diff --git a/cmd/geth/snapshot.go b/cmd/geth/snapshot.go index e8f6a3543..1af458af2 100644 --- a/cmd/geth/snapshot.go +++ b/cmd/geth/snapshot.go @@ -155,7 +155,7 @@ func pruneState(ctx *cli.Context) error { chaindb := utils.MakeChainDatabase(ctx, stack, false) pruner, err := pruner.NewPruner(chaindb, stack.ResolvePath(""), stack.ResolvePath(config.Eth.TrieCleanCacheJournal), ctx.GlobalUint64(utils.BloomFilterSizeFlag.Name)) if err != nil { - log.Error("Failed to open snapshot tree", "error", err) + log.Error("Failed to open snapshot tree", "err", err) return err } if ctx.NArg() > 1 { @@ -166,12 +166,12 @@ func pruneState(ctx *cli.Context) error { if ctx.NArg() == 1 { targetRoot, err = parseRoot(ctx.Args()[0]) if err != nil { - log.Error("Failed to resolve state root", "error", err) + log.Error("Failed to resolve state root", "err", err) return err } } if err = pruner.Prune(targetRoot); err != nil { - log.Error("Failed to prune state", "error", err) + log.Error("Failed to prune state", "err", err) return err } return nil @@ -189,7 +189,7 @@ func verifyState(ctx *cli.Context) error { } snaptree, err := snapshot.New(chaindb, trie.NewDatabase(chaindb), 256, headBlock.Root(), false, false, false) if err != nil { - log.Error("Failed to open snapshot tree", "error", err) + log.Error("Failed to open snapshot tree", "err", err) return err } if ctx.NArg() > 1 { @@ -200,15 +200,15 @@ func verifyState(ctx *cli.Context) error { if ctx.NArg() == 1 { root, err = parseRoot(ctx.Args()[0]) if err != nil { - log.Error("Failed to resolve state root", "error", err) + log.Error("Failed to resolve state root", "err", err) return err } } if err := snaptree.Verify(root); err != nil { - log.Error("Failed to verfiy state", "error", err) + log.Error("Failed to verfiy state", "root", root, "err", err) return err } - log.Info("Verified the state") + log.Info("Verified the state", "root", root) return nil } @@ -236,7 +236,7 @@ func traverseState(ctx *cli.Context) error { if ctx.NArg() == 1 { root, err = parseRoot(ctx.Args()[0]) if err != nil { - log.Error("Failed to resolve state root", "error", err) + log.Error("Failed to resolve state root", "err", err) return err } log.Info("Start traversing the state", "root", root) @@ -247,7 +247,7 @@ func traverseState(ctx *cli.Context) error { triedb := trie.NewDatabase(chaindb) t, err := trie.NewSecure(root, triedb) if err != nil { - log.Error("Failed to open trie", "root", root, "error", err) + log.Error("Failed to open trie", "root", root, "err", err) return err } var ( @@ -262,13 +262,13 @@ func traverseState(ctx *cli.Context) error { accounts += 1 var acc state.Account if err := rlp.DecodeBytes(accIter.Value, &acc); err != nil { - log.Error("Invalid account encountered during traversal", "error", err) + log.Error("Invalid account encountered during traversal", "err", err) return err } if acc.Root != emptyRoot { storageTrie, err := trie.NewSecure(acc.Root, triedb) if err != nil { - log.Error("Failed to open storage trie", "root", acc.Root, "error", err) + log.Error("Failed to open storage trie", "root", acc.Root, "err", err) return err } storageIter := trie.NewIterator(storageTrie.NodeIterator(nil)) @@ -276,7 +276,7 @@ func traverseState(ctx *cli.Context) error { slots += 1 } if storageIter.Err != nil { - log.Error("Failed to traverse storage trie", "root", acc.Root, "error", storageIter.Err) + log.Error("Failed to traverse storage trie", "root", acc.Root, "err", storageIter.Err) return storageIter.Err } } @@ -294,7 +294,7 @@ func traverseState(ctx *cli.Context) error { } } if accIter.Err != nil { - log.Error("Failed to traverse state trie", "root", root, "error", accIter.Err) + log.Error("Failed to traverse state trie", "root", root, "err", accIter.Err) return accIter.Err } log.Info("State is complete", "accounts", accounts, "slots", slots, "codes", codes, "elapsed", common.PrettyDuration(time.Since(start))) @@ -326,7 +326,7 @@ func traverseRawState(ctx *cli.Context) error { if ctx.NArg() == 1 { root, err = parseRoot(ctx.Args()[0]) if err != nil { - log.Error("Failed to resolve state root", "error", err) + log.Error("Failed to resolve state root", "err", err) return err } log.Info("Start traversing the state", "root", root) @@ -337,7 +337,7 @@ func traverseRawState(ctx *cli.Context) error { triedb := trie.NewDatabase(chaindb) t, err := trie.NewSecure(root, triedb) if err != nil { - log.Error("Failed to open trie", "root", root, "error", err) + log.Error("Failed to open trie", "root", root, "err", err) return err } var ( @@ -368,13 +368,13 @@ func traverseRawState(ctx *cli.Context) error { accounts += 1 var acc state.Account if err := rlp.DecodeBytes(accIter.LeafBlob(), &acc); err != nil { - log.Error("Invalid account encountered during traversal", "error", err) + log.Error("Invalid account encountered during traversal", "err", err) return errors.New("invalid account") } if acc.Root != emptyRoot { storageTrie, err := trie.NewSecure(acc.Root, triedb) if err != nil { - log.Error("Failed to open storage trie", "root", acc.Root, "error", err) + log.Error("Failed to open storage trie", "root", acc.Root, "err", err) return errors.New("missing storage trie") } storageIter := storageTrie.NodeIterator(nil) @@ -397,7 +397,7 @@ func traverseRawState(ctx *cli.Context) error { } } if storageIter.Error() != nil { - log.Error("Failed to traverse storage trie", "root", acc.Root, "error", storageIter.Error()) + log.Error("Failed to traverse storage trie", "root", acc.Root, "err", storageIter.Error()) return storageIter.Error() } } @@ -416,7 +416,7 @@ func traverseRawState(ctx *cli.Context) error { } } if accIter.Error() != nil { - log.Error("Failed to traverse state trie", "root", root, "error", accIter.Error()) + log.Error("Failed to traverse state trie", "root", root, "err", accIter.Error()) return accIter.Error() } log.Info("State is complete", "nodes", nodes, "accounts", accounts, "slots", slots, "codes", codes, "elapsed", common.PrettyDuration(time.Since(start))) diff --git a/core/state/snapshot/conversion.go b/core/state/snapshot/conversion.go index bb87ecddf..f70cbf1e6 100644 --- a/core/state/snapshot/conversion.go +++ b/core/state/snapshot/conversion.go @@ -322,7 +322,7 @@ func generateTrieRoot(db ethdb.KeyValueWriter, it Iterator, account common.Hash, return } if !bytes.Equal(account.Root, subroot.Bytes()) { - results <- fmt.Errorf("invalid subroot(%x), want %x, got %x", it.Hash(), account.Root, subroot) + results <- fmt.Errorf("invalid subroot(path %x), want %x, have %x", hash, account.Root, subroot) return } results <- nil diff --git a/core/state/snapshot/generate.go b/core/state/snapshot/generate.go index 2b41dd551..98c8d42a1 100644 --- a/core/state/snapshot/generate.go +++ b/core/state/snapshot/generate.go @@ -19,17 +19,20 @@ package snapshot import ( "bytes" "encoding/binary" + "errors" "fmt" "math/big" "time" "github.com/VictoriaMetrics/fastcache" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/common/math" "github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/trie" ) @@ -40,17 +43,63 @@ var ( // emptyCode is the known hash of the empty EVM bytecode. emptyCode = crypto.Keccak256Hash(nil) + + // accountCheckRange is the upper limit of the number of accounts involved in + // each range check. This is a value estimated based on experience. If this + // value is too large, the failure rate of range prove will increase. Otherwise + // the the value is too small, the efficiency of the state recovery will decrease. + accountCheckRange = 128 + + // storageCheckRange is the upper limit of the number of storage slots involved + // in each range check. This is a value estimated based on experience. If this + // value is too large, the failure rate of range prove will increase. Otherwise + // the the value is too small, the efficiency of the state recovery will decrease. + storageCheckRange = 1024 + + // errMissingTrie is returned if the target trie is missing while the generation + // is running. In this case the generation is aborted and wait the new signal. + errMissingTrie = errors.New("missing trie") +) + +// Metrics in generation +var ( + snapGeneratedAccountMeter = metrics.NewRegisteredMeter("state/snapshot/generation/account/generated", nil) + snapRecoveredAccountMeter = metrics.NewRegisteredMeter("state/snapshot/generation/account/recovered", nil) + snapWipedAccountMeter = metrics.NewRegisteredMeter("state/snapshot/generation/account/wiped", nil) + snapMissallAccountMeter = metrics.NewRegisteredMeter("state/snapshot/generation/account/missall", nil) + snapGeneratedStorageMeter = metrics.NewRegisteredMeter("state/snapshot/generation/storage/generated", nil) + snapRecoveredStorageMeter = metrics.NewRegisteredMeter("state/snapshot/generation/storage/recovered", nil) + snapWipedStorageMeter = metrics.NewRegisteredMeter("state/snapshot/generation/storage/wiped", nil) + snapMissallStorageMeter = metrics.NewRegisteredMeter("state/snapshot/generation/storage/missall", nil) + snapSuccessfulRangeProofMeter = metrics.NewRegisteredMeter("state/snapshot/generation/proof/success", nil) + snapFailedRangeProofMeter = metrics.NewRegisteredMeter("state/snapshot/generation/proof/failure", nil) + + // snapAccountProveCounter measures time spent on the account proving + snapAccountProveCounter = metrics.NewRegisteredCounter("state/snapshot/generation/duration/account/prove", nil) + // snapAccountTrieReadCounter measures time spent on the account trie iteration + snapAccountTrieReadCounter = metrics.NewRegisteredCounter("state/snapshot/generation/duration/account/trieread", nil) + // snapAccountSnapReadCounter measues time spent on the snapshot account iteration + snapAccountSnapReadCounter = metrics.NewRegisteredCounter("state/snapshot/generation/duration/account/snapread", nil) + // snapAccountWriteCounter measures time spent on writing/updating/deleting accounts + snapAccountWriteCounter = metrics.NewRegisteredCounter("state/snapshot/generation/duration/account/write", nil) + // snapStorageProveCounter measures time spent on storage proving + snapStorageProveCounter = metrics.NewRegisteredCounter("state/snapshot/generation/duration/storage/prove", nil) + // snapStorageTrieReadCounter measures time spent on the storage trie iteration + snapStorageTrieReadCounter = metrics.NewRegisteredCounter("state/snapshot/generation/duration/storage/trieread", nil) + // snapStorageSnapReadCounter measures time spent on the snapshot