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use symmetric difference iterator

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This commit is contained in:
Roy Crihfield 2023-07-24 01:00:37 +08:00
parent 3c544d4388
commit 2ebd0421e2
2 changed files with 86 additions and 153 deletions
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233
builder.go
View File

@ -120,47 +120,27 @@ func (sdb *StateDiffBuilder) WriteStateDiff(args Args, params Params, nodeSink s
return fmt.Errorf("error creating trie for newStateRoot: %w", err)
}
// we do two state trie iterations:
// one for new/updated nodes,
// one for deleted/updated nodes;
// prepare 2 iterator instances for each task
iterPairs := []IterPair{
{
Older: oldTrie.NodeIterator([]byte{}),
Newer: newTrie.NodeIterator([]byte{}),
},
{
Older: oldTrie.NodeIterator([]byte{}),
Newer: newTrie.NodeIterator([]byte{}),
},
iters := IterPair{
Older: oldTrie.NodeIterator(nil),
Newer: newTrie.NodeIterator(nil),
}
logger := log.New("hash", args.BlockHash, "number", args.BlockNumber)
return sdb.BuildStateDiff(iterPairs, params, nodeSink, ipldSink, logger)
return sdb.BuildStateDiff(iters, params, nodeSink, ipldSink, logger)
}
func (sdb *StateDiffBuilder) BuildStateDiff(iterPairs []IterPair, params Params,
sinkNode sdtypes.StateNodeSink, sinkIpld sdtypes.IPLDSink, logger log.Logger) error {
func (sdb *StateDiffBuilder) BuildStateDiff(iterPair IterPair, params Params,
nodeSink sdtypes.StateNodeSink, ipldSink sdtypes.IPLDSink, logger log.Logger) error {
logger.Trace("statediff BEGIN BuildStateDiff")
defer metrics.ReportAndUpdateDuration("statediff END BuildStateDiff", time.Now(), logger, metrics.IndexerMetrics.BuildStateDiffTimer)
// collect a slice of all the nodes that were touched and exist at B (B-A)
// a map of their leafkey to all the accounts that were touched and exist at B
// and a slice of all the paths for the nodes in both of the above sets
diffAccountsAtB, err := sdb.createdAndUpdatedState(
iterPairs[0].Older, iterPairs[0].Newer, params.watchedAddressesLeafPaths, sinkIpld, logger)
diffAccountsAtB, diffAccountsAtA, err := sdb.createdAndUpdatedState(
iterPair.Older, iterPair.Newer, params.watchedAddressesLeafPaths, nodeSink, ipldSink, logger)
if err != nil {
return fmt.Errorf("error collecting createdAndUpdatedNodes: %w", err)
}
// collect a slice of all the nodes that existed at a path in A that doesn't exist in B
// a map of their leafkey to all the accounts that were touched and exist at A
diffAccountsAtA, err := sdb.deletedState(
iterPairs[1].Older, iterPairs[1].Newer, diffAccountsAtB,
params.watchedAddressesLeafPaths, sinkNode, logger)
if err != nil {
return fmt.Errorf("error collecting deletedOrUpdatedNodes: %w", err)
}
// collect and sort the leafkey keys for both account mappings into a slice
t := time.Now()
createKeys := trie_helpers.SortKeys(diffAccountsAtB)
@ -178,12 +158,12 @@ func (sdb *StateDiffBuilder) BuildStateDiff(iterPairs []IterPair, params Params,
"duration", time.Since(t))
// build the diff nodes for the updated accounts using the mappings at both A and B as directed by the keys found as the intersection of the two
err = sdb.buildAccountUpdates(diffAccountsAtB, diffAccountsAtA, updatedKeys, sinkNode, sinkIpld, logger)
err = sdb.buildAccountUpdates(diffAccountsAtB, diffAccountsAtA, updatedKeys, nodeSink, ipldSink, logger)
if err != nil {
return fmt.Errorf("error building diff for updated accounts: %w", err)
}
// build the diff nodes for created accounts
