From 89296ccdd310a0ffa7c4a10426d855759dfb5dfc Mon Sep 17 00:00:00 2001
From: emidev98 <49301655+emidev98@users.noreply.github.com>
Date: Fri, 10 Nov 2023 17:17:56 +0200
Subject: [PATCH] feat(x/gov): extend governance config (#18428)

---
 CHANGELOG.md                              |   1 +
 api/cosmos/gov/module/v1/module.pulsar.go | 163 +++++++++++++++++++---
 proto/cosmos/gov/module/v1/module.proto   |   8 ++
 x/gov/README.md                           |   4 +-
 x/gov/go.mod                              |   1 +
 x/gov/go.sum                              |   2 -
 x/gov/keeper/keeper.go                    |  41 +++++-
 x/gov/keeper/msg_server_test.go           |  21 ++-
 x/gov/keeper/proposal.go                  |  19 +--
 x/gov/module.go                           |   6 +
 x/gov/types/config.go                     |   8 +-
 x/gov/types/errors.go                     |   1 +
 12 files changed, 228 insertions(+), 47 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a01a7359e891..2a81ebc3f50b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,6 +53,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Improvements
 
+* (x/gov) [#18428](https://github.com/cosmos/cosmos-sdk/pull/18428) Extend governance config 
 * (x/gov) [#18189](https://github.com/cosmos/cosmos-sdk/pull/18189) Limit the accepted deposit coins for a proposal to the minimum proposal deposit denoms.
 * (x/gov) [#18025](https://github.com/cosmos/cosmos-sdk/pull/18025) Improve `<appd> q gov proposer` by querying directly a proposal instead of tx events. It is an alias of `q gov proposal` as the proposer is a field of the proposal.
 * (client) [#17503](https://github.com/cosmos/cosmos-sdk/pull/17503) Add `client.Context{}.WithAddressCodec`, `WithValidatorAddressCodec`, `WithConsensusAddressCodec` to provide address codecs to the client context. See the [UPGRADING.md](./UPGRADING.md) for more details.
diff --git a/api/cosmos/gov/module/v1/module.pulsar.go b/api/cosmos/gov/module/v1/module.pulsar.go
index 5785941ffa9b..2df55ac73881 100644
--- a/api/cosmos/gov/module/v1/module.pulsar.go
+++ b/api/cosmos/gov/module/v1/module.pulsar.go
@@ -17,6 +17,8 @@ var (
 	md_Module                  protoreflect.MessageDescriptor
 	fd_Module_max_metadata_len protoreflect.FieldDescriptor
 	fd_Module_authority        protoreflect.FieldDescriptor
+	fd_Module_max_title_len    protoreflect.FieldDescriptor
+	fd_Module_max_summary_len  protoreflect.FieldDescriptor
 )
 
 func init() {
@@ -24,6 +26,8 @@ func init() {
 	md_Module = File_cosmos_gov_module_v1_module_proto.Messages().ByName("Module")
 	fd_Module_max_metadata_len = md_Module.Fields().ByName("max_metadata_len")
 	fd_Module_authority = md_Module.Fields().ByName("authority")
+	fd_Module_max_title_len = md_Module.Fields().ByName("max_title_len")
+	fd_Module_max_summary_len = md_Module.Fields().ByName("max_summary_len")
 }
 
 var _ protoreflect.Message = (*fastReflection_Module)(nil)
@@ -103,6 +107,18 @@ func (x *fastReflection_Module) Range(f func(protoreflect.FieldDescriptor, proto
 			return
 		}
 	}
+	if x.MaxTitleLen != uint64(0) {
+		value := protoreflect.ValueOfUint64(x.MaxTitleLen)
+		if !f(fd_Module_max_title_len, value) {
+			return
+		}
+	}
+	if x.MaxSummaryLen != uint64(0) {
+		value := protoreflect.ValueOfUint64(x.MaxSummaryLen)
+		if !f(fd_Module_max_summary_len, value) {
+			return
+		}
+	}
 }
 
