예제 #1
0
파일: config.go 프로젝트: scv119/6.824
// start i'th server in gi'th group
func (cfg *config) StartServer(gi int, i int) {
	cfg.mu.Lock()

	gg := cfg.groups[gi]

	// a fresh set of outgoing ClientEnd names
	// to talk to other servers in this group.
	gg.endnames[i] = make([]string, cfg.n)
	for j := 0; j < cfg.n; j++ {
		gg.endnames[i][j] = randstring(20)
	}

	// and the connections to other servers in this group.
	ends := make([]*labrpc.ClientEnd, cfg.n)
	for j := 0; j < cfg.n; j++ {
		ends[j] = cfg.net.MakeEnd(gg.endnames[i][j])
		cfg.net.Connect(gg.endnames[i][j], cfg.servername(gg.gid, j))
		cfg.net.Enable(gg.endnames[i][j], true)
	}

	// ends to talk to shardmaster service
	mends := make([]*labrpc.ClientEnd, cfg.nmasters)
	gg.mendnames[i] = make([]string, cfg.nmasters)
	for j := 0; j < cfg.nmasters; j++ {
		gg.mendnames[i][j] = randstring(20)
		mends[j] = cfg.net.MakeEnd(gg.mendnames[i][j])
		cfg.net.Connect(gg.mendnames[i][j], cfg.mastername(j))
		cfg.net.Enable(gg.mendnames[i][j], true)
	}

	// a fresh persister, so old instance doesn't overwrite
	// new instance's persisted state.
	// give the fresh persister a copy of the old persister's
	// state, so that the spec is that we pass StartKVServer()
	// the last persisted state.
	if gg.saved[i] != nil {
		gg.saved[i] = gg.saved[i].Copy()
	} else {
		gg.saved[i] = raft.MakePersister()
	}
	cfg.mu.Unlock()

	gg.servers[i] = StartServer(ends, i, gg.saved[i], cfg.maxraftstate,
		gg.gid, mends,
		func(servername string) *labrpc.ClientEnd {
			name := randstring(20)
			end := cfg.net.MakeEnd(name)
			cfg.net.Connect(name, servername)
			cfg.net.Enable(name, true)
			return end
		})

	kvsvc := labrpc.MakeService(gg.servers[i])
	rfsvc := labrpc.MakeService(gg.servers[i].rf)
	srv := labrpc.MakeServer()
	srv.AddService(kvsvc)
	srv.AddService(rfsvc)
	cfg.net.AddServer(cfg.servername(gg.gid, i), srv)
}
예제 #2
0
파일: config.go 프로젝트: scv119/6.824
func (cfg *config) StartMasterServer(i int) {
	// ClientEnds to talk to other master replicas.
	ends := make([]*labrpc.ClientEnd, cfg.nmasters)
	for j := 0; j < cfg.nmasters; j++ {
		endname := randstring(20)
		ends[j] = cfg.net.MakeEnd(endname)
		cfg.net.Connect(endname, cfg.mastername(j))
		cfg.net.Enable(endname, true)
	}

	p := raft.MakePersister()

	cfg.masterservers[i] = shardmaster.StartServer(ends, i, p)

	msvc := labrpc.MakeService(cfg.masterservers[i])
	rfsvc := labrpc.MakeService(cfg.masterservers[i].Raft())
	srv := labrpc.MakeServer()
	srv.AddService(msvc)
	srv.AddService(rfsvc)
	cfg.net.AddServer(cfg.mastername(i), srv)
}
예제 #3
0
// If restart servers, first call ShutdownServer
func (cfg *config) StartServer(i int) {
	cfg.mu.Lock()

	// a fresh set of outgoing ClientEnd names.
	cfg.endnames[i] = make([]string, cfg.n)
	for j := 0; j < cfg.n; j++ {
		cfg.endnames[i][j] = randstring(20)
	}

	// a fresh set of ClientEnds.
	ends := make([]*labrpc.ClientEnd, cfg.n)
	for j := 0; j < cfg.n; j++ {
		ends[j] = cfg.net.MakeEnd(cfg.endnames[i][j])
		cfg.net.Connect(cfg.endnames[i][j], j)
	}

	// a fresh persister, so old instance doesn't overwrite
	// new instance's persisted state.
	// give the fresh persister a copy of the old persister's
	// state, so that the spec is that we pass StartKVServer()
	// the last persisted state.
	if cfg.saved[i] != nil {
		cfg.saved[i] = cfg.saved[i].Copy()
	} else {
		cfg.saved[i] = raft.MakePersister()
	}
	cfg.mu.Unlock()

	cfg.kvservers[i] = StartKVServer(ends, i, cfg.saved[i], cfg.maxraftstate)

	kvsvc := labrpc.MakeService(cfg.kvservers[i])
	rfsvc := labrpc.MakeService(cfg.kvservers[i].rf)
	srv := labrpc.MakeServer()
	srv.AddService(kvsvc)
	srv.AddService(rfsvc)
	cfg.net.AddServer(i, srv)
}