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state.go
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state.go
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// Copyright (C) 2019-2021, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package state
import (
"errors"
"fmt"
"time"
"github.com/google/btree"
"github.com/prometheus/client_golang/prometheus"
"github.com/ava-labs/avalanchego/cache"
"github.com/ava-labs/avalanchego/cache/metercacher"
"github.com/ava-labs/avalanchego/database"
"github.com/ava-labs/avalanchego/database/linkeddb"
"github.com/ava-labs/avalanchego/database/prefixdb"
"github.com/ava-labs/avalanchego/database/versiondb"
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/snow"
"github.com/ava-labs/avalanchego/snow/choices"
"github.com/ava-labs/avalanchego/snow/uptime"
"github.com/ava-labs/avalanchego/snow/validators"
"github.com/ava-labs/avalanchego/utils/constants"
"github.com/ava-labs/avalanchego/utils/hashing"
"github.com/ava-labs/avalanchego/utils/math"
"github.com/ava-labs/avalanchego/utils/wrappers"
"github.com/ava-labs/avalanchego/vms/components/avax"
"github.com/ava-labs/avalanchego/vms/platformvm/blocks"
"github.com/ava-labs/avalanchego/vms/platformvm/config"
"github.com/ava-labs/avalanchego/vms/platformvm/genesis"
"github.com/ava-labs/avalanchego/vms/platformvm/metrics"
"github.com/ava-labs/avalanchego/vms/platformvm/reward"
"github.com/ava-labs/avalanchego/vms/platformvm/status"
"github.com/ava-labs/avalanchego/vms/platformvm/txs"
)
const (
validatorDiffsCacheSize = 2048
blockCacheSize = 2048
txCacheSize = 2048
rewardUTXOsCacheSize = 2048
chainCacheSize = 2048
chainDBCacheSize = 2048
)
var (
_ State = &state{}
ErrDelegatorSubset = errors.New("delegator's time range must be a subset of the validator's time range")
blockPrefix = []byte("block")
validatorsPrefix = []byte("validators")
currentPrefix = []byte("current")
pendingPrefix = []byte("pending")
validatorPrefix = []byte("validator")
delegatorPrefix = []byte("delegator")
subnetValidatorPrefix = []byte("subnetValidator")
validatorDiffsPrefix = []byte("validatorDiffs")
txPrefix = []byte("tx")
rewardUTXOsPrefix = []byte("rewardUTXOs")
utxoPrefix = []byte("utxo")
subnetPrefix = []byte("subnet")
chainPrefix = []byte("chain")
singletonPrefix = []byte("singleton")
timestampKey = []byte("timestamp")
currentSupplyKey = []byte("current supply")
lastAcceptedKey = []byte("last accepted")
initializedKey = []byte("initialized")
)
// Chain collects all methods to manage the state of the chain for block
// execution.
type Chain interface {
Stakers
UTXOAdder
UTXOGetter
UTXODeleter
GetTimestamp() time.Time
SetTimestamp(tm time.Time)
GetCurrentSupply() uint64
SetCurrentSupply(cs uint64)
GetRewardUTXOs(txID ids.ID) ([]*avax.UTXO, error)
AddRewardUTXO(txID ids.ID, utxo *avax.UTXO)
GetSubnets() ([]*txs.Tx, error)
AddSubnet(createSubnetTx *txs.Tx)
GetChains(subnetID ids.ID) ([]*txs.Tx, error)
AddChain(createChainTx *txs.Tx)
GetTx(txID ids.ID) (*txs.Tx, status.Status, error)
AddTx(tx *txs.Tx, status status.Status)
}
type LastAccepteder interface {
GetLastAccepted() ids.ID
SetLastAccepted(blkID ids.ID)
}
type BlockState interface {
GetStatelessBlock(blockID ids.ID) (blocks.Block, choices.Status, error)
AddStatelessBlock(block blocks.Block, status choices.Status)
}
type State interface {
LastAccepteder
Chain
BlockState
uptime.State
avax.UTXOReader
GetValidatorWeightDiffs(height uint64, subnetID ids.ID) (map[ids.NodeID]*ValidatorWeightDiff, error)
// Return the current validator set of [subnetID].
