cerc-io/plugeth
12
0
Fork 1
Code Issues 4 Pull Requests Packages Projects Releases Wiki Activity

core, accounts, eth, trie: handle genesis state missing (#28171)

Browse Source 
* core, accounts, eth, trie: handle genesis state missing

* core, eth, trie: polish

* core: manage txpool subscription in mainpool

* eth/backend: fix test

* cmd, eth: fix test

* core/rawdb, trie/triedb/pathdb: address comments

* eth, trie: address comments

* eth: inline the function

* eth: use synced flag

* core/txpool: revert changes in txpool

* core, eth, trie: rename functions
This commit is contained in:
rjl493456442
2023-09-28 10:00:53 +03:00
committed by GitHub
parent a081130081
commit 73f5bcb75b
21 changed files with 244 additions and 148 deletions
Download Patch File Download Diff File Expand all files Collapse all files
core/blockchain.go
+19 -35
View File
@@ -337,17 +337,17 @@ func NewBlockChain(db ethdb.Database, cacheConfig *CacheConfig, genesis *Genesis
if err := bc.loadLastState(); err != nil {
return nil, err
}
// Make sure the state associated with the block is available
// Make sure the state associated with the block is available, or log out
// if there is no available state, waiting for state sync.
head := bc.CurrentBlock()
if !bc.HasState(head.Root) {
if head.Number.Uint64() == 0 {
// The genesis state is missing, which is only possible in the path-based
// scheme. This situation occurs when the state syncer overwrites it.
//
// The solution is to reset the state to the genesis state. Although it may not
// match the sync target, the state healer will later address and correct any
// inconsistencies.
bc.resetState()
// scheme. This situation occurs when the initial state sync is not finished
// yet, or the chain head is rewound below the pivot point. In both scenario,
// there is no possible recovery approach except for rerunning a snap sync.
// Do nothing here until the state syncer picks it up.
log.Info("Genesis state is missing, wait state sync")
} else {
// Head state is missing, before the state recovery, find out the
// disk layer point of snapshot(if it's enabled). Make sure the
@@ -630,28 +630,6 @@ func (bc *BlockChain) SetSafe(header *types.Header) {
}
}
// resetState resets the persistent state to genesis state if it's not present.
func (bc *BlockChain) resetState() {
// Short circuit if the genesis state is already present.
root := bc.genesisBlock.Root()
if bc.HasState(root) {
return
}
// Reset the state database to empty for committing genesis state.
// Note, it should only happen in path-based scheme and Reset function
// is also only call-able in this mode.
if bc.triedb.Scheme() == rawdb.PathScheme {
if err := bc.triedb.Reset(types.EmptyRootHash); err != nil {
log.Crit("Failed to clean state", "err", err) // Shouldn't happen
}
}
// Write genesis state into database.
if err := CommitGenesisState(bc.db, bc.triedb, bc.genesisBlock.Hash()); err != nil {
log.Crit("Failed to commit genesis state", "err", err)
}
log.Info("Reset state to genesis", "root", root)
}
// setHeadBeyondRoot rewinds the local chain to a new head with the extra condition
// that the rewind must pass the specified state root. This method is meant to be
// used when rewinding with snapshots enabled to ensure that we go back further than
@@ -687,7 +665,6 @@ func (bc *BlockChain) setHeadBeyondRoot(head uint64, time uint64, root common.Ha
if newHeadBlock == nil {
log.Error("Gap in the chain, rewinding to genesis", "number", header.Number, "hash", header.Hash())
newHeadBlock = bc.genesisBlock
bc.resetState()
} else {
// Block exists, keep rewinding until we find one with state,
// keeping rewinding until we exceed the optional threshold
@@ -715,16 +692,14 @@ func (bc *BlockChain) setHeadBeyondRoot(head uint64, time uint64, root common.Ha
}
}
if beyondRoot || newHeadBlock.NumberU64() == 0 {
if newHeadBlock.NumberU64() == 0 {
bc.resetState()
} else if !bc.HasState(newHeadBlock.Root()) {
if !bc.HasState(newHeadBlock.Root()) && bc.stateRecoverable(newHeadBlock.Root()) {
// Rewind to a block with recoverable state. If the state is
// missing, run the state recovery here.
if err := bc.triedb.Recover(newHeadBlock.Root()); err != nil {
log.Crit("Failed to rollback state", "err", err) // Shouldn't happen
}
log.Debug("Rewound to block with state", "number", newHeadBlock.NumberU64(), "hash", newHeadBlock.Hash())
}
log.Debug("Rewound to block with state", "number", newHeadBlock.NumberU64(), "hash", newHeadBlock.Hash())
break
}
log.Debug("Skipping block with threshold state", "number", newHeadBlock.NumberU64(), "hash", newHeadBlock.Hash(), "root", newHeadBlock.Root())
