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package trace
import (
"fmt"
"net"
"os"
"sync"
"sync/atomic"
"time"
"github.com/GoAdminGroup/go-admin/context"
)
var (
machineIDOnce sync.Once
machineID string
counter uint32
)
func getMachineID() string {
machineIDOnce.Do(func() {
addrs, err := net.InterfaceAddrs()
if err == nil {
for _, addr := range addrs {
if ipNet, ok := addr.(*net.IPNet); ok && !ipNet.IP.IsLoopback() {
if ipNet.IP.To4() != nil {
machineID = ipNet.IP.String()
break
}
}
}
}
if machineID == "" {
machineID = "127.0.0.1"
}
})
return machineID
}
func GenerateTraceID() string {
machineID := getMachineID()
timestamp := time.Now().UnixNano() / int64(time.Millisecond)
processID := os.Getpid()
id := atomic.AddUint32(&counter, 1)
id = id % 1000
traceID := fmt.Sprintf("%08x%05d%013d%04d", machineIDToHex(machineID), processID, timestamp, id)
return traceID
}
func machineIDToHex(machineID string) uint32 {
ip := net.ParseIP(machineID)
ipUint32 := uint32(ip[12])<<24 | uint32(ip[13])<<16 | uint32(ip[14])<<8 | uint32(ip[15])
return ipUint32
}
func GetTraceID(ctx *context.Context) string {
traceID, ok := ctx.GetUserValue(TraceIDKey).(string)
if !ok {
return ""
}
return traceID
}
const (
TraceIDKey = "traceID"
)
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