From 2a60b650785c02232a3048d7212a3cab68a4f658 Mon Sep 17 00:00:00 2001
From: free will <2647778488@qq.com>
Date: Sat, 7 May 2022 19:51:19 +0800
Subject: [PATCH] =?UTF-8?q?=E8=A1=A5=E5=85=85=E5=AE=9E=E7=8E=B0RoutingTabl?=
 =?UTF-8?q?eEntry?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 README.md                      |  10 +++
 extensions/TlvMlsrExtention.go |   2 +
 route/RoutingTableEntry.go     | 121 ++++++++++++++++++++++++++++++++-
 3 files changed, 131 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 39dd4eb..42ae0c0 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,16 @@ MLSR（MIN Link State Routing Protocol，多标识网络链路状态路由协议
 
 MLSR支持推式传输和拉式传输下的路由寻址。
 
+## 功能模块简述
+
+### LSA模块
+
+### LSDB模块
+
+### 路由表模块
+
+### NPT模块
+
 ## 开发规范
 ### 注释规范
 * 源代码文件抬头注明开发者、时间、版本、组织等信息，请参考较早提交的代码文件。
diff --git a/extensions/TlvMlsrExtention.go b/extensions/TlvMlsrExtention.go
index 1bad1f4..7c8bc92 100644
--- a/extensions/TlvMlsrExtention.go
+++ b/extensions/TlvMlsrExtention.go
@@ -38,5 +38,7 @@ const (
 	TlvMlsrRouteCost = 442
 	TlvMlsrNextHop = 443
 	TlvMlsrNextHopList = 444
+	TlvMlsrRoutingTableEntry = 445
+
 )
 
diff --git a/route/RoutingTableEntry.go b/route/RoutingTableEntry.go
index b5623f0..67de72c 100644
--- a/route/RoutingTableEntry.go
+++ b/route/RoutingTableEntry.go
@@ -8,9 +8,126 @@
 
 package route
 
-import "minlib/component"
+import (
+	"minlib/component"
+	"minlib/encoding"
+	"mlsr/extensions"
+)
 
+//
+//  RoutingTableEntry
+//  @Description: 路由表条目
+//
 type RoutingTableEntry struct {
 	m_destination *component.Identifier
-
+	NextHopList
 }
+
+//
+//  NewRoutingTableEntry
+//  @Description: 新建一个路由表条目
+//  @param dest
+//  @return *RoutingTableEntry
+//  @return error
+//
+func NewRoutingTableEntry(dest *component.Identifier) (*RoutingTableEntry,error) {
+	// todo: 判断dest是否格式有效
+	rte := new(RoutingTableEntry)
+	rte.m_destination=dest
+	return rte,nil
+}
+
+//
+//  GetDestination
+//  @Description: 获取目的路由器
+//  @receiver e
+//  @return *component.Identifier
+//
+func (e *RoutingTableEntry) GetDestination(dest *component.Identifier) *component.Identifier {
+	return e.m_destination
+}
+
+//
+//  SetDestination
+//  @Description: 设置目的路由器
+//  @receiver e
+//  @param dest
+//
+func (e *RoutingTableEntry) SetDestination(dest *component.Identifier) {
+	e.m_destination=dest
+}
+
+//
+//  WireEncode
+//  @Description: 线速编码
+//  @receiver l
+//  @param encoder
+//  @return int
+//  @return error
+//
+func (e *RoutingTableEntry) WireEncode(encoder *encoding.Encoder) (int,error) {
+	totalLength := 0
+	// TLV-Value
+	tmpLen,err := e.NextHopList.WireEncode(encoder)
+	if err != nil {
+		return 0, err
+	}
+	totalLength += tmpLen
+	tmpLen,err = e.m_destination.WireEncode(encoder)
+	if err != nil {
+		return 0, err
+	}
+	totalLength += tmpLen
+
+	// TLV-Length
+	tmpLen,err = encoder.PrependVarNumber(encoding.VlInt(totalLength))
+	if err != nil {
+		return 0, err
+	}
+	totalLength += tmpLen
+
+	// TLV-Type
+	tmpLen, err = encoder.PrependVarNumber(extensions.TlvMlsrRoutingTableEntry)
+	if err != nil {
+		return 0, err
+	}
+	totalLength += tmpLen
+
+	return totalLength,nil
+}
+
+//
+//  WireDecode
+//  @Description: 线速解码
+//  @receiver l
+//  @param block
+//  @return error
+//
+func (e *RoutingTableEntry) WireDecode(block *encoding.Block) error {
+	// 检查 TLV-TYPE 是否正确
+	if err := encoding.ExpectType(block.GetType(), extensions.TlvMlsrRoutingTableEntry); err != nil {
+		return err
+	}
+
+	// 首先解析子Block
+	if err := block.ParseSubElements(); err != nil {
+		return err
+	}
+
+	// 提取参数
+	for _, parameter := range block.GetSubElements(){
+		switch parameter.GetType() {
+		case encoding.TlvIdentifier:
+			iden:=component.Identifier{}
+			if err:= iden.WireDecode(parameter); err != nil {
+				return err
+			}
+			e.m_destination = &iden
+		case extensions.TlvMlsrNextHopList:
+			if err:= e.NextHopList.WireDecode(parameter); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
\ No newline at end of file