frostfs-node/cmd/neofs-node/morph.go

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package main
import (
"context"
"errors"
"fmt"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-node/pkg/morph/client/netmap"
"github.com/nspcc-dev/neofs-node/pkg/morph/client/netmap/wrapper"
"github.com/nspcc-dev/neofs-node/pkg/morph/event"
netmapEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/netmap"
"github.com/nspcc-dev/neofs-node/pkg/morph/subscriber"
"github.com/nspcc-dev/neofs-node/pkg/util/rand"
"go.uber.org/zap"
)
const newEpochNotification = "NewEpoch"
var (
errNoRPCEndpoints = errors.New("NEO RPC endpoints are not specified in config")
errNoWSEndpoints = errors.New("websocket NEO listener endpoints are not specified in config")
)
func initMorphComponents(c *cfg) {
var err error
addresses := c.viper.GetStringSlice(cfgMorphRPCAddress)
if len(addresses) == 0 {
fatalOnErr(errNoRPCEndpoints)
}
crand := rand.New() // math/rand with cryptographic source
crand.Shuffle(len(addresses), func(i, j int) {
addresses[i], addresses[j] = addresses[j], addresses[i]
})
for i := range addresses {
c.cfgMorph.client, err = client.New(c.key, addresses[i])
if err == nil {
c.log.Info("neo RPC connection established",
zap.String("endpoint", addresses[i]))
break
}
c.log.Info("failed to establish neo RPC connection, trying another",
zap.String("endpoint", addresses[i]),
zap.String("error", err.Error()))
}
fatalOnErr(err)
staticClient, err := client.NewStatic(
c.cfgMorph.client,
c.cfgNetmap.scriptHash,
c.cfgContainer.fee,
)
fatalOnErr(err)
cli, err := netmap.New(staticClient)
fatalOnErr(err)
wrap, err := wrapper.New(cli)
fatalOnErr(err)
c.cfgObject.netMapStorage = newCachedNetmapStorage(c.cfgNetmap.state, wrap)
c.cfgNetmap.wrapper = wrap
}
func listenMorphNotifications(c *cfg) {
var (
err error
subs subscriber.Subscriber
)
endpoints := c.viper.GetStringSlice(cfgMorphNotifyRPCAddress)
if len(endpoints) == 0 {
fatalOnErr(errNoWSEndpoints)
}
timeout := c.viper.GetDuration(cfgMorphNotifyDialTimeout)
crand := rand.New() // math/rand with cryptographic source
crand.Shuffle(len(endpoints), func(i, j int) {
endpoints[i], endpoints[j] = endpoints[j], endpoints[i]
})
for i := range endpoints {
subs, err = subscriber.New(c.ctx, &subscriber.Params{
Log: c.log,
Endpoint: endpoints[i],
DialTimeout: timeout,
})
if err == nil {
c.log.Info("websocket neo event listener established",
zap.String("endpoint", endpoints[i]))
break
}
c.log.Info("failed to establish websocket neo event listener, trying another",
zap.String("endpoint", endpoints[i]),
zap.String("error", err.Error()))
}
fatalOnErr(err)
lis, err := event.NewListener(event.ListenerParams{
Logger: c.log,
Subscriber: subs,
})
fatalOnErr(err)
c.workers = append(c.workers, newWorkerFromFunc(func(ctx context.Context) {
lis.ListenWithError(ctx, c.internalErr)
}))
setNetmapNotificationParser(c, newEpochNotification, netmapEvent.ParseNewEpoch)
registerNotificationHandlers(c.cfgNetmap.scriptHash, lis, c.cfgNetmap.parsers, c.cfgNetmap.subscribers)
registerNotificationHandlers(c.cfgContainer.scriptHash, lis, c.cfgContainer.parsers, c.cfgContainer.subscribers)
}
func registerNotificationHandlers(scHash util.Uint160, lis event.Listener, parsers map[event.Type]event.Parser,
subs map[event.Type][]event.Handler) {
for typ, handlers := range subs {
pi := event.ParserInfo{}
pi.SetType(typ)
pi.SetScriptHash(scHash)
p, ok := parsers[typ]
if !ok {
panic(fmt.Sprintf("missing parser for event %s", typ))
}
pi.SetParser(p)
lis.SetParser(pi)
for _, h := range handlers {
hi := event.HandlerInfo{}
hi.SetType(typ)
hi.SetScriptHash(scHash)
hi.SetHandler(h)
lis.RegisterHandler(hi)
}
}
}