storage iteration + snapStorageSnapReadCounter = metrics.NewRegisteredCounter("state/snapshot/generation/duration/storage/snapread", nil) + // snapStorageWriteCounter measures time spent on writing/updating/deleting storages + snapStorageWriteCounter = metrics.NewRegisteredCounter("state/snapshot/generation/duration/storage/write", nil) ) // generatorStats is a collection of statistics gathered by the snapshot generator // for logging purposes. type generatorStats struct { - wiping chan struct{} // Notification channel if wiping is in progress origin uint64 // Origin prefix where generation started start time.Time // Timestamp when generation started - accounts uint64 // Number of accounts indexed - slots uint64 // Number of storage slots indexed - storage common.StorageSize // Account and storage slot size + accounts uint64 // Number of accounts indexed(generated or recovered) + slots uint64 // Number of storage slots indexed(generated or recovered) + storage common.StorageSize // Total account and storage slot size(generation or recovery) } // Log creates an contextual log with the given message and the context pulled @@ -91,25 +140,30 @@ func (gs *generatorStats) Log(msg string, root common.Hash, marker []byte) { log.Info(msg, ctx...) } +// ClearSnapshotMarker sets the snapshot marker to zero, meaning that snapshots +// are not usable. +func ClearSnapshotMarker(diskdb ethdb.KeyValueStore) { + batch := diskdb.NewBatch() + journalProgress(batch, []byte{}, nil) + if err := batch.Write(); err != nil { + log.Crit("Failed to write initialized state marker", "err", err) + } +} + // generateSnapshot regenerates a brand new snapshot based on an existing state // database and head block asynchronously. The snapshot is returned immediately // and generation is continued in the background until done. -func generateSnapshot(diskdb ethdb.KeyValueStore, triedb *trie.Database, cache int, root common.Hash, wiper chan struct{}) *diskLayer { - // Wipe any previously existing snapshot from the database if no wiper is - // currently in progress. - if wiper == nil { - wiper = wipeSnapshot(diskdb, true) - } +func generateSnapshot(diskdb ethdb.KeyValueStore, triedb *trie.Database, cache int, root common.Hash) *diskLayer { // Create a new disk layer with an initialized state marker at zero var ( - stats = &generatorStats{wiping: wiper, start: time.Now()} + stats = &generatorStats{start: time.Now()} batch = diskdb.NewBatch() genMarker = []byte{} // Initialized but empty! ) rawdb.WriteSnapshotRoot(batch, root) journalProgress(batch, genMarker, stats) if err := batch.Write(); err != nil { - log.Crit("Failed to write initialized state marker", "error", err) + log.Crit("Failed to write initialized state marker", "err", err) } base := &diskLayer{ diskdb: diskdb, @@ -135,7 +189,6 @@ func journalProgress(db ethdb.KeyValueWriter, marker []byte, stats *generatorSta Marker: marker, } if stats != nil { - entry.Wiping = (stats.wiping != nil) entry.Accounts = stats.accounts entry.Slots = stats.slots entry.Storage = uint64(stats.storage) @@ -159,169 +212,521 @@ func journalProgress(db ethdb.KeyValueWriter, marker []byte, stats *generatorSta rawdb.WriteSnapshotGenerator(db, blob) } +// proofResult contains the output of range proving which can be used +// for further processing regardless if it is successful or not. +type proofResult struct { + keys [][]byte // The key set of all elements being iterated, even proving is failed + vals [][]byte // The val set of all elements being iterated, even proving is failed + diskMore bool // Set when the database has extra snapshot states since last iteration + trieMore bool // Set when the trie has extra snapshot states(only meaningful for successful proving) + proofErr error // Indicator whether the given state range is valid or not + tr *trie.Trie // The trie, in case the trie was resolved by the prover (may be nil) +} + +// valid returns the indicator that range proof is successful or not. +func (result *proofResult) valid() bool { + return result.proofErr == nil +} + +// last returns the last verified element key regardless of whether the range proof is +// successful or not. Nil is returned if nothing involved in the proving. +func (result *proofResult) last() []byte { + var last []byte + if len(result.keys) > 0 { + last = result.keys[len(result.keys)-1] + } + return last +} + +// forEach iterates all the visited elements and applies the given callback on them. +// The iteration is aborted if the callback returns non-nil error. +func (result *proofResult) forEach(callback func(key []byte, val []byte) error) error { + for i := 0; i < len(result.keys); i++ { + key, val := result.keys[i], result.vals[i] + if err := callback(key, val); err != nil { + return err + } + } + return nil +} + +// proveRange proves the snapshot segment with particular prefix is "valid". +// The iteration start point will be assigned if the iterator is restored from +// the last interruption. Max will be assigned in order to limit the maximum +// amount of data involved in each iteration. +// +// The proof result will be returned if the range proving is finished, otherwise +// the error will be returned to abort the entire procedure. +func (dl *diskLayer) proveRange(stats *generatorStats, root common.Hash, prefix []byte, kind string, origin []byte, max int, valueConvertFn func([]byte) ([]byte, error)) (*proofResult, error) { + var ( + keys [][]byte + vals [][]byte + proof = rawdb.NewMemoryDatabase() + diskMore = false + ) + iter := dl.diskdb.NewIterator(prefix, origin) + defer iter.Release() + + var start = time.Now() + for iter.Next() { + key := iter.Key() + if len(key) != len(prefix)+common.HashLength { + continue + } + if len(keys) == max { + // Break if we've reached the max size, and signal that we're not + // done yet. + diskMore = true + break + } + keys = append(keys, common.CopyBytes(key[len(prefix):])) + + if valueConvertFn == nil { + vals = append(vals, common.CopyBytes(iter.Value())) + } else { + val, err := valueConvertFn(iter.Value()) + if err != nil { + // Special case, the state data is corrupted (invalid slim-format account), + // don't abort the entire procedure directly. Instead, let the fallback + // generation to heal the invalid data. + // + // Here append the original value to ensure that the number of key and + // value are the same. + vals = append(vals, common.CopyBytes(iter.Value())) + log.Error("Failed to convert account state data", "err", err) + } else { + vals = append(vals, val) + } + } + } + // Update metrics for database iteration and merkle proving + if kind == "storage" { + snapStorageSnapReadCounter.Inc(time.Since(start).Nanoseconds()) + } else { + snapAccountSnapReadCounter.Inc(time.Since(start).Nanoseconds()) + } + defer func(start time.Time) { + if kind == "storage" { + snapStorageProveCounter.Inc(time.Since(start).Nanoseconds()) + } else { + snapAccountProveCounter.Inc(time.Since(start).Nanoseconds()) + } + }(time.Now()) + + // The snap state is exhausted, pass the entire key/val set for verification + if origin == nil && !diskMore { + stackTr := trie.NewStackTrie(nil) + for i, key := range keys { + stackTr.TryUpdate(key, common.CopyBytes(vals[i])) + } + if gotRoot := stackTr.Hash(); gotRoot != root { + return &proofResult{ + keys: keys, + vals: vals, + proofErr: fmt.Errorf("wrong root: have %#x want %#x", gotRoot, root), + }, nil + } + return &proofResult{keys: keys, vals: vals}, nil + } + // Snap state is chunked, generate edge proofs for verification. + tr, err := trie.New(root, dl.triedb) + if err != nil { + stats.Log("Trie missing, state snapshotting paused", dl.root, dl.genMarker) + return nil, errMissingTrie + } + // Firstly find out the key of last iterated element. + var last []byte + if len(keys) > 0 { + last = keys[len(keys)-1] + } + // Generate the Merkle proofs for the first and last element + if origin == nil { + origin = common.Hash{}.Bytes() + } + if err := tr.Prove(origin, 0, proof); err != nil { + log.Debug("Failed to prove range", "kind", kind, "origin", origin, "err", err) + return &proofResult{ + keys: keys, + vals: vals, + diskMore: diskMore, + proofErr: err, + tr: tr, + }, nil + } + if last != nil { + if err := tr.Prove(last, 0, proof); err != nil { + log.Debug("Failed to prove range", "kind", kind, "last", last, "err", err) + return &proofResult{ + keys: keys, + vals: vals, + diskMore: diskMore, + proofErr: err, + tr: tr, + }, nil + } + } + // Verify the snapshot segment with range prover, ensure that all flat states + // in this range correspond to merkle trie. + _, _, _, cont, err := trie.VerifyRangeProof(root, origin, last, keys, vals, proof) + return &proofResult{ + keys: keys, + vals: vals, + diskMore: diskMore, + trieMore: cont, + proofErr: err, + tr: tr}, + nil +} + +// onStateCallback is a function that is called by generateRange, when processing a range of +// accounts or storage slots. For each element, the callback is invoked. +// If 'delete' is true, then this element (and potential slots) needs to be deleted from the snapshot. +// If 'write' is true, then this element needs to be updated with the 'val'. +// If 'write' is false, then this element is already correct, and needs no update. However, +// for accounts, the storage trie of the account needs to be checked. +// The 'val' is the canonical encoding of the value (not the slim format for accounts) +type onStateCallback func(key []byte, val []byte, write bool, delete bool) error + +// generateRange generates the state segment with particular prefix. Generation can +// either verify the correctness of existing state through rangeproof and skip +// generation, or iterate trie to regenerate state on demand. +func (dl *diskLayer) generateRange(root common.Hash, prefix []byte, kind string, origin []byte, max int, stats *generatorStats, onState onStateCallback, valueConvertFn func([]byte) ([]byte, error)) (bool, []byte, error) { + // Use range prover to check the validity of the flat state in the range + result, err := dl.proveRange(stats, root, prefix, kind, origin, max, valueConvertFn) + if err != nil { + return false, nil, err + } + last := result.last() + + // Construct contextual logger + logCtx := []interface{}{"kind", kind, "prefix", hexutil.Encode(prefix)} + if len(origin) > 0 { + logCtx = append(logCtx, "origin", hexutil.Encode(origin)) + } + logger := log.New(logCtx...) + + // The range prover says the range is