func main() {
var err error
const numArgs = 2
if len(os.Args) != numArgs {
fmt.Println("Usage: ./miner <hostport>")
return
}
hostport := os.Args[1]
fmt.Println(hostport)
params := lsp.NewParams()
lspClient, err = lsp.NewClient(hostport, params)
if err != nil {
fmt.Println("cannot craete client or connect to the server")
return
}
// send Join message to the server
joinMsg := bitcoin.NewJoin()
err = sendMessage(joinMsg)
if err != nil {
fmt.Println(err)
return
}
for {
buf, err := lspClient.Read()
if err != nil {
fmt.Println("connection lost when reading from server")
return
}
reqMsg := &bitcoin.Message{}
err = json.Unmarshal(buf, reqMsg)
if err != nil {
fmt.Println("error when unmarshalling message")
return
}
// calculate the minhash and nonce and send the result back to server
fmt.Println("calculating... ", reqMsg.Data, reqMsg.Lower, reqMsg.Upper)
hash, nonce := calculateMinHash(reqMsg.Data, reqMsg.Lower, reqMsg.Upper)
resultMsg := bitcoin.NewResult(hash, nonce)
fmt.Println("sending back result: ", hash, nonce)
sendMessage(resultMsg)
}
}
func (m *Miner) handleRequest(req *bitcoin.Message) {
go func() {
nonce := req.Lower
minHash := bitcoin.Hash(req.Data, nonce)
for n := req.Lower + 1; n <= req.Upper; n++ {
hash := bitcoin.Hash(req.Data, n)
if hash < minHash {
minHash = hash
nonce = n
}
}
m.write(bitcoin.NewResult(minHash, nonce))
}()
}
func main() {
const numArgs = 2
if len(os.Args) != numArgs {
fmt.Println("Usage: ./miner <hostport>")
return
}
c, neterr := lsp.NewClient(os.Args[1], lsp.NewParams())
if neterr != nil {
fmt.Println(neterr)
}
join := bitcoin.NewJoin()
buf, _ := json.Marshal(join)
err := c.Write(buf)
if err != nil {
c.Close()
}
for {
buf, err := c.Read()
if err != nil {
c.Close()
return
}
var request bitcoin.Message
json.Unmarshal(buf, &request)
var minValue uint64 = math.MaxUint64
var minIndex uint64
for i := request.Lower; i <= request.Upper; i++ {
res := bitcoin.Hash(request.Data, i)
if res < minValue {
minValue = res
minIndex = i
}
}
result := bitcoin.NewResult(minValue, minIndex)
buffer, _ := json.Marshal(result)
error := c.Write(buffer)
if error != nil {
c.Close()
return
}
}
}
func NewReducer() Reducer {
return func(partial []*TaskPartialResult, id RequestID) *TaskResult {
hash := partial[0].PartialResult.Hash
nonce := partial[0].PartialResult.Nonce
for _, pr := range partial {
if pr.PartialResult.Hash < hash {
hash = pr.PartialResult.Hash
nonce = pr.PartialResult.Nonce
}
}
return &TaskResult{
ID: id,
Result: bitcoin.NewResult(hash, nonce),
}
}
}
func main() {
const numArgs = 2
if len(os.Args) != numArgs {
fmt.Println("Usage: ./server <port>")
return
}
file, err := os.OpenFile(name, flag, perm)
if err != nil {
return
}
mlx := log.New(file, "", log.Lshortfile|log.Lmicroseconds)
port, _ := strconv.Atoi(os.Args[1])
s, err := lsp.NewServer(port, lsp.NewParams())
if err != nil {
mlx.Println("cant start server in the port")
file.Close()
return
}
yy := NewScheduler()
for {
select {
case <-yy.waitans:
if yy.jobgiveup == false {
res := bitcoin.NewResult(yy.ans1, yy.ans2)
buf, _ := json.Marshal(res)
mlx.Println("send ans to client: ", yy.curclient, res.String())
errr := s.Write(yy.curclient, buf)
if errr != nil {
mlx.Println("server write ans to client timeout")
}
}
yy.run = false
yy.currid += 1
if len(yy.pendjobs) != 0 && yy.currid < yy.reqct {
mlx.Println("there is jobs left begin to assign", yy.currid)
mlx.Println("move pend miner to miner")
yy.resize(mlx, s)
mlx.Println("-----")
yy.assign(mlx, s)
}
default:
id, v, err := s.Read()
if err != nil {
//mlx.Println(err)
_, ok1 := yy.miner[id]
if ok1 {
if yy.run {
mlx.Println("lost miner: ", id, " when running the job")
if yy.miner[id] != nil {
yy.pendrange[id] = yy.miner[id]
yy.minerfail += 1
delete(yy.miner, id)
yy.resize(mlx, s)
if len(yy.miner) != 0 {
yy.reassign(mlx, s)
}
continue
}
