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cmd, eth: switch the dev synctarget to hash from block
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| // Copyright 2023 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/>. | ||
|
|
||
| package downloader | ||
|
|
||
| import ( | ||
| "errors" | ||
| "time" | ||
|
|
||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/ethereum/go-ethereum/log" | ||
| ) | ||
|
|
||
| // BeaconDevSync is a development helper to test synchronization by providing | ||
| // a block hash instead of header to run the beacon sync against. | ||
| // | ||
| // The method will reach out to the network to retrieve the header of the sync | ||
| // target instead of receiving it from the consensus node. | ||
| // | ||
| // Note, this must not be used in live code. If the forkchcoice endpoint where | ||
| // to use this instead of giving us the payload first, then essentially nobody | ||
| // in the network would have the block yet that we'd attempt to retrieve. | ||
| func (d *Downloader) BeaconDevSync(mode SyncMode, hash common.Hash, stop chan struct{}) error { | ||
| // Be very loud that this code should not be used in a live node | ||
| log.Warn("----------------------------------") | ||
| log.Warn("Beacon syncing with hash as target", "hash", hash) | ||
| log.Warn("This is unhealthy for a live node!") | ||
| log.Warn("----------------------------------") | ||
|
|
||
| log.Info("Waiting for peers to retrieve sync target") | ||
| for { | ||
| // If the node is going down, unblock | ||
| select { | ||
| case <-stop: | ||
| return errors.New("stop requested") | ||
| default: | ||
| } | ||
| // Pick a random peer to sync from and keep retrying if none are yet | ||
| // available due to fresh startup | ||
| d.peers.lock.RLock() | ||
| var peer *peerConnection | ||
| for _, peer = range d.peers.peers { | ||
| break | ||
| } | ||
| d.peers.lock.RUnlock() | ||
|
|
||
| if peer == nil { | ||
| time.Sleep(time.Second) | ||
| continue | ||
| } | ||
| // Found a peer, attempt to retrieve the header whilst blocking and | ||
| // retry if it fails for whatever reason | ||
| log.Info("Attempting to retrieve sync target", "peer", peer.id) | ||
| headers, metas, err := d.fetchHeadersByHash(peer, hash, 1, 0, false) | ||
| if err != nil || len(headers) != 1 { | ||
| log.Warn("Failed to fetch sync target", "headers", len(headers), "err", err) | ||
| time.Sleep(time.Second) | ||
| continue | ||
| } | ||
| // Head header retrieved, if the hash matches, start the actual sync | ||
| if metas[0] != hash { | ||
| log.Error("Received invalid sync target", "want", hash, "have", metas[0]) | ||
| time.Sleep(time.Second) | ||
| continue | ||
| } | ||
| return d.BeaconSync(mode, headers[0], headers[0]) | ||
| } | ||
| } |
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