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querier.go
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querier.go
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package keeper
import (
"encoding/json"
"fmt"
"strconv"
ethcmn "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
apptypes "github.com/evoblockchain/evochain/app/types"
"github.com/evoblockchain/evochain/app/utils"
"github.com/evoblockchain/evochain/libs/cosmos-sdk/codec"
"github.com/evoblockchain/evochain/libs/cosmos-sdk/store/mpt"
sdk "github.com/evoblockchain/evochain/libs/cosmos-sdk/types"
sdkerrors "github.com/evoblockchain/evochain/libs/cosmos-sdk/types/errors"
abci "github.com/evoblockchain/evochain/libs/tendermint/abci/types"
"github.com/evoblockchain/evochain/x/evm/types"
)
// NewQuerier is the module level router for state queries
func NewQuerier(keeper Keeper) sdk.Querier {
return func(ctx sdk.Context, path []string, req abci.RequestQuery) ([]byte, error) {
if len(path) < 1 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 1 parameter is required")
}
switch path[0] {
case types.QueryBalance:
return queryBalance(ctx, path, keeper)
case types.QueryBlockNumber:
return queryBlockNumber(ctx, keeper)
case types.QueryStorage:
return queryStorage(ctx, path, keeper)
case types.QueryStorageProof:
return queryStorageProof(ctx, path, keeper, req.Height)
case types.QueryStorageRoot:
return queryStorageRootHash(ctx, path, keeper, req.Height)
case types.QueryStorageByKey:
return queryStorageByKey(ctx, path, keeper)
case types.QueryCode:
return queryCode(ctx, path, keeper)
case types.QueryCodeByHash:
return queryCodeByHash(ctx, path, keeper)
case types.QueryHashToHeight:
return queryHashToHeight(ctx, path, keeper)
case types.QueryBloom:
return queryBlockBloom(ctx, path, keeper)
case types.QueryAccount:
return queryAccount(ctx, path, keeper)
case types.QueryExportAccount:
return queryExportAccount(ctx, path, keeper)
case types.QueryParameters:
return queryParams(ctx, keeper)
case types.QueryHeightToHash:
return queryHeightToHash(ctx, path, keeper)
case types.QuerySection:
return querySection(ctx, path, keeper)
case types.QueryContractDeploymentWhitelist:
return queryContractDeploymentWhitelist(ctx, keeper)
case types.QueryContractBlockedList:
return queryContractBlockedList(ctx, keeper)
case types.QueryContractMethodBlockedList:
return queryContractMethodBlockedList(ctx, keeper)
case types.QuerySysContractAddress:
return querySysContractAddress(ctx, keeper)
default:
return nil, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, "unknown query endpoint")
}
}
}
func queryContractMethodBlockedList(ctx sdk.Context, keeper Keeper) (res []byte, err sdk.Error) {
blockedList := types.CreateEmptyCommitStateDB(keeper.GeneratePureCSDBParams(), ctx).GetContractMethodBlockedList()
res, errUnmarshal := codec.MarshalJSONIndent(types.ModuleCdc, blockedList)
if errUnmarshal != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("failed to marshal result to JSON", errUnmarshal.Error()))
}
return res, nil
}
func queryContractBlockedList(ctx sdk.Context, keeper Keeper) (res []byte, err sdk.Error) {
blockedList := types.CreateEmptyCommitStateDB(keeper.GeneratePureCSDBParams(), ctx).GetContractBlockedList()
res, errUnmarshal := codec.MarshalJSONIndent(types.ModuleCdc, blockedList)
if errUnmarshal != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("failed to marshal result to JSON", errUnmarshal.Error()))
}
return res, nil
}
func queryContractDeploymentWhitelist(ctx sdk.Context, keeper Keeper) (res []byte, err sdk.Error) {
whitelist := types.CreateEmptyCommitStateDB(keeper.GeneratePureCSDBParams(), ctx).GetContractDeploymentWhitelist()
res, errUnmarshal := codec.MarshalJSONIndent(types.ModuleCdc, whitelist)
if errUnmarshal != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("failed to marshal result to JSON", errUnmarshal.Error()))
}
return res, nil
}
func queryBalance(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 2 parameters is required")
}
addr := ethcmn.HexToAddress(path[1])
balance := keeper.GetBalance(ctx, addr)
