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eth, eth/downloader: remove references to LightChain, LightSync (#29711)

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Co-authored-by: Gary Rong <garyrong0905@gmail.com>
pull/29603/head
jwasinger 6 months ago committed by GitHub
parent af0a3274be
commit e517183719
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GPG Key ID: B5690EEEBB952194
6 changed files with 46 additions and 90 deletions
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  1. 4
      eth/backend.go
  2. 6
      eth/downloader/beaconsync.go
  3. 41
      eth/downloader/downloader.go
  4. 24
      eth/downloader/downloader_test.go
  5. 11
      eth/downloader/modes.go
  6. 2
      eth/handler.go

4
eth/backend.go
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@ -19,7 +19,6 @@ package eth
import (
"encoding/json"
"errors"
"fmt"
"math/big"
"runtime"
@ -105,9 +104,6 @@ type Ethereum struct {
// whose lifecycle will be managed by the provided node.
func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
// Ensure configuration values are compatible and sane
if config.SyncMode == downloader.LightSync {
return nil, errors.New("can't run eth.Ethereum in light sync mode, light mode has been deprecated")
}
if !config.SyncMode.IsValid() {
return nil, fmt.Errorf("invalid sync mode %d", config.SyncMode)
}

6
eth/downloader/beaconsync.go
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@ -202,7 +202,7 @@ func (d *Downloader) findBeaconAncestor() (uint64, error) {
case SnapSync:
chainHead = d.blockchain.CurrentSnapBlock()
default:
chainHead = d.lightchain.CurrentHeader()
panic("unknown sync mode")
}
number := chainHead.Number.Uint64()
@ -222,7 +222,7 @@ func (d *Downloader) findBeaconAncestor() (uint64, error) {
case SnapSync:
linked = d.blockchain.HasFastBlock(beaconTail.ParentHash, beaconTail.Number.Uint64()-1)
default:
linked = d.blockchain.HasHeader(beaconTail.ParentHash, beaconTail.Number.Uint64()-1)
panic("unknown sync mode")
}
if !linked {
// This is a programming error. The chain backfiller was called with a
@ -257,7 +257,7 @@ func (d *Downloader) findBeaconAncestor() (uint64, error) {
case SnapSync:
known = d.blockchain.HasFastBlock(h.Hash(), n)
default:
known = d.lightchain.HasHeader(h.Hash(), n)
panic("unknown sync mode")
}
if !known {
end = check

