add js test

plugin/dapp/js/executor/const.go

+package executor
+
+import "errors"
+
+//ErrInvalidFuncFormat 错误的函数调用格式(没有_)
+var errInvalidFuncFormat = errors.New("chain33.js: invalid function name format")
+
+//ErrInvalidFuncPrefix not exec_ execloal execdellocal
+var errInvalidFuncPrefix = errors.New("chain33.js: invalid function prefix format")
+
+//ErrFuncNotFound 函数没有找到
+var errFuncNotFound = errors.New("chain33.js: invalid function name not found")
+
+var callcode = `
+function kvcreator(dbtype) {
+    this.data = {}
+    this.kvs = []
+    this.logs = []
+    if (dbtype == "exec" || dbtype == "init") {
+        this.get = getstatedb
+    } else if (dbtype == "local") {
+        this.get = getlocaldb
+        this.list = listdb
+    }
+}
+
+kvcreator.prototype.add = function(k, v) {
+    var data = JSON.stringify(v) 
+    this.data[k] = data
+    this.kvs.push({key:k, value: data})
+}
+
+kvcreator.prototype.get = function(k) {
+    var v
+    if (this.data[k]) {
+        v = this.data[k]
+    } else {
+        v = this.get(k)
+    }
+    if (!v) {
+        return null
+    }
+    return JSON.parse(v)
+}
+
+kvcreator.prototype.listvalue = function(prefix, key, count, direction) {
+   var values = this.list(prefix, key, count, direction)
+   if (!values || values.length == 0) {
+       return []
+   }
+   var objlist = []
+   for (var i = 0; i < values.length; i++) {
+       objlist.push(JSON.parse(values[i]))
+   }
+   return objlist
+}
+
+kvcreator.prototype.addlog = function(log) {
+    if (this.list) {
+        throw new Error("local or dellocal can't set log")
+    }
+    this.logs.push(JSON.stringify(log))
+}
+
+kvcreator.prototype.receipt = function() {
+    return {kvs: this.kvs, logs: this.logs}
+}
+
+function callcode(context, f, args, loglist) {
+	if (f == "init") {
+		return Init(context)
+	}
+    var farr = f.split("_", 2)
+    if (farr.length !=  2) {
+        throw new Error("chain33.js: invalid function name format")
+    }
+    var prefix = farr[0]
+    var funcname = farr[1]
+    var runobj = {}
+    var logs = []
+    if (!Array.isArray(loglist)) {
+        throw new Error("chain33.js: loglist must be array")
+    }
+    for (var i = 0; i < loglist.length; i++) {
+        logs.push(JSON.parse(loglist[i]))
+    }
+    if (prefix == "exec") {
+        runobj = new Exec(JSON.parse(context))
+    } else if (prefix == "execlocal") {
+        runobj = new ExecLocal(JSON.parse(context), logs)
+    } else {
+        throw new Error("chain33.js: invalid function prefix format")
+    }
+    var arg = JSON.parse(args)
+    if (typeof runobj[funcname] != "function") {
+        throw new Error("chain33.js: invalid function name not found")
+    }
+    return runobj[funcname](arg)
+}
+`

plugin/dapp/js/executor/exec.go

 package executor
 
 import (
+	"github.com/33cn/chain33/system/dapp"
 	"github.com/33cn/chain33/types"
 	ptypes "github.com/33cn/plugin/plugin/dapp/js/types"
 	"github.com/33cn/plugin/plugin/dapp/js/types/jsproto"
 )
 
 func (c *js) Exec_Create(payload *jsproto.Create, tx *types.Transaction, index int) (*types.Receipt, error) {
-	db := c.GetStateDB()
-	_, err := db.Get(calcCodeKey(payload.Name))
+	execer := types.ExecName("user.js." + payload.Name)
+	kvc := dapp.NewKVCreator(c.GetStateDB(), calcStatePrefix([]byte(execer)), nil)
+	_, err := kvc.GetNoPrefix(calcCodeKey(payload.Name))
 	if err != nil && err != types.ErrNotFound {
 		return nil, err
 	}
 	if err == nil {
 		return nil, ptypes.ErrDupName
 	}
-	r := &types.Receipt{Ty: types.ExecOk}
-	//code must be utf-8 encoding
-	r.KV = append(r.KV, &types.KeyValue{
-		Key: calcCodeKey(payload.Name), Value: []byte(payload.Code)})
+	kvc.AddNoPrefix(calcCodeKey(payload.Name), []byte(payload.Code))
+	jsvalue, err := c.callVM("init", &jsproto.Call{Name: payload.Name}, tx, index, nil)
+	if err != nil {
+		return nil, err
+	}
+	kvs, logs, err := parseJsReturn(jsvalue)
+	if err != nil {
+		return nil, err
+	}
+	kvc.AddList(kvs)
+	r := &types.Receipt{Ty: types.ExecOk, KV: kvc.KVList(), Logs: logs}
 	return r, nil
 }
 
