state: ApplyBlock

consensus/race.test

@@ -0,0 +1 @@
+ok  	github.com/tendermint/tendermint/consensus	5.928s

consensus/state.go

@@ -1265,21 +1265,9 @@ func (cs *ConsensusState) finalizeCommit(height int) {
 	// event cache for txs
 	eventCache := types.NewEventCache(cs.evsw)
 
-	// Run the block on the State:
-	// + update validator sets
-	// + run txs on the proxyAppConn
-	err := stateCopy.ExecBlock(eventCache, cs.proxyAppConn, block, blockParts.Header())
-	if err != nil {
-		// TODO: handle this gracefully.
-		PanicQ(Fmt("Exec failed for application: %v", err))
-	}
-
-	// lock mempool, commit state, update mempoool
-	err = cs.commitStateUpdateMempool(stateCopy, block)
-	if err != nil {
-		// TODO: handle this gracefully.
-		PanicQ(Fmt("Commit failed for application: %v", err))
-	}
+	// Execute and commit the block
+	// NOTE: All calls to the proxyAppConn should come here
+	stateCopy.ApplyBlock(eventCache, cs.proxyAppConn, block, blockParts.Header(), cs.mempool)
 
 	// txs committed, bad ones removed from mepool; fire events
 	// NOTE: the block.AppHash wont reflect these txs until the next block
@@ -1309,32 +1297,6 @@ func (cs *ConsensusState) finalizeCommit(height int) {
 	return
 }
 
-// mempool must be locked during commit and update
-// because state is typically reset on Commit and old txs must be replayed
-// against committed state before new txs are run in the mempool, lest they be invalid
-func (cs *ConsensusState) commitStateUpdateMempool(s *sm.State, block *types.Block) error {
-	cs.mempool.Lock()
-	defer cs.mempool.Unlock()
-
-	// Commit block, get hash back
-	res := cs.proxyAppConn.CommitSync()
-	if res.IsErr() {
-		log.Warn("Error in proxyAppConn.CommitSync", "error", res)
-		return res
-	}
-	if res.Log != "" {
-		log.Debug("Commit.Log: " + res.Log)
-	}
-
-	// Set the state's new AppHash
-	s.AppHash = res.Data
-
-	// Update mempool.
-	cs.mempool.Update(block.Height, block.Txs)
-
-	return nil
-}
-
 //-----------------------------------------------------------------------------
 
 func (cs *ConsensusState) defaultSetProposal(proposal *types.Proposal) error {

node/node.go

@@ -60,7 +60,7 @@ func NewNode(config cfg.Config, privValidator *types.PrivValidator, clientCreato
 	stateDB := dbm.NewDB("state", config.GetString("db_backend"), config.GetString("db_dir"))
 
 	// Get State
-	state := getState(config, stateDB)
+	state := sm.GetState(config, stateDB)
 
 	// Create the proxyApp, which manages connections (consensus, mempool, query)
 	proxyApp := proxy.NewAppConns(config, clientCreator, state, blockStore)
@@ -295,17 +295,6 @@ func makeNodeInfo(config cfg.Config, sw *p2p.Switch, privKey crypto.PrivKeyEd255
 	return nodeInfo
 }
 
-// Load the most recent state from "state" db,
-// or create a new one (and save) from genesis.
-func getState(config cfg.Config, stateDB dbm.DB) *sm.State {
-	state := sm.LoadState(stateDB)
-	if state == nil {
-		state = sm.MakeGenesisStateFromFile(stateDB, config.GetString("genesis_file"))
-		state.Save()
-	}
-	return state
-}
-
 //------------------------------------------------------------------------------
 
 // Users wishing to:

proxy/multi_app_conn.go

@@ -28,6 +28,9 @@ func NewAppConns(config cfg.Config, clientCreator ClientCreator, state State, bl
 	return NewMultiAppConn(config, clientCreator, state, blockStore)
 }
 
+//-----------------------------
+// multiAppConn implements AppConns
+
 // a multiAppConn is made of a few appConns (mempool, consensus, query)
 // and manages their underlying tmsp clients, including the handshake
 // which ensures the app and tendermint are synced.
@@ -103,8 +106,9 @@ func (app *multiAppConn) OnStart() error {
 }
 