41
eth/downloader/downloader.go
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@ -67,7 +67,6 @@ var (
errCancelContentProcessing = errors.New("content processing canceled (requested)")
errCanceled = errors.New("syncing canceled (requested)")
errNoPivotHeader = errors.New("pivot header is not found")
ErrMergeTransition = errors.New("legacy sync reached the merge")
)
// peerDropFn is a callback type for dropping a peer detected as malicious.
@ -98,7 +97,6 @@ type Downloader struct {
syncStatsChainHeight uint64 // Highest block number known when syncing started
syncStatsLock sync.RWMutex // Lock protecting the sync stats fields
lightchain LightChain
blockchain BlockChain
// Callbacks
@ -143,8 +141,8 @@ type Downloader struct {
syncLogTime time.Time // Time instance when status was last reported
}
// LightChain encapsulates functions required to synchronise a light chain.
type LightChain interface {
// BlockChain encapsulates functions required to sync a (full or snap) blockchain.
type BlockChain interface {
// HasHeader verifies a header's presence in the local chain.
HasHeader(common.Hash, uint64) bool
@ -162,11 +160,6 @@ type LightChain interface {
// SetHead rewinds the local chain to a new head.
SetHead(uint64) error
}
// BlockChain encapsulates functions required to sync a (full or snap) blockchain.
type BlockChain interface {
LightChain
// HasBlock verifies a block's presence in the local chain.
HasBlock(common.Hash, uint64) bool
@ -201,17 +194,13 @@ type BlockChain interface {
}
// New creates a new downloader to fetch hashes and blocks from remote peers.
func New(stateDb ethdb.Database, mux *event.TypeMux, chain BlockChain, lightchain LightChain, dropPeer peerDropFn, success func()) *Downloader {
if lightchain == nil {
lightchain = chain
}
func New(stateDb ethdb.Database, mux *event.TypeMux, chain BlockChain, dropPeer peerDropFn, success func()) *Downloader {
dl := &Downloader{
stateDB: stateDb,
mux: mux,
queue: newQueue(blockCacheMaxItems, blockCacheInitialItems),
peers: newPeerSet(),
blockchain: chain,
lightchain: lightchain,
dropPeer: dropPeer,
headerProcCh: make(chan *headerTask, 1),
quitCh: make(chan struct{}),
@ -240,15 +229,13 @@ func (d *Downloader) Progress() ethereum.SyncProgress {
current := uint64(0)
mode := d.getMode()
switch {
case d.blockchain != nil && mode == FullSync:
switch mode {
case FullSync:
current = d.blockchain.CurrentBlock().Number.Uint64()
case d.blockchain != nil && mode == SnapSync:
case SnapSync:
current = d.blockchain.CurrentSnapBlock().Number.Uint64()
case d.lightchain != nil:
current = d.lightchain.CurrentHeader().Number.Uint64()
default:
log.Error("Unknown downloader chain/mode combo", "light", d.lightchain != nil, "full", d.blockchain != nil, "mode", mode)
log.Error("Unknown downloader mode", "mode", mode)
}
progress, pending := d.SnapSyncer.Progress()
@ -402,7 +389,7 @@ func (d *Downloader) syncToHead() (err error) {
if err != nil {
d.mux.Post(FailedEvent{err})
} else {
latest := d.lightchain.CurrentHeader()
latest := d.blockchain.CurrentHeader()
d.mux.Post(DoneEvent{latest})
}
}()
@ -520,7 +507,7 @@ func (d *Downloader) syncToHead() (err error) {
}
// Rewind the ancient store and blockchain if reorg happens.
if origin+1 < frozen {
if err := d.lightchain.SetHead(origin); err != nil {
if err := d.blockchain.SetHead(origin); err != nil {
return err
}
log.Info("Truncated excess ancient chain segment", "oldhead", frozen-1, "newhead", origin)
@ -690,19 +677,17 @@ func (d *Downloader) processHeaders(origin uint64) error {
chunkHashes := hashes[:limit]
// In case of header only syncing, validate the chunk immediately
if mode == SnapSync || mode == LightSync {
if mode == SnapSync {
// Although the received headers might be all valid, a legacy
// PoW/PoA sync must not accept post-merge headers. Make sure
// that any transition is rejected at this point.
if len(chunkHeaders) > 0 {
if n, err := d.lightchain.InsertHeaderChain(chunkHeaders); err != nil {
if n, err := d.blockchain.InsertHeaderChain(chunkHeaders); err != nil {
log.Warn("Invalid header encountered", "number", chunkHeaders[n].Number, "hash", chunkHashes[n], "parent", chunkHeaders[n].ParentHash, "err", err)
return fmt.Errorf("%w: %v", errInvalidChain, err)
}
}
}
// Unless we're doing light chains, schedule the headers for associated content retrieval
if mode == FullSync || mode == SnapSync {
// If we've reached the allowed number of pending headers, stall a bit
for d.queue.PendingBodies() >= maxQueuedHeaders || d.queue.PendingReceipts() >= maxQueuedHeaders {
timer.Reset(time.Second)
@ -717,7 +702,7 @@ func (d *Downloader) processHeaders(origin uint64) error {
if len(inserts) != len(chunkHeaders) {
return fmt.Errorf("%w: stale headers", errBadPeer)
}
}
headers = headers[limit:]
hashes = hashes[limit:]
origin += uint64(limit)
@ -1056,7 +1041,7 @@ func (d *Downloader) readHeaderRange(last *types.Header, count int) []*types.Hea
headers []*types.Header
)
for {
parent := d.lightchain.GetHeaderByHash(current.ParentHash)
parent := d.blockchain.GetHeaderByHash(current.ParentHash)
if parent == nil {
break // The chain is not continuous, or the chain is exhausted
}

