Golang state.ManageState函數代碼示例

func (pool *TxPool) resetState() {
	currentState, err := pool.currentState()
	if err != nil {
		glog.V(logger.Info).Infoln("failed to get current state: %v", err)
		return
	}
	managedState := state.ManageState(currentState)
	if err != nil {
		glog.V(logger.Info).Infoln("failed to get managed state: %v", err)
		return
	}
	pool.pendingState = managedState

	// validate the pool of pending transactions, this will remove
	// any transactions that have been included in the block or
	// have been invalidated because of another transaction (e.g.
	// higher gas price)
	pool.validatePool()

	// Loop over the pending transactions and base the nonce of the new
	// pending transaction set.
	for _, tx := range pool.pending {
		if addr, err := tx.From(); err == nil {
			// Set the nonce. Transaction nonce can never be lower
			// than the state nonce; validatePool took care of that.
			if pool.pendingState.GetNonce(addr) <= tx.Nonce() {
				pool.pendingState.SetNonce(addr, tx.Nonce()+1)
			}
		}
	}

	// Check the queue and move transactions over to the pending if possible
	// or remove those that have become invalid
	pool.checkQueue()
}

func (pool *TxPool) resetState() {
	pool.pendingState = state.ManageState(pool.currentState())

	// validate the pool of pending transactions, this will remove
	// any transactions that have been included in the block or
	// have been invalidated because of another transaction (e.g.
	// higher gas price)
	pool.validatePool()

	// Loop over the pending transactions and base the nonce of the new
	// pending transaction set.
	for _, tx := range pool.pending {
		if addr, err := tx.From(); err == nil {
			// Set the nonce. Transaction nonce can never be lower
			// than the state nonce; validatePool took care of that.
			if pool.pendingState.GetNonce(addr) < tx.Nonce() {
				pool.pendingState.SetNonce(addr, tx.Nonce())
			}
		}
	}

	// Check the queue and move transactions over to the pending if possible
	// or remove those that have become invalid
	pool.checkQueue()
}

// Equivalent of the tx-pool state; updated by CheckTx and replaced on commit
// For now, we just return the last block state
func (app *EthereumApplication) ManagedState() *state.ManagedState {
	st, err := state.New(app.StateRoot(), app.ethereum.ChainDb())
	if err != nil {
		return nil // (?!)
	}
	return state.ManageState(st)
}

func chm(genesis *types.Block, db common.Database) *ChainManager {
	var eventMux event.TypeMux
	bc := &ChainManager{blockDb: db, stateDb: db, genesisBlock: genesis, eventMux: &eventMux}
	bc.cache = NewBlockCache(100)
	bc.futureBlocks = NewBlockCache(100)
	bc.processor = bproc{}
	bc.ResetWithGenesisBlock(genesis)
	bc.txState = state.ManageState(bc.State())

	return bc
}

func chm(genesis *types.Block, db common.Database) *ChainManager {
	var eventMux event.TypeMux
	bc := &ChainManager{extraDb: db, blockDb: db, stateDb: db, genesisBlock: genesis, eventMux: &eventMux, pow: FakePow{}}
	bc.cache, _ = lru.New(100)
	bc.futureBlocks, _ = lru.New(100)
	bc.processor = bproc{}
	bc.ResetWithGenesisBlock(genesis)
	bc.txState = state.ManageState(bc.State())

	return bc
}

// Create a new chain manager starting from given block
// Effectively a fork factory
func newChainManager(block *types.Block, eventMux *event.TypeMux, db common.Database) *ChainManager {
	genesis := GenesisBlock(db)
	bc := &ChainManager{blockDb: db, stateDb: db, genesisBlock: genesis, eventMux: eventMux}
	bc.txState = state.ManageState(state.New(genesis.Root(), db))
	bc.futureBlocks = NewBlockCache(1000)
	if block == nil {
		bc.Reset()
	} else {
		bc.currentBlock = block
		bc.td = block.Td
	}
	return bc
}

