laconicd-deprecated/x/evm/querier.go
Austin Abell 7f1eb4b0cf
Query and bug fixes (#110)
* Fix queries and bugs

* Fix issues from rebasing

* Fix rpc query address
2019-09-26 11:36:23 -04:00

116 lines
3.3 KiB
Go

package evm
import (
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/ethermint/utils"
"github.com/cosmos/ethermint/version"
"github.com/cosmos/ethermint/x/evm/types"
ethcmn "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
abci "github.com/tendermint/tendermint/abci/types"
)
// Supported endpoints
const (
QueryProtocolVersion = "protocolVersion"
QueryBalance = "balance"
QueryBlockNumber = "blockNumber"
QueryStorage = "storage"
QueryCode = "code"
QueryNonce = "nonce"
)
// 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) (res []byte, err sdk.Error) {
switch path[0] {
case QueryProtocolVersion:
return queryProtocolVersion(keeper)
case QueryBalance:
return queryBalance(ctx, path, keeper)
case QueryBlockNumber:
return queryBlockNumber(ctx, keeper)
case QueryStorage:
return queryStorage(ctx, path, keeper)
case QueryCode:
return queryCode(ctx, path, keeper)
case QueryNonce:
return queryNonce(ctx, path, keeper)
default:
return nil, sdk.ErrUnknownRequest("unknown query endpoint")
}
}
}
func queryProtocolVersion(keeper Keeper) ([]byte, sdk.Error) {
vers := version.ProtocolVersion
res, err := codec.MarshalJSONIndent(keeper.cdc, hexutil.Uint(vers))
if err != nil {
panic("could not marshal result to JSON")
}
return res, nil
}
func queryBalance(ctx sdk.Context, path []string, keeper Keeper) ([]byte, sdk.Error) {
addr := ethcmn.HexToAddress(path[1])
balance := keeper.GetBalance(ctx, addr)
bRes := types.QueryResBalance{Balance: utils.MarshalBigInt(balance)}
res, err := codec.MarshalJSONIndent(keeper.cdc, bRes)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return res, nil
}
func queryBlockNumber(ctx sdk.Context, keeper Keeper) ([]byte, sdk.Error) {
num := ctx.BlockHeight()
bnRes := types.QueryResBlockNumber{Number: num}
res, err := codec.MarshalJSONIndent(keeper.cdc, bnRes)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return res, nil
}
func queryStorage(ctx sdk.Context, path []string, keeper Keeper) ([]byte, sdk.Error) {
addr := ethcmn.HexToAddress(path[1])
key := ethcmn.HexToHash(path[2])
val := keeper.GetState(ctx, addr, key)
bRes := types.QueryResStorage{Value: val.Bytes()}
res, err := codec.MarshalJSONIndent(keeper.cdc, bRes)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return res, nil
}
func queryCode(ctx sdk.Context, path []string, keeper Keeper) ([]byte, sdk.Error) {
addr := ethcmn.HexToAddress(path[1])
code := keeper.GetCode(ctx, addr)
cRes := types.QueryResCode{Code: code}
res, err := codec.MarshalJSONIndent(keeper.cdc, cRes)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return res, nil
}
func queryNonce(ctx sdk.Context, path []string, keeper Keeper) ([]byte, sdk.Error) {
addr := ethcmn.HexToAddress(path[1])
nonce := keeper.GetNonce(ctx, addr)
nRes := types.QueryResNonce{Nonce: nonce}
res, err := codec.MarshalJSONIndent(keeper.cdc, nRes)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return res, nil
}