forked from cerc-io/plugeth
eth, les, light: Refactor downloader to use blockchain interface
This commit is contained in:
Nick Johnson
parent
dfd076244d
commit
0550957989
@ -114,20 +114,10 @@ type Downloader struct {
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syncStatsState stateSyncStats
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syncStatsLock sync.RWMutex // Lock protecting the sync stats fields
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lightchain LightChain
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chain BlockChain
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// Callbacks
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hasHeader headerCheckFn // Checks if a header is present in the chain
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hasBlockAndState blockAndStateCheckFn // Checks if a block and associated state is present in the chain
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getHeader headerRetrievalFn // Retrieves a header from the chain
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getBlock blockRetrievalFn // Retrieves a block from the chain
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headHeader headHeaderRetrievalFn // Retrieves the head header from the chain
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headBlock headBlockRetrievalFn // Retrieves the head block from the chain
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headFastBlock headFastBlockRetrievalFn // Retrieves the head fast-sync block from the chain
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commitHeadBlock headBlockCommitterFn // Commits a manually assembled block as the chain head
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getTd tdRetrievalFn // Retrieves the TD of a block from the chain
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insertHeaders headerChainInsertFn // Injects a batch of headers into the chain
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insertBlocks blockChainInsertFn // Injects a batch of blocks into the chain
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insertReceipts receiptChainInsertFn // Injects a batch of blocks and their receipts into the chain
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rollback chainRollbackFn // Removes a batch of recently added chain links
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dropPeer peerDropFn // Drops a peer for misbehaving
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// Status
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@ -163,11 +153,56 @@ type Downloader struct {
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chainInsertHook func([]*fetchResult) // Method to call upon inserting a chain of blocks (possibly in multiple invocations)
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}
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type LightChain interface {
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// HasHeader verifies a header's presence in the local chain.
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HasHeader(common.Hash) bool
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// GetHeaderByHash retrieves a header from the local chain.
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GetHeaderByHash(common.Hash) *types.Header
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// CurrentHeader retrieves the head header from the local chain.
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CurrentHeader() *types.Header
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// GetTdByHash returns the total difficulty of a local block.
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GetTdByHash(common.Hash) *big.Int
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// InsertHeaderChain inserts a batch of headers into the local chain.
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InsertHeaderChain([]*types.Header, int) (int, error)
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// Rollback removes a few recently added elements from the local chain.
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Rollback([]common.Hash)
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}
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type BlockChain interface {
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LightChain
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// HasBlockAndState verifies block and associated states' presence in the local chain.
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HasBlockAndState(common.Hash) bool
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// GetBlockByHash retrieves a block from the local chain.
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GetBlockByHash(common.Hash) *types.Block
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// CurrentBlock retrieves the head block from the local chain.
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CurrentBlock() *types.Block
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// CurrentFastBlock retrieves the head fast block from the local chain.
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CurrentFastBlock() *types.Block
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// FastSyncCommitHead directly commits the head block to a certain entity.
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FastSyncCommitHead(common.Hash) error
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// InsertChain inserts a batch of blocks into the local chain.
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InsertChain(types.Blocks) (int, error)
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// InsertReceiptChain inserts a batch of receipts into the local chain.
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InsertReceiptChain(types.Blocks, []types.Receipts) (int, error)
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}
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// New creates a new downloader to fetch hashes and blocks from remote peers.
