eth-statediff-service/cmd/serve.go

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// Copyright © 2019 Vulcanize, Inc
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//
// 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 cmd
import (
"fmt"
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"os"
"os/signal"
"sync"
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"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc"
"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
sd "github.com/vulcanize/eth-statediff-service/pkg"
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)
// serveCmd represents the serve command
var serveCmd = &cobra.Command{
Use: "serve",
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Short: "Standup a standalone statediffing RPC service on top of leveldb",
Long: `Usage
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./eth-statediff-service serve --config={path to toml config file}`,
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Run: func(cmd *cobra.Command, args []string) {
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subCommand = cmd.CalledAs()
logWithCommand = *logrus.WithField("SubCommand", subCommand)
serve()
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},
}
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func serve() {
logWithCommand.Info("starting statediff RPC service")
// load params
path := viper.GetString("leveldb.path")
ancientPath := viper.GetString("leveldb.ancient")
if path == "" || ancientPath == "" {
logWithCommand.Fatal("require a valid eth leveldb primary datastore path and ancient datastore path")
}
chainID := viper.GetUint64("eth.chainID")
config, err := chainConfig(chainID)
if err != nil {
logWithCommand.Fatal(err)
}
// create leveldb reader
logWithCommand.Info("creating leveldb reader")
lvlDBReader, err := sd.NewLvlDBReader(path, ancientPath, config)
if err != nil {
logWithCommand.Fatal(err)
}
// create statediff service
logWithCommand.Info("creating statediff service")
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statediffService, err := sd.NewStateDiffService(
lvlDBReader, sd.Config{Workers: viper.GetUint("statediff.workers")})
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if err != nil {
logWithCommand.Fatal(err)
}
// start service and servers
logWithCommand.Info("starting statediff service")
wg := new(sync.WaitGroup)
go statediffService.Loop(wg)
logWithCommand.Info("starting rpc servers")
if err := startServers(statediffService); err != nil {
logWithCommand.Fatal(err)
}
logWithCommand.Info("rpc servers successfully spun up; awaiting requests")
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// clean shutdown
shutdown := make(chan os.Signal)
signal.Notify(shutdown, os.Interrupt)
<-shutdown
logWithCommand.Info("received interrupt signal, shutting down")
statediffService.Stop()
wg.Wait()
}
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func init() {
rootCmd.AddCommand(serveCmd)
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serveCmd.PersistentFlags().String("leveldb-path", "", "path to primary datastore")
serveCmd.PersistentFlags().String("ancient-path", "", "path to ancient datastore")
serveCmd.PersistentFlags().Uint("chain-id", 1, "ethereum chain id (mainnet = 1)")
serveCmd.PersistentFlags().String("http-path", "", "vdb server http path")
serveCmd.PersistentFlags().String("ipc-path", "", "vdb server ipc path")
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viper.BindPFlag("leveldb.path", serveCmd.PersistentFlags().Lookup("leveldb-path"))
viper.BindPFlag("leveldb.ancient", serveCmd.PersistentFlags().Lookup("ancient-path"))
viper.BindPFlag("eth.chainID", serveCmd.PersistentFlags().Lookup("chain-id"))
viper.BindPFlag("server.httpPath", serveCmd.PersistentFlags().Lookup("http-path"))
viper.BindPFlag("server.ipcPath", serveCmd.PersistentFlags().Lookup("ipc-path"))
}
func startServers(serv sd.IService) error {
ipcPath := viper.GetString("server.ipcPath")
httpPath := viper.GetString("server.httpPath")
if ipcPath == "" && httpPath == "" {
logWithCommand.Fatal("need an ipc path and/or an http path")
}
if ipcPath != "" {
logWithCommand.Info("starting up IPC server")
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_, _, err := rpc.StartIPCEndpoint(ipcPath, serv.APIs())
if err != nil {
return err
}
}
if httpPath != "" {
logWithCommand.Info("starting up HTTP server")
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if _, _, err := rpc.StartHTTPEndpoint(httpPath, serv.APIs(), []string{sd.APIName}, nil, nil, rpc.HTTPTimeouts{}); err != nil {
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return err
}
}
return nil
}
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func chainConfig(chainID uint64) (*params.ChainConfig, error) {
switch chainID {
case 1:
return params.MainnetChainConfig, nil
case 3:
return params.TestnetChainConfig, nil // Ropsten
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)
}
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}