// reportBlock reports the given block and error using the canonical block
// reporting tool. Reporting the block to the service is handled in a separate
// goroutine.
func reportBlock(block *types.Block, err error) {
if glog.V(logger.Error) {
glog.Errorf("Bad block #%v (%s)\n", block.Number(), block.Hash().Hex())
glog.Errorf(" %v", err)
}
go ReportBlock(block, err)
}
// Get returns the value for key stored in the trie.
// The value bytes must not be modified by the caller.
func (t *Trie) Get(key []byte) []byte {
res, err := t.TryGet(key)
if err != nil && glog.V(logger.Error) {
glog.Errorf("Unhandled trie error: %v", err)
}
return res
}
func (self *Iterator) key(node interface{}) []byte {
switch node := node.(type) {
case shortNode:
// Leaf node
k := remTerm(node.Key)
if vnode, ok := node.Val.(valueNode); ok {
self.Value = vnode
return k
}
return append(k, self.key(node.Val)...)
case fullNode:
if node[16] != nil {
self.Value = node[16].(valueNode)
return []byte{16}
}
for i := 0; i < 16; i++ {
k := self.key(node[i])
if k != nil {
return append([]byte{byte(i)}, k...)
}
}
case hashNode:
rn, err := self.trie.resolveHash(node, nil, nil)
if err != nil && glog.V(logger.Error) {
glog.Errorf("Unhandled trie error: %v", err)
}
return self.key(rn)
}
return nil
}
// Prove constructs a merkle proof for key. The result contains all
// encoded nodes on the path to the value at key. The value itself is
// also included in the last node and can be retrieved by verifying
// the proof.
//
// If the trie does not contain a value for key, the returned proof
// contains all nodes of the longest existing prefix of the key
// (at least the root node), ending with the node that proves the
// absence of the key.
func (t *Trie) Prove(key []byte) []rlp.RawValue {
// Collect all nodes on the path to key.
key = compactHexDecode(key)
nodes := []node{}
tn := t.root
for len(key) > 0 && tn != nil {
switch n := tn.(type) {
case shortNode:
if len(key) < len(n.Key) || !bytes.Equal(n.Key, key[:len(n.Key)]) {
// The trie doesn't contain the key.
tn = nil
} else {
tn = n.Val
key = key[len(n.Key):]
}
nodes = append(nodes, n)
case fullNode:
tn = n[key[0]]
key = key[1:]
nodes = append(nodes, n)
case hashNode:
var err error
tn, err = t.resolveHash(n, nil, nil)
if err != nil {
if glog.V(logger.Error) {
glog.Errorf("Unhandled trie error: %v", err)
}
return nil
}
default:
panic(fmt.Sprintf("%T: invalid node: %v", tn, tn))
}
}
if t.hasher == nil {
t.hasher = newHasher()
}
proof := make([]rlp.RawValue, 0, len(nodes))
for i, n := range nodes {
// Don't bother checking for errors here since hasher panics
// if encoding doesn't work and we're not writing to any database.
n, _ = t.hasher.replaceChildren(n, nil)
hn, _ := t.hasher.store(n, nil, false)
if _, ok := hn.(hashNode); ok || i == 0 {
// If the node's database encoding is a hash (or is the
// root node), it becomes a proof element.
enc, _ := rlp.EncodeToBytes(n)
proof = append(proof, enc)
}
}
return proof
}
// reads the next node record from the iterator, skipping over other
// database entries.
func nextNode(it iterator.Iterator) *Node {
for end := false; !end; end = !it.Next() {
id, field := splitKey(it.Key())
if field != nodeDBDiscoverRoot {
continue
}
var n Node
if err := rlp.DecodeBytes(it.Value(), &n); err != nil {
if glog.V(logger.Warn) {
glog.Errorf("invalid node %x: %v", id, err)
}
continue
}
return &n
}
return nil
}
func (self *LDBDatabase) Close() {
// Stop the metrics collection to avoid internal database races
self.quitLock.Lock()
defer self.quitLock.Unlock()
if self.quitChan != nil {
errc := make(chan error)
self.quitChan <- errc
if err := <-errc; err != nil {
glog.V(logger.Error).Infof("metrics failure in '%s': %v\n", self.fn, err)
}
}
err := self.db.Close()
if glog.V(logger.Error) {
if err == nil {
glog.Infoln("closed db:", self.fn)
} else {
glog.Errorf("error closing db %s: %v", self.fn, err)
}
}
}
// Retrieve a state object given my the address. Nil if not found
func (self *StateDB) GetStateObject(addr common.Address) (stateObject *StateObject) {
stateObject = self.stateObjects[addr.Str()]
if stateObject != nil {
if stateObject.deleted {
stateObject = nil
}
return stateObject
}
data := self.trie.Get(addr[:])
if len(data) == 0 {
return nil
}
stateObject, err := DecodeObject(addr, self.db, data)
if err != nil {
glog.Errorf("can't decode object at %x: %v", addr[:], err)
return nil
}
self.SetStateObject(stateObject)
return stateObject
}
// Delete removes any existing value for key from the trie.