err = sdb.buildAccountCreations(diffAccountsAtB, sinkNode, sinkIpld, logger)
err = sdb.buildAccountCreations(diffAccountsAtB, nodeSink, ipldSink, logger)
if err != nil {
return fmt.Errorf("error building diff for created accounts: %w", err)
}
@ -195,25 +175,67 @@ func (sdb *StateDiffBuilder) BuildStateDiff(iterPairs []IterPair, params Params,
// a mapping of their leafkeys to all the accounts that exist in a different state at B than A
// and a slice of the paths for all of the nodes included in both
func (sdb *StateDiffBuilder) createdAndUpdatedState(a, b trie.NodeIterator,
watchedAddressesLeafPaths [][]byte, ipldSink sdtypes.IPLDSink, logger log.Logger) (sdtypes.AccountMap, error) {
watchedAddressesLeafPaths [][]byte,
nodeSink sdtypes.StateNodeSink, ipldSink sdtypes.IPLDSink,
logger log.Logger,
) (sdtypes.AccountMap, sdtypes.AccountMap, error) {
logger.Trace("statediff BEGIN createdAndUpdatedState")
defer metrics.ReportAndUpdateDuration("statediff END createdAndUpdatedState", time.Now(), logger, metrics.IndexerMetrics.CreatedAndUpdatedStateTimer)
diffAccountsAtB := make(sdtypes.AccountMap)
diffAccountsAtA := make(sdtypes.AccountMap)
// cache the RLP of the previous node, so when we hit a leaf we have the parent (containing) node
var prevBlob []byte
it, itCount := trie.NewDifferenceIterator(a, b)
// Cache the RLP of the previous node on A and B. When we hit a value node this will be the parent blob.
var prevBlobFromA, prevBlobFromB []byte
it, itCount := utils.NewSymmetricDifferenceIterator(a, b)
for it.Next(true) {
// ignore node if it is not along paths of interest
if !isWatchedPathPrefix(watchedAddressesLeafPaths, it.Path()) {
continue
}
if it.FromA() {
if it.Leaf() {
accountW, err := sdb.processStateValueNode(it, prevBlobFromB)
if err != nil {
return nil, nil, err
}
if accountW == nil {
continue
}
leafKey := hex.EncodeToString(accountW.LeafKey)
diffAccountsAtA[leafKey] = *accountW
if !it.CommonPath() {
// if this node is removed, not updated, that means the account was
// deleted. in that case, emit an empty "removed" state node record and
// "removed" storage node records for all the storage slots.
diff := sdtypes.StateLeafNode{
AccountWrapper: sdtypes.AccountWrapper{
LeafKey: accountW.LeafKey,
CID: shared.RemovedNodeStateCID,
},
Removed: true,
}
err = sdb.buildRemovedAccountStorageNodes(accountW.Account.Root, StorageNodeAppender(&diff.StorageDiff))
if err != nil {
return nil, nil, fmt.Errorf("failed building storage diffs for removed state account with key %x\r\nerror: %w", leafKey, err)
}
if err := nodeSink(diff); err != nil {
return nil, nil, err
}
}
} else {
prevBlobFromB = make([]byte, len(it.NodeBlob()))
copy(prevBlobFromB, it.NodeBlob())
}
continue
}
// index values by leaf key
if it.Leaf() {
// if it is a "value" node, we will index the value by leaf key
accountW, err := sdb.processStateValueNode(it, prevBlob)
accountW, err := sdb.processStateValueNode(it, prevBlobFromA)
if err != nil {
return nil, err
return nil, nil, err
}
if accountW == nil {
continue
@ -235,11 +257,11 @@ func (sdb *StateDiffBuilder) createdAndUpdatedState(a, b trie.NodeIterator,
if len(watchedAddressesLeafPaths) > 0 {
var elements []interface{}
if err := rlp.DecodeBytes(nodeVal, &elements); err != nil {
return nil, err
return nil, nil, err
}
ok, err := isLeaf(elements)
if err != nil {
return nil, err
return nil, nil, err
}
partialPath := utils.CompactToHex(elements[0].([]byte))
valueNodePath := append(it.Path(), partialPath...)
