Merge branch 'v1.10.17-statediff-3.2.1' into v4

statediff/config.go

@@ -66,6 +66,10 @@ func (p *Params) ComputeWatchedAddressesLeafKeys() {
 	}
 }
 
+func (p *Params) WatchedAddressesLeafKeys() map[common.Hash]struct{} {
+	return p.watchedAddressesLeafKeys
+}
+
 // ParamsWithMutex allows to lock the parameters while they are being updated | read from
 type ParamsWithMutex struct {
 	Params

statediff/helpers.go

@@ -0,0 +1,65 @@
+// VulcanizeDB
+// Copyright © 2022 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 statediff
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+
+	"github.com/ethereum/go-ethereum/log"
+
+	"github.com/ethereum/go-ethereum/params"
+)
+
+// LoadConfig loads chain config from json file
+func LoadConfig(chainConfigPath string) (*params.ChainConfig, error) {
+	file, err := os.Open(chainConfigPath)
+	if err != nil {
+		log.Error(fmt.Sprintf("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 {
+		log.Error(fmt.Sprintf("invalid chain config file: %v", err))
+
+		return nil, err
+	}
+
+	log.Info(fmt.Sprintf("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)
+	}
+}