balanceStr, err := utils.MarshalBigInt(balance)
if err != nil {
return nil, err
}
res := types.QueryResBalance{Balance: balanceStr}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryBlockNumber(ctx sdk.Context, keeper Keeper) ([]byte, error) {
num := ctx.BlockHeight()
bnRes := types.QueryResBlockNumber{Number: num}
bz, err := codec.MarshalJSONIndent(keeper.cdc, bnRes)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryStorage(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 3 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 3 parameters is required")
}
addr := ethcmn.HexToAddress(path[1])
key := ethcmn.HexToHash(path[2])
val := keeper.GetState(ctx, addr, key)
res := types.QueryResStorage{Value: val.Bytes()}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryStorageProof(ctx sdk.Context, path []string, keeper Keeper, height int64) ([]byte, error) {
if len(path) < 3 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 3 parameters is required")
}
addr := ethcmn.HexToAddress(path[1])
storageRootHash, err := queryStorageRootBytesInHeight(keeper, addr, height)
if err != nil {
return nil, fmt.Errorf("get %s storage root hash failed: %s", addr, err.Error())
}
// check if storageRootHash is empty
var res types.QueryResStorageProof
if storageRootHash == nil {
res = types.QueryResStorageProof{Value: []byte{}, Proof: [][]byte{}}
} else {
// open storage trie base on storage root hash
storageTrie, err := keeper.db.OpenTrie(ethcmn.BytesToHash(storageRootHash))
if err != nil {
return nil, fmt.Errorf("open %s storage trie failed: %s", addr, err.Error())
}
// append key
key := ethcmn.HexToHash(path[2])
val, err := storageTrie.TryGet(crypto.Keccak256(append(addr.Bytes(), key.Bytes()...)))
if err != nil {
return nil, fmt.Errorf("get %s storage in location %s failed: %s", addr, key, err.Error())
}
// check if value is found
if val == nil {
res = types.QueryResStorageProof{Value: []byte{}, Proof: [][]byte{}}
} else {
var proof mpt.ProofList
if err = storageTrie.Prove(crypto.Keccak256(key.Bytes()), 0, &proof); err != nil {
return nil, fmt.Errorf("trie generate proof failed: %s", err.Error())
}
res = types.QueryResStorageProof{Value: val, Proof: proof}
}
}
// marshal result
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryStorageByKey(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 3 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 3 parameters is required")
}
addr := ethcmn.HexToAddress(path[1])
key := ethcmn.HexToHash(path[2])
val := keeper.GetStateByKey(ctx, addr, key)
res := types.QueryResStorage{Value: val.Bytes()}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryStorageRootHash(ctx sdk.Context, path []string, keeper Keeper, height int64) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 1 parameters is required")
}
addr := ethcmn.HexToAddress(path[1])
storageRootHash, err := queryStorageRootBytesInHeight(keeper, addr, height)
if err != nil {
return nil, fmt.Errorf("get %s storage root hash failed: %s", addr, err.Error())
}
if storageRootHash == nil {
return mpt.EmptyRootHashBytes, nil
} else {
return storageRootHash, nil
}
}
func queryStorageRootBytesInHeight(keeper Keeper, addr ethcmn.Address, height int64) ([]byte, error) {
// query evm tire root hash based on height
evmRootHash := keeper.GetMptRootHash(uint64(height))
if evmRootHash == mpt.NilHash {
return nil, fmt.Errorf("header %d not found", height)
}
// query storage root hash base on address in evmTrie
evmTrie, err := keeper.db.OpenTrie(evmRootHash)
if err != nil {
return nil, fmt.Errorf("open evm trie failed: %s", err.Error())
}
storageRootHash, err := evmTrie.TryGet(addr.Bytes())
if err != nil {
return nil, fmt.Errorf("get %s storage root hash failed: %s", addr, err.Error())
}
return storageRootHash, nil
}
func queryCode(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 2 parameters is required")
}
addr := ethcmn.HexToAddress(path[1])
so := keeper.GetOrNewStateObject(ctx, addr)
code := keeper.GetCodeByHash(ctx, ethcmn.BytesToHash(so.CodeHash()))
res := types.QueryResCode{Code: code}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryCodeByHash(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 2 parameters is required")
