diff --git a/core/block_processor.go b/core/block_processor.go
index a07d79bcf9064fc733c914bf9e1c3e2409b73cb8..5dadd2a27a25e8950d00a90cd442410be185b24c 100644
--- a/core/block_processor.go
+++ b/core/block_processor.go
@@ -369,13 +369,26 @@ func (sm *BlockProcessor) GetLogs(block *types.Block) (logs vm.Logs, err error)
return logs, nil
}
+// ValidateHeader verifies the validity of a header, relying on the database and
+// POW behind the block processor.
+func (sm *BlockProcessor) ValidateHeader(header *types.Header, checkPow, uncle bool) error {
+ // Short circuit if the header's already known or its parent missing
+ if sm.bc.HasHeader(header.Hash()) {
+ return nil
+ }
+ if parent := sm.bc.GetHeader(header.ParentHash); parent == nil {
+ return ParentError(header.ParentHash)
+ } else {
+ return ValidateHeader(sm.Pow, header, parent, checkPow, uncle)
+ }
+}
+
// See YP section 4.3.4. "Block Header Validity"
// Validates a header. Returns an error if the header is invalid.
func ValidateHeader(pow pow.PoW, header *types.Header, parent *types.Header, checkPow, uncle bool) error {
if big.NewInt(int64(len(header.Extra))).Cmp(params.MaximumExtraDataSize) == 1 {
return fmt.Errorf("Header extra data too long (%d)", len(header.Extra))
}
-
if uncle {
if header.Time.Cmp(common.MaxBig) == 1 {
return BlockTSTooBigErr
diff --git a/core/blockchain.go b/core/blockchain.go
index 7bfe13a11b0f478e2f2f7d4f1813d4253564a422..48c935eacdc15d7f330f145b11d50f293faa377c 100644
--- a/core/blockchain.go
+++ b/core/blockchain.go
@@ -67,9 +67,9 @@ type BlockChain struct {
chainmu sync.RWMutex
tsmu sync.RWMutex
- td *big.Int
- currentBlock *types.Block
- currentGasLimit *big.Int
+ checkpoint int // checkpoint counts towards the new checkpoint
+ currentHeader *types.Header // Current head of the header chain (may be above the block chain!)
+ currentBlock *types.Block // Current head of the block chain
headerCache *lru.Cache // Cache for the most recent block headers
bodyCache *lru.Cache // Cache for the most recent block bodies
@@ -120,20 +120,15 @@ func NewBlockChain(chainDb ethdb.Database, pow pow.PoW, mux *event.TypeMux) (*Bl
}
glog.V(logger.Info).Infoln("WARNING: Wrote default ethereum genesis block")
}
- if err := bc.setLastState(); err != nil {
+ if err := bc.loadLastState(); err != nil {
return nil, err
}
// Check the current state of the block hashes and make sure that we do not have any of the bad blocks in our chain
for hash, _ := range BadHashes {
- if block := bc.GetBlock(hash); block != nil {
- glog.V(logger.Error).Infof("Found bad hash. Reorganising chain to state %x\n", block.ParentHash().Bytes()[:4])
- block = bc.GetBlock(block.ParentHash())
- if block == nil {
- glog.Fatal("Unable to complete. Parent block not found. Corrupted DB?")
- }
- bc.SetHead(block)
-
- glog.V(logger.Error).Infoln("Chain reorg was successfull. Resuming normal operation")
+ if header := bc.GetHeader(hash); header != nil {
+ glog.V(logger.Error).Infof("Found bad hash, rewinding chain to block #%d [%x…]", header.Number, header.ParentHash[:4])
+ bc.SetHead(header.Number.Uint64() - 1)
+ glog.V(logger.Error).Infoln("Chain rewind was successful, resuming normal operation")
}
}
// Take ownership of this particular state
@@ -141,46 +136,104 @@ func NewBlockChain(chainDb ethdb.Database, pow pow.PoW, mux *event.TypeMux) (*Bl
return bc, nil
}
-func (bc *BlockChain) SetHead(head *types.Block) {
+// loadLastState loads the last known chain state from the database. This method
+// assumes that the chain manager mutex is held.
+func (self *BlockChain) loadLastState() error {
+ // Restore the last known head block
+ head := GetHeadBlockHash(self.chainDb)
+ if head == (common.Hash{}) {
+ // Corrupt or empty database, init from scratch
+ self.Reset()
+ } else {
+ if block := self.GetBlock(head); block != nil {
+ // Block found, set as the current head
+ self.currentBlock = block
+ } else {
+ // Corrupt or empty database, init from scratch
+ self.Reset()
+ }
+ }
+ // Restore the last known head header
+ self.currentHeader = self.currentBlock.Header()
+ if head := GetHeadHeaderHash(self.chainDb); head != (common.Hash{}) {
+ if header := self.GetHeader(head); header != nil {
+ self.currentHeader = header
+ }
+ }
+ // Issue a status log and return
+ headerTd := self.GetTd(self.currentHeader.Hash())
+ blockTd := self.GetTd(self.currentBlock.Hash())
+
+ glog.V(logger.Info).Infof("Last header: #%d [%x…] TD=%v", self.currentHeader.Number, self.currentHeader.Hash(), headerTd)
+ glog.V(logger.Info).Infof("Last block: #%d [%x…] TD=%v", self.currentBlock.Number(), self.currentBlock.Hash(), blockTd)
+
+ return nil
+}
+
+// SetHead rewind the local chain to a new head entity. In the case of headers,
+// everything above the new head will be deleted and the new one set. In the case
+// of blocks though, the head may be further rewound if block bodies are missing
+// (non-archive nodes after a fast sync).
+func (bc *BlockChain) SetHead(head uint64) {
bc.mu.Lock()
defer bc.mu.Unlock()
- for block := bc.currentBlock; block != nil && block.Hash() != head.Hash(); block = bc.GetBlock(block.ParentHash()) {
- DeleteBlock(bc.chainDb, block.Hash())
+ // Delete everything from the current header head (is above block head)
+ for i := bc.currentHeader.Number.Uint64(); i > head; i-- {
+ if hash := GetCanonicalHash(bc.chainDb, i); hash != (common.Hash{}) {
+ DeleteCanonicalHash(bc.chainDb, i)
+ DeleteHeader(bc.chainDb, hash)
+ DeleteBody(bc.chainDb, hash)
+ DeleteTd(bc.chainDb, hash)
+ }
+ }
+ bc.currentHeader = GetHeader(bc.chainDb, GetCanonicalHash(bc.chainDb, head))
+
+ // Rewind the block chain until a whole block is found
+ for bc.GetBlockByNumber(head) == nil {
+ head--
}
+ bc.currentBlock = bc.GetBlockByNumber(head)
+
+ // Clear out any stale content from the caches
bc.headerCache.Purge()
bc.bodyCache.Purge()
bc.bodyRLPCache.Purge()
bc.blockCache.Purge()
bc.futureBlocks.Purge()
- bc.currentBlock = head
- bc.setTotalDifficulty(bc.GetTd(head.Hash()))
- bc.insert(head)
- bc.setLastState()
+ // Update all computed fields to the new head
+ bc.insert(bc.currentBlock)
+ bc.loadLastState()
}
-func (self *BlockChain) Td() *big.Int {
+func (self *BlockChain) GasLimit() *big.Int {
self.mu.RLock()
defer self.mu.RUnlock()
- return new(big.Int).Set(self.td)
+ return self.currentBlock.GasLimit()
}
-func (self *BlockChain) GasLimit() *big.Int {
+func (self *BlockChain) LastBlockHash() common.Hash {
self.mu.RLock()
defer self.mu.RUnlock()
- return self.currentBlock.GasLimit()
+ return self.currentBlock.Hash()
}
-func (self *BlockChain) LastBlockHash() common.Hash {
+// CurrentHeader retrieves the current head header of the canonical chain. The
+// header is retrieved from the chain manager's internal cache, involving no
+// database operations.
