theater/tendrils
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remove unused snmp queries

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remove queryARPTable (returns no data) and switch directly to q-bridge-mib (bridge-mib returns no data).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Ian Gulliver
2025-11-29 22:19:05 -08:00
parent 75bbf4b0a4
commit ebfe18f84c
1 changed files with 1 additions and 114 deletions
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115
snmp.go
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@@ -114,26 +114,10 @@ func (t *Tendrils) querySNMPDevice(ip net.IP) {
defer snmp.Conn.Close()
t.queryBridgeMIB(snmp, ip)
t.queryARPTable(snmp, ip)
}
func (t *Tendrils) queryBridgeMIB(snmp *gosnmp.GoSNMP, deviceIP net.IP) {
macOID := "1.3.6.1.2.1.17.4.3.1.1"
portOID := "1.3.6.1.2.1.17.4.3.1.2"
macResults, err := snmp.BulkWalkAll(macOID)
if err != nil {
return
}
if len(macResults) == 0 {
macOID = "1.3.6.1.2.1.17.7.1.2.2.1.1"
portOID = "1.3.6.1.2.1.17.7.1.2.2.1.2"
macResults, err = snmp.BulkWalkAll(macOID)
if err != nil {
return
}
}
portOID := "1.3.6.1.2.1.17.7.1.2.2.1.2"
portResults, err := snmp.BulkWalkAll(portOID)
if err != nil {
@@ -236,103 +220,6 @@ func (t *Tendrils) queryBridgeMIB(snmp *gosnmp.GoSNMP, deviceIP net.IP) {
}
}
func (t *Tendrils) queryARPTable(snmp *gosnmp.GoSNMP, deviceIP net.IP) {
macOID := "1.3.6.1.2.1.4.22.1.2"
ipOID := "1.3.6.1.2.1.4.22.1.3"
ifIndexOID := "1.3.6.1.2.1.4.22.1.1"
macResults, err := snmp.BulkWalkAll(macOID)
if err != nil {
return
}
ipResults, err := snmp.BulkWalkAll(ipOID)
if err != nil {
return
}
ifIndexResults, err := snmp.BulkWalkAll(ifIndexOID)
if err != nil {
return
}
ipMap := make(map[string]net.IP)
for _, result := range ipResults {
if result.Type == gosnmp.IPAddress {
oidSuffix := result.Name[len(ipOID)+1:]
ipBytes := result.Value.([]byte)
ipMap[oidSuffix] = net.IP(ipBytes)
}
}
ifIndexMap := make(map[string]int)
for _, result := range ifIndexResults {
if result.Type == gosnmp.Integer {
oidSuffix := result.Name[len(ifIndexOID)+1:]
ifIndexMap[oidSuffix] = result.Value.(int)
}
}
ifNames := t.getInterfaceNames(snmp)
for _, result := range macResults {
if result.Type == gosnmp.OctetString {
macBytes := result.Value.([]byte)
if len(macBytes) != 6 {
continue
}
mac := net.HardwareAddr(macBytes)
if isBroadcastOrZero(mac) {
continue
}
oidSuffix := result.Name[len(macOID)+1:]
ip, hasIP := ipMap[oidSuffix]
ifIndex, hasIfIndex := ifIndexMap[oidSuffix]
var ips []net.IP
if hasIP {
ips = []net.IP{ip}
}
ifName := ""
if hasIfIndex {
ifName = ifNames[ifIndex]
}
if ifName == "" {
ifName = "??"
}
t.nodes.mu.RLock()
deviceNodeID := -1
if id, exists := t.nodes.ipIndex[deviceIP.String()]; exists {
deviceNodeID = id
}
macNodeID := -1
if id, exists := t.nodes.macIndex[mac.String()]; exists {
macNodeID = id
}
if deviceNodeID != -1 && macNodeID != -1 {
deviceNode := t.nodes.nodes[deviceNodeID]
if deviceNode.ParentID == macNodeID {
t.nodes.mu.RUnlock()
t.nodes.mu.Lock()
if deviceNode.LocalPort == "" {
deviceNode.LocalPort = ifName
}
t.nodes.mu.Unlock()
continue
}
}
t.nodes.mu.RUnlock()
t.nodes.UpdateWithParent(deviceIP, ips, []net.HardwareAddr{mac}, ifName, "", "snmp")
}
}
}
func (t *Tendrils) getBridgePortMapping(snmp *gosnmp.GoSNMP) map[int]int {
oid := "1.3.6.1.2.1.17.1.4.1.2"