feat: client cannot write tag that within reserved range

ai/function_call.go

@@ -8,7 +8,7 @@ import (
 )
 
 // ReducerTag is the observed tag of the reducer
-var ReducerTag uint32 = 0x61
+var ReducerTag uint32 = 0xE001
 
 // FunctionCall describes the data structure when invoking the sfn function
 type FunctionCall struct {

core/client_test.go

@@ -54,6 +54,8 @@ func TestConnectTo(t *testing.T) {
 		ClientTypeSource,
 		WithLogger(discardingLogger),
 	)
+	assert.Equal(t, "source", source.Name())
+	assert.Equal(t, source.clientID, source.ClientID())
 
 	_ = source.Connect(context.TODO())
 

core/frame/frame.go

@@ -3,6 +3,7 @@ package frame
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -174,6 +175,17 @@ type Writer interface {
 	WriteFrame(Frame) error
 }
 
+// ErrReservedTag is returned when write a reserved tag.
+var ErrReservedTag = errors.New("[0xF000, 0xFFFF] is reserved; please do not write within this range")
+
+// IsReservedTag returns error when write a reserved tag.
+func IsReservedTag(tag Tag) error {
+	if tag >= 0xF000 && tag <= 0xFFFF {
+		return ErrReservedTag
+	}
+	return nil
+}
+
 // Listener accepts Conns.
 type Listener interface {
 	// Accept accepts Conns.

core/serverless/context.go

@@ -44,7 +44,9 @@ func (c *Context) Write(tag uint32, data []byte) error {
 	if data == nil {
 		return nil
 	}
-
+	if err := frame.IsReservedTag(tag); err != nil {
+		return err
+	}
 	mdBytes, err := c.md.Encode()
 	if err != nil {
 		return err
@@ -63,7 +65,9 @@ func (c *Context) WriteWithTarget(tag uint32, data []byte, target string) error
 	if data == nil {
 		return nil
 	}
-
+	if err := frame.IsReservedTag(tag); err != nil {
+		return err
+	}
 	if target != "" {
 		c.md.Set(metadata.TargetKey, target)
 	}

core/serverless/cron_context.go

@@ -28,7 +28,9 @@ func (c *CronContext) Write(tag uint32, data []byte) error {
 	if data == nil {
 		return nil
 	}
-
+	if err := frame.IsReservedTag(tag); err != nil {
+		return err
+	}
 	dataFrame := &frame.DataFrame{
 		Tag:      tag,
 		Metadata: c.mdBytes,
@@ -43,7 +45,9 @@ func (c *CronContext) WriteWithTarget(tag uint32, data []byte, target string) er
 	if data == nil {
 		return nil
 	}
-
+	if err := frame.IsReservedTag(tag); err != nil {
+		return err
+	}
 	if target == "" {
 		return c.Write(tag, data)
 	}

go.mod

@@ -15,7 +15,7 @@ require (
 	github.com/quic-go/quic-go v0.43.1
 	github.com/reactivex/rxgo/v2 v2.5.0
 	github.com/robfig/cron/v3 v3.0.1
-	github.com/sashabaranov/go-openai v1.23.1
+	github.com/sashabaranov/go-openai v1.24.0
 	github.com/second-state/WasmEdge-go v0.13.4
 	github.com/shirou/gopsutil/v3 v3.24.2
 	github.com/spf13/cobra v1.8.0

go.sum

@@ -169,8 +169,8 @@ github.com/sagikazarmark/locafero v0.4.0 h1:HApY1R9zGo4DBgr7dqsTH/JJxLTTsOt7u6ke
 github.com/sagikazarmark/locafero v0.4.0/go.mod h1:Pe1W6UlPYUk/+wc/6KFhbORCfqzgYEpgQ3O5fPuL3H4=
 github.com/sagikazarmark/slog-shim v0.1.0 h1:diDBnUNK9N/354PgrxMywXnAwEr1QZcOr6gto+ugjYE=
 github.com/sagikazarmark/slog-shim v0.1.0/go.mod h1:SrcSrq8aKtyuqEI1uvTDTK1arOWRIczQRv+GVI1AkeQ=
-github.com/sashabaranov/go-openai v1.23.1 h1:b2IsEG9+BdJ3f6G3gGu9Lon2Mw/C0aYqME3YzwBHcls=
-github.com/sashabaranov/go-openai v1.23.1/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
+github.com/sashabaranov/go-openai v1.24.0 h1:4H4Pg8Bl2RH/YSnU8DYumZbuHnnkfioor/dtNlB20D4=
+github.com/sashabaranov/go-openai v1.24.0/go.mod h1:lj5b/K+zjTSFxVLijLSTDZuP7adOgerWeFyZLUhAKRg=
 github.com/second-state/WasmEdge-go v0.13.4 h1:NHfJC+aayUW93ydAzlcX7Jx1WDRpI24KvY5SAbeTyvY=
 github.com/second-state/WasmEdge-go v0.13.4/go.mod h1:HyBf9hVj1sRAjklsjc1Yvs9b5RcmthPG9z99dY78TKg=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=

source.go

@@ -71,6 +71,9 @@ func (s *yomoSource) Connect() error {
 
 // Write writes data with specified tag.
 func (s *yomoSource) Write(tag uint32, data []byte) error {
+	if err := frame.IsReservedTag(tag); err != nil {
+		return err
+	}
 	md := core.NewMetadata(s.client.ClientID(), id.New())
 	// add trace
 	tracer := trace.NewTracer("Source")
@@ -98,8 +101,8 @@ func (s *yomoSource) Write(tag uint32, data []byte) error {
 
 // WritePayload writes `yomo.Payload` with specified tag.
 func (s *yomoSource) WriteWithTarget(tag uint32, data []byte, target string) error {
-	if data == nil {
-		return nil
+	if err := frame.IsReservedTag(tag); err != nil {
+		return err
 	}
 	md := core.NewMetadata(s.client.ClientID(), id.New())
 	// add trace

source_test.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/yomorun/yomo/core"
+	"github.com/yomorun/yomo/core/frame"
 	"github.com/yomorun/yomo/core/ylog"
 )
 
@@ -35,6 +36,9 @@ func TestSource(t *testing.T) {
 	err := source.Connect()
 	assert.Nil(t, err)
 
+	err = source.Write(0xF001, []byte("reserved tag"))
+	assert.Equal(t, frame.ErrReservedTag, err)
+
 	// send data to zipper from source
 	err = source.Write(0x23, []byte("pipe test"))
 	assert.Nil(t, err)
@@ -43,6 +47,9 @@ func TestSource(t *testing.T) {
 	err = source.Write(0x21, []byte("test"))
 	assert.Nil(t, err)
 
+	err = source.WriteWithTarget(0xF002, []byte("reserved tag"), mockTargetString)
+	assert.Equal(t, frame.ErrReservedTag, err)
+
 	err = source.WriteWithTarget(0x22, []byte("message from source"), mockTargetString)
 	assert.Nil(t, err)