 func (c *js) Exec_Call(payload *jsproto.Call, tx *types.Transaction, index int) (*types.Receipt, error) {
-	jsvalue, err := c.callVM("exec", payload, tx, index)
+	execer := types.ExecName("user.js." + payload.Name)
+	kvc := dapp.NewKVCreator(c.GetStateDB(), []byte(execer), nil)
+	jsvalue, err := c.callVM("exec", payload, tx, index, nil)
 	if err != nil {
 		return nil, err
 	}
-	r := &types.Receipt{Ty: types.ExecOk}
-	kvs, err := parseKVS(jsvalue)
+	kvs, logs, err := parseJsReturn(jsvalue)
 	if err != nil {
 		return nil, err
 	}
-	r.KV = kvs
+	kvc.AddList(kvs)
+	r := &types.Receipt{Ty: types.ExecOk, KV: kvc.KVList(), Logs: logs}
 	return r, nil
 }

plugin/dapp/js/executor/exec_del_local.go

 package executor
 
 import (
+	"github.com/33cn/chain33/system/dapp"
 	"github.com/33cn/chain33/types"
 	"github.com/33cn/plugin/plugin/dapp/js/types/jsproto"
 )
@@ -10,15 +11,15 @@ func (c *js) ExecDelLocal_Create(payload *jsproto.Create, tx *types.Transaction,
 }
 
 func (c *js) ExecDelLocal_Call(payload *jsproto.Call, tx *types.Transaction, receiptData *types.ReceiptData, index int) (*types.LocalDBSet, error) {
-	jsvalue, err := c.callVM("execdellocal", payload, tx, index)
+	krollback := calcRollbackKey(tx.Hash())
+	kvc := dapp.NewKVCreator(c.GetLocalDB(), calcLocalPrefix(tx.Execer), krollback)
+	kvs, err := kvc.GetRollbackKVList()
 	if err != nil {
 		return nil, err
 	}
+	kvc.AddKVListOnly(kvs)
+	kvc.DelRollbackKV()
 	r := &types.LocalDBSet{}
-	kvs, err := parseKVS(jsvalue)
-	if err != nil {
-		return nil, err
-	}
-	r.KV = kvs
+	r.KV = kvc.KVList()
 	return r, nil
 }

plugin/dapp/js/executor/exec_local.go

 package executor
 
 import (
+	"github.com/33cn/chain33/system/dapp"
 	"github.com/33cn/chain33/types"
 	"github.com/33cn/plugin/plugin/dapp/js/types/jsproto"
 )
@@ -10,15 +11,19 @@ func (c *js) ExecLocal_Create(payload *jsproto.Create, tx *types.Transaction, re
 }
 
 func (c *js) ExecLocal_Call(payload *jsproto.Call, tx *types.Transaction, receiptData *types.ReceiptData, index int) (*types.LocalDBSet, error) {
-	jsvalue, err := c.callVM("execlocal", payload, tx, index)
+	k := calcRollbackKey(tx.Hash())
+	kvc := dapp.NewKVCreator(c.GetLocalDB(), calcLocalPrefix(tx.Execer), k)
+	jsvalue, err := c.callVM("execlocal", payload, tx, index, receiptData)
 	if err != nil {
 		return nil, err
 	}
-	r := &types.LocalDBSet{}
-	kvs, err := parseKVS(jsvalue)
+	kvs, _, err := parseJsReturn(jsvalue)
 	if err != nil {
 		return nil, err
 	}
-	r.KV = kvs
+	kvc.AddList(kvs)
+	kvc.AddRollbackKV()
+	r := &types.LocalDBSet{}
+	r.KV = kvc.KVList()
 	return r, nil
 }

plugin/dapp/js/executor/js.go

@@ -49,7 +49,8 @@ func (u *js) GetDriverName() string {
 	return driverName
 }
 
-func (u *js) callVM(prefix string, payload *jsproto.Call, tx *types.Transaction, index int) (*otto.Object, error) {
+func (u *js) callVM(prefix string, payload *jsproto.Call, tx *types.Transaction,
+	index int, receiptData *types.ReceiptData) (*otto.Object, error) {
 	vm, err := u.createVM(tx, index)
 	if err != nil {
 		return nil, err
@@ -59,10 +60,19 @@ func (u *js) callVM(prefix string, payload *jsproto.Call, tx *types.Transaction,
 	if err != nil {
 		return nil, err
 	}
+	loglist, err := jslogs(receiptData)
+	if err != nil {
+		return nil, err
+	}
+	vm.Set("loglist", loglist)
 	vm.Set("code", code)
-	vm.Set("f", prefix+"_"+payload.Funcname)
+	if prefix == "init" {
+		vm.Set("f", "init")
+	} else {
+		vm.Set("f", prefix+"_"+payload.Funcname)
+	}
 	vm.Set("args", payload.Args)
-	callfunc := "callcode(context, f, args)"
+	callfunc := "callcode(context, f, args, loglist)"
 	jsvalue, err := vm.Run(callcode + string(code) + "\n" + callfunc)
 	if err != nil {
 		return nil, err
@@ -73,6 +83,26 @@ func (u *js) callVM(prefix string, payload *jsproto.Call, tx *types.Transaction,
 	return jsvalue.Object(), nil
 }
 