correct, skip trie iteration + if result.valid() { + snapSuccessfulRangeProofMeter.Mark(1) + logger.Trace("Proved state range", "last", hexutil.Encode(last)) + + // The verification is passed, process each state with the given + // callback function. If this state represents a contract, the + // corresponding storage check will be performed in the callback + if err := result.forEach(func(key []byte, val []byte) error { return onState(key, val, false, false) }); err != nil { + return false, nil, err + } + // Only abort the iteration when both database and trie are exhausted + return !result.diskMore && !result.trieMore, last, nil + } + logger.Trace("Detected outdated state range", "last", hexutil.Encode(last), "err", result.proofErr) + snapFailedRangeProofMeter.Mark(1) + + // Special case, the entire trie is missing. In the original trie scheme, + // all the duplicated subtries will be filter out(only one copy of data + // will be stored). While in the snapshot model, all the storage tries + // belong to different contracts will be kept even they are duplicated. + // Track it to a certain extent remove the noise data used for statistics. + if origin == nil && last == nil { + meter := snapMissallAccountMeter + if kind == "storage" { + meter = snapMissallStorageMeter + } + meter.Mark(1) + } + tr := result.tr + if tr == nil { + tr, err = trie.New(root, dl.triedb) + if err != nil { + stats.Log("Trie missing, state snapshotting paused", dl.root, dl.genMarker) + return false, nil, errMissingTrie + } + } + var ( + trieMore bool + iter = trie.NewIterator(tr.NodeIterator(origin)) + kvkeys, kvvals = result.keys, result.vals + + // counters + count = 0 // number of states delivered by iterator + created = 0 // states created from the trie + updated = 0 // states updated from the trie + deleted = 0 // states not in trie, but were in snapshot + untouched = 0 // states already correct + + // timers + start = time.Now() + internal time.Duration + ) + for iter.Next() { + if last != nil && bytes.Compare(iter.Key, last) > 0 { + trieMore = true + break + } + count++ + write := true + created++ + for len(kvkeys) > 0 { + if cmp := bytes.Compare(kvkeys[0], iter.Key); cmp < 0 { + // delete the key + istart := time.Now() + if err := onState(kvkeys[0], nil, false, true); err != nil { + return false, nil, err + } + kvkeys = kvkeys[1:] + kvvals = kvvals[1:] + deleted++ + internal += time.Since(istart) + continue + } else if cmp == 0 { + // the snapshot key can be overwritten + created-- + if write = !bytes.Equal(kvvals[0], iter.Value); write { + updated++ + } else { + untouched++ + } + kvkeys = kvkeys[1:] + kvvals = kvvals[1:] + } + break + } + istart := time.Now() + if err := onState(iter.Key, iter.Value, write, false); err != nil { + return false, nil, err + } + internal += time.Since(istart) + } + if iter.Err != nil { + return false, nil, iter.Err + } + // Delete all stale snapshot states remaining + istart := time.Now() + for _, key := range kvkeys { + if err := onState(key, nil, false, true); err != nil { + return false, nil, err + } + deleted += 1 + } + internal += time.Since(istart) + + // Update metrics for counting trie iteration + if kind == "storage" { + snapStorageTrieReadCounter.Inc((time.Since(start) - internal).Nanoseconds()) + } else { + snapAccountTrieReadCounter.Inc((time.Since(start) - internal).Nanoseconds()) + } + logger.Debug("Regenerated state range", "root", root, "last", hexutil.Encode(last), + "count", count, "created", created, "updated", updated, "untouched", untouched, "deleted", deleted) + + // If there are either more trie items, or there are more snap items + // (in the next segment), then we need to keep working + return !trieMore && !result.diskMore, last, nil +} + // generate is a background thread that iterates over the state and storage tries, // constructing the state snapshot. All the arguments are purely for statistics // gathering and logging, since the method surfs the blocks as they arrive, often // being restarted. func (dl *diskLayer) generate(stats *generatorStats) { - // If a database wipe is in operation, wait until it's done - if stats.wiping != nil { - stats.Log("Wiper running, state snapshotting paused", common.Hash{}, dl.genMarker) - select { - // If wiper is done, resume normal mode of operation - case <-stats.wiping: - stats.wiping = nil - stats.start = time.Now() - - // If generator was aborted during wipe, return - case abort := <-dl.genAbort: - abort <- stats - return - } - } - // Create an account and state iterator pointing to the current generator marker - accTrie, err := trie.NewSecure(dl.root, dl.triedb) - if err != nil { - // The account trie is missing (GC), surf the chain until one becomes available - stats.Log("Trie missing, state snapshotting paused", dl.root, dl.genMarker) - - abort := <-dl.genAbort - abort <- stats - return + var ( + accMarker []byte + accountRange = accountCheckRange + ) + if len(dl.genMarker) > 0 { // []byte{} is the start, use nil for that + // Always reset the initial account range as 1 + // whenever recover from the interruption. + accMarker, accountRange = dl.genMarker[:common.HashLength], 1 } + var ( + batch = dl.diskdb.NewBatch() + logged = time.Now() + accOrigin = common.CopyBytes(accMarker) + abort chan *generatorStats + ) stats.Log("Resuming state snapshot generation", dl.root, dl.genMarker) - var accMarker []byte - if len(dl.genMarker) > 0 { // []byte{} is the start, use nil for that - accMarker = dl.genMarker[:common.HashLength] + checkAndFlush := func(currentLocation []byte) error { + select { + case abort = <-dl.genAbort: + default: + } + if batch.ValueSize() > ethdb.IdealBatchSize || abort != nil { + // Flush out the batch anyway no matter it's empty or not. + // It's possible that all the states are recovered and the + // generation indeed makes progress. + journalProgress(batch, currentLocation, stats) + + if err := batch.Write(); err != nil { + return err + } + batch.Reset() + + dl.lock.Lock() + dl.genMarker = currentLocation + dl.lock.Unlock() + + if abort != nil { + stats.Log("Aborting state snapshot generation", dl.root, currentLocation) + return errors.New("aborted") + } + } + if time.Since(logged) > 8*time.Second { + stats.Log("Generating state snapshot", dl.root, currentLocation) + logged = time.Now() + } + return nil } - accIt := trie.NewIterator(accTrie.NodeIterator(accMarker)) - batch := dl.diskdb.NewBatch() - // Iterate from the previous marker and continue generating the state snapshot - logged := time.Now() - for accIt.Next() { + onAccount := func(key []byte, val []byte, write bool, delete bool) error { + var ( + start = time.Now() + accountHash = common.BytesToHash(key) + ) + if delete { + rawdb.DeleteAccountSnapshot(batch, accountHash) + snapWipedAccountMeter.Mark(1) + + // Ensure that any previous snapshot storage values are cleared + prefix := append(rawdb.SnapshotStoragePrefix, accountHash.Bytes()...) + keyLen := len(rawdb.SnapshotStoragePrefix) + 2*common.HashLength + if err := wipeKeyRange(dl.diskdb, "storage", prefix, nil, nil, keyLen, snapWipedStorageMeter, false); err != nil { + return err + } + snapAccountWriteCounter.Inc(time.Since(start).Nanoseconds()) + return nil + } // Retrieve the current account and flatten it into the internal format - accountHash := common.BytesToHash(accIt.Key) - var acc struct { Nonce uint64 Balance *big.Int Root common.Hash CodeHash []byte } - if err := rlp.DecodeBytes(accIt.Value, &acc); err != nil { + if err := rlp.DecodeBytes(val, &acc); err != nil { log.Crit("Invalid account encountered during snapshot creation", "err", err) } - data := SlimAccountRLP(acc.Nonce, acc.Balance, acc.Root, acc.CodeHash) - // If the account is not yet in-progress, write it out if accMarker == nil || !bytes.Equal(accountHash[:], accMarker) { - rawdb.WriteAccountSnapshot(batch, accountHash, data) - stats.storage += common.StorageSize(1 + common.HashLength + len(data)) + dataLen := len(val) // Approximate size, saves us a round of RLP-encoding + if !write { + if bytes.Equal(acc.CodeHash, emptyCode[:]) { + dataLen -= 32 + } + if acc.Root == emptyRoot { + dataLen -= 32 + } + snapRecoveredAccountMeter.Mark(1) + } else { + data := SlimAccountRLP(acc.Nonce, acc.Balance, acc.Root, acc.CodeHash) + dataLen = len(data) + rawdb.WriteAccountSnapshot(batch, accountHash, data) + snapGeneratedAccountMeter.Mark(1) + } + stats.storage += common.StorageSize(1 + common.HashLength + dataLen) stats.accounts++ } // If we've exceeded our batch allowance or termination was requested, flush to disk - var abort chan *generatorStats - select { - case abort = <-dl.genAbort: - default: + if err := checkAndFlush(accountHash[:]); err != nil { + return err } - if batch.ValueSize() > ethdb.IdealBatchSize || abort != nil { - // Only write and set the marker if we actually did something useful - if batch.ValueSize() > 0 { - // Ensure the generator entry is in sync with the data - marker := accountHash[:] - journalProgress(batch, marker, stats) + // If the iterated account is the contract, create a further loop to + // verify or regenerate the contract storage. + if acc.Root == emptyRoot { + // If the root is empty, we still need to ensure that any previous snapshot + // storage values are cleared + // TODO: investigate if this can be avoided, this will be very costly since it + // affects every single EOA account + // - Perhaps we can avoid if where codeHash is emptyCode + prefix := append(rawdb.SnapshotStoragePrefix, accountHash.Bytes()...) + keyLen := len(rawdb.SnapshotStoragePrefix) + 2*common.HashLength + if err := wipeKeyRange(dl.diskdb, "storage", prefix, nil, nil, keyLen, snapWipedStorageMeter, false); err != nil { + return err + } + snapAccountWriteCounter.Inc(time.Since(start).Nanoseconds()) + } else { + snapAccountWriteCounter.Inc(time.Since(start).Nanoseconds()) - batch.Write() - batch.Reset() - - dl.lock.Lock() - dl.genMarker = marker - dl.lock.Unlock() - } - if abort != nil { - stats.Log("Aborting state snapshot generation", dl.root, accountHash[:]) - abort <- stats - return - } - } - // If the account is in-progress, continue where we left off (otherwise iterate all) - if acc.Root != emptyRoot { - storeTrie, err := trie.NewSecure(acc.Root, dl.triedb) - if err != nil { - log.Error("Generator failed to access storage trie", "root", dl.root, "account", accountHash, "stroot", acc.Root, "err", err) - abort := <-dl.genAbort - abort <- stats - return - } var storeMarker []byte if accMarker != nil && bytes.Equal(accountHash[:], accMarker) && len(dl.genMarker) > common.HashLength { storeMarker = dl.genMarker[common.HashLength:] } - storeIt := trie.NewIterator(storeTrie.NodeIterator(storeMarker)) - for storeIt.Next() { - rawdb.WriteStorageSnapshot(batch, accountHash, common.BytesToHash(storeIt.Key), storeIt.Value) - stats.storage += common.StorageSize(1 + 2*common.HashLength + len(storeIt.Value)) + onStorage := func(key []byte, val []byte, write bool, delete bool) error { + defer func(start time.Time) { + snapStorageWriteCounter.Inc(time.Since(start).Nanoseconds()) + }(time.Now()) + + if delete { + rawdb.DeleteStorageSnapshot(batch, accountHash, common.BytesToHash(key)) + snapWipedStorageMeter.Mark(1) + return nil + } + if write { + rawdb.WriteStorageSnapshot(batch, accountHash, common.BytesToHash(key), val) + snapGeneratedStorageMeter.Mark(1) + } else { + snapRecoveredStorageMeter.Mark(1) + } + stats.storage += common.StorageSize(1 + 2*common.HashLength + len(val)) stats.slots++ // If we've exceeded our batch allowance or termination was requested, flush to disk - var abort chan *generatorStats - select { - case abort = <-dl.genAbort: - default: + if err := checkAndFlush(append(accountHash[:], key...)); err != nil { + return err } - if batch.ValueSize() > ethdb.IdealBatchSize || abort != nil { - // Only write and set the marker if we actually did something useful - if batch.ValueSize() > 0 { - // Ensure the generator entry is in sync with the data - marker := append(accountHash[:], storeIt.Key...) - journalProgress(batch, marker, stats) - - batch.Write() - batch.Reset() - - dl.lock.Lock() - dl.genMarker = marker - dl.lock.Unlock() - } - if abort != nil { - stats.Log("Aborting state snapshot generation", dl.root, append(accountHash[:], storeIt.Key...)) - abort <- stats - return - } - if time.Since(logged) > 8*time.Second { - stats.Log("Generating state snapshot", dl.root, append(accountHash[:], storeIt.Key...)) - logged = time.Now() - } + return nil + } + var storeOrigin = common.CopyBytes(storeMarker) + for { + exhausted, last, err := dl.generateRange(acc.Root, append(rawdb.SnapshotStoragePrefix, accountHash.Bytes()...), "storage", storeOrigin, storageCheckRange, stats, onStorage, nil) + if err != nil { + return err + } + if exhausted { + break + } + if storeOrigin = increaseKey(last); storeOrigin == nil { + break // special case, the last is 0xffffffff...fff } } - if err := storeIt.Err; err != nil { - log.Error("Generator failed to iterate storage trie", "accroot", dl.root, "acchash", common.BytesToHash(accIt.Key), "stroot", acc.Root, "err", err) - abort := <-dl.genAbort - abort <- stats - return - } - } - if time.Since(logged) > 8*time.Second { - stats.Log("Generating state snapshot", dl.root, accIt.Key) - logged = time.Now() } // Some account processed, unmark the marker accMarker = nil + return nil } - if err := accIt.Err; err != nil { - log.Error("Generator failed to iterate account trie", "root", dl.root, "err", err) - abort := <-dl.genAbort - abort <- stats - return + + // Global loop for regerating the entire state trie + all layered storage tries. + for { + exhausted, last, err := dl.generateRange(dl.root, rawdb.SnapshotAccountPrefix, "account", accOrigin, accountRange, stats, onAccount, FullAccountRLP) + // The procedure it aborted, either by external signal or internal error + if err != nil { + if abort == nil { // aborted by internal error, wait the signal + abort = <-dl.genAbort + } + abort <- stats + return + } + // Abort the procedure if the entire snapshot is generated + if exhausted { + break + } + if accOrigin = increaseKey(last); accOrigin == nil { + break // special case, the last is 0xffffffff...fff + } + accountRange = accountCheckRange } // Snapshot fully generated, set the marker to nil. // Note even there is nothing to commit, persist the // generator anyway to mark the snapshot is complete. journalProgress(batch, nil, stats) - batch.Write() + if err := batch.Write(); err != nil { + log.Error("Failed to flush batch", "err", err) + + abort = <-dl.genAbort + abort <- stats + return + } + batch.Reset() log.Info("Generated state snapshot", "accounts", stats.accounts, "slots", stats.slots, "storage", stats.storage, "elapsed", common.PrettyDuration(time.Since(stats.start))) @@ -332,6 +737,18 @@ func (dl *diskLayer) generate(stats *generatorStats) { dl.lock.Unlock() // Someone will be looking for us, wait it out - abort := <-dl.genAbort + abort = <-dl.genAbort abort <- nil } + +// increaseKey increase the input key by one bit. Return nil if the entire +// addition operation overflows, +func increaseKey(key []byte) []byte { + for i := len(key) - 1; i >= 0; i-- { + key[i]++ + if key[i] != 0x0 { + return key + } + } + return nil +} diff --git a/core/state/snapshot/generate_test.go b/core/state/snapshot/generate_test.go index 03263f397..3a669085f 100644 --- a/core/state/snapshot/generate_test.go +++ b/core/state/snapshot/generate_test.go @@ -17,16 +17,361 @@ package snapshot import ( + "fmt" "math/big" + "os" "testing" "time" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/rawdb" + "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/ethdb/memorydb" + "github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/trie" + "golang.org/x/crypto/sha3" ) +// Tests that snapshot generation from an empty database. +func TestGeneration(t *testing.T) { + // We can't use statedb to make a test trie (circular dependency), so make + // a fake one manually. We're going with a small account trie of 3 accounts, + // two of which also has the same 3-slot storage trie attached. + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + stTrie, _ := trie.NewSecure(common.Hash{}, triedb) + stTrie.Update([]byte("key-1"), []byte("val-1")) // 0x1314700b81afc49f94db3623ef1df38f3ed18b73a1b7ea2f6c095118cf6118a0 + stTrie.Update([]byte("key-2"), []byte("val-2")) // 0x18a0f4d79cff4459642dd7604f303886ad9d77c30cf3d7d7cedb3a693ab6d371 + stTrie.Update([]byte("key-3"), []byte("val-3")) // 0x51c71a47af0695957647fb68766d0becee77e953df17c29b3c2f25436f055c78 + stTrie.Commit(nil) // Root: 0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67 + + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + + acc = &Account{Balance: big.NewInt(2), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-2"), val) // 0x65145f923027566669a1ae5ccac66f945b55ff6eaeb17d2ea8e048b7d381f2d7 + + acc = &Account{Balance: big.NewInt(3), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-3"), val) // 0x50815097425d000edfc8b3a4a13e175fc2bdcfee8bdfbf2d1ff61041d3c235b2 + root, _ := accTrie.Commit(nil) // Root: 0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd + triedb.Commit(root, false, nil) + + if have, want := root, common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd"); have != want { + t.Fatalf("have %#x want %#x", have, want) + } + snap := generateSnapshot(diskdb, triedb, 16, root) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop +} + +func hashData(input []byte) common.Hash { + var hasher = sha3.NewLegacyKeccak256() + var hash common.Hash + hasher.Reset() + hasher.Write(input) + hasher.Sum(hash[:0]) + return hash +} + +// Tests that snapshot generation with existent flat state. +func TestGenerateExistentState(t *testing.T) { + // We can't use statedb to make a test trie (circular dependency), so make + // a fake one manually. We're going with a small account trie of 3 accounts, + // two of which also has the same 3-slot storage trie attached. + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + stTrie, _ := trie.NewSecure(common.Hash{}, triedb) + stTrie.Update([]byte("key-1"), []byte("val-1")) // 0x1314700b81afc49f94db3623ef1df38f3ed18b73a1b7ea2f6c095118cf6118a0 + stTrie.Update([]byte("key-2"), []byte("val-2")) // 0x18a0f4d79cff4459642dd7604f303886ad9d77c30cf3d7d7cedb3a693ab6d371 + stTrie.Update([]byte("key-3"), []byte("val-3")) // 0x51c71a47af0695957647fb68766d0becee77e953df17c29b3c2f25436f055c78 + stTrie.Commit(nil) // Root: 0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67 + + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + rawdb.WriteAccountSnapshot(diskdb, hashData([]byte("acc-1")), val) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-1")), hashData([]byte("key-1")), []byte("val-1")) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-1")), hashData([]byte("key-2")), []byte("val-2")) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-1")), hashData([]byte("key-3")), []byte("val-3")) + + acc = &Account{Balance: big.NewInt(2), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-2"), val) // 0x65145f923027566669a1ae5ccac66f945b55ff6eaeb17d2ea8e048b7d381f2d7 + diskdb.Put(hashData([]byte("acc-2")).Bytes(), val) + rawdb.WriteAccountSnapshot(diskdb, hashData([]byte("acc-2")), val) + + acc = &Account{Balance: big.NewInt(3), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ = rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-3"), val) // 0x50815097425d000edfc8b3a4a13e175fc2bdcfee8bdfbf2d1ff61041d3c235b2 + rawdb.WriteAccountSnapshot(diskdb, hashData([]byte("acc-3")), val) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-3")), hashData([]byte("key-1")), []byte("val-1")) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-3")), hashData([]byte("key-2")), []byte("val-2")) + rawdb.WriteStorageSnapshot(diskdb, hashData([]byte("acc-3")), hashData([]byte("key-3")), []byte("val-3")) + + root, _ := accTrie.Commit(nil) // Root: 0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd + triedb.Commit(root, false, nil) + + snap := generateSnapshot(diskdb, triedb, 16, root) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop +} + +func checkSnapRoot(t *testing.T, snap *diskLayer, trieRoot common.Hash) { + t.Helper() + accIt := snap.AccountIterator(common.Hash{}) + defer accIt.Release() + snapRoot, err := generateTrieRoot(nil, accIt, common.Hash{}, stackTrieGenerate, + func(db ethdb.KeyValueWriter, accountHash, codeHash common.Hash, stat *generateStats) (common.Hash, error) { + storageIt, _ := snap.StorageIterator(accountHash, common.Hash{}) + defer storageIt.Release() + + hash, err := generateTrieRoot(nil, storageIt, accountHash, stackTrieGenerate, nil, stat, false) + if err != nil { + return common.Hash{}, err + } + return hash, nil + }, newGenerateStats(), true) + + if err != nil { + t.Fatal(err) + } + if snapRoot != trieRoot { + t.Fatalf("snaproot: %#x != trieroot #%x", snapRoot, trieRoot) + } +} + +type testHelper struct { + diskdb *memorydb.Database + triedb *trie.Database + accTrie *trie.SecureTrie +} + +func newHelper() *testHelper { + diskdb := memorydb.New() + triedb := trie.NewDatabase(diskdb) + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + return &testHelper{ + diskdb: diskdb, + triedb: triedb, + accTrie: accTrie, + } +} + +func (t *testHelper) addTrieAccount(acckey string, acc *Account) { + val, _ := rlp.EncodeToBytes(acc) + t.accTrie.Update([]byte(acckey), val) +} + +func (t *testHelper) addSnapAccount(acckey string, acc *Account) { + val, _ := rlp.EncodeToBytes(acc) + key := hashData([]byte(acckey)) + rawdb.WriteAccountSnapshot(t.diskdb, key, val) +} + +func (t *testHelper) addAccount(acckey string, acc *Account) { + t.addTrieAccount(acckey, acc) + t.addSnapAccount(acckey, acc) +} + +func (t *testHelper) addSnapStorage(accKey string, keys []string, vals []string) { + accHash := hashData([]byte(accKey)) + for i, key := range keys { + rawdb.WriteStorageSnapshot(t.diskdb, accHash, hashData([]byte(key)), []byte(vals[i])) + } +} + +func (t *testHelper) makeStorageTrie(keys []string, vals []string) []byte { + stTrie, _ := trie.NewSecure(common.Hash{}, t.triedb) + for i, k := range keys { + stTrie.Update([]byte(k), []byte(vals[i])) + } + root, _ := stTrie.Commit(nil) + return root.Bytes() +} + +func (t *testHelper) Generate() (common.Hash, *diskLayer) { + root, _ := t.accTrie.Commit(nil) + t.triedb.Commit(root, false, nil) + snap := generateSnapshot(t.diskdb, t.triedb, 16, root) + return root, snap +} + +// Tests that snapshot generation with existent flat state, where the flat state +// contains some errors: +// - the contract with empty storage root but has storage entries in the disk +// - the contract with non empty storage root but empty storage slots +// - the contract(non-empty storage) misses some storage slots +// - miss in the beginning +// - miss in the middle +// - miss in the end +// - the contract(non-empty storage) has wrong storage slots +// - wrong slots in the beginning +// - wrong slots in the middle +// - wrong slots in the end +// - the contract(non-empty storage) has extra storage slots +// - extra slots in the beginning +// - extra slots in the middle +// - extra slots in the end +func TestGenerateExistentStateWithWrongStorage(t *testing.T) { + helper := newHelper() + stRoot := helper.makeStorageTrie([]string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "val-3"}) + + // Account one, empty root but non-empty database + helper.addAccount("acc-1", &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-1", []string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "val-3"}) + + // Account two, non empty root but empty database + helper.addAccount("acc-2", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + + // Miss slots + { + // Account three, non empty root but misses slots in the beginning + helper.addAccount("acc-3", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-3", []string{"key-2", "key-3"}, []string{"val-2", "val-3"}) + + // Account four, non empty root but misses slots in the middle + helper.addAccount("acc-4", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-4", []string{"key-1", "key-3"}, []string{"val-1", "val-3"}) + + // Account five, non empty root but misses slots in the end + helper.addAccount("acc-5", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-5", []string{"key-1", "key-2"}, []string{"val-1", "val-2"}) + } + + // Wrong storage slots + { + // Account six, non empty root but wrong slots in the beginning + helper.addAccount("acc-6", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-6", []string{"key-1", "key-2", "key-3"}, []string{"badval-1", "val-2", "val-3"}) + + // Account seven, non empty root but wrong slots in the middle + helper.addAccount("acc-7", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-7", []string{"key-1", "key-2", "key-3"}, []string{"val-1", "badval-2", "val-3"}) + + // Account eight, non empty root but wrong slots in the end + helper.addAccount("acc-8", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-8", []string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "badval-3"}) + + // Account 9, non empty root but rotated slots + helper.addAccount("acc-9", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-9", []string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-3", "val-2"}) + } + + // Extra storage slots + { + // Account 10, non empty root but extra slots in the beginning + helper.addAccount("acc-10", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-10", []string{"key-0", "key-1", "key-2", "key-3"}, []string{"val-0", "val-1", "val-2", "val-3"}) + + // Account 11, non empty root but extra slots in the middle + helper.addAccount("acc-11", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-11", []string{"key-1", "key-2", "key-2-1", "key-3"}, []string{"val-1", "val-2", "val-2-1", "val-3"}) + + // Account 12, non empty root but extra slots in the end + helper.addAccount("acc-12", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapStorage("acc-12", []string{"key-1", "key-2", "key-3", "key-4"}, []string{"val-1", "val-2", "val-3", "val-4"}) + } + + root, snap := helper.Generate() + t.Logf("Root: %#x\n", root) // Root = 0x8746cce9fd9c658b2cfd639878ed6584b7a2b3e73bb40f607fcfa156002429a0 + + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop +} + +// Tests that snapshot generation with existent flat state, where the flat state +// contains some errors: +// - miss accounts +// - wrong accounts +// - extra accounts +func TestGenerateExistentStateWithWrongAccounts(t *testing.T) { + helper := newHelper() + stRoot := helper.makeStorageTrie([]string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "val-3"}) + + // Trie accounts [acc-1, acc-2, acc-3, acc-4, acc-6] + // Extra accounts [acc-0, acc-5, acc-7] + + // Missing accounts, only in the trie + { + helper.addTrieAccount("acc-1", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) // Beginning + helper.addTrieAccount("acc-4", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) // Middle + helper.addTrieAccount("acc-6", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) // End + } + + // Wrong accounts + { + helper.addTrieAccount("acc-2", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapAccount("acc-2", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: common.Hex2Bytes("0x1234")}) + + helper.addTrieAccount("acc-3", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + helper.addSnapAccount("acc-3", &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()}) + } + + // Extra accounts, only in the snap + { + helper.addSnapAccount("acc-0", &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyRoot.Bytes()}) // before the beginning + helper.addSnapAccount("acc-5", &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: common.Hex2Bytes("0x1234")}) // Middle + helper.addSnapAccount("acc-7", &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyRoot.Bytes()}) // after the end + } + + root, snap := helper.Generate() + t.Logf("Root: %#x\n", root) // Root = 0x825891472281463511e7ebcc7f109e4f9200c20fa384754e11fd605cd98464e8 + + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop +} + // Tests that snapshot generation errors out correctly in case of a missing trie // node in the account trie. func TestGenerateCorruptAccountTrie(t *testing.T) { @@ -55,7 +400,7 @@ func TestGenerateCorruptAccountTrie(t *testing.T) { triedb.Commit(common.HexToHash("0xa04693ea110a31037fb5ee814308a6f1d76bdab0b11676bdf4541d2de55ba978"), false, nil) diskdb.Delete(common.HexToHash("0x65145f923027566669a1ae5ccac66f945b55ff6eaeb17d2ea8e048b7d381f2d7").Bytes()) - snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xa04693ea110a31037fb5ee814308a6f1d76bdab0b11676bdf4541d2de55ba978"), nil) + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xa04693ea110a31037fb5ee814308a6f1d76bdab0b11676bdf4541d2de55ba978")) select { case <-snap.genPending: // Snapshot generation succeeded @@ -115,7 +460,7 @@ func TestGenerateMissingStorageTrie(t *testing.T) { // Delete a storage trie root and ensure the generator chokes diskdb.Delete(common.HexToHash("0xddefcd9376dd029653ef384bd2f0a126bb755fe84fdcc9e7cf421ba454f2bc67").Bytes()) - snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd"), nil) + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd")) select { case <-snap.genPending: // Snapshot generation succeeded @@ -174,7 +519,7 @@ func TestGenerateCorruptStorageTrie(t *testing.T) { // Delete a storage trie leaf and ensure the generator chokes diskdb.Delete(common.HexToHash("0x18a0f4d79cff4459642dd7604f303886ad9d77c30cf3d7d7cedb3a693ab6d371").Bytes()) - snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd"), nil) + snap := generateSnapshot(diskdb, triedb, 16, common.HexToHash("0xe3712f1a226f3782caca78ca770ccc19ee000552813a9f59d479f8611db9b1fd")) select { case <-snap.genPending: // Snapshot generation succeeded @@ -188,3 +533,301 @@ func TestGenerateCorruptStorageTrie(t *testing.T) { snap.genAbort <- stop <-stop } + +func getStorageTrie(n int, triedb *trie.Database) *trie.SecureTrie { + stTrie, _ := trie.NewSecure(common.Hash{}, triedb) + for i := 0; i < n; i++ { + k := fmt.Sprintf("key-%d", i) + v := fmt.Sprintf("val-%d", i) + stTrie.Update([]byte(k), []byte(v)) + } + stTrie.Commit(nil) + return stTrie +} + +// Tests that snapshot generation when an extra account with storage exists in the snap state. +func TestGenerateWithExtraAccounts(t *testing.T) { + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + stTrie = getStorageTrie(5, triedb) + ) + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + { // Account one in the trie + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + // Identical in the snap + key := hashData([]byte("acc-1")) + rawdb.WriteAccountSnapshot(diskdb, key, val) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-1")), []byte("val-1")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-2")), []byte("val-2")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-3")), []byte("val-3")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-4")), []byte("val-4")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-5")), []byte("val-5")) + } + { // Account two exists only in the snapshot + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + key := hashData([]byte("acc-2")) + rawdb.WriteAccountSnapshot(diskdb, key, val) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("b-key-1")), []byte("b-val-1")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("b-key-2")), []byte("b-val-2")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("b-key-3")), []byte("b-val-3")) + } + root, _ := accTrie.Commit(nil) + t.Logf("root: %x", root) + triedb.Commit(root, false, nil) + // To verify the test: If we now inspect the snap db, there should exist extraneous storage items + if data := rawdb.ReadStorageSnapshot(diskdb, hashData([]byte("acc-2")), hashData([]byte("b-key-1"))); data == nil { + t.Fatalf("expected snap storage to exist") + } + + snap := generateSnapshot(diskdb, triedb, 16, root) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop + // If we now inspect the snap db, there should exist no extraneous storage items + if data := rawdb.ReadStorageSnapshot(diskdb, hashData([]byte("acc-2")), hashData([]byte("b-key-1"))); data != nil { + t.Fatalf("expected slot to be removed, got %v", string(data)) + } +} + +func enableLogging() { + log.Root().SetHandler(log.LvlFilterHandler(log.LvlTrace, log.StreamHandler(os.Stderr, log.TerminalFormat(true)))) +} + +// Tests that snapshot generation when an extra account with storage exists in the snap state. +func TestGenerateWithManyExtraAccounts(t *testing.T) { + if false { + enableLogging() + } + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + stTrie = getStorageTrie(3, triedb) + ) + accTrie, _ := trie.NewSecure(common.Hash{}, triedb) + { // Account one in the trie + acc := &Account{Balance: big.NewInt(1), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update([]byte("acc-1"), val) // 0x9250573b9c18c664139f3b6a7a8081b7d8f8916a8fcc5d94feec6c29f5fd4e9e + // Identical in the snap + key := hashData([]byte("acc-1")) + rawdb.WriteAccountSnapshot(diskdb, key, val) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-1")), []byte("val-1")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-2")), []byte("val-2")) + rawdb.WriteStorageSnapshot(diskdb, key, hashData([]byte("key-3")), []byte("val-3")) + } + { // 100 accounts exist only in snapshot + for i := 0; i < 1000; i++ { + //acc := &Account{Balance: big.NewInt(int64(i)), Root: stTrie.Hash().Bytes(), CodeHash: emptyCode.Bytes()} + acc := &Account{Balance: big.NewInt(int64(i)), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + key := hashData([]byte(fmt.Sprintf("acc-%d", i))) + rawdb.WriteAccountSnapshot(diskdb, key, val) + } + } + root, _ := accTrie.Commit(nil) + t.Logf("root: %x", root) + triedb.Commit(root, false, nil) + + snap := generateSnapshot(diskdb, triedb, 16, root) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop +} + +// Tests this case +// maxAccountRange 3 +// snapshot-accounts: 01, 02, 03, 04, 05, 06, 07 +// trie-accounts: 03, 07 +// +// We iterate three snapshot storage slots (max = 3) from the database. They are 0x01, 0x02, 0x03. +// The trie has a lot of deletions. +// So in trie, we iterate 2 entries 0x03, 0x07. We create the 0x07 in the database and abort the procedure, because the trie is exhausted. +// But in the database, we still have the stale storage slots 0x04, 0x05. They are not iterated yet, but the procedure is finished. +func TestGenerateWithExtraBeforeAndAfter(t *testing.T) { + accountCheckRange = 3 + if false { + enableLogging() + } + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + accTrie, _ := trie.New(common.Hash{}, triedb) + { + acc := &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update(common.HexToHash("0x03").Bytes(), val) + accTrie.Update(common.HexToHash("0x07").Bytes(), val) + + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x01"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x02"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x03"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x04"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x05"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x06"), val) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x07"), val) + } + + root, _ := accTrie.Commit(nil) + t.Logf("root: %x", root) + triedb.Commit(root, false, nil) + + snap := generateSnapshot(diskdb, triedb, 16, root) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop +} + +// TestGenerateWithMalformedSnapdata tests what happes if we have some junk +// in the snapshot database, which cannot be parsed back to an account +func TestGenerateWithMalformedSnapdata(t *testing.T) { + accountCheckRange = 3 + if false { + enableLogging() + } + var ( + diskdb = memorydb.New() + triedb = trie.NewDatabase(diskdb) + ) + accTrie, _ := trie.New(common.Hash{}, triedb) + { + acc := &Account{Balance: big.NewInt(1), Root: emptyRoot.Bytes(), CodeHash: emptyCode.Bytes()} + val, _ := rlp.EncodeToBytes(acc) + accTrie.Update(common.HexToHash("0x03").Bytes(), val) + + junk := make([]byte, 100) + copy(junk, []byte{0xde, 0xad}) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x02"), junk) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x03"), junk) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x04"), junk) + rawdb.WriteAccountSnapshot(diskdb, common.HexToHash("0x05"), junk) + } + + root, _ := accTrie.Commit(nil) + t.Logf("root: %x", root) + triedb.Commit(root, false, nil) + + snap := generateSnapshot(diskdb, triedb, 16, root) + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop + // If we now inspect the snap db, there should exist no extraneous storage items + if data := rawdb.ReadStorageSnapshot(diskdb, hashData([]byte("acc-2")), hashData([]byte("b-key-1"))); data != nil { + t.Fatalf("expected slot to be removed, got %v", string(data)) + } +} + +func TestGenerateFromEmptySnap(t *testing.T) { + //enableLogging() + accountCheckRange = 10 + storageCheckRange = 20 + helper := newHelper() + stRoot := helper.makeStorageTrie([]string{"key-1", "key-2", "key-3"}, []string{"val-1", "val-2", "val-3"}) + // Add 1K accounts to the trie + for i := 0; i < 400; i++ { + helper.addTrieAccount(fmt.Sprintf("acc-%d", i), + &Account{Balance: big.NewInt(1), Root: stRoot, CodeHash: emptyCode.Bytes()}) + } + root, snap := helper.Generate() + t.Logf("Root: %#x\n", root) // Root: 0x6f7af6d2e1a1bf2b84a3beb3f8b64388465fbc1e274ca5d5d3fc787ca78f59e4 + + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(1 * time.Second): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop +} + +// Tests that snapshot generation with existent flat state, where the flat state +// storage is correct, but incomplete. +// The incomplete part is on the second range +// snap: [ 0x01, 0x02, 0x03, 0x04] , [ 0x05, 0x06, 0x07, {missing}] (with storageCheck = 4) +// trie: 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 +// This hits a case where the snap verification passes, but there are more elements in the trie +// which we must also add. +func TestGenerateWithIncompleteStorage(t *testing.T) { + storageCheckRange = 4 + helper := newHelper() + stKeys := []string{"1", "2", "3", "4", "5", "6", "7", "8"} + stVals := []string{"v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8"} + stRoot := helper.makeStorageTrie(stKeys, stVals) + // We add 8 accounts, each one is missing exactly one of the storage slots. This means + // we don't have to order the keys and figure out exactly which hash-key winds up + // on the sensitive spots at the boundaries + for i := 0; i < 8; i++ { + accKey := fmt.Sprintf("acc-%d", i) + helper.addAccount(accKey, &Account{Balance: big.NewInt(int64(i)), Root: stRoot, CodeHash: emptyCode.Bytes()}) + var moddedKeys []string + var moddedVals []string + for ii := 0; ii < 8; ii++ { + if ii != i { + moddedKeys = append(moddedKeys, stKeys[ii]) + moddedVals = append(moddedVals, stVals[ii]) + } + } + helper.addSnapStorage(accKey, moddedKeys, moddedVals) + } + + root, snap := helper.Generate() + t.Logf("Root: %#x\n", root) // Root: 0xca73f6f05ba4ca3024ef340ef3dfca8fdabc1b677ff13f5a9571fd49c16e67ff + + select { + case <-snap.genPending: + // Snapshot generation succeeded + + case <-time.After(250 * time.Millisecond): + t.Errorf("Snapshot generation failed") + } + checkSnapRoot(t, snap, root) + // Signal abortion to the generator and wait for it to tear down + stop := make(chan *generatorStats) + snap.genAbort <- stop + <-stop +} diff --git a/core/state/snapshot/journal.go b/core/state/snapshot/journal.go index d7e454cce..b31e921ca 100644 --- a/core/state/snapshot/journal.go +++ b/core/state/snapshot/journal.go @@ -37,7 +37,10 @@ const journalVersion uint64 = 0 // journalGenerator is a disk layer entry containing the generator progress marker. type journalGenerator struct { - Wiping bool // Whether the database was in progress of being wiped + // Indicator that whether the database was in progress of being wiped. + // It's deprecated but keep it here for background compatibility. + Wiping bool + Done bool // Whether the generator finished creating the snapshot Marker []byte Accounts uint64 @@ -193,14 +196,6 @@ func loadSnapshot(diskdb ethdb.KeyValueStore, triedb *trie.Database, cache int, } // Everything loaded correctly, resume any suspended operations if !generator.Done { - // If the generator was still wiping, restart one from scratch (fine for - // now as it's rare and the wiper deletes the stuff it touches anyway, so - // restarting won't incur a lot of extra database hops. - var wiper chan struct{} - if generator.Wiping { - log.Info("Resuming previous snapshot wipe") - wiper = wipeSnapshot(diskdb, false) - } // Whether or not wiping was in progress, load any generator progress too base.genMarker = generator.Marker if base.genMarker == nil { @@ -214,7 +209,6 @@ func loadSnapshot(diskdb ethdb.KeyValueStore, triedb *trie.Database, cache int, origin = binary.BigEndian.Uint64(generator.Marker) } go base.generate(&generatorStats{ - wiping: wiper, origin: origin, start: time.Now(), accounts: generator.Accounts, @@ -381,7 +375,6 @@ func (dl *diskLayer) LegacyJournal(buffer *bytes.Buffer) (common.Hash, error) { Marker: dl.genMarker, } if stats != nil { - entry.Wiping = (stats.wiping != nil) entry.Accounts = stats.accounts entry.Slots = stats.slots entry.Storage = uint64(stats.storage) diff --git a/core/state/snapshot/snapshot.go b/core/state/snapshot/snapshot.go index eccf37726..710ba4d4c 100644 --- a/core/state/snapshot/snapshot.go +++ b/core/state/snapshot/snapshot.go @@ -656,9 +656,6 @@ func (t *Tree) Rebuild(root common.Hash) { // building a brand new snapshot. rawdb.DeleteSnapshotRecoveryNumber(t.diskdb) - // Track whether there's a wipe currently running and keep it alive if so - var wiper chan struct{} - // Iterate over and mark all layers stale for _, layer := range t.layers { switch layer := layer.