ValidatorSet(subnetID ids.ID) (validators.Set, error)
SetHeight(height uint64)
// Discard uncommitted changes to the database.
Abort()
// Commit changes to the base database.
Commit() error
// Returns a batch of unwritten changes that, when written, will be commit
// all pending changes to the base database.
CommitBatch() (database.Batch, error)
Close() error
}
type stateBlk struct {
Blk blocks.Block
Bytes []byte `serialize:"true"`
Status choices.Status `serialize:"true"`
}
/*
* VMDB
* |-. validators
* | |-. current
* | | |-. validator
* | | | '-. list
* | | | '-- txID -> uptime + potential reward
* | | |-. delegator
* | | | '-. list
* | | | '-- txID -> potential reward
* | | '-. subnetValidator
* | | '-. list
* | | '-- txID -> nil
* | |-. pending
* | | |-. validator
* | | | '-. list
* | | | '-- txID -> nil
* | | |-. delegator
* | | | '-. list
* | | | '-- txID -> nil
* | | '-. subnetValidator
* | | '-. list
* | | '-- txID -> nil
* | '-. diffs
* | '-. height+subnet
* | '-. list
* | '-- nodeID -> weightChange
* |-. blocks
* | '-- blockID -> block bytes
* |-. txs
* | '-- txID -> tx bytes + tx status
* |- rewardUTXOs
* | '-. txID
* | '-. list
* | '-- utxoID -> utxo bytes
* |- utxos
* | '-- utxoDB
* |-. subnets
* | '-. list
* | '-- txID -> nil
* |-. chains
* | '-. subnetID
* | '-. list
* | '-- txID -> nil
* '-. singletons
* |-- initializedKey -> nil
* |-- timestampKey -> timestamp
* |-- currentSupplyKey -> currentSupply
* '-- lastAcceptedKey -> lastAccepted
*/
type state struct {
cfg *config.Config
ctx *snow.Context
metrics metrics.Metrics
rewards reward.Calculator
baseDB *versiondb.Database
currentStakers *baseStakers
pendingStakers *baseStakers
currentHeight uint64
addedBlocks map[ids.ID]stateBlk // map of blockID -> Block
blockCache cache.Cacher // cache of blockID -> Block, if the entry is nil, it is not in the database
blockDB database.Database
uptimes map[ids.NodeID]*uptimeAndReward // nodeID -> uptimes
updatedUptimes map[ids.NodeID]struct{} // nodeID -> nil
validatorsDB database.Database
currentValidatorsDB database.Database
currentValidatorBaseDB database.Database
currentValidatorList linkeddb.LinkedDB
currentDelegatorBaseDB database.Database
currentDelegatorList linkeddb.LinkedDB
currentSubnetValidatorBaseDB database.Database
currentSubnetValidatorList linkeddb.LinkedDB
pendingValidatorsDB database.Database
pendingValidatorBaseDB database.Database
pendingValidatorList linkeddb.LinkedDB
pendingDelegatorBaseDB database.Database
pendingDelegatorList linkeddb.LinkedDB
pendingSubnetValidatorBaseDB database.Database
pendingSubnetValidatorList linkeddb.LinkedDB
validatorDiffsCache cache.Cacher // cache of heightWithSubnet -> map[ids.ShortID]*ValidatorWeightDiff
validatorDiffsDB database.Database
addedTxs map[ids.ID]*txAndStatus // map of txID -> {*txs.Tx, Status}
txCache cache.Cacher // cache of txID -> {*txs.Tx, Status} if the entry is nil, it is not in the database
txDB database.Database
addedRewardUTXOs map[ids.ID][]*avax.UTXO // map of txID -> []*UTXO
rewardUTXOsCache cache.Cacher // cache of txID -> []*UTXO
rewardUTXODB database.Database
modifiedUTXOs map[ids.ID]*avax.UTXO // map of modified UTXOID -> *UTXO if the UTXO is nil, it has been removed
utxoDB database.Database
utxoState avax.UTXOState
cachedSubnets []*txs.Tx // nil if the subnets haven't been loaded
addedSubnets []*txs.Tx
subnetBaseDB database.Database
subnetDB linkeddb.LinkedDB
addedChains map[ids.ID][]*txs.Tx // maps subnetID -> the newly added chains to the subnet
chainCache cache.Cacher // cache of subnetID -> the chains after all local modifications []*txs.Tx
chainDBCache cache.Cacher // cache of subnetID -> linkedDB
chainDB database.Database
// The persisted fields represent the current database value
timestamp, persistedTimestamp time.Time
currentSupply, persistedCurrentSupply uint64
// [lastAccepted] is the most recently accepted block.
