Beispiel #1
0
func main() {
	flag.Parse()
	if *masterHostPort == "" && *port == 0 {
		// If masterHostPort string is empty, then this node is the master.
		*port = defaultMasterPort
	}
	// Create and start the paxos server
	var paxosBackend backend.Backend
	if *testing {
		paxosBackend = backend.NewStub()
	} else {
		paxosBackend, _ = backend.NewJeopardyServer()
	}
	var debug paxosrpc.Debug
	if *debugArgs == "none" {
		debug = paxosrpc.NONE
	} else if *debugArgs == "dropstart" {
		debug = paxosrpc.DROPSTART
	} else {
		debug = paxosrpc.DROPODD
	}
	_, err := paxos.NewPaxos(*masterHostPort, *numNodes, "localhost:"+strconv.Itoa(*port), *nodeID, *masterID, paxosBackend, debug)
	if err != nil {
		log.Fatalln("Failed to create Paxos node:", err)
	}
	// Run the node forever.
	select {}
}
Beispiel #2
0
func testPaxosReplaceNode() {
	t.send(10, master)
	for i := 0; i < (*numNodes-1)*10; i++ { //All but the dead node reply
		<-t.messages
	}
	reply := new(paxosrpc.GetServerReply)
	master.Call("Paxos.GetServers", new(paxosrpc.GetServerArgs), reply)
	nodes := (*reply).Nodes
	hostPort := "localhost:" + strconv.Itoa(10000+(rand.Int()%10000))
	stub := backend.NewStub()
	_, err := paxos.NewPaxos(nodes[0].HostPort, *numNodes, hostPort, uint64(*numNodes), 0, stub, paxosrpc.NONE)
	if err != nil {
		log.Println(err)
	}
	var replaceNode paxosrpc.Node
	for _, node := range nodes {
		if node.NodeID == 2 { //Again, we always assume 2 is killed..this is dependent on paxostest.sh
			replaceNode = node
		}
	}
	args := &paxosrpc.QuiesceArgs{nodes[0], replaceNode, paxosrpc.Node{hostPort, uint64(*numNodes)}}
	for _, node := range nodes {
		if node.NodeID != 2 {
			conn, err := rpc.DialHTTP("tcp", node.HostPort)
			if err != nil {
				log.Println(err)
			}
			conn.Call("Paxos.Quiesce", args, new(paxosrpc.QuiesceReply))
		}
	}
	for i := 0; i < 10; i++ {
		<-t.messages
	}
	master.Call("Paxos.GetServers", new(paxosrpc.GetServerArgs), reply)
	nodes = (*reply).Nodes
	for _, node := range nodes {
		conn, err := rpc.DialHTTP("tcp", node.HostPort)
		if err != nil {
			log.Println(err)
		}
		conn.Call("Paxos.Resume", new(paxosrpc.ResumeArgs), new(paxosrpc.ResumeReply))
	}
	t.sendAndListen(20)
}