}
hash := ethcmn.HexToHash(path[1])
code := keeper.GetCodeByHash(ctx, hash)
res := types.QueryResCode{Code: code}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryHashToHeight(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 2 parameters is required")
}
blockHash := ethcmn.HexToHash(path[1])
blockNumber, found := keeper.GetBlockHeight(ctx, blockHash)
if !found {
return []byte{}, sdkerrors.Wrap(types.ErrKeyNotFound, fmt.Sprintf("block height not found for hash %s", path[1]))
}
res := types.QueryResBlockNumber{Number: blockNumber}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryBlockBloom(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 2 parameters is required")
}
num, err := strconv.ParseInt(path[1], 10, 64)
if err != nil {
return nil, sdkerrors.Wrap(types.ErrStrConvertFailed, fmt.Sprintf("could not unmarshal block height: %s", err))
}
copyCtx := ctx
copyCtx.SetBlockHeight(num)
bloom := keeper.GetBlockBloom(copyCtx, num)
res := types.QueryBloomFilter{Bloom: bloom}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryAccount(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 2 parameters is required")
}
addr := ethcmn.HexToAddress(path[1])
res, err := resolveEthAccount(ctx, keeper, addr)
if err != nil {
return nil, err
}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func resolveEthAccount(ctx sdk.Context, k Keeper, addr ethcmn.Address) (*types.QueryResAccount, error) {
codeHash := mpt.EmptyCodeHashBytes
account := k.accountKeeper.GetAccount(ctx, addr.Bytes())
if account == nil {
return &types.QueryResAccount{Nonce: uint64(0), CodeHash: codeHash, Balance: "0x0"}, nil
}
ethAccount := account.(*apptypes.EthAccount)
if ethAccount == nil {
return &types.QueryResAccount{Nonce: uint64(0), CodeHash: codeHash, Balance: "0x0"}, nil
}
// get balance
balance := ethAccount.Balance(sdk.DefaultBondDenom).BigInt()
if balance == nil {
balance = sdk.ZeroInt().BigInt()
}
balanceStr, err := utils.MarshalBigInt(balance)
if err != nil {
return nil, err
}
// get codeHash
if ethAccount.CodeHash != nil {
codeHash = ethAccount.CodeHash
}
//return
return &types.QueryResAccount{
Balance: balanceStr,
CodeHash: codeHash,
Nonce: ethAccount.Sequence,
}, nil
}
func queryExportAccount(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 2 parameters is required")
}
hexAddress := path[1]
addr := ethcmn.HexToAddress(hexAddress)
var storage types.Storage
err := keeper.ForEachStorage(ctx, addr, func(key, value ethcmn.Hash) bool {
storage = append(storage, types.NewState(key, value))
return false
})
if err != nil {
return nil, err
}
res := types.GenesisAccount{
Address: hexAddress,
Code: keeper.GetCode(ctx, addr),
Storage: storage,
}
// TODO: codec.MarshalJSONIndent doesn't call the String() method of types properly
bz, err := json.MarshalIndent(res, "", "\t")
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryParams(ctx sdk.Context, keeper Keeper) (res []byte, err sdk.Error) {
params := keeper.GetParams(ctx)
res, errUnmarshal := codec.MarshalJSONIndent(types.ModuleCdc, params)
if errUnmarshal != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("failed to marshal result to JSON", errUnmarshal.Error()))
}
return res, nil
}
func queryHeightToHash(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if len(path) < 2 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, at least 2 parameters is required")
}
height, err := strconv.Atoi(path[1])
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"Insufficient parameters, params[1] convert to int failed")
}
hash := keeper.GetHeightHash(ctx, uint64(height))
return hash.Bytes(), nil
}
func querySection(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
if !types.GetEnableBloomFilter() {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"disable bloom filter")
}
if len(path) != 1 {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidRequest,
"wrong parameters, need no parameters")
}
res, err := json.Marshal(types.GetIndexer().StoredSection())
if err != nil {
return nil, err
}
return res, nil
}