You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
2.4 KiB
119 lines
2.4 KiB
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"math/rand"
|
|
"time"
|
|
)
|
|
|
|
type Node struct {
|
|
ip int
|
|
leader bool
|
|
reciveBlock chan string
|
|
sendBlock chan string
|
|
}
|
|
|
|
type Nodes struct {
|
|
Nodes []*Node
|
|
}
|
|
|
|
func randomInt(min, max int) int {
|
|
return min + rand.Intn(max-min)
|
|
}
|
|
|
|
// Generate a random string of A-Z chars with len = l
|
|
func randomString(len int) string {
|
|
bytes := make([]byte, len)
|
|
for i := 0; i < len; i++ {
|
|
bytes[i] = byte(randomInt(97, 122))
|
|
}
|
|
return string(bytes)
|
|
}
|
|
|
|
func (n Node) send(cin <-chan string, id int) {
|
|
for msg := range cin {
|
|
fmt.Printf("Leader has sent message %s to %d\n", msg, id)
|
|
}
|
|
}
|
|
|
|
func consume(cin <-chan string, id int) {
|
|
for msg := range cin {
|
|
fmt.Printf("Leader has sent message %s to %d\n", msg, id)
|
|
}
|
|
}
|
|
|
|
func (n Node) receive() {
|
|
fmt.Printf("Node: %d received message\n", n.ip)
|
|
}
|
|
|
|
func createNode(ip int, isLeader bool) Node {
|
|
n := Node{ip: ip, leader: isLeader}
|
|
return n
|
|
}
|
|
|
|
func pickLeader(i int) Node {
|
|
if i == 0 {
|
|
return createNode(i, true)
|
|
} else {
|
|
return createNode(i, false)
|
|
}
|
|
}
|
|
|
|
func BufferedTxnQueueWithFanOut(ch <-chan string, size int) []chan string { // This needs
|
|
cs := make([]chan string, size)
|
|
for i, _ := range cs {
|
|
// The size of the channels buffer controls how far behind the recievers
|
|
// of the fanOut channels can lag the other channels.
|
|
cs[i] = make(chan string)
|
|
}
|
|
go func() {
|
|
for txs := range ch {
|
|
for _, c := range cs {
|
|
c <- txs
|
|
}
|
|
}
|
|
for _, c := range cs {
|
|
// close all our fanOut channels when the input channel is exhausted.
|
|
close(c)
|
|
}
|
|
}()
|
|
return cs
|
|
}
|
|
|
|
func TxnGenerator(numOfTxns int, lenOfRandomString int) <-chan string {
|
|
out := make(chan string)
|
|
go func() {
|
|
for i := 0; i < numOfTxns; i++ {
|
|
out <- randomString(lenOfRandomString)
|
|
fmt.Printf("Transaction Number %d\n", i)
|
|
//time.Sleep(2 * time.Second)
|
|
}
|
|
close(out)
|
|
}()
|
|
return out
|
|
}
|
|
|
|
func main() {
|
|
var (
|
|
//isLeader Node
|
|
numOfTxns = 1000
|
|
numOfNodes = 10
|
|
N = make([]Node, 10)
|
|
lenOfRandomString = 10
|
|
node_ips = []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
|
|
)
|
|
for i := range node_ips {
|
|
m := pickLeader(i)
|
|
N[i] = m
|
|
// if m.leader {
|
|
// isLeader := m
|
|
// }
|
|
}
|
|
txnqueue := TxnGenerator(numOfTxns, lenOfRandomString)
|
|
Txns := BufferedTxnQueueWithFanOut(txnqueue, numOfNodes)
|
|
for num := range Txns {
|
|
txn := Txns[num]
|
|
go consume(txn,num)
|
|
}
|
|
time.Sleep(60 * time.Second)
|
|
}
|
|
|