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func New(mode SyncMode, stateDb ethdb.Database, mux *event.TypeMux, hasHeader headerCheckFn, hasBlockAndState blockAndStateCheckFn,
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getHeader headerRetrievalFn, getBlock blockRetrievalFn, headHeader headHeaderRetrievalFn, headBlock headBlockRetrievalFn,
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headFastBlock headFastBlockRetrievalFn, commitHeadBlock headBlockCommitterFn, getTd tdRetrievalFn, insertHeaders headerChainInsertFn,
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insertBlocks blockChainInsertFn, insertReceipts receiptChainInsertFn, rollback chainRollbackFn, dropPeer peerDropFn) *Downloader {
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func New(mode SyncMode, stateDb ethdb.Database, mux *event.TypeMux, chain BlockChain, lightchain LightChain, dropPeer peerDropFn) *Downloader {
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if lightchain == nil {
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lightchain = chain
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}
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dl := &Downloader{
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mode: mode,
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@ -177,19 +212,8 @@ func New(mode SyncMode, stateDb ethdb.Database, mux *event.TypeMux, hasHeader he
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stateDB: stateDb,
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rttEstimate: uint64(rttMaxEstimate),
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rttConfidence: uint64(1000000),
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hasHeader: hasHeader,
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hasBlockAndState: hasBlockAndState,
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getHeader: getHeader,
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getBlock: getBlock,
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headHeader: headHeader,
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headBlock: headBlock,
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headFastBlock: headFastBlock,
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commitHeadBlock: commitHeadBlock,
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getTd: getTd,
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insertHeaders: insertHeaders,
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insertBlocks: insertBlocks,
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insertReceipts: insertReceipts,
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rollback: rollback,
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chain: chain,
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lightchain: lightchain,
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dropPeer: dropPeer,
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headerCh: make(chan dataPack, 1),
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bodyCh: make(chan dataPack, 1),
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@ -223,11 +247,11 @@ func (d *Downloader) Progress() ethereum.SyncProgress {
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current := uint64(0)
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switch d.mode {
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case FullSync:
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current = d.headBlock().NumberU64()
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current = d.chain.CurrentBlock().NumberU64()
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case FastSync:
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current = d.headFastBlock().NumberU64()
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current = d.chain.CurrentFastBlock().NumberU64()
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case LightSync:
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current = d.headHeader().Number.Uint64()
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current = d.lightchain.CurrentHeader().Number.Uint64()
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}
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return ethereum.SyncProgress{
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StartingBlock: d.syncStatsChainOrigin,
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@ -572,13 +596,13 @@ func (d *Downloader) fetchHeight(p *peer) (*types.Header, error) {
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// the head links match), we do a binary search to find the common ancestor.
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func (d *Downloader) findAncestor(p *peer, height uint64) (uint64, error) {
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// Figure out the valid ancestor range to prevent rewrite attacks
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floor, ceil := int64(-1), d.headHeader().Number.Uint64()
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floor, ceil := int64(-1), d.lightchain.CurrentHeader().Number.Uint64()
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p.log.Debug("Looking for common ancestor", "local", ceil, "remote", height)
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if d.mode == FullSync {
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ceil = d.headBlock().NumberU64()
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ceil = d.chain.CurrentBlock().NumberU64()
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} else if d.mode == FastSync {
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ceil = d.headFastBlock().NumberU64()
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ceil = d.chain.CurrentFastBlock().NumberU64()
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}
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if ceil >= MaxForkAncestry {
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floor = int64(ceil - MaxForkAncestry)
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@ -638,7 +662,7 @@ func (d *Downloader) findAncestor(p *peer, height uint64) (uint64, error) {
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continue
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}
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// Otherwise check if we already know the header or not
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if (d.mode == FullSync && d.hasBlockAndState(headers[i].Hash())) || (d.mode != FullSync && d.hasHeader(headers[i].Hash())) {
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if (d.mode == FullSync && d.chain.HasBlockAndState(headers[i].Hash())) || (d.mode != FullSync && d.lightchain.HasHeader(headers[i].Hash())) {
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number, hash = headers[i].Number.Uint64(), headers[i].Hash()
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// If every header is known, even future ones, the peer straight out lied about its head
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@ -703,11 +727,11 @@ func (d *Downloader) findAncestor(p *peer, height uint64) (uint64, error) {
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arrived = true
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// Modify the search interval based on the response
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if (d.mode == FullSync && !d.hasBlockAndState(headers[0].Hash())) || (d.mode != FullSync && !d.hasHeader(headers[0].Hash())) {
