ipld-eth-server/pkg/eth/helpers.go

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// VulcanizeDB
// Copyright © 2019 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package eth
import (
"encoding/json"
"fmt"
"github.com/ethereum/go-ethereum/cmd/utils"
log "github.com/sirupsen/logrus"
"os"
sdtypes "github.com/ethereum/go-ethereum/statediff/types"
"github.com/ethereum/go-ethereum/params"
)
func ResolveToNodeType(nodeType int) sdtypes.NodeType {
switch nodeType {
case 0:
return sdtypes.Branch
case 1:
return sdtypes.Extension
case 2:
return sdtypes.Leaf
case 3:
return sdtypes.Removed
default:
return sdtypes.Unknown
}
}
// LoadConfig loads chain config from json file
func LoadConfig(chainConfigPath string) (*params.ChainConfig, error) {
file, err := os.Open(chainConfigPath)
if err != nil {
utils.Fatalf("Failed to read chain config file: %v", err)
return nil, err
}
defer file.Close()
chainConfig := new(params.ChainConfig)
if err := json.NewDecoder(file).Decode(chainConfig); err != nil {
utils.Fatalf("invalid chain config file: %v", err)
return nil, err
}
log.Infof("Using chain config from %s file. Content %+v", chainConfigPath, chainConfig)
return chainConfig, nil
}
// ChainConfig returns the appropriate ethereum chain config for the provided chain id
func ChainConfig(chainID uint64) (*params.ChainConfig, error) {
switch chainID {
case 1:
return params.MainnetChainConfig, nil
case 3:
return params.RopstenChainConfig, nil
case 4:
return params.RinkebyChainConfig, nil
case 5:
return params.GoerliChainConfig, nil
default:
return nil, fmt.Errorf("chain config for chainid %d not available", chainID)
}
}