 // Has reports whether a field is populated.
@@ -122,6 +138,10 @@ func (x *fastReflection_Module) Has(fd protoreflect.FieldDescriptor) bool {
 		return x.MaxMetadataLen != uint64(0)
 	case "cosmos.gov.module.v1.Module.authority":
 		return x.Authority != ""
+	case "cosmos.gov.module.v1.Module.max_title_len":
+		return x.MaxTitleLen != uint64(0)
+	case "cosmos.gov.module.v1.Module.max_summary_len":
+		return x.MaxSummaryLen != uint64(0)
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.gov.module.v1.Module"))
@@ -142,6 +162,10 @@ func (x *fastReflection_Module) Clear(fd protoreflect.FieldDescriptor) {
 		x.MaxMetadataLen = uint64(0)
 	case "cosmos.gov.module.v1.Module.authority":
 		x.Authority = ""
+	case "cosmos.gov.module.v1.Module.max_title_len":
+		x.MaxTitleLen = uint64(0)
+	case "cosmos.gov.module.v1.Module.max_summary_len":
+		x.MaxSummaryLen = uint64(0)
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.gov.module.v1.Module"))
@@ -164,6 +188,12 @@ func (x *fastReflection_Module) Get(descriptor protoreflect.FieldDescriptor) pro
 	case "cosmos.gov.module.v1.Module.authority":
 		value := x.Authority
 		return protoreflect.ValueOfString(value)
+	case "cosmos.gov.module.v1.Module.max_title_len":
+		value := x.MaxTitleLen
+		return protoreflect.ValueOfUint64(value)
+	case "cosmos.gov.module.v1.Module.max_summary_len":
+		value := x.MaxSummaryLen
+		return protoreflect.ValueOfUint64(value)
 	default:
 		if descriptor.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.gov.module.v1.Module"))
@@ -188,6 +218,10 @@ func (x *fastReflection_Module) Set(fd protoreflect.FieldDescriptor, value proto
 		x.MaxMetadataLen = value.Uint()
 	case "cosmos.gov.module.v1.Module.authority":
 		x.Authority = value.Interface().(string)
+	case "cosmos.gov.module.v1.Module.max_title_len":
+		x.MaxTitleLen = value.Uint()
+	case "cosmos.gov.module.v1.Module.max_summary_len":
+		x.MaxSummaryLen = value.Uint()
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.gov.module.v1.Module"))
@@ -212,6 +246,10 @@ func (x *fastReflection_Module) Mutable(fd protoreflect.FieldDescriptor) protore
 		panic(fmt.Errorf("field max_metadata_len of message cosmos.gov.module.v1.Module is not mutable"))
 	case "cosmos.gov.module.v1.Module.authority":
 		panic(fmt.Errorf("field authority of message cosmos.gov.module.v1.Module is not mutable"))
+	case "cosmos.gov.module.v1.Module.max_title_len":
+		panic(fmt.Errorf("field max_title_len of message cosmos.gov.module.v1.Module is not mutable"))
+	case "cosmos.gov.module.v1.Module.max_summary_len":
+		panic(fmt.Errorf("field max_summary_len of message cosmos.gov.module.v1.Module is not mutable"))
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.gov.module.v1.Module"))
@@ -229,6 +267,10 @@ func (x *fastReflection_Module) NewField(fd protoreflect.FieldDescriptor) protor
 		return protoreflect.ValueOfUint64(uint64(0))
 	case "cosmos.gov.module.v1.Module.authority":
 		return protoreflect.ValueOfString("")
+	case "cosmos.gov.module.v1.Module.max_title_len":
+		return protoreflect.ValueOfUint64(uint64(0))
+	case "cosmos.gov.module.v1.Module.max_summary_len":
+		return protoreflect.ValueOfUint64(uint64(0))
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.gov.module.v1.Module"))
@@ -305,6 +347,12 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 		if l > 0 {
 			n += 1 + l + runtime.Sov(uint64(l))
 		}
+		if x.MaxTitleLen != 0 {
+			n += 1 + runtime.Sov(uint64(x.MaxTitleLen))
+		}
+		if x.MaxSummaryLen != 0 {
+			n += 1 + runtime.Sov(uint64(x.MaxSummaryLen))
+		}
 		if x.unknownFields != nil {
 			n += len(x.unknownFields)
 		}
@@ -334,6 +382,16 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 			i -= len(x.unknownFields)
 			copy(dAtA[i:], x.unknownFields)
 		}
+		if x.MaxSummaryLen != 0 {
+			i = runtime.EncodeVarint(dAtA, i, uint64(x.MaxSummaryLen))
+			i--
+			dAtA[i] = 0x20
+		}
+		if x.MaxTitleLen != 0 {
+			i = runtime.EncodeVarint(dAtA, i, uint64(x.MaxTitleLen))
+			i--
+			dAtA[i] = 0x18
+		}
 		if len(x.Authority) > 0 {
 			i -= len(x.Authority)
 			copy(dAtA[i:], x.Authority)
@@ -446,6 +504,44 @@ func (x *fastReflection_Module) ProtoMethods() *protoiface.Methods {
 				}
 				x.Authority = string(dAtA[iNdEx:postIndex])
 				iNdEx = postIndex
+			case 3:
+				if wireType != 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field MaxTitleLen", wireType)
+				}
+				x.MaxTitleLen = 0
+				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++
+					x.MaxTitleLen |= uint64(b&0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
+			case 4:
+				if wireType != 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field MaxSummaryLen", wireType)
+				}
+				x.MaxSummaryLen = 0
+				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++
+					x.MaxSummaryLen |= uint64(b&0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
 			default:
 				iNdEx = preIndex
 				skippy, err := runtime.Skip(dAtA[iNdEx:])
@@ -505,6 +601,12 @@ type Module struct {
 	MaxMetadataLen uint64 `protobuf:"varint,1,opt,name=max_metadata_len,json=maxMetadataLen,proto3" json:"max_metadata_len,omitempty"`
 	// authority defines the custom module authority. If not set, defaults to the governance module.
 	Authority string `protobuf:"bytes,2,opt,name=authority,proto3" json:"authority,omitempty"`
+	// max_title_len defines the maximum proposal title length.
+	// Defaults to 255 if not explicitly set.
+	MaxTitleLen uint64 `protobuf:"varint,3,opt,name=max_title_len,json=maxTitleLen,proto3" json:"max_title_len,omitempty"`
+	// max_summary_len defines the maximum proposal summary length.
+	// Defaults to 10200 if not explicitly set.
+	MaxSummaryLen uint64 `protobuf:"varint,4,opt,name=max_summary_len,json=maxSummaryLen,proto3" json:"max_summary_len,omitempty"`
 }
 