+func jslogs(receiptData *types.ReceiptData) ([]string, error) {
+	data := make([]string, 0)
+	if receiptData == nil {
+		return data, nil
+	}
+	for i := 0; i < len(receiptData.Logs); i++ {
+		logitem := receiptData.Logs[i]
+		if logitem.Ty != ptypes.TyLogJs {
+			continue
+		}
+		var jslog jsproto.JsLog
+		err := types.Decode(logitem.Log, &jslog)
+		if err != nil {
+			return nil, err
+		}
+		data = append(data, jslog.Data)
+	}
+	return data, nil
+}
+
 func (u *js) getContext(tx *types.Transaction, index int64) *blockContext {
 	return &blockContext{
 		Height:     u.GetHeight(),

plugin/dapp/js/executor/jsvm.go

@@ -6,44 +6,10 @@ import (
 
 	"github.com/33cn/chain33/types"
 	ptypes "github.com/33cn/plugin/plugin/dapp/js/types"
+	"github.com/33cn/plugin/plugin/dapp/js/types/jsproto"
 	"github.com/robertkrimen/otto"
 )
 
-//ErrInvalidFuncFormat 错误的函数调用格式(没有_)
-var errInvalidFuncFormat = errors.New("chain33.js: invalid function name format")
-
-//ErrInvalidFuncPrefix not exec_ execloal execdellocal
-var errInvalidFuncPrefix = errors.New("chain33.js: invalid function prefix format")
-
-//ErrFuncNotFound 函数没有找到
-var errFuncNotFound = errors.New("chain33.js: invalid function name not found")
-
-var callcode = `
-function callcode(context, f, args) {
-    var farr = f.split("_", 2)
-    if (farr.length !=  2) {
-        throw new Error("chain33.js: invalid function name format")
-    }
-    var prefix = farr[0]
-    var funcname = farr[1]
-    var runobj = {}
-    if (prefix == "exec") {
-        runobj = new Exec(JSON.parse(context))
-    } else if (prefix == "execlocal") {
-        runobj = new ExecLocal(JSON.parse(context))
-    } else if (prefix == "execdellocal") {
-        runobj = new ExecDelLocal(JSON.parse(context))
-    } else {
-        throw new Error("chain33.js: invalid function prefix format")
-    }
-    var arg = JSON.parse(args)
-    if (typeof runobj[funcname] != "function") {
-        throw new Error("chain33.js: invalid function name not found")
-    }
-    return runobj[funcname](arg)
-}
-`
-
 type blockContext struct {
 	Height     int64  `json:"height"`
 	Blocktime  int64  `json:"blocktime"`
@@ -65,30 +31,52 @@ type listdbReturn struct {
 	Err   string   `json:"err"`
 }
 
-func parseKVS(jsvalue *otto.Object) (kvlist []*types.KeyValue, err error) {
+func parseJsReturn(jsvalue *otto.Object) (kvlist []*types.KeyValue, logs []*types.ReceiptLog, err error) {
+	//kvs
 	obj, err := getObject(jsvalue, "kvs")
 	if err != nil {
-		return nil, ptypes.ErrJsReturnKVSFormat
+		return nil, nil, ptypes.ErrJsReturnKVSFormat
 	}
 	if obj.Class() != "Array" {
-		return nil, ptypes.ErrJsReturnKVSFormat
+		return nil, nil, ptypes.ErrJsReturnKVSFormat
 	}
 	size, err := getInt(obj, "length")
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 	for i := 0; i < int(size); i++ {
 		data, err := getObject(obj, fmt.Sprint(i))
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 		kv, err := parseKV(data)
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 		kvlist = append(kvlist, kv)
 	}
-	return kvlist, nil
+	//logs
+	obj, err = getObject(jsvalue, "logs")
+	if err != nil {
+		return nil, nil, ptypes.ErrJsReturnLogsFormat
+	}
+	if obj.Class() != "Array" {
+		return nil, nil, ptypes.ErrJsReturnLogsFormat
+	}
+	size, err = getInt(obj, "length")
+	if err != nil {
+		return nil, nil, err
+	}
+	for i := 0; i < int(size); i++ {
+		data, err := getString(obj, fmt.Sprint(i))
+		if err != nil {
+			return nil, nil, err
+		}
+		l := &types.ReceiptLog{
+			Ty: ptypes.TyLogJs, Log: types.Encode(&jsproto.JsLog{Data: data})}
+		logs = append(logs, l)
+	}
+	return kvlist, logs, nil
 }
 
 func getString(data *otto.Object, key string) (string, error) {

plugin/dapp/js/executor/jsvm_test.go

 package executor
 
 import (
-	"encoding/json"
 	"strings"
 	"testing"
+	"time"
 
+	"github.com/33cn/chain33/common/db"
+	"github.com/33cn/chain33/types"
+	"github.com/33cn/chain33/util"
+	"github.com/33cn/plugin/plugin/dapp/js/types/jsproto"
 	"github.com/robertkrimen/otto"
 	"github.com/stretchr/testify/assert"
 )
 
 var jscode = `
-function Exec(context) {
-	this.context = context
+//数据结构设计
+//kvlist [{key:"key1", value:"value1"},{key:"key2", value:"value2"}]
+//log 设计 {json data}
+function Init(context) {
+    this.kvc = new kvcreator("init")
+    this.context = context
+    this.kvc.add("action", "init")
+    this.kvc.add("context", this.context)
+    return this.kvc.receipt()
 }
 
-function ExecLocal(context) {
+function Exec(context) {
+    this.kvc = new kvcreator("exec")
 	this.context = context
 }
 
-function ExecDelLocal(context) {
+function ExecLocal(context, logs) {
+    this.kvc = new kvcreator("local")
 	this.context = context
+    this.logs = logs
 }
 