+func (self *BlockChain) CurrentHeader() *types.Header {
self.mu.RLock()
defer self.mu.RUnlock()
- return self.currentBlock.Hash()
+ return self.currentHeader
}
+// CurrentBlock retrieves the current head block of the canonical chain. The
+// block is retrieved from the chain manager's internal cache, involving no
+// database operations.
func (self *BlockChain) CurrentBlock() *types.Block {
self.mu.RLock()
defer self.mu.RUnlock()
@@ -192,7 +245,7 @@ func (self *BlockChain) Status() (td *big.Int, currentBlock common.Hash, genesis
self.mu.RLock()
defer self.mu.RUnlock()
- return new(big.Int).Set(self.td), self.currentBlock.Hash(), self.genesisBlock.Hash()
+ return self.GetTd(self.currentBlock.Hash()), self.currentBlock.Hash(), self.genesisBlock.Hash()
}
func (self *BlockChain) SetProcessor(proc types.BlockProcessor) {
@@ -203,26 +256,6 @@ func (self *BlockChain) State() (*state.StateDB, error) {
return state.New(self.CurrentBlock().Root(), self.chainDb)
}
-func (bc *BlockChain) setLastState() error {
- head := GetHeadBlockHash(bc.chainDb)
- if head != (common.Hash{}) {
- block := bc.GetBlock(head)
- if block != nil {
- bc.currentBlock = block
- }
- } else {
- bc.Reset()
- }
- bc.td = bc.GetTd(bc.currentBlock.Hash())
- bc.currentGasLimit = CalcGasLimit(bc.currentBlock)
-
- if glog.V(logger.Info) {
- glog.Infof("Last block (#%v) %x TD=%v\n", bc.currentBlock.Number(), bc.currentBlock.Hash(), bc.td)
- }
-
- return nil
-}
-
// Reset purges the entire blockchain, restoring it to its genesis state.
func (bc *BlockChain) Reset() {
bc.ResetWithGenesisBlock(bc.genesisBlock)
@@ -238,6 +271,9 @@ func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) {
for block := bc.currentBlock; block != nil; block = bc.GetBlock(block.ParentHash()) {
DeleteBlock(bc.chainDb, block.Hash())
}
+ for header := bc.currentHeader; header != nil; header = bc.GetHeader(header.ParentHash) {
+ DeleteBlock(bc.chainDb, header.Hash())
+ }
bc.headerCache.Purge()
bc.bodyCache.Purge()
bc.bodyRLPCache.Purge()
@@ -254,7 +290,7 @@ func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) {
bc.genesisBlock = genesis
bc.insert(bc.genesisBlock)
bc.currentBlock = bc.genesisBlock
- bc.setTotalDifficulty(genesis.Difficulty())
+ bc.currentHeader = bc.genesisBlock.Header()
}
// Export writes the active chain to the given writer.
@@ -290,17 +326,26 @@ func (self *BlockChain) ExportN(w io.Writer, first uint64, last uint64) error {
return nil
}
-// insert injects a block into the current chain block chain. Note, this function
-// assumes that the `mu` mutex is held!
+// insert injects a new head block into the current block chain. This method
+// assumes that the block is indeed a true head. It will also reset the head
+// header to this very same block to prevent the headers from diverging on a
+// different header chain.
+//
+// Note, this function assumes that the `mu` mutex is held!
func (bc *BlockChain) insert(block *types.Block) {
// Add the block to the canonical chain number scheme and mark as the head
if err := WriteCanonicalHash(bc.chainDb, block.Hash(), block.NumberU64()); err != nil {
glog.Fatalf("failed to insert block number: %v", err)
}
if err := WriteHeadBlockHash(bc.chainDb, block.Hash()); err != nil {
- glog.Fatalf("failed to insert block number: %v", err)
+ glog.Fatalf("failed to insert head block hash: %v", err)
}
+ if err := WriteHeadHeaderHash(bc.chainDb, block.Hash()); err != nil {
+ glog.Fatalf("failed to insert head header hash: %v", err)
+ }
+ // Update the internal state with the head block
bc.currentBlock = block
+ bc.currentHeader = block.Header()
}
// Accessors
@@ -456,19 +501,15 @@ func (self *BlockChain) GetBlocksFromHash(hash common.Hash, n int) (blocks []*ty
return
}
-func (self *BlockChain) GetUnclesInChain(block *types.Block, length int) (uncles []*types.Header) {
+// GetUnclesInChain retrieves all the uncles from a given block backwards until
+// a specific distance is reached.
+func (self *BlockChain) GetUnclesInChain(block *types.Block, length int) []*types.Header {
+ uncles := []*types.Header{}
for i := 0; block != nil && i < length; i++ {
uncles = append(uncles, block.Uncles()...)
block = self.GetBlock(block.ParentHash())
}
-
- return
-}
-
-// setTotalDifficulty updates the TD of the chain manager. Note, this function
-// assumes that the `mu` mutex is held!
-func (bc *BlockChain) setTotalDifficulty(td *big.Int) {
- bc.td = new(big.Int).Set(td)
+ return uncles
}
func (bc *BlockChain) Stop() {
@@ -504,6 +545,135 @@ const (
SideStatTy
)
+// writeHeader writes a header into the local chain, given that its parent is
+// already known. If the total difficulty of the newly inserted header becomes
+// greater than the old known TD, the canonical chain is re-routed.
+//
+// Note: This method is not concurrent-safe with inserting blocks simultaneously
+// into the chain, as side effects caused by reorganizations cannot be emulated
+// without the real blocks. Hence, writing headers directly should only be done
+// in two scenarios: pure-header mode of operation (light clients), or properly
+// separated header/block phases (non-archive clients).
+func (self *BlockChain) writeHeader(header *types.Header) error {
+ self.wg.Add(1)
+ defer self.wg.Done()
+
+ // Calculate the total difficulty of the header
+ ptd := self.GetTd(header.ParentHash)
+ if ptd == nil {
+ return ParentError(header.ParentHash)
+ }
+ td := new(big.Int).Add(header.Difficulty, ptd)
+
+ // Make sure no inconsistent state is leaked during insertion
+ self.mu.Lock()
+ defer self.mu.Unlock()
+
+ // If the total difficulty is higher than our known, add it to the canonical chain
+ if td.Cmp(self.GetTd(self.currentHeader.Hash())) > 0 {
+ // Delete any canonical number assignments above the new head
+ for i := header.Number.Uint64() + 1; GetCanonicalHash(self.chainDb, i) != (common.Hash{}); i++ {
+ DeleteCanonicalHash(self.chainDb, i)
+ }
+ // Overwrite any stale canonical number assignments
+ head := self.GetHeader(header.ParentHash)
+ for GetCanonicalHash(self.chainDb, head.Number.Uint64()) != head.Hash() {
+ WriteCanonicalHash(self.chainDb, head.Hash(), head.Number.Uint64())
+ head = self.GetHeader(head.ParentHash)
+ }
+ // Extend the canonical chain with the new header
+ if err := WriteCanonicalHash(self.chainDb, header.Hash(), header.Number.Uint64()); err != nil {
+ glog.Fatalf("failed to insert header number: %v", err)
+ }
+ if err := WriteHeadHeaderHash(self.chainDb, header.Hash()); err != nil {
+ glog.Fatalf("failed to insert head header hash: %v", err)
+ }
+ self.currentHeader = types.CopyHeader(header)
+ }
+ // Irrelevant of the canonical status, write the header itself to the database
+ if err := WriteTd(self.chainDb, header.Hash(), td); err != nil {
+ glog.Fatalf("failed to write header total difficulty: %v", err)
+ }
+ if err := WriteHeader(self.chainDb, header); err != nil {
+ glog.Fatalf("filed to write header contents: %v", err)
+ }
+ return nil
+}
+
+// InsertHeaderChain will attempt to insert the given header chain in to the
+// local chain, possibly creating a dork. If an error is returned, it will
+// return the index number of the failing header as well an error describing
+// what went wrong.