 func (x *Module) Reset() {
@@ -541,6 +643,20 @@ func (x *Module) GetAuthority() string {
 	return ""
 }
 
+func (x *Module) GetMaxTitleLen() uint64 {
+	if x != nil {
+		return x.MaxTitleLen
+	}
+	return 0
+}
+
+func (x *Module) GetMaxSummaryLen() uint64 {
+	if x != nil {
+		return x.MaxSummaryLen
+	}
+	return 0
+}
+
 var File_cosmos_gov_module_v1_module_proto protoreflect.FileDescriptor
 
 var file_cosmos_gov_module_v1_module_proto_rawDesc = []byte{
@@ -549,27 +665,32 @@ var file_cosmos_gov_module_v1_module_proto_rawDesc = []byte{
 	0x6f, 0x74, 0x6f, 0x12, 0x14, 0x63, 0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x2e, 0x67, 0x6f, 0x76, 0x2e,
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+	0x6f, 0x73, 0x3a, 0x3a, 0x47, 0x6f, 0x76, 0x3a, 0x3a, 0x4d, 0x6f, 0x64, 0x75, 0x6c, 0x65, 0x3a,
+	0x3a, 0x56, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/proto/cosmos/gov/module/v1/module.proto b/proto/cosmos/gov/module/v1/module.proto
index 510a04270386..a6803c67c4b9 100644
--- a/proto/cosmos/gov/module/v1/module.proto
+++ b/proto/cosmos/gov/module/v1/module.proto
@@ -16,4 +16,12 @@ message Module {
 