(type) { @@ -667,10 +664,7 @@ func (t *Tree) Rebuild(root common.Hash) { if layer.genAbort != nil { abort := make(chan *generatorStats) layer.genAbort <- abort - - if stats := <-abort; stats != nil { - wiper = stats.wiping - } + <-abort } // Layer should be inactive now, mark it as stale layer.lock.Lock() @@ -691,7 +685,7 @@ func (t *Tree) Rebuild(root common.Hash) { // generator will run a wiper first if there's not one running right now. log.Info("Rebuilding state snapshot") t.layers = map[common.Hash]snapshot{ - root: generateSnapshot(t.diskdb, t.triedb, t.cache, root, wiper), + root: generateSnapshot(t.diskdb, t.triedb, t.cache, root), } } diff --git a/core/state/snapshot/wipe.go b/core/state/snapshot/wipe.go index 14b63031a..2cab57393 100644 --- a/core/state/snapshot/wipe.go +++ b/core/state/snapshot/wipe.go @@ -24,10 +24,11 @@ import ( "github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/log" + "github.com/ethereum/go-ethereum/metrics" ) // wipeSnapshot starts a goroutine to iterate over the entire key-value database -// and delete all the data associated with the snapshot (accounts, storage, +// and delete all the data associated with the snapshot (accounts, storage, // metadata). After all is done, the snapshot range of the database is compacted // to free up unused data blocks. func wipeSnapshot(db ethdb.KeyValueStore, full bool) chan struct{} { @@ -53,10 +54,10 @@ func wipeSnapshot(db ethdb.KeyValueStore, full bool) chan struct{} { // removed in sync to avoid data races. After all is done, the snapshot range of // the database is compacted to free up unused data blocks. func wipeContent(db ethdb.KeyValueStore) error { - if err := wipeKeyRange(db, "accounts", rawdb.SnapshotAccountPrefix, len(rawdb.SnapshotAccountPrefix)+common.HashLength); err != nil { + if err := wipeKeyRange(db, "accounts", rawdb.SnapshotAccountPrefix, nil, nil, len(rawdb.SnapshotAccountPrefix)+common.HashLength, snapWipedAccountMeter, true); err != nil { return err } - if err := wipeKeyRange(db, "storage", rawdb.SnapshotStoragePrefix, len(rawdb.SnapshotStoragePrefix)+2*common.HashLength); err != nil { + if err := wipeKeyRange(db, "storage", rawdb.SnapshotStoragePrefix, nil, nil, len(rawdb.SnapshotStoragePrefix)+2*common.HashLength, snapWipedStorageMeter, true); err != nil { return err } // Compact the snapshot section of the database to get rid of unused space @@ -82,8 +83,11 @@ func wipeContent(db ethdb.KeyValueStore) error { } // wipeKeyRange deletes a range of keys from the database starting with prefix -// and having a specific total key length. -func wipeKeyRange(db ethdb.KeyValueStore, kind string, prefix []byte, keylen int) error { +// and having a specific total key length. The start and limit is optional for +// specifying a particular key range for deletion. +// +// Origin is included for wiping and limit is excluded if they are specified. +func wipeKeyRange(db ethdb.KeyValueStore, kind string, prefix []byte, origin []byte, limit []byte, keylen int, meter metrics.Meter, report bool) error { // Batch deletions together to avoid holding an iterator for too long var ( batch = db.NewBatch() @@ -92,7 +96,11 @@ func wipeKeyRange(db ethdb.KeyValueStore, kind string, prefix []byte, keylen int // Iterate over the key-range and delete all of them start, logged := time.Now(), time.Now() - it := db.NewIterator(prefix, nil) + it := db.NewIterator(prefix, origin) + var stop []byte + if limit != nil { + stop = append(prefix, limit...) + } for it.Next() { // Skip any keys with the correct prefix but wrong length (trie nodes) key := it.Key() @@ -102,6 +110,9 @@ func wipeKeyRange(db ethdb.KeyValueStore, kind string, prefix []byte, keylen int if len(key) != keylen { continue } + if stop != nil && bytes.Compare(key, stop) >= 0 { + break + } // Delete the key and periodically recreate the batch and iterator batch.Delete(key) items++ @@ -116,7 +127,7 @@ func wipeKeyRange(db ethdb.KeyValueStore, kind string, prefix []byte, keylen int seekPos := key[len(prefix):] it = db.NewIterator(prefix, seekPos) - if time.Since(logged) > 8*time.Second { + if time.Since(logged) > 8*time.Second && report { log.Info("Deleting state snapshot leftovers", "kind", kind, "wiped", items, "elapsed", common.PrettyDuration(time.Since(start))) logged = time.Now() } @@ -126,6 +137,11 @@ func wipeKeyRange(db ethdb.KeyValueStore, kind string, prefix []byte, keylen int if err := batch.Write(); err != nil { return err } - log.Info("Deleted state snapshot leftovers", "kind", kind, "wiped", items, "elapsed", common.PrettyDuration(time.Since(start))) + if meter != nil { + meter.Mark(int64(items)) + } + if report { + log.Info("Deleted state snapshot leftovers", "kind", kind, "wiped", items, "elapsed", common.PrettyDuration(time.Since(start))) + } return nil } diff --git a/core/state/statedb.go b/core/state/statedb.go index 2e5d6e47c..90f4709bf 100644 --- a/core/state/statedb.go +++ b/core/state/statedb.go @@ -948,7 +948,7 @@ func (s *StateDB) Commit(deleteEmptyObjects bool) (common.Hash, error) { // The onleaf func is called _serially_, so we can reuse the same account // for unmarshalling every time. var account Account - root, err := s.trie.Commit(func(path []byte, leaf []byte, parent common.Hash) error { + root, err := s.trie.Commit(func(_ [][]byte, _ []byte, leaf []byte, parent common.Hash) error { if err := rlp.DecodeBytes(leaf, &account); err != nil { return nil } diff --git a/core/state/sync.go b/core/state/sync.go index 1018b78e5..7a5852fb1 100644 --- a/core/state/sync.go +++ b/core/state/sync.go @@ -26,17 +26,31 @@ import ( ) // NewStateSync create a new state trie download scheduler. -func NewStateSync(root common.Hash, database ethdb.KeyValueReader, bloom *trie.SyncBloom) *trie.Sync { +func NewStateSync(root common.Hash, database ethdb.KeyValueReader, bloom *trie.SyncBloom, onLeaf func(paths [][]byte, leaf []byte) error) *trie.Sync { + // Register the storage slot callback if the external callback is specified. + var onSlot func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error + if onLeaf != nil { + onSlot = func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error { + return onLeaf(paths, leaf) + } + } + // Register the account callback to connect the state trie and the storage + // trie belongs to the contract. var syncer *trie.Sync - callback := func(path []byte, leaf []byte, parent common.Hash) error { + onAccount := func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error { + if onLeaf != nil { + if err := onLeaf(paths, leaf); err != nil { + return err + } + } var obj Account if err := rlp.Decode(bytes.NewReader(leaf), &obj); err != nil { return err } - syncer.AddSubTrie(obj.Root, path, parent, nil) - syncer.AddCodeEntry(common.BytesToHash(obj.CodeHash), path, parent) + syncer.AddSubTrie(obj.Root, hexpath, parent, onSlot) + syncer.AddCodeEntry(common.BytesToHash(obj.CodeHash), hexpath, parent) return nil } - syncer = trie.NewSync(root, database, callback, bloom) + syncer = trie.NewSync(root, database, onAccount, bloom) return syncer } diff --git a/core/state/sync_test.go b/core/state/sync_test.go index 9c4867093..a13fcf56a 100644 --- a/core/state/sync_test.go +++ b/core/state/sync_test.go @@ -133,7 +133,7 @@ func checkStateConsistency(db ethdb.Database, root common.Hash) error { // Tests that an empty state is not scheduled for syncing. func TestEmptyStateSync(t *testing.T) { empty := common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421") - sync := NewStateSync(empty, rawdb.NewMemoryDatabase(), trie.NewSyncBloom(1, memorydb.New())) + sync := NewStateSync(empty, rawdb.NewMemoryDatabase(), trie.NewSyncBloom(1, memorydb.New()), nil) if nodes, paths, codes := sync.Missing(1); len(nodes) != 0 || len(paths) != 0 || len(codes) != 0 { t.Errorf(" content requested for empty state: %v, %v, %v", nodes, paths, codes) } @@ -170,7 +170,7 @@ func testIterativeStateSync(t *testing.T, count int, commit bool, bypath bool) { // Create a destination state and sync with the scheduler dstDb := rawdb.NewMemoryDatabase() - sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb)) + sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb), nil) nodes, paths, codes := sched.Missing(count) var ( @@ -249,7 +249,7 @@ func TestIterativeDelayedStateSync(t *testing.T) { // Create a destination state and sync with the scheduler dstDb := rawdb.NewMemoryDatabase() - sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb)) + sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb), nil) nodes, _, codes := sched.Missing(0) queue := append(append([]common.Hash{}, nodes...), codes...) @@ -297,7 +297,7 @@ func testIterativeRandomStateSync(t *testing.T, count int) { // Create a destination state and sync with the scheduler dstDb := rawdb.NewMemoryDatabase() - sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb)) + sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb), nil) queue := make(map[common.Hash]struct{}) nodes, _, codes := sched.Missing(count) @@ -347,7 +347,7 @@ func TestIterativeRandomDelayedStateSync(t *testing.T) { // Create a destination state and sync with the scheduler dstDb := rawdb.NewMemoryDatabase() - sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb)) + sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb), nil) queue := make(map[common.Hash]struct{}) nodes, _, codes := sched.Missing(0) @@ -414,7 +414,7 @@ func TestIncompleteStateSync(t *testing.T) { // Create a destination state and sync with the scheduler dstDb := rawdb.NewMemoryDatabase() - sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb)) + sched := NewStateSync(srcRoot, dstDb, trie.NewSyncBloom(1, dstDb), nil) var added []common.Hash diff --git a/eth/downloader/statesync.go b/eth/downloader/statesync.go index 6231588ad..ff84a3a8f 100644 --- a/eth/downloader/statesync.go +++ b/eth/downloader/statesync.go @@ -298,7 +298,7 @@ func newStateSync(d *Downloader, root common.Hash) *stateSync { return &stateSync{ d: d, root: root, - sched: state.NewStateSync(root, d.stateDB, d.stateBloom), + sched: state.NewStateSync(root, d.stateDB, d.stateBloom, nil), keccak: sha3.NewLegacyKeccak256().