+//
+// The verify parameter can be used to fine tune whether nonce verification
+// should be done or not. The reason behind the optional check is because some
+// of the header retrieval mechanisms already need to verfy nonces, as well as
+// because nonces can be verified sparsely, not needing to check each.
+func (self *BlockChain) InsertHeaderChain(chain []*types.Header, verify bool) (int, error) {
+ self.wg.Add(1)
+ defer self.wg.Done()
+
+ // Make sure only one thread manipulates the chain at once
+ self.chainmu.Lock()
+ defer self.chainmu.Unlock()
+
+ // Collect some import statistics to report on
+ stats := struct{ processed, ignored int }{}
+ start := time.Now()
+
+ // Start the parallel nonce verifier, with a fake nonce if not requested
+ verifier := self.pow
+ if !verify {
+ verifier = FakePow{}
+ }
+ nonceAbort, nonceResults := verifyNoncesFromHeaders(verifier, chain)
+ defer close(nonceAbort)
+
+ // Iterate over the headers, inserting any new ones
+ complete := make([]bool, len(chain))
+ for i, header := range chain {
+ // Short circuit insertion if shutting down
+ if atomic.LoadInt32(&self.procInterrupt) == 1 {
+ glog.V(logger.Debug).Infoln("Premature abort during header chain processing")
+ break
+ }
+ hash := header.Hash()
+
+ // Accumulate verification results until the next header is verified
+ for !complete[i] {
+ if res := <-nonceResults; res.valid {
+ complete[res.index] = true
+ } else {
+ header := chain[res.index]
+ return res.index, &BlockNonceErr{
+ Hash: header.Hash(),
+ Number: new(big.Int).Set(header.Number),
+ Nonce: header.Nonce.Uint64(),
+ }
+ }
+ }
+ if BadHashes[hash] {
+ glog.V(logger.Error).Infof("Bad header %d [%x…], known bad hash", header.Number, hash)
+ return i, BadHashError(hash)
+ }
+ // Write the header to the chain and get the status
+ if self.HasHeader(hash) {
+ stats.ignored++
+ continue
+ }
+ if err := self.writeHeader(header); err != nil {
+ return i, err
+ }
+ stats.processed++
+ }
+ // Report some public statistics so the user has a clue what's going on
+ first, last := chain[0], chain[len(chain)-1]
+ glog.V(logger.Info).Infof("imported %d header(s) (%d ignored) in %v. #%v [%x… / %x…]", stats.processed, stats.ignored,
+ time.Since(start), last.Number, first.Hash().Bytes()[:4], last.Hash().Bytes()[:4])
+
+ return 0, nil
+}
+
// WriteBlock writes the block to the chain.
func (self *BlockChain) WriteBlock(block *types.Block) (status writeStatus, err error) {
self.wg.Add(1)
@@ -522,7 +692,7 @@ func (self *BlockChain) WriteBlock(block *types.Block) (status writeStatus, err
// Compare the TD of the last known block in the canonical chain to make sure it's greater.
// At this point it's possible that a different chain (fork) becomes the new canonical chain.
- if td.Cmp(self.Td()) > 0 {
+ if td.Cmp(self.GetTd(self.currentBlock.Hash())) > 0 {
// chain fork
if block.ParentHash() != cblock.Hash() {
// during split we merge two different chains and create the new canonical chain
@@ -534,7 +704,6 @@ func (self *BlockChain) WriteBlock(block *types.Block) (status writeStatus, err
status = CanonStatTy
self.mu.Lock()
- self.setTotalDifficulty(td)
self.insert(block)
self.mu.Unlock()
} else {
@@ -580,7 +749,7 @@ func (self *BlockChain) InsertChain(chain types.Blocks) (int, error) {
txcount := 0
for i, block := range chain {
if atomic.LoadInt32(&self.procInterrupt) == 1 {
- glog.V(logger.Debug).Infoln("Premature abort during chain processing")
+ glog.V(logger.Debug).Infoln("Premature abort during block chain processing")
break
}
@@ -788,8 +957,7 @@ func (self *BlockChain) postChainEvents(events []interface{}) {
if event, ok := event.(ChainEvent); ok {
// We need some control over the mining operation. Acquiring locks and waiting for the miner to create new block takes too long
// and in most cases isn't even necessary.
- if self.currentBlock.Hash() == event.Hash {
- self.currentGasLimit = CalcGasLimit(event.Block)
+ if self.LastBlockHash() == event.Hash {
self.eventMux.Post(ChainHeadEvent{event.Block})
}
}
diff --git a/core/blockchain_test.go b/core/blockchain_test.go
index 13971ccba681bc039a01982a27add4c9d7291d99..4d0f13ef1c645c2545de3cccb990ae26d3b841ac 100644
--- a/core/blockchain_test.go
+++ b/core/blockchain_test.go
@@ -64,44 +64,58 @@ func theBlockChain(db ethdb.Database, t *testing.T) *BlockChain {
}
// Test fork of length N starting from block i
-func testFork(t *testing.T, bman *BlockProcessor, i, N int, f func(td1, td2 *big.Int)) {
- // switch databases to process the new chain
- db, err := ethdb.NewMemDatabase()
- if err != nil {
- t.Fatal("Failed to create db:", err)
- }
- // copy old chain up to i into new db with deterministic canonical
- bman2, err := newCanonical(i, db)
+func testFork(t *testing.T, processor *BlockProcessor, i, n int, full bool, comparator func(td1, td2 *big.Int)) {
+ // Copy old chain up to #i into a new db
+ db, processor2, err := newCanonical(i, full)
if err != nil {
t.Fatal("could not make new canonical in testFork", err)
}
- // assert the bmans have the same block at i
- bi1 := bman.bc.GetBlockByNumber(uint64(i)).Hash()
- bi2 := bman2.bc.GetBlockByNumber(uint64(i)).Hash()
- if bi1 != bi2 {
- fmt.Printf("%+v\n%+v\n\n", bi1, bi2)
- t.Fatal("chains do not have the same hash at height", i)
+ // Assert the chains have the same header/block at #i
+ var hash1, hash2 common.Hash
+ if full {
+ hash1 = processor.bc.GetBlockByNumber(uint64(i)).Hash()
+ hash2 = processor2.bc.GetBlockByNumber(uint64(i)).Hash()
+ } else {
+ hash1 = processor.bc.GetHeaderByNumber(uint64(i)).Hash()
+ hash2 = processor2.bc.GetHeaderByNumber(uint64(i)).Hash()
}
- bman2.bc.SetProcessor(bman2)
-
- // extend the fork
- parent := bman2.bc.CurrentBlock()
- chainB := makeChain(parent, N, db, forkSeed)
- _, err = bman2.bc.InsertChain(chainB)
- if err != nil {
- t.Fatal("Insert chain error for fork:", err)
+ if hash1 != hash2 {
+ t.Errorf("chain content mismatch at %d: have hash %v, want hash %v", i, hash2, hash1)
}
-
- tdpre := bman.bc.Td()
- // Test the fork's blocks on the original chain
- td, err := testChain(chainB, bman)
- if err != nil {
- t.Fatal("expected chainB not to give errors:", err)
+ // Extend the newly created chain
+ var (
+ blockChainB []*types.Block
+ headerChainB []*types.Header
+ )
+ if full {
+ blockChainB = makeBlockChain(processor2.bc.CurrentBlock(), n, db, forkSeed)
+ if _, err := processor2.bc.InsertChain(blockChainB); err != nil {
+ t.Fatalf("failed to insert forking chain: %v", err)
+ }
+ } else {
+ headerChainB = makeHeaderChain(processor2.bc.CurrentHeader(), n, db, forkSeed)
+ if _, err := processor2.bc.InsertHeaderChain(headerChainB, true); err != nil {
+ t.Fatalf("failed to insert forking chain: %v", err)
+ }
}
- // Compare difficulties
- f(tdpre, td)
+ // Sanity check that the forked chain can be imported into the original
+ var tdPre, tdPost *big.Int
- // Loop over parents making sure reconstruction is done properly
+ if full {
+ tdPre = processor.bc.GetTd(processor.bc.CurrentBlock().Hash())
+ if err := testBlockChainImport(blockChainB, processor); err != nil {
+ t.Fatalf("failed to import forked block chain: %v", err)
+ }
+ tdPost = processor.bc.GetTd(blockChainB[len(blockChainB)-1].Hash())
+ } else {
+ tdPre = processor.bc.GetTd(processor.bc.CurrentHeader().Hash())
+ if err := testHeaderChainImport(headerChainB, processor); err != nil {
+ t.Fatalf("failed to import forked header chain: %v", err)
+ }
+ tdPost = processor.bc.GetTd(headerChainB[len(headerChainB)-1].Hash())
+ }
+ // Compare the total difficulties of the chains
+ comparator(tdPre, tdPost)
}
func printChain(bc *BlockChain) {
@@ -111,22 +125,41 @@ func printChain(bc *BlockChain) {
}
}
-// process blocks against a chain
-func testChain(chainB types.Blocks, bman *BlockProcessor) (*big.Int, error) {
- for _, block := range chainB {
- _, _, err := bman.bc.processor.Process(block)
- if err != nil {
+// testBlockChainImport tries to process a chain of blocks, writing them into
+// the database if successful.
