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Locks, refactor, tests

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* Added additional chain tests
* Added proper mutex' on chain
* Removed ethereum dependencies
This commit is contained in:
obscuren
2014-12-18 13:12:54 +01:00
parent 590aace88d
commit 49e0267fe7
12 changed files with 169 additions and 67 deletions
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115
core/chain_manager.go
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@ -3,6 +3,7 @@ package core
import (
"fmt"
"math/big"
"sync"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethutil"
@ -50,16 +51,36 @@ type ChainManager struct {
eventMux *event.TypeMux
genesisBlock *types.Block
// Last known total difficulty
TD *big.Int
LastBlockNumber uint64
CurrentBlock *types.Block
LastBlockHash []byte
mu sync.RWMutex
td *big.Int
lastBlockNumber uint64
currentBlock *types.Block
lastBlockHash []byte
transState *state.StateDB
}
func (self *ChainManager) Td() *big.Int {
self.mu.RLock()
defer self.mu.RUnlock()
return self.td
}
func (self *ChainManager) LastBlockNumber() uint64 {
self.mu.RLock()
defer self.mu.RUnlock()
return self.lastBlockNumber
}
func (self *ChainManager) CurrentBlock() *types.Block {
self.mu.RLock()
defer self.mu.RUnlock()
return self.currentBlock
}
func NewChainManager(mux *event.TypeMux) *ChainManager {
bc := &ChainManager{}
bc.genesisBlock = types.NewBlockFromBytes(ethutil.Encode(Genesis))
@ -77,7 +98,7 @@ func (self *ChainManager) SetProcessor(proc types.BlockProcessor) {
}
func (self *ChainManager) State() *state.StateDB {
return self.CurrentBlock.State()
return self.CurrentBlock().State()
}
func (self *ChainManager) TransState() *state.StateDB {
@ -91,27 +112,30 @@ func (bc *ChainManager) setLastBlock() {
AddTestNetFunds(bc.genesisBlock)
block := types.NewBlockFromBytes(data)
bc.CurrentBlock = block
bc.LastBlockHash = block.Hash()
bc.LastBlockNumber = block.Number.Uint64()
bc.currentBlock = block
bc.lastBlockHash = block.Hash()
bc.lastBlockNumber = block.Number.Uint64()
// Set the last know difficulty (might be 0x0 as initial value, Genesis)
bc.TD = ethutil.BigD(ethutil.Config.Db.LastKnownTD())
bc.td = ethutil.BigD(ethutil.Config.Db.LastKnownTD())
} else {
bc.Reset()
}
chainlogger.Infof("Last block (#%d) %x\n", bc.LastBlockNumber, bc.CurrentBlock.Hash())
chainlogger.Infof("Last block (#%d) %x\n", bc.lastBlockNumber, bc.currentBlock.Hash())
}
// Block creation & chain handling
func (bc *ChainManager) NewBlock(coinbase []byte) *types.Block {
bc.mu.RLock()
defer bc.mu.RUnlock()
var root interface{}
hash := ZeroHash256
if bc.CurrentBlock != nil {
root = bc.CurrentBlock.Root()
hash = bc.LastBlockHash
root = bc.currentBlock.Root()
hash = bc.lastBlockHash
}
block := types.CreateBlock(
@ -122,11 +146,11 @@ func (bc *ChainManager) NewBlock(coinbase []byte) *types.Block {
nil,
"")
parent := bc.CurrentBlock
parent := bc.currentBlock
if parent != nil {
block.Difficulty = CalcDifficulty(block, parent)
block.Number = new(big.Int).Add(bc.CurrentBlock.Number, ethutil.Big1)
block.GasLimit = block.CalcGasLimit(bc.CurrentBlock)
block.Number = new(big.Int).Add(bc.currentBlock.Number, ethutil.Big1)
block.GasLimit = block.CalcGasLimit(bc.currentBlock)
}
@ -134,35 +158,42 @@ func (bc *ChainManager) NewBlock(coinbase []byte) *types.Block {
}
func (bc *ChainManager) Reset() {
bc.mu.Lock()
defer bc.mu.Unlock()
AddTestNetFunds(bc.genesisBlock)
bc.genesisBlock.Trie().Sync()
// Prepare the genesis block
bc.write(bc.genesisBlock)
bc.insert(bc.genesisBlock)
bc.CurrentBlock = bc.genesisBlock
