async Monitorear(ip, comunidad, oids, serverid, oidname, unused) {
var session = snmp.createSession(ip, comunidad);
var binds = [];
var bigError;
var value;
let promise = new Promise((resolve, reject) => {
session.get(oids, function(error, varbinds) {
if (error) bigError = error;
else
for (var i = 0; i < varbinds.length; i++)
if (snmp.isVarbindError(varbinds[i]))
bigError = snmp.varbindError(varbinds[i]);
else binds.push(varbinds[i]);
resolve("ok");
// If done, close the session
session.close();
});
}).catch(error => {
bigError = error;
});
let result = await promise;
if (bigError) {
notify.sendNotification(
"facebook",
"El servidor " + ip,
" con comunidad " + comunidad + " sufre de ",
bigError
);
throw new Error(bigError);
} else {
binds = binds[0].oid == oids[0] ? binds : binds.reverse();
var value =
unused == true ? binds[1].value - binds[0].value : binds[0].value;
var alert;
try {
alert = value / binds[1].value > 0.8 ? true : false;
} catch {
alert = false;
}
this.registerActivity(serverid, oidname, value, binds[1].value, alert);
}
}
async MonitorSimple(ip, comunidad, oids, serverid, oidname) {
var session = snmp.createSession(ip, comunidad);
var binds = [];
var bigError;
let promise = new Promise((resolve, reject) => {
session.get(oids, function(error, varbinds) {
if (error) bigError = error;
else
for (var i = 0; i < varbinds.length; i++)
if (snmp.isVarbindError(varbinds[i]))
bigError = snmp.varbindError(varbinds[i]);
else binds.push(varbinds[i]);
resolve("ok");
// If done, close the session
session.close();
});
}).catch(error => {
bigError = error;
});
let result = await promise;
if (bigError) {
notify.sendNotification(
"facebook",
"El servidor " + ip,
" con comunidad " + comunidad + " sufre de ",
bigError
);
throw new Error(bigError);
} else {
this.registerActivitySimple(serverid, oidname, binds[0].value);
}
}
async MonitorOnce(ip, comunidad, oids, serverid, oidname) {
var session = snmp.createSession(ip, comunidad);
var binds = [];
var bigError;
let promise = new Promise((resolve, reject) => {
session.get(oids, function(error, varbinds) {
if (error) bigError = error;
else
for (var i = 0; i < varbinds.length; i++)
if (snmp.isVarbindError(varbinds[i]))
bigError = snmp.varbindError(varbinds[i]);
else binds.push(varbinds[i]);
resolve("ok");
// If done, close the session
session.close();
});
}).catch(error => {
bigError = error;
});
let result = await promise;
if (bigError) {
notify.sendNotification(
"facebook",
"El servidor " + ip,
" con comunidad " + comunidad + " sufre de ",
bigError
);
throw new Error(bigError);
} else {
this.registerActivityOnce(serverid, oidname, binds[0].value);
}
}
}
module.exports = SNMPFunctions;