func (mul *Multicast) SendJoinRequest(dest, group, invite_code string) {
addr := announce_client.GetInfo(dest)
mul.Info.AddrMap[dest] = addr.IP.String() + ":9200"
str := group + ",,," + invite_code
fmt.Println(str)
mul.SendUniMessage("join_request", str, dest, 5000)
}
func (mul *Multicast) rcvFromFront() {
for {
m := <-MessageQueue
b := m.Body
group := b.CalendarName
if m.Mtype == "request_CS" {
mul.LockRequest(group)
} else if m.Mtype == "release_CS" {
mul.LockRelease(group)
} else if m.Mtype == "operation" {
str := "Btype--" + b.Btype + ",,," + "Name--" + b.CalendarName + ",,," + "Text--" + b.Text
mul.UpdateSend(group, str)
} else if m.Mtype == "join_request_to_back" {
a := strings.Split(b.Text, ",,,")
dest := a[0]
invite_code := a[1]
addr := announce_client.GetInfo(dest)
mul.Info.AddrMap[dest] = addr.IP.String() + ":9200"
mul.SendJoinRequest(dest, group, invite_code)
} else if m.Mtype == "vote_request" {
mem := b.Text //who wants to join
mul.VoteRequest(mem, group)
} else if m.Mtype == "vote_reply" {
dest := b.Btype
decision := b.Text
mul.VoteReply(dest, decision)
} else if m.Mtype == "add_group" {
mul.AddGroup(group)
} else {
}
}
}
//initialize all variables
func (c *CalendarInfo) Init() {
c.Hostname = cryptowrapper.GetLocalFingerPrint()
fmt.Println("fingerprint:" + c.Hostname)
//c.Hostname = name
c.GroupMember = make(map[string]map[string]int)
c.RcvQueue = make(chan customtypes.TsMessage, 1024)
c.AddrMap = make(map[string]string)
// c.GroupMember["group1"] = make(map[string]int)
// c.GroupMember["group2"] = make(map[string]int)
// c.GroupMember["group1"]["a"]=0
// c.GroupMember["group1"]["b"]=1
// c.GroupMember["group1"]["c"]=2
// c.GroupMember["group2"]["b"]=0
// c.GroupMember["group2"]["c"]=1
c.ReadFromFile("config.txt")
announce_client.AnnounceMyPresence()
addr := announce_client.GetInfo(c.Hostname)
c.AddrMap[c.Hostname] = addr.IP.String() + ":9200"
ipMap := make(map[string]*net.TCPAddr)
for _, ms := range c.GroupMember {
for m, _ := range ms {
_, ok := ipMap[m]
if !ok {
ipMap[m] = nil
}
}
}
announce_client.GetInfoStruct(ipMap) //map[string]string
for mem, ip := range ipMap {
c.AddrMap[mem] = ip.IP.String() + ":9200"
}
// c.AddrMap["a"]="127.0.0.1:1234"
// c.AddrMap["b"]="127.0.0.1:1235"
// c.AddrMap["c"]="127.0.0.1:1236"
}
func (mul *Multicast) VoteRcv() {
for {
rcv := <-mul.VoteQueue
fmt.Println(rcv.Group + " " + rcv.Src + " " + rcv.Kind + " " + rcv.Content)
if rcv.Kind == "vote_decision" {
fmt.Println("vote_decison: " + rcv.Src + " " + rcv.Kind + " " + rcv.Content)
//voteGroup+" "+voteMem+" "+mul.Info.AddrMap[voteMem]
arr := strings.Split(rcv.Content, " ")
group := arr[0]
mem := arr[1]
ip := arr[2]
mul.Info.AddMember(group, mem, ip)
fmt.Println(mem + " joins " + group)
mul.Info.WriteToFile("config.txt")
//notify front end
text := "Approved: " + mem + " joins " + group
b := calendar.Frontmessage{
Btype: "",
CalendarName: group,
Text: text,
}
mf := &calendar.Message{
Mtype: "vote_decision",
Body: &b,
}
// mul.ToFront <- mf
ToFront(mf)