 Exec.prototype.hello = function(args) {
-	return {args: args, action:"exec", context: this.context}
+    this.kvc.add("args", args)
+    this.kvc.add("action", "exec")
+    this.kvc.add("context", this.context)
+    this.kvc.addlog('{"key1": "value1"}')
+    this.kvc.addlog('{"key2": "value2"}')
+	return this.kvc.receipt()
 }
 
 ExecLocal.prototype.hello = function(args) {
-	return {args: args,  action:"execlocal", context: this.context}
+    this.kvc.add("args", args)
+    this.kvc.add("action", "exec")
+    this.kvc.add("log", this.logs)
+    this.kvc.add("context", this.context)
+	return this.kvc.receipt()
 }
+`
+
+func initExec(ldb db.DB, kvdb db.KVDB, t *testing.T) *js {
+	e := newjs().(*js)
+	e.SetEnv(1, time.Now().Unix(), 1)
+	e.SetLocalDB(kvdb)
+	e.SetStateDB(kvdb)
 
-ExecDelLocal.prototype.hello = function(args) {
-	return {args: args, action:"execdellocal", context: this.context}
+	c, tx := createCodeTx("test", jscode)
+	receipt, err := e.Exec_Create(c, tx, 0)
+	assert.Nil(t, err)
+	util.SaveKVList(ldb, receipt.KV)
+	return e
 }
-`
 
-func callJsFunc(context *blockContext, code string, f string, args string) (otto.Value, error) {
-	data, err := json.Marshal(context)
-	if err != nil {
-		return otto.Value{}, err
+func createCodeTx(name, jscode string) (*jsproto.Create, *types.Transaction) {
+	data := &jsproto.Create{
+		Code: jscode,
+		Name: name,
 	}
-	vm := otto.New()
-	vm.Set("context", string(data))
-	vm.Set("code", code)
-	vm.Set("f", f)
-	vm.Set("args", args)
-	callfunc := "callcode(context, f, args)"
-	return vm.Run(callcode + code + "\n" + callfunc)
+	return data, &types.Transaction{Execer: []byte("js"), Payload: types.Encode(data)}
 }
+
+func callCodeTx(name, f, args string) (*jsproto.Call, *types.Transaction) {
+	data := &jsproto.Call{
+		Funcname: f,
+		Name:     name,
+		Args:     args,
+	}
+	return data, &types.Transaction{Execer: []byte("js"), Payload: types.Encode(data)}
+}
+
 func TestCallcode(t *testing.T) {
-	value, err := callJsFunc(&blockContext{Height: 1}, jscode, "exec_hello", `{"hello2":"world2"}`)
-	assert.Nil(t, err)
-	assert.Equal(t, true, value.IsObject())
-	action, err := value.Object().Get("action")
-	assert.Nil(t, err)
-	assert.Equal(t, "exec", action.String())
-	args, err := value.Object().Get("args")
-	assert.Nil(t, err)
-	arg, err := args.Object().Get("hello2")
-	assert.Nil(t, err)
-	assert.Equal(t, "world2", arg.String())
+	dir, ldb, kvdb := util.CreateTestDB()
+	defer util.CloseTestDB(dir, ldb)
+	e := initExec(ldb, kvdb, t)
 
-	context, err := value.Object().Get("context")
-	assert.Nil(t, err)
-	cvalue, err := context.Object().Get("height")
+	call, tx := callCodeTx("test", "hello", `{"hello":"world"}`)
+	receipt, err := e.Exec_Call(call, tx, 0)
 	assert.Nil(t, err)
-	assert.Equal(t, "1", cvalue.String())
+	util.SaveKVList(ldb, receipt.KV)
+	util.PrintKV(receipt.KV)
+}
+
+func TestCallError(t *testing.T) {
+	dir, ldb, kvdb := util.CreateTestDB()
+	defer util.CloseTestDB(dir, ldb)
+	e := initExec(ldb, kvdb, t)
 	//test call error(invalid json input)
-	_, err = callJsFunc(&blockContext{Height: 1}, jscode, "exec_hello", `{hello2":"world2"}`)
+	call, tx := callCodeTx("test", "hello", `{hello":"world"}`)
+	_, err := e.callVM("exec", call, tx, 0, nil)
 	_, ok := err.(*otto.Error)
 	assert.Equal(t, true, ok)
 	assert.Equal(t, true, strings.Contains(err.Error(), "SyntaxError"))
 
-	_, err = callJsFunc(&blockContext{Height: 1}, jscode, "hello", `{"hello2":"world2"}`)
-	assert.Equal(t, true, strings.Contains(err.Error(), errInvalidFuncFormat.Error()))
-	_, err = callJsFunc(&blockContext{Height: 1}, jscode, "hello_hello", `{"hello2":"world2"}`)
+	call, tx = callCodeTx("test", "hello", `{"hello":"world"}`)
+	_, err = e.callVM("hello", call, tx, 0, nil)
+	_, ok = err.(*otto.Error)
+	assert.Equal(t, true, ok)
 	assert.Equal(t, true, strings.Contains(err.Error(), errInvalidFuncPrefix.Error()))
-	_, err = callJsFunc(&blockContext{Height: 1}, jscode, "exec_hello2", `{"hello2":"world2"}`)
+
+	call, tx = callCodeTx("test", "hello2", `{"hello":"world"}`)
+	_, err = e.callVM("exec", call, tx, 0, nil)
+	_, ok = err.(*otto.Error)
+	assert.Equal(t, true, ok)
 	assert.Equal(t, true, strings.Contains(err.Error(), errFuncNotFound.Error()))
 }

