feat(runtime,runtime/v2): skip store for specified modules (#20409)

2024-05-27 13:33:25 +02:00 · 2024-05-27 13:33:25 +02:00 · 190b20c398
commit 190b20c398
parent fe6361b617
13 changed files with 537 additions and 102 deletions
--- a/UPGRADING.md
+++ b/UPGRADING.md
@ -9,6 +9,7 @@ Note, always read the **SimApp** section for more information on application wir

 In this section we describe the changes made in Cosmos SDK' SimApp.
 **These changes are directly applicable to your application wiring.**
+Please read this section first, but for an exhaustive list of changes, refer to the [CHANGELOG](./simapp/CHANGELOG.md).

 #### Client (`root.go`)

@ -145,6 +146,23 @@ used as a TTL for the transaction and is used to provide replay protection. See
 [ADR-070](https://github.com/cosmos/cosmos-sdk/blob/main/docs/architecture/adr-070-unordered-transactions.md)
 for more details.

+### Depinject `app_config.go` / `app.yml`
+
+With the introduction of [environment in modules](#core-api), depinject automatically creates the environment for all modules.
+Learn more about environment [here](https://example.com) <!-- TODO -->. Given the fields of environment, this means runtime creates a kv store service for all modules by default.
+It can happen that some modules do not have a store necessary (such as `x/auth/tx` for instance). In this case, the store creation should be skipped in `app_config.go`:
+
+```diff
+InitGenesis: []string{
+	"..."
+},
+ // SkipStoreKeys is an optional list of store keys to skip when constructing the
+ // module's keeper. This is useful when a module does not have a store key.
+ SkipStoreKeys: []string{
+ 	"tx",
+ },
+```
+
 ### Protobuf

 The `cosmossdk.io/api/tendermint` package has been removed as CometBFT now publishes its protos to `buf.build/tendermint` and `buf.build/cometbft`.
@ -203,7 +221,7 @@ been added to avoid the use of the Accounts.String() method.
 +type MsgSimulatorFn func(r *rand.Rand, accs []Account, cdc address.Codec) (sdk.Msg, error)
 ```

-##### Dependency Injection
+##### Depinject

 Previously `cosmossdk.io/core` held functions `Invoke`, `Provide` and `Register` were moved to `cosmossdk.io/depinject/appconfig`.
 All modules using dependency injection must update their imports.
--- a/api/cosmos/app/runtime/v1alpha1/module.pulsar.go
+++ b/api/cosmos/app/runtime/v1alpha1/module.pulsar.go
@ -248,6 +248,52 @@ func (x *_Module_6_list) IsValid() bool {
 	return x.list != nil
 }

+var _ protoreflect.List = (*_Module_11_list)(nil)
+
+type _Module_11_list struct {
+	list *[]string
+}
+
+func (x *_Module_11_list) Len() int {
+	if x.list == nil {
+		return 0
+	}
+	return len(*x.list)
+}
+
+func (x *_Module_11_list) Get(i int) protoreflect.Value {
+	return protoreflect.ValueOfString((*x.list)[i])
+}
+
+func (x *_Module_11_list) Set(i int, value protoreflect.Value) {
+	valueUnwrapped := value.String()
+	concreteValue := valueUnwrapped
+	(*x.list)[i] = concreteValue
+}
+
+func (x *_Module_11_list) Append(value protoreflect.Value) {
+	valueUnwrapped := value.String()
+	concreteValue := valueUnwrapped
+	*x.list = append(*x.list, concreteValue)
+}
+
+func (x *_Module_11_list) AppendMutable() protoreflect.Value {
+	panic(fmt.Errorf("AppendMutable can not be called on message Module at list field SkipStoreKeys as it is not of Message kind"))
+}
+
+func (x *_Module_11_list) Truncate(n int) {
+	*x.list = (*x.list)[:n]
+}
+
+func (x *_Module_11_list) NewElement() protoreflect.Value {
+	v := ""
+	return protoreflect.ValueOfString(v)
+}
+
+func (x *_Module_11_list) IsValid() bool {
+	return x.list != nil
+}
+
 var _ protoreflect.List = (*_Module_7_list)(nil)

 type _Module_7_list struct {
@ -440,6 +486,7 @@ var (
 	fd_Module_init_genesis          protoreflect.FieldDescriptor
 	fd_Module_export_genesis        protoreflect.FieldDescriptor
 	fd_Module_override_store_keys   protoreflect.FieldDescriptor
+	fd_Module_skip_store_keys       protoreflect.FieldDescriptor
 	fd_Module_order_migrations      protoreflect.FieldDescriptor
 	fd_Module_precommiters          protoreflect.FieldDescriptor
 	fd_Module_prepare_check_staters protoreflect.FieldDescriptor
@ -455,6 +502,7 @@ func init() {
