Add tools to scan and compute hash for IAVL db

tools/cmd.go

@@ -3,6 +3,7 @@ package tools
 import (
 	"github.com/spf13/cobra"
 
+	hasher "github.com/sei-protocol/sei-chain/tools/hash_verification/cmd"
 	migration "github.com/sei-protocol/sei-chain/tools/migration/cmd"
 	scanner "github.com/sei-protocol/sei-chain/tools/tx-scanner/cmd"
 )
@@ -16,5 +17,6 @@ func ToolCmd() *cobra.Command {
 	toolsCmd.AddCommand(migration.MigrateCmd())
 	toolsCmd.AddCommand(migration.VerifyMigrationCmd())
 	toolsCmd.AddCommand(migration.GenerateStats())
+	toolsCmd.AddCommand(hasher.GenerateIavlHashCmd())
 	return toolsCmd
 }

tools/hash_verification/cmd/cmd.go

@@ -0,0 +1,33 @@
+package cmd
+
+import (
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+
+	"github.com/sei-protocol/sei-chain/tools/hash_verification/iavl"
+	dbm "github.com/tendermint/tm-db"
+)
+
+func GenerateIavlHashCmd() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "generate-iavl-hash",
+		Short: "A tool to scan full IAVL archive database and generate a hash for every N blocks per module",
+		Run:   generateIavlHash,
+	}
+	cmd.PersistentFlags().String("home-dir", "/root/.sei", "Sei home directory")
+	cmd.PersistentFlags().Int64("blocks-interval", 1_000_000, "Generate a hash every N blocks")
+	return cmd
+}
+
+func generateIavlHash(cmd *cobra.Command, _ []string) {
+	homeDir, _ := cmd.Flags().GetString("home-dir")
+	blocksInterval, _ := cmd.Flags().GetInt64("blocks-interval")
+	dataDir := filepath.Join(homeDir, "data")
+	db, err := dbm.NewGoLevelDB("application", dataDir)
+	if err != nil {
+		panic(err)
+	}
+	scanner := iavl.NewHashScanner(db, blocksInterval)
+	scanner.ScanAllModules()
+}

tools/hash_verification/hasher/types.go

@@ -0,0 +1,8 @@
+package hasher
+
+// HashCalculator defines the interface for calculating chained state hash.
+type HashCalculator interface {
+	HashSingle(data []byte) []byte
+	HashTwo(dataA []byte, dataB []byte) []byte
+	ComputeHashes() [][]byte
+}