 // TODO: retry the handshake once if it fails the first time
+// ... let Info take an argument determining its behaviour
 func (app *multiAppConn) Handshake() error {
-	// handshake is done on the query conn
+	// handshake is done via info request on the query conn
 	res, tmspInfo, blockInfo, configInfo := app.queryConn.InfoSync()
 	if res.IsErr() {
 		return fmt.Errorf("Error calling Info. Code: %v; Data: %X; Log: %s", res.Code, res.Data, res.Log)
@@ -127,12 +131,12 @@ func (app *multiAppConn) Handshake() error {
 		_ = tmspInfo
 	}
 
-	// of the last block (nil if we starting from 0)
+	// last block (nil if we starting from 0)
 	var header *types.Header
 	var partsHeader types.PartSetHeader
 
-	// check block
-	// if the blockHeight == 0, we will replay everything
+	// replay all blocks after blockHeight
+	// if blockHeight == 0, we will replay everything
 	if blockHeight != 0 {
 		blockMeta := app.blockStore.LoadBlockMeta(blockHeight)
 		if blockMeta == nil {
@@ -176,7 +180,6 @@ func NewTMSPClient(addr, transport string) (tmspcli.Client, error) {
 	var client tmspcli.Client
 
 	// use local app (for testing)
-	// TODO: local proxy app conn
 	switch addr {
 	case "nilapp":
 		app := nilapp.NewNilApplication()

proxy/multi_app_conn_test.go

@@ -0,0 +1,22 @@
+package proxy
+
+import (
+	"testing"
+	"time"
+
+	"github.com/tendermint/go-p2p"
+	"github.com/tendermint/tendermint/config/tendermint_test"
+	"github.com/tendermint/tendermint/node"
+	"github.com/tendermint/tendermint/types"
+)
+
+func TestPersistence(t *testing.T) {
+
+	// create persistent dummy app
+	// set state on dummy app
+	// proxy handshake
+
+	config := tendermint_test.ResetConfig("proxy_test_")
+	multiApp := NewMultiAppConn(config, state, blockStore)
+
+}

state/execution.go

@@ -181,7 +181,58 @@ func (txErr InvalidTxError) Error() string {
 
 //-----------------------------------------------------------------------------
 
-// Replay all blocks after blockHeight and ensure the result matches the current state
+// mempool must be locked during commit and update
+// because state is typically reset on Commit and old txs must be replayed
+// against committed state before new txs are run in the mempool, lest they be invalid
+func (s *State) CommitStateUpdateMempool(proxyAppConn proxy.AppConnConsensus, block *types.Block, mempool Mempool) error {
+	mempool.Lock()
+	defer mempool.Unlock()
+
+	// flush out any CheckTx that have already started
+	// cs.proxyAppConn.FlushSync() // ?! XXX
+
+	// Commit block, get hash back
+	res := proxyAppConn.CommitSync()
+	if res.IsErr() {
+		log.Warn("Error in proxyAppConn.CommitSync", "error", res)
+		return res
+	}
+	if res.Log != "" {
+		log.Debug("Commit.Log: " + res.Log)
+	}
+
+	// Set the state's new AppHash
+	s.AppHash = res.Data
+
+	// Update mempool.
+	mempool.Update(block.Height, block.Txs)
+
+	return nil
+}
+
+// Execute and commit block against app, save block and state
+func (s *State) ApplyBlock(eventCache events.Fireable, proxyAppConn proxy.AppConnConsensus,
+	block *types.Block, partsHeader types.PartSetHeader, mempool Mempool) {
+
+	// Run the block on the State:
+	// + update validator sets
+	// + run txs on the proxyAppConn
+	err := s.ExecBlock(eventCache, proxyAppConn, block, partsHeader)
+	if err != nil {
+		// TODO: handle this gracefully.
+		PanicQ(Fmt("Exec failed for application: %v", err))
+	}
+
+	// lock mempool, commit state, update mempoool
+	err = s.CommitStateUpdateMempool(proxyAppConn, block, mempool)
+	if err != nil {
+		// TODO: handle this gracefully.
+		PanicQ(Fmt("Commit failed for application: %v", err))
+	}
+}
+
+// Replay all blocks after blockHeight and ensure the result matches the current state.
+// XXX: blockStore must guarantee to have blocks for height <= blockStore.Height()
 func (s *State) ReplayBlocks(header *types.Header, partsHeader types.PartSetHeader,
 	appConnConsensus proxy.AppConnConsensus, blockStore proxy.BlockStore) error {
 