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if (d.mode == FullSync && !d.chain.HasBlockAndState(headers[0].Hash())) || (d.mode != FullSync && !d.lightchain.HasHeader(headers[0].Hash())) {
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end = check
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break
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}
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header := d.getHeader(headers[0].Hash()) // Independent of sync mode, header surely exists
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header := d.lightchain.GetHeaderByHash(headers[0].Hash()) // Independent of sync mode, header surely exists
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if header.Number.Uint64() != check {
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p.log.Debug("Received non requested header", "number", header.Number, "hash", header.Hash(), "request", check)
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return 0, errBadPeer
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@ -1124,23 +1148,19 @@ func (d *Downloader) processHeaders(origin uint64, td *big.Int) error {
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for i, header := range rollback {
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hashes[i] = header.Hash()
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}
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lastHeader, lastFastBlock, lastBlock := d.headHeader().Number, common.Big0, common.Big0
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if d.headFastBlock != nil {
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lastFastBlock = d.headFastBlock().Number()
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lastHeader, lastFastBlock, lastBlock := d.lightchain.CurrentHeader().Number, common.Big0, common.Big0
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if d.mode != LightSync {
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lastFastBlock = d.chain.CurrentFastBlock().Number()
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lastBlock = d.chain.CurrentBlock().Number()
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}
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if d.headBlock != nil {
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lastBlock = d.headBlock().Number()
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}
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d.rollback(hashes)
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d.lightchain.Rollback(hashes)
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curFastBlock, curBlock := common.Big0, common.Big0
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if d.headFastBlock != nil {
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curFastBlock = d.headFastBlock().Number()
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}
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if d.headBlock != nil {
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curBlock = d.headBlock().Number()
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if d.mode != LightSync {
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curFastBlock = d.chain.CurrentFastBlock().Number()
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curBlock = d.chain.CurrentBlock().Number()
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}
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log.Warn("Rolled back headers", "count", len(hashes),
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"header", fmt.Sprintf("%d->%d", lastHeader, d.headHeader().Number),
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"header", fmt.Sprintf("%d->%d", lastHeader, d.lightchain.CurrentHeader().Number),
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"fast", fmt.Sprintf("%d->%d", lastFastBlock, curFastBlock),
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"block", fmt.Sprintf("%d->%d", lastBlock, curBlock))
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@ -1190,7 +1210,7 @@ func (d *Downloader) processHeaders(origin uint64, td *big.Int) error {
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// L: Request new headers up from 11 (R's TD was higher, it must have something)
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// R: Nothing to give
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if d.mode != LightSync {
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if !gotHeaders && td.Cmp(d.getTd(d.headBlock().Hash())) > 0 {
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if !gotHeaders && td.Cmp(d.chain.GetTdByHash(d.chain.CurrentBlock().Hash())) > 0 {
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return errStallingPeer
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}
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}
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@ -1202,7 +1222,7 @@ func (d *Downloader) processHeaders(origin uint64, td *big.Int) error {
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// queued for processing when the header download completes. However, as long as the
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// peer gave us something useful, we're already happy/progressed (above check).
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if d.mode == FastSync || d.mode == LightSync {
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if td.Cmp(d.getTd(d.headHeader().Hash())) > 0 {
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if td.Cmp(d.lightchain.GetTdByHash(d.lightchain.CurrentHeader().Hash())) > 0 {
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return errStallingPeer
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}
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}
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@ -1232,7 +1252,7 @@ func (d *Downloader) processHeaders(origin uint64, td *big.Int) error {
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// Collect the yet unknown headers to mark them as uncertain
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unknown := make([]*types.Header, 0, len(headers))
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for _, header := range chunk {
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if !d.hasHeader(header.Hash()) {
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if !d.lightchain.HasHeader(header.Hash()) {
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unknown = append(unknown, header)
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}
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}
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@ -1241,7 +1261,7 @@ func (d *Downloader) processHeaders(origin uint64, td *big.Int) error {
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if chunk[len(chunk)-1].Number.Uint64()+uint64(fsHeaderForceVerify) > pivot {
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frequency = 1
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}
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if n, err := d.insertHeaders(chunk, frequency); err != nil {
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if n, err := d.chain.InsertHeaderChain(chunk, frequency); err != nil {
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// If some headers were inserted, add them too to the rollback list
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if n > 0 {
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rollback = append(rollback, chunk[:n]...)
