forked from TrueCloudLab/frostfs-node
[#447] innerring: Define governance processor
Signed-off-by: Alex Vanin <alexey@nspcc.ru>
This commit is contained in:
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3965cc2296
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4 changed files with 237 additions and 0 deletions
11
pkg/innerring/processors/governance/events.go
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11
pkg/innerring/processors/governance/events.go
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package governance
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// Sync is a event to start governance synchronization.
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type Sync struct{}
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// MorphEvent implements Event interface.
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func (s Sync) MorphEvent() {}
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func NewSyncEvent() Sync {
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return Sync{}
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}
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19
pkg/innerring/processors/governance/handlers.go
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19
pkg/innerring/processors/governance/handlers.go
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package governance
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import (
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"github.com/nspcc-dev/neofs-node/pkg/morph/event"
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"go.uber.org/zap"
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)
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func (gp *Processor) HandleAlphabetSync(_ event.Event) {
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gp.log.Info("new event", zap.String("type", "sync"))
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// send event to the worker pool
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err := gp.pool.Submit(func() { gp.processAlphabetSync() })
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if err != nil {
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// there system can be moved into controlled degradation stage
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gp.log.Warn("governance worker pool drained",
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zap.Int("capacity", gp.pool.Cap()))
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}
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}
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98
pkg/innerring/processors/governance/process_update.go
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98
pkg/innerring/processors/governance/process_update.go
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package governance
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import (
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"encoding/binary"
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"sort"
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"github.com/nspcc-dev/neofs-node/pkg/innerring/invoke"
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"go.uber.org/zap"
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)
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const alphabetUpdateIDPrefix = "AlphabetUpdate"
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func (gp *Processor) processAlphabetSync() {
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if !gp.alphabetState.IsAlphabet() {
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gp.log.Info("non alphabet mode, ignore alphabet sync")
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return
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}
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mainnetAlphabet, err := gp.mainnetClient.NeoFSAlphabetList()
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if err != nil {
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gp.log.Error("can't fetch alphabet list from main net",
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zap.String("error", err.Error()))
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return
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}
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sidechainAlphabet, err := gp.morphClient.Committee()
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if err != nil {
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gp.log.Error("can't fetch alphabet list from side chain",
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zap.String("error", err.Error()))
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return
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}
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newAlphabet, err := newAlphabetList(sidechainAlphabet, mainnetAlphabet)
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if err != nil {
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gp.log.Error("can't merge alphabet lists from main net and side chain",
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zap.String("error", err.Error()))
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return
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}
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if newAlphabet == nil {
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gp.log.Info("no governance update, alphabet list has not been changed")
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return
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}
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gp.log.Info("alphabet list has been changed, starting update")
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sort.Sort(newAlphabet)
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// 1. Vote to side chain committee via alphabet contracts.
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err = gp.voter.VoteForSidechainValidator(newAlphabet)
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if err != nil {
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gp.log.Error("can't vote for side chain committee",
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zap.String("error", err.Error()))
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}
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// 2. Update NeoFSAlphabet role in side chain.
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innerRing, err := gp.morphClient.NeoFSAlphabetList()
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if err != nil {
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gp.log.Error("can't fetch inner ring list from side chain",
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zap.String("error", err.Error()))
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} else {
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newInnerRing, err := updateInnerRing(innerRing, sidechainAlphabet, newAlphabet)
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if err != nil {
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gp.log.Error("can't create new inner ring list with new alphabet keys",
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zap.String("error", err.Error()))
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} else {
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sort.Sort(newInnerRing)
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err = gp.morphClient.UpdateNeoFSAlphabetList(newInnerRing)
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if err != nil {
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gp.log.Error("can't update inner ring list with new alphabet keys",
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zap.String("error", err.Error()))
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}
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}
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}
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// 3. Update notary role in side chain.