(crypto.KeccakState), trieTasks: make(map[common.Hash]*trieTask), codeTasks: make(map[common.Hash]*codeTask), diff --git a/eth/protocols/snap/sync.go b/eth/protocols/snap/sync.go index 2924fa080..22b0c8604 100644 --- a/eth/protocols/snap/sync.go +++ b/eth/protocols/snap/sync.go @@ -29,6 +29,7 @@ import ( "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/core/state" + "github.com/ethereum/go-ethereum/core/state/snapshot" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/event" @@ -51,7 +52,7 @@ const ( // maxRequestSize is the maximum number of bytes to request from a remote peer. maxRequestSize = 512 * 1024 - // maxStorageSetRequestCountis th maximum number of contracts to request the + // maxStorageSetRequestCount is the maximum number of contracts to request the // storage of in a single query. If this number is too low, we're not filling // responses fully and waste round trip times. If it's too high, we're capping // responses and waste bandwidth. @@ -435,9 +436,14 @@ type Syncer struct { bytecodeHealDups uint64 // Number of bytecodes already processed bytecodeHealNops uint64 // Number of bytecodes not requested - startTime time.Time // Time instance when snapshot sync started - startAcc common.Hash // Account hash where sync started from - logTime time.Time // Time instance when status was last reported + stateWriter ethdb.Batch // Shared batch writer used for persisting raw states + accountHealed uint64 // Number of accounts downloaded during the healing stage + accountHealedBytes common.StorageSize // Number of raw account bytes persisted to disk during the healing stage + storageHealed uint64 // Number of storage slots downloaded during the healing stage + storageHealedBytes common.StorageSize // Number of raw storage bytes persisted to disk during the healing stage + + startTime time.Time // Time instance when snapshot sync started + logTime time.Time // Time instance when status was last reported pend sync.WaitGroup // Tracks network request goroutines for graceful shutdown lock sync.RWMutex // Protects fields that can change outside of sync (peers, reqs, root) @@ -477,6 +483,7 @@ func NewSyncer(db ethdb.KeyValueStore) *Syncer { bytecodeHealReqFails: make(chan *bytecodeHealRequest), trienodeHealResps: make(chan *trienodeHealResponse), bytecodeHealResps: make(chan *bytecodeHealResponse), + stateWriter: db.NewBatch(), } } @@ -544,7 +551,7 @@ func (s *Syncer) Sync(root common.Hash, cancel chan struct{}) error { s.lock.Lock() s.root = root s.healer = &healTask{ - scheduler: state.NewStateSync(root, s.db, nil), + scheduler: state.NewStateSync(root, s.db, nil, s.onHealState), trieTasks: make(map[common.Hash]trie.SyncPath), codeTasks: make(map[common.Hash]struct{}), } @@ -560,6 +567,11 @@ func (s *Syncer) Sync(root common.Hash, cancel chan struct{}) error { log.Debug("Snapshot sync already completed") return nil } + // If sync is still not finished, we need to ensure that any marker is wiped. + // Otherwise, it may happen that requests for e.g. genesis-data is delivered + // from the snapshot data, instead of from the trie + snapshot.ClearSnapshotMarker(s.db) + defer func() { // Persist any progress, independent of failure for _, task := range s.tasks { s.forwardAccountTask(task) @@ -569,6 +581,14 @@ func (s *Syncer) Sync(root common.Hash, cancel chan struct{}) error { }() log.Debug("Starting snapshot sync cycle", "root", root) + + // Flush out the last committed raw states + defer func() { + if s.stateWriter.ValueSize() > 0 { + s.stateWriter.Write() + s.stateWriter.Reset() + } + }() defer s.report(true) // Whether sync completed or not, disregard any future packets @@ -1694,7 +1714,7 @@ func (s *Syncer) processBytecodeResponse(res *bytecodeResponse) { // processStorageResponse integrates an already validated storage response // into the account tasks. func (s *Syncer) processStorageResponse(res *storageResponse) { - // Switch the suntask from pending to idle + // Switch the subtask from pending to idle if res.subTask != nil { res.subTask.req = nil } @@ -1826,6 +1846,14 @@ func (s *Syncer) processStorageResponse(res *storageResponse) { nodes++ } it.Release() + + // Persist the received storage segements. These flat state maybe + // outdated during the sync, but it can be fixed later during the + // snapshot generation. + for j := 0; j < len(res.hashes[i]); j++ { + rawdb.WriteStorageSnapshot(batch, account, res.hashes[i][j], res.slots[i][j]) + bytes += common.StorageSize(1 + 2*common.HashLength + len(res.slots[i][j])) + } } if err := batch.Write(); err != nil { log.Crit("Failed to persist storage slots", "err", err) @@ -1983,6 +2011,14 @@ func (s *Syncer) forwardAccountTask(task *accountTask) { } it.Release() + // Persist the received account segements. These flat state maybe + // outdated during the sync, but it can be fixed later during the + // snapshot generation. + for i, hash := range res.hashes { + blob := snapshot.SlimAccountRLP(res.accounts[i].Nonce, res.accounts[i].Balance, res.accounts[i].Root, res.accounts[i].CodeHash) + rawdb.WriteAccountSnapshot(batch, hash, blob) + bytes += common.StorageSize(1 + common.HashLength + len(blob)) + } if err := batch.Write(); err != nil { log.Crit("Failed to persist accounts", "err", err) } @@ -2569,6 +2605,33 @@ func (s *Syncer) onHealByteCodes(peer SyncPeer, id uint64, bytecodes [][]byte) e return nil } +// onHealState is a callback method to invoke when a flat state(account +// or storage slot) is downloded during the healing stage. The flat states +// can be persisted blindly and can be fixed later in the generation stage. +// Note it's not concurrent safe, please handle the concurrent issue outside. +func (s *Syncer) onHealState(paths [][]byte, value []byte) error { + if len(paths) == 1 { + var account state.Account + if err := rlp.DecodeBytes(value, &account); err != nil { + return nil + } + blob := snapshot.SlimAccountRLP(account.Nonce, account.Balance, account.Root, account.CodeHash) + rawdb.WriteAccountSnapshot(s.stateWriter, common.BytesToHash(paths[0]), blob) + s.accountHealed += 1 + s.accountHealedBytes += common.StorageSize(1 + common.HashLength + len(blob)) + } + if len(paths) == 2 { + rawdb.WriteStorageSnapshot(s.stateWriter, common.BytesToHash(paths[0]), common.BytesToHash(paths[1]), value) + s.storageHealed += 1 + s.storageHealedBytes += common.StorageSize(1 + 2*common.HashLength + len(value)) + } + if s.stateWriter.ValueSize() > ethdb.IdealBatchSize { + s.stateWriter.Write() // It's fine to ignore the error here + s.stateWriter.Reset() + } + return nil +} + // hashSpace is the total size of the 256 bit hash space for accounts. var hashSpace = new(big.Int).Exp(common.Big2, common.Big256, nil) @@ -2632,7 +2695,9 @@ func (s *Syncer) reportHealProgress(force bool) { var ( trienode = fmt.Sprintf("%d@%v", s.trienodeHealSynced, s.trienodeHealBytes.TerminalString()) bytecode = fmt.Sprintf("%d@%v", s.bytecodeHealSynced, s.bytecodeHealBytes.TerminalString()) + accounts = fmt.Sprintf("%d@%v", s.accountHealed, s.accountHealedBytes.TerminalString()) + storage = fmt.Sprintf("%d@%v", s.storageHealed, s.storageHealedBytes.TerminalString()) ) - log.Info("State heal in progress", "nodes", trienode, "codes", bytecode, - "pending", s.healer.scheduler.Pending()) + log.Info("State heal in progress", "accounts", accounts, "slots", storage, + "codes", bytecode, "nodes", trienode, "pending", s.healer.scheduler.Pending()) } diff --git a/trie/committer.go b/trie/committer.go index 33fd9e982..ce4065f5f 100644 --- a/trie/committer.go +++ b/trie/committer.go @@ -220,13 +220,13 @@ func (c *committer) commitLoop(db *Database) { switch n := n.(type) { case *shortNode: if child, ok := n.Val.(valueNode); ok { - c.onleaf(nil, child, hash) + c.onleaf(nil, nil, child, hash) } case *fullNode: // For children in range [0, 15], it's impossible // to contain valuenode. Only check the 17th child. if n.Children[16] != nil { - c.onleaf(nil, n.Children[16].(valueNode), hash) + c.onleaf(nil, nil, n.Children[16].(valueNode), hash) } } } diff --git a/trie/sync.go b/trie/sync.go index dd8279b66..3a6076ff8 100644 --- a/trie/sync.go +++ b/trie/sync.go @@ -398,7 +398,14 @@ func (s *Sync) children(req *request, object node) ([]*request, error) { // Notify any external watcher of a new key/value node if req.callback != nil { if node, ok := (child.node).(valueNode); ok { - if err := req.callback(child.path, node, req.hash); err != nil { + var paths [][]byte + if len(child.path) == 2*common.HashLength { + paths = append(paths, hexToKeybytes(child.path)) + } else if len(child.path) == 4*common.HashLength { + paths = append(paths, hexToKeybytes(child.path[:2*common.HashLength])) + paths = append(paths, hexToKeybytes(child.path[2*common.HashLength:])) + } + if err := req.callback(paths, child.path, node, req.hash); err != nil { return nil, err } } diff --git a/trie/trie.go b/trie/trie.go index 87b72ecf1..7ed235fa8 100644 --- a/trie/trie.go +++ b/trie/trie.go @@ -37,9 +37,20 @@ var ( ) // LeafCallback is a callback type invoked when a trie operation reaches a leaf -// node. It's used by state sync and commit to allow handling external references -// between account and storage tries. -type LeafCallback func(path []byte, leaf []byte, parent common.Hash) error +// node. +// +// The paths is a path tuple identifying a particular trie node either in a single +// trie (account) or a layered trie (account -> storage). Each path in the tuple +// is in the raw format(32 bytes). +// +// The hexpath is a composite hexary path identifying the trie node. All the key +// bytes are converted to the hexary nibbles and composited with the parent path +// if the trie node is in a layered trie. +// +// It's used by state sync and commit to allow handling external references +// between account and storage tries. And also it's used in the state healing +// for extracting the raw states(leaf nodes) with corresponding paths. +type LeafCallback func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error // Trie is a Merkle Patricia Trie. // The zero value is an empty trie with no database. diff --git a/trie/trie_test.go b/trie/trie_test.go index 3aa4098d1..d6930fdee 100644 --- a/trie/trie_test.go +++ b/trie/trie_test.go @@ -569,7 +569,7 @@ func BenchmarkCommitAfterHash(b *testing.B) { benchmarkCommitAfterHash(b, nil) }) var a account - onleaf := func(path []byte, leaf []byte, parent common.Hash) error { + onleaf := func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error { rlp.DecodeBytes(leaf, &a) return nil }