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@ -1328,7 +1348,7 @@ func (d *Downloader) importBlockResults(results []*fetchResult) error {
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for i, result := range results[:items] {
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blocks[i] = types.NewBlockWithHeader(result.Header).WithBody(result.Transactions, result.Uncles)
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}
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if index, err := d.insertBlocks(blocks); err != nil {
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if index, err := d.chain.InsertChain(blocks); err != nil {
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log.Debug("Downloaded item processing failed", "number", results[index].Header.Number, "hash", results[index].Header.Hash(), "err", err)
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return errInvalidChain
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}
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@ -1368,6 +1388,7 @@ func (d *Downloader) processFastSyncContent(latest *types.Header) error {
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stateSync.Cancel()
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if err := d.commitPivotBlock(P); err != nil {
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return err
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}
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}
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if err := d.importBlockResults(afterP); err != nil {
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@ -1416,7 +1437,7 @@ func (d *Downloader) commitFastSyncData(results []*fetchResult, stateSync *state
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blocks[i] = types.NewBlockWithHeader(result.Header).WithBody(result.Transactions, result.Uncles)
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receipts[i] = result.Receipts
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}
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if index, err := d.insertReceipts(blocks, receipts); err != nil {
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if index, err := d.chain.InsertReceiptChain(blocks, receipts); err != nil {
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log.Debug("Downloaded item processing failed", "number", results[index].Header.Number, "hash", results[index].Header.Hash(), "err", err)
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return errInvalidChain
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}
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@ -1434,10 +1455,10 @@ func (d *Downloader) commitPivotBlock(result *fetchResult) error {
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return err
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}
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log.Debug("Committing fast sync pivot as new head", "number", b.Number(), "hash", b.Hash())
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if _, err := d.insertReceipts([]*types.Block{b}, []types.Receipts{result.Receipts}); err != nil {
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if _, err := d.chain.InsertReceiptChain([]*types.Block{b}, []types.Receipts{result.Receipts}); err != nil {
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return err
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}
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return d.commitHeadBlock(b.Hash())
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return d.chain.FastSyncCommitHead(b.Hash())
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}
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// DeliverHeaders injects a new batch of block headers received from a remote
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@ -96,9 +96,7 @@ func newTester() *downloadTester {
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tester.stateDb, _ = ethdb.NewMemDatabase()
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tester.stateDb.Put(genesis.Root().Bytes(), []byte{0x00})
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tester.downloader = New(FullSync, tester.stateDb, new(event.TypeMux), tester.hasHeader, tester.hasBlock, tester.getHeader,
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tester.getBlock, tester.headHeader, tester.headBlock, tester.headFastBlock, tester.commitHeadBlock, tester.getTd,
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tester.insertHeaders, tester.insertBlocks, tester.insertReceipts, tester.rollback, tester.dropPeer)
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tester.downloader = New(FullSync, tester.stateDb, new(event.TypeMux), tester, nil, tester.dropPeer)
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return tester
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}
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@ -218,14 +216,14 @@ func (dl *downloadTester) sync(id string, td *big.Int, mode SyncMode) error {
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return err
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}
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// hasHeader checks if a header is present in the testers canonical chain.
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func (dl *downloadTester) hasHeader(hash common.Hash) bool {
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return dl.getHeader(hash) != nil
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// HasHeader checks if a header is present in the testers canonical chain.
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func (dl *downloadTester) HasHeader(hash common.Hash) bool {
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return dl.GetHeaderByHash(hash) != nil
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}
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// hasBlock checks if a block and associated state is present in the testers canonical chain.
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func (dl *downloadTester) hasBlock(hash common.Hash) bool {
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block := dl.getBlock(hash)
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// HasBlockAndState checks if a block and associated state is present in the testers canonical chain.
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func (dl *downloadTester) HasBlockAndState(hash common.Hash) bool {
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block := dl.GetBlockByHash(hash)
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if block == nil {
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return false
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}
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@ -233,24 +231,24 @@ func (dl *downloadTester) hasBlock(hash common.Hash) bool {
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return err == nil
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}
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// getHeader retrieves a header from the testers canonical chain.
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func (dl *downloadTester) getHeader(hash common.Hash) *types.Header {
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// GetHeader retrieves a header from the testers canonical chain.
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func (dl *downloadTester) GetHeaderByHash(hash common.Hash) *types.Header {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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return dl.ownHeaders[hash]
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}
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// getBlock retrieves a block from the testers canonical chain.
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func (dl *downloadTester) getBlock(hash common.Hash) *types.Block {
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// GetBlock retrieves a block from the testers canonical chain.
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func (dl *downloadTester) GetBlockByHash(hash common.Hash) *types.Block {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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return dl.ownBlocks[hash]
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}
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// headHeader retrieves the current head header from the canonical chain.
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func (dl *downloadTester) headHeader() *types.Header {
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// CurrentHeader retrieves the current head header from the canonical chain.
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func (dl *downloadTester) CurrentHeader() *types.Header {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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@ -262,8 +260,8 @@ func (dl *downloadTester) headHeader() *types.Header {
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return dl.genesis.Header()
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}
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// headBlock retrieves the current head block from the canonical chain.
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func (dl *downloadTester) headBlock() *types.Block {
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// CurrentBlock retrieves the current head block from the canonical chain.
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func (dl *downloadTester) CurrentBlock() *types.Block {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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@ -277,8 +275,8 @@ func (dl *downloadTester) headBlock() *types.Block {
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return dl.genesis
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}
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// headFastBlock retrieves the current head fast-sync block from the canonical chain.
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func (dl *downloadTester) headFastBlock() *types.Block {
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// CurrentFastBlock retrieves the current head fast-sync block from the canonical chain.
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func (dl *downloadTester) CurrentFastBlock() *types.Block {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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@ -290,26 +288,26 @@ func (dl *downloadTester) headFastBlock() *types.Block {
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return dl.genesis
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}
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// commitHeadBlock manually sets the head block to a given hash.
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func (dl *downloadTester) commitHeadBlock(hash common.Hash) error {
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// FastSynccommitHead manually sets the head block to a given hash.
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func (dl *downloadTester) FastSyncCommitHead(hash common.Hash) error {
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// For now only check that the state trie is correct
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if block := dl.getBlock(hash); block != nil {
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if block := dl.GetBlockByHash(hash); block != nil {
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_, err := trie.NewSecure(block.Root(), dl.stateDb, 0)
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return err
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}
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return fmt.Errorf("non existent block: %x", hash[:4])
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}
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// getTd retrieves the block's total difficulty from the canonical chain.
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func (dl *downloadTester) getTd(hash common.Hash) *big.Int {
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// GetTdByHash retrieves the block's total difficulty from the canonical chain.
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func (dl *downloadTester) GetTdByHash(hash common.Hash) *big.Int {
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dl.lock.RLock()
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defer dl.lock.RUnlock()
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return dl.ownChainTd[hash]
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}
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// insertHeaders injects a new batch of headers into the simulated chain.
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func (dl *downloadTester) insertHeaders(headers []*types.Header, checkFreq int) (int, error) {
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// InsertHeaderChain injects a new batch of headers into the simulated chain.
|
||||
func (dl *downloadTester) InsertHeaderChain(headers []*types.Header, checkFreq int) (int, error) {
|
||||
dl.lock.Lock()
|
||||
defer dl.lock.Unlock()
|
||||
|
||||
@ -337,8 +335,8 @@ func (dl *downloadTester) insertHeaders(headers []*types.Header, checkFreq int)
|
||||
return len(headers), nil
|
||||
}
|
||||
|
||||
// insertBlocks injects a new batch of blocks into the simulated chain.
|
||||
func (dl *downloadTester) insertBlocks(blocks types.Blocks) (int, error) {
|
||||
// InsertChain injects a new batch of blocks into the simulated chain.
|
||||
func (dl *downloadTester) InsertChain(blocks types.Blocks) (int, error) {
|
||||
dl.lock.Lock()
|
||||
defer dl.lock.Unlock()
|
||||
|
||||
@ -359,8 +357,8 @@ func (dl *downloadTester) insertBlocks(blocks types.Blocks) (int, error) {
|
||||
return len(blocks), nil
|
||||
}
|
||||
|
||||
// insertReceipts injects a new batch of receipts into the simulated chain.
|
||||
func (dl *downloadTester) insertReceipts(blocks types.Blocks, receipts []types.Receipts) (int, error) {
|
||||
// InsertReceiptChain injects a new batch of receipts into the simulated chain.
|
||||
func (dl *downloadTester) InsertReceiptChain(blocks types.Blocks, receipts []types.Receipts) (int, error) {
|
||||
dl.lock.Lock()
|
||||
defer dl.lock.Unlock()
|
||||
|
||||
@ -377,8 +375,8 @@ func (dl *downloadTester) insertReceipts(blocks types.Blocks, receipts []types.R
|
||||
return len(blocks), nil
|
||||
}
|
||||
|
||||
// rollback removes some recently added elements from the chain.
|
||||
func (dl *downloadTester) rollback(hashes []common.Hash) {
|
||||
// Rollback removes some recently added elements from the chain.
|
||||
func (dl *downloadTester) Rollback(hashes []common.Hash) {
|
||||
dl.lock.Lock()
|
||||
defer dl.lock.Unlock()
|
||||
|
||||
@ -1212,7 +1210,7 @@ func testInvalidHeaderRollback(t *testing.T, protocol int, mode SyncMode) {
|
||||
if err := tester.sync("fast-attack", nil, mode); err == nil {
|
||||
t.Fatalf("succeeded fast attacker synchronisation")
|
||||
}
|
||||
if head := tester.headHeader().Number.Int64(); int(head) > MaxHeaderFetch {
|
||||
if head := tester.CurrentHeader().Number.Int64(); int(head) > MaxHeaderFetch {
|
||||
t.Errorf("rollback head mismatch: have %v, want at most %v", head, MaxHeaderFetch)
|
||||
}
|
||||
// Attempt to sync with an attacker that feeds junk during the block import phase.
|
||||
@ -1226,11 +1224,11 @@ func testInvalidHeaderRollback(t *testing.T, protocol int, mode SyncMode) {
|
||||
if err := tester.sync("block-attack", nil, mode); err == nil {
|
||||
t.Fatalf("succeeded block attacker synchronisation")
|
||||
}
|
||||
if head := tester.headHeader().Number.Int64(); int(head) > 2*fsHeaderSafetyNet+MaxHeaderFetch {
|
||||
if head := tester.CurrentHeader().Number.Int64(); int(head) > 2*fsHeaderSafetyNet+MaxHeaderFetch {
|
||||
t.Errorf("rollback head mismatch: have %v, want at most %v", head, 2*fsHeaderSafetyNet+MaxHeaderFetch)
|
||||
}
|
||||
if mode == FastSync {
|
||||
if head := tester.headBlock().NumberU64(); head != 0 {
|
||||
if head := tester.CurrentBlock().NumberU64(); head != 0 {
|
||||
t.Errorf("fast sync pivot block #%d not rolled back", head)
|
||||
}
|
||||
}
|
||||
@ -1251,11 +1249,11 @@ func testInvalidHeaderRollback(t *testing.T, protocol int, mode SyncMode) {
|
||||
if err := tester.sync("withhold-attack", nil, mode); err == nil {
|
||||
t.Fatalf("succeeded withholding attacker synchronisation")
|
||||
}
|
||||
if head := tester.headHeader().Number.Int64(); int(head) > 2*fsHeaderSafetyNet+MaxHeaderFetch {
|
||||
if head := tester.CurrentHeader().Number.Int64(); int(head) > 2*fsHeaderSafetyNet+MaxHeaderFetch {
|
||||
t.Errorf("rollback head mismatch: have %v, want at most %v", head, 2*fsHeaderSafetyNet+MaxHeaderFetch)
|
||||
}
|
||||
if mode == FastSync {
|
||||
if head := tester.headBlock().NumberU64(); head != 0 {
|
||||
if head := tester.CurrentBlock().NumberU64(); head != 0 {
|
||||
t.Errorf("fast sync pivot block #%d not rolled back", head)
|
||||
}
|
||||
}
|
||||
|
||||
@ -18,51 +18,10 @@ package downloader
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math/big"
|
||||
|
||||
"github.com/ethereum/go-ethereum/common"
|
||||
"github.com/ethereum/go-ethereum/core/types"
|
||||
)
|
||||
|
||||
// headerCheckFn is a callback type for verifying a header's presence in the local chain.
|
||||
type headerCheckFn func(common.Hash) bool
|
||||
|
||||
// blockAndStateCheckFn is a callback type for verifying block and associated states' presence in the local chain.
|
||||
type blockAndStateCheckFn func(common.Hash) bool
|
||||
|
||||
// headerRetrievalFn is a callback type for retrieving a header from the local chain.
|
||||
type headerRetrievalFn func(common.Hash) *types.Header
|
||||
|
||||
// blockRetrievalFn is a callback type for retrieving a block from the local chain.
|
||||
type blockRetrievalFn func(common.Hash) *types.Block
|
||||
|
||||
// headHeaderRetrievalFn is a callback type for retrieving the head header from the local chain.
|
||||
type headHeaderRetrievalFn func() *types.Header
|
||||
|
||||
// headBlockRetrievalFn is a callback type for retrieving the head block from the local chain.
|
||||
type headBlockRetrievalFn func() *types.Block
|
||||
|
||||
// headFastBlockRetrievalFn is a callback type for retrieving the head fast block from the local chain.
