feat: add migrator

x/margin/migrations/v4_migration.go

@@ -0,0 +1,24 @@
+package migrations
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/elys-network/elys/x/margin/types"
+)
+
+func (m Migrator) V4Migration(ctx sdk.Context) error {
+	// reset params
+	params := types.NewParams()
+	m.keeper.SetParams(ctx, &params)
+
+	// reset mtps
+	for _, mtp := range m.keeper.GetAllMTPs(ctx) {
+		m.keeper.DestroyMTP(ctx, mtp.Address, mtp.Id)
+	}
+
+	// reset pools
+	for _, pool := range m.keeper.GetAllPools(ctx) {
+		m.keeper.RemovePool(ctx, pool.AmmPoolId)
+	}
+
+	return nil
+}

x/margin/module.go

@@ -117,7 +117,7 @@ func (am AppModule) RegisterServices(cfg module.Configurator) {
 	types.RegisterMsgServer(cfg.MsgServer(), keeper.NewMsgServerImpl(am.keeper))
 	types.RegisterQueryServer(cfg.QueryServer(), am.keeper)
 	m := migrations.NewMigrator(am.keeper)
-	err := cfg.RegisterMigration(types.ModuleName, 2, m.V3Migration)
+	err := cfg.RegisterMigration(types.ModuleName, 3, m.V4Migration)
 	if err != nil {
 		panic(err)
 	}
@@ -144,7 +144,7 @@ func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.Raw
 }
 
 // ConsensusVersion is a sequence number for state-breaking change of the module. It should be incremented on each consensus-breaking change introduced by the module. To avoid wrong/empty versions, the initial version should be set to 1
-func (AppModule) ConsensusVersion() uint64 { return 3 }
+func (AppModule) ConsensusVersion() uint64 { return 4 }
 
 // BeginBlock contains the logic that is automatically triggered at the beginning of each block
 func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock) {