lastAccepted, persistedLastAccepted ids.ID
singletonDB database.Database
}
type ValidatorWeightDiff struct {
Decrease bool `serialize:"true"`
Amount uint64 `serialize:"true"`
}
func (v *ValidatorWeightDiff) Add(negative bool, amount uint64) error {
if v.Decrease == negative {
var err error
v.Amount, err = math.Add64(v.Amount, amount)
return err
}
if v.Amount > amount {
v.Amount -= amount
} else {
v.Amount = math.Diff64(v.Amount, amount)
v.Decrease = negative
}
return nil
}
type heightWithSubnet struct {
Height uint64 `serialize:"true"`
SubnetID ids.ID `serialize:"true"`
}
type txBytesAndStatus struct {
Tx []byte `serialize:"true"`
Status status.Status `serialize:"true"`
}
type txAndStatus struct {
tx *txs.Tx
status status.Status
}
type uptimeAndReward struct {
txID ids.ID
lastUpdated time.Time
UpDuration time.Duration `serialize:"true"`
LastUpdated uint64 `serialize:"true"` // Unix time in seconds
PotentialReward uint64 `serialize:"true"`
}
func New(
db database.Database,
genesisBytes []byte,
metricsReg prometheus.Registerer,
cfg *config.Config,
ctx *snow.Context,
metrics metrics.Metrics,
rewards reward.Calculator,
) (State, error) {
s, err := new(
db,
metrics,
cfg,
ctx,
metricsReg,
rewards,
)
if err != nil {
return nil, err
}
if err := s.sync(genesisBytes); err != nil {
// Drop any errors on close to return the first error
_ = s.Close()
return nil, err
}
return s, nil
}
func new(
db database.Database,
metrics metrics.Metrics,
cfg *config.Config,
ctx *snow.Context,
metricsReg prometheus.Registerer,
rewards reward.Calculator,
) (*state, error) {
blockCache, err := metercacher.New(
"block_cache",
metricsReg,
&cache.LRU{Size: blockCacheSize},
)
if err != nil {
return nil, err
}
baseDB := versiondb.New(db)
validatorsDB := prefixdb.New(validatorsPrefix, baseDB)
currentValidatorsDB := prefixdb.New(currentPrefix, validatorsDB)
currentValidatorBaseDB := prefixdb.New(validatorPrefix, currentValidatorsDB)
currentDelegatorBaseDB := prefixdb.New(delegatorPrefix, currentValidatorsDB)
currentSubnetValidatorBaseDB := prefixdb.New(subnetValidatorPrefix, currentValidatorsDB)
pendingValidatorsDB := prefixdb.New(pendingPrefix, validatorsDB)
pendingValidatorBaseDB := prefixdb.New(validatorPrefix, pendingValidatorsDB)
pendingDelegatorBaseDB := prefixdb.New(delegatorPrefix, pendingValidatorsDB)
pendingSubnetValidatorBaseDB := prefixdb.New(subnetValidatorPrefix, pendingValidatorsDB)
validatorDiffsDB := prefixdb.New(validatorDiffsPrefix, validatorsDB)
validatorDiffsCache, err := metercacher.New(
"validator_diffs_cache",
metricsReg,
&cache.LRU{Size: validatorDiffsCacheSize},
)
if err != nil {
return nil, err
}
txCache, err := metercacher.New(
"tx_cache",
metricsReg,
&cache.LRU{Size: txCacheSize},
)
if err != nil {
return nil, err
}
rewardUTXODB := prefixdb.New(rewardUTXOsPrefix, baseDB)
rewardUTXOsCache, err := metercacher.New(