 	fd_Module_init_genesis = md_Module.Fields().ByName("init_genesis")
 	fd_Module_export_genesis = md_Module.Fields().ByName("export_genesis")
 	fd_Module_override_store_keys = md_Module.Fields().ByName("override_store_keys")
+	fd_Module_skip_store_keys = md_Module.Fields().ByName("skip_store_keys")
 	fd_Module_order_migrations = md_Module.Fields().ByName("order_migrations")
 	fd_Module_precommiters = md_Module.Fields().ByName("precommiters")
 	fd_Module_prepare_check_staters = md_Module.Fields().ByName("prepare_check_staters")
@ -562,6 +610,12 @@ func (x *fastReflection_Module) Range(f func(protoreflect.FieldDescriptor, proto
 			return
 		}
 	}
+	if len(x.SkipStoreKeys) != 0 {
+		value := protoreflect.ValueOfList(&_Module_11_list{list: &x.SkipStoreKeys})
+		if !f(fd_Module_skip_store_keys, value) {
+			return
+		}
+	}
 	if len(x.OrderMigrations) != 0 {
 		value := protoreflect.ValueOfList(&_Module_7_list{list: &x.OrderMigrations})
 		if !f(fd_Module_order_migrations, value) {
@ -613,6 +667,8 @@ func (x *fastReflection_Module) Has(fd protoreflect.FieldDescriptor) bool {
 		return len(x.ExportGenesis) != 0
 	case "cosmos.app.runtime.v1alpha1.Module.override_store_keys":
 		return len(x.OverrideStoreKeys) != 0
+	case "cosmos.app.runtime.v1alpha1.Module.skip_store_keys":
+		return len(x.SkipStoreKeys) != 0
 	case "cosmos.app.runtime.v1alpha1.Module.order_migrations":
 		return len(x.OrderMigrations) != 0
 	case "cosmos.app.runtime.v1alpha1.Module.precommiters":
@ -649,6 +705,8 @@ func (x *fastReflection_Module) Clear(fd protoreflect.FieldDescriptor) {
 		x.ExportGenesis = nil
 	case "cosmos.app.runtime.v1alpha1.Module.override_store_keys":
 		x.OverrideStoreKeys = nil
+	case "cosmos.app.runtime.v1alpha1.Module.skip_store_keys":
+		x.SkipStoreKeys = nil
 	case "cosmos.app.runtime.v1alpha1.Module.order_migrations":
 		x.OrderMigrations = nil
 	case "cosmos.app.runtime.v1alpha1.Module.precommiters":
@ -706,6 +764,12 @@ func (x *fastReflection_Module) Get(descriptor protoreflect.FieldDescriptor) pro
 		}
 		listValue := &_Module_6_list{list: &x.OverrideStoreKeys}
 		return protoreflect.ValueOfList(listValue)
+	case "cosmos.app.runtime.v1alpha1.Module.skip_store_keys":
+		if len(x.SkipStoreKeys) == 0 {
+			return protoreflect.ValueOfList(&_Module_11_list{})
+		}
+		listValue := &_Module_11_list{list: &x.SkipStoreKeys}
+		return protoreflect.ValueOfList(listValue)
 	case "cosmos.app.runtime.v1alpha1.Module.order_migrations":
 		if len(x.OrderMigrations) == 0 {
 			return protoreflect.ValueOfList(&_Module_7_list{})
@ -772,6 +836,10 @@ func (x *fastReflection_Module) Set(fd protoreflect.FieldDescriptor, value proto
 		lv := value.List()
 		clv := lv.(*_Module_6_list)
 		x.OverrideStoreKeys = *clv.list
+	case "cosmos.app.runtime.v1alpha1.Module.skip_store_keys":
+		lv := value.List()
+		clv := lv.(*_Module_11_list)
+		x.SkipStoreKeys = *clv.list
 	case "cosmos.app.runtime.v1alpha1.Module.order_migrations":
 		lv := value.List()
 		clv := lv.(*_Module_7_list)
@ -838,6 +906,12 @@ func (x *fastReflection_Module) Mutable(fd protoreflect.FieldDescriptor) protore
 		}
 		value := &_Module_6_list{list: &x.OverrideStoreKeys}
 		return protoreflect.ValueOfList(value)
+	case "cosmos.app.runtime.v1alpha1.Module.skip_store_keys":
+		if x.SkipStoreKeys == nil {
+			x.SkipStoreKeys = []string{}
+		}
+		value := &_Module_11_list{list: &x.SkipStoreKeys}
+		return protoreflect.ValueOfList(value)
 	case "cosmos.app.runtime.v1alpha1.Module.order_migrations":
 		if x.OrderMigrations == nil {
 			x.OrderMigrations = []string{}
@ -894,6 +968,9 @@ func (x *fastReflection_Module) NewField(fd protoreflect.FieldDescriptor) protor
 	case "cosmos.app.runtime.v1alpha1.Module.override_store_keys":
 		list := []*StoreKeyConfig{}
 		return protoreflect.ValueOfList(&_Module_6_list{list: &list})
+	case "cosmos.app.runtime.v1alpha1.Module.skip_store_keys":
+		list := []string{}
+		return protoreflect.ValueOfList(&_Module_11_list{list: &list})
 	case "cosmos.app.runtime.v1alpha1.Module.order_migrations":
 		list := []string{}
 		return protoreflect.ValueOfList(&_Module_7_list{list: &list})
