Merge pull request: add block height control (#93)

* add block height control

* disable bank handler

* update

* add 	MILESTONE_MERCURY_HEIGHT

* enhance message

* rename to 	milestoneMercuryHeight       int64

Co-authored-by: aaron <[email protected]>
Co-authored-by: Green <[email protected]>
Co-authored-by: zhongqiuwood <[email protected]>

.gitignore

@@ -17,6 +17,8 @@ examples/build/*
 docs/_build
 docs/tutorial
 docs/node_modules
+dev/testnet
+dev/cache
 dist
 tools-stamp
 

types/milestone.go

@@ -0,0 +1,58 @@
+package types
+
+import (
+	"strconv"
+	"sync"
+)
+
+var (
+	MILESTONE_MERCURY_HEIGHT     string
+	milestoneMercuryHeight       int64
+	once                         sync.Once
+)
+
+func string2number(input string) int64 {
+	if len(input) == 0 {
+		input = "0"
+	}
+	res, err := strconv.ParseInt(input, 10, 64)
+	if err != nil {
+		panic(err)
+	}
+	return res
+}
+
+func initVersionBlockHeight() {
+	once.Do(func() {
+		milestoneMercuryHeight = string2number(MILESTONE_MERCURY_HEIGHT)
+	})
+}
+
+func init() {
+	initVersionBlockHeight()
+}
+
+//disable transfer tokens to contract address by cli
+func higherThanMercury(height int64) bool {
+	if milestoneMercuryHeight == 0 {
+		// milestoneMercuryHeight not enabled
+		return false
+	}
+	return height > milestoneMercuryHeight
+}
+
+
+//disable transfer tokens to contract address by cli
+func IsDisableTransferToContractBlock(height int64) bool {
+	return higherThanMercury(height)
+}
+
+//disable change the param EvmDenom by proposal
+func IsDisableChangeEvmDenomByProposal(height int64) bool {
+	return higherThanMercury(height)
+}
+
+//disable transfer tokens by module of cosmos-sdk/bank
+func IsDisableBankTransferBlock(height int64) bool {
+	return higherThanMercury(height)
+}

x/bank/handler.go

@@ -10,6 +10,11 @@ import (
 // NewHandler returns a handler for "bank" type messages.
 func NewHandler(k keeper.Keeper) sdk.Handler {
 	return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
+
+		if sdk.IsDisableBankTransferBlock(ctx.BlockHeight()) {
+			return nil, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, "bank message is disabled")
+		}
+
 		ctx = ctx.WithEventManager(sdk.NewEventManager())
 
 		switch msg := msg.(type) {