"reward_utxos_cache",
metricsReg,
&cache.LRU{Size: rewardUTXOsCacheSize},
)
if err != nil {
return nil, err
}
utxoDB := prefixdb.New(utxoPrefix, baseDB)
utxoState, err := avax.NewMeteredUTXOState(utxoDB, genesis.Codec, metricsReg)
if err != nil {
return nil, err
}
subnetBaseDB := prefixdb.New(subnetPrefix, baseDB)
chainCache, err := metercacher.New(
"chain_cache",
metricsReg,
&cache.LRU{Size: chainCacheSize},
)
if err != nil {
return nil, err
}
chainDBCache, err := metercacher.New(
"chain_db_cache",
metricsReg,
&cache.LRU{Size: chainDBCacheSize},
)
if err != nil {
return nil, err
}
return &state{
cfg: cfg,
ctx: ctx,
metrics: metrics,
rewards: rewards,
baseDB: baseDB,
addedBlocks: make(map[ids.ID]stateBlk),
blockCache: blockCache,
blockDB: prefixdb.New(blockPrefix, baseDB),
currentStakers: newBaseStakers(),
pendingStakers: newBaseStakers(),
uptimes: make(map[ids.NodeID]*uptimeAndReward),
updatedUptimes: make(map[ids.NodeID]struct{}),
validatorsDB: validatorsDB,
currentValidatorsDB: currentValidatorsDB,
currentValidatorBaseDB: currentValidatorBaseDB,
currentValidatorList: linkeddb.NewDefault(currentValidatorBaseDB),
currentDelegatorBaseDB: currentDelegatorBaseDB,
currentDelegatorList: linkeddb.NewDefault(currentDelegatorBaseDB),
currentSubnetValidatorBaseDB: currentSubnetValidatorBaseDB,
currentSubnetValidatorList: linkeddb.NewDefault(currentSubnetValidatorBaseDB),
pendingValidatorsDB: pendingValidatorsDB,
pendingValidatorBaseDB: pendingValidatorBaseDB,
pendingValidatorList: linkeddb.NewDefault(pendingValidatorBaseDB),
pendingDelegatorBaseDB: pendingDelegatorBaseDB,
pendingDelegatorList: linkeddb.NewDefault(pendingDelegatorBaseDB),
pendingSubnetValidatorBaseDB: pendingSubnetValidatorBaseDB,
pendingSubnetValidatorList: linkeddb.NewDefault(pendingSubnetValidatorBaseDB),
validatorDiffsDB: validatorDiffsDB,
validatorDiffsCache: validatorDiffsCache,
addedTxs: make(map[ids.ID]*txAndStatus),
txDB: prefixdb.New(txPrefix, baseDB),
txCache: txCache,
addedRewardUTXOs: make(map[ids.ID][]*avax.UTXO),
rewardUTXODB: rewardUTXODB,
rewardUTXOsCache: rewardUTXOsCache,
modifiedUTXOs: make(map[ids.ID]*avax.UTXO),
utxoDB: utxoDB,
utxoState: utxoState,
subnetBaseDB: subnetBaseDB,
subnetDB: linkeddb.NewDefault(subnetBaseDB),
addedChains: make(map[ids.ID][]*txs.Tx),
chainDB: prefixdb.New(chainPrefix, baseDB),
chainCache: chainCache,
chainDBCache: chainDBCache,
singletonDB: prefixdb.New(singletonPrefix, baseDB),
}, nil
}
func (s *state) GetCurrentValidator(subnetID ids.ID, nodeID ids.NodeID) (*Staker, error) {
return s.currentStakers.GetValidator(subnetID, nodeID)
}
func (s *state) PutCurrentValidator(staker *Staker) {
s.currentStakers.PutValidator(staker)
}
func (s *state) DeleteCurrentValidator(staker *Staker) {
s.currentStakers.DeleteValidator(staker)
}
