mirror of https://github.com/ethereum/go-ethereum
cmd, eth: implement full-sync tester (#26035)
This PR adds a parameter to startup, --synctarget. The synctarget flag is a developer-flag, that can be useful in some scenarios as a replacement for a CL node. It defines a fixed block sync target: geth --syncmode=full --synctarget=./block_15816882.hex_rlp The --synctarget is only made available during syncmode=fullpull/26066/head
rjl493456442
2 years ago
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// 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 catalyst |
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import ( |
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"sync" |
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"time" |
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"github.com/ethereum/go-ethereum/core/beacon" |
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"github.com/ethereum/go-ethereum/core/types" |
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"github.com/ethereum/go-ethereum/eth" |
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"github.com/ethereum/go-ethereum/log" |
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"github.com/ethereum/go-ethereum/node" |
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) |
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// FullSyncTester is an auxiliary service that allows Geth to perform full sync
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// alone without consensus-layer attached. Users must specify a valid block as
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// the sync target. This tester can be applied to different networks, no matter
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// it's pre-merge or post-merge, but only for full-sync.
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type FullSyncTester struct { |
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api *ConsensusAPI |
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block *types.Block |
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closed chan struct{} |
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wg sync.WaitGroup |
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} |
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// RegisterFullSyncTester registers the full-sync tester service into the node
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// stack for launching and stopping the service controlled by node.
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func RegisterFullSyncTester(stack *node.Node, backend *eth.Ethereum, block *types.Block) (*FullSyncTester, error) { |
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cl := &FullSyncTester{ |
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api: NewConsensusAPI(backend), |
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block: block, |
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closed: make(chan struct{}), |
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} |
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stack.RegisterLifecycle(cl) |
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return cl, nil |
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} |
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// Start launches the full-sync tester by spinning up a background thread
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// for keeping firing NewPayload-UpdateForkChoice combos with the provided
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// target block, it may or may not trigger the beacon sync depends on if
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// there are protocol peers connected.
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func (tester *FullSyncTester) Start() error { |
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tester.wg.Add(1) |
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go func() { |
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defer tester.wg.Done() |
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ticker := time.NewTicker(time.Second * 5) |
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defer ticker.Stop() |
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for { |
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select { |
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case <-ticker.C: |
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// Don't bother downloader in case it's already syncing.
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if tester.api.eth.Downloader().Synchronising() { |
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continue |
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} |
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// Short circuit in case the target block is already stored
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// locally.
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if tester.api.eth.BlockChain().HasBlock(tester.block.Hash(), tester.block.NumberU64()) { |
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log.Info("Full-sync target reached", "number", tester.block.NumberU64(), "hash", tester.block.Hash()) |
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return |
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} |
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// Shoot out consensus events in order to trigger syncing.
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data := beacon.BlockToExecutableData(tester.block) |
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tester.api.NewPayloadV1(*data) |
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tester.api.ForkchoiceUpdatedV1(beacon.ForkchoiceStateV1{ |
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HeadBlockHash: tester.block.Hash(), |
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SafeBlockHash: tester.block.Hash(), |
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FinalizedBlockHash: tester.block.Hash(), |
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}, nil) |
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case <-tester.closed: |
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return |
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} |
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} |
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}() |
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return nil |
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} |
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// Stop stops the full-sync tester to stop all background activities.
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// This function can only be called for one time.
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func (tester *FullSyncTester) Stop() error { |
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close(tester.closed) |
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tester.wg.Wait() |
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return nil |
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} |
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