snmp-factory

A very simple snmp connection pool manager

The purpose of this module is to reuse existing connections to a particular device.

Open a new connection whenever you intend to communicate with a device is costly and causes slowness in aplications and prevent nodejs exceed their limetes.

Usage

    var snmpFactory = require("snmp-factory");
 
    var snmpSessionOptions = {
        ip: "127.0.0.1",
        community: "private",
        options: {
            port: 161,
            retries: 1,
            timeout: 500,
            transport: "udp4",
            version: 1
        }
    };
 
    snmpFactory.getConnection(snmpSessionOptions).then(function(connection) {
 
        var oids = ["1.3.6.1.2.1.1.5.0", "1.3.6.1.2.1.1.6.0"];
 
        connection.get(oids, function(error, varbinds) {
 
            if (error) {
 
                console.error(error);
 
            } else {
 
                for (var i = 0; i < varbinds.length; i++) {
 
                    if (snmpFactory.isVarbindError(varbinds[i])) {
 
                        console.error(snmpFactory.varbindError(varbinds[i]));
 
                    } else {
 
                        console.log(varbinds[i].oid + " = " + varbinds[i].value);
 
                    }
 
                }
 
            }
 
        });
 
    }).catch(function(error) {
 
        console.error(error);
 
    });

API

getConnection(snmpSessionOptions)

The only parameter is a connection object for a snmp connection.

isVarbindError

Exposes the net-snmp isVarbindError function.

varbindError

Exposes the net-snmp varbindError function.