func (s *state) GetCurrentDelegatorIterator(subnetID ids.ID, nodeID ids.NodeID) (StakerIterator, error) {
return s.currentStakers.GetDelegatorIterator(subnetID, nodeID), nil
}
func (s *state) PutCurrentDelegator(staker *Staker) {
s.currentStakers.PutDelegator(staker)
}
func (s *state) DeleteCurrentDelegator(staker *Staker) {
s.currentStakers.DeleteDelegator(staker)
}
func (s *state) GetCurrentStakerIterator() (StakerIterator, error) {
return s.currentStakers.GetStakerIterator(), nil
}
func (s *state) GetPendingValidator(subnetID ids.ID, nodeID ids.NodeID) (*Staker, error) {
return s.pendingStakers.GetValidator(subnetID, nodeID)
}
func (s *state) PutPendingValidator(staker *Staker) {
s.pendingStakers.PutValidator(staker)
}
func (s *state) DeletePendingValidator(staker *Staker) {
s.pendingStakers.DeleteValidator(staker)
}
func (s *state) GetPendingDelegatorIterator(subnetID ids.ID, nodeID ids.NodeID) (StakerIterator, error) {
return s.pendingStakers.GetDelegatorIterator(subnetID, nodeID), nil
}
func (s *state) PutPendingDelegator(staker *Staker) {
s.pendingStakers.PutDelegator(staker)
}
func (s *state) DeletePendingDelegator(staker *Staker) {
s.pendingStakers.DeleteDelegator(staker)
}
func (s *state) GetPendingStakerIterator() (StakerIterator, error) {
return s.pendingStakers.GetStakerIterator(), nil
}
func (s *state) shouldInit() (bool, error) {
has, err := s.singletonDB.Has(initializedKey)
return !has, err
}
func (s *state) doneInit() error {
return s.singletonDB.Put(initializedKey, nil)
}
func (s *state) GetSubnets() ([]*txs.Tx, error) {
if s.cachedSubnets != nil {
return s.cachedSubnets, nil
}
subnetDBIt := s.subnetDB.NewIterator()
defer subnetDBIt.Release()
txs := []*txs.Tx(nil)
for subnetDBIt.Next() {
subnetIDBytes := subnetDBIt.Key()
subnetID, err := ids.ToID(subnetIDBytes)
if err != nil {
return nil, err
}
subnetTx, _, err := s.GetTx(subnetID)
if err != nil {
return nil, err
}
txs = append(txs, subnetTx)
}
if err := subnetDBIt.Error(); err != nil {
return nil, err
}
txs = append(txs, s.addedSubnets...)
s.cachedSubnets = txs
return txs, nil
}
func (s *state) AddSubnet(createSubnetTx *txs.Tx) {
s.addedSubnets = append(s.addedSubnets, createSubnetTx)
if s.cachedSubnets != nil {
s.cachedSubnets = append(s.cachedSubnets, createSubnetTx)
}
}
func (s *state) GetChains(subnetID ids.ID) ([]*txs.Tx, error) {
if chainsIntf, cached := s.chainCache.Get(subnetID); cached {
return chainsIntf.([]*txs.Tx), nil
}
chainDB := s.getChainDB(subnetID)
chainDBIt := chainDB.NewIterator()
defer chainDBIt.Release()
txs := []*txs.Tx(nil)
for chainDBIt.Next() {
chainIDBytes := chainDBIt.Key()
chainID, err := ids.ToID(chainIDBytes)
if err != nil {
return nil, err
}
chainTx, _, err := s.GetTx(chainID)
if err != nil {
return nil, err
}
txs = append(txs, chainTx)
}
if err := chainDBIt.Error(); err != nil {
return nil, err
}
txs = append(txs, s.addedChains[subnetID]...)
