ebpf/pkg/go.opentelemetry.io/otel/exporters/otlp/otlptrace/apm_exporter.go

package otlptrace

import (
	"crypto/md5"
	"encoding/json"
	"fmt"
	"math"
	"net/url"
	"sort"
	"strconv"
	"sync"

	. "github.com/coroot/coroot-node-agent/ebpftracer"
	"github.com/coroot/coroot-node-agent/ebpftracer/l7"
	"github.com/coroot/coroot-node-agent/utils"
	klog "github.com/sirupsen/logrus"

	"go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal/tracetransform"
	tracesdk "go.opentelemetry.io/otel/sdk/trace"
	tracepb "go.opentelemetry.io/proto/otlp/trace/v1"
)

const (
	APP_SERVICE_TYPE   = "APPLICATION"
	SQL_SERVICE_TYPE   = "SQL"
	NOSQL_SERVICE_TYPE = "NOSQL"
	HTTP_SERVICE_TYPE  = "HTTP"
	NET_SERVICE_TYPE   = "L7_NET"
	RPC_SERVICE_TYPE   = "RPC"
	MQ_SERVICE_TYPE    = "MQ"
)

const (
	GO_SERVICE_NAME         = "GO"
	MYSQL_SERVICE_NAME      = "MYSQL"
	DM_SERVICE_NAME         = "DM"
	REDIS_SERVICE_NAME      = "REDIS"
	MONGO_SERVICE_NAME      = "MONGODB"
	HTTP_SERVICE_NAME       = "HTTPCLIENT"
	POSTGRESQL_SERVICE_NAME = "POSTGRESQL"
	GRPC_SERVICE_NAME       = "GRPC"
)

type apmTraceSpan tracesdk.ReadOnlySpan

// GO:0:10154813500555812:5450531005555981:5610250100539899:ee022542c3940f1b:1001025098564810:888ceb3df1bdbe2c:110
type RootDataT struct {
	AccountId       int           `json:"account_id"`
	AgentId         int64         `json:"agent_id"`
	AgentVersion    string        `json:"agent_version"`
	AppId           int64         `json:"app_id"`
	AppIdFrom       int64         `json:"app_id_from"` // from header app_id
	AppName         string        `json:"app_name"`
	CalledId        int64         `json:"called_id"` // from header assumed_app_id
	ClientIp        string        `json:"client_ip"`
	CollTime        uint64        `json:"coll_time"`
	Cpu             int           `json:"cpu"`
	Custom          string        `json:"custom"`
	HostId          int64         `json:"host_id"`
	HostName        string        `json:"host_name"`
	HttpCode        int64         `json:"http_code"`
	HttpMethod      string        `json:"http_method"`
	InstanceId      int64         `json:"instance_id"`
	InstanceIdFrom  int64         `json:"instance_id_from"` // from header instance_id
	LocalPort       int64         `json:"local_port"`
	Maps            []MapInfoT    `json:"maps"`
	MemU            int           `json:"mem_u"`
	MemUP           int           `json:"mem_u_p"`
	OperType        string        `json:"oper_type"`
	Parameters      []ParamStruct `json:"parameters,omitempty"`
	ParentTaskName  string        `json:"parent_task_name"`
	Period          int           `json:"period"`
	RespTime        uint64        `json:"resp_time"`
	Sampling        int           `json:"sampling"`
	ServiceName     string        `json:"service_name"`
	ServiceType     string        `json:"service_type"`
	Sip             string        `json:"sip"`
	Sn              string        `json:"sn"`
	SpanIdFrom      string        `json:"span_id_from"` // from header span_id
	Sport           int64         `json:"sport"`
	TId             int           `json:"t_id"`
	TName           string        `json:"t_name"`
	TraceId         string        `json:"trace_id"` // from header trace_id
	TransIds        []interface{} `json:"trans_ids"`
	TypeFrom        string        `json:"type_from"`
	Uri             string        `json:"uri"`
	UserDir         string        `json:"user_dir"`
	VipIds          []interface{} `json:"vip_ids"`
	SrcAddr         string        `json:"src_addr"`
	DestinationAddr string        `json:"destination_addr"`
	UserAgent       string        `json:"user_agent"`
	// op 新增字段
	Pid             uint32 `json:"pid"`
	ContainerID     string `json:"container_id"`
	Sys             string `json:"sys"`
	SystemUUID      string `json:"system_uuid"`
	ParentSys       string `json:"parent_sys"`        // from cwother header: SysTag
	AppNameFrom     string `json:"app_name_from"`     // from cwother header: app_name
	ServiceTypeFrom string `json:"service_type_from"` // from cwother header: appServiceType
}

// ParamStruct 定义目标结构
type ParamStruct struct {
	Name   string   `json:"name"`
	Values []string `json:"values"`
}

type MapInfoT struct {
	Dbn             string   `json:"dbn,omitempty"`
	Exception       int      `json:"exception,omitempty"`
	ExceptionMsg    string   `json:"exception_msg,omitempty"`
	ExceptionStack  string   `json:"exception_stack,omitempty"`
	Ip              string   `json:"ip,omitempty"`
	Level           int      `json:"level"`
	MethodDesc      string   `json:"method_desc,omitempty"`
	MethodName      string   `json:"method_name"`
	Nid             int      `json:"nid"`
	OperType        string   `json:"oper_type,omitempty"`
	Pid             int      `json:"pid"`
	Port            int64    `json:"port,omitempty"`
	Ps              []string `json:"ps,omitempty"`
	PureTime        uint64   `json:"pure_time"`
	ServiceName     string   `json:"service_name"`
	ServiceType     string   `json:"service_type"`
	StartTime       uint64   `json:"-"`
	EndTime         uint64   `json:"-"`
	StartTimeMs     uint64   `json:"start_time"`
	EndTimeMs       uint64   `json:"end_time"`
	WallTime        uint64   `json:"wall_time"`
	Schema          string   `json:"schema,omitempty"`
	AssumedAppId    int64    `json:"assumed_app_id,omitempty"`
	Uri             string   `json:"uri,omitempty"`
	SpanId          string   `json:"span_id,omitempty"`
	SrcAddr         string   `json:"src_addr,omitempty"`
	DestinationAddr string   `json:"destination_addr,omitempty"`
}

type TraceMapT struct {
	RootData RootDataT
	Index    int
	lock     *sync.RWMutex
	TheEnd   bool
}

var TraceRootMap map[string]*TraceMapT

func init() {
	TraceRootMap = make(map[string]*TraceMapT)
	//go func() {
	//	for {
	//		//fmt.Println(G_sdl)
	//		time.Sleep(5 * time.Second)
	//	}
	//}()
}

var G_sdl int

func tracetransformData(sdl []tracesdk.ReadOnlySpan) map[int][]RootDataT {
	//G_sdl += len(sdl)
	if len(sdl) == 0 {
		return nil
	}
	// 多次请求 sdl
	sendDataMap := make(map[int][]RootDataT)