plugin/dapp/js/executor/key.go

 package executor
 
+func calcLocalPrefix(execer []byte) []byte {
+	s := append([]byte("LODB-"), execer...)
+	s = append(s, byte('-'))
+	return s
+}
+
+func calcStatePrefix(execer []byte) []byte {
+	s := append([]byte("mavl-"), execer...)
+	s = append(s, byte('-'))
+	return s
+}
+
 func calcCodeKey(name string) []byte {
 	return append([]byte("mavl-js-code-"), []byte(name)...)
 }
+
+func calcRollbackKey(hash []byte) []byte {
+	return append([]byte("LODB-js-rollback-"), hash...)
+}

plugin/dapp/js/proto/js.proto

@@ -21,3 +21,7 @@ message JsAction {
     }
     int32 ty = 3;
 }
+
+message JsLog {
+    string data = 1;
+}
\ No newline at end of file

plugin/dapp/js/types/js.go

@@ -2,6 +2,7 @@ package types
 
 import (
 	"errors"
+	"reflect"
 
 	"github.com/33cn/chain33/types"
 	"github.com/33cn/plugin/plugin/dapp/js/types/jsproto"
@@ -15,8 +16,7 @@ const (
 
 //日志类型
 const (
-	TyLogJsCreate = iota + 1
-	TyLogJsCall
+	TyLogJs = 10000
 )
 
 var (
@@ -24,7 +24,9 @@ var (
 		"Create": jsActionCreate,
 		"Call":   jsActionCall,
 	}
-	logMap = map[int64]*types.LogInfo{}
+	logMap = map[int64]*types.LogInfo{
+		TyLogJs: {Ty: reflect.TypeOf(jsproto.JsLog{}), Name: "TyLogJs"},
+	}
 )
 
 //JsX 插件名字
@@ -32,9 +34,10 @@ var JsX = "js"
 
 //错误常量
 var (
-	ErrDupName           = errors.New("ErrDupName")
-	ErrJsReturnNotObject = errors.New("ErrJsReturnNotObject")
-	ErrJsReturnKVSFormat = errors.New("ErrJsReturnKVSFormat")
+	ErrDupName            = errors.New("ErrDupName")
+	ErrJsReturnNotObject  = errors.New("ErrJsReturnNotObject")
+	ErrJsReturnKVSFormat  = errors.New("ErrJsReturnKVSFormat")
+	ErrJsReturnLogsFormat = errors.New("ErrJsReturnLogsFormat")
 )
 
 func init() {

plugin/dapp/js/types/jsproto/js.pb.go

@@ -31,7 +31,7 @@ func (m *Create) Reset()         { *m = Create{} }
 func (m *Create) String() string { return proto.CompactTextString(m) }
 func (*Create) ProtoMessage()    {}
 func (*Create) Descriptor() ([]byte, []int) {
-	return fileDescriptor_js_26fa46fa936181bc, []int{0}
+	return fileDescriptor_js_25eaf89ab172ea83, []int{0}
 }
 func (m *Create) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Create.Unmarshal(m, b)
@@ -79,7 +79,7 @@ func (m *Call) Reset()         { *m = Call{} }
 func (m *Call) String() string { return proto.CompactTextString(m) }
 func (*Call) ProtoMessage()    {}
 func (*Call) Descriptor() ([]byte, []int) {
-	return fileDescriptor_js_26fa46fa936181bc, []int{1}
+	return fileDescriptor_js_25eaf89ab172ea83, []int{1}
 }
 func (m *Call) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Call.Unmarshal(m, b)
@@ -135,7 +135,7 @@ func (m *JsAction) Reset()         { *m = JsAction{} }
 func (m *JsAction) String() string { return proto.CompactTextString(m) }
 func (*JsAction) ProtoMessage()    {}
 func (*JsAction) Descriptor() ([]byte, []int) {
-	return fileDescriptor_js_26fa46fa936181bc, []int{2}
+	return fileDescriptor_js_25eaf89ab172ea83, []int{2}
 }
 func (m *JsAction) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_JsAction.Unmarshal(m, b)
@@ -273,27 +273,67 @@ func _JsAction_OneofSizer(msg proto.Message) (n int) {
 	return n
 }
 