s.chainCache.Put(subnetID, txs)
return txs, nil
}
func (s *state) AddChain(createChainTxIntf *txs.Tx) {
createChainTx := createChainTxIntf.Unsigned.(*txs.CreateChainTx)
subnetID := createChainTx.SubnetID
s.addedChains[subnetID] = append(s.addedChains[subnetID], createChainTxIntf)
if chainsIntf, cached := s.chainCache.Get(subnetID); cached {
chains := chainsIntf.([]*txs.Tx)
chains = append(chains, createChainTxIntf)
s.chainCache.Put(subnetID, chains)
}
}
func (s *state) getChainDB(subnetID ids.ID) linkeddb.LinkedDB {
if chainDBIntf, cached := s.chainDBCache.Get(subnetID); cached {
return chainDBIntf.(linkeddb.LinkedDB)
}
rawChainDB := prefixdb.New(subnetID[:], s.chainDB)
chainDB := linkeddb.NewDefault(rawChainDB)
s.chainDBCache.Put(subnetID, chainDB)
return chainDB
}
func (s *state) GetTx(txID ids.ID) (*txs.Tx, status.Status, error) {
if tx, exists := s.addedTxs[txID]; exists {
return tx.tx, tx.status, nil
}
if txIntf, cached := s.txCache.Get(txID); cached {
if txIntf == nil {
return nil, status.Unknown, database.ErrNotFound
}
tx := txIntf.(*txAndStatus)
return tx.tx, tx.status, nil
}
txBytes, err := s.txDB.Get(txID[:])
if err == database.ErrNotFound {
s.txCache.Put(txID, nil)
return nil, status.Unknown, database.ErrNotFound
} else if err != nil {
return nil, status.Unknown, err
}
stx := txBytesAndStatus{}
if _, err := genesis.Codec.Unmarshal(txBytes, &stx); err != nil {
return nil, status.Unknown, err
}
tx, err := txs.Parse(genesis.Codec, stx.Tx)
if err != nil {
return nil, status.Unknown, err
}
ptx := &txAndStatus{
tx: tx,
status: stx.Status,
}
s.txCache.Put(txID, ptx)
return ptx.tx, ptx.status, nil
}
func (s *state) AddTx(tx *txs.Tx, status status.Status) {
s.addedTxs[tx.ID()] = &txAndStatus{
tx: tx,
status: status,
}
}
func (s *state) GetRewardUTXOs(txID ids.ID) ([]*avax.UTXO, error) {
if utxos, exists := s.addedRewardUTXOs[txID]; exists {
return utxos, nil
}
if utxos, exists := s.rewardUTXOsCache.Get(txID); exists {
return utxos.([]*avax.UTXO), nil
}
rawTxDB := prefixdb.New(txID[:], s.rewardUTXODB)
txDB := linkeddb.NewDefault(rawTxDB)
it := txDB.NewIterator()
defer it.Release()
utxos := []*avax.UTXO(nil)
for it.Next() {
utxo := &avax.UTXO{}
if _, err := txs.Codec.Unmarshal(it.Value(), utxo); err != nil {
return nil, err
}
utxos = append(utxos, utxo)
}
if err := it.Error(); err != nil {
return nil, err
}
s.rewardUTXOsCache.Put(txID, utxos)
return utxos, nil
}
func (s *state) AddRewardUTXO(txID ids.ID, utxo *avax.UTXO) {
s.addedRewardUTXOs[txID] = append(s.addedRewardUTXOs[txID], utxo)
}
func (s *state) GetUTXO(utxoID ids.ID) (*avax.UTXO, error) {
if utxo, exists := s.modifiedUTXOs[utxoID]; exists {
if utxo == nil {
return nil, database.ErrNotFound
}
return utxo, nil
}
return s.utxoState.GetUTXO(utxoID)
}
func (s *state) UTXOIDs(addr []byte, start ids.ID, limit int) ([]ids.ID, error) {
return s.utxoState.UTXOIDs(addr, start, limit)
}
func (s *state) AddUTXO(utxo *avax.UTXO) {
s.modifiedUTXOs[utxo.InputID()] = utxo
}
func (s *state) DeleteUTXO(utxoID ids.ID) {
s.modifiedUTXOs[utxoID] = nil
}
func (s *state) GetUptime(nodeID ids.NodeID) (upDuration time.Duration, lastUpdated time.Time, err error) {
uptime, exists := s.uptimes[nodeID]
if !exists {
return 0, time.Time{}, database.ErrNotFound
}
return uptime.UpDuration, uptime.lastUpdated, nil
}
func (s *state) SetUptime(nodeID ids.NodeID, upDuration time.Duration, lastUpdated time.Time) error {
uptime, exists := s.uptimes[nodeID]
if !exists {
return database.ErrNotFound
}
uptime.UpDuration = upDuration
uptime.lastUpdated = lastUpdated
s.updatedUptimes[nodeID] = struct{}{}
return nil
}
// Returns the Primary Network start time of current validator [nodeID].