@ -1009,6 +1086,12 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 				n += 1 + l + runtime.Sov(uint64(l))
 			}
 		}
+		if len(x.SkipStoreKeys) > 0 {
+			for _, s := range x.SkipStoreKeys {
+				l = len(s)
+				n += 1 + l + runtime.Sov(uint64(l))
+			}
+		}
 		if len(x.OrderMigrations) > 0 {
 			for _, s := range x.OrderMigrations {
 				l = len(s)
@ -1062,6 +1145,15 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 			i -= len(x.unknownFields)
 			copy(dAtA[i:], x.unknownFields)
 		}
+		if len(x.SkipStoreKeys) > 0 {
+			for iNdEx := len(x.SkipStoreKeys) - 1; iNdEx >= 0; iNdEx-- {
+				i -= len(x.SkipStoreKeys[iNdEx])
+				copy(dAtA[i:], x.SkipStoreKeys[iNdEx])
+				i = runtime.EncodeVarint(dAtA, i, uint64(len(x.SkipStoreKeys[iNdEx])))
+				i--
+				dAtA[i] = 0x5a
+			}
+		}
 		if len(x.PreBlockers) > 0 {
 			for iNdEx := len(x.PreBlockers) - 1; iNdEx >= 0; iNdEx-- {
 				i -= len(x.PreBlockers[iNdEx])
@ -1400,6 +1492,38 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, err
 				}
 				iNdEx = postIndex
+			case 11:
+				if wireType != 2 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field SkipStoreKeys", wireType)
+				}
+				var stringLen uint64
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrIntOverflow
+					}
+					if iNdEx >= l {
+						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					stringLen |= uint64(b&0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+				intStringLen := int(stringLen)
+				if intStringLen < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				postIndex := iNdEx + intStringLen
+				if postIndex < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				if postIndex > l {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+				}
+				x.SkipStoreKeys = append(x.SkipStoreKeys, string(dAtA[iNdEx:postIndex]))
+				iNdEx = postIndex
 			case 7:
 				if wireType != 2 {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field OrderMigrations", wireType)
@ -2087,6 +2211,10 @@ type Module struct {
 	// override_store_keys is an optional list of overrides for the module store keys
 	// to be used in keeper construction.
 	OverrideStoreKeys []*StoreKeyConfig `protobuf:"bytes,6,rep,name=override_store_keys,json=overrideStoreKeys,proto3" json:"override_store_keys,omitempty"`
+	// skip_store_keys is an optional list of store keys to skip when constructing the
+	// module's keeper. This is useful when a module does not have a store key.
+	// NOTE: the provided environment variable will have a fake store service.
+	SkipStoreKeys []string `protobuf:"bytes,11,rep,name=skip_store_keys,json=skipStoreKeys,proto3" json:"skip_store_keys,omitempty"`
 	// order_migrations defines the order in which module migrations are performed.
 	// If this is left empty, it uses the default migration order.
 	// https://pkg.go.dev/github.com/cosmos/cosmos-sdk@v0.47.0-alpha2/types/module#DefaultMigrationsOrder
@ -2167,6 +2295,13 @@ func (x *Module) GetOverrideStoreKeys() []*StoreKeyConfig {
 	return nil
 }

+func (x *Module) GetSkipStoreKeys() []string {
+	if x != nil {
+		return x.SkipStoreKeys
+	}
+	return nil
+}
+
 func (x *Module) GetOrderMigrations() []string {
 	if x != nil {
 		return x.OrderMigrations
@ -2251,7 +2386,7 @@ var file_cosmos_app_runtime_v1alpha1_module_proto_rawDesc = []byte{
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-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
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+	0x61, 0x6c, 0x70, 0x68, 0x61, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }

 var (
--- a/api/cosmos/app/runtime/v2/module.pulsar.go
+++ b/api/cosmos/app/runtime/v2/module.pulsar.go
@ -386,6 +386,52 @@ func (x *_Module_10_list) IsValid() bool {
 	return x.list != nil
 }

+var _ protoreflect.List = (*_Module_11_list)(nil)
+
+type _Module_11_list struct {
+	list *[]string
+}
+
+func (x *_Module_11_list) Len() int {
+	if x.list == nil {
+		return 0
+	}
+	return len(*x.list)
+}
+
+func (x *_Module_11_list) Get(i int) protoreflect.Value {
+	return protoreflect.ValueOfString((*x.list)[i])
+}
+
+func (x *_Module_11_list) Set(i int, value protoreflect.Value) {
+	valueUnwrapped := value.String()