@ -251,14 +273,15 @@ func (sdb *StateDiffBuilder) createdAndUpdatedState(a, b trie.NodeIterator,
CID: ipld.Keccak256ToCid(ipld.MEthStateTrie, it.Hash().Bytes()).String(),
Content: nodeVal,
}); err != nil {
return nil, err
return nil, nil, err
}
prevBlob = nodeVal
prevBlobFromA = nodeVal
}
}
logger.Debug("statediff COUNTS createdAndUpdatedState", "it", itCount, "diffAccountsAtB", len(diffAccountsAtB))
metrics.IndexerMetrics.DifferenceIteratorCounter.Inc(int64(*itCount))
return diffAccountsAtB, it.Error()
return diffAccountsAtB, diffAccountsAtA, it.Error()
}
// decodes account at leaf and encodes RLP data to CID
@ -277,63 +300,6 @@ func (sdb *StateDiffBuilder) processStateValueNode(it trie.NodeIterator, parentB
}, nil
}
// deletedState returns a slice of all the paths that are emptied at B
// and a mapping of their leafkeys to all the accounts that exist in a different state at A than B
func (sdb *StateDiffBuilder) deletedState(a, b trie.NodeIterator, diffAccountsAtB sdtypes.AccountMap,
watchedAddressesLeafPaths [][]byte, nodeSink sdtypes.StateNodeSink, logger log.Logger) (sdtypes.AccountMap, error) {
logger.Trace("statediff BEGIN deletedState")
defer metrics.ReportAndUpdateDuration("statediff END deletedState", time.Now(), logger, metrics.IndexerMetrics.DeletedStateTimer)
diffAccountAtA := make(sdtypes.AccountMap)
var prevBlob []byte
it, _ := trie.NewDifferenceIterator(b, a)
for it.Next(true) {
if !isWatchedPathPrefix(watchedAddressesLeafPaths, it.Path()) {
continue
}
if it.Leaf() {
accountW, err := sdb.processStateValueNode(it, prevBlob)
if err != nil {
return nil, err
}
if accountW == nil {
continue
}
leafKey := hex.EncodeToString(accountW.LeafKey)
diffAccountAtA[leafKey] = *accountW
// if this node's leaf key did not show up in diffAccountsAtB
// that means the account was deleted
// in that case, emit an empty "removed" diff state node
// include empty "removed" diff storage nodes for all the storage slots
if _, ok := diffAccountsAtB[leafKey]; !ok {
diff := sdtypes.StateLeafNode{
AccountWrapper: sdtypes.AccountWrapper{
Account: nil,
LeafKey: accountW.LeafKey,
CID: shared.RemovedNodeStateCID,
},
Removed: true,
}
storageDiff := make([]sdtypes.StorageLeafNode, 0)
err := sdb.buildRemovedAccountStorageNodes(accountW.Account.Root, StorageNodeAppender(&storageDiff))
if err != nil {
return nil, fmt.Errorf("failed building storage diffs for removed state account with key %x\r\nerror: %w", leafKey, err)
}
diff.StorageDiff = storageDiff
if err := nodeSink(diff); err != nil {
return nil, err
}
}
} else {
prevBlob = make([]byte, len(it.NodeBlob()))
copy(prevBlob, it.NodeBlob())
}
}
return diffAccountAtA, it.Error()
}
// buildAccountUpdates uses the account diffs maps for A => B and B => A and the known intersection of their leafkeys
// to generate the statediff node objects for all of the accounts that existed at both A and B but in different states
// needs to be called before building account creations and deletions as this mutates
@ -348,7 +314,7 @@ func (sdb *StateDiffBuilder) buildAccountUpdates(creations, deletions sdtypes.Ac