tools/hash_verification/hasher/xor_hasher.go

@@ -0,0 +1,103 @@
+package hasher
+
+import (
+	"crypto/sha256"
+	"encoding/binary"
+	"sync"
+
+	"github.com/sei-protocol/sei-db/ss/types"
+)
+
+var _ HashCalculator = (*XorHashCalculator)(nil)
+
+// XorHashCalculator is the hash calculator backed by XoR hash.
+type XorHashCalculator struct {
+	NumBlocksPerWorker int64
+	NumOfWorkers       int
+	DataCh             chan types.RawSnapshotNode
+}
+
+// NewXorHashCalculator create a new XorHashCalculator.
+func NewXorHashCalculator(numBlocksPerWorker int64, numWorkers int, data chan types.RawSnapshotNode) XorHashCalculator {
+	return XorHashCalculator{
+		NumBlocksPerWorker: numBlocksPerWorker,
+		NumOfWorkers:       numWorkers,
+		DataCh:             data,
+	}
+}
+
+// HashSingle computes the hash of a single data element.
+func (x XorHashCalculator) HashSingle(data []byte) []byte {
+	hash := sha256.Sum256(data)
+	return hash[:]
+}
+
+// HashTwo computes the hash of a two data elements, performs XOR between two byte slices of equal size.
+func (x XorHashCalculator) HashTwo(dataA []byte, dataB []byte) []byte {
+	if len(dataA) != len(dataB) {
+		panic("Expecting both data to have equal length for computing a XoR hash")
+	}
+	result := make([]byte, len(dataA))
+	for i := range dataA {
+		result[i] = dataA[i] ^ dataB[i]
+	}
+	return result
+}
+
+func (x XorHashCalculator) ComputeHashes() [][]byte {
+	var wg sync.WaitGroup
+	allChannels := make([]chan types.RawSnapshotNode, x.NumOfWorkers)
+	allHashes := make([][]byte, x.NumOfWorkers)
+	// First calculate each sub hash in a separate goroutine
+	for i := 0; i < x.NumOfWorkers; i++ {
+		wg.Add(1)
+		subsetChan := make(chan types.RawSnapshotNode, 1000)
+		go func(index int, data chan types.RawSnapshotNode) {
+			defer wg.Done()
+			var hashResult []byte
+			for item := range subsetChan {
+				entryHash := x.HashSingle(Serialize(item))
+				if hashResult == nil {
+					hashResult = entryHash
+				} else {
+					hashResult = x.HashTwo(hashResult, entryHash)
+				}
+			}
+			allHashes[index] = hashResult
+		}(i, subsetChan)
+		allChannels[i] = subsetChan
+	}
+	// Push all the data to its corresponding channel based on version
+	for data := range x.DataCh {
+		index := data.Version / x.NumBlocksPerWorker
+		allChannels[index] <- data
+	}
+	// Close all sub channels
+	for _, subChan := range allChannels {
+		close(subChan)
+	}
+	// Wait for all workers to complete
+	wg.Wait()
+	// Now modify sub hashes to hash again with previous hash
+	for i := 1; i < len(allHashes); i++ {
+		if len(allHashes[i-1]) > 0 && len(allHashes[i]) > 0 {
+			allHashes[i] = x.HashTwo(allHashes[i-1], allHashes[i])
+		} else if len(allHashes[i-1]) > 0 && len(allHashes[i]) == 0 {
+			allHashes[i] = allHashes[i-1]
+		}
+	}
+	return allHashes
+}
+
+func Serialize(node types.RawSnapshotNode) []byte {
+	keySize := len(node.Key)
+	valueSize := len(node.Value)
+	versionSize := 8
+	buf := make([]byte, keySize+valueSize+versionSize)
+	copy(buf[:keySize], node.Key)
+	offset := keySize
+	copy(buf[offset:offset+valueSize], node.Value)
+	offset += valueSize
+	binary.LittleEndian.PutUint64(buf[offset:offset+versionSize], uint64(node.Version))
+	return buf
+}