+	concreteValue := valueUnwrapped
+	(*x.list)[i] = concreteValue
+}
+
+func (x *_Module_11_list) Append(value protoreflect.Value) {
+	valueUnwrapped := value.String()
+	concreteValue := valueUnwrapped
+	*x.list = append(*x.list, concreteValue)
+}
+
+func (x *_Module_11_list) AppendMutable() protoreflect.Value {
+	panic(fmt.Errorf("AppendMutable can not be called on message Module at list field SkipStoreKeys as it is not of Message kind"))
+}
+
+func (x *_Module_11_list) Truncate(n int) {
+	*x.list = (*x.list)[:n]
+}
+
+func (x *_Module_11_list) NewElement() protoreflect.Value {
+	v := ""
+	return protoreflect.ValueOfString(v)
+}
+
+func (x *_Module_11_list) IsValid() bool {
+	return x.list != nil
+}
+
 var (
 	md_Module                     protoreflect.MessageDescriptor
 	fd_Module_app_name            protoreflect.FieldDescriptor
@ -398,6 +444,7 @@ var (
 	fd_Module_order_migrations    protoreflect.FieldDescriptor
 	fd_Module_gas_config          protoreflect.FieldDescriptor
 	fd_Module_override_store_keys protoreflect.FieldDescriptor
+	fd_Module_skip_store_keys     protoreflect.FieldDescriptor
 )

 func init() {
@ -413,6 +460,7 @@ func init() {
 	fd_Module_order_migrations = md_Module.Fields().ByName("order_migrations")
 	fd_Module_gas_config = md_Module.Fields().ByName("gas_config")
 	fd_Module_override_store_keys = md_Module.Fields().ByName("override_store_keys")
+	fd_Module_skip_store_keys = md_Module.Fields().ByName("skip_store_keys")
 }

 var _ protoreflect.Message = (*fastReflection_Module)(nil)
@ -540,6 +588,12 @@ func (x *fastReflection_Module) Range(f func(protoreflect.FieldDescriptor, proto
 			return
 		}
 	}
+	if len(x.SkipStoreKeys) != 0 {
+		value := protoreflect.ValueOfList(&_Module_11_list{list: &x.SkipStoreKeys})
+		if !f(fd_Module_skip_store_keys, value) {
+			return
+		}
+	}
 }

 // Has reports whether a field is populated.
@ -575,6 +629,8 @@ func (x *fastReflection_Module) Has(fd protoreflect.FieldDescriptor) bool {
 		return x.GasConfig != nil
 	case "cosmos.app.runtime.v2.Module.override_store_keys":
 		return len(x.OverrideStoreKeys) != 0
+	case "cosmos.app.runtime.v2.Module.skip_store_keys":
+		return len(x.SkipStoreKeys) != 0
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.app.runtime.v2.Module"))
@ -611,6 +667,8 @@ func (x *fastReflection_Module) Clear(fd protoreflect.FieldDescriptor) {
 		x.GasConfig = nil
 	case "cosmos.app.runtime.v2.Module.override_store_keys":
 		x.OverrideStoreKeys = nil
+	case "cosmos.app.runtime.v2.Module.skip_store_keys":
+		x.SkipStoreKeys = nil
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.app.runtime.v2.Module"))
@ -681,6 +739,12 @@ func (x *fastReflection_Module) Get(descriptor protoreflect.FieldDescriptor) pro
 		}
 		listValue := &_Module_10_list{list: &x.OverrideStoreKeys}
 		return protoreflect.ValueOfList(listValue)
+	case "cosmos.app.runtime.v2.Module.skip_store_keys":
+		if len(x.SkipStoreKeys) == 0 {
+			return protoreflect.ValueOfList(&_Module_11_list{})
+		}
+		listValue := &_Module_11_list{list: &x.SkipStoreKeys}
+		return protoreflect.ValueOfList(listValue)
 	default:
 		if descriptor.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.app.runtime.v2.Module"))
@ -737,6 +801,10 @@ func (x *fastReflection_Module) Set(fd protoreflect.FieldDescriptor, value proto
 		lv := value.List()
 		clv := lv.(*_Module_10_list)
 		x.OverrideStoreKeys = *clv.list
+	case "cosmos.app.runtime.v2.Module.skip_store_keys":
+		lv := value.List()
+		clv := lv.(*_Module_11_list)
+		x.SkipStoreKeys = *clv.list
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.app.runtime.v2.Module"))
@ -810,6 +878,12 @@ func (x *fastReflection_Module) Mutable(fd protoreflect.FieldDescriptor) protore
 		}
 		value := &_Module_10_list{list: &x.OverrideStoreKeys}
 		return protoreflect.ValueOfList(value)
+	case "cosmos.app.runtime.v2.Module.skip_store_keys":
+		if x.SkipStoreKeys == nil {
+			x.SkipStoreKeys = []string{}
+		}
+		value := &_Module_11_list{list: &x.SkipStoreKeys}
+		return protoreflect.ValueOfList(value)
 	case "cosmos.app.runtime.v2.Module.app_name":
 		panic(fmt.Errorf("field app_name of message cosmos.app.runtime.v2.Module is not mutable"))
