init commit

gate-hk4e/net/proto_endecode.go

@@ -0,0 +1,160 @@
+package net
+
+import (
+	"flswld.com/gate-hk4e-api/proto"
+	"flswld.com/logger"
+	pb "google.golang.org/protobuf/proto"
+)
+
+type ProtoEnDecode struct {
+	apiProtoMap *proto.ApiProtoMap
+}
+
+func NewProtoEnDecode() (r *ProtoEnDecode) {
+	r = new(ProtoEnDecode)
+	r.apiProtoMap = proto.NewApiProtoMap()
+	return r
+}
+
+type ProtoMsg struct {
+	ConvId         uint64
+	ApiId          uint16
+	HeadMessage    *proto.PacketHead
+	PayloadMessage pb.Message
+}
+
+type ProtoMessage struct {
+	apiId   uint16
+	message pb.Message
+}
+
+func (p *ProtoEnDecode) protoDecode(kcpMsg *KcpMsg) (protoMsgList []*ProtoMsg) {
+	protoMsgList = make([]*ProtoMsg, 0)
+	protoMsg := new(ProtoMsg)
+	protoMsg.ConvId = kcpMsg.ConvId
+	protoMsg.ApiId = kcpMsg.ApiId
+	// head msg
+	if kcpMsg.HeadData != nil && len(kcpMsg.HeadData) != 0 {
+		headMsg := new(proto.PacketHead)
+		err := pb.Unmarshal(kcpMsg.HeadData, headMsg)
+		if err != nil {
+			logger.LOG.Error("unmarshal head data err: %v", err)
+			return protoMsgList
+		}
+		protoMsg.HeadMessage = headMsg
+	} else {
+		protoMsg.HeadMessage = nil
+	}
+	// payload msg
+	protoMessageList := make([]*ProtoMessage, 0)
+	p.protoDecodePayloadCore(kcpMsg.ApiId, kcpMsg.ProtoData, &protoMessageList)
+	if len(protoMessageList) == 0 {
+		logger.LOG.Error("decode proto object is nil")
+		return protoMsgList
+	}
+	if kcpMsg.ApiId == proto.ApiUnionCmdNotify {
+		for _, protoMessage := range protoMessageList {
+			msg := new(ProtoMsg)
+			msg.ConvId = kcpMsg.ConvId
+			msg.ApiId = protoMessage.apiId
+			msg.HeadMessage = protoMsg.HeadMessage
+			msg.PayloadMessage = protoMessage.message
+			//logger.LOG.Debug("[recv] union proto msg, convId: %v, apiId: %v", msg.ConvId, msg.ApiId)
+			if protoMessage.apiId == proto.ApiUnionCmdNotify {
+				// 聚合消息自身不再往后发送
+				continue
+			}
+			//logger.LOG.Debug("[recv] proto msg, convId: %v, apiId: %v, headMsg: %v", protoMsg.ConvId, protoMsg.ApiId, protoMsg.HeadMessage)
+			protoMsgList = append(protoMsgList, msg)
+		}
+		// 聚合消息自身不再往后发送
+		return protoMsgList
+	} else {
+		protoMsg.PayloadMessage = protoMessageList[0].message
+	}
+	//logger.LOG.Debug("[recv] proto msg, convId: %v, apiId: %v, headMsg: %v", protoMsg.ConvId, protoMsg.ApiId, protoMsg.HeadMessage)
+	protoMsgList = append(protoMsgList, protoMsg)
+	return protoMsgList
+}
+
+func (p *ProtoEnDecode) protoDecodePayloadCore(apiId uint16, protoData []byte, protoMessageList *[]*ProtoMessage) {
+	protoObj := p.decodePayloadToProto(apiId, protoData)
+	if protoObj == nil {
+		logger.LOG.Error("decode proto object is nil")
+		return
+	}
+	if apiId == proto.ApiUnionCmdNotify {
+		// 处理聚合消息
+		unionCmdNotify, ok := protoObj.(*proto.UnionCmdNotify)
+		if !ok {
+			logger.LOG.Error("parse union cmd error")
+			return
+		}
+		for _, cmd := range unionCmdNotify.GetCmdList() {
+			p.protoDecodePayloadCore(uint16(cmd.MessageId), cmd.Body, protoMessageList)
+		}
+	}
+	*protoMessageList = append(*protoMessageList, &ProtoMessage{
+		apiId:   apiId,
+		message: protoObj,
+	})
+}
+
+func (p *ProtoEnDecode) protoEncode(protoMsg *ProtoMsg) (kcpMsg *KcpMsg) {
+	//logger.LOG.Debug("[send] proto msg, convId: %v, apiId: %v, headMsg: %v", protoMsg.ConvId, protoMsg.ApiId, protoMsg.HeadMessage)
+	kcpMsg = new(KcpMsg)
+	kcpMsg.ConvId = protoMsg.ConvId
+	kcpMsg.ApiId = protoMsg.ApiId
+	// head msg
+	if protoMsg.HeadMessage != nil {
+		headData, err := pb.Marshal(protoMsg.HeadMessage)
+		if err != nil {
+			logger.LOG.Error("marshal head data err: %v", err)
+			return nil
+		}
+		kcpMsg.HeadData = headData
+	} else {
+		kcpMsg.HeadData = nil
+	}
+	// payload msg
+	if protoMsg.PayloadMessage != nil {
+		apiId, protoData := p.encodeProtoToPayload(protoMsg.PayloadMessage)
+		if apiId == 0 || protoData == nil {
+			logger.LOG.Error("encode proto data is nil")
+			return nil
+		}
+		if apiId != 65535 && apiId != protoMsg.ApiId {
+			logger.LOG.Error("api id is not match with proto obj, src api id: %v, found api id: %v", protoMsg.ApiId, apiId)
+			return nil
+		}
+		kcpMsg.ProtoData = protoData
+	} else {
+		kcpMsg.ProtoData = nil
+	}
+	return kcpMsg
+}
+
+func (p *ProtoEnDecode) decodePayloadToProto(apiId uint16, protoData []byte) (protoObj pb.Message) {
+	protoObj = p.apiProtoMap.GetProtoObjByApiId(apiId)
+	if protoObj == nil {
+		logger.LOG.Error("get new proto object is nil")
+		return nil
+	}
+	err := pb.Unmarshal(protoData, protoObj)
+	if err != nil {
+		logger.LOG.Error("unmarshal proto data err: %v", err)
+		return nil
+	}
+	return protoObj
+}
+
+func (p *ProtoEnDecode) encodeProtoToPayload(protoObj pb.Message) (apiId uint16, protoData []byte) {
+	apiId = p.apiProtoMap.GetApiIdByProtoObj(protoObj)
+	var err error = nil
+	protoData, err = pb.Marshal(protoObj)
+	if err != nil {
+		logger.LOG.Error("marshal proto object err: %v", err)
+		return 0, nil
+	}
+	return apiId, protoData
+}