// Errors if [nodeID] isn't a current validator of the Primary Network.
func (s *state) GetStartTime(nodeID ids.NodeID) (time.Time, error) {
staker, err := s.currentStakers.GetValidator(constants.PrimaryNetworkID, nodeID)
if err != nil {
return time.Time{}, err
}
return staker.StartTime, nil
}
func (s *state) GetTimestamp() time.Time { return s.timestamp }
func (s *state) SetTimestamp(tm time.Time) { s.timestamp = tm }
func (s *state) GetCurrentSupply() uint64 { return s.currentSupply }
func (s *state) SetCurrentSupply(cs uint64) { s.currentSupply = cs }
func (s *state) GetLastAccepted() ids.ID { return s.lastAccepted }
func (s *state) SetLastAccepted(lastAccepted ids.ID) { s.lastAccepted = lastAccepted }
func (s *state) GetValidatorWeightDiffs(height uint64, subnetID ids.ID) (map[ids.NodeID]*ValidatorWeightDiff, error) {
prefixStruct := heightWithSubnet{
Height: height,
SubnetID: subnetID,
}
prefixBytes, err := genesis.Codec.Marshal(txs.Version, prefixStruct)
if err != nil {
return nil, err
}
prefixStr := string(prefixBytes)
if weightDiffsIntf, ok := s.validatorDiffsCache.Get(prefixStr); ok {
return weightDiffsIntf.(map[ids.NodeID]*ValidatorWeightDiff), nil
}
rawDiffDB := prefixdb.New(prefixBytes, s.validatorDiffsDB)
diffDB := linkeddb.NewDefault(rawDiffDB)
diffIter := diffDB.NewIterator()
defer diffIter.Release()
weightDiffs := make(map[ids.NodeID]*ValidatorWeightDiff)
for diffIter.Next() {
nodeID, err := ids.ToNodeID(diffIter.Key())
if err != nil {
return nil, err
}
weightDiff := ValidatorWeightDiff{}
_, err = genesis.Codec.Unmarshal(diffIter.Value(), &weightDiff)
if err != nil {
return nil, err
}
weightDiffs[nodeID] = &weightDiff
}
s.validatorDiffsCache.Put(prefixStr, weightDiffs)
return weightDiffs, diffIter.Error()
}
func (s *state) ValidatorSet(subnetID ids.ID) (validators.Set, error) {
vdrs := validators.NewSet()
for nodeID, validator := range s.currentStakers.validators[subnetID] {
staker := validator.validator
if staker != nil {
if err := vdrs.AddWeight(nodeID, staker.Weight); err != nil {
return nil, err
}
}
delegatorIterator := NewTreeIterator(validator.delegators)
for delegatorIterator.Next() {
staker := delegatorIterator.Value()
if err := vdrs.AddWeight(nodeID, staker.Weight); err != nil {
delegatorIterator.Release()
return nil, err
}
}
delegatorIterator.Release()
}
return vdrs, nil
}
func (s *state) syncGenesis(genesisBlk *blocks.CommitBlock, genesis *genesis.State) error {
genesisBlkID := genesisBlk.ID()
s.SetLastAccepted(genesisBlkID)
s.SetTimestamp(time.Unix(int64(genesis.Timestamp), 0))
s.SetCurrentSupply(genesis.InitialSupply)
s.AddStatelessBlock(genesisBlk, choices.Accepted)
// Persist UTXOs that exist at genesis
for _, utxo := range genesis.UTXOs {
s.AddUTXO(utxo)
}
// Persist primary network validator set at genesis
for _, vdrTx := range genesis.Validators {
tx, ok := vdrTx.Unsigned.(*txs.AddValidatorTx)
if !ok {
return fmt.Errorf("expected tx type *txs.AddValidatorTx but got %T", vdrTx.Unsigned)
}
stakeAmount := tx.Validator.Wght
stakeDuration := tx.Validator.Duration()
currentSupply := s.GetCurrentSupply()
potentialReward := s.rewards.Calculate(
stakeDuration,
stakeAmount,
currentSupply,
)
newCurrentSupply, err := math.Add64(currentSupply, potentialReward)
if err != nil {
return err
}
staker := NewPrimaryNetworkStaker(vdrTx.ID(), &tx.Validator)
staker.PotentialReward = potentialReward
staker.NextTime = staker.EndTime
staker.Priority = PrimaryNetworkValidatorCurrentPriority
s.PutCurrentValidator(staker)
s.AddTx(vdrTx, status.Committed)
s.SetCurrentSupply(newCurrentSupply)
}
for _, chain := range genesis.Chains {
unsignedChain, ok := chain.Unsigned.(*txs.CreateChainTx)
if !ok {
return fmt.Errorf("expected tx type *txs.CreateChainTx but got %T", chain.Unsigned)
}
// Ensure all chains that the genesis bytes say to create have the right
// network ID
if unsignedChain.NetworkID != s.ctx.NetworkID {
return avax.ErrWrongNetworkID
}
s.AddChain(chain)
s.AddTx(chain, status.Committed)
}
return s.write(0)
}
// Load pulls data previously stored on disk that is expected to be in memory.
