feat: add version params to parameters

baseapp/baseapp.go

@@ -421,6 +421,13 @@ func (app *BaseApp) GetConsensusParams(ctx sdk.Context) *abci.ConsensusParams {
 		cp.Validator = &vp
 	}
 
+	if app.paramStore.Has(ctx, ParamStoreKeyVersionParams) {
+		var vp tmproto.VersionParams
+
+		app.paramStore.Get(ctx, ParamStoreKeyVersionParams, &vp)
+		cp.Version = &vp
+	}
+
 	return cp
 }
 
@@ -444,6 +451,7 @@ func (app *BaseApp) StoreConsensusParams(ctx sdk.Context, cp *abci.ConsensusPara
 	app.paramStore.Set(ctx, ParamStoreKeyBlockParams, cp.Block)
 	app.paramStore.Set(ctx, ParamStoreKeyEvidenceParams, cp.Evidence)
 	app.paramStore.Set(ctx, ParamStoreKeyValidatorParams, cp.Validator)
+	app.paramStore.Set(ctx, ParamStoreKeyVersionParams, cp.Version)
 }
 
 // getMaximumBlockGas gets the maximum gas from the consensus params. It panics

baseapp/params.go

@@ -18,6 +18,7 @@ var (
 	ParamStoreKeyBlockParams     = []byte("BlockParams")
 	ParamStoreKeyEvidenceParams  = []byte("EvidenceParams")
 	ParamStoreKeyValidatorParams = []byte("ValidatorParams")
+	ParamStoreKeyVersionParams   = []byte("VersionParams")
 )
 
 // ParamStore defines the interface the parameter store used by the BaseApp must
@@ -84,3 +85,14 @@ func ValidateValidatorParams(i interface{}) error {
 
 	return nil
 }
+
+// ValidateVersionParams defines a stateless validation on VersionParams. This
+// function is called whenever the parameters are updated or stored.
+func ValidateVersionParams(i interface{}) error {
+	_, ok := i.(tmproto.VersionParams)
+	if !ok {
+		return fmt.Errorf("invalid parameter type: %T", i)
+	}
+
+	return nil
+}

x/params/keeper/consensus_params.go

@@ -24,5 +24,8 @@ func ConsensusParamsKeyTable() types.KeyTable {
 		types.NewParamSetPair(
 			baseapp.ParamStoreKeyValidatorParams, tmproto.ValidatorParams{}, baseapp.ValidateValidatorParams,
 		),
+		types.NewParamSetPair(
+			baseapp.ParamStoreKeyVersionParams, tmproto.VersionParams{}, baseapp.ValidateVersionParams,
+		),
 	)
 }