106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
// Copyright 2022 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser 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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// The go-ethereum library 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"context"
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"fmt"
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"os"
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"slices"
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"github.com/ethereum/go-ethereum/beacon/blsync"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/internal/debug"
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"github.com/ethereum/go-ethereum/internal/flags"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/urfave/cli/v2"
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)
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func main() {
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app := flags.NewApp("beacon light syncer tool")
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app.Flags = slices.Concat([]cli.Flag{
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utils.BeaconApiFlag,
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utils.BeaconApiHeaderFlag,
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utils.BeaconThresholdFlag,
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utils.BeaconNoFilterFlag,
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utils.BeaconConfigFlag,
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utils.BeaconGenesisRootFlag,
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utils.BeaconGenesisTimeFlag,
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utils.BeaconCheckpointFlag,
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//TODO datadir for optional permanent database
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utils.MainnetFlag,
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utils.SepoliaFlag,
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utils.HoleskyFlag,
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utils.BlsyncApiFlag,
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utils.BlsyncJWTSecretFlag,
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},
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debug.Flags,
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)
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app.Before = func(ctx *cli.Context) error {
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flags.MigrateGlobalFlags(ctx)
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return debug.Setup(ctx)
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}
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app.After = func(ctx *cli.Context) error {
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debug.Exit()
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return nil
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}
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app.Action = sync
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if err := app.Run(os.Args); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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}
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func sync(ctx *cli.Context) error {
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// set up blsync
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client := blsync.NewClient(ctx)
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client.SetEngineRPC(makeRPCClient(ctx))
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client.Start()
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// run until stopped
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<-ctx.Done()
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client.Stop()
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return nil
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}
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func makeRPCClient(ctx *cli.Context) *rpc.Client {
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if !ctx.IsSet(utils.BlsyncApiFlag.Name) {
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log.Warn("No engine API target specified, performing a dry run")
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return nil
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}
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if !ctx.IsSet(utils.BlsyncJWTSecretFlag.Name) {
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utils.Fatalf("JWT secret parameter missing") //TODO use default if datadir is specified
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}
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engineApiUrl, jwtFileName := ctx.String(utils.BlsyncApiFlag.Name), ctx.String(utils.BlsyncJWTSecretFlag.Name)
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var jwtSecret [32]byte
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if jwt, err := node.ObtainJWTSecret(jwtFileName); err == nil {
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copy(jwtSecret[:], jwt)
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} else {
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utils.Fatalf("Error loading or generating JWT secret: %v", err)
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}
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auth := node.NewJWTAuth(jwtSecret)
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cl, err := rpc.DialOptions(context.Background(), engineApiUrl, rpc.WithHTTPAuth(auth))
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if err != nil {
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utils.Fatalf("Could not create RPC client: %v", err)
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}
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return cl
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}
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