func Main(clusterName, self, buri, secret string, cl *doozer.Conn, udpConn net.PacketConn, listener, webListener net.Listener, pulseInterval, fillDelay, kickTimeout int64) {
listenAddr := listener.Addr().String()
canWrite := make(chan bool, 1)
in := make(chan consensus.Packet, 50)
out := make(chan consensus.Packet, 50)
st := store.New()
pr := &proposer{
seqns: make(chan int64, alpha),
props: make(chan *consensus.Prop),
st: st,
}
calSrv := func(start int64) {
go gc.Pulse(self, st.Seqns, pr, pulseInterval)
go gc.Clean(st, 360000, time.Tick(1e9))
consensus.NewManager(self, start, alpha, in, out, st.Ops, pr.seqns, pr.props, fillDelay, st)
}
if cl == nil { // we are the only node in a new cluster
set(st, "/ctl/name", clusterName, store.Missing)
set(st, "/ctl/node/"+self+"/addr", listenAddr, store.Missing)
set(st, "/ctl/node/"+self+"/hostname", os.Getenv("HOSTNAME"), store.Missing)
set(st, "/ctl/node/"+self+"/version", Version, store.Missing)
set(st, "/ctl/cal/0", self, store.Missing)
calSrv(<-st.Seqns)
// Skip ahead alpha steps so that the registrar can provide a
// meaningful cluster.
for i := 0; i < alpha; i++ {
st.Ops <- store.Op{1 + <-st.Seqns, store.Nop}
}
canWrite <- true
} else {
setC(cl, "/ctl/node/"+self+"/addr", listenAddr, store.Clobber)
setC(cl, "/ctl/node/"+self+"/hostname", os.Getenv("HOSTNAME"), store.Clobber)
setC(cl, "/ctl/node/"+self+"/version", Version, store.Clobber)
rev, err := cl.Rev()
if err != nil {
panic(err)
}
stop := make(chan bool, 1)
go follow(st, cl, rev+1, stop)
info, err := cl.Walk("/**", rev, 0, -1)
if err != nil {
panic(err)
}
for _, ev := range info {
// store.Clobber is okay here because the event
// has already passed through another store
mut := store.MustEncodeSet(ev.Path, string(ev.Body), store.Clobber)
st.Ops <- store.Op{ev.Rev, mut}
}
st.Flush()
ch, err := st.Wait(store.Any, rev+1)
if err == nil {
<-ch
}
go func() {
n := activate(st, self, cl)
calSrv(n)
advanceUntil(cl, st.Seqns, n+alpha)
stop <- true
canWrite <- true
if buri != "" {
b, err := doozer.DialUri(buri)
if err != nil {
panic(err)
}
setC(
b,
"/ctl/ns/"+clusterName+"/"+self,
listenAddr,
store.Missing,
)
}
}()
}
shun := make(chan string, 3) // sufficient for a cluster of 7
go member.Clean(shun, st, pr)
go server.ListenAndServe(listener, canWrite, st, pr, secret)
if secret == "" && webListener != nil {
web.Store = st
web.ClusterName = clusterName
go web.Serve(webListener)
}
go func() {
for p := range out {
addr, err := net.ResolveUDPAddr(p.Addr)
if err != nil {
log.Println(err)
continue
}
n, err := udpConn.WriteTo(p.Data, addr)
if err != nil {
log.Println(err)
continue
}
if n != len(p.Data) {
log.Println("packet len too long:", len(p.Data))
continue
}
}
}()
lv := liveness{
timeout: kickTimeout,
ival: kickTimeout / 2,
times: make(map[string]int64),
self: self,
shun: shun,
}
for {
t := time.Nanoseconds()
buf := make([]byte, maxUDPLen)
n, addr, err := udpConn.ReadFrom(buf)
if err == os.EINVAL {
return
}
if err != nil {
log.Println(err)
continue
}
buf = buf[:n]
// Update liveness time stamp for this addr
lv.times[addr.String()] = t
lv.check(t)
in <- consensus.Packet{addr.String(), buf}