+func testBlockChainImport(chain []*types.Block, processor *BlockProcessor) error {
+ for _, block := range chain {
+ // Try and process the block
+ if _, _, err := processor.Process(block); err != nil {
if IsKnownBlockErr(err) {
continue
}
- return nil, err
+ return err
}
- bman.bc.mu.Lock()
- WriteTd(bman.bc.chainDb, block.Hash(), new(big.Int).Add(block.Difficulty(), bman.bc.GetTd(block.ParentHash())))
- WriteBlock(bman.bc.chainDb, block)
- bman.bc.mu.Unlock()
+ // Manually insert the block into the database, but don't reorganize (allows subsequent testing)
+ processor.bc.mu.Lock()
+ WriteTd(processor.chainDb, block.Hash(), new(big.Int).Add(block.Difficulty(), processor.bc.GetTd(block.ParentHash())))
+ WriteBlock(processor.chainDb, block)
+ processor.bc.mu.Unlock()
}
- return bman.bc.GetTd(chainB[len(chainB)-1].Hash()), nil
+ return nil
+}
+
+// testHeaderChainImport tries to process a chain of header, writing them into
+// the database if successful.
+func testHeaderChainImport(chain []*types.Header, processor *BlockProcessor) error {
+ for _, header := range chain {
+ // Try and validate the header
+ if err := processor.ValidateHeader(header, false, false); err != nil {
+ return err
+ }
+ // Manually insert the header into the database, but don't reorganize (allows subsequent testing)
+ processor.bc.mu.Lock()
+ WriteTd(processor.chainDb, header.Hash(), new(big.Int).Add(header.Difficulty, processor.bc.GetTd(header.ParentHash)))
+ WriteHeader(processor.chainDb, header)
+ processor.bc.mu.Unlock()
+ }
+ return nil
}
func loadChain(fn string, t *testing.T) (types.Blocks, error) {
@@ -154,139 +187,147 @@ func insertChain(done chan bool, blockchain *BlockChain, chain types.Blocks, t *
}
func TestLastBlock(t *testing.T) {
- db, err := ethdb.NewMemDatabase()
- if err != nil {
- t.Fatal("Failed to create db:", err)
- }
+ db, _ := ethdb.NewMemDatabase()
+
bchain := theBlockChain(db, t)
- block := makeChain(bchain.CurrentBlock(), 1, db, 0)[0]
+ block := makeBlockChain(bchain.CurrentBlock(), 1, db, 0)[0]
bchain.insert(block)
if block.Hash() != GetHeadBlockHash(db) {
t.Errorf("Write/Get HeadBlockHash failed")
}
}
-func TestExtendCanonical(t *testing.T) {
- CanonicalLength := 5
- db, err := ethdb.NewMemDatabase()
- if err != nil {
- t.Fatal("Failed to create db:", err)
- }
- // make first chain starting from genesis
- bman, err := newCanonical(CanonicalLength, db)
+// Tests that given a starting canonical chain of a given size, it can be extended
+// with various length chains.
+func TestExtendCanonicalHeaders(t *testing.T) { testExtendCanonical(t, false) }
+func TestExtendCanonicalBlocks(t *testing.T) { testExtendCanonical(t, true) }
+
+func testExtendCanonical(t *testing.T, full bool) {
+ length := 5
+
+ // Make first chain starting from genesis
+ _, processor, err := newCanonical(length, full)
if err != nil {
- t.Fatal("Could not make new canonical chain:", err)
+ t.Fatalf("failed to make new canonical chain: %v", err)
}
- f := func(td1, td2 *big.Int) {
+ // Define the difficulty comparator
+ better := func(td1, td2 *big.Int) {
if td2.Cmp(td1) <= 0 {
- t.Error("expected chainB to have higher difficulty. Got", td2, "expected more than", td1)
+ t.Errorf("total difficulty mismatch: have %v, expected more than %v", td2, td1)
}
}
- // Start fork from current height (CanonicalLength)
- testFork(t, bman, CanonicalLength, 1, f)
- testFork(t, bman, CanonicalLength, 2, f)
- testFork(t, bman, CanonicalLength, 5, f)
- testFork(t, bman, CanonicalLength, 10, f)
+ // Start fork from current height
+ testFork(t, processor, length, 1, full, better)
+ testFork(t, processor, length, 2, full, better)
+ testFork(t, processor, length, 5, full, better)
+ testFork(t, processor, length, 10, full, better)
}
-func TestShorterFork(t *testing.T) {
- db, err := ethdb.NewMemDatabase()
- if err != nil {
- t.Fatal("Failed to create db:", err)
- }
- // make first chain starting from genesis
- bman, err := newCanonical(10, db)
+// Tests that given a starting canonical chain of a given size, creating shorter
+// forks do not take canonical ownership.
+func TestShorterForkHeaders(t *testing.T) { testShorterFork(t, false) }
+func TestShorterForkBlocks(t *testing.T) { testShorterFork(t, true) }
+
+func testShorterFork(t *testing.T, full bool) {
+ length := 10
+
+ // Make first chain starting from genesis
+ _, processor, err := newCanonical(length, full)
if err != nil {
- t.Fatal("Could not make new canonical chain:", err)
+ t.Fatalf("failed to make new canonical chain: %v", err)
}
- f := func(td1, td2 *big.Int) {
+ // Define the difficulty comparator
+ worse := func(td1, td2 *big.Int) {
if td2.Cmp(td1) >= 0 {
- t.Error("expected chainB to have lower difficulty. Got", td2, "expected less than", td1)
+ t.Errorf("total difficulty mismatch: have %v, expected less than %v", td2, td1)
}
}
- // Sum of numbers must be less than 10
- // for this to be a shorter fork
- testFork(t, bman, 0, 3, f)
- testFork(t, bman, 0, 7, f)
- testFork(t, bman, 1, 1, f)
- testFork(t, bman, 1, 7, f)
- testFork(t, bman, 5, 3, f)
- testFork(t, bman, 5, 4, f)
+ // Sum of numbers must be less than `length` for this to be a shorter fork
+ testFork(t, processor, 0, 3, full, worse)
+ testFork(t, processor, 0, 7, full, worse)
+ testFork(t, processor, 1, 1, full, worse)
+ testFork(t, processor, 1, 7, full, worse)
+ testFork(t, processor, 5, 3, full, worse)
+ testFork(t, processor, 5, 4, full, worse)
}
-func TestLongerFork(t *testing.T) {
- db, err := ethdb.NewMemDatabase()
- if err != nil {
- t.Fatal("Failed to create db:", err)
- }
- // make first chain starting from genesis
- bman, err := newCanonical(10, db)
+// Tests that given a starting canonical chain of a given size, creating longer
+// forks do take canonical ownership.