bc.currentBlock = bc.genesisBlock
bc.SetTotalDifficulty(ethutil.Big("0"))
bc.setTotalDifficulty(ethutil.Big("0"))
// Set the last know difficulty (might be 0x0 as initial value, Genesis)
bc.TD = ethutil.BigD(ethutil.Config.Db.LastKnownTD())
bc.td = ethutil.BigD(ethutil.Config.Db.LastKnownTD())
}
func (self *ChainManager) Export() []byte {
chainlogger.Infoln("exporting", self.CurrentBlock.Number, "blocks")
self.mu.RLock()
defer self.mu.RUnlock()
blocks := make(types.Blocks, int(self.CurrentBlock.Number.Int64())+1)
for block := self.CurrentBlock; block != nil; block = self.GetBlock(block.PrevHash) {
chainlogger.Infof("exporting %v blocks...\n", self.currentBlock.Number)
blocks := make([]*types.Block, int(self.currentBlock.Number.Int64())+1)
for block := self.currentBlock; block != nil; block = self.GetBlock(block.PrevHash) {
blocks[block.Number.Int64()] = block
}
return ethutil.Encode(blocks)
}
func (bc *ChainManager) insert(block *types.Block) {
encodedBlock := block.RlpEncode()
ethutil.Config.Db.Put([]byte("LastBlock"), encodedBlock)
bc.CurrentBlock = block
bc.LastBlockHash = block.Hash()
bc.currentBlock = block
bc.lastBlockHash = block.Hash()
}
func (bc *ChainManager) write(block *types.Block) {
@ -213,7 +244,10 @@ func (self *ChainManager) GetBlock(hash []byte) *types.Block {
}
func (self *ChainManager) GetBlockByNumber(num uint64) *types.Block {
block := self.CurrentBlock
self.mu.RLock()
defer self.mu.RUnlock()
block := self.currentBlock
for ; block != nil; block = self.GetBlock(block.PrevHash) {
if block.Number.Uint64() == num {
break
@ -227,9 +261,9 @@ func (self *ChainManager) GetBlockByNumber(num uint64) *types.Block {
return block
}
func (bc *ChainManager) SetTotalDifficulty(td *big.Int) {
func (bc *ChainManager) setTotalDifficulty(td *big.Int) {
ethutil.Config.Db.Put([]byte("LTD"), td.Bytes())
bc.TD = td
bc.td = td
}
func (self *ChainManager) CalcTotalDiff(block *types.Block) (*big.Int, error) {
@ -262,8 +296,8 @@ func (bc *ChainManager) BlockInfo(block *types.Block) types.BlockInfo {
// Unexported method for writing extra non-essential block info to the db
func (bc *ChainManager) writeBlockInfo(block *types.Block) {
bc.LastBlockNumber++
bi := types.BlockInfo{Number: bc.LastBlockNumber, Hash: block.Hash(), Parent: block.PrevHash, TD: bc.TD}
bc.lastBlockNumber++
bi := types.BlockInfo{Number: bc.lastBlockNumber, Hash: block.Hash(), Parent: block.PrevHash, TD: bc.td}
// For now we use the block hash with the words "info" appended as key
ethutil.Config.Db.Put(append(block.Hash(), []byte("Info")...), bi.RlpEncode())
@ -289,17 +323,22 @@ func (self *ChainManager) InsertChain(chain types.Blocks) error {
return err
}
self.write(block)
if td.Cmp(self.TD) > 0 {
if block.Number.Cmp(new(big.Int).Add(self.CurrentBlock.Number, ethutil.Big1)) < 0 {
chainlogger.Infof("Split detected. New head #%v (%x), was #%v (%x)\n", block.Number, block.Hash()[:4], self.CurrentBlock.Number, self.CurrentBlock.Hash()[:4])
self.mu.Lock()
{
self.write(block)
if td.Cmp(self.td) > 0 {
if block.Number.Cmp(new(big.Int).Add(self.currentBlock.Number, ethutil.Big1)) < 0 {
chainlogger.Infof("Split detected. New head #%v (%x), was #%v (%x)\n", block.Number, block.Hash()[:4], self.currentBlock.Number, self.currentBlock.Hash()[:4])
}
self.setTotalDifficulty(td)
self.insert(block)
self.transState = self.currentBlock.State().Copy()
}
self.SetTotalDifficulty(td)
self.insert(block)
self.transState = self.State().Copy()
//sm.eth.TxPool().RemoveSet(block.Transactions())
}
self.mu.Unlock()
self.eventMux.Post(NewBlockEvent{block})
self.eventMux.Post(messages)