laconicd-deprecated/x/evm/querier.go
Dustin Brickwood a61f3b892d
Filtering for eth_getLogs (#120)
* Filtered logs based param criteria
* addded PublicFilterAPI
* added filter logs func to filter based on params
* added Unmarshal func from go-ethereum

* Linted

* made requested changes
2019-10-07 22:32:28 -05:00

183 lines
5.2 KiB
Go

package evm
import (
"strconv"
"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"
QueryHashToHeight = "hashToHeight"
QueryTxLogs = "txLogs"
QueryLogsBloom = "logsBloom"
QueryLogs = "logs"
)
// 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)
case QueryHashToHeight:
return queryHashToHeight(ctx, path, keeper)
case QueryTxLogs:
return queryTxLogs(ctx, path, keeper)
case QueryLogsBloom:
return queryBlockLogsBloom(ctx, path, keeper)
case QueryLogs:
return queryLogs(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
}
func queryHashToHeight(ctx sdk.Context, path []string, keeper Keeper) ([]byte, sdk.Error) {
blockHash := ethcmn.FromHex(path[1])
blockNumber := keeper.GetBlockHashMapping(ctx, blockHash)
bRes := types.QueryResBlockNumber{Number: blockNumber}
res, err := codec.MarshalJSONIndent(keeper.cdc, bRes)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return res, nil
}
func queryBlockLogsBloom(ctx sdk.Context, path []string, keeper Keeper) ([]byte, sdk.Error) {
num, err := strconv.ParseInt(path[1], 10, 64)
if err != nil {
panic("could not unmarshall block number: " + err.Error())
}
bloom := keeper.GetBlockBloomMapping(ctx, num)
bRes := types.QueryBloomFilter{Bloom: bloom}
res, err := codec.MarshalJSONIndent(keeper.cdc, bRes)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return res, nil
}
func queryTxLogs(ctx sdk.Context, path []string, keeper Keeper) ([]byte, sdk.Error) {
txHash := ethcmn.HexToHash(path[1])
logs := keeper.GetLogs(ctx, txHash)
bRes := types.QueryTxLogs{Logs: logs}
res, err := codec.MarshalJSONIndent(keeper.cdc, bRes)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return res, nil
}
func queryLogs(ctx sdk.Context, path []string, keeper Keeper) ([]byte, sdk.Error) {
logs := keeper.Logs(ctx)
l, err := codec.MarshalJSONIndent(keeper.cdc, logs)
if err != nil {
panic("could not marshal result to JSON: " + err.Error())
}
return l, nil
}