@@ -739,6 +714,15 @@ func (bc *BlockChain) setHeadBeyondRoot(head uint64, time uint64, root common.Ha
// to low, so it's safe to update in-memory markers directly.
bc.currentBlock.Store(newHeadBlock.Header())
headBlockGauge.Update(int64(newHeadBlock.NumberU64()))
// The head state is missing, which is only possible in the path-based
// scheme. This situation occurs when the chain head is rewound below
// the pivot point. In this scenario, there is no possible recovery
// approach except for rerunning a snap sync. Do nothing here until the
// state syncer picks it up.
if !bc.HasState(newHeadBlock.Root()) {
log.Info("Chain is stateless, wait state sync", "number", newHeadBlock.Number(), "hash", newHeadBlock.Hash())
}
}
// Rewind the snap block in a simpleton way to the target head
if currentSnapBlock := bc.CurrentSnapBlock(); currentSnapBlock != nil && header.Number.Uint64() < currentSnapBlock.Number.Uint64() {
@@ -838,7 +822,7 @@ func (bc *BlockChain) SnapSyncCommitHead(hash common.Hash) error {
// Reset the trie database with the fresh snap synced state.
root := block.Root()
if bc.triedb.Scheme() == rawdb.PathScheme {
if err := bc.triedb.Reset(root); err != nil {
if err := bc.triedb.Enable(root); err != nil {
return err
}
}
core/rawdb/accessors_sync.go
+22
View File
@@ -76,3 +76,25 @@ func DeleteSkeletonHeader(db ethdb.KeyValueWriter, number uint64) {
log.Crit("Failed to delete skeleton header", "err", err)
}
}
const (
StateSyncUnknown = uint8(0) // flags the state snap sync is unknown
StateSyncRunning = uint8(1) // flags the state snap sync is not completed yet
StateSyncFinished = uint8(2) // flags the state snap sync is completed
)
// ReadSnapSyncStatusFlag retrieves the state snap sync status flag.
func ReadSnapSyncStatusFlag(db ethdb.KeyValueReader) uint8 {
blob, err := db.Get(snapSyncStatusFlagKey)
if err != nil || len(blob) != 1 {
return StateSyncUnknown
}
return blob[0]
}
// WriteSnapSyncStatusFlag stores the state snap sync status flag into database.
func WriteSnapSyncStatusFlag(db ethdb.KeyValueWriter, flag uint8) {
if err := db.Put(snapSyncStatusFlagKey, []byte{flag}); err != nil {
log.Crit("Failed to store sync status flag", "err", err)
}
}
core/rawdb/database.go
+1 -1
View File
@@ -555,7 +555,7 @@ func InspectDatabase(db ethdb.Database, keyPrefix, keyStart []byte) error {
lastPivotKey, fastTrieProgressKey, snapshotDisabledKey, SnapshotRootKey, snapshotJournalKey,
snapshotGeneratorKey, snapshotRecoveryKey, txIndexTailKey, fastTxLookupLimitKey,
uncleanShutdownKey, badBlockKey, transitionStatusKey, skeletonSyncStatusKey,
persistentStateIDKey, trieJournalKey, snapshotSyncStatusKey,
persistentStateIDKey, trieJournalKey, snapshotSyncStatusKey, snapSyncStatusFlagKey,
} {
if bytes.Equal(key, meta) {
metadata.Add(size)
core/rawdb/schema.go
+3
View File
@@ -91,6 +91,9 @@ var (
// transitionStatusKey tracks the eth2 transition status.
transitionStatusKey = []byte("eth2-transition")
// snapSyncStatusFlagKey flags that status of snap sync.
snapSyncStatusFlagKey = []byte("SnapSyncStatus")
// Data item prefixes (use single byte to avoid mixing data types, avoid `i`, used for indexes).
headerPrefix = []byte("h") // headerPrefix + num (uint64 big endian) + hash -> header
headerTDSuffix = []byte("t") // headerPrefix + num (uint64 big endian) + hash + headerTDSuffix -> td
core/txpool/blobpool/blobpool.go
+6
View File
@@ -355,7 +355,13 @@ func (p *BlobPool) Init(gasTip *big.Int, head *types.Header, reserve txpool.Addr
return err
}
}
// Initialize the state with head block, or fallback to empty one in
// case the head state is not available(might occur when node is not
// fully synced).
state, err := p.chain.StateAt(head.Root)
if err != nil {
state, err = p.chain.StateAt(types.EmptyRootHash)
}
if err != nil {
return err
}
core/txpool/legacypool/legacypool.go
+14 -1
View File
@@ -298,7 +298,20 @@ func (pool *LegacyPool) Init(gasTip *big.Int, head *types.Header, reserve txpool
// Set the basic pool parameters
pool.gasTip.Store(gasTip)
pool.reset(nil, head)
// Initialize the state with head block, or fallback to empty one in
// case the head state is not available(might occur when node is not
// fully synced).
statedb, err := pool.chain.StateAt(head.Root)
if err != nil {
statedb, err = pool.chain.StateAt(types.EmptyRootHash)
}
if err != nil {
return err
}
pool.currentHead.Store(head)
pool.currentState = statedb
pool.pendingNonces = newNoncer(statedb)
// Start the reorg loop early, so it can handle requests generated during
// journal loading.