}
}
func Main(clusterName, self, baddr string, cl *doozer.Client, udpConn net.PacketConn, listener, webListener net.Listener, pulseInterval, fillDelay, kickTimeout int64) {
listenAddr := listener.Addr().String()
var activateSeqn int64
useSelf := make(chan bool, 1)
st := store.New()
pr := &proposer{
seqns: make(chan int64, alpha),
props: make(chan *consensus.Prop),
st: st,
}
calSrv := func() {
go gc.Pulse(self, st.Seqns, pr, pulseInterval)
go gc.Clean(st, 360000, time.Tick(1e9))
}
if cl == nil { // we are the only node in a new cluster
set(st, "/ctl/name", clusterName, store.Missing)
set(st, "/ctl/node/"+self+"/addr", listenAddr, store.Missing)
set(st, "/ctl/node/"+self+"/hostname", os.Getenv("HOSTNAME"), store.Missing)
set(st, "/ctl/node/"+self+"/version", Version, store.Missing)
set(st, "/ctl/cal/0", self, store.Missing)
calSrv()
close(useSelf)
} else {
setC(cl, "/ctl/node/"+self+"/addr", listenAddr, store.Clobber)
setC(cl, "/ctl/node/"+self+"/hostname", os.Getenv("HOSTNAME"), store.Clobber)
setC(cl, "/ctl/node/"+self+"/version", Version, store.Clobber)
rev, err := cl.Rev()
if err != nil {
panic(err)
}
walk, err := cl.Walk("/**", &rev, nil, nil)
if err != nil {
panic(err)
}
watch, err := cl.Watch("/**", rev+1)
if err != nil {
panic(err)
}
go follow(st.Ops, watch.C)
follow(st.Ops, walk.C)
st.Flush()
ch, err := st.Wait(rev + 1)
if err == nil {
<-ch
}
go func() {
activateSeqn = activate(st, self, cl)
calSrv()
advanceUntil(cl, st.Seqns, activateSeqn+alpha)
err := watch.Cancel()
if err != nil {
panic(err)
}
close(useSelf)
if baddr != "" {
b := doozer.New("<boot>", baddr)
setC(
b,
"/ctl/ns/"+clusterName+"/"+self,
listenAddr,
store.Missing,
)
}
}()
}
start := <-st.Seqns
cmw := st.Watch(store.Any)
in := make(chan consensus.Packet, 50)
out := make(chan consensus.Packet, 50)
consensus.NewManager(self, start, alpha, in, out, st.Ops, pr.seqns, pr.props, cmw, fillDelay, st)
if cl == nil {
// Skip ahead alpha steps so that the registrar can provide a
// meaningful cluster.
for i := start + 1; i < start+alpha+1; i++ {
st.Ops <- store.Op{i, store.Nop}
}
}
shun := make(chan string, 3) // sufficient for a cluster of 7
go member.Clean(shun, st, pr)
sv := &server.Server{listenAddr, st, pr, self, alpha}
go sv.Serve(listener, useSelf)
if webListener != nil {
web.Store = st
web.ClusterName = clusterName
go web.Serve(webListener)
}
go func() {
for p := range out {
addr, err := net.ResolveUDPAddr(p.Addr)
if err != nil {
log.Println(err)
continue
}
n, err := udpConn.WriteTo(p.Data, addr)
if err != nil {
log.Println(err)
continue
}
if n != len(p.Data) {
log.Println("packet len too long:", len(p.Data))
continue
}
}
}()
lv := liveness{
timeout: kickTimeout,
ival: kickTimeout / 2,
times: make(map[string]int64),
self: self,
shun: shun,
}
for {
t := time.Nanoseconds()
buf := make([]byte, maxUDPLen)
n, addr, err := udpConn.ReadFrom(buf)
if err == os.EINVAL {
return
}
if err != nil {
log.Println(err)
continue
}
buf = buf[:n]
// Update liveness time stamp for this addr
lv.times[addr.String()] = t
lv.check(t)
in <- consensus.Packet{addr.String(), buf}
}
}