   // authority defines the custom module authority. If not set, defaults to the governance module.
   string authority = 2;
+
+  // max_title_len defines the maximum proposal title length.
+  // Defaults to 255 if not explicitly set.
+  uint64 max_title_len = 3;
+
+  // max_summary_len defines the maximum proposal summary length.
+  // Defaults to 10200 if not explicitly set.
+  uint64 max_summary_len = 4;
 }
diff --git a/x/gov/README.md b/x/gov/README.md
index 87b2fc5fad6c..d26637ef151c 100644
--- a/x/gov/README.md
+++ b/x/gov/README.md
@@ -308,8 +308,8 @@ the following `JSON` template:
 
 This makes it far easier for clients to support multiple networks.
 
-The metadata has a maximum length that is chosen by the app developer, and
-passed into the gov keeper as a config. The default maximum length in the SDK is 255 characters.
+Fields metadata, title and summary have a maximum length that is chosen by the app developer, and
+passed into the gov keeper as a config. The default maximum length are: for the title 255 characters, for the metadata 255 characters and for summary 10200 characters (40 times the one of the title).
 
 #### Writing a module that uses governance
 
diff --git a/x/gov/go.mod b/x/gov/go.mod
index 45f4d60d2f62..f42ab6817169 100644
--- a/x/gov/go.mod
+++ b/x/gov/go.mod
@@ -163,6 +163,7 @@ require (
 replace github.com/cosmos/cosmos-sdk => ../../.
 
 replace (
+	cosmossdk.io/api => ../../api
 	cosmossdk.io/x/auth => ../auth
 	cosmossdk.io/x/bank => ../bank
 	cosmossdk.io/x/distribution => ../distribution
diff --git a/x/gov/go.sum b/x/gov/go.sum
index 8bb89219d899..0e6ec8cf3208 100644
--- a/x/gov/go.sum
+++ b/x/gov/go.sum
@@ -35,8 +35,6 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
-cosmossdk.io/api v0.7.3-0.20231029200940-6af7f30bfd54 h1:c7kl5S1ME0q2g/7cdxngOAZr6N/5L7vVibmrmQZrQ0U=
-cosmossdk.io/api v0.7.3-0.20231029200940-6af7f30bfd54/go.mod h1:7B/5XWh1HYwJk3DzWeNoxOSI+nGx1m5UyYfHLFuKzkw=
 cosmossdk.io/collections v0.4.0 h1:PFmwj2W8szgpD5nOd8GWH6AbYNi1f2J6akWXJ7P5t9s=
 cosmossdk.io/collections v0.4.0/go.mod h1:oa5lUING2dP+gdDquow+QjlF45eL1t4TJDypgGd+tv0=
 cosmossdk.io/core v0.12.0 h1:aFuvkG6eDv0IQC+UDjx86wxNWVAxdCFk7OABJ1Vh4RU=
diff --git a/x/gov/keeper/keeper.go b/x/gov/keeper/keeper.go
index 55d2a03b428d..536187c694a1 100644
--- a/x/gov/keeper/keeper.go
+++ b/x/gov/keeper/keeper.go
@@ -91,9 +91,18 @@ func NewKeeper(
 		panic(fmt.Sprintf("invalid authority address: %s", authority))
 	}
 
+	defaultConfig := types.DefaultConfig()
+	// If MaxMetadataLen not set by app developer, set to default value.
+	if config.MaxTitleLen == 0 {
+		config.MaxTitleLen = defaultConfig.MaxTitleLen
+	}
 	// If MaxMetadataLen not set by app developer, set to default value.
 	if config.MaxMetadataLen == 0 {
-		config.MaxMetadataLen = types.DefaultConfig().MaxMetadataLen
+		config.MaxMetadataLen = defaultConfig.MaxMetadataLen
+	}
+	// If MaxMetadataLen not set by app developer, set to default value.
+	if config.MaxSummaryLen == 0 {
+		config.MaxSummaryLen = defaultConfig.MaxSummaryLen
 	}
 
 	sb := collections.NewSchemaBuilder(storeService)
@@ -181,6 +190,30 @@ func (k Keeper) ModuleAccountAddress() sdk.AccAddress {
 	return k.authKeeper.GetModuleAddress(types.ModuleName)
 }
 