func (s *state) load() error {
errs := wrappers.Errs{}
errs.Add(
s.loadMetadata(),
s.loadCurrentValidators(),
s.loadPendingValidators(),
)
return errs.Err
}
func (s *state) loadMetadata() error {
timestamp, err := database.GetTimestamp(s.singletonDB, timestampKey)
if err != nil {
return err
}
s.persistedTimestamp = timestamp
s.SetTimestamp(timestamp)
currentSupply, err := database.GetUInt64(s.singletonDB, currentSupplyKey)
if err != nil {
return err
}
s.persistedCurrentSupply = currentSupply
s.SetCurrentSupply(currentSupply)
lastAccepted, err := database.GetID(s.singletonDB, lastAcceptedKey)
if err != nil {
return err
}
s.persistedLastAccepted = lastAccepted
s.lastAccepted = lastAccepted
return nil
}
func (s *state) loadCurrentValidators() error {
s.currentStakers = newBaseStakers()
validatorIt := s.currentValidatorList.NewIterator()
defer validatorIt.Release()
for validatorIt.Next() {
txIDBytes := validatorIt.Key()
txID, err := ids.ToID(txIDBytes)
if err != nil {
return err
}
tx, _, err := s.GetTx(txID)
if err != nil {
return err
}
uptimeBytes := validatorIt.Value()
uptime := &uptimeAndReward{
txID: txID,
}
if _, err := txs.Codec.Unmarshal(uptimeBytes, uptime); err != nil {
return err
}
uptime.lastUpdated = time.Unix(int64(uptime.LastUpdated), 0)
addValidatorTx, ok := tx.Unsigned.(*txs.AddValidatorTx)
if !ok {
return fmt.Errorf("expected tx type *txs.AddValidatorTx but got %T", tx.Unsigned)
}
staker := NewPrimaryNetworkStaker(txID, &addValidatorTx.Validator)
staker.PotentialReward = uptime.PotentialReward
staker.NextTime = staker.EndTime
staker.Priority = PrimaryNetworkValidatorCurrentPriority
validator := s.currentStakers.getOrCreateValidator(staker.SubnetID, staker.NodeID)
validator.validator = staker
s.currentStakers.stakers.ReplaceOrInsert(staker)
s.uptimes[addValidatorTx.Validator.NodeID] = uptime
}
if err := validatorIt.Error(); err != nil {
return err
}
delegatorIt := s.currentDelegatorList.NewIterator()
defer delegatorIt.Release()
for delegatorIt.Next() {
txIDBytes := delegatorIt.Key()
txID, err := ids.ToID(txIDBytes)
if err != nil {
return err
}
tx, _, err := s.GetTx(txID)
if err != nil {
return err
}
potentialRewardBytes := delegatorIt.Value()
potentialReward, err := database.ParseUInt64(potentialRewardBytes)
if err != nil {
return err
}
addDelegatorTx, ok := tx.Unsigned.(*txs.AddDelegatorTx)
if !ok {
return fmt.Errorf("expected tx type *txs.AddDelegatorTx but got %T", tx.Unsigned)
}
staker := NewPrimaryNetworkStaker(txID, &addDelegatorTx.Validator)
staker.PotentialReward = potentialReward