// NewGameServer creates an instance of a Game Server. It does not return
// until it has successfully joined the cluster of game servers and started
// its libpaxos service.
func NewGameServer(centralServerHostPort, hostname string, port int, pattern string) (GameServer, error) {
// RPC Dial to the central server to join the ring
c, err := rpc.DialHTTP("tcp", centralServerHostPort)
if err != nil {
fmt.Println("Could not connect to central server host port via RPC")
fmt.Println(err)
return nil, err
}
// Register myself with the central server, obtaining my ID, and a
// complete list of all servers in the ring.
gshostport := fmt.Sprintf("%s:%d", hostname, port)
args := ¢ralrpc.RegisterGameServerArgs{gshostport}
var reply centralrpc.RegisterGameServerReply
reply.Status = centralrpc.NotReady
for reply.Status != centralrpc.OK {
err = c.Call("CentralServer.RegisterGameServer", args, &reply)
if err != nil {
fmt.Println("Could not RPC call method CentralServer.RegisterGameServer")
fmt.Println(err)
return nil, err
}
if reply.Status == centralrpc.Full {
return nil, errors.New("Could not register with central server, ring FULL")
}
time.Sleep(REGISTER_RETRY_INTERVAL * time.Millisecond)
}
// Start the libpaxos service
newlibpaxos, err := libpaxos.NewLibpaxos(reply.GameServerID, gshostport, reply.Servers)
if err != nil {
fmt.Println("Could not start libpaxos")
fmt.Println(err)
return nil, err
}
// Websockets client related stuff
clients := make(map[int]*client)
addCh := make(chan *client)
delCh := make(chan *client)
doneCh := make(chan bool)
errCh := make(chan error)
// Debugging setup
var vOut, eOut io.Writer
if LOG_TO_FILE {
now := time.Now().String()
var err1, err2 error
vOut, err1 = os.Create(fmt.Sprintf("%d_debug_%s.log", reply.GameServerID, now))
eOut, err2 = os.Create(fmt.Sprintf("%d_error_%s.log", reply.GameServerID, now))
if err1 != nil || err2 != nil {
panic(err)
}
} else {
vOut = os.Stdout
eOut = os.Stderr
}
LOGV = util.NewLogger(DEBUG_LOG, "DEBUG", vOut)
LOGE = util.NewLogger(ERROR_LOG, "ERROR", eOut)
gs := &gameServer{
reply.GameServerID,
hostname,
port,
gshostport,
newlibpaxos,
pattern,
sync.Mutex{},
clients,
addCh,
delCh,
doneCh,
errCh,
0,
make(chan *paxosrpc.ProposalValue, 1000),
len(reply.Servers),
lib2048.NewGame2048(),
make(chan *util.Game2048State, 1000),
make(chan *lib2048.Move, 1000),
}
gs.libpaxos.DecidedHandler(gs.handleDecided)
LOGV.Printf("GS node %d loaded libpaxos\n", reply.GameServerID)
go gs.ListenForClients()
go gs.processMoves()
go gs.clientTasker()
go gs.clientMasterHandler()
return gs, nil
}
"time"
)
type cclient struct {
conn *websocket.Conn
game lib2048.Game2048
movelist []lib2048.Direction
quitchan chan int
stophandler chan int
stopsender chan int
stopreceiver chan int
moveQueue chan util.ClientMove
cserv string
}
var LOGV = util.NewLogger(false, "CMDLINECLIENT", os.Stdout)
var LOGE = util.NewLogger(true, "CMDLINECLIENT", os.Stderr)
func NewCClient(cservAddr string, gameServHostPort string, interval int) (Cclient, error) {
ws, err := doConnect(cservAddr, gameServHostPort)
if err != nil {
return nil, err
}
game := lib2048.NewGame2048()
cc := &cclient{
ws,
game,
make([]lib2048.Direction, 0),
make(chan int),
make(chan int),
make(chan int),
"errors"
"fmt"
"math"
"net"
"net/http"
"net/rpc"
"os"
"sync"
)
const (
ERROR_LOG bool = true
DEBUG_LOG bool = false
)
var LOGV = util.NewLogger(DEBUG_LOG, "DEBUG", os.Stdout)
var LOGE = util.NewLogger(ERROR_LOG, "ERROR", os.Stderr)
type gameServer struct {
info paxosrpc.Node
clientCount int
}
type centralServer struct {
nextGameServerID uint32
gameServersLock sync.Mutex
gameServers map[uint32]*gameServer
hostPortToGameServer map[string]*gameServer
gameServersSlice []paxosrpc.Node
numGameServers int
}
package main
import (
"distributed2048/cmdlineclient"
"distributed2048/lib2048"
"distributed2048/util"
"flag"
"fmt"
"os"
"strings"
"time"
)
var LOGV = util.NewLogger(false, "LIBSTORETEST", os.Stdout)
var (
numClients = flag.Int("numClients", 1, "number of game clients")
// numGameServers = flag.Int("numGameServers", 1, "number of game servers")
gameServerHostPorts = flag.String("gsHostPorts", "", "comma separated list of host:port for each game server")
centralServerHostPort = flag.String("csHostPort", fmt.Sprintf("localhost:%d", util.CENTRALPORT), "host:port of central server")
numMoves = flag.Int("numMoves", 10, "number of random moves to generate")
numSendingClients = flag.Int("numSendingClients", 1, "number of clients that will be sending moves")
sendMoveInterval = flag.Int("sendMoveInterval", 1000, "number of milliseconds between sending moves")
)
type testFunc struct {
name string
f func()
}
func test() bool {