for _, key := range updatedKeys {
createdAcc := creations[key]
deletedAcc := deletions[key]
storageDiff := make([]sdtypes.StorageLeafNode, 0)
var storageDiff []sdtypes.StorageLeafNode
if deletedAcc.Account != nil && createdAcc.Account != nil {
err = sdb.buildStorageNodesIncremental(
deletedAcc.Account.Root, createdAcc.Account.Root,
@ -360,7 +326,6 @@ func (sdb *StateDiffBuilder) buildAccountUpdates(creations, deletions sdtypes.Ac
}
if err = nodeSink(sdtypes.StateLeafNode{
AccountWrapper: createdAcc,
Removed: false,
StorageDiff: storageDiff,
}); err != nil {
return err
@ -382,16 +347,13 @@ func (sdb *StateDiffBuilder) buildAccountCreations(accounts sdtypes.AccountMap,
for _, val := range accounts {
diff := sdtypes.StateLeafNode{
AccountWrapper: val,
Removed: false,
}
if !bytes.Equal(val.Account.CodeHash, nullCodeHash) {
// For contract creations, any storage node contained is a diff
storageDiff := make([]sdtypes.StorageLeafNode, 0)
err := sdb.buildStorageNodesEventual(val.Account.Root, StorageNodeAppender(&storageDiff), ipldSink)
err := sdb.buildStorageNodesEventual(val.Account.Root, StorageNodeAppender(&diff.StorageDiff), ipldSink)
if err != nil {
return fmt.Errorf("failed building eventual storage diffs for node with leaf key %x\r\nerror: %w", val.LeafKey, err)
}
diff.StorageDiff = storageDiff
// emit codehash => code mappings for contract
codeHash := common.BytesToHash(val.Account.CodeHash)
code, err := sdb.stateCache.ContractCode(codeHash)
@ -486,6 +448,7 @@ func (sdb *StateDiffBuilder) buildRemovedAccountStorageNodes(sr common.Hash, sto
// buildRemovedStorageNodesFromTrie returns diffs for all the storage nodes in the provided node interator
func (sdb *StateDiffBuilder) buildRemovedStorageNodesFromTrie(it trie.NodeIterator, storageSink sdtypes.StorageNodeSink) error {
defer metrics.UpdateDuration(time.Now(), metrics.IndexerMetrics.BuildRemovedStorageNodesFromTrieTimer)
// it := trie.NewIterator(it)
for it.Next(true) {
if it.Leaf() { // only leaf values are indexed, don't need to demarcate removed intermediate nodes
leafKey := make([]byte, len(it.LeafKey()))
@ -520,29 +483,30 @@ func (sdb *StateDiffBuilder) buildStorageNodesIncremental(oldroot common.Hash, n
return err
}
diffSlotsAtB, err := sdb.createdAndUpdatedStorage(
oldTrie.NodeIterator(nil), newTrie.NodeIterator(nil), storageSink, ipldSink)
if err != nil {
return err
}
return sdb.deletedOrUpdatedStorage(oldTrie.NodeIterator(nil), newTrie.NodeIterator(nil),
diffSlotsAtB, storageSink)
}
func (sdb *StateDiffBuilder) createdAndUpdatedStorage(a, b trie.NodeIterator, storageSink sdtypes.StorageNodeSink,
ipldSink sdtypes.IPLDSink) (map[string]bool, error) {
defer metrics.UpdateDuration(time.Now(), metrics.IndexerMetrics.CreatedAndUpdatedStorageTimer)
diffSlotsAtB := make(map[string]bool)
a, b := oldTrie.NodeIterator(nil), newTrie.NodeIterator(nil)
var prevBlob []byte
it, _ := trie.NewDifferenceIterator(a, b)
it, _ := utils.NewSymmetricDifferenceIterator(a, b)
for it.Next(true) {
if it.FromA() {
if it.Leaf() && !it.CommonPath() {
// If this node's leaf key is absent from B, the storage slot was vacated.
