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package main
import (
"flag"
"fmt"
"log"
"git.fd.io/govpp.git"
"git.fd.io/govpp.git/adapter"
"git.fd.io/govpp.git/adapter/vppapiclient"
"git.fd.io/govpp.git/api"
"git.fd.io/govpp.git/core"
"git.fd.io/govpp.git/examples/bin_api/interfaces"
"git.fd.io/govpp.git/examples/bin_api/vpe"
)
//////////////////////////////////////
///////// Data structs ///////////
//////////////////////////////////////
const defaultStatsSocketPath = "/run/vpp/stats.sock"
const defaultShmPrefix = ""
func parseMacAddress(l2Address []byte, l2AddressLength uint32) string {
var mac string
for i := uint32(0); i < l2AddressLength; i++ {
mac += fmt.Sprintf("%02x", l2Address[i])
if i < l2AddressLength-1 {
mac += ":"
}
}
return mac
}
type interfaceStats struct {
TxBytes uint64
TxPackets uint64
TxErrors uint64
RxBytes uint64
RxPackets uint64
RxErrors uint64
Drops uint64
Punts uint64
}
type vppInterface struct {
interfaces.SwInterfaceDetails
Stats interfaceStats
}
type vppConnector struct {
statsSocketPath string
shmPrefix string
conn *core.Connection
api api.Channel
stats adapter.StatsAPI
VppDetails vpe.ShowVersionReply
Interfaces []*vppInterface
}
//////////////////////////////////////
///////// VPP workflow ///////////
//////////////////////////////////////
func (v *vppConnector) getVppVersion() error {
if err := v.api.SendRequest(&vpe.ShowVersion{}).ReceiveReply(&v.VppDetails); err != nil {
return fmt.Errorf("failed to fetch vpp version: %v", err)
}
return nil
}
func (v *vppConnector) getInterfaces() error {
ifCtx := v.api.SendMultiRequest(&interfaces.SwInterfaceDump{})
for {
ifDetails := interfaces.SwInterfaceDetails{}
stop, err := ifCtx.ReceiveReply(&ifDetails)
if err != nil {
return fmt.Errorf("failed to fetch vpp interface: %v", err)
}
if stop {
break
}
v.Interfaces = append(v.Interfaces, &vppInterface{SwInterfaceDetails: ifDetails})
}
return nil
}
func (v *vppConnector) connect() (err error) {
if v.conn, err = govpp.Connect(v.shmPrefix); err != nil {
return fmt.Errorf("failed to connect to vpp: %v", err)
}
if v.api, err = v.conn.NewAPIChannel(); err != nil {
return fmt.Errorf("failed to create api channel: %v", err)
}
v.stats = vppapiclient.NewStatClient(v.statsSocketPath)
if err = v.stats.Connect(); err != nil {
return fmt.Errorf("failed to connect to Stats adapter: %v", err)
}
return
}
func (v *vppConnector) disconnect() {
if v.stats != nil {
v.stats.Disconnect()
}
if v.conn != nil {
v.conn.Disconnect()
}
}
func (v *vppConnector) reduceCombinedCounters(stat *adapter.StatEntry) *[]adapter.CombinedCounter {
counters := stat.Data.(adapter.CombinedCounterStat)
stats := make([]adapter.CombinedCounter, len(v.Interfaces))
for _, workerStats := range counters {
for i := 0; i < len(v.Interfaces); i++ {
stats[i].Bytes += workerStats[i].Bytes
stats[i].Packets += workerStats[i].Packets
}
}
return &stats
}
func (v *vppConnector) reduceSimpleCounters(stat *adapter.StatEntry) *[]adapter.Counter {
counters := stat.Data.(adapter.SimpleCounterStat)
stats := make([]adapter.Counter, len(v.Interfaces))
for _, workerStats := range counters {
for i := 0; i < len(v.Interfaces); i++ {
stats[i] += workerStats[i]
}
}
return &stats
}
func (v *vppConnector) getStatsForAllInterfaces() error {
statsDump, err := v.stats.DumpStats("/if")
if err != nil {
return fmt.Errorf("failed to dump vpp Stats: %v", err)
}
stats := func(i int) *interfaceStats { return &v.Interfaces[uint32(i)].Stats }
for _, stat := range statsDump {
switch stat.Name {
case "/if/tx":
{
for i, counter := range *v.reduceCombinedCounters(stat) {
stats(i).TxBytes = uint64(counter.Bytes)
stats(i).TxPackets = uint64(counter.Packets)
}
}
case "/if/rx":
{
for i, counter := range *v.reduceCombinedCounters(stat) {
stats(i).RxBytes = uint64(counter.Bytes)
stats(i).RxPackets = uint64(counter.Packets)
}
}
case "/if/tx-error":
{
for i, counter := range *v.reduceSimpleCounters(stat) {
stats(i).TxErrors = uint64(counter)
}
}
case "/if/rx-error":
{
for i, counter := range *v.reduceSimpleCounters(stat) {
stats(i).RxErrors = uint64(counter)
}
}
case "/if/drops":
{
for i, counter := range *v.reduceSimpleCounters(stat) {
stats(i).Drops = uint64(counter)
}
}
case "/if/punt":
{
for i, counter := range *v.reduceSimpleCounters(stat) {
stats(i).Punts = uint64(counter)
}
}
}
}
return nil
}
//////////////////////////////////////
func main() {
statsSocketPathPtr := flag.String("stats_socket_path", defaultStatsSocketPath, "Path to vpp stats socket")
shmPrefixPtr := flag.String("shm_prefix", defaultShmPrefix, "Shared memory prefix (advanced)")
flag.Parse()
vppConn := &vppConnector{statsSocketPath: *statsSocketPathPtr, shmPrefix: *shmPrefixPtr}
defer vppConn.disconnect()
if err := vppConn.connect(); err != nil {
log.Fatalln(err)
}
if err := vppConn.getVppVersion(); err != nil {
log.Fatalln(err)
}
if err := vppConn.getInterfaces(); err != nil {
log.Fatalln(err)
}
if err := vppConn.getStatsForAllInterfaces(); err != nil {
log.Fatalln(err)
}
jsonString, err := dumpToJSONString(vppConn)
if err != nil {
log.Fatalln(err)
}
fmt.Println(jsonString)
}
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