	//sendData := []RootDataT{}

	for _, sd := range sdl {
		if sd == nil {
			continue
		}
		//traceId := sd.SpanContext().TraceID().String()
		//fmt.Println("------event_num---- "+sd.Name(), "--->", len(sd.Events())) // 一次请求完整数据
		// 构建map *RootDataT
		var rootData RootDataT

		rootData = initRootDataFromEvent()

		// build http入口 MapInfoT
		code_type := buildAppMapFromEvent(&rootData, sd)
		// 构建maps
		for _, event := range sd.Events() {
			//aaa, _ := json.Marshal(event)
			//fmt.Println("event.info", string(aaa))
			mNode := buildMapNodeFromEvent(event)
			switch EventType(event.EventType) {
			// stack
			case EventTypeFunEnt:
			// l7 event
			case EventTypeL7Request:
				switch l7.Protocol(event.ProtocolType) {
				case l7.ProtocolHTTP:
					buildHttpMapFromEvent(&mNode, event)
				case l7.ProtocolDNS:
					buildDNSMapEvent(&mNode, event)
				case l7.ProtocolMysql, l7.ProtocolMariaDB, l7.ProtocolTiDB, l7.ProtocolPostgres, l7.ProtocolDM:
					buildSQLMapEvent(&mNode, event)
				case l7.ProtocolRedis, l7.ProtocolMemcached, l7.ProtocolCassandra, l7.ProtocolES:
					buildNoSqlMapEvent(&mNode, event)
				case l7.ProtocolMongo:
					buildMongoMapEvent(&mNode, event)
				case l7.ProtocolGrpc:
					buildGrpcMapEvent(&mNode, event)
				case l7.ProtocolKafka:
					buildMQMapEvent(&mNode, event)
				}
			}

			rootData.Maps = append(rootData.Maps, mNode)
			//fmt.Println(event.Name)
			//buildAndAssemblyMapFromEvent(event, rootData)
		}

		buildLevelFromEvent(&rootData)

		sendDataMap[code_type] = append(sendDataMap[code_type], rootData)

		//a, _ := json.Marshal(rootData)
		//fmt.Println(string(a))
		//sendData = append(sendData, rootData)
		//if _, ok := TraceRootMap[traceId]; !ok {
		//TraceRootMap[traceId] = &TraceMapT{RootData: initRootData(traceId), Index: 1}
		//}
		//TraceRootMap[traceId].Index++
		//buildAndAssemblyMap(sd, TraceRootMap[traceId])
	}
	// 发送完整数据 | 大量长耗时请求会增加内存占用
	//sendData := []RootDataT{}
	//for traceId, v := range TraceRootMap {
	//	if v.TheEnd {
	//		buildLevel(v)
	//		sendData = append(sendData, v.RootData)
	//		delete(TraceRootMap, traceId)
	//		//fmt.Println("the end!")
	//	} else {
	//		//fmt.Println("not end!")
	//	}
	//}

	//Transform the categorized map into a slice
	data, _ := json.Marshal(sendDataMap)
	klog.Debug(string(data))
	//fmt.Println(len(sendData))
	//fmt.Println("sdl len:", len(sdl))
	return sendDataMap
}

type TimeMap struct {
	Time uint64
	Type int
	Map  *MapInfoT
}

//type TraceMapT struct {
//	RootData RootDataT
//	Index    int
//	lock     *sync.RWMutex
//	TheEnd   bool
//}

//func buildLevel(sdl *TraceMapT) {
//	nidMap := make(map[int]*MapInfoT)
//
//	mapSlice := []TimeMap{}
//
//	for i, v := range sdl.RootData.Maps {
//		if v.ServiceType == "APPLICATION" {
//			continue
//		}
//		nidMap[v.Nid] = &sdl.RootData.Maps[i]
//		timeStartMap := TimeMap{
//			Time: v.StartTime,
//			Type: 0,
//			Map:  &sdl.RootData.Maps[i],
//		}
//		mapSlice = append(mapSlice, timeStartMap)
//		timeEndMap := TimeMap{
//			Time: v.EndTime,
//			Type: 1,
//			Map:  &sdl.RootData.Maps[i],
//		}
//		mapSlice = append(mapSlice, timeEndMap)
//	}
//	sort.Slice(mapSlice, func(i, j int) bool {
//		return mapSlice[i].Time < mapSlice[j].Time
//	})
//
//	funStack := []TimeMap{}
//
//	currentNid := 1
//	Nid := 2
//	level := 2
//
//	for _, v := range mapSlice {
//		// fmt.Println("SliceSliceindex", k, "value", v.Time, v.Type, v.Map.MethodName, v.Map.Nid)
//		if v.Type == 0 {
//			// 函数入口
//			funStack = append(funStack, v)
//			v.Map.Pid = currentNid
//			v.Map.Level = level
//			v.Map.Nid = Nid
//			currentNid = Nid
//			level += 1
//			Nid += 1
//		} else if v.Type == 1 {
//			// 函数出口
//			len := len(funStack)
//			funStack = funStack[:len-1]
//			if (len - 2) < 0 {
//				currentNid = 1
//			} else {
//				currentNid = funStack[len-2].Map.Nid
//			}
//
//			level -= 1
//		}
//	}
//}

func buildLevelFromEvent(sdl *RootDataT) {
	nidMap := make(map[int]*MapInfoT)

	mapSlice := []TimeMap{}

	for i, v := range sdl.Maps {
		if v.ServiceType == "APPLICATION" || v.Level == 1 {
			continue
		}
		nidMap[v.Nid] = &sdl.Maps[i]
		timeStartMap := TimeMap{
			Time: v.StartTime,
			Type: 0,
			Map:  &sdl.Maps[i],
		}
		mapSlice = append(mapSlice, timeStartMap)
		timeEndMap := TimeMap{
			Time: v.EndTime,
			Type: 1,
			Map:  &sdl.Maps[i],
		}
		mapSlice = append(mapSlice, timeEndMap)
	}
	sort.Slice(mapSlice, func(i, j int) bool {
		return mapSlice[i].Time < mapSlice[j].Time
	})