+type JsLog struct {
+	Data                 string   `protobuf:"bytes,1,opt,name=data,proto3" json:"data,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *JsLog) Reset()         { *m = JsLog{} }
+func (m *JsLog) String() string { return proto.CompactTextString(m) }
+func (*JsLog) ProtoMessage()    {}
+func (*JsLog) Descriptor() ([]byte, []int) {
+	return fileDescriptor_js_25eaf89ab172ea83, []int{3}
+}
+func (m *JsLog) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_JsLog.Unmarshal(m, b)
+}
+func (m *JsLog) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_JsLog.Marshal(b, m, deterministic)
+}
+func (dst *JsLog) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_JsLog.Merge(dst, src)
+}
+func (m *JsLog) XXX_Size() int {
+	return xxx_messageInfo_JsLog.Size(m)
+}
+func (m *JsLog) XXX_DiscardUnknown() {
+	xxx_messageInfo_JsLog.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_JsLog proto.InternalMessageInfo
+
+func (m *JsLog) GetData() string {
+	if m != nil {
+		return m.Data
+	}
+	return ""
+}
+
 func init() {
 	proto.RegisterType((*Create)(nil), "jsproto.Create")
 	proto.RegisterType((*Call)(nil), "jsproto.Call")
 	proto.RegisterType((*JsAction)(nil), "jsproto.JsAction")
-}
-
-func init() { proto.RegisterFile("js.proto", fileDescriptor_js_26fa46fa936181bc) }
-
-var fileDescriptor_js_26fa46fa936181bc = []byte{
-	// 199 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x4c, 0x8e, 0xcd, 0xae, 0x82, 0x30,
-	0x10, 0x85, 0x81, 0xcb, 0xdf, 0x1d, 0x72, 0xaf, 0x49, 0x57, 0xc4, 0x95, 0xc1, 0x8d, 0x6e, 0x88,
-	0xc1, 0x27, 0x50, 0x36, 0x84, 0x65, 0xdf, 0xa0, 0xd6, 0x6a, 0x24, 0x95, 0x1a, 0x5a, 0x4c, 0x78,
-	0x7b, 0xd3, 0x81, 0x80, 0xbb, 0xaf, 0x73, 0xbe, 0xce, 0x1c, 0x88, 0x1b, 0x9d, 0xbf, 0x3a, 0x65,
-	0x14, 0x89, 0x1a, 0x8d, 0x90, 0x1d, 0x20, 0x2c, 0x3b, 0xc1, 0x8c, 0x20, 0x04, 0x7c, 0xae, 0xae,
-	0x22, 0x75, 0x37, 0xee, 0xee, 0x97, 0x22, 0xdb, 0x59, 0xcb, 0x9e, 0x22, 0xf5, 0xc6, 0x99, 0xe5,
-	0xac, 0x06, 0xbf, 0x64, 0x52, 0xce, 0x99, 0xbb, 0x64, 0x64, 0x0d, 0xf1, 0xad, 0x6f, 0xf9, 0xd7,
-	0x9f, 0xf9, 0x6d, 0x7d, 0xd6, 0xdd, 0x75, 0xfa, 0x33, 0xfa, 0x96, 0x33, 0x0d, 0x71, 0xad, 0x4f,
-	0xdc, 0x3c, 0x54, 0x4b, 0xf6, 0x10, 0x72, 0x6c, 0x82, 0x1b, 0x93, 0x62, 0x95, 0x4f, 0x1d, 0xf3,
-	0xb1, 0x60, 0xe5, 0xd0, 0x49, 0x20, 0x5b, 0xf0, 0x39, 0x93, 0x12, 0x4f, 0x24, 0xc5, 0xdf, 0x22,
-	0x32, 0x29, 0x2b, 0x87, 0x62, 0x48, 0xfe, 0xc1, 0x33, 0x03, 0x5e, 0x0b, 0xa8, 0x67, 0x86, 0x73,
-	0x04, 0xc1, 0x9b, 0xc9, 0x5e, 0x5c, 0x42, 0x94, 0x8f, 0x9f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x35,
-	0x5c, 0xc0, 0x76, 0x0e, 0x01, 0x00, 0x00,
+	proto.RegisterType((*JsLog)(nil), "jsproto.JsLog")
+}
+
+func init() { proto.RegisterFile("js.proto", fileDescriptor_js_25eaf89ab172ea83) }
+
+var fileDescriptor_js_25eaf89ab172ea83 = []byte{
+	// 215 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x4c, 0x8f, 0xcf, 0x4e, 0x86, 0x30,
+	0x10, 0xc4, 0x3f, 0x90, 0x7f, 0x2e, 0x51, 0x93, 0x9e, 0x88, 0x5e, 0x4c, 0xbd, 0xe8, 0x85, 0x18,
+	0x7c, 0x02, 0xe5, 0x42, 0x88, 0xa7, 0xbe, 0xc1, 0x5a, 0x2a, 0x91, 0x54, 0x6a, 0x68, 0x31, 0xe1,
+	0xed, 0x4d, 0x17, 0x84, 0xef, 0xf6, 0xeb, 0xce, 0x74, 0x67, 0x16, 0xb2, 0xc1, 0x96, 0x3f, 0x93,
+	0x71, 0x86, 0xa5, 0x83, 0x25, 0xe0, 0xcf, 0x90, 0xd4, 0x93, 0x42, 0xa7, 0x18, 0x83, 0x48, 0x9a,
+	0x4e, 0x15, 0xc1, 0x7d, 0xf0, 0x78, 0x29, 0x88, 0xfd, 0x6c, 0xc4, 0x6f, 0x55, 0x84, 0xeb, 0xcc,
+	0x33, 0x6f, 0x21, 0xaa, 0x51, 0xeb, 0x5d, 0x0b, 0x0e, 0x8d, 0xdd, 0x42, 0xf6, 0x39, 0x8f, 0xf2,
+	0xec, 0xcf, 0xfe, 0xf6, 0x7e, 0x9c, 0x7a, 0x5b, 0x5c, 0xac, 0x7e, 0xcf, 0xdc, 0x42, 0xd6, 0xda,
+	0x57, 0xe9, 0xbe, 0xcc, 0xc8, 0x9e, 0x20, 0x91, 0xd4, 0x84, 0x36, 0xe6, 0xd5, 0x4d, 0xb9, 0x75,
+	0x2c, 0xd7, 0x82, 0xcd, 0x49, 0x6c, 0x06, 0xf6, 0x00, 0x91, 0x44, 0xad, 0x29, 0x22, 0xaf, 0xae,
+	0x0e, 0x23, 0x6a, 0xdd, 0x9c, 0x04, 0x89, 0xec, 0x1a, 0x42, 0xb7, 0x50, 0x5a, 0x2c, 0x42, 0xb7,
+	0xbc, 0xa5, 0x10, 0xff, 0xa2, 0x9e, 0x15, 0xbf, 0x83, 0xb8, 0xb5, 0xef, 0xa6, 0xf7, 0x8d, 0x3a,
+	0x74, 0xf8, 0x7f, 0x81, 0xe7, 0x8f, 0x84, 0x36, 0xbd, 0xfc, 0x05, 0x00, 0x00, 0xff, 0xff, 0xdb,
+	0x0d, 0xa5, 0xc0, 0x2b, 0x01, 0x00, 0x00,
 }

