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

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package balance
import (
"errors"
"fmt"
neofscontract "github.com/nspcc-dev/neofs-node/pkg/morph/client/neofs/wrapper"
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"github.com/nspcc-dev/neofs-node/pkg/morph/event"
balanceEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/balance"
"github.com/panjf2000/ants/v2"
"go.uber.org/zap"
)
type (
// AlphabetState is a callback interface for inner ring global state
AlphabetState interface {
IsAlphabet() bool
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}
// PrecisionConverter converts balance amount values.
PrecisionConverter interface {
ToFixed8(int64) int64
}
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// Processor of events produced by balance contract in morph chain.
Processor struct {
log *zap.Logger
pool *ants.Pool
neofsClient *neofscontract.ClientWrapper
alphabetState AlphabetState
converter PrecisionConverter
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}
// Params of the processor constructor.
Params struct {
Log *zap.Logger
PoolSize int
NeoFSClient *neofscontract.ClientWrapper
AlphabetState AlphabetState
Converter PrecisionConverter
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}
)
const (
lockNotification = "Lock"
)
// New creates balance contract processor instance.
func New(p *Params) (*Processor, error) {
switch {
case p.Log == nil:
return nil, errors.New("ir/balance: logger is not set")
case p.AlphabetState == nil:
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return nil, errors.New("ir/balance: global state is not set")
case p.Converter == nil:
return nil, errors.New("ir/balance: balance precision converter is not set")
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}
p.Log.Debug("balance worker pool", zap.Int("size", p.PoolSize))
pool, err := ants.NewPool(p.PoolSize, ants.WithNonblocking(true))
if err != nil {
return nil, fmt.Errorf("ir/balance: can't create worker pool: %w", err)
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}
return &Processor{
log: p.Log,
pool: pool,
neofsClient: p.NeoFSClient,
alphabetState: p.AlphabetState,
converter: p.Converter,
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}, nil
}
// ListenerNotificationParsers for the 'event.Listener' event producer.
func (bp *Processor) ListenerNotificationParsers() []event.NotificationParserInfo {
var parsers []event.NotificationParserInfo
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// new lock event
lock := event.NotificationParserInfo{}
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lock.SetType(lockNotification)
lock.SetScriptHash(bp.neofsClient.ContractAddress())
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lock.SetParser(balanceEvent.ParseLock)
parsers = append(parsers, lock)
return parsers
}
// ListenerNotificationHandlers for the 'event.Listener' event producer.
func (bp *Processor) ListenerNotificationHandlers() []event.NotificationHandlerInfo {
var handlers []event.NotificationHandlerInfo
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// lock handler
lock := event.NotificationHandlerInfo{}
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lock.SetType(lockNotification)
lock.SetScriptHash(bp.neofsClient.ContractAddress())
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lock.SetHandler(bp.handleLock)
handlers = append(handlers, lock)
return handlers
}
// ListenerNotaryParsers for the 'event.Listener' event producer.
func (bp *Processor) ListenerNotaryParsers() []event.NotaryParserInfo {
return nil
}
// ListenerNotaryHandlers for the 'event.Listener' event producer.
func (bp *Processor) ListenerNotaryHandlers() []event.NotaryHandlerInfo {
return nil
}
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// TimersHandlers for the 'Timers' event producer.
func (bp *Processor) TimersHandlers() []event.NotificationHandlerInfo {
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return nil
}