package main
import (
"os"
"fmt"
"net/http"
)
type nodeINfo struct {
// 节点名称
id string
//节点路径
path string
// http 相应
write http.ResponseWriter
}
// 创建map,存储各个国家的ip地址
var nodeTable = make(map[string]string)
func main() {
// 接收终端参数
userId := os.Args[1]
fmt.Println(userId)
// 存储四个国家的ip地址
nodeTable = map[string]string{
"Apple" :"localhost:1111",
"MS" :"localhost:1112",
"Google" :"localhost:1113",
"IBM" :"localhost:1114",
}
// 创建国家对象
node := nodeINfo{id:userId,path:nodeTable[userId]}
// http协议的回掉函数
// http://localhost:1111/req?warTime =1111
http.HandleFunc("/req",node.request)
http.HandleFunc("/prePrepare",node.prePrepare)
if err:=http.ListenAndServe(node.path,nil);err!=nil {
fmt.Println(err)
}
}
// http服务器,接收到网络请求并且。req则回掉request
func (node *nodeINfo)request(writer http.ResponseWriter,request *http.Request) {
// 该命令允许request请求参数
request.ParseForm()
if (len(request.Form["warTime"])>0) {
node.write =writer
fmt.Println("主节点接收到的参数信息为",request.Form["warTime"][0])
// 激活主节点后向其他的节点发送广播
node.broadcast(request.Form["warTime"][0],"/prePrepare")
}
}
// 节点发送广播的方法
func (node *nodeINfo)broadcast(msg string,path string) {
fmt.Println("广播",path)
// 遍历所有的节点
for nodeId,url :=range nodeTable {
if nodeId== node.id{
continue
}
// 使当前节点外的节点作出相应
http.Get("http://"+url+path+"?warTime="+msg+"&nodeId="+node.id)
}
}
//处理广播后接收到的数据
func (node *nodeINfo)prePrepare(writer http.ResponseWriter,request *http.Request) {
request.ParseForm()
fmt.Println("接收到的广播为",request.Form["warTime"][0])
}
// 主节点是apple 会分发给其余的节点信息
// 启动一个网页服务例如http://localhost:1111/req?warTime=1111
在命令行执行
./main.go:7:2: imported and not used: "go/types"
./main.go:8:2: imported and not used: "io"
FairyMacBook-Pro:BFT zhaoran$ go build main.go
FairyMacBook-Pro:BFT zhaoran$ ./main Apple
Apple
主节点接收到的参数信息为 1111
FairyMacBook-Pro:BFT zhaoran$ go build main.go
command-line-arguments
./main.go:8:2: imported and not used: "io"
FairyMacBook-Pro:BFT zhaoran$ go build main.go
FairyMacBook-Pro:BFT zhaoran$ ./main Apple
Apple
主节点接收到的参数信息为 1111
广播 /prePrepare
其余的节点执行:
Last login: Wed May 23 14:15:12 on ttys000
FairyMacBook-Pro:BFT zhaoran$ ./main MS
MS
接收到的广播为 1111
/*
其余的相当于执行如下代码
go build main.go
./main Apple
./main IBM
./main MS
./main Google
开了四个服务器
*/
主服务器分发图: