Renamed `chain` => `core`

1 files changed, 0 insertions, 414 deletions

diff --git a/chain/block_manager.go b/chain/block_manager.go
deleted file mode 100644
index eda8a5a0c..000000000
--- a/chain/block_manager.go
+++ /dev/null
@@ -1,414 +0,0 @@
-package chain
-
-import (
-	"bytes"
-	"container/list"
-	"errors"
-	"fmt"
-	"math/big"
-	"sync"
-	"time"
-
-	"github.com/ethereum/go-ethereum/chain/types"
-	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/ethereum/go-ethereum/ethutil"
-	"github.com/ethereum/go-ethereum/event"
-	"github.com/ethereum/go-ethereum/logger"
-	"github.com/ethereum/go-ethereum/state"
-	"github.com/ethereum/go-ethereum/wire"
-)
-
-var statelogger = logger.NewLogger("BLOCK")
-
-type Peer interface {
-	Inbound() bool
-	LastSend() time.Time
-	LastPong() int64
-	Host() []byte
-	Port() uint16
-	Version() string
-	PingTime() string
-	Connected() *int32
-	Caps() *ethutil.Value
-}
-
-type EthManager interface {
-	BlockManager() *BlockManager
-	ChainManager() *ChainManager
-	TxPool() *TxPool
-	Broadcast(msgType wire.MsgType, data []interface{})
-	PeerCount() int
-	IsMining() bool
-	IsListening() bool
-	Peers() *list.List
-	KeyManager() *crypto.KeyManager
-	ClientIdentity() wire.ClientIdentity
-	Db() ethutil.Database
-	EventMux() *event.TypeMux
-}
-
-type BlockManager struct {
-	// Mutex for locking the block processor. Blocks can only be handled one at a time
-	mutex sync.Mutex
-	// Canonical block chain
-	bc *ChainManager
-	// non-persistent key/value memory storage
-	mem map[string]*big.Int
-	// Proof of work used for validating
-	Pow PoW
-	// The ethereum manager interface
-	eth EthManager
-	// The managed states
-	// Transiently state. The trans state isn't ever saved, validated and
-	// it could be used for setting account nonces without effecting
-	// the main states.
-	transState *state.State
-	// Mining state. The mining state is used purely and solely by the mining
-	// operation.
-	miningState *state.State
-
-	// The last attempted block is mainly used for debugging purposes
-	// This does not have to be a valid block and will be set during
-	// 'Process' & canonical validation.
-	lastAttemptedBlock *types.Block
-
-	events event.Subscription
-}
-
-func NewBlockManager(ethereum EthManager) *BlockManager {
-	sm := &BlockManager{
-		mem: make(map[string]*big.Int),
-		Pow: &EasyPow{},
-		eth: ethereum,
-		bc:  ethereum.ChainManager(),
-	}
-	sm.transState = ethereum.ChainManager().CurrentBlock.State().Copy()
-	sm.miningState = ethereum.ChainManager().CurrentBlock.State().Copy()
-
-	return sm
-}
-
-func (self *BlockManager) Start() {
-	statelogger.Debugln("Starting block manager")
-}
-
-func (self *BlockManager) Stop() {
-	statelogger.Debugln("Stopping state manager")
-}
-
-func (sm *BlockManager) CurrentState() *state.State {
-	return sm.eth.ChainManager().CurrentBlock.State()
-}
-
-func (sm *BlockManager) TransState() *state.State {
-	return sm.transState
-}
-
-func (sm *BlockManager) MiningState() *state.State {
-	return sm.miningState
-}
-
-func (sm *BlockManager) NewMiningState() *state.State {
-	sm.miningState = sm.eth.ChainManager().CurrentBlock.State().Copy()
-
-	return sm.miningState
-}
-
-func (sm *BlockManager) ChainManager() *ChainManager {
-	return sm.bc
-}
-
-func (sm *BlockManager) TransitionState(statedb *state.State, parent, block *types.Block) (receipts types.Receipts, err error) {
-	coinbase := statedb.GetOrNewStateObject(block.Coinbase)
-	coinbase.SetGasPool(block.CalcGasLimit(parent))
-
-	// Process the transactions on to current block
-	receipts, _, _, _, err = sm.ProcessTransactions(coinbase, statedb, block, parent, block.Transactions())
-	if err != nil {
-		return nil, err
-	}
-
-	return receipts, nil
-}
-
-func (self *BlockManager) ProcessTransactions(coinbase *state.StateObject, state *state.State, block, parent *types.Block, txs types.Transactions) (types.Receipts, types.Transactions, types.Transactions, types.Transactions, error) {
-	var (
-		receipts           types.Receipts
-		handled, unhandled types.Transactions
-		erroneous          types.Transactions
-		totalUsedGas       = big.NewInt(0)
-		err                error
-		cumulativeSum      = new(big.Int)
-	)
-
-done:
-	for i, tx := range txs {
-		// If we are mining this block and validating we want to set the logs back to 0
-		state.EmptyLogs()
-
-		txGas := new(big.Int).Set(tx.Gas)
-
-		cb := state.GetStateObject(coinbase.Address())
-		st := NewStateTransition(cb, tx, state, block)
-		err = st.TransitionState()
-		if err != nil {
-			statelogger.Infoln(err)
-			switch {
-			case IsNonceErr(err):
-				err = nil // ignore error
-				continue
-			case IsGasLimitErr(err):
-				unhandled = txs[i:]
-
-				break done
-			default:
-				statelogger.Infoln(err)
-				erroneous = append(erroneous, tx)
-				err = nil
-				continue
-			}
-		}
-
-		txGas.Sub(txGas, st.gas)
-		cumulativeSum.Add(cumulativeSum, new(big.Int).Mul(txGas, tx.GasPrice))
-
-		// Update the state with pending changes
-		state.Update(txGas)
-
-		cumulative := new(big.Int).Set(totalUsedGas.Add(totalUsedGas, txGas))
-		receipt := types.NewReceipt(state.Root(), cumulative)
-		receipt.SetLogs(state.Logs())
-		receipt.Bloom = types.CreateBloom(types.Receipts{receipt})
-
-		// Notify all subscribers
-		go self.eth.EventMux().Post(TxPostEvent{tx})
-
-		receipts = append(receipts, receipt)
-		handled = append(handled, tx)
-
-		if ethutil.Config.Diff && ethutil.Config.DiffType == "all" {
-			state.CreateOutputForDiff()
-		}
-	}
-
-	block.Reward = cumulativeSum
-	block.GasUsed = totalUsedGas
-
-	return receipts, handled, unhandled, erroneous, err
-}
-
-func (sm *BlockManager) Process(block *types.Block) (td *big.Int, msgs state.Messages, err error) {
-	// Processing a blocks may never happen simultaneously
-	sm.mutex.Lock()
-	defer sm.mutex.Unlock()
-
-	if sm.bc.HasBlock(block.Hash()) {
-		return nil, nil, &KnownBlockError{block.Number, block.Hash()}
-	}
-
-	if !sm.bc.HasBlock(block.PrevHash) {
-		return nil, nil, ParentError(block.PrevHash)
-	}
-	parent := sm.bc.GetBlock(block.PrevHash)
-
-	return sm.ProcessWithParent(block, parent)
-}
-
-func (sm *BlockManager) ProcessWithParent(block, parent *types.Block) (td *big.Int, messages state.Messages, err error) {
-	sm.lastAttemptedBlock = block
-
-	state := parent.State().Copy()
-
-	// Defer the Undo on the Trie. If the block processing happened
-	// we don't want to undo but since undo only happens on dirty
-	// nodes this won't happen because Commit would have been called
-	// before that.
-	defer state.Reset()
-
-	if ethutil.Config.Diff && ethutil.Config.DiffType == "all" {
-		fmt.Printf("## %x %x ##\n", block.Hash(), block.Number)
-	}
-
-	_, err = sm.TransitionState(state, parent, block)
-	if err != nil {
-		return
-	}
-
-	txSha := types.DeriveSha(block.Transactions())
-	if bytes.Compare(txSha, block.TxSha) != 0 {
-		err = fmt.Errorf("validating transaction root. received=%x got=%x", block.TxSha, txSha)
-		return
-	}
-
-	/*
-		receiptSha := types.DeriveSha(receipts)
-		if bytes.Compare(receiptSha, block.ReceiptSha) != 0 {
-			err = fmt.Errorf("validating receipt root. received=%x got=%x", block.ReceiptSha, receiptSha)
-			return
-		}
-	*/
-
-	// Block validation
-	if err = sm.ValidateBlock(block, parent); err != nil {
-		return
-	}
-
-	if err = sm.AccumelateRewards(state, block, parent); err != nil {
-		return
-	}
-
-	/*
-		//block.receipts = receipts // although this isn't necessary it be in the future
-		rbloom := types.CreateBloom(receipts)
-		if bytes.Compare(rbloom, block.LogsBloom) != 0 {
-			err = fmt.Errorf("unable to replicate block's bloom=%x", rbloom)
-			return
-		}
-	*/
-
-	state.Update(ethutil.Big0)
-
-	if !block.State().Cmp(state) {
-		err = fmt.Errorf("invalid merkle root. received=%x got=%x", block.Root(), state.Root())
-		return
-	}
-
-	// Calculate the new total difficulty and sync back to the db
-	if td, ok := sm.CalculateTD(block); ok {
-		// Sync the current block's state to the database and cancelling out the deferred Undo
-		state.Sync()
-
-		messages := state.Manifest().Messages
-		state.Manifest().Reset()
-
-		chainlogger.Infof("Processed block #%d (%x...)\n", block.Number, block.Hash()[0:4])
-
-		sm.transState = state.Copy()
-
-		sm.eth.TxPool().RemoveSet(block.Transactions())
-
-		return td, messages, nil
-	} else {
-		return nil, nil, errors.New("total diff failed")
-	}
-}
-
-func (sm *BlockManager) CalculateTD(block *types.Block) (*big.Int, bool) {
-	uncleDiff := new(big.Int)
-	for _, uncle := range block.Uncles {
-		uncleDiff = uncleDiff.Add(uncleDiff, uncle.Difficulty)
-	}
-
-	// TD(genesis_block) = 0 and TD(B) = TD(B.parent) + sum(u.difficulty for u in B.uncles) + B.difficulty
-	td := new(big.Int)
-	td = td.Add(sm.bc.TD, uncleDiff)
-	td = td.Add(td, block.Difficulty)
-
-	// The new TD will only be accepted if the new difficulty is
-	// is greater than the previous.