	funStack := []TimeMap{}

	currentNid := 1
	Nid := 2
	level := 2

	for _, v := range mapSlice {
		//klog.Debugln("SliceSliceindex", k, "value", v.Time, v.Type, v.Map.MethodName, v.Map.Nid)
		if v.Type == 0 {
			// 函数入口
			funStack = append(funStack, v)
			v.Map.Pid = currentNid
			v.Map.Level = level
			v.Map.Nid = Nid
			currentNid = Nid
			level += 1
			Nid += 1
		} else if v.Type == 1 {
			// 函数出口
			len := len(funStack)
			funStack = funStack[:len-1]
			if (len - 2) < 0 {
				currentNid = 1
			} else {
				currentNid = funStack[len-2].Map.Nid
			}

			level -= 1
		}
	}
}

//func initRootData(traceId string) RootDataT {
//	data := RootDataT{
//		AccountId:      110,
//		AgentId:        1011005252979954, // TODO 更新 基于 ip:port + process_name + exe路径生成
//		AgentVersion:   "2.1.0",
//		AppId:          5410049101545798, // TODO 更新 基于appname生成
//		AppIdFrom:      -1,
//		AppName:        "eBPF-agent", // TODO 更新 ip:port || process_name
//		CalledId:       -1,
//		ClientIp:       "",
//		CollTime:       0,
//		Cpu:            0,
//		Custom:         "",
//		HostId:         10154813500555812,
//		HostName:       "localhost",
//		HttpCode:       0,
//		HttpMethod:     "",
//		InstanceId:     1005051101515357, // TODO 更新 基于ip:port
//		InstanceIdFrom: -1,
//		Maps:           []MapInfoT{},
//		MemU:           0,
//		MemUP:          0,
//		OperType:       "",
//		Parameters:     []interface{}{},
//		ParentTaskName: 0,
//		Period:         -1,
//		RespTime:       0,
//		Sampling:       0,
//		ServiceName:    "GO",
//		ServiceType:    APP_SERVICE_TYPE,
//		Sip:            "",
//		Sn:             "",
//		SpanIdFrom:     "",
//		Sport:          0,
//		TId:            -1,
//		TName:          "",
//		TraceId:        traceId,
//		TransIds:       []interface{}{},
//		TypeFrom:       "",
//		Uri:            "",
//		UserDir:        0,
//		VipIds:         []interface{}{},
//	}
//	return data
//}

func initRootDataFromEvent() RootDataT {
	hostID := utils.GetHostID()
	accountID := utils.GetAccountID()
	sip := utils.GetHostIP()
	sysTag := utils.GetSysTag()
	systemUUID := utils.GetSystemUUID()
	agentVersion := utils.GetAgentVersion()
	data := RootDataT{
		// todo AccountId
		AccountId:       accountID,
		AgentId:         0, // 基于 ip:port + process_name + exe路径生成
		AgentVersion:    agentVersion,
		AppId:           0, // 基于appname生成
		AppIdFrom:       -1,
		AppName:         "eBPF-agent", // server配置
		CalledId:        -1,
		ClientIp:        "",
		CollTime:        0,
		Cpu:             0,
		Custom:          "",
		HostId:          hostID,
		HostName:        "localhost",
		HttpCode:        0,
		HttpMethod:      "",
		InstanceId:      0, // 基于ip:port
		InstanceIdFrom:  -1,
		Maps:            []MapInfoT{},
		MemU:            0,
		MemUP:           0,
		OperType:        "",
		Parameters:      []ParamStruct{},
		ParentTaskName:  "",
		Period:          -1,
		RespTime:        0,
		Sampling:        0,
		ServiceName:     "",
		ServiceType:     APP_SERVICE_TYPE,
		Sip:             sip,
		Sn:              "",
		SpanIdFrom:      "",
		Sport:           0,
		TId:             -1,
		TName:           "",
		TraceId:         "",
		TransIds:        []interface{}{},
		TypeFrom:        "",
		Uri:             "",
		UserDir:         "",
		VipIds:          []interface{}{},
		SrcAddr:         "",
		DestinationAddr: "",
		Sys:             sysTag,
		SystemUUID:      systemUUID,
		UserAgent:       "",
	}
	return data
}

func initRootDataJava() RootDataT {
	data := RootDataT{
		AccountId:      110,
		AgentId:        3934815089541000, // TODO 更新 基于 ip:port + process_name + exe路径生成
		AgentVersion:   "2.21.0",
		AppId:          3365853273187618, // TODO 更新 基于appname生成
		AppIdFrom:      -1,
		AppName:        "eBPF-javaApplication", // TODO 更新 ip:port || process_name
		CalledId:       -1,
		ClientIp:       "",
		CollTime:       0,
		Cpu:            0,
		Custom:         "",
		HostId:         2315065183171055,
		HostName:       "localhost",
		HttpCode:       0,
		HttpMethod:     "",
		InstanceId:     1128864082033413, // TODO 更新 基于ip:port
		InstanceIdFrom: -1,
		Maps:           []MapInfoT{},
		MemU:           0,
		MemUP:          0,
		OperType:       "",
		Parameters:     []ParamStruct{},
		ParentTaskName: "",
		Period:         -1,
		RespTime:       0,
		Sampling:       0,
		ServiceName:    "TOMCAT",
		ServiceType:    APP_SERVICE_TYPE,
		Sip:            "",
		Sn:             "",
		SpanIdFrom:     "",
		Sport:          0,
		TId:            -1,
		TName:          "",
		TraceId:        "",
		TransIds:       []interface{}{},
		TypeFrom:       "",
		Uri:            "",
		UserDir:        "",
		VipIds:         []interface{}{},
	}
	return data
}