|
||||
type headFastBlockRetrievalFn func() *types.Block
|
||||
|
||||
// headBlockCommitterFn is a callback for directly committing the head block to a certain entity.
|
||||
type headBlockCommitterFn func(common.Hash) error
|
||||
|
||||
// tdRetrievalFn is a callback type for retrieving the total difficulty of a local block.
|
||||
type tdRetrievalFn func(common.Hash) *big.Int
|
||||
|
||||
// headerChainInsertFn is a callback type to insert a batch of headers into the local chain.
|
||||
type headerChainInsertFn func([]*types.Header, int) (int, error)
|
||||
|
||||
// blockChainInsertFn is a callback type to insert a batch of blocks into the local chain.
|
||||
type blockChainInsertFn func(types.Blocks) (int, error)
|
||||
|
||||
// receiptChainInsertFn is a callback type to insert a batch of receipts into the local chain.
|
||||
type receiptChainInsertFn func(types.Blocks, []types.Receipts) (int, error)
|
||||
|
||||
// chainRollbackFn is a callback type to remove a few recently added elements from the local chain.
|
||||
type chainRollbackFn func([]common.Hash)
|
||||
|
||||
// peerDropFn is a callback type for dropping a peer detected as malicious.
|
||||
type peerDropFn func(id string)
|
||||
|
||||
|
||||
@ -157,10 +157,7 @@ func NewProtocolManager(config *params.ChainConfig, mode downloader.SyncMode, ne
|
||||
return nil, errIncompatibleConfig
|
||||
}
|
||||
// Construct the different synchronisation mechanisms
|
||||
manager.downloader = downloader.New(mode, chaindb, manager.eventMux, blockchain.HasHeader, blockchain.HasBlockAndState, blockchain.GetHeaderByHash,
|
||||
blockchain.GetBlockByHash, blockchain.CurrentHeader, blockchain.CurrentBlock, blockchain.CurrentFastBlock, blockchain.FastSyncCommitHead,
|
||||
blockchain.GetTdByHash, blockchain.InsertHeaderChain, manager.blockchain.InsertChain, blockchain.InsertReceiptChain, blockchain.Rollback,
|
||||
manager.removePeer)
|
||||
manager.downloader = downloader.New(mode, chaindb, manager.eventMux, blockchain, nil, manager.removePeer)
|
||||
|
||||
validator := func(header *types.Header) error {
|
||||
return engine.VerifyHeader(blockchain, header, true)
|
||||
|
||||
@ -206,9 +206,7 @@ func NewProtocolManager(chainConfig *params.ChainConfig, lightSync bool, network
|
||||
}
|
||||
|
||||
if lightSync {
|
||||
manager.downloader = downloader.New(downloader.LightSync, chainDb, manager.eventMux, blockchain.HasHeader, nil, blockchain.GetHeaderByHash,
|
||||
nil, blockchain.CurrentHeader, nil, nil, nil, blockchain.GetTdByHash,
|
||||
blockchain.InsertHeaderChain, nil, nil, blockchain.Rollback, removePeer)
|
||||
manager.downloader = downloader.New(downloader.LightSync, chainDb, manager.eventMux, nil, blockchain, removePeer)
|
||||
manager.peers.notify((*downloaderPeerNotify)(manager))
|
||||
manager.fetcher = newLightFetcher(manager)
|
||||
}
|
||||
|
||||
@ -389,6 +389,21 @@ func (self *LightChain) CurrentHeader() *types.Header {
|
||||
return self.hc.CurrentHeader()
|
||||
}
|
||||
|
||||
// CurrentBlock exists for interface compatibility and always returns nil
|
||||
func (self *LightChain) CurrentBlock() *types.Block {
|
||||
return nil
|
||||
}
|
||||
|
||||
// CurrentFastBlock exists for interface compatibility and always returns nil
|
||||
func (self *LightChain) CurrentFastBlock() *types.Block {
|
||||
return nil
|
||||
}
|
||||
|
||||
// FastSyncCommitHead exists for interface compatibility and does nothing
|
||||
func (self *LightChain) FastSyncCommitHead(h common.Hash) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
// GetTd retrieves a block's total difficulty in the canonical chain from the
|
||||
// database by hash and number, caching it if found.
|
||||
func (self *LightChain) GetTd(hash common.Hash, number uint64) *big.Int {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user