-	if td.Cmp(sm.bc.TD) > 0 {
-		return td, true
-	}
-
-	return nil, false
-}
-
-// Validates the current block. Returns an error if the block was invalid,
-// an uncle or anything that isn't on the current block chain.
-// Validation validates easy over difficult (dagger takes longer time = difficult)
-func (sm *BlockManager) ValidateBlock(block, parent *types.Block) error {
-	expd := CalcDifficulty(block, parent)
-	if expd.Cmp(block.Difficulty) < 0 {
-		return fmt.Errorf("Difficulty check failed for block %v, %v", block.Difficulty, expd)
-	}
-
-	diff := block.Time - parent.Time
-	if diff < 0 {
-		return ValidationError("Block timestamp less then prev block %v (%v - %v)", diff, block.Time, sm.bc.CurrentBlock.Time)
-	}
-
-	/* XXX
-	// New blocks must be within the 15 minute range of the last block.
-	if diff > int64(15*time.Minute) {
-		return ValidationError("Block is too far in the future of last block (> 15 minutes)")
-	}
-	*/
-
-	// Verify the nonce of the block. Return an error if it's not valid
-	if !sm.Pow.Verify(block.HashNoNonce(), block.Difficulty, block.Nonce) {
-		return ValidationError("Block's nonce is invalid (= %v)", ethutil.Bytes2Hex(block.Nonce))
-	}
-
-	return nil
-}
-
-func (sm *BlockManager) AccumelateRewards(statedb *state.State, block, parent *types.Block) error {
-	reward := new(big.Int).Set(BlockReward)
-
-	knownUncles := ethutil.Set(parent.Uncles)
-	nonces := ethutil.NewSet(block.Nonce)
-	for _, uncle := range block.Uncles {
-		if nonces.Include(uncle.Nonce) {
-			// Error not unique
-			return UncleError("Uncle not unique")
-		}
-
-		uncleParent := sm.bc.GetBlock(uncle.PrevHash)
-		if uncleParent == nil {
-			return UncleError(fmt.Sprintf("Uncle's parent unknown (%x)", uncle.PrevHash[0:4]))
-		}
-
-		if uncleParent.Number.Cmp(new(big.Int).Sub(parent.Number, big.NewInt(6))) < 0 {
-			return UncleError("Uncle too old")
-		}
-
-		if knownUncles.Include(uncle.Hash()) {
-			return UncleError("Uncle in chain")
-		}
-
-		nonces.Insert(uncle.Nonce)
-
-		r := new(big.Int)
-		r.Mul(BlockReward, big.NewInt(15)).Div(r, big.NewInt(16))
-
-		uncleAccount := statedb.GetAccount(uncle.Coinbase)
-		uncleAccount.AddAmount(r)
-
-		reward.Add(reward, new(big.Int).Div(BlockReward, big.NewInt(32)))
-	}
-
-	// Get the account associated with the coinbase
-	account := statedb.GetAccount(block.Coinbase)
-	// Reward amount of ether to the coinbase address
-	account.AddAmount(reward)
-
-	statedb.Manifest().AddMessage(&state.Message{
-		To: block.Coinbase, From: block.Coinbase,
-		Input:  nil,
-		Origin: nil,
-		Block:  block.Hash(), Timestamp: block.Time, Coinbase: block.Coinbase, Number: block.Number,
-		Value: new(big.Int).Add(reward, block.Reward),
-	})
-
-	return nil
-}
-
-func (sm *BlockManager) GetMessages(block *types.Block) (messages []*state.Message, err error) {
-	if !sm.bc.HasBlock(block.PrevHash) {
-		return nil, ParentError(block.PrevHash)
-	}
-
-	sm.lastAttemptedBlock = block
-
-	var (
-		parent = sm.bc.GetBlock(block.PrevHash)
-		state  = parent.State().Copy()
-	)
-
-	defer state.Reset()
-
-	sm.TransitionState(state, parent, block)
-	sm.AccumelateRewards(state, block, parent)
-
-	return state.Manifest().Messages, nil
-}