//func initMapNode(spanSd *tracepb.Span) (MapInfoT, string) {
//	mNode := MapInfoT{
//		Exception:      0,
//		ExceptionMsg:   "",
//		ExceptionStack: "",
//		Ip:             "",
//		Level:          2,
//		Pid:            1,
//		Port:           0,
//		Ps:             []string{},
//		ServiceName:    "",
//		ServiceType:    "",
//		WallTime:       0,
//	}
//	mNode.MethodName = spanSd.Name
//	mNode.PureTime = (spanSd.EndTimeUnixNano - spanSd.StartTimeUnixNano) / 1e3
//	mNode.WallTime = mNode.PureTime
//	mNode.StartTime = spanSd.StartTimeUnixNano
//	mNode.EndTime = spanSd.EndTimeUnixNano
//
//	for _, attr := range spanSd.GetAttributes() {
//		fmt.Println(attr.Key, ":", attr.Value.GetValue())
//
//		switch attr.Key {
//		case "nid":
//			mNode.Nid = int(attr.Value.GetIntValue())
//		case "pid":
//			mNode.Pid = int(attr.Value.GetIntValue())
//		case "level":
//			mNode.Level = int(attr.Value.GetIntValue())
//		}
//	}
//
//	return mNode, spanSd.Name
//}

func buildMapNodeFromEvent(event tracesdk.Event) MapInfoT {
	mNode := MapInfoT{
		Exception:      0,
		ExceptionMsg:   "",
		ExceptionStack: "",
		Ip:             "",
		Level:          2,
		Pid:            1,
		Port:           0,
		Ps:             []string{},
		ServiceName:    "",
		ServiceType:    "",
		WallTime:       0,
	}
	mNode.MethodName = event.Name
	//mNode.PureTime = (event.EndTimeUnixNano - event.StartTimeUnixNano) / 1e3
	//mNode.WallTime = mNode.PureTime
	//mNode.StartTime = spanSd.StartTimeUnixNano
	//mNode.EndTime = spanSd.EndTimeUnixNano
	for _, attr := range event.Attributes {
		//fmt.Println(event.Name, "--->buildMapNodeFromEvent--->", attr.Key, ":", attr.Value.AsInterface())
		switch attr.Key {
		case "nid":
			mNode.Nid = int(attr.Value.AsInt64())
		case "pid":
			mNode.Pid = int(attr.Value.AsInt64())
		case "level":
			mNode.Level = int(attr.Value.AsInt64())
		case "time.start_at":
			mNode.StartTime, mNode.StartTimeMs = cleanNsTime(attr.Value.AsInt64())
		case "time.end_at":
			mNode.EndTime, mNode.EndTimeMs = cleanNsTime(attr.Value.AsInt64())
		case "time.duration":
			//mNode.PureTime = uint64(attr.Value.AsInt64()) / 1e3
			mNode.WallTime = uint64(attr.Value.AsInt64()) / 1e3
		}

	}

	return mNode
}

func parseURIToParams(input string) (string, []ParamStruct, error) {
	// 解析输入 URI
	parsedURL, err := url.Parse(input)
	if err != nil {
		return "", nil, fmt.Errorf("failed to parse URI: %w", err)
	}

	// 提取查询参数
	queryParams := parsedURL.Query()

	// 转换为目标结构
	var params []ParamStruct
	for key, values := range queryParams {
		params = append(params, ParamStruct{
			Name:   key,
			Values: values,
		})
	}

	return parsedURL.Path, params, nil
}

// 构建拼装
//func buildAndAssemblyMap(sd apmTraceSpan, traceRoot *TraceMapT) MapInfoT {
//	mNode, mapType := initMapNode(span(sd))
//	switch mapType {
//	case "APPLICATION":
//		buildAppMap(&mNode, traceRoot, sd)
//		traceRoot.TheEnd = true
//	case "HTTP":
//		buildHttpMap(&mNode, sd)
//	case "Mysql":
//		buildMysqlMap(&mNode, sd)
//	case "Redis":
//		buildRedisMap(&mNode, sd)
//	}
//	if mapType != "" {
//		mNode.Nid = traceRoot.Index
//		traceRoot.RootData.Maps = append(traceRoot.RootData.Maps, mNode)
//	}
//	return mNode
//}

//func buildAndAssemblyMapFromEvent(event tracesdk.Event, traceRoot *RootDataT) MapInfoT {
//	mNode := buildMapNodeFromEvent(event)
//	switch mapType {
//	case "HTTP":
//		buildHttpMapFromEvent(mNode, event)
//		//case "Mysql":
//		//	buildMysqlMap(mNode, sd)
//		//case "Redis":
//		//	buildRedisMap(mNode, sd)
//	}
//	if mapType != "" {
//		//mNode.Nid = traceRoot.Index
//		traceRoot.Maps = append(traceRoot.Maps, mNode)
//	}
//	return mNode
//}

//func buildAppMap(mNode *MapInfoT, traceRoot *TraceMapT, sd apmTraceSpan) {
//	mNode.ServiceName = GO_SERVICE_NAME
//	mNode.ServiceType = APP_SERVICE_TYPE
//	mNode.MethodName = "net/http.(*Transport).roundTrip()"
//	mNode.Level = 1
//	mNode.Pid = 0
//	mNode.Nid = 1
//	// 构建root节点
//	traceRoot.RootData.RespTime = mNode.PureTime
//	traceRoot.RootData.CollTime = mNode.StartTime
//	traceRoot.Index = 1
//	for _, attr := range sd.Attributes() {
//		fmt.Println(attr.Key, ":", attr.Value.AsInterface())
//		switch attr.Key {
//		case "http.uri":
//			traceRoot.RootData.Uri = attr.Value.AsString()
//		case "http.method":
//			traceRoot.RootData.HttpMethod = attr.Value.AsString()
//		case "http.status_code":
//			traceRoot.RootData.HttpCode = attr.Value.AsInt64()
//		case "net.peer.name":
//			traceRoot.RootData.ClientIp = attr.Value.AsString()
//			traceRoot.RootData.Sip = attr.Value.AsString()
//			traceRoot.RootData.Sn = attr.Value.AsString()
//		case "net.peer.port":
//			traceRoot.RootData.Sport = attr.Value.AsInt64()
//			traceRoot.RootData.LocalPort = attr.Value.AsInt64()
//		case "server.trace_id_from":
//			traceRoot.RootData.TraceId = attr.Value.AsString()
//		case "server.called_id":
//			traceRoot.RootData.CalledId = attr.Value.AsInt64()
//		case "server.instance_id_from":
//			traceRoot.RootData.InstanceIdFrom = attr.Value.AsInt64()
//		case "server.app_id_from":
//			traceRoot.RootData.AppIdFrom = attr.Value.AsInt64()
//		case "server.span_id_from":
//			traceRoot.RootData.SpanIdFrom = attr.Value.AsString()
//		case "server.type_from":
//			traceRoot.RootData.TypeFrom = attr.Value.AsString()
//		}
//	}
//
//}