+func TestLongerForkHeaders(t *testing.T) { testLongerFork(t, false) }
+func TestLongerForkBlocks(t *testing.T) { testLongerFork(t, true) }
+
+func testLongerFork(t *testing.T, full bool) {
+ length := 10
+
+ // Make first chain starting from genesis
+ _, processor, err := newCanonical(length, full)
if err != nil {
- t.Fatal("Could not make new canonical chain:", err)
+ t.Fatalf("failed to make new canonical chain: %v", err)
}
- f := func(td1, td2 *big.Int) {
+ // Define the difficulty comparator
+ better := func(td1, td2 *big.Int) {
if td2.Cmp(td1) <= 0 {
- t.Error("expected chainB to have higher difficulty. Got", td2, "expected more than", td1)
+ t.Errorf("total difficulty mismatch: have %v, expected more than %v", td2, td1)
}
}
- // Sum of numbers must be greater than 10
- // for this to be a longer fork
- testFork(t, bman, 0, 11, f)
- testFork(t, bman, 0, 15, f)
- testFork(t, bman, 1, 10, f)
- testFork(t, bman, 1, 12, f)
- testFork(t, bman, 5, 6, f)
- testFork(t, bman, 5, 8, f)
+ // Sum of numbers must be greater than `length` for this to be a longer fork
+ testFork(t, processor, 0, 11, full, better)
+ testFork(t, processor, 0, 15, full, better)
+ testFork(t, processor, 1, 10, full, better)
+ testFork(t, processor, 1, 12, full, better)
+ testFork(t, processor, 5, 6, full, better)
+ testFork(t, processor, 5, 8, full, better)
}
-func TestEqualFork(t *testing.T) {
- db, err := ethdb.NewMemDatabase()
- if err != nil {
- t.Fatal("Failed to create db:", err)
- }
- bman, err := newCanonical(10, db)
+// Tests that given a starting canonical chain of a given size, creating equal
+// forks do take canonical ownership.
+func TestEqualForkHeaders(t *testing.T) { testEqualFork(t, false) }
+func TestEqualForkBlocks(t *testing.T) { testEqualFork(t, true) }
+
+func testEqualFork(t *testing.T, full bool) {
+ length := 10
+
+ // Make first chain starting from genesis
+ _, processor, err := newCanonical(length, full)
if err != nil {
- t.Fatal("Could not make new canonical chain:", err)
+ t.Fatalf("failed to make new canonical chain: %v", err)
}
- f := func(td1, td2 *big.Int) {
+ // Define the difficulty comparator
+ equal := func(td1, td2 *big.Int) {
if td2.Cmp(td1) != 0 {
- t.Error("expected chainB to have equal difficulty. Got", td2, "expected ", td1)
+ t.Errorf("total difficulty mismatch: have %v, want %v", td2, td1)
}
}
- // Sum of numbers must be equal to 10
- // for this to be an equal fork
- testFork(t, bman, 0, 10, f)
- testFork(t, bman, 1, 9, f)
- testFork(t, bman, 2, 8, f)
- testFork(t, bman, 5, 5, f)
- testFork(t, bman, 6, 4, f)
- testFork(t, bman, 9, 1, f)
+ // Sum of numbers must be equal to `length` for this to be an equal fork
+ testFork(t, processor, 0, 10, full, equal)
+ testFork(t, processor, 1, 9, full, equal)
+ testFork(t, processor, 2, 8, full, equal)
+ testFork(t, processor, 5, 5, full, equal)
+ testFork(t, processor, 6, 4, full, equal)
+ testFork(t, processor, 9, 1, full, equal)
}
-func TestBrokenChain(t *testing.T) {
- db, err := ethdb.NewMemDatabase()
- if err != nil {
- t.Fatal("Failed to create db:", err)
- }
- bman, err := newCanonical(10, db)
- if err != nil {
- t.Fatal("Could not make new canonical chain:", err)
- }
- db2, err := ethdb.NewMemDatabase()
- if err != nil {
- t.Fatal("Failed to create db:", err)
- }
- bman2, err := newCanonical(10, db2)
+// Tests that chains missing links do not get accepted by the processor.
+func TestBrokenHeaderChain(t *testing.T) { testBrokenChain(t, false) }
+func TestBrokenBlockChain(t *testing.T) { testBrokenChain(t, true) }
+
+func testBrokenChain(t *testing.T, full bool) {
+ // Make chain starting from genesis
+ db, processor, err := newCanonical(10, full)
if err != nil {
- t.Fatal("Could not make new canonical chain:", err)
+ t.Fatalf("failed to make new canonical chain: %v", err)
}
- bman2.bc.SetProcessor(bman2)
- parent := bman2.bc.CurrentBlock()
- chainB := makeChain(parent, 5, db2, forkSeed)
- chainB = chainB[1:]
- _, err = testChain(chainB, bman)
- if err == nil {
- t.Error("expected broken chain to return error")
+ // Create a forked chain, and try to insert with a missing link
+ if full {
+ chain := makeBlockChain(processor.bc.CurrentBlock(), 5, db, forkSeed)[1:]
+ if err := testBlockChainImport(chain, processor); err == nil {
+ t.Errorf("broken block chain not reported")
+ }
+ } else {
+ chain := makeHeaderChain(processor.bc.CurrentHeader(), 5, db, forkSeed)[1:]
+ if err := testHeaderChainImport(chain, processor); err == nil {
+ t.Errorf("broken header chain not reported")
+ }
}
}
@@ -376,7 +417,16 @@ type bproc struct{}
func (bproc) Process(*types.Block) (vm.Logs, types.Receipts, error) { return nil, nil, nil }
-func makeChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Block {
+func makeHeaderChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Header {
+ blocks := makeBlockChainWithDiff(genesis, d, seed)
+ headers := make([]*types.Header, len(blocks))
+ for i, block := range blocks {
+ headers[i] = block.Header()
+ }
+ return headers
+}
+
+func makeBlockChainWithDiff(genesis *types.Block, d []int, seed byte) []*types.Block {
var chain []*types.Block
for i, difficulty := range d {
header := &types.Header{
@@ -410,142 +460,209 @@ func chm(genesis *types.Block, db ethdb.Database) *BlockChain {
return bc
}
-func TestReorgLongest(t *testing.T) {
- db, _ := ethdb.NewMemDatabase()
+// Tests that reorganizing a long difficult chain after a short easy one
+// overwrites the canonical numbers and links in the database.
+func TestReorgLongHeaders(t *testing.T) { testReorgLong(t, false) }
+func TestReorgLongBlocks(t *testing.T) { testReorgLong(t, true) }
- genesis, err := WriteTestNetGenesisBlock(db, 0)
- if err != nil {
- t.Error(err)
- t.FailNow()
- }
- bc := chm(genesis, db)
+func testReorgLong(t *testing.T, full bool) {
+ testReorg(t, []int{1, 2, 4}, []int{1, 2, 3, 4}, 10, full)
+}
- chain1 := makeChainWithDiff(genesis, []int{1, 2, 4}, 10)
- chain2 := makeChainWithDiff(genesis, []int{1, 2, 3, 4}, 11)
+// Tests that reorganizing a short difficult chain after a long easy one
+// overwrites the canonical numbers and links in the database.