 	default:
@ -854,6 +928,9 @@ func (x *fastReflection_Module) NewField(fd protoreflect.FieldDescriptor) protor
 	case "cosmos.app.runtime.v2.Module.override_store_keys":
 		list := []*StoreKeyConfig{}
 		return protoreflect.ValueOfList(&_Module_10_list{list: &list})
+	case "cosmos.app.runtime.v2.Module.skip_store_keys":
+		list := []string{}
+		return protoreflect.ValueOfList(&_Module_11_list{list: &list})
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.app.runtime.v2.Module"))
@ -979,6 +1056,12 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 				n += 1 + l + runtime.Sov(uint64(l))
 			}
 		}
+		if len(x.SkipStoreKeys) > 0 {
+			for _, s := range x.SkipStoreKeys {
+				l = len(s)
+				n += 1 + l + runtime.Sov(uint64(l))
+			}
+		}
 		if x.unknownFields != nil {
 			n += len(x.unknownFields)
 		}
@ -1008,6 +1091,15 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 			i -= len(x.unknownFields)
 			copy(dAtA[i:], x.unknownFields)
 		}
+		if len(x.SkipStoreKeys) > 0 {
+			for iNdEx := len(x.SkipStoreKeys) - 1; iNdEx >= 0; iNdEx-- {
+				i -= len(x.SkipStoreKeys[iNdEx])
+				copy(dAtA[i:], x.SkipStoreKeys[iNdEx])
+				i = runtime.EncodeVarint(dAtA, i, uint64(len(x.SkipStoreKeys[iNdEx])))
+				i--
+				dAtA[i] = 0x5a
+			}
+		}
 		if len(x.OverrideStoreKeys) > 0 {
 			for iNdEx := len(x.OverrideStoreKeys) - 1; iNdEx >= 0; iNdEx-- {
 				encoded, err := options.Marshal(x.OverrideStoreKeys[iNdEx])
@ -1483,6 +1575,38 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, err
 				}
 				iNdEx = postIndex
+			case 11:
+				if wireType != 2 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field SkipStoreKeys", wireType)
+				}
+				var stringLen uint64
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrIntOverflow
+					}
+					if iNdEx >= l {
+						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					stringLen |= uint64(b&0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+				intStringLen := int(stringLen)
+				if intStringLen < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				postIndex := iNdEx + intStringLen
+				if postIndex < 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrInvalidLength
+				}
+				if postIndex > l {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+				}
+				x.SkipStoreKeys = append(x.SkipStoreKeys, string(dAtA[iNdEx:postIndex]))
+				iNdEx = postIndex
 			default:
 				iNdEx = preIndex
 				skippy, err := runtime.Skip(dAtA[iNdEx:])
@ -2547,13 +2671,17 @@ type Module struct {
 	// if it is specified.
 	ExportGenesis []string `protobuf:"bytes,7,rep,name=export_genesis,json=exportGenesis,proto3" json:"export_genesis,omitempty"`
 	// order_migrations defines the order in which module migrations are performed.
-	// If this is left empty, it uses the default migration order (alphabeticaly).
+	// If this is left empty, it uses the default migration order (alphabetically).
 	OrderMigrations []string `protobuf:"bytes,8,rep,name=order_migrations,json=orderMigrations,proto3" json:"order_migrations,omitempty"`
 	// GasConfig is the config object for gas limits.
 	GasConfig *GasConfig `protobuf:"bytes,9,opt,name=gas_config,json=gasConfig,proto3" json:"gas_config,omitempty"`
 	// override_store_keys is an optional list of overrides for the module store keys
 	// to be used in keeper construction.
 	OverrideStoreKeys []*StoreKeyConfig `protobuf:"bytes,10,rep,name=override_store_keys,json=overrideStoreKeys,proto3" json:"override_store_keys,omitempty"`
+	// skip_store_keys is an optional list of store keys to skip when constructing the
+	// module's keeper. This is useful when a module does not have a store key.
+	// NOTE: the provided environment variable will have a fake store service.
+	SkipStoreKeys []string `protobuf:"bytes,11,rep,name=skip_store_keys,json=skipStoreKeys,proto3" json:"skip_store_keys,omitempty"`
 }

 func (x *Module) Reset() {
@ -2646,6 +2774,13 @@ func (x *Module) GetOverrideStoreKeys() []*StoreKeyConfig {
 	return nil
 }

+func (x *Module) GetSkipStoreKeys() []string {
+	if x != nil {
+		return x.SkipStoreKeys
+	}
+	return nil
+}
+
 // GasConfig is the config object for gas limits.
