frostfs-node/lib/muxer/muxer.go
alexvanin dadfd90dcd Initial commit
Initial public review release v0.10.0
2020-07-10 17:45:00 +03:00

247 lines
4.3 KiB
Go

package muxer
import (
"context"
"net"
"strings"
"sync/atomic"
"time"
"github.com/multiformats/go-multiaddr"
"github.com/nspcc-dev/neofs-node/lib/peers"
"github.com/soheilhy/cmux"
"github.com/valyala/fasthttp"
"go.uber.org/zap"
"google.golang.org/grpc"
)
type (
// StoreParams groups the parameters of network connections muxer constructor.
Params struct {
Logger *zap.Logger
API *fasthttp.Server
Address multiaddr.Multiaddr
ShutdownTTL time.Duration
P2P *grpc.Server
Peers peers.Interface
}
// Mux is an interface of network connections muxer.
Mux interface {
Start(ctx context.Context)
Stop()
}
muxer struct {
peers peers.Interface
maddr multiaddr.Multiaddr
run *int32
lis net.Listener
log *zap.Logger
ttl time.Duration
p2p *grpc.Server
api *fasthttp.Server
done chan struct{}
}
)
const (
// we close listener, that's why we ignore this errors
errClosedConnection = "use of closed network connection"
errMuxListenerClose = "mux: listener closed"
errHTTPServerClosed = "http: Server closed"
)
var (
ignoredErrors = []string{
errClosedConnection,
errMuxListenerClose,
errHTTPServerClosed,
}
)
// New constructs network connections muxer and returns Mux interface.
func New(p Params) Mux {
return &muxer{
maddr: p.Address,
ttl: p.ShutdownTTL,
run: new(int32),
api: p.API,
p2p: p.P2P,
log: p.Logger,
peers: p.Peers,
done: make(chan struct{}),
}
}
func needCatch(err error) bool {
if err == nil || containsErr(err) {
return false
}
return true
}
func containsErr(err error) bool {
for _, msg := range ignoredErrors {
if strings.Contains(err.Error(), msg) {
return true
}
}
return false
}
func (m *muxer) Start(ctx context.Context) {
var err error
// if already started - ignore
if !atomic.CompareAndSwapInt32(m.run, 0, 1) {
m.log.Warn("already started")
return
} else if m.lis != nil {
m.log.Info("try close old listener")
if err = m.lis.Close(); err != nil {
m.log.Fatal("could not close old listener",
zap.Error(err))
}
}
lis, err := m.peers.Listen(m.maddr)
if err != nil {
m.log.Fatal("could not close old listener",
zap.Error(err))
}
m.lis = NetListener(lis)
m.log.Info("create mux-listener",
zap.String("bind-address", m.lis.Addr().String()))
mux := cmux.New(m.lis)
mux.HandleError(func(e error) bool {
if needCatch(e) {
m.log.Error("error-handler: something went wrong",
zap.Error(e))
}
return true
})
// trpcL := mux.Match(cmux.Any()) // Any means anything that is not yet matched.
hLis := mux.Match(cmux.HTTP1Fast())
gLis := mux.Match(cmux.HTTP2())
pLis := mux.Match(cmux.Any())
m.log.Debug("delay context worker")
go func() {
<-ctx.Done()
m.Stop()
}()
m.log.Debug("delay tcp")
go func() {
m.log.Debug("tcp: serve")
loop:
for {
select {
case <-ctx.Done():
break loop
default:
}
con, err := pLis.Accept()
if err != nil {
break loop
}
_ = con.Close()
}
m.log.Debug("tcp: stopped")
}()
m.log.Debug("delay p2p")
go func() {
if m.p2p == nil {
m.log.Info("p2p: service is empty")
return
}
m.log.Debug("p2p: serve")
if err := m.p2p.Serve(gLis); needCatch(err) {
m.log.Error("p2p: something went wrong",
zap.Error(err))
}
m.log.Debug("p2p: stopped")
}()
m.log.Debug("delay api")
go func() {
if m.api == nil {
m.log.Info("api: service is empty")
return
}
m.log.Debug("api: serve")
if err := m.api.Serve(hLis); needCatch(err) {
m.log.Error("rpc: something went wrong",
zap.Error(err))
}
m.log.Debug("rpc: stopped")
}()
m.log.Debug("delay serve")
go func() {
defer func() { close(m.done) }()
m.log.Debug("mux: serve")
if err := mux.Serve(); needCatch(err) {
m.log.Fatal("mux: something went wrong",
zap.Error(err))
}
m.log.Debug("mux: stopped")
}()
}
func (m *muxer) Stop() {
if !atomic.CompareAndSwapInt32(m.run, 1, 0) {
m.log.Warn("already stopped")
return
}
if err := m.lis.Close(); err != nil {
m.log.Error("could not close connection",
zap.Error(err))
}
m.log.Debug("lis: close ok")
<-m.done // muxer stopped
if m.api != nil {
if err := m.api.Shutdown(); needCatch(err) {
m.log.Error("api: could not shutdown",
zap.Error(err))
}
m.log.Debug("api: shutdown ok")
}
if m.p2p != nil {
m.p2p.GracefulStop()
m.log.Debug("p2p: shutdown ok")
}
}