func buildAppMapFromEvent(traceRoot *RootDataT, sd apmTraceSpan) int {
	mNode := MapInfoT{
		Exception:      0,
		ExceptionMsg:   "",
		ExceptionStack: "",
		Ip:             "",
		Level:          1,
		Pid:            1,
		Port:           0,
		Ps:             []string{},
		ServiceName:    "",
		ServiceType:    "",
		WallTime:       0,
	}
	mNode.ServiceName = GO_SERVICE_NAME
	mNode.ServiceType = APP_SERVICE_TYPE
	mNode.MethodName = "Kernel Endpoint()"
	mNode.Level = 1
	mNode.Pid = 0
	mNode.Nid = 1
	var code_type int64
	// 构建root节点
	//traceRoot.RespTime = mNode.PureTimex
	//traceRoot.CollTime = mNode.StartTime
	for _, attr := range sd.Attributes() {
		klog.Debugln("Appmap:", attr.Key, ":", attr.Value.AsInterface())
		switch attr.Key {
		case "http.uri":
			traceRoot.Uri, traceRoot.Parameters, _ = parseURIToParams(attr.Value.AsString())
		case "rpc.uri":
			traceRoot.Uri = attr.Value.AsString()
			mNode.Uri = attr.Value.AsString()
		case "http.method":
			traceRoot.HttpMethod = attr.Value.AsString()
		case "http.status_code":
			traceRoot.HttpCode = attr.Value.AsInt64()
		case "net.peer.name":
			// TODO 修改 ClientIp sip获取方式
			traceRoot.ClientIp = attr.Value.AsString()
			//traceRoot.Sip = attr.Value.AsString()
			traceRoot.Sn = attr.Value.AsString()
		case "net.peer.port":
			traceRoot.Sport = attr.Value.AsInt64()
			traceRoot.LocalPort = attr.Value.AsInt64()
		case "server.trace_id_from":
			traceRoot.TraceId = attr.Value.AsString()
		case "server.called_id":
			traceRoot.CalledId = attr.Value.AsInt64()
		case "server.instance_id_from":
			traceRoot.InstanceIdFrom = attr.Value.AsInt64()
		case "server.app_id_from":
			traceRoot.AppIdFrom = attr.Value.AsInt64()
		case "server.span_id_from":
			traceRoot.SpanIdFrom = attr.Value.AsString()
		case "server.type_from":
			traceRoot.TypeFrom = attr.Value.AsString()
		case "time.start_at":
			mNode.StartTime, mNode.StartTimeMs = cleanNsTime(attr.Value.AsInt64())
			traceRoot.CollTime = mNode.StartTimeMs
		case "time.end_at":
			mNode.EndTime, mNode.EndTimeMs = cleanNsTime(attr.Value.AsInt64())
		case "time.duration":
			traceRoot.RespTime = uint64(attr.Value.AsInt64()) / 1e3
			mNode.PureTime = traceRoot.RespTime
			mNode.WallTime = uint64(attr.Value.AsInt64()) / 1e3
		case "server.code_type":
			code_type = attr.Value.AsInt64()
		case "server.app_name":
			traceRoot.AppName = attr.Value.AsString()
		case "server.service_name":
			traceRoot.ServiceName = attr.Value.AsString()
			mNode.ServiceName = attr.Value.AsString()
		case "rpc.service_type":
			traceRoot.ServiceType = RPC_SERVICE_TYPE
			mNode.ServiceType = RPC_SERVICE_TYPE
		case "rpc.oper_type":
			traceRoot.OperType = "PROVIDER"
			mNode.OperType = "PROVIDER"
		// map tag
		case "service_type":
			mNode.ServiceType = attr.Value.AsString()
		// map tag
		case "oper_type":
			mNode.OperType = attr.Value.AsString()
		case "server.app_id":
			traceRoot.AppId = attr.Value.AsInt64()
		case "server.agent_id":
			traceRoot.AgentId = attr.Value.AsInt64()
		case "server.instance_id":
			traceRoot.InstanceId = attr.Value.AsInt64()
		case "server.src_addr":
			traceRoot.SrcAddr = attr.Value.AsString()
		case "server.dst_addr":
			traceRoot.DestinationAddr = attr.Value.AsString()
		case "server.pid":
			traceRoot.Pid = uint32(attr.Value.AsInt64())
		case "server.container_id":
			traceRoot.ContainerID = attr.Value.AsString()
		case "server.user_agent":
			traceRoot.UserAgent = attr.Value.AsString()
		case "method_name":
			mNode.MethodName = attr.Value.AsString()
		case "mq.ip":
			mNode.Ip = attr.Value.AsString()
		case "mq.port":
			mNode.Port = attr.Value.AsInt64()
		// root tag
		case "server.service_type":
			traceRoot.ServiceType = attr.Value.AsString()
		// root tag
		case "server.oper_type":
			traceRoot.OperType = attr.Value.AsString()
		case "server.sysvc_from":
			// 解析 SysvcFrom 格式：{app_name_len}:app_name:{appServiceType_len}:appServiceType:{SysTagLen}[:SysTag]
			// 例如：08:eBPF-APP:12:APPLICATION:00 或 08:eBPF-APP:12:APPLICATION:03:tag
			sysvcFrom := attr.Value.AsString()
			appNameFrom, serviceTypeFrom, parentSys := parseSysvcFrom(sysvcFrom)
			traceRoot.AppNameFrom = appNameFrom
			traceRoot.ServiceTypeFrom = serviceTypeFrom
			traceRoot.ParentSys = parentSys
		case "service.parent_sys":
			// 支持直接从 attribute 传递
			traceRoot.ParentSys = attr.Value.AsString()
		case "app_name_from":
			// 支持直接从 attribute 传递
			traceRoot.AppNameFrom = attr.Value.AsString()
		}
	}
	traceRoot.Maps = append(traceRoot.Maps, mNode)
	return int(code_type)
}