} else {
mlx.Println("lost miner: ", id, " when there is no job and miner wait for request")
delete(yy.miner, id)
continue
}
}
_, ok2 := yy.pendminer[id]
if ok2 {
mlx.Println("lost miner: ", id, " before assign job")
delete(yy.pendminer, id)
continue
}
if id == yy.curclient {
mlx.Println("lost the running client: ", id, " before return results, give up current job")
yy.jobgiveup = true
continue
} /*else {
if id < yy.curclient {
continue
}
mlx.Println("lost the unruning client: ", id, "before start its job")
pos := 0
for i, v := range yy.pendclients {
if pos == 0 {
if i == id {
pos = i
delete(yy.pendclients, i)
}
} else {
if i > pos {
delete(yy.pendclients, i)
yy.pendclients[i-1] = v
}
}
}
for i, v := range yy.pendjobs {
if i > pos {
delete(yy.pendjobs, i)
yy.pendjobs[i-1] = v
}
}
yy.reqct -= 1
}*/
} else {
msg := &bitcoin.Message{}
err = json.Unmarshal(v[:], msg)
mlx.Println(id, msg.String())
switch msg.Type {
case bitcoin.Join:
if yy.run {
yy.pendminer[id] = 0
yy.resize(mlx, s)
if len(yy.pendrange) != 0 {
yy.reassign(mlx, s)
}
} else {
yy.miner[id] = nil
if len(yy.pendrange) != 0 {
mlx.Println("request wait for miner for left job, miner come")
yy.reassign(mlx, s)
continue
}
if len(yy.pendclients) != 0 {
mlx.Println("request wait for miner, miner come")
yy.assign(mlx, s)
}
}
case bitcoin.Request:
mlx.Println("receive request form client:", id, msg.String())
if yy.run {
yy.pendclients[yy.reqct] = id
yy.pendjobs[yy.reqct] = msg
yy.reqct += 1
} else {
if len(yy.miner) != 0 {
yy.pendclients[yy.reqct] = id
yy.pendjobs[yy.reqct] = msg
yy.reqct += 1
mlx.Println("miner wait for request, client come")
yy.assign(mlx, s)
} else {
yy.pendclients[yy.reqct] = id
yy.pendjobs[yy.reqct] = msg
yy.reqct += 1
}
}
case bitcoin.Result:
mlx.Println("receive ans: ", msg.Hash, msg.Nonce)
if yy.run {
for i, v := range yy.miner {
if v == nil {
continue
}
mlx.Println("check miner: ", i, v.Lower, v.Upper)
if v != nil && msg.Nonce >= v.Lower && msg.Nonce <= v.Upper {
if msg.Hash < yy.ans1 {
yy.ans1 = msg.Hash
yy.ans2 = msg.Nonce
} else if msg.Hash == yy.ans1 {
if msg.Nonce < yy.ans2 {
yy.ans2 = msg.Nonce
}
}
yy.miner[i] = nil
yy.block -= 1
mlx.Println("left ", yy.block, " answers, now answer: ", yy.ans1, yy.ans2)
break
}
}
if yy.block == 0 {
//yy.ans1 = msg.Hash
//yy.ans2 = msg.Nonce
yy.waitans <- 1
continue
}
if yy.minerfail > 0 {
yy.reassign(mlx, s)
}
}
}
}
}
}
}
func main() {
const numArgs = 2
if len(os.Args) != numArgs {
fmt.Println("Usage: ./miner <hostport>")
return
}
file, err := os.OpenFile(name, flag, perm)
if err != nil {
return
}
mlx := log.New(file, "", log.Lshortfile|log.Lmicroseconds)
min, err := lsp.NewClient(os.Args[1], lsp.NewParams())
if err != nil {
mlx.Println("cant connect the server")
file.Close()
return
}
msg := bitcoin.NewJoin()
buf, _ := json.Marshal(msg)
hold := min.ConnID()
mlx.Println("get id: ", hold)
errr := min.Write(buf)
if errr != nil {
mlx.Println("write join fail")
min.Close()
file.Close()
return
} else {
mlx.Println("miner: ", hold, " write join done")
mlx.Println(msg.String())
}
for {
v, er := min.Read()
//mlx.Println("+++++")
if er != nil {
mlx.Println(er)
file.Close()
//min.Close()
return
}
msgg := &bitcoin.Message{}
err = json.Unmarshal(v[:], msgg)
mlx.Println("miner: ", hold, " read request->", msgg.String())
mes := msgg.Data
l := msgg.Lower
r := msgg.Upper
var hold, ans1, ans2 uint64
ans2 = 1<<64 - 1
ans1 = 1<<64 - 1
for i := l; i <= r; i++ {
hold = bitcoin.Hash(mes, i)
if hold < ans1 {
ans1 = hold
ans2 = i
} else if hold == ans1 {
if i < ans2 {
ans2 = i
}
}
}
res := bitcoin.NewResult(ans1, ans2)
buf, _ := json.Marshal(res)
errr := min.Write(buf)
if errr != nil {
mlx.Println("miner: ,", hold, " write ans timeout fail")
min.Close()
file.Close()
return
} else {
mlx.Println("miner: ", hold, " write ans done")
mlx.Println(msg.String())
}
}
}