tools/hash_verification/iavl/scanner.go

@@ -0,0 +1,82 @@
+package iavl
+
+import (
+	"bytes"
+	"fmt"
+
+	"github.com/cosmos/cosmos-sdk/store/rootmulti"
+	"github.com/cosmos/iavl"
+	"github.com/sei-protocol/sei-chain/tools/hash_verification/hasher"
+	"github.com/sei-protocol/sei-chain/tools/utils"
+	"github.com/sei-protocol/sei-db/ss/types"
+	dbm "github.com/tendermint/tm-db"
+)
+
+type HashScanner struct {
+	db             dbm.DB
+	latestVersion  int64
+	blocksInterval int64
+	hashResult     map[string][][]byte
+}
+
+func NewHashScanner(db dbm.DB, blocksInterval int64) *HashScanner {
+	latestVersion := rootmulti.GetLatestVersion(db)
+	fmt.Printf("Detected IAVL latest version: %d\n", latestVersion)
+	return &HashScanner{
+		db:             db,
+		latestVersion:  latestVersion,
+		blocksInterval: blocksInterval,
+		hashResult:     make(map[string][][]byte),
+	}
+}
+
+func (s *HashScanner) ScanAllModules() {
+	for _, moduleName := range utils.Modules {
+		result := s.scanAllHeights(moduleName)
+		for i, hashResult := range result {
+			fmt.Printf("Module %s height %d hash is: %X\n", moduleName, s.blocksInterval*(int64(i)+1), hashResult)
+		}
+	}
+}
+
+func (s *HashScanner) scanAllHeights(module string) [][]byte {
+	dataCh := make(chan types.RawSnapshotNode, 10000)
+	hashCalculator := hasher.NewXorHashCalculator(s.blocksInterval, int(s.latestVersion/s.blocksInterval+1), dataCh)
+	fmt.Printf("Starting to scan module: %s\n", module)
+	go func() {
+		prefixDB := dbm.NewPrefixDB(s.db, []byte(utils.BuildRawPrefix(module)))
+		itr, err := prefixDB.Iterator(nil, nil)
+		count := 0
+		if err != nil {
+			panic(fmt.Errorf("failed to create iterator: %w", err))
+		}
+		defer itr.Close()
+		for ; itr.Valid(); itr.Next() {
+			value := bytes.Clone(itr.Value())
+			node, err := iavl.MakeNode(value)
+			if err != nil {
+				panic(fmt.Errorf("failed to parse iavl node: %w", err))
+			}
+
+			// Only scan leaf nodes
+			if node.GetHeight() != 0 {
+				continue
+			}
+			snapshotNode := types.RawSnapshotNode{
+				StoreKey: module,
+				Key:      node.GetNodeKey(),
+				Value:    node.GetValue(),
+				Version:  node.GetVersion(),
+			}
+			dataCh <- snapshotNode
+			count++
+			if count%1000000 == 0 {
+				fmt.Printf("Scanned %d items for module %s\n", count, module)
+			}
+		}
+		close(dataCh)
+	}()
+	allHashes := hashCalculator.ComputeHashes()
+	s.hashResult[module] = allHashes
+	return allHashes
+}

tools/migration/cmd/cmd.go

@@ -10,7 +10,7 @@ import (
 	"github.com/cosmos/iavl"
 	"github.com/sei-protocol/sei-chain/tools/migration/sc"
 	"github.com/sei-protocol/sei-chain/tools/migration/ss"
-	"github.com/sei-protocol/sei-chain/tools/migration/utils"
+	"github.com/sei-protocol/sei-chain/tools/utils"
 	"github.com/sei-protocol/sei-db/config"
 	sstypes "github.com/sei-protocol/sei-db/ss"
 	"github.com/spf13/cobra"

tools/migration/sc/migrator.go

@@ -20,7 +20,7 @@ import (
 	paramstypes "github.com/cosmos/cosmos-sdk/x/params/types"
 	stakingkeeper "github.com/cosmos/cosmos-sdk/x/staking/keeper"
 	"github.com/sei-protocol/sei-chain/app/params"
-	"github.com/sei-protocol/sei-chain/tools/migration/utils"
+	"github.com/sei-protocol/sei-chain/tools/utils"
 	"github.com/sei-protocol/sei-db/config"
 	"github.com/tendermint/tendermint/libs/log"
 	dbm "github.com/tendermint/tm-db"

tools/migration/ss/migrator.go

@@ -7,7 +7,7 @@ import (
 
 	"github.com/armon/go-metrics"
 	"github.com/cosmos/iavl"
-	"github.com/sei-protocol/sei-chain/tools/migration/utils"
+	"github.com/sei-protocol/sei-chain/tools/utils"
 	"github.com/sei-protocol/sei-db/ss/types"
 	dbm "github.com/tendermint/tm-db"
 )

tools/migration/utils/helper.go → tools/utils/helper.go

@@ -36,9 +36,9 @@ var ModuleKeys = sdk.NewKVStoreKeys(
 )
 
 var Modules = []string{
-	"acc",
 	"aclaccesscontrol",
 	"authz",
+	"acc",
 	"bank",
 	"capability",
 	"distribution",