//func buildHttpMap(mNode *MapInfoT, sd apmTraceSpan) {
//	mNode.ServiceName = HTTP_SERVICE_NAME
//	mNode.ServiceType = HTTP_SERVICE_TYPE
//	mNode.Schema = "http"
//	mNode.MethodName = "net/http.serverHandler.ServeHTTP()"
//	var descAddr string
//	for _, attr := range sd.Attributes() {
//		//fmt.Println(attr.Key, ":", attr.Value.AsInterface())
//		switch attr.Key {
//		case "http.ip":
//			mNode.Ip = attr.Value.AsString()
//			descAddr += mNode.Ip
//		case "http.port":
//			mNode.Port = attr.Value.AsInt64()
//			descAddr += ":" + attr.Value.AsString()
//		case "http.uri":
//			mNode.Uri = attr.Value.AsString()
//		case "http.assumed_app_id":
//			mNode.AssumedAppId = attr.Value.AsInt64()
//		case "http.span_id":
//			mNode.SpanId = attr.Value.AsString()
//		}
//	}
//	//mNode.AssumedAppId = Md5ToInt64(descAddr, 16)
//}

func buildGrpcMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.ServiceName = GRPC_SERVICE_NAME
	mNode.ServiceType = RPC_SERVICE_TYPE
	mNode.Schema = "grpc"
	//mNode.MethodName = "HTTP"
	//var descAddr string
	// var method string
	for _, attr := range event.Attributes {
		switch attr.Key {
		case "rpc.ip":
			mNode.Ip = attr.Value.AsString()
			//descAddr += mNode.Ip
		case "rpc.port":
			mNode.Port = attr.Value.AsInt64()
		case "rpc.method":
			//mNode.MethodName += " " + attr.Value.AsString()
			// method = attr.Value.AsString()
			mNode.MethodName = attr.Value.AsString()
			//descAddr += ":" + attr.Value.AsString()
		case "rpc.uri":
			mNode.Uri = attr.Value.AsString()
			//mNode.MethodName += " " + attr.Value.AsString()
		case "rpc.oper_type":
			mNode.OperType = attr.Value.AsString()
		case "rpc.assumed_app_id":
			mNode.AssumedAppId = attr.Value.AsInt64()
		case "rpc.span_id":
			mNode.SpanId = attr.Value.AsString()
		case "time.start_at":
			mNode.StartTime = uint64(attr.Value.AsInt64())
		case "time.end_at":
			mNode.EndTime = uint64(attr.Value.AsInt64())
		case "time.duration":
			//mNode.PureTime = uint64(attr.Value.AsInt64()) / 1e3
			mNode.WallTime = uint64(attr.Value.AsInt64()) / 1e3
		}
	}
	// mNode.MethodName = fmt.Sprintf("%s %s %s:%d%s", "HTTP", method, mNode.Ip, mNode.Port, mNode.Uri)
	//mNode.AssumedAppId = Md5ToInt64(descAddr, 16)
}

func buildHttpMapFromEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.ServiceName = HTTP_SERVICE_NAME
	mNode.ServiceType = HTTP_SERVICE_TYPE
	mNode.Schema = "http"
	//mNode.MethodName = "HTTP"
	//var descAddr string
	var method string
	for _, attr := range event.Attributes {
		klog.Debugln("HTTP--->", attr.Key, ":", attr.Value.AsInterface())
		switch attr.Key {
		case "http.ip":
			mNode.Ip = attr.Value.AsString()
			//descAddr += mNode.Ip
		case "http.port":
			mNode.Port = attr.Value.AsInt64()
		case "http.method":
			//mNode.MethodName += " " + attr.Value.AsString()
			method = attr.Value.AsString()
			//descAddr += ":" + attr.Value.AsString()
		case "http.uri":
			mNode.Uri = attr.Value.AsString()
			//mNode.MethodName += " " + attr.Value.AsString()
		case "http.assumed_app_id":
			mNode.AssumedAppId = attr.Value.AsInt64()
		case "http.span_id":
			mNode.SpanId = attr.Value.AsString()
		case "time.start_at":
			mNode.StartTime = uint64(attr.Value.AsInt64())
		case "time.end_at":
			mNode.EndTime = uint64(attr.Value.AsInt64())
		case "time.duration":
			//mNode.PureTime = uint64(attr.Value.AsInt64()) / 1e3
			mNode.WallTime = uint64(attr.Value.AsInt64()) / 1e3
		case "http.src_addr":
			mNode.SrcAddr = attr.Value.AsString()
		case "http.destination_addr":
			mNode.DestinationAddr = attr.Value.AsString()
		case "http.is_tls":
			if attr.Value.AsBool() {
				mNode.Schema = "https"
			}
		}
	}
	mNode.MethodName = fmt.Sprintf("%s %s %s:%d%s", "HTTP", method, mNode.Ip, mNode.Port, mNode.Uri)
	//mNode.AssumedAppId = Md5ToInt64(descAddr, 16)
}

//func buildMysqlMap(mNode *MapInfoT, sd apmTraceSpan) {
//	mNode.Dbn = "unknown"
//	mNode.ServiceName = MYSQL_SERVICE_NAME
//	mNode.ServiceType = SQL_SERVICE_TYPE
//	mNode.MethodName = "database/sql.Query()"
//	for _, attr := range sd.Attributes() {
//		//fmt.Println(attr.Key, ":", attr.Value.AsInterface())
//		switch attr.Key {
//		case "net.peer.name":
//			mNode.Ip = attr.Value.AsString()
//		case "net.peer.port":
//			mNode.Port = attr.Value.AsInt64()
//		case "db.statement":
//			query := attr.Value.AsString()
//			mNode.Ps = []string{query}
//			words := strings.Fields(query)
//			if len(words) > 0 {
//				mNode.OperType = strings.ToUpper(words[0])
//			}
//		}
//	}
//}

func buildSQLMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.Dbn = "-"
	mNode.ServiceName = l7.Protocol(event.ProtocolType).ServiceNameString()
	mNode.ServiceType = SQL_SERVICE_TYPE
	//mNode.MethodName = "database/sql.Query()"
	for _, attr := range event.Attributes {
		//fmt.Println(attr.Key, ":", attr.Value.AsInterface())
		switch attr.Key {
		case "net.peer.name":
			mNode.Ip = attr.Value.AsString()
		case "net.peer.port":
			mNode.Port = attr.Value.AsInt64()
		case "db.statement":
			query := attr.Value.AsString()
			mNode.MethodName = query
			mNode.Ps = []string{query}
			//words := strings.Fields(query)
			//if len(words) > 0 {
			//	mNode.OperType = strings.ToUpper(words[0])
			//}
		case "sql.exception":
			if attr.Value.AsBool() {
				mNode.Exception = 1
			} else {
				mNode.Exception = 0
			}
		case "sql.exception_msg":
			mNode.ExceptionMsg = attr.Value.AsString()
		case "sql.src_addr":
			mNode.SrcAddr = attr.Value.AsString()
		case "sql.destination_addr":
			mNode.DestinationAddr = attr.Value.AsString()
		case "sql.dbn":
			mNode.Dbn = attr.Value.AsString()
		}
	}
}

func buildDNSMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.ServiceName = l7.Protocol(event.ProtocolType).ServiceNameString()
	mNode.ServiceType = NET_SERVICE_TYPE
	var _type string
	var fqdn string
	var ips string
	var ttl int64
	for _, attr := range event.Attributes {
		switch attr.Key {
		case "dns.type":
			_type = attr.Value.AsString()
		case "dns.fqdn":
			fqdn = attr.Value.AsString()
		case "dns.ttl":
			ttl = attr.Value.AsInt64()
		case "dns.ips":
			if attr.Value.AsString() != "" {
				ips = "Addr: " + attr.Value.AsString()
			}
		}
	}
	mNode.MethodName = fmt.Sprintf("DNS Name: %s  Type: %s  TTL: %d  %s", fqdn, _type, ttl, ips)
}

func buildPostGreSqlMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.Dbn = "-"
	mNode.ServiceName = POSTGRESQL_SERVICE_NAME
	mNode.ServiceType = SQL_SERVICE_TYPE
	//mNode.MethodName = "database/sql.Query()"
	for _, attr := range event.Attributes {
		//fmt.Println(attr.Key, ":", attr.Value.AsInterface())
		switch attr.Key {
		case "net.peer.name":
			mNode.Ip = attr.Value.AsString()
		case "net.peer.port":
			mNode.Port = attr.Value.AsInt64()
		case "db.statement":
			query := attr.Value.AsString()
			mNode.Ps = []string{query}
			//words := strings.Fields(query)
			//if len(words) > 0 {
			//	mNode.OperType = strings.ToUpper(words[0])
			//}
		case "sql.exception":
			if attr.Value.AsBool() {
				mNode.Exception = 1
			} else {
				mNode.Exception = 0
			}
		case "sql.src_addr":
			mNode.SrcAddr = attr.Value.AsString()
		case "sql.destination_addr":
			mNode.DestinationAddr = attr.Value.AsString()
		}
	}
}

func buildMysqlMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.Dbn = "-"
	mNode.ServiceName = MYSQL_SERVICE_NAME
	mNode.ServiceType = SQL_SERVICE_TYPE
	//mNode.MethodName = "database/sql.Query()"
	for _, attr := range event.Attributes {
		//fmt.Println(attr.Key, ":", attr.Value.AsInterface())
		switch attr.Key {
		case "net.peer.name":
			mNode.Ip = attr.Value.AsString()
		case "net.peer.port":
			mNode.Port = attr.Value.AsInt64()
		case "db.statement":
			query := attr.Value.AsString()
			mNode.MethodName = query
			mNode.Ps = []string{query}
			//words := strings.Fields(query)
			//if len(words) > 0 {
			//	mNode.OperType = strings.ToUpper(words[0])
			//}
		case "sql.exception":
			if attr.Value.AsBool() {
				mNode.Exception = 1
			} else {
				mNode.Exception = 0
			}
		case "sql.src_addr":
			mNode.SrcAddr = attr.Value.AsString()
		case "sql.destination_addr":
			mNode.DestinationAddr = attr.Value.AsString()
		}
	}
}

func buildDMMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.Dbn = "TEST"
	mNode.ServiceName = DM_SERVICE_NAME
	mNode.ServiceType = SQL_SERVICE_TYPE
	mNode.MethodName = "database/sql.Query()"
	for _, attr := range event.Attributes {
		//fmt.Println(attr.Key, ":", attr.Value.AsInterface())
		switch attr.Key {
		case "net.peer.name":
			mNode.Ip = attr.Value.AsString()
		case "net.peer.port":
			mNode.Port = attr.Value.AsInt64()
		case "db.statement":
			query := attr.Value.AsString()
			mNode.Ps = []string{query}
			//words := strings.Fields(query)
			//if len(words) > 0 {
			//	mNode.OperType = strings.ToUpper(words[0])
			//}
		case "sql.exception":
			if attr.Value.AsBool() {
				mNode.Exception = 1
			} else {
				mNode.Exception = 0
			}
		case "sql.src_addr":
			mNode.SrcAddr = attr.Value.AsString()
		case "sql.destination_addr":
			mNode.DestinationAddr = attr.Value.AsString()
		}
	}
}

func buildNoSqlMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.ServiceName = l7.Protocol(event.ProtocolType).ServiceNameString()
	mNode.ServiceType = NOSQL_SERVICE_TYPE
	for _, attr := range event.Attributes {
		switch attr.Key {
		case "net.peer.name":
			mNode.Ip = attr.Value.AsString()
		case "net.peer.port":
			mNode.Port = attr.Value.AsInt64()
		case "db.statement":
			query := attr.Value.AsString()
			mNode.MethodName = query
			mNode.Ps = []string{query}
		case "nosql.src_addr":
			mNode.SrcAddr = attr.Value.AsString()
		case "nosql.destination_addr":
			mNode.DestinationAddr = attr.Value.AsString()
		case "nosql.exception":
			if attr.Value.AsBool() {
				mNode.Exception = 1
			}
		case "nosql.exception_msg":
			mNode.ExceptionMsg = attr.Value.AsString()
		}
	}
}

func buildMQMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.ServiceName = l7.Protocol(event.ProtocolType).ServiceNameString()
	mNode.ServiceType = MQ_SERVICE_TYPE
	for _, attr := range event.Attributes {
		switch attr.Key {
		case "net.peer.name":
			mNode.Ip = attr.Value.AsString()
		case "net.peer.port":
			mNode.Port = attr.Value.AsInt64()
		case "mq.info":
			query := attr.Value.AsString()
			mNode.MethodName = query
		case "mq.topic":
			mNode.Uri = "/" + attr.Value.AsString()
		case "mq.destination_addr":
			mNode.DestinationAddr = attr.Value.AsString()
		case "mq.exception":
			if attr.Value.AsBool() {
				mNode.Exception = 1
			}
		case "mq.exception_msg":
			mNode.ExceptionMsg = attr.Value.AsString()
		case "mq.oper_type":
			mNode.OperType = attr.Value.AsString()
		case "mq.assumed_app_id":
			mNode.AssumedAppId = attr.Value.AsInt64()
		case "mq.span_id":
			mNode.SpanId = attr.Value.AsString()
		}
	}
}