vendor/github.com/33cn/chain33/system/dapp/util.go

@@ -19,16 +19,61 @@ func HeightIndexStr(height, index int64) string {
 
 //KVCreator 创建KV的辅助工具
 type KVCreator struct {
-	kvs  []*types.KeyValue
-	kvdb db.KV
+	kvs          []*types.KeyValue
+	kvdb         db.KV
+	autorollback bool
+	prefix       []byte
+	rollbackkey  []byte
+	rollbackkvs  []*types.KeyValue
 }
 
 //NewKVCreator 创建创建者
-func NewKVCreator(kv db.KV) *KVCreator {
-	return &KVCreator{kvdb: kv}
+//注意: 自动回滚可能会严重影响系统性能
+func NewKVCreator(kv db.KV, prefix []byte, rollbackkey []byte) *KVCreator {
+	return &KVCreator{
+		kvdb:         kv,
+		prefix:       prefix,
+		rollbackkey:  rollbackkey,
+		autorollback: rollbackkey != nil,
+	}
+}
+
+func (c *KVCreator) addPrefix(key []byte) []byte {
+	newkey := append([]byte{}, c.prefix...)
+	return append(newkey, key...)
 }
 
 func (c *KVCreator) add(key, value []byte, set bool) *KVCreator {
+	if c.prefix != nil {
+		key = c.addPrefix(key)
+	}
+	return c.addnoprefix(key, value, set)
+}
+
+func (c *KVCreator) addnoprefix(key, value []byte, set bool) *KVCreator {
+	if c.autorollback {
+		prev, err := c.kvdb.Get(key)
+		//数据库发生错误，直接panic (再执行器中会recover)
+		if err != nil && err != types.ErrNotFound {
+			panic(err)
+		}
+		if value == nil { //del
+			//不需要做任何处理, 也不用加入 kvs
+			if err == types.ErrNotFound {
+				return c
+			}
+			rb := &types.KeyValue{Key: key, Value: prev}
+			c.rollbackkvs = append(c.rollbackkvs, rb)
+		} else {
+			if err == types.ErrNotFound { //add
+				rb := &types.KeyValue{Key: key}
+				c.rollbackkvs = append(c.rollbackkvs, rb)
+			} else { //update
+				rb := &types.KeyValue{Key: key, Value: prev}
+				c.rollbackkvs = append(c.rollbackkvs, rb)
+			}
+		}
+	}
 	c.kvs = append(c.kvs, &types.KeyValue{Key: key, Value: value})
 	if set {
 		c.kvdb.Set(key, value)
@@ -36,17 +81,110 @@ func (c *KVCreator) add(key, value []byte, set bool) *KVCreator {
 	return c
 }
 
+//Get 从KV中获取 value
+func (c *KVCreator) Get(key []byte) ([]byte, error) {
+	if c.prefix != nil {
+		newkey := c.addPrefix(key)
+		return c.kvdb.Get(newkey)
+	}
+	return c.kvdb.Get(key)
+}
+
+//GetNoPrefix 从KV中获取 value, 不自动添加前缀
+func (c *KVCreator) GetNoPrefix(key []byte) ([]byte, error) {
+	return c.kvdb.Get(key)
+}
+
 //Add add and set to kvdb
 func (c *KVCreator) Add(key, value []byte) *KVCreator {
 	return c.add(key, value, true)
 }
 
-//AddKV only add KV
-func (c *KVCreator) AddKV(key, value []byte) *KVCreator {
+//AddNoPrefix 不自动添加prefix
+func (c *KVCreator) AddNoPrefix(key, value []byte) *KVCreator {
+	return c.addnoprefix(key, value, true)
+}
+
+//AddList only add KVList
+func (c *KVCreator) AddList(list []*types.KeyValue) *KVCreator {
+	for _, kv := range list {
+		c.add(kv.Key, kv.Value, true)
+	}
+	return c
+}
+
+//AddKVOnly only add KV(can't auto rollback)
+func (c *KVCreator) AddKVOnly(key, value []byte) *KVCreator {
+	if c.autorollback {
+		panic("autorollback open, AddKVOnly not allow")
+	}
 	return c.add(key, value, false)
 }
 
