frostfs-node/pkg/innerring/processors/netmap/processor.go

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2020-07-24 13:54:03 +00:00
package netmap
import (
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neofs-node/pkg/innerring/timers"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-node/pkg/morph/event"
netmapEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/netmap"
"github.com/panjf2000/ants/v2"
"github.com/pkg/errors"
"go.uber.org/zap"
)
type (
// EpochTimerReseter is a callback interface for tickers component.
EpochTimerReseter interface {
ResetEpochTimer()
}
// EpochState is a callback interface for inner ring global state.
EpochState interface {
SetEpochCounter(uint64)
EpochCounter() uint64
}
// ActiveState is a callback interface for inner ring global state.
ActiveState interface {
IsActive() bool
}
// Processor of events produced by network map contract
// and new epoch ticker, because it is related to contract.
Processor struct {
log *zap.Logger
pool *ants.Pool
netmapContract util.Uint160
epochTimer EpochTimerReseter
epochState EpochState
activeState ActiveState
morphClient *client.Client
}
// Params of the processor constructor.
Params struct {
Log *zap.Logger
PoolSize int
NetmapContract util.Uint160
EpochTimer EpochTimerReseter
MorphClient *client.Client
EpochState EpochState
ActiveState ActiveState
}
)
const (
newEpochNotification = "NewEpoch"
)
// New creates network map contract processor instance.
func New(p *Params) (*Processor, error) {
switch {
case p.Log == nil:
return nil, errors.New("ir/netmap: logger is not set")
case p.MorphClient == nil:
return nil, errors.New("ir/netmap: morph client is not set")
case p.EpochTimer == nil:
return nil, errors.New("ir/netmap: epoch itmer is not set")
case p.EpochState == nil:
return nil, errors.New("ir/netmap: global state is not set")
case p.ActiveState == nil:
return nil, errors.New("ir/netmap: global state is not set")
}
p.Log.Debug("netmap worker pool", zap.Int("size", p.PoolSize))
pool, err := ants.NewPool(p.PoolSize, ants.WithNonblocking(true))
if err != nil {
return nil, errors.Wrap(err, "ir/netmap: can't create worker pool")
}
return &Processor{
log: p.Log,
pool: pool,
netmapContract: p.NetmapContract,
epochTimer: p.EpochTimer,
epochState: p.EpochState,
activeState: p.ActiveState,
morphClient: p.MorphClient,
}, nil
}
// ListenerParsers for the 'event.Listener' event producer.
func (np *Processor) ListenerParsers() []event.ParserInfo {
var parsers []event.ParserInfo
// new epoch event
newEpoch := event.ParserInfo{}
newEpoch.SetType(newEpochNotification)
newEpoch.SetScriptHash(np.netmapContract)
newEpoch.SetParser(netmapEvent.ParseNewEpoch)
parsers = append(parsers, newEpoch)
return parsers
}
// ListenerHandlers for the 'event.Listener' event producer.
func (np *Processor) ListenerHandlers() []event.HandlerInfo {
var handlers []event.HandlerInfo
// new epoch handler
newEpoch := event.HandlerInfo{}
newEpoch.SetType(newEpochNotification)
newEpoch.SetScriptHash(np.netmapContract)
newEpoch.SetHandler(np.handleNewEpoch)
handlers = append(handlers, newEpoch)
return handlers
}
// TimersHandlers for the 'Timers' event producer.
func (np *Processor) TimersHandlers() []event.HandlerInfo {
var handlers []event.HandlerInfo
// new epoch handler
newEpoch := event.HandlerInfo{}
newEpoch.SetType(timers.EpochTimer)
newEpoch.SetHandler(np.handleNewEpochTick)
handlers = append(handlers, newEpoch)
return handlers
}