cmd/bltest: manual testing tool for ethclient/lightclient

cmd/bltest/main.go

@@ -0,0 +1,98 @@
+// Copyright 2024 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library 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 Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+//TODO only for manual testing of ethclient/lightclient; remove before merging to master
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/ethereum/go-ethereum/beacon/config"
+	"github.com/ethereum/go-ethereum/cmd/utils"
+	"github.com/ethereum/go-ethereum/ethclient/lightclient"
+	"github.com/ethereum/go-ethereum/internal/flags"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/mattn/go-colorable"
+	"github.com/mattn/go-isatty"
+	"github.com/urfave/cli/v2"
+)
+
+var (
+	verbosityFlag = &cli.IntFlag{
+		Name:     "verbosity",
+		Usage:    "Logging verbosity: 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail",
+		Value:    3,
+		Category: flags.LoggingCategory,
+	}
+	vmoduleFlag = &cli.StringFlag{
+		Name:     "vmodule",
+		Usage:    "Per-module verbosity: comma-separated list of <pattern>=<level> (e.g. eth/*=5,p2p=4)",
+		Value:    "",
+		Hidden:   true,
+		Category: flags.LoggingCategory,
+	}
+)
+
+func main() {
+	app := flags.NewApp("beacon light syncer tool")
+	app.Flags = []cli.Flag{
+		utils.BeaconApiFlag,
+		utils.BeaconApiHeaderFlag,
+		utils.BeaconThresholdFlag,
+		utils.BeaconNoFilterFlag,
+		utils.BeaconConfigFlag,
+		utils.BeaconGenesisRootFlag,
+		utils.BeaconGenesisTimeFlag,
+		utils.BeaconCheckpointFlag,
+		//TODO datadir for optional permanent database
+		utils.MainnetFlag,
+		utils.SepoliaFlag,
+		utils.GoerliFlag,
+		verbosityFlag,
+		vmoduleFlag,
+	}
+	app.Action = sync
+
+	if err := app.Run(os.Args); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func sync(ctx *cli.Context) error {
+	usecolor := (isatty.IsTerminal(os.Stderr.Fd()) || isatty.IsCygwinTerminal(os.Stderr.Fd())) && os.Getenv("TERM") != "dumb"
+	output := io.Writer(os.Stderr)
+	if usecolor {
+		output = colorable.NewColorable(os.Stderr)
+	}
+	verbosity := log.FromLegacyLevel(ctx.Int(verbosityFlag.Name))
+	log.SetDefault(log.NewLogger(log.NewTerminalHandlerWithLevel(output, verbosity, usecolor)))
+
+	rpcClient, err := rpc.Dial(ctx.String(utils.BltestApiFlag.Name))
+	if err != nil {
+		utils.Fatalf("Could not create RPC client: %v", err)
+	}
+	client := lightclient.NewClient(config.MakeLightClientConfig(ctx), nil, rpcClient)
+	client.Start()
+
+	// run until stopped
+	<-ctx.Done()
+	client.Stop()
+	return nil
+}