 type GasConfig struct {
 	state         protoimpl.MessageState
@ -2753,7 +2888,7 @@ var file_cosmos_app_runtime_v2_module_proto_rawDesc = []byte{
 	0x72, 0x6f, 0x74, 0x6f, 0x12, 0x15, 0x63, 0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x2e, 0x61, 0x70, 0x70,
 	0x2e, 0x72, 0x75, 0x6e, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x32, 0x1a, 0x20, 0x63, 0x6f, 0x73,
 	0x6d, 0x6f, 0x73, 0x2f, 0x61, 0x70, 0x70, 0x2f, 0x76, 0x31, 0x61, 0x6c, 0x70, 0x68, 0x61, 0x31,
-	0x2f, 0x6d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xfa, 0x03,
+	0x2f, 0x6d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xa2, 0x04,
 	0x0a, 0x06, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x12, 0x19, 0x0a, 0x08, 0x61, 0x70, 0x70, 0x5f,
 	0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x61, 0x70, 0x70, 0x4e,
 	0x61, 0x6d, 0x65, 0x12, 0x21, 0x0a, 0x0c, 0x70, 0x72, 0x65, 0x5f, 0x62, 0x6c, 0x6f, 0x63, 0x6b,
@ -2782,39 +2917,41 @@ var file_cosmos_app_runtime_v2_module_proto_rawDesc = []byte{
 	0x73, 0x2e, 0x61, 0x70, 0x70, 0x2e, 0x72, 0x75, 0x6e, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x32,
 	0x2e, 0x53, 0x74, 0x6f, 0x72, 0x65, 0x4b, 0x65, 0x79, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52,
 	0x11, 0x6f, 0x76, 0x65, 0x72, 0x72, 0x69, 0x64, 0x65, 0x53, 0x74, 0x6f, 0x72, 0x65, 0x4b, 0x65,
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 }

 var (
--- a/api/go.mod
+++ b/api/go.mod
@ -2,8 +2,6 @@ module cosmossdk.io/api

 go 1.21

-toolchain go1.22.1
-
 require (
 	buf.build/gen/go/cometbft/cometbft/protocolbuffers/go v1.34.1-20240312114316-c0d3497e35d6.1
 	github.com/cosmos/cosmos-proto v1.0.0-beta.5
--- a/go.work.example
+++ b/go.work.example
@ -1,7 +1,5 @@
 go 1.22.2

-toolchain go1.22.2
-
 use (
 	.
 	./api
--- a/proto/cosmos/app/runtime/v1alpha1/module.proto
+++ b/proto/cosmos/app/runtime/v1alpha1/module.proto
@ -38,6 +38,11 @@ message Module {
  // to be used in keeper construction.
  repeated StoreKeyConfig override_store_keys = 6;

+  // skip_store_keys is an optional list of store keys to skip when constructing the
+  // module's keeper. This is useful when a module does not have a store key.
+  // NOTE: the provided environment variable will have a fake store service.
+  repeated string skip_store_keys = 11;
+
  // order_migrations defines the order in which module migrations are performed.
  // If this is left empty, it uses the default migration order.
  // https://pkg.go.dev/github.com/cosmos/cosmos-sdk@v0.47.0-alpha2/types/module#DefaultMigrationsOrder
--- a/proto/cosmos/app/runtime/v2/module.proto
+++ b/proto/cosmos/app/runtime/v2/module.proto
@ -53,6 +53,11 @@ message Module {
  // override_store_keys is an optional list of overrides for the module store keys
  // to be used in keeper construction.
  repeated StoreKeyConfig override_store_keys = 10;
+
+  // skip_store_keys is an optional list of store keys to skip when constructing the
+  // module's keeper. This is useful when a module does not have a store key.
+  // NOTE: the provided environment variable will have a fake store service.
+  repeated string skip_store_keys = 11;
 }

 // GasConfig is the config object for gas limits.
