137 lines
3.7 KiB
Go
137 lines
3.7 KiB
Go
// Copyright © 2019 Vulcanize, Inc
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//
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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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//
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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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//
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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 cmd
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import (
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"net/http"
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_ "net/http/pprof"
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"os"
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"os/signal"
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"runtime"
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"sync"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/sirupsen/logrus"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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pkg "github.com/cerc-io/eth-statediff-service/pkg"
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srpc "github.com/cerc-io/eth-statediff-service/pkg/rpc"
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)
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// serveCmd represents the serve command
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var serveCmd = &cobra.Command{
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Use: "serve",
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Short: "Stand up a standalone statediffing RPC service on top of LevelDB",
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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()
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logWithCommand = *logrus.WithField("SubCommand", subCommand)
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serve()
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},
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}
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func init() {
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rootCmd.AddCommand(serveCmd)
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}
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func maxParallelism() int {
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maxProcs := runtime.GOMAXPROCS(0)
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numCPU := runtime.NumCPU()
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if maxProcs < numCPU {
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return maxProcs
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}
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return numCPU
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}
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func serve() {
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logWithCommand.Debug("Running eth-statediff-service serve command")
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logWithCommand.Debugf("Parallelism: %d", maxParallelism())
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reader, chainConf, nodeInfo := instantiateLevelDBReader()
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reportLatestBlock(reader)
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service, err := createStateDiffService(reader, chainConf, nodeInfo)
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if err != nil {
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logWithCommand.Fatal(err)
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}
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// Enable the pprof agent if configured
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if viper.GetBool("debug.pprof") {
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// See: https://www.farsightsecurity.com/blog/txt-record/go-remote-profiling-20161028/
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// For security reasons: do not use the default http multiplexor elsewhere in this process.
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go func() {
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logWithCommand.Info("Starting pprof listener on port 6060")
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logWithCommand.Fatal(http.ListenAndServe("localhost:6060", nil))
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}()
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}
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// short circuit if we only want to perform prerun
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if viper.GetBool("prerun.only") {
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parallel := viper.GetBool("prerun.parallel")
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if err := service.Run(nil, parallel); err != nil {
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logWithCommand.Fatalf("Unable to perform prerun: %v", err)
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}
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return
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}
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// start service and servers
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var wg sync.WaitGroup
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if err := service.Loop(&wg); err != nil {
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logWithCommand.Fatalf("unable to start statediff service: %v", err)
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}
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if err := startServers(service); err != nil {
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logWithCommand.Fatal(err)
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}
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logWithCommand.Debug("RPC servers successfully spun up; awaiting requests")
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// clean shutdown
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shutdown := make(chan os.Signal)
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signal.Notify(shutdown, os.Interrupt)
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<-shutdown
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logWithCommand.Info("Received interrupt signal, shutting down")
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service.Stop()
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wg.Wait()
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}
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func startServers(serv *pkg.Service) error {
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ipcPath := viper.GetString("server.ipcPath")
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httpPath := viper.GetString("server.httpPath")
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if ipcPath == "" && httpPath == "" {
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logWithCommand.Fatal("Need an IPC path and/or an HTTP path")
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}
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if ipcPath != "" {
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_, _, err := srpc.StartIPCEndpoint(ipcPath, serv.APIs())
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if err != nil {
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return err
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}
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}
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if httpPath != "" {
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_, err := srpc.StartHTTPEndpoint(httpPath, serv.APIs(), []string{"statediff"}, nil, []string{"*"}, rpc.HTTPTimeouts{})
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if err != nil {
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return err
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}
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} else {
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logWithCommand.Info("HTTP server is disabled")
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}
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return nil
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}
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