use custom cache store to properly implement interfaces

go.mod

@@ -15,6 +15,7 @@ require (
 	cosmossdk.io/x/feegrant v0.1.0
 	cosmossdk.io/x/tx v0.13.3
 	cosmossdk.io/x/upgrade v0.1.3
+	github.com/allegro/bigcache/v3 v3.1.0
 	github.com/cometbft/cometbft v0.38.10
 	github.com/cosmos/cosmos-db v1.0.2
 	github.com/cosmos/cosmos-proto v1.0.0-beta.5
@@ -72,7 +73,6 @@ require (
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/StackExchange/wmi v1.2.1 // indirect
 	github.com/VictoriaMetrics/fastcache v1.12.1 // indirect
-	github.com/allegro/bigcache/v3 v3.1.0 // indirect
 	github.com/avast/retry-go/v4 v4.5.1 // indirect
 	github.com/aws/aws-sdk-go v1.44.312 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect

indexer/abci.go

@@ -29,11 +29,8 @@
 func (e *EVMIndexerImpl) ListenFinalizeBlock(ctx context.Context, req abci.RequestFinalizeBlock, res abci.ResponseFinalizeBlock) error {
 	sdkCtx := sdk.UnwrapSDKContext(ctx)
 
-	batch := e.db.NewBatch()
-	defer batch.Close()
-
 	// compute base fee from the opChild gas prices
-	baseFee, err := e.baseFee(ctx)
+	baseFee, err := e.baseFee(sdkCtx)
 	if err != nil {
 		e.logger.Error("failed to get base fee", "err", err)
 		return err
@@ -67,11 +64,11 @@
 
 		// index tx hash
 		cosmosTxHash := comettypes.Tx(txBytes).Hash()
-		if err := e.TxHashToCosmosTxHash.Set(ctx, ethTx.Hash().Bytes(), cosmosTxHash); err != nil {
+		if err := e.TxHashToCosmosTxHash.Set(sdkCtx, ethTx.Hash().Bytes(), cosmosTxHash); err != nil {
 			e.logger.Error("failed to store tx hash to cosmos tx hash", "err", err)
 			return err
 		}
-		if err := e.CosmosTxHashToTxHash.Set(ctx, cosmosTxHash, ethTx.Hash().Bytes()); err != nil {
+		if err := e.CosmosTxHashToTxHash.Set(sdkCtx, cosmosTxHash, ethTx.Hash().Bytes()); err != nil {
 			e.logger.Error("failed to store cosmos tx hash to tx hash", "err", err)
 			return err
 		}
@@ -147,17 +144,17 @@
 
 		// store tx
 		rpcTx := rpctypes.NewRPCTransaction(ethTx, blockHash, uint64(blockHeight), uint64(receipt.TransactionIndex), chainId)
-		if err := e.TxMap.Set(ctx, txHash.Bytes(), *rpcTx); err != nil {
+		if err := e.TxMap.Set(sdkCtx, txHash.Bytes(), *rpcTx); err != nil {
 			e.logger.Error("failed to store rpcTx", "err", err)
 			return err
 		}
-		if err := e.TxReceiptMap.Set(ctx, txHash.Bytes(), *receipt); err != nil {
+		if err := e.TxReceiptMap.Set(sdkCtx, txHash.Bytes(), *receipt); err != nil {
 			e.logger.Error("failed to store tx receipt", "err", err)
 			return err
 		}
 
 		// store index
-		if err := e.BlockAndIndexToTxHashMap.Set(ctx, collections.Join(uint64(blockHeight), uint64(receipt.TransactionIndex)), txHash.Bytes()); err != nil {
+		if err := e.BlockAndIndexToTxHashMap.Set(sdkCtx, collections.Join(uint64(blockHeight), uint64(receipt.TransactionIndex)), txHash.Bytes()); err != nil {
 			e.logger.Error("failed to store blockAndIndexToTxHash", "err", err)
 			return err
 		}
@@ -181,11 +178,11 @@
 	}
 
 	// index block header
-	if err := e.BlockHeaderMap.Set(ctx, uint64(blockHeight), blockHeader); err != nil {
+	if err := e.BlockHeaderMap.Set(sdkCtx, uint64(blockHeight), blockHeader); err != nil {
 		e.logger.Error("failed to marshal blockHeader", "err", err)
 		return err
 	}
-	if err := e.BlockHashToNumberMap.Set(ctx, blockHash.Bytes(), uint64(blockHeight)); err != nil {
+	if err := e.BlockHashToNumberMap.Set(sdkCtx, blockHash.Bytes(), uint64(blockHeight)); err != nil {
 		e.logger.Error("failed to store blockHashToNumber", "err", err)
 		return err
 	}

indexer/indexer.go

@@ -17,7 +17,7 @@
 	coretypes "github.com/ethereum/go-ethereum/core/types"
 
 	opchildkeeper "github.com/initia-labs/OPinit/x/opchild/keeper"
-	"github.com/initia-labs/kvindexer/store"
+
 	rpctypes "github.com/initia-labs/minievm/jsonrpc/types"
 	evmkeeper "github.com/initia-labs/minievm/x/evm/keeper"
 )
@@ -55,7 +55,7 @@
 	txConfig client.TxConfig
 	appCodec codec.Codec
 
