remove statedb cache

Author: TraceBundy

consensus/cbft/context/context.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"github.com/PlatONnetwork/PlatON-Go/consensus"
 	ctypes "github.com/PlatONnetwork/PlatON-Go/consensus/cbft/types"
-	"github.com/PlatONnetwork/PlatON-Go/core/state"
 	"github.com/PlatONnetwork/PlatON-Go/p2p/enode"
 	"sync/atomic"
 	"time"
@@ -75,12 +74,12 @@ func (ctx *BlockTimeContext) Deadline() time.Time {
 }
 
 type Context struct {
-	ctx           context.Context
-	backend       sdk.Backend
-	cbft          CbftEngine
-	blockIndex    uint32
-	header        *types.Header
-	statedb       atomic.Value
+	ctx        context.Context
+	backend    sdk.Backend
+	cbft       CbftEngine
+	blockIndex uint32
+	header     *types.Header
+	//statedb       atomic.Value
 	parentStateDB atomic.Value
 }
 
@@ -129,14 +128,14 @@ func (ctx *Context) Header() *types.Header {
 }
 
 func (ctx *Context) StateDB() sdk.StateDBReader {
-	if ctx.cbft == nil {
-		return nil
-	}
-	if s := ctx.statedb.Load(); s != nil {
-		return s.(sdk.StateDBReader).(*state.StateDB).NewStateDB()
-	}
+	//if ctx.cbft == nil {
+	//	return nil
+	//}
+	//if s := ctx.statedb.Load(); s != nil {
+	//	return s.(sdk.StateDBReader).(*state.StateDB).NewStateDB()
+	//}
 	state, _ := ctx.cbft.GetState(ctx.Header())
-	ctx.statedb.Store(state)
+	//ctx.statedb.Store(state)
 	return state
 }