@@ -197,36 +248,16 @@ func (s *State) ReplayBlocks(header *types.Header, partsHeader types.PartSetHead
 		stateCopy.SetBlockAndValidators(header, partsHeader, lastVals, nextVals)
 	}
 
+	// run the transactions
+	var eventCache events.Fireable // nil
+
 	// replay all blocks starting with blockHeight+1
 	for i := blockHeight + 1; i <= blockStore.Height(); i++ {
 		blockMeta := blockStore.LoadBlockMeta(i)
-		if blockMeta == nil {
-			PanicSanity(Fmt("Nil blockMeta at height %d when blockStore height is %d", i, blockStore.Height()))
-		}
-
 		block := blockStore.LoadBlock(i)
-		if block == nil {
-			PanicSanity(Fmt("Nil block at height %d when blockStore height is %d", i, blockStore.Height()))
-		}
-
-		// run the transactions
-		var eventCache events.Fireable // nil
-		err := stateCopy.ExecBlock(eventCache, appConnConsensus, block, blockMeta.PartsHeader)
-		if err != nil {
-			return fmt.Errorf("Error on ExecBlock: %v", err)
-		}
+		panicOnNilBlock(i, blockStore.Height(), block, blockMeta) // XXX
 
-		// commit the block (app should save the state)
-		res := appConnConsensus.CommitSync()
-		if res.IsErr() {
-			return fmt.Errorf("Error on Commit: %v", res)
-		}
-		if res.Log != "" {
-			log.Debug("Commit.Log: " + res.Log)
-		}
-
-		// update the state hash
-		stateCopy.AppHash = res.Data
+		stateCopy.ApplyBlock(eventCache, appConnConsensus, block, blockMeta.PartsHeader, mockMempool{})
 	}
 
 	// The computed state and the previously set state should be identical
@@ -235,3 +266,32 @@ func (s *State) ReplayBlocks(header *types.Header, partsHeader types.PartSetHead
 	}
 	return nil
 }
+
+func panicOnNilBlock(height, bsHeight int, block *types.Block, blockMeta *types.BlockMeta) {
+	if block == nil || blockMeta == nil {
+		// Sanity?
+		PanicCrisis(Fmt(`
+block/blockMeta is nil for height <= blockStore.Height() (%d <= %d).
+Block: %v,
+BlockMeta: %v
+`, height, bsHeight, block, blockMeta))
+
+	}
+}
+
+//------------------------------------------------
+// Updates to the mempool need to be synchronized with committing a block
+// so apps can reset their transient state on Commit
+
+type Mempool interface {
+	Lock()
+	Unlock()
+	Update(height int, txs []types.Tx)
+}
+
+type mockMempool struct {
+}
+
+func (m mockMempool) Lock()                             {}
+func (m mockMempool) Unlock()                           {}
+func (m mockMempool) Update(height int, txs []types.Tx) {}

state/state.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	. "github.com/tendermint/go-common"
+	cfg "github.com/tendermint/go-config"
 	dbm "github.com/tendermint/go-db"
 	"github.com/tendermint/go-wire"
 	"github.com/tendermint/tendermint/types"
@@ -95,6 +96,17 @@ func (s *State) GetValidators() (*types.ValidatorSet, *types.ValidatorSet) {
 	return s.LastValidators, s.Validators
 }
 
+// Load the most recent state from "state" db,
+// or create a new one (and save) from genesis.
+func GetState(config cfg.Config, stateDB dbm.DB) *State {
+	state := LoadState(stateDB)
+	if state == nil {
+		state = MakeGenesisStateFromFile(stateDB, config.GetString("genesis_file"))
+		state.Save()
+	}
+	return state
+}
+
 //-----------------------------------------------------------------------------
 // Genesis