+func TestReorgShortHeaders(t *testing.T) { testReorgShort(t, false) }
+func TestReorgShortBlocks(t *testing.T) { testReorgShort(t, true) }
- bc.InsertChain(chain1)
- bc.InsertChain(chain2)
+func testReorgShort(t *testing.T, full bool) {
+ testReorg(t, []int{1, 2, 3, 4}, []int{1, 10}, 11, full)
+}
- prev := bc.CurrentBlock()
- for block := bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 1); block.NumberU64() != 0; prev, block = block, bc.GetBlockByNumber(block.NumberU64()-1) {
- if prev.ParentHash() != block.Hash() {
- t.Errorf("parent hash mismatch %x - %x", prev.ParentHash(), block.Hash())
+func testReorg(t *testing.T, first, second []int, td int64, full bool) {
+ // Create a pristine block chain
+ db, _ := ethdb.NewMemDatabase()
+ genesis, _ := WriteTestNetGenesisBlock(db, 0)
+ bc := chm(genesis, db)
+
+ // Insert an easy and a difficult chain afterwards
+ if full {
+ bc.InsertChain(makeBlockChainWithDiff(genesis, first, 11))
+ bc.InsertChain(makeBlockChainWithDiff(genesis, second, 22))
+ } else {
+ bc.InsertHeaderChain(makeHeaderChainWithDiff(genesis, first, 11), false)
+ bc.InsertHeaderChain(makeHeaderChainWithDiff(genesis, second, 22), false)
+ }
+ // Check that the chain is valid number and link wise
+ if full {
+ prev := bc.CurrentBlock()
+ for block := bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 1); block.NumberU64() != 0; prev, block = block, bc.GetBlockByNumber(block.NumberU64()-1) {
+ if prev.ParentHash() != block.Hash() {
+ t.Errorf("parent block hash mismatch: have %x, want %x", prev.ParentHash(), block.Hash())
+ }
+ }
+ } else {
+ prev := bc.CurrentHeader()
+ for header := bc.GetHeaderByNumber(bc.CurrentHeader().Number.Uint64() - 1); header.Number.Uint64() != 0; prev, header = header, bc.GetHeaderByNumber(header.Number.Uint64()-1) {
+ if prev.ParentHash != header.Hash() {
+ t.Errorf("parent header hash mismatch: have %x, want %x", prev.ParentHash, header.Hash())
+ }
+ }
+ }
+ // Make sure the chain total difficulty is the correct one
+ want := new(big.Int).Add(genesis.Difficulty(), big.NewInt(td))
+ if full {
+ if have := bc.GetTd(bc.CurrentBlock().Hash()); have.Cmp(want) != 0 {
+ t.Errorf("total difficulty mismatch: have %v, want %v", have, want)
+ }
+ } else {
+ if have := bc.GetTd(bc.CurrentHeader().Hash()); have.Cmp(want) != 0 {
+ t.Errorf("total difficulty mismatch: have %v, want %v", have, want)
}
}
}
-func TestBadHashes(t *testing.T) {
+// Tests that the insertion functions detect banned hashes.
+func TestBadHeaderHashes(t *testing.T) { testBadHashes(t, false) }
+func TestBadBlockHashes(t *testing.T) { testBadHashes(t, true) }
+
+func testBadHashes(t *testing.T, full bool) {
+ // Create a pristine block chain
db, _ := ethdb.NewMemDatabase()
- genesis, err := WriteTestNetGenesisBlock(db, 0)
- if err != nil {
- t.Error(err)
- t.FailNow()
- }
+ genesis, _ := WriteTestNetGenesisBlock(db, 0)
bc := chm(genesis, db)
- chain := makeChainWithDiff(genesis, []int{1, 2, 4}, 10)
- BadHashes[chain[2].Header().Hash()] = true
-
- _, err = bc.InsertChain(chain)
+ // Create a chain, ban a hash and try to import
+ var err error
+ if full {
+ blocks := makeBlockChainWithDiff(genesis, []int{1, 2, 4}, 10)
+ BadHashes[blocks[2].Header().Hash()] = true
+ _, err = bc.InsertChain(blocks)
+ } else {
+ headers := makeHeaderChainWithDiff(genesis, []int{1, 2, 4}, 10)
+ BadHashes[headers[2].Hash()] = true
+ _, err = bc.InsertHeaderChain(headers, true)
+ }
if !IsBadHashError(err) {
t.Errorf("error mismatch: want: BadHashError, have: %v", err)
}
}
-func TestReorgBadHashes(t *testing.T) {
+// Tests that bad hashes are detected on boot, and the chan rolled back to a
+// good state prior to the bad hash.
+func TestReorgBadHeaderHashes(t *testing.T) { testReorgBadHashes(t, false) }
+func TestReorgBadBlockHashes(t *testing.T) { testReorgBadHashes(t, true) }
+
+func testReorgBadHashes(t *testing.T, full bool) {
+ // Create a pristine block chain
db, _ := ethdb.NewMemDatabase()
- genesis, err := WriteTestNetGenesisBlock(db, 0)
- if err != nil {
- t.Error(err)
- t.FailNow()
- }
+ genesis, _ := WriteTestNetGenesisBlock(db, 0)
bc := chm(genesis, db)
- chain := makeChainWithDiff(genesis, []int{1, 2, 3, 4}, 11)
- bc.InsertChain(chain)
-
- if chain[3].Header().Hash() != bc.LastBlockHash() {
- t.Errorf("last block hash mismatch: want: %x, have: %x", chain[3].Header().Hash(), bc.LastBlockHash())
- }
-
- // NewChainManager should check BadHashes when loading it db
- BadHashes[chain[3].Header().Hash()] = true
-
- var eventMux event.TypeMux
- ncm, err := NewBlockChain(db, FakePow{}, &eventMux)
- if err != nil {
- t.Errorf("NewChainManager err: %s", err)
- }
-
- // check it set head to (valid) parent of bad hash block
- if chain[2].Header().Hash() != ncm.LastBlockHash() {
- t.Errorf("last block hash mismatch: want: %x, have: %x", chain[2].Header().Hash(), ncm.LastBlockHash())
- }
+ // Create a chain, import and ban aferwards
+ headers := makeHeaderChainWithDiff(genesis, []int{1, 2, 3, 4}, 10)
+ blocks := makeBlockChainWithDiff(genesis, []int{1, 2, 3, 4}, 10)
- if chain[2].Header().GasLimit.Cmp(ncm.GasLimit()) != 0 {
- t.Errorf("current block gasLimit mismatch: want: %x, have: %x", chain[2].Header().GasLimit, ncm.GasLimit())
+ if full {
+ if _, err := bc.InsertChain(blocks); err != nil {
+ t.Fatalf("failed to import blocks: %v", err)
+ }
+ if bc.CurrentBlock().Hash() != blocks[3].Hash() {
+ t.Errorf("last block hash mismatch: have: %x, want %x", bc.CurrentBlock().Hash(), blocks[3].Header().Hash())
+ }
+ BadHashes[blocks[3].Header().Hash()] = true
+ defer func() { delete(BadHashes, blocks[3].Header().Hash()) }()
+ } else {
+ if _, err := bc.InsertHeaderChain(headers, true); err != nil {
+ t.Fatalf("failed to import headers: %v", err)
+ }
+ if bc.CurrentHeader().Hash() != headers[3].Hash() {
+ t.Errorf("last header hash mismatch: have: %x, want %x", bc.CurrentHeader().Hash(), headers[3].Hash())
+ }
+ BadHashes[headers[3].Hash()] = true
+ defer func() { delete(BadHashes, headers[3].Hash()) }()
}
-}
-
-func TestReorgShortest(t *testing.T) {
- db, _ := ethdb.NewMemDatabase()
- genesis, err := WriteTestNetGenesisBlock(db, 0)
+ // Create a new chain manager and check it rolled back the state
+ ncm, err := NewBlockChain(db, FakePow{}, new(event.TypeMux))
if err != nil {
- t.Error(err)
- t.FailNow()
+ t.Fatalf("failed to create new chain manager: %v", err)
}
- bc := chm(genesis, db)
-
- chain1 := makeChainWithDiff(genesis, []int{1, 2, 3, 4}, 10)
- chain2 := makeChainWithDiff(genesis, []int{1, 10}, 11)
-
- bc.InsertChain(chain1)
- bc.InsertChain(chain2)
-
- prev := bc.CurrentBlock()
- for block := bc.GetBlockByNumber(bc.CurrentBlock().NumberU64() - 1); block.NumberU64() != 0; prev, block = block, bc.GetBlockByNumber(block.NumberU64()-1) {
- if prev.ParentHash() != block.Hash() {
- t.Errorf("parent hash mismatch %x - %x", prev.ParentHash(), block.Hash())
+ if full {
+ if ncm.CurrentBlock().Hash() != blocks[2].Header().Hash() {
+ t.Errorf("last block hash mismatch: have: %x, want %x", ncm.CurrentBlock().Hash(), blocks[2].Header().Hash())
+ }
+ if blocks[2].Header().GasLimit.Cmp(ncm.GasLimit()) != 0 {
+ t.Errorf("last block gasLimit mismatch: have: %x, want %x", ncm.GasLimit(), blocks[2].Header().GasLimit)
+ }
+ } else {
+ if ncm.CurrentHeader().Hash() != genesis.Hash() {
+ t.Errorf("last header hash mismatch: have: %x, want %x", ncm.CurrentHeader().Hash(), genesis.Hash())
}
}
}
-func TestInsertNonceError(t *testing.T) {
+// Tests chain insertions in the face of one entity containing an invalid nonce.