--- a/runtime/module.go
+++ b/runtime/module.go
@ -3,6 +3,7 @@ package runtime
 import (
 	"fmt"
 	"os"
+	"slices"

 	"github.com/cosmos/gogoproto/proto"
 	"google.golang.org/protobuf/reflect/protodesc"
@ -192,6 +193,10 @@ func ProvideKVStoreKey(
 	key depinject.ModuleKey,
 	app *AppBuilder,
 ) *storetypes.KVStoreKey {
+	if slices.Contains(config.SkipStoreKeys, key.Name()) {
+		return nil
+	}
+
 	override := storeKeyOverride(config, key.Name())

 	var storeKeyName string
@ -206,13 +211,29 @@ func ProvideKVStoreKey(
 	return storeKey
 }

-func ProvideTransientStoreKey(key depinject.ModuleKey, app *AppBuilder) *storetypes.TransientStoreKey {
+func ProvideTransientStoreKey(
+	config *runtimev1alpha1.Module,
+	key depinject.ModuleKey,
+	app *AppBuilder,
+) *storetypes.TransientStoreKey {
+	if slices.Contains(config.SkipStoreKeys, key.Name()) {
+		return nil
+	}
+
 	storeKey := storetypes.NewTransientStoreKey(fmt.Sprintf("transient:%s", key.Name()))
 	registerStoreKey(app, storeKey)
 	return storeKey
 }

-func ProvideMemoryStoreKey(key depinject.ModuleKey, app *AppBuilder) *storetypes.MemoryStoreKey {
+func ProvideMemoryStoreKey(
+	config *runtimev1alpha1.Module,
+	key depinject.ModuleKey,
+	app *AppBuilder,
+) *storetypes.MemoryStoreKey {
+	if slices.Contains(config.SkipStoreKeys, key.Name()) {
+		return nil
+	}
+
 	storeKey := storetypes.NewMemoryStoreKey(fmt.Sprintf("memory:%s", key.Name()))
 	registerStoreKey(app, storeKey)
 	return storeKey
@ -234,23 +255,39 @@ func ProvideEnvironment(
 	msgServiceRouter *baseapp.MsgServiceRouter,
 	queryServiceRouter *baseapp.GRPCQueryRouter,
 ) (store.KVStoreService, store.MemoryStoreService, appmodule.Environment) {
-	storeKey := ProvideKVStoreKey(config, key, app)
-	kvService := kvStoreService{key: storeKey}
+	var (
+		kvService    store.KVStoreService     = failingStoreService{}
+		memKvService store.MemoryStoreService = failingStoreService{}
+	)

-	memStoreKey := ProvideMemoryStoreKey(key, app)
-	memStoreService := memStoreService{key: memStoreKey}
+	// skips modules that have no store
+	if !slices.Contains(config.SkipStoreKeys, key.Name()) {
+		storeKey := ProvideKVStoreKey(config, key, app)
+		kvService = kvStoreService{key: storeKey}

-	return kvService, memStoreService, NewEnvironment(
+		memStoreKey := ProvideMemoryStoreKey(config, key, app)
+		memKvService = memStoreService{key: memStoreKey}
+	}
+
+	return kvService, memKvService, NewEnvironment(
 		kvService,
 		logger.With(log.ModuleKey, fmt.Sprintf("x/%s", key.Name())),
 		EnvWithMsgRouterService(msgServiceRouter),
 		EnvWithQueryRouterService(queryServiceRouter),
-		EnvWithMemStoreService(memStoreService),
+		EnvWithMemStoreService(memKvService),
 	)
 }

-func ProvideTransientStoreService(key depinject.ModuleKey, app *AppBuilder) store.TransientStoreService {
-	storeKey := ProvideTransientStoreKey(key, app)
+func ProvideTransientStoreService(
+	config *runtimev1alpha1.Module,
+	key depinject.ModuleKey,
+	app *AppBuilder,
+) store.TransientStoreService {
+	storeKey := ProvideTransientStoreKey(config, key, app)
+	if storeKey == nil {
+		return failingStoreService{}
+	}
+
 	return transientStoreService{key: storeKey}
 }

--- a/runtime/store.go
+++ b/runtime/store.go
@ -48,6 +48,20 @@ func (t transientStoreService) OpenTransientStore(ctx context.Context) store.KVS
 	return newKVStore(sdk.UnwrapSDKContext(ctx).KVStore(t.key))
 }

+type failingStoreService struct{}
+
+func (failingStoreService) OpenKVStore(ctx context.Context) store.KVStore {
+	panic("kv store service not available for this module: verify runtime `skip_store_keys` app config if not expected")
+}
+
+func (failingStoreService) OpenMemoryStore(ctx context.Context) store.KVStore {
+	panic("memory kv store service not available for this module: verify runtime `skip_store_keys` app config if not expected")
+}
+
+func (failingStoreService) OpenTransientStore(ctx context.Context) store.KVStore {
+	panic("transient kv store service not available for this module: verify runtime `skip_store_keys` app config if not expected")
+}
+
 // CoreKVStore is a wrapper of Core/Store kvstore interface
 // Remove after https://github.com/cosmos/cosmos-sdk/issues/14714 is closed
 type coreKVStore struct {
--- a/runtime/v2/module.go
+++ b/runtime/v2/module.go
@ -3,6 +3,7 @@ package runtime
 import (
 	"fmt"
 	"os"
+	"slices"

 	"github.com/cosmos/gogoproto/proto"
 	"google.golang.org/grpc"
@ -185,19 +186,28 @@ func ProvideEnvironment(logger log.Logger, config *runtimev2.Module, key depinje
 	store.KVStoreService,
 	store.MemoryStoreService,
 ) {
-	var kvStoreKey string
-	storeKeyOverride := storeKeyOverride(config, key.Name())
-	if storeKeyOverride != nil {
-		kvStoreKey = storeKeyOverride.KvStoreKey
-	} else {
-		kvStoreKey = key.Name()
-	}
-	registerStoreKey(appBuilder, kvStoreKey)
-	kvService := stf.NewKVStoreService([]byte(kvStoreKey))