// In that case, emit an empty "removed" storage node record.
if err := storageSink(sdtypes.StorageLeafNode{
CID: shared.RemovedNodeStorageCID,
Removed: true,
LeafKey: []byte(it.LeafKey()),
Value: []byte{},
}); err != nil {
return err
}
}
continue
}
if it.Leaf() {
storageLeafNode := sdb.processStorageValueNode(it, prevBlob)
if err := storageSink(storageLeafNode); err != nil {
return nil, err
return err
}
diffSlotsAtB[hex.EncodeToString(storageLeafNode.LeafKey)] = true
} else {
if it.Hash() == zeroHash {
continue
@ -553,36 +517,11 @@ func (sdb *StateDiffBuilder) createdAndUpdatedStorage(a, b trie.NodeIterator, st
CID: ipld.Keccak256ToCid(ipld.MEthStorageTrie, it.Hash().Bytes()).String(),
Content: nodeVal,
}); err != nil {
return nil, err
return err
}
prevBlob = nodeVal
}
}
return diffSlotsAtB, it.Error()
}
func (sdb *StateDiffBuilder) deletedOrUpdatedStorage(a, b trie.NodeIterator, diffSlotsAtB map[string]bool, storageSink sdtypes.StorageNodeSink) error {
defer metrics.UpdateDuration(time.Now(), metrics.IndexerMetrics.DeletedOrUpdatedStorageTimer)
it, _ := trie.NewDifferenceIterator(b, a)
for it.Next(true) {
if it.Leaf() {
leafKey := make([]byte, len(it.LeafKey()))
copy(leafKey, it.LeafKey())
// if this node's leaf key did not show up in diffSlotsAtB
// that means the storage slot was vacated
// in that case, emit an empty "removed" diff storage node
if _, ok := diffSlotsAtB[hex.EncodeToString(leafKey)]; !ok {
if err := storageSink(sdtypes.StorageLeafNode{
CID: shared.RemovedNodeStorageCID,
Removed: true,
LeafKey: leafKey,
Value: []byte{},
}); err != nil {
return err
}
}
}
}
return it.Error()
}

6
indexer/database/metrics/metrics.go
View File

@ -84,8 +84,6 @@ type IndexerMetricsHandles struct {
IPLDOutputTimer metrics.Timer
DifferenceIteratorNextTimer metrics.Timer
DifferenceIteratorCounter metrics.Counter
DeletedOrUpdatedStorageTimer metrics.Timer
CreatedAndUpdatedStorageTimer metrics.Timer
BuildStorageNodesIncrementalTimer metrics.Timer
BuildStateDiffObjectTimer metrics.Timer
WriteStateDiffTimer metrics.Timer
@ -120,8 +118,6 @@ func RegisterIndexerMetrics(reg metrics.Registry) IndexerMetricsHandles {
IPLDOutputTimer: metrics.NewTimer(),
DifferenceIteratorNextTimer: metrics.NewTimer(),
DifferenceIteratorCounter: metrics.NewCounter(),
DeletedOrUpdatedStorageTimer: metrics.NewTimer(),
CreatedAndUpdatedStorageTimer: metrics.NewTimer(),
BuildStorageNodesIncrementalTimer: metrics.NewTimer(),
BuildStateDiffObjectTimer: metrics.NewTimer(),
WriteStateDiffTimer: metrics.NewTimer(),
@ -154,8 +150,6 @@ func RegisterIndexerMetrics(reg metrics.Registry) IndexerMetricsHandles {
reg.Register(metricName(subsys, "t_ipld_output_fn"), ctx.IPLDOutputTimer)
reg.Register(metricName(subsys, "t_difference_iterator_next"), ctx.DifferenceIteratorNextTimer)
reg.Register(metricName(subsys, "difference_iterator_counter"), ctx.DifferenceIteratorCounter)
reg.Register(metricName(subsys, "t_created_and_updated_storage"), ctx.CreatedAndUpdatedStorageTimer)
reg.Register(metricName(subsys, "t_deleted_or_updated_storage"), ctx.DeletedOrUpdatedStorageTimer)
reg.Register(metricName(subsys, "t_build_storage_nodes_incremental"), ctx.BuildStorageNodesIncrementalTimer)
reg.Register(metricName(subsys, "t_build_statediff_object"), ctx.BuildStateDiffObjectTimer)
reg.Register(metricName(subsys, "t_write_statediff_object"), ctx.WriteStateDiffTimer)