func ScrapeTarget(target string, config *Module) ([]gosnmp.SnmpPDU, error) {
// Set the options.
snmp := gosnmp.GoSNMP{}
snmp.Retries = 3
snmp.MaxRepetitions = 25
snmp.Timeout = time.Second * 60
snmp.Target = target
snmp.Port = 161
if host, port, err := net.SplitHostPort(target); err == nil {
snmp.Target = host
p, err := strconv.Atoi(port)
if err != nil {
return nil, fmt.Errorf("Error converting port number to int for target %s: %s", target, err)
}
snmp.Port = uint16(p)
}
// Configure auth.
config.configureSNMP(&snmp)
// Do the actual walk.
err := snmp.Connect()
if err != nil {
return nil, fmt.Errorf("Error connecting to target %s: %s", target, err)
}
defer snmp.Conn.Close()
result := []gosnmp.SnmpPDU{}
for _, subtree := range config.Walk {
var pdus []gosnmp.SnmpPDU
if snmp.Version == gosnmp.Version1 {
pdus, err = snmp.WalkAll(subtree)
} else {
pdus, err = snmp.BulkWalkAll(subtree)
}
if err != nil {
return nil, fmt.Errorf("Error walking target %s: %s", snmp.Target, err)
}
result = append(result, pdus...)
}
return result, nil
}
