disable liquidity provision submission

Author: jeremyletang

processor/abci.go

@@ -25,6 +25,7 @@ import (
 var (
 	ErrPublicKeyExceededRateLimit                    = errors.New("public key exceeded the rate limit")
 	ErrPublicKeyCannotSubmitTransactionWithNoBalance = errors.New("public key cannot submit transaction with no balance")
+	ErrLiquidityProvisionCommandNotSupported         = errors.New("command LiquidityProvisionSubmittion is not supported")
 )
 
 type App struct {
@@ -268,6 +269,33 @@ func (app *App) OnCommit() (resp tmtypes.ResponseCommit) {
 func (app *App) OnCheckTx(ctx context.Context, _ tmtypes.RequestCheckTx, tx abci.Tx) (context.Context, tmtypes.ResponseCheckTx) {
 	resp := tmtypes.ResponseCheckTx{}
 
+	// FIXME(): The two following checks are here just to ensure
+	// some features are disabled in the .30.0 release.
+
+	// First we do not allow parties to create LiquidityProvision
+	if tx.Command() == txn.LiquidityProvisionCommand {
+		resp.Code = abci.AbciTxnValidationFailure
+		resp.Data = []byte(ErrLiquidityProvisionCommandNotSupported.Error())
+		return ctx, resp
+	}
+
+	// Second we check the proposal for a market
+	// would not submit a liquidity provision as part of it too.
+	if tx.Command() == txn.ProposeCommand {
+		s := &types.Proposal{}
+		if err := tx.Unmarshal(s); err != nil {
+			resp.Code = abci.AbciTxnDecodingFailure
+			return ctx, resp
+		}
+		if s.GetTerms() != nil &&
+			s.Terms.GetNewMarket() != nil &&
+			s.Terms.GetNewMarket().GetLiquidityCommitment() != nil {
+			resp.Code = abci.AbciTxnValidationFailure
+			resp.Data = []byte(ErrLiquidityProvisionCommandNotSupported.Error())
+			return ctx, resp
+		}
+	}
+
 	// Check ratelimits
 	limit, isval := app.limitPubkey(tx.PubKey())
 	if isval {