161 lines
5.2 KiB
Go
161 lines
5.2 KiB
Go
// Copyright 2023 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 blsync
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import (
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"testing"
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"github.com/ethereum/go-ethereum/beacon/light/request"
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"github.com/ethereum/go-ethereum/beacon/light/sync"
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"github.com/ethereum/go-ethereum/beacon/types"
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"github.com/ethereum/go-ethereum/common"
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zrntcommon "github.com/protolambda/zrnt/eth2/beacon/common"
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"github.com/protolambda/zrnt/eth2/beacon/deneb"
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)
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var (
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testServer1 = testServer("testServer1")
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testServer2 = testServer("testServer2")
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testBlock1 = types.NewBeaconBlock(&deneb.BeaconBlock{
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Slot: 123,
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Body: deneb.BeaconBlockBody{
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ExecutionPayload: deneb.ExecutionPayload{
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BlockNumber: 456,
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BlockHash: zrntcommon.Hash32(common.HexToHash("905ac721c4058d9ed40b27b6b9c1bdd10d4333e4f3d9769100bf9dfb80e5d1f6")),
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},
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},
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})
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testBlock2 = types.NewBeaconBlock(&deneb.BeaconBlock{
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Slot: 124,
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Body: deneb.BeaconBlockBody{
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ExecutionPayload: deneb.ExecutionPayload{
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BlockNumber: 457,
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BlockHash: zrntcommon.Hash32(common.HexToHash("011703f39c664efc1c6cf5f49ca09b595581eec572d4dfddd3d6179a9e63e655")),
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},
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},
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})
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)
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type testServer string
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func (t testServer) Name() string {
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return string(t)
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}
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func TestBlockSync(t *testing.T) {
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ht := &testHeadTracker{}
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blockSync := newBeaconBlockSync(ht)
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headCh := make(chan types.ChainHeadEvent, 16)
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blockSync.SubscribeChainHead(headCh)
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ts := sync.NewTestScheduler(t, blockSync)
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ts.AddServer(testServer1, 1)
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ts.AddServer(testServer2, 1)
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expHeadBlock := func(expHead *types.BeaconBlock) {
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t.Helper()
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var expNumber, headNumber uint64
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if expHead != nil {
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p, _ := expHead.ExecutionPayload()
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expNumber = p.NumberU64()
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}
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select {
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case event := <-headCh:
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headNumber = event.Block.NumberU64()
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default:
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}
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if headNumber != expNumber {
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t.Errorf("Wrong head block, expected block number %d, got %d)", expNumber, headNumber)
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}
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}
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// no block requests expected until head tracker knows about a head
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ts.Run(1)
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expHeadBlock(nil)
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// set block 1 as prefetch head, announced by server 2
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head1 := blockHeadInfo(testBlock1)
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ht.prefetch = head1
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ts.ServerEvent(sync.EvNewHead, testServer2, head1)
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// expect request to server 2 which has announced the head
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ts.Run(2, testServer2, sync.ReqBeaconBlock(head1.BlockRoot))
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// valid response
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ts.RequestEvent(request.EvResponse, ts.Request(2, 1), testBlock1)
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ts.AddAllowance(testServer2, 1)
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ts.Run(3)
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// head block still not expected as the fetched block is not the validated head yet
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expHeadBlock(nil)
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// set as validated head, expect no further requests but block 1 set as head block
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ht.validated.Header = testBlock1.Header()
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ts.Run(4)
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expHeadBlock(testBlock1)
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// set block 2 as prefetch head, announced by server 1
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head2 := blockHeadInfo(testBlock2)
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ht.prefetch = head2
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ts.ServerEvent(sync.EvNewHead, testServer1, head2)
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// expect request to server 1
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ts.Run(5, testServer1, sync.ReqBeaconBlock(head2.BlockRoot))
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// req2 fails, no further requests expected because server 2 has not announced it
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ts.RequestEvent(request.EvFail, ts.Request(5, 1), nil)
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ts.Run(6)
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// set as validated head before retrieving block; now it's assumed to be available from server 2 too
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ht.validated.Header = testBlock2.Header()
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// expect req2 retry to server 2
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ts.Run(7, testServer2, sync.ReqBeaconBlock(head2.BlockRoot))
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// now head block should be unavailable again
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expHeadBlock(nil)
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// valid response, now head block should be block 2 immediately as it is already validated
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ts.RequestEvent(request.EvResponse, ts.Request(7, 1), testBlock2)
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ts.Run(8)
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expHeadBlock(testBlock2)
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}
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type testHeadTracker struct {
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prefetch types.HeadInfo
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validated types.SignedHeader
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}
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func (h *testHeadTracker) PrefetchHead() types.HeadInfo {
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return h.prefetch
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}
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func (h *testHeadTracker) ValidatedOptimistic() (types.OptimisticUpdate, bool) {
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return types.OptimisticUpdate{
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Attested: types.HeaderWithExecProof{Header: h.validated.Header},
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Signature: h.validated.Signature,
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SignatureSlot: h.validated.SignatureSlot,
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}, h.validated.Header != (types.Header{})
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}
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// TODO add test case for finality
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func (h *testHeadTracker) ValidatedFinality() (types.FinalityUpdate, bool) {
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finalized := types.NewExecutionHeader(new(deneb.ExecutionPayloadHeader))
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return types.FinalityUpdate{
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Attested: types.HeaderWithExecProof{Header: h.validated.Header},
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Finalized: types.HeaderWithExecProof{PayloadHeader: finalized},
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Signature: h.validated.Signature,
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SignatureSlot: h.validated.SignatureSlot,
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}, h.validated.Header != (types.Header{})
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}
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