+//AddKVListOnly only add KVList (can't auto rollback)
+func (c *KVCreator) AddKVListOnly(list []*types.KeyValue) *KVCreator {
+	if c.autorollback {
+		panic("autorollback open, AddKVListOnly not allow")
+	}
+	for _, kv := range list {
+		c.add(kv.Key, kv.Value, false)
+	}
+	return c
+}
+
 //KVList 读取所有的kv列表
 func (c *KVCreator) KVList() []*types.KeyValue {
 	return c.kvs
 }
+
+//AddRollbackKV 添加回滚数据到 KV
+func (c *KVCreator) AddRollbackKV() {
+	v := types.Encode(c.rollbackLog())
+	c.kvs = append(c.kvs, &types.KeyValue{Key: c.rollbackkey, Value: v})
+}
+
+//DelRollbackKV 删除rollback kv
+func (c *KVCreator) DelRollbackKV() {
+	c.kvs = append(c.kvs, &types.KeyValue{Key: c.rollbackkey})
+}
+
+//GetRollbackKVList 获取 rollback 到 Key and Vaue
+func (c *KVCreator) GetRollbackKVList() ([]*types.KeyValue, error) {
+	data, err := c.kvdb.Get(c.rollbackkey)
+	if err != nil {
+		return nil, err
+	}
+	var rollbacklog types.ReceiptLog
+	err = types.Decode(data, &rollbacklog)
+	if err != nil {
+		return nil, err
+	}
+	return c.parseRollback(&rollbacklog)
+}
+
+//rollbackLog rollback log
+func (c *KVCreator) rollbackLog() *types.ReceiptLog {
+	data := types.Encode(&types.LocalDBSet{KV: c.rollbackkvs})
+	return &types.ReceiptLog{Ty: types.TyLogRollback, Log: data}
+}
+
+//ParseRollback 解析rollback的数据
+func (c *KVCreator) parseRollback(log *types.ReceiptLog) ([]*types.KeyValue, error) {
+	var data types.LocalDBSet
+	if log.Ty != types.TyLogRollback {
+		return nil, types.ErrInvalidParam
+	}
+	err := types.Decode(log.Log, &data)
+	if err != nil {
+		return nil, err
+	}
+	return data.KV, nil
+}
+
+//AddToLogs add not empty log to logs
+func (c *KVCreator) AddToLogs(logs []*types.ReceiptLog) []*types.ReceiptLog {
+	if len(c.rollbackkvs) == 0 {
+		return logs
+	}
+	return append(logs, c.rollbackLog())
+}

vendor/github.com/33cn/chain33/types/const.go

@@ -100,6 +100,7 @@ const (
 	TyLogExecActive      = 10
 	TyLogGenesisTransfer = 11
 	TyLogGenesisDeposit  = 12
+	TyLogRollback        = 13
 )
 
 //SystemLog 系统log日志
@@ -116,6 +117,7 @@ var SystemLog = map[int64]*LogInfo{
 	TyLogExecActive:      {reflect.TypeOf(ReceiptExecAccountTransfer{}), "LogExecActive"},
 	TyLogGenesisTransfer: {reflect.TypeOf(ReceiptAccountTransfer{}), "LogGenesisTransfer"},
 	TyLogGenesisDeposit:  {reflect.TypeOf(ReceiptAccountTransfer{}), "LogGenesisDeposit"},
+	TyLogRollback:        {reflect.TypeOf(LocalDBSet{}), "LogRollback"},
 }
 
 //exec type

vendor/github.com/33cn/chain33/types/proto/db.proto

@@ -108,4 +108,4 @@ message PruneData {
 //用于存储db Pool数据的Value
 message StoreValuePool {
     repeated bytes values = 1;
-}
\ No newline at end of file
+} 
\ No newline at end of file

vendor/github.com/33cn/chain33/util/util.go

@@ -17,6 +17,7 @@ import (
 	"testing"
 	"unicode"
 
+	"github.com/33cn/chain33/common"
 	"github.com/33cn/chain33/common/address"
 	"github.com/33cn/chain33/common/crypto"
 	"github.com/33cn/chain33/common/db"
@@ -428,3 +429,27 @@ func CloseTestDB(dir string, dbm db.DB) {
 	os.RemoveAll(dir)
 	dbm.Close()
 }
+
+//SaveKVList 保存kvs to database
+func SaveKVList(kvdb db.DB, kvs []*types.KeyValue) {
+	//printKV(kvs)
+	batch := kvdb.NewBatch(true)
+	for i := 0; i < len(kvs); i++ {
+		if kvs[i].Value == nil {
+			batch.Delete(kvs[i].Key)
+			continue
+		}
+		batch.Set(kvs[i].Key, kvs[i].Value)
+	}
+	err := batch.Write()
+	if err != nil {
+		panic(err)
+	}
+}
+
+//PrintKV 打印KVList
+func PrintKV(kvs []*types.KeyValue) {
+	for i := 0; i < len(kvs); i++ {
+		fmt.Printf("KV %d %s(%s)\n", i, string(kvs[i].Key), common.ToHex(kvs[i].Value))
+	}
+}