+func TestHeadersInsertNonceError(t *testing.T) { testInsertNonceError(t, false) }
+func TestBlocksInsertNonceError(t *testing.T) { testInsertNonceError(t, true) }
+
+func testInsertNonceError(t *testing.T, full bool) {
for i := 1; i < 25 && !t.Failed(); i++ {
- db, _ := ethdb.NewMemDatabase()
- genesis, err := WriteTestNetGenesisBlock(db, 0)
+ // Create a pristine chain and database
+ db, processor, err := newCanonical(0, full)
if err != nil {
- t.Error(err)
- t.FailNow()
+ t.Fatalf("failed to create pristine chain: %v", err)
}
- bc := chm(genesis, db)
- bc.processor = NewBlockProcessor(db, bc.pow, bc, bc.eventMux)
- blocks := makeChain(bc.currentBlock, i, db, 0)
+ bc := processor.bc
+
+ // Create and insert a chain with a failing nonce
+ var (
+ failAt int
+ failRes int
+ failNum uint64
+ failHash common.Hash
+ )
+ if full {
+ blocks := makeBlockChain(processor.bc.CurrentBlock(), i, db, 0)
+
+ failAt = rand.Int() % len(blocks)
+ failNum = blocks[failAt].NumberU64()
+ failHash = blocks[failAt].Hash()
+
+ processor.bc.pow = failPow{failNum}
+ failRes, err = processor.bc.InsertChain(blocks)
+ } else {
+ headers := makeHeaderChain(processor.bc.CurrentHeader(), i, db, 0)
- fail := rand.Int() % len(blocks)
- failblock := blocks[fail]
- bc.pow = failPow{failblock.NumberU64()}
- n, err := bc.InsertChain(blocks)
+ failAt = rand.Int() % len(headers)
+ failNum = headers[failAt].Number.Uint64()
+ failHash = headers[failAt].Hash()
+ processor.bc.pow = failPow{failNum}
+ failRes, err = processor.bc.InsertHeaderChain(headers, true)
+ }
// Check that the returned error indicates the nonce failure.
- if n != fail {
- t.Errorf("(i=%d) wrong failed block index: got %d, want %d", i, n, fail)
+ if failRes != failAt {
+ t.Errorf("test %d: failure index mismatch: have %d, want %d", i, failRes, failAt)
}
if !IsBlockNonceErr(err) {
- t.Fatalf("(i=%d) got %q, want a nonce error", i, err)
+ t.Fatalf("test %d: error mismatch: have %v, want nonce error", i, err)
}
nerr := err.(*BlockNonceErr)
- if nerr.Number.Cmp(failblock.Number()) != 0 {
- t.Errorf("(i=%d) wrong block number in error, got %v, want %v", i, nerr.Number, failblock.Number())
+ if nerr.Number.Uint64() != failNum {
+ t.Errorf("test %d: number mismatch: have %v, want %v", i, nerr.Number, failNum)
}
- if nerr.Hash != failblock.Hash() {
- t.Errorf("(i=%d) wrong block hash in error, got %v, want %v", i, nerr.Hash, failblock.Hash())
+ if nerr.Hash != failHash {
+ t.Errorf("test %d: hash mismatch: have %x, want %x", i, nerr.Hash[:4], failHash[:4])
}
-
// Check that all no blocks after the failing block have been inserted.
- for _, block := range blocks[fail:] {
- if bc.HasBlock(block.Hash()) {
- t.Errorf("(i=%d) invalid block %d present in chain", i, block.NumberU64())
+ for j := 0; j < i-failAt; j++ {
+ if full {
+ if block := bc.GetBlockByNumber(failNum + uint64(j)); block != nil {
+ t.Errorf("test %d: invalid block in chain: %v", i, block)
+ }
+ } else {
+ if header := bc.GetHeaderByNumber(failNum + uint64(j)); header != nil {
+ t.Errorf("test %d: invalid header in chain: %v", i, header)
+ }
}
}
}
diff --git a/core/chain_makers.go b/core/chain_makers.go
index 85a4955db6a2525703895b5f6c9d99fc812440ad..eb451c00dea9274e2d9a383eed32e25026cebba0 100644
--- a/core/chain_makers.go
+++ b/core/chain_makers.go
@@ -211,25 +211,49 @@ func makeHeader(parent *types.Block, state *state.StateDB) *types.Header {
}
}
-// newCanonical creates a new deterministic canonical chain by running
-// InsertChain on the result of makeChain.
-func newCanonical(n int, db ethdb.Database) (*BlockProcessor, error) {
+// newCanonical creates a chain database, and injects a deterministic canonical
+// chain. Depending on the full flag, if creates either a full block chain or a
+// header only chain.
+func newCanonical(n int, full bool) (ethdb.Database, *BlockProcessor, error) {
+ // Create te new chain database
+ db, _ := ethdb.NewMemDatabase()
evmux := &event.TypeMux{}
- WriteTestNetGenesisBlock(db, 0)
- chainman, _ := NewBlockChain(db, FakePow{}, evmux)
- bman := NewBlockProcessor(db, FakePow{}, chainman, evmux)
- bman.bc.SetProcessor(bman)
- parent := bman.bc.CurrentBlock()
+ // Initialize a fresh chain with only a genesis block
+ genesis, _ := WriteTestNetGenesisBlock(db, 0)
+
+ blockchain, _ := NewBlockChain(db, FakePow{}, evmux)
+ processor := NewBlockProcessor(db, FakePow{}, blockchain, evmux)
+ processor.bc.SetProcessor(processor)
+
+ // Create and inject the requested chain
if n == 0 {
- return bman, nil
+ return db, processor, nil
+ }
+ if full {
+ // Full block-chain requested
+ blocks := makeBlockChain(genesis, n, db, canonicalSeed)
+ _, err := blockchain.InsertChain(blocks)
+ return db, processor, err
+ }
+ // Header-only chain requested
+ headers := makeHeaderChain(genesis.Header(), n, db, canonicalSeed)
+ _, err := blockchain.InsertHeaderChain(headers, true)
+ return db, processor, err
+}
+
+// makeHeaderChain creates a deterministic chain of headers rooted at parent.