+	var (
+		kvService    store.KVStoreService     = failingStoreService{}
+		memKvService store.MemoryStoreService = failingStoreService{}
+	)

-	memStoreKey := fmt.Sprintf("memory:%s", key.Name())
-	registerStoreKey(appBuilder, memStoreKey)
-	memService := stf.NewMemoryStoreService([]byte(memStoreKey))
+	// skips modules that have no store
+	if !slices.Contains(config.SkipStoreKeys, key.Name()) {
+		var kvStoreKey string
+		storeKeyOverride := storeKeyOverride(config, key.Name())
+		if storeKeyOverride != nil {
+			kvStoreKey = storeKeyOverride.KvStoreKey
+		} else {
+			kvStoreKey = key.Name()
+		}
+
+		registerStoreKey(appBuilder, kvStoreKey)
+		kvService = stf.NewKVStoreService([]byte(kvStoreKey))
+
+		memStoreKey := fmt.Sprintf("memory:%s", key.Name())
+		registerStoreKey(appBuilder, memStoreKey)
+		memKvService = stf.NewMemoryStoreService([]byte(memStoreKey))
+	}

 	env := appmodulev2.Environment{
 		Logger:             logger,
@ -209,10 +219,10 @@ func ProvideEnvironment(logger log.Logger, config *runtimev2.Module, key depinje
 		MsgRouterService:   stf.NewMsgRouterService(appBuilder.app.msgRouterBuilder),
 		TransactionService: services.NewContextAwareTransactionService(),
 		KVStoreService:     kvService,
-		MemStoreService:    memService,
+		MemStoreService:    memKvService,
 	}

-	return env, kvService, memService
+	return env, kvService, memKvService
 }

 func registerStoreKey(wrapper *AppBuilder, key string) {
--- a/runtime/v2/stub.go
+++ b/runtime/v2/stub.go
@ -0,0 +1,21 @@
+package runtime
+
+import (
+	"context"
+
+	"cosmossdk.io/core/store"
+)
+
+type failingStoreService struct{}
+
+func (failingStoreService) OpenKVStore(ctx context.Context) store.KVStore {
+	panic("kv store service not available for this module: verify runtime `skip_store_keys` app config if not expected")
+}
+
+func (failingStoreService) OpenMemoryStore(ctx context.Context) store.KVStore {
+	panic("memory kv store service not available for this module: verify runtime `skip_store_keys` app config if not expected")
+}
+
+func (failingStoreService) OpenTransientStore(ctx context.Context) store.KVStore {
+	panic("transient kv store service not available for this module: verify runtime `skip_store_keys` app config if not expected")
+}
--- a/simapp/CHANGELOG.md
+++ b/simapp/CHANGELOG.md
@ -0,0 +1,50 @@
+<!--
+Guiding Principles:
+Changelogs are for humans, not machines.
+There should be an entry for every single version.
+The same types of changes should be grouped.
+Versions and sections should be linkable.
+The latest version comes first.
+The release date of each version is displayed.
+Mention whether you follow Semantic Versioning.
+Usage:
+Change log entries are to be added to the Unreleased section under the
+appropriate stanza (see below). Each entry should ideally include a tag and
+the Github issue reference in the following format:
+* (<tag>) [#<issue-number>] Changelog message.
+Types of changes (Stanzas):
+"Features" for new features.
+"Improvements" for changes in existing functionality.
+"Deprecated" for soon-to-be removed features.
+"Bug Fixes" for any bug fixes.
+"API Breaking" for breaking exported APIs used by developers building on SDK.
+Ref: https://keepachangelog.com/en/1.0.0/
+-->
+
+# Changelog
+
+`SimApp` is an application built using the Cosmos SDK for testing and educational purposes.
+It won't be tagged or intented to be imported in an application.
+This changelog is aimed to help developers understand the wiring changes between SDK versions.
+It is an exautive list of changes that completes the SimApp section in the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#simapp)
+
+## v0.50 to v0.51
+
+Always refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md) to understand the changes.
+
+* [#20409](https://github.com/cosmos/cosmos-sdk/pull/20409) Add `tx` as `SkipStoreKeys` in `app_config.go`.
+
+<!-- TODO: move changelog.md elements to here -->
+
+## v0.47 to v0.50
+
+No changelog is provided for this migration. Please refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#v050x)
+
+## v0.46 to v0.47
+
+No changelog is provided for this migration. Please refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#v047x)
+
+## v0.45 to v0.46
+
+No changelog is provided for this migration. Please refer to the [UPGRADING.md](https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md#v046x)
+
--- a/simapp/app_config.go
+++ b/simapp/app_config.go
@ -170,6 +170,11 @@ var (
 					// ExportGenesis: []string{},
 					// Uncomment if you want to set a custom migration order here.
 					// OrderMigrations: []string{},
+					// SkipStoreKeys is an optional list of store keys to skip when constructing the
+					// module's keeper. This is useful when a module does not have a store key.
+					SkipStoreKeys: []string{
+						"tx",
+					},
 				}),
 			},
 			{