64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
// VulcanizeDB
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// Copyright © 2022 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package statediff
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import (
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"encoding/json"
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"fmt"
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"os"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/params"
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)
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// LoadConfig loads chain config from json file
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func LoadConfig(chainConfigPath string) (*params.ChainConfig, error) {
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file, err := os.Open(chainConfigPath)
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if err != nil {
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log.Error(fmt.Sprintf("Failed to read chain config file: %v", err))
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return nil, err
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}
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defer file.Close()
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chainConfig := new(params.ChainConfig)
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if err := json.NewDecoder(file).Decode(chainConfig); err != nil {
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log.Error(fmt.Sprintf("invalid chain config file: %v", err))
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return nil, err
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}
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log.Info(fmt.Sprintf("Using chain config from %s file. Content %+v", chainConfigPath, chainConfig))
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return chainConfig, nil
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}
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// ChainConfig returns the appropriate ethereum chain config for the provided chain id
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func ChainConfig(chainID uint64) (*params.ChainConfig, error) {
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switch chainID {
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case 1:
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return params.MainnetChainConfig, nil
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case 4:
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return params.RinkebyChainConfig, nil
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case 5:
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return params.GoerliChainConfig, nil
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default:
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return nil, fmt.Errorf("chain config for chainid %d not available", chainID)
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}
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}
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