func buildMongoMapEvent(mNode *MapInfoT, event tracesdk.Event) {
	mNode.ServiceName = MONGO_SERVICE_NAME
	mNode.ServiceType = NOSQL_SERVICE_TYPE
	for _, attr := range event.Attributes {
		switch attr.Key {
		case "net.peer.name":
			mNode.Ip = attr.Value.AsString()
		case "net.peer.port":
			mNode.Port = attr.Value.AsInt64()
		case "db.statement":
			query := attr.Value.AsString()
			mNode.MethodName = query
			mNode.Ps = []string{query}
		case "nosql.src_addr":
			mNode.SrcAddr = attr.Value.AsString()
		case "nosql.destination_addr":
			mNode.DestinationAddr = attr.Value.AsString()
		}
	}
}

func isEnter(_type string) bool {
	if _type == "APPLICATION" {
		return true
	}
	return false
}

func span(sd apmTraceSpan) *tracepb.Span {
	if sd == nil {
		return nil
	}

	tid := sd.SpanContext().TraceID()
	sid := sd.SpanContext().SpanID()

	s := &tracepb.Span{
		TraceId:    tid[:],
		SpanId:     sid[:],
		TraceState: sd.SpanContext().TraceState().String(),
		//Status:                 status(sd.Status().Code, sd.Status().Description),
		StartTimeUnixNano: uint64(sd.StartTime().UnixNano()),
		EndTimeUnixNano:   uint64(sd.EndTime().UnixNano()),
		//Links:                  links(sd.Links()),
		//Kind:                   spanKind(sd.SpanKind()),
		Name:       sd.Name(),
		Attributes: tracetransform.KeyValues(sd.Attributes()),
		//Events:                 spanEvents(sd.Events()),
		DroppedAttributesCount: uint32(sd.DroppedAttributes()),
		DroppedEventsCount:     uint32(sd.DroppedEvents()),
		DroppedLinksCount:      uint32(sd.DroppedLinks()),
	}

	if psid := sd.Parent().SpanID(); psid.IsValid() {
		s.ParentSpanId = psid[:]
	}

	return s
}

func Md5ToInt64(strParam string, Len int) int64 {
	sign := md5.Sum([]byte(strParam))
	signStr := fmt.Sprintf("%x", sign)
	charArr := []rune(signStr)
	var intStr string
	for _, value := range charArr {
		intStr += strconv.Itoa(int(value))
	}
	intStr = intStr[:Len]
	int64Data, err := strconv.ParseInt(intStr, 10, 64)
	if err != nil {
		return 0
	}
	return int64Data
}

// ns,ms
func cleanNsTime(time int64) (uint64, uint64) {
	return uint64(time), uint64(math.Round(float64(time) / 1e6))
}

func parseLen2(s string, i int) (int, bool) {
	if len(s) < i+2 {
		return 0, false
	}
	c1, c2 := s[i], s[i+1]
	if c1 < '0' || c1 > '9' || c2 < '0' || c2 > '9' {
		return 0, false
	}
	return int(c1-'0')*10 + int(c2-'0'), true
}

func parseSysvcFrom(sysvcFrom string) (string, string, string) {
	// 新格式：{app_name_len}:app_name:{appServiceType_len}:appServiceType[:{SysTagLen}:SysTag]
	// 例如：08:eBPF-APP:12:APPLICATION 或 08:eBPF-APP:12:APPLICATION:03:tag
	// 最小长度：12 (如 "08:x:12:APPLICATION")
	if len(sysvcFrom) < 12 {
		return "", "", ""
	}

	// 解析 app_name_len（前2位）
	appNameLen, ok := parseLen2(sysvcFrom, 0)
	if !ok || appNameLen < 0 || appNameLen > 32 {
		return "", "", ""
	}

	// 检查第一个冒号
	if len(sysvcFrom) < 3 || sysvcFrom[2] != ':' {
		return "", "", ""
	}

	// 提取 app_name（从位置 3 开始，长度为 appNameLen）
	appNameStart := 3
	appNameEnd := appNameStart + appNameLen
	if len(sysvcFrom) < appNameEnd {
		return "", "", ""
	}
	appNameFrom := sysvcFrom[appNameStart:appNameEnd]

	// 检查 app_name 后的冒号
	if len(sysvcFrom) < appNameEnd+1 || sysvcFrom[appNameEnd] != ':' {
		return appNameFrom, "", ""
	}

	// 解析 appServiceType_len（app_name 后的2位）
	appServiceTypeLenStart := appNameEnd + 1
	appServiceTypeLen, ok := parseLen2(sysvcFrom, appServiceTypeLenStart)
	if !ok || appServiceTypeLen < 0 || appServiceTypeLen > 32 {
		return appNameFrom, "", ""
	}

	// 检查 appServiceType_len 后的冒号
	appServiceTypeStart := appServiceTypeLenStart + 2
	if len(sysvcFrom) < appServiceTypeStart+1 || sysvcFrom[appServiceTypeStart] != ':' {
		return appNameFrom, "", ""
	}

	// 提取 appServiceType
	appServiceTypeStart++
	appServiceTypeEnd := appServiceTypeStart + appServiceTypeLen
	if len(sysvcFrom) < appServiceTypeEnd {
		return appNameFrom, "", ""
	}
	serviceTypeFrom := sysvcFrom[appServiceTypeStart:appServiceTypeEnd]

	// 检查 appServiceType 后的冒号
	if len(sysvcFrom) < appServiceTypeEnd+1 || sysvcFrom[appServiceTypeEnd] != ':' {
		return appNameFrom, serviceTypeFrom, ""
	}

	// 解析 sysTagLen（appServiceType 后的2位）
	sysTagLenStart := appServiceTypeEnd + 1
	sysTagLen, ok := parseLen2(sysvcFrom, sysTagLenStart)
	if !ok || sysTagLen < 0 || sysTagLen > 32 {
		return appNameFrom, serviceTypeFrom, ""
	}

	// 如果 sysTagLen == 0，则没有 sysTag
	if sysTagLen == 0 {
		return appNameFrom, serviceTypeFrom, ""
	}

	// 检查 sysTagLen 后的冒号
	sysTagStart := sysTagLenStart + 2
	if len(sysvcFrom) < sysTagStart+1 || sysvcFrom[sysTagStart] != ':' {
		return appNameFrom, serviceTypeFrom, ""
	}

	// 提取 sysTag
	sysTagStart++
	sysTagEnd := sysTagStart + sysTagLen
	if len(sysvcFrom) < sysTagEnd {
		return appNameFrom, serviceTypeFrom, ""
	}
	parentSys := sysvcFrom[sysTagStart:sysTagEnd]

	return appNameFrom, serviceTypeFrom, parentSys
}