func Main(clusterName, self, buri, rwsk, rosk string, cl *doozer.Conn, udpConn net.PacketConn, listener, webListener net.Listener, pulseInterval, fillDelay, kickTimeout int64, hi int64) {
listenAddr := listener.Addr().String()
canWrite := make(chan bool, 1)
in := make(chan consensus.Packet, 50)
out := make(chan consensus.Packet, 50)
st := store.New()
pr := &proposer{
seqns: make(chan int64, alpha),
props: make(chan *consensus.Prop),
st: st,
}
calSrv := func(start int64) {
go gc.Pulse(self, st.Seqns, pr, pulseInterval)
go gc.Clean(st, hi, time.Tick(1e9))
cfg := &consensus.Config{
Self: self,
DefRev: start,
Alpha: alpha,
In: in,
Out: out,
Ops: st.Ops,
PSeqn: pr.seqns,
Props: pr.props,
TFill: fillDelay,
Store: st,
Ticker: time.Tick(10e6),
}
consensus.NewManager(cfg)
}
if cl == nil { // we are the only node in a new cluster
set(st, "/ctl/name", clusterName, store.Missing)
set(st, "/ctl/node/"+self+"/addr", listenAddr, store.Missing)
set(st, "/ctl/node/"+self+"/hostname", os.Getenv("HOSTNAME"), store.Missing)
set(st, "/ctl/node/"+self+"/version", Version, store.Missing)
set(st, "/ctl/cal/0", self, store.Missing)
calSrv(<-st.Seqns)
// Skip ahead alpha steps so that the registrar can provide a
// meaningful cluster.
for i := 0; i < alpha; i++ {
st.Ops <- store.Op{1 + <-st.Seqns, store.Nop}
}
canWrite <- true
} else {
setC(cl, "/ctl/node/"+self+"/addr", listenAddr, store.Clobber)
setC(cl, "/ctl/node/"+self+"/hostname", os.Getenv("HOSTNAME"), store.Clobber)
setC(cl, "/ctl/node/"+self+"/version", Version, store.Clobber)
rev, err := cl.Rev()
if err != nil {
panic(err)
}
stop := make(chan bool, 1)
go follow(st, cl, rev+1, stop)
errs := make(chan os.Error)
go func() {
e, ok := <-errs
if ok {
panic(e)
}
}()
doozer.Walk(cl, rev, "/", cloner{st.Ops, cl}, errs)
close(errs)
st.Flush()
ch, err := st.Wait(store.Any, rev+1)
if err == nil {
<-ch
}
go func() {
n := activate(st, self, cl)
calSrv(n)
advanceUntil(cl, st.Seqns, n+alpha)
stop <- true
canWrite <- true
if buri != "" {
b, err := doozer.DialUri(buri)
if err != nil {
panic(err)
}
setC(
b,
"/ctl/ns/"+clusterName+"/"+self,
listenAddr,
store.Missing,
)
}
}()
}
shun := make(chan string, 3) // sufficient for a cluster of 7
go member.Clean(shun, st, pr)
go server.ListenAndServe(listener, canWrite, st, pr, rwsk, rosk)
if rwsk == "" && rosk == "" && webListener != nil {
web.Store = st
web.ClusterName = clusterName
go web.Serve(webListener)
}
go func() {
for p := range out {
addr, err := net.ResolveUDPAddr("udp", p.Addr)
if err != nil {
log.Println(err)
continue
}
n, err := udpConn.WriteTo(p.Data, addr)
if err != nil {
log.Println(err)
continue
}
if n != len(p.Data) {
log.Println("packet len too long:", len(p.Data))
continue
}
}
}()
lv := liveness{
timeout: kickTimeout,
ival: kickTimeout / 2,
times: make(map[string]int64),
self: self,
shun: shun,
}
for {
t := time.Nanoseconds()
buf := make([]byte, maxUDPLen)
n, addr, err := udpConn.ReadFrom(buf)
if err == os.EINVAL {
return
}
if err != nil {
log.Println(err)
continue
}
buf = buf[:n]
// Update liveness time stamp for this addr
lv.times[addr.String()] = t
lv.check(t)
in <- consensus.Packet{addr.String(), buf}
}
}