24
eth/downloader/downloader_test.go
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@ -76,7 +76,7 @@ func newTesterWithNotification(t *testing.T, success func()) *downloadTester {
chain: chain,
peers: make(map[string]*downloadTesterPeer),
}
tester.downloader = New(db, new(event.TypeMux), tester.chain, nil, tester.dropPeer, success)
tester.downloader = New(db, new(event.TypeMux), tester.chain, tester.dropPeer, success)
return tester
}
@ -384,9 +384,6 @@ func assertOwnChain(t *testing.T, tester *downloadTester, length int) {
t.Helper()
headers, blocks, receipts := length, length, length
if tester.downloader.getMode() == LightSync {
blocks, receipts = 1, 1
}
if hs := int(tester.chain.CurrentHeader().Number.Uint64()) + 1; hs != headers {
t.Fatalf("synchronised headers mismatch: have %v, want %v", hs, headers)
}
@ -400,7 +397,6 @@ func assertOwnChain(t *testing.T, tester *downloadTester, length int) {
func TestCanonicalSynchronisation68Full(t *testing.T) { testCanonSync(t, eth.ETH68, FullSync) }
func TestCanonicalSynchronisation68Snap(t *testing.T) { testCanonSync(t, eth.ETH68, SnapSync) }
func TestCanonicalSynchronisation68Light(t *testing.T) { testCanonSync(t, eth.ETH68, LightSync) }
func testCanonSync(t *testing.T, protocol uint, mode SyncMode) {
success := make(chan struct{})
@ -507,7 +503,6 @@ func testThrottling(t *testing.T, protocol uint, mode SyncMode) {
// Tests that a canceled download wipes all previously accumulated state.
func TestCancel68Full(t *testing.T) { testCancel(t, eth.ETH68, FullSync) }
func TestCancel68Snap(t *testing.T) { testCancel(t, eth.ETH68, SnapSync) }
func TestCancel68Light(t *testing.T) { testCancel(t, eth.ETH68, LightSync) }
func testCancel(t *testing.T, protocol uint, mode SyncMode) {
complete := make(chan struct{})
@ -540,7 +535,6 @@ func testCancel(t *testing.T, protocol uint, mode SyncMode) {
// and not wreak havoc on other nodes in the network.
func TestMultiProtoSynchronisation68Full(t *testing.T) { testMultiProtoSync(t, eth.ETH68, FullSync) }
func TestMultiProtoSynchronisation68Snap(t *testing.T) { testMultiProtoSync(t, eth.ETH68, SnapSync) }
func TestMultiProtoSynchronisation68Light(t *testing.T) { testMultiProtoSync(t, eth.ETH68, LightSync) }
func testMultiProtoSync(t *testing.T, protocol uint, mode SyncMode) {
complete := make(chan struct{})
@ -580,7 +574,6 @@ func testMultiProtoSync(t *testing.T, protocol uint, mode SyncMode) {
// made, and instead the header should be assembled into a whole block in itself.
func TestEmptyShortCircuit68Full(t *testing.T) { testEmptyShortCircuit(t, eth.ETH68, FullSync) }
func TestEmptyShortCircuit68Snap(t *testing.T) { testEmptyShortCircuit(t, eth.ETH68, SnapSync) }
func TestEmptyShortCircuit68Light(t *testing.T) { testEmptyShortCircuit(t, eth.ETH68, LightSync) }
func testEmptyShortCircuit(t *testing.T, protocol uint, mode SyncMode) {
success := make(chan struct{})
@ -619,7 +612,7 @@ func testEmptyShortCircuit(t *testing.T, protocol uint, mode SyncMode) {
// Validate the number of block bodies that should have been requested
bodiesNeeded, receiptsNeeded := 0, 0
for _, block := range chain.blocks[1:] {
if mode != LightSync && (len(block.Transactions()) > 0 || len(block.Uncles()) > 0) {
if len(block.Transactions()) > 0 || len(block.Uncles()) > 0 {
bodiesNeeded++
}
}
@ -696,7 +689,6 @@ func testBeaconSync(t *testing.T, protocol uint, mode SyncMode) {
// and highest block number) is tracked and updated correctly.
func TestSyncProgress68Full(t *testing.T) { testSyncProgress(t, eth.ETH68, FullSync) }
func TestSyncProgress68Snap(t *testing.T) { testSyncProgress(t, eth.ETH68, SnapSync) }
func TestSyncProgress68Light(t *testing.T) { testSyncProgress(t, eth.ETH68, LightSync) }
func testSyncProgress(t *testing.T, protocol uint, mode SyncMode) {
success := make(chan struct{})
@ -734,17 +726,7 @@ func testSyncProgress(t *testing.T, protocol uint, mode SyncMode) {
if err := tester.downloader.BeaconSync(mode, chain.blocks[len(chain.blocks)-1].Header(), nil); err != nil {
t.Fatalf("failed to beacon-sync chain: %v", err)
}
var startingBlock uint64
if mode == LightSync {
// in light-sync mode:
// * the starting block is 0 on the second sync cycle because blocks
// are never downloaded.
// * The current/highest blocks reported in the progress reflect the
// current/highest header.
startingBlock = 0
} else {
startingBlock = uint64(len(chain.blocks)/2 - 1)
}
startingBlock := uint64(len(chain.blocks)/2 - 1)
select {
case <-success:

