github.com/sagernet/sing-box@v1.9.0-rc.20/log/id.go (about)

     1  package log
     2  
     3  import (
     4  	"context"
     5  	"math/rand"
     6  	"time"
     7  
     8  	"github.com/sagernet/sing/common/random"
     9  )
    10  
    11  func init() {
    12  	random.InitializeSeed()
    13  }
    14  
    15  type idKey struct{}
    16  
    17  type ID struct {
    18  	ID        uint32
    19  	CreatedAt time.Time
    20  }
    21  
    22  func ContextWithNewID(ctx context.Context) context.Context {
    23  	return context.WithValue(ctx, (*idKey)(nil), ID{
    24  		ID:        rand.Uint32(),
    25  		CreatedAt: time.Now(),
    26  	})
    27  }
    28  
    29  func IDFromContext(ctx context.Context) (ID, bool) {
    30  	id, loaded := ctx.Value((*idKey)(nil)).(ID)
    31  	return id, loaded
    32  }