func (t *Trie) Delete(key []byte) {
if err := t.TryDelete(key); err != nil && glog.V(logger.Error) {
glog.Errorf("Unhandled trie error: %v", err)
}
}
// Update associates key with value in the trie. Subsequent calls to
// Get will return value. If value has length zero, any existing value
// is deleted from the trie and calls to Get will return nil.
//
// The value bytes must not be modified by the caller while they are
// stored in the trie.
func (t *Trie) Update(key, value []byte) {
if err := t.TryUpdate(key, value); err != nil && glog.V(logger.Error) {
glog.Errorf("Unhandled trie error: %v", err)
}
}
func (self *Iterator) next(node interface{}, key []byte, isIterStart bool) []byte {
if node == nil {
return nil
}
switch node := node.(type) {
case fullNode:
if len(key) > 0 {
k := self.next(node[key[0]], key[1:], isIterStart)
if k != nil {
return append([]byte{key[0]}, k...)
}
}
var r byte
if len(key) > 0 {
r = key[0] + 1
}
for i := r; i < 16; i++ {
k := self.key(node[i])
if k != nil {
return append([]byte{i}, k...)
}
}
case shortNode:
k := remTerm(node.Key)
if vnode, ok := node.Val.(valueNode); ok {
switch bytes.Compare([]byte(k), key) {
case 0:
if isIterStart {
self.Value = vnode
return k
}
case 1:
self.Value = vnode
return k
}
} else {
cnode := node.Val
var ret []byte
skey := key[len(k):]
if bytes.HasPrefix(key, k) {
ret = self.next(cnode, skey, isIterStart)
} else if bytes.Compare(k, key[:len(k)]) > 0 {
return self.key(node)
}
if ret != nil {
return append(k, ret...)
}
}
case hashNode:
rn, err := self.trie.resolveHash(node, nil, nil)
if err != nil && glog.V(logger.Error) {
glog.Errorf("Unhandled trie error: %v", err)
}
return self.next(rn, key, isIterStart)
}
return nil
}
// checkQueue moves transactions that have become processable to main pool.
func (pool *TxPool) checkQueue() {
// init delayed since tx pool could have been started before any state sync
if pool.pendingState == nil {
pool.resetState()
}
var promote txQueue
for address, txs := range pool.queue {
currentState, err := pool.currentState()
if err != nil {
glog.Errorf("could not get current state: %v", err)
return
}
balance := currentState.GetBalance(address)
var (
guessedNonce = pool.pendingState.GetNonce(address) // nonce currently kept by the tx pool (pending state)
trueNonce = currentState.GetNonce(address) // nonce known by the last state
)
promote = promote[:0]
for hash, tx := range txs {
// Drop processed or out of fund transactions
if tx.Nonce() < trueNonce || balance.Cmp(tx.Cost()) < 0 {
if glog.V(logger.Core) {
glog.Infof("removed tx (%v) from pool queue: low tx nonce or out of funds\n", tx)
}
delete(txs, hash)
continue
}
// Collect the remaining transactions for the next pass.
promote = append(promote, txQueueEntry{hash, address, tx})
}
// Find the next consecutive nonce range starting at the current account nonce,
// pushing the guessed nonce forward if we add consecutive transactions.
sort.Sort(promote)
for i, entry := range promote {
// If we reached a gap in the nonces, enforce transaction limit and stop
if entry.Nonce() > guessedNonce {
if len(promote)-i > maxQueued {
if glog.V(logger.Debug) {
glog.Infof("Queued tx limit exceeded for %s. Tx %s removed\n", common.PP(address[:]), common.PP(entry.hash[:]))
}
for _, drop := range promote[i+maxQueued:] {
delete(txs, drop.hash)
}
}
break
}
// Otherwise promote the transaction and move the guess nonce if needed
pool.addTx(entry.hash, address, entry.Transaction)
delete(txs, entry.hash)
if entry.Nonce() == guessedNonce {
guessedNonce++
}
}
// Delete the entire queue entry if it became empty.
if len(txs) == 0 {
delete(pool.queue, address)
}
}
}