11
eth/downloader/modes.go
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@ -25,11 +25,10 @@ type SyncMode uint32
const (
FullSync SyncMode = iota // Synchronise the entire blockchain history from full blocks
SnapSync // Download the chain and the state via compact snapshots
LightSync // Download only the headers and terminate afterwards
)
func (mode SyncMode) IsValid() bool {
return mode >= FullSync && mode <= LightSync
return mode == FullSync || mode == SnapSync
}
// String implements the stringer interface.
@ -39,8 +38,6 @@ func (mode SyncMode) String() string {
return "full"
case SnapSync:
return "snap"
case LightSync:
return "light"
default:
return "unknown"
}
@ -52,8 +49,6 @@ func (mode SyncMode) MarshalText() ([]byte, error) {
return []byte("full"), nil
case SnapSync:
return []byte("snap"), nil
case LightSync:
return []byte("light"), nil
default:
return nil, fmt.Errorf("unknown sync mode %d", mode)
}
@ -65,10 +60,8 @@ func (mode *SyncMode) UnmarshalText(text []byte) error {
*mode = FullSync
case "snap":
*mode = SnapSync
case "light":
*mode = LightSync
default:
return fmt.Errorf(`unknown sync mode %q, want "full", "snap" or "light"`, text)
return fmt.Errorf(`unknown sync mode %q, want "full" or "snap"`, text)
}
return nil
}

2
eth/handler.go
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@ -180,7 +180,7 @@ func newHandler(config *handlerConfig) (*handler, error) {
return nil, errors.New("snap sync not supported with snapshots disabled")
}
// Construct the downloader (long sync)
h.downloader = downloader.New(config.Database, h.eventMux, h.chain, nil, h.removePeer, h.enableSyncedFeatures)
h.downloader = downloader.New(config.Database, h.eventMux, h.chain, h.removePeer, h.enableSyncedFeatures)
fetchTx := func(peer string, hashes []common.Hash) error {
p := h.peers.peer(peer)

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