} else if rcv.Kind == "vote_request" {
arr := strings.Split(rcv.Content, " ")
mem := arr[0]
group := arr[1]
fmt.Println("receive vote request: " + mem + " joins " + group)
// reader := bufio.NewReader(os.Stdin)
// commands, _ := reader.ReadString('\n');
// decision:=strings.Trim(commands, "\n")
fmt.Println(rcv.Src + " yes")
// mul.VoteReply(rcv.Src, "yes")
// //notify front end
text := mem + " wants to join " + group
b := calendar.Frontmessage{
Btype: rcv.Src,
CalendarName: group,
Text: text,
}
mf := &calendar.Message{
Mtype: "vote_request_to_front",
Body: &b,
}
// mul.ToFront <- mf
ToFront(mf)
} else if rcv.Kind == "vote_reply" {
countVote++
if rcv.Content == "yes" {
countYes++
}
if countVote == groupSize {
var decision string
if countYes >= (groupSize-1)/2 {
decision = "yes"
mul.SendMulticast("vote_decision", voteGroup+" "+voteMem+" "+mul.Info.AddrMap[voteMem], voteGroup, 5000)
size := len(mul.Info.GroupMember[voteGroup])
mul.Info.GroupMember[voteGroup][voteMem] = size
fmt.Println("----------")
fmt.Println(mul.Info.GroupMember[voteGroup])
mul.SendInfo(voteGroup, voteMem)
// //notify
text := "Approved: " + voteMem + " joins " + voteGroup
b := calendar.Frontmessage{
Btype: "",
CalendarName: voteGroup,
Text: text,
}
mf := &calendar.Message{
Mtype: "vote_decision",
Body: &b,
}
// mul.ToFront <- mf
ToFront(mf)
} else {
decision = "no"
}
fmt.Println(decision)
mul.SendUniMessage("join_reply", voteGroup+" "+decision, voteMem, 5000)
}
} else if rcv.Kind == "join_reply" {
//receive info about the group
//notify front end
arr := strings.Split(rcv.Content, " ")
mem := mul.Info.Hostname
group := arr[0]
decision := arr[1]
var text string
if decision == "yes" {
text = "Approved: " + mem + " joins " + group
} else {
text = "Denied: " + mem + " joins " + group
}
fmt.Println(text)
b := calendar.Frontmessage{
Btype: "",
CalendarName: group,
Text: text,
}
mf := &calendar.Message{
Mtype: "join_reply",
Body: &b,
}
// mul.ToFront <- mf
ToFront(mf)
} else if rcv.Kind == "join_request" {
addr := announce_client.GetInfo(rcv.Src)
mul.Info.AddrMap[rcv.Src] = addr.IP.String() + ":9200"
arr := strings.Split(rcv.Content, ",,,")
group := arr[0]
invite_code := arr[1]
text := rcv.Src + " wants to join " + group
fmt.Println(text + "invite_code:" + invite_code)
b := calendar.Frontmessage{
Btype: "",
CalendarName: group,
Text: text,
}
mf := &calendar.Message{
Mtype: "join_request_to_front",
Body: &b,
}
// mul.ToFront <- mf
ToFront(mf)
if len(mul.Info.GroupMember[group]) == 1 {
decision := "yes"
size := len(mul.Info.GroupMember[group])
mul.Info.GroupMember[group][rcv.Src] = size
member := rcv.Src
fmt.Println("send decision:" + group + " " + member + " " + mul.Info.AddrMap[member])
fmt.Println(mul.Info.Hostname)
mul.SendUniMessage("vote_decision", group+" "+member+" "+mul.Info.AddrMap[member], mul.Info.Hostname, 5000)
fmt.Println(member + " " + decision)
mul.SendUniMessage("join_reply", group+" "+decision, member, 5000)
mul.SendInfo(group, member)
}
} else {
//error
}
}
}