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err = gp.morphClient.UpdateNotaryList(newAlphabet)
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if err != nil {
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gp.log.Error("can't update list of notary nodes in side chain",
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zap.String("error", err.Error()))
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}
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// 4. Update NeoFS contract in main net.
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epoch := gp.epochState.EpochCounter()
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buf := make([]byte, 8)
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binary.LittleEndian.PutUint64(buf, epoch)
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id := append([]byte(alphabetUpdateIDPrefix), buf...)
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err = invoke.AlphabetUpdate(gp.mainnetClient, gp.neofsContract, id, newAlphabet)
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if err != nil {
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gp.log.Error("can't update list of alphabet nodes in neofs contract",
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zap.String("error", err.Error()))
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}
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gp.log.Info("finished alphabet list update")
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}
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109
pkg/innerring/processors/governance/processor.go
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109
pkg/innerring/processors/governance/processor.go
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package governance
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import (
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client"
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"github.com/nspcc-dev/neofs-node/pkg/morph/event"
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"github.com/panjf2000/ants/v2"
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"github.com/pkg/errors"
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"go.uber.org/zap"
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)
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// GovernanceProcessor manages governance sync tasks. This process must not be
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// interrupted by other sync operation, so we limit pool size for processor to
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// one.
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const ProcessorPoolSize = 1
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type (
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// AlphabetState is a callback interface for inner ring global state.
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AlphabetState interface {
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IsAlphabet() bool
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}
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// Voter is a callback interface for alphabet contract voting.
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Voter interface {
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VoteForSidechainValidator(keys keys.PublicKeys) error
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}
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// EpochState is a callback interface for inner ring global state.
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EpochState interface {
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EpochCounter() uint64
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}
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// Processor of events related to governance in the network.
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Processor struct {
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log *zap.Logger
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pool *ants.Pool
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neofsContract util.Uint160
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alphabetState AlphabetState
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epochState EpochState
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voter Voter
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mainnetClient *client.Client
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morphClient *client.Client
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}
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// Params of the processor constructor.
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Params struct {
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Log *zap.Logger
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NeoFSContract util.Uint160
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AlphabetState AlphabetState
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EpochState EpochState
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Voter Voter
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MorphClient *client.Client
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MainnetClient *client.Client
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}
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)
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// New creates balance contract processor instance.
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func New(p *Params) (*Processor, error) {
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switch {
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case p.Log == nil:
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return nil, errors.New("ir/governance: logger is not set")
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case p.MainnetClient == nil:
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return nil, errors.New("ir/governance: neo:mainnet client is not set")
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case p.MorphClient == nil:
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return nil, errors.New("ir/governance: neo:sidechain client is not set")
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case p.AlphabetState == nil:
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return nil, errors.New("ir/governance: global state is not set")
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case p.EpochState == nil:
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return nil, errors.New("ir/governance: global state is not set")
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case p.Voter == nil:
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return nil, errors.New("ir/governance: global state is not set")
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}
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pool, err := ants.NewPool(ProcessorPoolSize, ants.WithNonblocking(true))
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if err != nil {
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return nil, errors.Wrap(err, "ir/governance: can't create worker pool")
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}
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return &Processor{
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log: p.Log,
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pool: pool,
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neofsContract: p.NeoFSContract,
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alphabetState: p.AlphabetState,
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epochState: p.EpochState,
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voter: p.Voter,
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mainnetClient: p.MainnetClient,
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morphClient: p.MorphClient,
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}, nil
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}
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// ListenerParsers for the 'event.Listener' event producer.
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func (gp *Processor) ListenerParsers() []event.ParserInfo {
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return nil
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}
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// ListenerHandlers for the 'event.Listener' event producer.
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func (gp *Processor) ListenerHandlers() []event.HandlerInfo {
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return nil
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}
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// TimersHandlers for the 'Timers' event producer.
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func (gp *Processor) TimersHandlers() []event.HandlerInfo {
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return nil
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}
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