forked from ccfos/huatuo
148 lines
3.3 KiB
Go
148 lines
3.3 KiB
Go
// Copyright 2025 The HuaTuo Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package events
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"sync/atomic"
|
|
"time"
|
|
|
|
"huatuo-bamai/internal/bpf"
|
|
"huatuo-bamai/internal/log"
|
|
"huatuo-bamai/internal/storage"
|
|
"huatuo-bamai/internal/utils/bpfutil"
|
|
"huatuo-bamai/pkg/metric"
|
|
"huatuo-bamai/pkg/tracing"
|
|
|
|
"github.com/vishvananda/netlink"
|
|
)
|
|
|
|
//go:generate $BPF_COMPILE $BPF_INCLUDE -s $BPF_DIR/lacp.c -o $BPF_DIR/lacp.o
|
|
type lacpTracing struct {
|
|
count uint64
|
|
}
|
|
|
|
func init() {
|
|
// bond mode4 (802.3ad) requires bonding.ko module,
|
|
// the kprobe point is in bonding module, if not exist, should not load bpf
|
|
if !isLacpEnv() {
|
|
return
|
|
}
|
|
|
|
tracing.RegisterEventTracing("lacp", newLACPTracing)
|
|
}
|
|
|
|
func newLACPTracing() (*tracing.EventTracingAttr, error) {
|
|
return &tracing.EventTracingAttr{
|
|
TracingData: &lacpTracing{},
|
|
Internal: 60,
|
|
Flag: tracing.FlagTracing | tracing.FlagMetric,
|
|
}, nil
|
|
}
|
|
|
|
func (lacp *lacpTracing) Start(ctx context.Context) (err error) {
|
|
b, err := bpf.LoadBpf(bpfutil.ThisBpfOBJ(), nil)
|
|
if err != nil {
|
|
return fmt.Errorf("Load lacp err: %w", err)
|
|
}
|
|
defer b.Close()
|
|
|
|
childCtx, cancel := context.WithCancel(ctx)
|
|
defer cancel()
|
|
|
|
reader, err := b.AttachAndEventPipe(childCtx, "ad_event_map", 8192)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to AttachAndEventPipe, err: %w", err)
|
|
}
|
|
defer reader.Close()
|
|
|
|
for {
|
|
select {
|
|
case <-childCtx.Done():
|
|
log.Info("lacp tracing is stopped.")
|
|
return nil
|
|
default:
|
|
var tmp uint64
|
|
if err := reader.ReadInto(&tmp); err != nil {
|
|
return fmt.Errorf("read lacp perf event fail: %w", err)
|
|
}
|
|
|
|
atomic.AddUint64(&lacp.count, 1)
|
|
|
|
bondInfo, err := readAllFiles("/proc/net/bonding")
|
|
if err != nil {
|
|
log.Warnf("read dir /proc/net/bonding err: %v", err)
|
|
continue
|
|
}
|
|
|
|
tracerData := struct {
|
|
Content string `json:"content"`
|
|
}{
|
|
Content: bondInfo,
|
|
}
|
|
|
|
log.Debugf("bond info: %s", tracerData.Content)
|
|
storage.Save("lacp", "", time.Now(), tracerData)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (lacp *lacpTracing) Update() ([]*metric.Data, error) {
|
|
return []*metric.Data{
|
|
metric.NewGaugeData("lacp", float64(atomic.LoadUint64(&lacp.count)),
|
|
"lacp disabled count", nil),
|
|
}, nil
|
|
}
|
|
|
|
func readAllFiles(dir string) (string, error) {
|
|
var content string
|
|
|
|
return content, filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if info.IsDir() {
|
|
return nil
|
|
}
|
|
|
|
data, err := os.ReadFile(path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
content += path + "\n" + string(data)
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func isLacpEnv() bool {
|
|
links, err := netlink.LinkList()
|
|
if err != nil {
|
|
return false
|
|
}
|
|
|
|
for _, l := range links {
|
|
if l.Type() == "bond" &&
|
|
l.(*netlink.Bond).Mode == netlink.BOND_MODE_802_3AD {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|