laconicd-deprecated/x/evm/keeper/querier.go
Federico Kunze ef1bef16e5
rpc: protocol version (#575)
* evm: protocol version

* changelog

* version

* fix

* support latest version only
2020-12-08 20:51:26 +01:00

218 lines
5.9 KiB
Go

package keeper
import (
"encoding/json"
"fmt"
"strconv"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/ethermint/utils"
"github.com/cosmos/ethermint/x/evm/types"
ethcmn "github.com/ethereum/go-ethereum/common"
abci "github.com/tendermint/tendermint/abci/types"
)
// NewQuerier is the module level router for state queries
func NewQuerier(keeper Keeper) sdk.Querier {
return func(ctx sdk.Context, path []string, _ abci.RequestQuery) ([]byte, error) {
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.QueryCode:
return queryCode(ctx, path, keeper)
case types.QueryHashToHeight:
return queryHashToHeight(ctx, path, keeper)
case types.QueryTransactionLogs:
return queryTransactionLogs(ctx, path, keeper)
case types.QueryBloom:
return queryBlockBloom(ctx, path, keeper)
case types.QueryLogs:
return queryLogs(ctx, keeper)
case types.QueryAccount:
return queryAccount(ctx, path, keeper)
case types.QueryExportAccount:
return queryExportAccount(ctx, path, keeper)
default:
return nil, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, "unknown query endpoint")
}
}
}
func queryBalance(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
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) {
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 queryCode(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
addr := ethcmn.HexToAddress(path[1])
code := keeper.GetCode(ctx, addr)
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) {
blockHash := ethcmn.FromHex(path[1])
blockNumber, found := keeper.GetBlockHash(ctx, blockHash)
if !found {
return []byte{}, fmt.Errorf("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) {
num, err := strconv.ParseInt(path[1], 10, 64)
if err != nil {
return nil, fmt.Errorf("could not unmarshal block height: %w", err)
}
bloom, found := keeper.GetBlockBloom(ctx.WithBlockHeight(num), num)
if !found {
return nil, fmt.Errorf("block bloom not found for height %d", 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 queryTransactionLogs(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
txHash := ethcmn.HexToHash(path[1])
logs, err := keeper.GetLogs(ctx, txHash)
if err != nil {
return nil, err
}
res := types.QueryETHLogs{Logs: logs}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryLogs(ctx sdk.Context, keeper Keeper) ([]byte, error) {
logs := keeper.AllLogs(ctx)
res := types.QueryETHLogs{Logs: logs}
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) {
addr := ethcmn.HexToAddress(path[1])
so := keeper.GetOrNewStateObject(ctx, addr)
balance, err := utils.MarshalBigInt(so.Balance())
if err != nil {
return nil, err
}
res := types.QueryResAccount{
Balance: balance,
CodeHash: so.CodeHash(),
Nonce: so.Nonce(),
}
bz, err := codec.MarshalJSONIndent(keeper.cdc, res)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrJSONMarshal, err.Error())
}
return bz, nil
}
func queryExportAccount(ctx sdk.Context, path []string, keeper Keeper) ([]byte, error) {
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
}
balanceInt := keeper.GetBalance(ctx, addr)
balance := sdk.NewIntFromBigInt(balanceInt)
res := types.GenesisAccount{
Address: hexAddress,
Balance: balance,
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
}