+func makeHeaderChain(parent *types.Header, n int, db ethdb.Database, seed int) []*types.Header {
+ blocks := makeBlockChain(types.NewBlockWithHeader(parent), n, db, seed)
+ headers := make([]*types.Header, len(blocks))
+ for i, block := range blocks {
+ headers[i] = block.Header()
}
- lchain := makeChain(parent, n, db, canonicalSeed)
- _, err := bman.bc.InsertChain(lchain)
- return bman, err
+ return headers
}
-func makeChain(parent *types.Block, n int, db ethdb.Database, seed int) []*types.Block {
+// makeBlockChain creates a deterministic chain of blocks rooted at parent.
+func makeBlockChain(parent *types.Block, n int, db ethdb.Database, seed int) []*types.Block {
return GenerateChain(parent, db, n, func(i int, b *BlockGen) {
b.SetCoinbase(common.Address{0: byte(seed), 19: byte(i)})
})
diff --git a/core/types/block.go b/core/types/block.go
index 7a84045a6320254b9a0c56603898c30700c3a67d..f7baa217528a97825f07672a31490acc755fc84f 100644
--- a/core/types/block.go
+++ b/core/types/block.go
@@ -184,7 +184,7 @@ var (
// are ignored and set to values derived from the given txs, uncles
// and receipts.
func NewBlock(header *Header, txs []*Transaction, uncles []*Header, receipts []*Receipt) *Block {
- b := &Block{header: copyHeader(header), td: new(big.Int)}
+ b := &Block{header: CopyHeader(header), td: new(big.Int)}
// TODO: panic if len(txs) != len(receipts)
if len(txs) == 0 {
@@ -210,7 +210,7 @@ func NewBlock(header *Header, txs []*Transaction, uncles []*Header, receipts []*
b.header.UncleHash = CalcUncleHash(uncles)
b.uncles = make([]*Header, len(uncles))
for i := range uncles {
- b.uncles[i] = copyHeader(uncles[i])
+ b.uncles[i] = CopyHeader(uncles[i])
}
}
@@ -221,10 +221,12 @@ func NewBlock(header *Header, txs []*Transaction, uncles []*Header, receipts []*
// header data is copied, changes to header and to the field values
// will not affect the block.
func NewBlockWithHeader(header *Header) *Block {
- return &Block{header: copyHeader(header)}
+ return &Block{header: CopyHeader(header)}
}
-func copyHeader(h *Header) *Header {
+// CopyHeader creates a deep copy of a block header to prevent side effects from
+// modifying a header variable.
+func CopyHeader(h *Header) *Header {
cpy := *h
if cpy.Time = new(big.Int); h.Time != nil {
cpy.Time.Set(h.Time)
@@ -326,7 +328,7 @@ func (b *Block) ReceiptHash() common.Hash { return b.header.ReceiptHash }
func (b *Block) UncleHash() common.Hash { return b.header.UncleHash }
func (b *Block) Extra() []byte { return common.CopyBytes(b.header.Extra) }
-func (b *Block) Header() *Header { return copyHeader(b.header) }
+func (b *Block) Header() *Header { return CopyHeader(b.header) }
func (b *Block) HashNoNonce() common.Hash {
return b.header.HashNoNonce()
@@ -370,13 +372,13 @@ func (b *Block) WithMiningResult(nonce uint64, mixDigest common.Hash) *Block {
// WithBody returns a new block with the given transaction and uncle contents.
func (b *Block) WithBody(transactions []*Transaction, uncles []*Header) *Block {
block := &Block{
- header: copyHeader(b.header),
+ header: CopyHeader(b.header),
transactions: make([]*Transaction, len(transactions)),
uncles: make([]*Header, len(uncles)),
}
copy(block.transactions, transactions)
for i := range uncles {
- block.uncles[i] = copyHeader(uncles[i])
+ block.uncles[i] = CopyHeader(uncles[i])
}
return block
}
diff --git a/eth/backend.go b/eth/backend.go
index 04dd3767adfbd3ca49a82211090d28d669f6bfe4..f4acc76cb81223c424f04f21c7c821c37b58ae9e 100644
--- a/eth/backend.go
+++ b/eth/backend.go
@@ -464,7 +464,7 @@ func (s *Ethereum) NodeInfo() *NodeInfo {
DiscPort: int(node.UDP),
TCPPort: int(node.TCP),
ListenAddr: s.net.ListenAddr,
- Td: s.BlockChain().Td().String(),
+ Td: s.BlockChain().GetTd(s.BlockChain().CurrentBlock().Hash()).String(),
}
}
diff --git a/eth/handler.go b/eth/handler.go
index 5716350af61d54e5d2bddac7c7af662333eb80ef..021be1024abb7d77140ac281262568ec85007c5c 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -589,15 +589,6 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
}
request.Block.ReceivedAt = msg.ReceivedAt
- // Mark the block's arrival for whatever reason
- _, chainHead, _ := pm.blockchain.Status()
- jsonlogger.LogJson(&logger.EthChainReceivedNewBlock{
- BlockHash: request.Block.Hash().Hex(),
- BlockNumber: request.Block.Number(),
- ChainHeadHash: chainHead.Hex(),
- BlockPrevHash: request.Block.ParentHash().Hex(),
- RemoteId: p.ID().String(),
- })
// Mark the peer as owning the block and schedule it for import
p.MarkBlock(request.Block.Hash())
p.SetHead(request.Block.Hash())
@@ -607,7 +598,8 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
// Update the peers total difficulty if needed, schedule a download if gapped
if request.TD.Cmp(p.Td()) > 0 {
p.SetTd(request.TD)
- if request.TD.Cmp(new(big.Int).Add(pm.blockchain.Td(), request.Block.Difficulty())) > 0 {
+ td := pm.blockchain.GetTd(pm.blockchain.CurrentBlock().Hash())
+ if request.TD.Cmp(new(big.Int).Add(td, request.Block.Difficulty())) > 0 {
go pm.synchronise(p)
}
}
@@ -624,12 +616,6 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
return errResp(ErrDecode, "transaction %d is nil", i)
}
p.MarkTransaction(tx.Hash())
-
- // Log it's arrival for later analysis
- jsonlogger.LogJson(&logger.EthTxReceived{
- TxHash: tx.Hash().Hex(),
- RemoteId: p.ID().String(),
- })
}
pm.txpool.AddTransactions(txs)
diff --git a/eth/sync.go b/eth/sync.go
index 5a2031c68f186c1f0e01e2bb66f95782e0720a50..6295083e242c2638174f46ba6a3108f20b1d4312 100644
--- a/eth/sync.go
+++ b/eth/sync.go
@@ -160,7 +160,8 @@ func (pm *ProtocolManager) synchronise(peer *peer) {
return
}
// Make sure the peer's TD is higher than our own. If not drop.
- if peer.Td().Cmp(pm.blockchain.Td()) <= 0 {
+ td := pm.blockchain.GetTd(pm.blockchain.CurrentBlock().Hash())
+ if peer.Td().Cmp(td) <= 0 {
return
}
// Otherwise try to sync with the downloader
diff --git a/rpc/api/debug.go b/rpc/api/debug.go
index 003b4d9940392559abfbd20c89ac70d17c83d0ca..d2cbc7f19d6cb92df858c2bc66d5bff87e660d04 100644
--- a/rpc/api/debug.go
+++ b/rpc/api/debug.go
@@ -146,13 +146,7 @@ func (self *debugApi) SetHead(req *shared.Request) (interface{}, error) {
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
-
- block := self.xeth.EthBlockByNumber(args.BlockNumber)
- if block == nil {
- return nil, fmt.Errorf("block #%d not found", args.BlockNumber)
- }
-
- self.ethereum.BlockChain().SetHead(block)
+ self.ethereum.BlockChain().SetHead(uint64(args.BlockNumber))
return nil, nil
}