func NewTxPool(eventMux *event.TypeMux, currentStateFn stateFn, gasLimitFn func() *big.Int) *TxPool {
	pool := &TxPool{
		pending:      make(map[common.Hash]*types.Transaction),
		queue:        make(map[common.Address]map[common.Hash]*types.Transaction),
		quit:         make(chan bool),
		eventMux:     eventMux,
		currentState: currentStateFn,
		gasLimit:     gasLimitFn,
		minGasPrice:  new(big.Int),
		pendingState: state.ManageState(currentStateFn()),
		events:       eventMux.Subscribe(ChainHeadEvent{}, GasPriceChanged{}),
	}
	go pool.eventLoop()

	return pool
}

func NewChainManager(blockDb, stateDb, extraDb common.Database, pow pow.PoW, mux *event.TypeMux) (*ChainManager, error) {
	cache, _ := lru.New(blockCacheLimit)
	bc := &ChainManager{
		blockDb:  blockDb,
		stateDb:  stateDb,
		extraDb:  extraDb,
		eventMux: mux,
		quit:     make(chan struct{}),
		cache:    cache,
		pow:      pow,
	}

	bc.genesisBlock = bc.GetBlockByNumber(0)
	if bc.genesisBlock == nil {
		return nil, ErrNoGenesis
	}

	if err := bc.setLastState(); 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")
		}
	}

	bc.transState = bc.State().Copy()
	// Take ownership of this particular state
	bc.txState = state.ManageState(bc.State().Copy())

	bc.futureBlocks, _ = lru.New(maxFutureBlocks)
	bc.makeCache()

	go bc.update()

	return bc, nil
}

func NewChainManager(genesis *types.Block, blockDb, stateDb, extraDb common.Database, pow pow.PoW, mux *event.TypeMux) (*ChainManager, error) {
	cache, _ := lru.New(blockCacheLimit)
	bc := &ChainManager{
		blockDb:      blockDb,
		stateDb:      stateDb,
		extraDb:      extraDb,
		genesisBlock: GenesisBlock(42, stateDb),
		eventMux:     mux,
		quit:         make(chan struct{}),
		cache:        cache,
		pow:          pow,
	}
	// Check the genesis block given to the chain manager. If the genesis block mismatches block number 0
	// throw an error. If no block or the same block's found continue.
	if g := bc.GetBlockByNumber(0); g != nil && g.Hash() != genesis.Hash() {
		return nil, fmt.Errorf("Genesis mismatch. Maybe different nonce (%d vs %d)? %x / %x", g.Nonce(), genesis.Nonce(), g.Hash().Bytes()[:4], genesis.Hash().Bytes()[:4])
	}
	bc.genesisBlock = genesis
	bc.setLastState()

	// 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")
		}
	}

	bc.transState = bc.State().Copy()
	// Take ownership of this particular state
	bc.txState = state.ManageState(bc.State().Copy())

	bc.futureBlocks, _ = lru.New(maxFutureBlocks)
	bc.makeCache()

	go bc.update()

	return bc, nil
}

func (bc *ChainManager) SetHead(head *types.Block) {
	bc.mu.Lock()
	defer bc.mu.Unlock()

	for block := bc.currentBlock; block != nil && block.Hash() != head.Hash(); block = bc.GetBlock(block.Header().ParentHash) {
		bc.removeBlock(block)
	}

	bc.cache = NewBlockCache(blockCacheLimit)
	bc.currentBlock = head
	bc.makeCache()

	statedb := state.New(head.Root(), bc.stateDb)
	bc.txState = state.ManageState(statedb)
	bc.transState = statedb.Copy()
	bc.setTotalDifficulty(head.Td)
	bc.insert(head)
	bc.setLastState()
}

func NewChainManager(blockDb, stateDb common.Database, mux *event.TypeMux) *ChainManager {
	bc := &ChainManager{
		blockDb:      blockDb,
		stateDb:      stateDb,
		genesisBlock: GenesisBlock(stateDb),
		eventMux:     mux,
		quit:         make(chan struct{}),
		cache:        NewBlockCache(blockCacheLimit),
	}
	bc.setLastState()

	// 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")
		}
	}

	bc.transState = bc.State().Copy()
	// Take ownership of this particular state
	bc.txState = state.ManageState(bc.State().Copy())

	bc.futureBlocks = NewBlockCache(maxFutureBlocks)
	bc.makeCache()

	go bc.update()

	return bc
}

func (self *ChainManager) setTxState(statedb *state.StateDB) {
	self.tsmu.Lock()
	defer self.tsmu.Unlock()
	self.txState = state.ManageState(statedb)
}