mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-27 05:57:28 +00:00
94 lines
2.7 KiB
Go
94 lines
2.7 KiB
Go
package state
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import (
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"github.com/ledgerwatch/turbo-geth/common"
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"github.com/ledgerwatch/turbo-geth/common/dbutils"
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"github.com/ledgerwatch/turbo-geth/common/pool"
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"github.com/ledgerwatch/turbo-geth/ethdb"
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"github.com/ledgerwatch/turbo-geth/log"
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"github.com/ledgerwatch/turbo-geth/metrics"
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"github.com/ledgerwatch/turbo-geth/trie"
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)
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var (
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InsertCounter = metrics.NewRegisteredCounter("db/ih/insert", nil)
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DeleteCounter = metrics.NewRegisteredCounter("db/ih/delete", nil)
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)
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const keyBufferSize = 64
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type IntermediateHashes struct {
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trie.NoopObserver // make sure that we don't need to subscribe to unnecessary methods
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putter ethdb.Putter
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deleter ethdb.Deleter
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}
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func NewIntermediateHashes(putter ethdb.Putter, deleter ethdb.Deleter) *IntermediateHashes {
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return &IntermediateHashes{putter: putter, deleter: deleter}
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}
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func (ih *IntermediateHashes) WillUnloadBranchNode(prefixAsNibbles []byte, nodeHash common.Hash, incarnation uint64) {
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// only put to bucket prefixes with even number of nibbles
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if len(prefixAsNibbles) == 0 || len(prefixAsNibbles)%2 == 1 {
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return
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}
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// special case. Store Account.Root for long time
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if len(prefixAsNibbles) == common.HashLength*2 {
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return
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}
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InsertCounter.Inc(1)
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buf := pool.GetBuffer(keyBufferSize)
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defer pool.PutBuffer(buf)
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trie.CompressNibbles(prefixAsNibbles, &buf.B)
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var key []byte
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if len(buf.B) > common.HashLength {
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if incarnation == 0 {
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panic("0 incarnation")
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}
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key = dbutils.GenerateCompositeStoragePrefix(buf.B[:common.HashLength], incarnation, buf.B[common.HashLength:])
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} else {
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key = common.CopyBytes(buf.B)
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}
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if err := ih.putter.Put(dbutils.IntermediateTrieHashBucket, key, common.CopyBytes(nodeHash[:])); err != nil {
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log.Warn("could not put intermediate trie hash", "err", err)
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}
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}
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func (ih *IntermediateHashes) BranchNodeLoaded(prefixAsNibbles []byte, incarnation uint64) {
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// only put to bucket prefixes with even number of nibbles
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if len(prefixAsNibbles) == 0 || len(prefixAsNibbles)%2 == 1 {
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return
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}
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DeleteCounter.Inc(1)
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// special case. Store Account.Root for long time
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if len(prefixAsNibbles) == common.HashLength*2 {
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return
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}
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buf := pool.GetBuffer(keyBufferSize)
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defer pool.PutBuffer(buf)
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trie.CompressNibbles(prefixAsNibbles, &buf.B)
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var key []byte
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if len(buf.B) > common.HashLength {
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if incarnation == 0 {
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panic("0 incarnation")
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}
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key = dbutils.GenerateCompositeStoragePrefix(buf.B[:common.HashLength], incarnation, buf.B[common.HashLength:])
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} else {
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key = common.CopyBytes(buf.B)
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}
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if err := ih.deleter.Delete(dbutils.IntermediateTrieHashBucket, key); err != nil {
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log.Warn("could not delete intermediate trie hash", "err", err)
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return
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}
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}
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