133 lines
3 KiB
Go
133 lines
3 KiB
Go
package stateroot
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import (
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"errors"
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"sync"
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"github.com/nspcc-dev/neo-go/pkg/config"
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"github.com/nspcc-dev/neo-go/pkg/config/netmode"
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"github.com/nspcc-dev/neo-go/pkg/core/block"
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"github.com/nspcc-dev/neo-go/pkg/core/blockchainer"
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"github.com/nspcc-dev/neo-go/pkg/core/state"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/io"
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"github.com/nspcc-dev/neo-go/pkg/network/payload"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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"go.uber.org/zap"
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)
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type (
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// Service represents state root service.
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Service interface {
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blockchainer.StateRoot
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OnPayload(p *payload.Extensible) error
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AddSignature(height uint32, validatorIndex int32, sig []byte) error
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GetConfig() config.StateRoot
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SetRelayCallback(RelayCallback)
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Run()
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Shutdown()
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}
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service struct {
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blockchainer.StateRoot
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chain blockchainer.Blockchainer
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MainCfg config.StateRoot
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Network netmode.Magic
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log *zap.Logger
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accMtx sync.RWMutex
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accHeight uint32
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myIndex byte
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wallet *wallet.Wallet
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acc *wallet.Account
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srMtx sync.Mutex
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incompleteRoots map[uint32]*incompleteRoot
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cbMtx sync.RWMutex
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onValidatedRoot RelayCallback
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blockCh chan *block.Block
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done chan struct{}
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}
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)
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const (
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// Category is message category for extensible payloads.
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Category = "StateService"
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)
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// New returns new state root service instance using underlying module.
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func New(cfg config.StateRoot, log *zap.Logger, bc blockchainer.Blockchainer) (Service, error) {
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s := &service{
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StateRoot: bc.GetStateModule(),
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chain: bc,
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log: log,
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incompleteRoots: make(map[uint32]*incompleteRoot),
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blockCh: make(chan *block.Block),
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done: make(chan struct{}),
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}
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s.MainCfg = cfg
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if cfg.Enabled {
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var err error
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w := cfg.UnlockWallet
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if s.wallet, err = wallet.NewWalletFromFile(w.Path); err != nil {
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return nil, err
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}
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haveAccount := false
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for _, acc := range s.wallet.Accounts {
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if err := acc.Decrypt(w.Password); err == nil {
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haveAccount = true
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break
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}
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}
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if !haveAccount {
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return nil, errors.New("no wallet account could be unlocked")
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}
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s.SetUpdateValidatorsCallback(s.updateValidators)
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}
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return s, nil
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}
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// OnPayload implements Service interface.
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func (s *service) OnPayload(ep *payload.Extensible) error {
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m := new(Message)
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r := io.NewBinReaderFromBuf(ep.Data)
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m.DecodeBinary(r)
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if r.Err != nil {
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return r.Err
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}
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switch m.Type {
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case RootT:
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sr := m.Payload.(*state.MPTRoot)
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if sr.Index == 0 {
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return nil
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}
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return s.AddStateRoot(sr)
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case VoteT:
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v := m.Payload.(*Vote)
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return s.AddSignature(v.Height, v.ValidatorIndex, v.Signature)
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}
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return nil
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}
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func (s *service) updateValidators(height uint32, pubs keys.PublicKeys) {
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s.accMtx.Lock()
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defer s.accMtx.Unlock()
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s.acc = nil
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for i := range pubs {
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if acc := s.wallet.GetAccount(pubs[i].GetScriptHash()); acc != nil {
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err := acc.Decrypt(s.MainCfg.UnlockWallet.Password)
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if err == nil {
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s.acc = acc
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s.accHeight = height
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s.myIndex = byte(i)
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break
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}
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}
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}
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}
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