-	store         *store.CacheStore
+	store         *CacheStore
 	evmKeeper     *evmkeeper.Keeper
 	opChildKeeper *opchildkeeper.Keeper
 
@@ -82,7 +82,7 @@
 	opChildKeeper *opchildkeeper.Keeper,
 ) (EVMIndexer, error) {
 	// TODO make cache size configurable
-	store := store.NewCacheStore(dbadapter.Store{DB: db}, 100)
+	store := NewCacheStore(dbadapter.Store{DB: db}, 100)
 	sb := collections.NewSchemaBuilderFromAccessor(
 		func(ctx context.Context) corestoretypes.KVStore {
 			return store

indexer/store.go

@@ -0,0 +1,123 @@
+package indexer
+
+import (
+	"context"
+
+	corestoretypes "cosmossdk.io/core/store"
+	"cosmossdk.io/errors"
+	cachekv "cosmossdk.io/store/cachekv"
+	storetypes "cosmossdk.io/store/types"
+	bigcache "github.com/allegro/bigcache/v3"
+)
+
+var _ corestoretypes.KVStore = (*CacheStore)(nil)
+
+type CacheStore struct {
+	store storetypes.CacheKVStore
+	cache *bigcache.BigCache
+}
+
+func NewCacheStore(store storetypes.KVStore, capacity int) *CacheStore {
+	// default with no eviction and custom hard max cache capacity
+	cacheCfg := bigcache.DefaultConfig(0)
+	cacheCfg.Verbose = false
+	cacheCfg.HardMaxCacheSize = capacity
+
+	cache, err := bigcache.New(context.Background(), cacheCfg)
+	if err != nil {
+		panic(err)
+	}
+
+	return &CacheStore{
+		store: cachekv.NewStore(store),
+		cache: cache,
+	}
+}
+
+// Get returns nil iff key doesn't exist. Errors on nil key.
+func (c CacheStore) Get(key []byte) ([]byte, error) {
+	storetypes.AssertValidKey(key)
+
+	if value, err := c.cache.Get(string(key)); err == nil {
+		return value, nil
+	}
+
+	// get from store and write to cache
+	value := c.store.Get(key)
+	if value == nil {
+		return nil, nil
+	}
+
+	// ignore cache error
+	_ = c.cache.Set(string(key), value)
+
+	return value, nil
+}
+
+// Has checks if a key exists. Errors on nil key.
+func (c CacheStore) Has(key []byte) (bool, error) {
+	_, err := c.cache.Get(string(key))
+	if err == nil {
+		return true, nil
+	}
+
+	value := c.store.Get(key)
+	if value == nil {
+		return false, nil
+	}
+
+	// ignore cache error
+	_ = c.cache.Set(string(key), value)
+
+	return true, nil
+}
+
+// Set sets the key. Errors on nil key or value.
+func (c CacheStore) Set(key, value []byte) error {
+	storetypes.AssertValidKey(key)
+	storetypes.AssertValidValue(value)
+
+	err := c.cache.Set(string(key), value)
+	if err != nil {
+		return errors.Wrap(err, "failed to set cache")
+	}
+	c.store.Set(key, value)
+
+	return nil
+}
+
+// Delete deletes the key. Errors on nil key.
+func (c CacheStore) Delete(key []byte) error {
+	storetypes.AssertValidKey(key)
+
+	err := c.cache.Delete(string(key))
+	if err != nil && errors.IsOf(err, bigcache.ErrEntryNotFound) {
+		return errors.Wrap(err, "failed to delete cache")
+	}
+	c.store.Delete(key)
+
+	return nil
+}
+
+// Iterator iterates over a domain of keys in ascending order. End is exclusive.
+// Start must be less than end, or the Iterator is invalid.
+// Iterator must be closed by caller.
+// To iterate over entire domain, use store.Iterator(nil, nil)
+// CONTRACT: No writes may happen within a domain while an iterator exists over it.
+// Exceptionally allowed for cachekv.Store, safe to write in the modules.
+func (c CacheStore) Iterator(start, end []byte) (storetypes.Iterator, error) {
+	return c.store.Iterator(start, end), nil
+}
+
+// ReverseIterator iterates over a domain of keys in descending order. End is exclusive.
+// Start must be less than end, or the Iterator is invalid.
+// Iterator must be closed by caller.
+// CONTRACT: No writes may happen within a domain while an iterator exists over it.
+// Exceptionally allowed for cachekv.Store, safe to write in the modules.
+func (c CacheStore) ReverseIterator(start, end []byte) (storetypes.Iterator, error) {
+	return c.store.ReverseIterator(start, end), nil
+}
+
+func (c CacheStore) Write() {
+	c.store.Write()
+}

indexer/utils.go

@@ -80,14 +80,11 @@
 type collJsonVal[T any] struct{}
 
 func (c collJsonVal[T]) Encode(value T) ([]byte, error) {
-	return json.Marshal(value)
+	return c.EncodeJSON(value)
 }
 
 func (c collJsonVal[T]) Decode(b []byte) (T, error) {
-	var value T
-
-	err := json.Unmarshal(b, &value)
-	return value, err
+	return c.DecodeJSON(b)
 }
 
 func (c collJsonVal[T]) EncodeJSON(value T) ([]byte, error) {