SNMP MANAGER

A GoLang module to manage SNMP agents. This project provides functions that receives as parameters root OIDs or unique OIDs and returns responses in JSON format. It also provides handlers for SNMP traps and SNMP informs that receives a MQTT channel to publish the SNMP inputs in the same JSON format.

JSON format adopted:

{"<OID>":{"Value":<value>,"Type":<int>}}

Where the value for "Value" can be anything, like a string or an integer or even null, and the value for "Type" follows the SNMP RFCs:

// Asn1BER's - http://www.ietf.org/rfc/rfc1442.txt
const (
EndOfContents     Asn1BER = 0x00
UnknownType       Asn1BER = 0x00
Boolean           Asn1BER = 0x01
Integer           Asn1BER = 0x02
BitString         Asn1BER = 0x03
OctetString       Asn1BER = 0x04
Null              Asn1BER = 0x05
ObjectIdentifier  Asn1BER = 0x06
ObjectDescription Asn1BER = 0x07
IPAddress         Asn1BER = 0x40
Counter32         Asn1BER = 0x41
Gauge32           Asn1BER = 0x42
TimeTicks         Asn1BER = 0x43
Opaque            Asn1BER = 0x44
NsapAddress       Asn1BER = 0x45
Counter64         Asn1BER = 0x46
Uinteger32        Asn1BER = 0x47
OpaqueFloat       Asn1BER = 0x78
OpaqueDouble      Asn1BER = 0x79
NoSuchObject      Asn1BER = 0x80
NoSuchInstance    Asn1BER = 0x81
EndOfMibView      Asn1BER = 0x82
)

Examples

Get uniques OID by SNMPv2 :

community := "public"
host := "localhost"
port := "161"
conn := resources.ConnectionV2cFactory(host, uint16(port),community)
oids := []string{"1.3.6.1.4.1.26138.1.2.1.1.1.6.1", "1.3.6.1.4.1.26138.1.2.1.1.1.6.2"}
jsonResults := resources.DoSnmpGet(oids, conn)
fmt.Println(string(jsonResults))

Output:

 {"1.3.6.1.4.1.26138.1.2.1.1.1.6.1":{"Value":"ITBS-00000001","Type":4},"1.3.6.1.4.1.26138.1.2.1.1.1.6.2":{"Value":"ITBS-00000002","Type":4}}