+// validateProposalLengths checks message metadata, summary and title
+// to have the expected length otherwise returns an error.
+func (k Keeper) validateProposalLengths(metadata, title, summary string) error {
+    if err := k.assertMetadataLength(metadata); err != nil {
+        return err
+    }
+    if err := k.assertSummaryLength(summary); err != nil {
+        return err
+    }
+    if err := k.assertTitleLength(title); err != nil {
+        return err
+    }
+    return nil
+}
+
+// assertTitleLength returns an error if given title length
+// is greater than a pre-defined MaxTitleLen.
+func (k Keeper) assertTitleLength(title string) error {
+	if title != "" && uint64(len(title)) > k.config.MaxTitleLen {
+		return types.ErrTitleTooLong.Wrapf("got title with length %d", len(title))
+	}
+	return nil
+}
+
 // assertMetadataLength returns an error if given metadata length
 // is greater than a pre-defined MaxMetadataLen.
 func (k Keeper) assertMetadataLength(metadata string) error {
@@ -191,9 +224,9 @@ func (k Keeper) assertMetadataLength(metadata string) error {
 }
 
 // assertSummaryLength returns an error if given summary length
-// is greater than a pre-defined 40*MaxMetadataLen.
-func (keeper Keeper) assertSummaryLength(summary string) error {
-	if summary != "" && uint64(len(summary)) > 40*keeper.config.MaxMetadataLen {
+// is greater than a pre-defined MaxSummaryLen.
+func (k Keeper) assertSummaryLength(summary string) error {
+	if summary != "" && uint64(len(summary)) > k.config.MaxSummaryLen {
 		return types.ErrSummaryTooLong.Wrapf("got summary with length %d", len(summary))
 	}
 	return nil
diff --git a/x/gov/keeper/msg_server_test.go b/x/gov/keeper/msg_server_test.go
index 3eb34aa964e6..0c8be118bc42 100644
--- a/x/gov/keeper/msg_server_test.go
+++ b/x/gov/keeper/msg_server_test.go
@@ -48,7 +48,7 @@ func (suite *KeeperTestSuite) TestMsgSubmitProposal() {
 					[]sdk.Msg{bankMsg},
 					initialDeposit,
 					"",
-					strings.Repeat("1", 300),
+					strings.Repeat("1", 100),
 					"Proposal",
 					"description of proposal",
 					false,
@@ -132,13 +132,28 @@ func (suite *KeeperTestSuite) TestMsgSubmitProposal() {
 			expErr:    true,
 			expErrMsg: "metadata summary '' must equal proposal summary 'description'",
 		},
+		"title too long": {
+			preRun: func() (*v1.MsgSubmitProposal, error) {
+				return v1.NewMsgSubmitProposal(
+					[]sdk.Msg{bankMsg},
+					initialDeposit,
+					proposer.String(),
+					"Metadata",
+					strings.Repeat("1", 256),
+					"description of proposal",
+					false,
+				)
+			},
+			expErr:    true,
+			expErrMsg: "title too long",
+		},
 		"metadata too long": {
 			preRun: func() (*v1.MsgSubmitProposal, error) {
 				return v1.NewMsgSubmitProposal(
 					[]sdk.Msg{bankMsg},
 					initialDeposit,
 					proposer.String(),
-					strings.Repeat("1", 300),
+					strings.Repeat("1", 256),
 					"Proposal",
 					"description of proposal",
 					false,
@@ -155,7 +170,7 @@ func (suite *KeeperTestSuite) TestMsgSubmitProposal() {
 					proposer.String(),
 					"",
 					"Proposal",
-					strings.Repeat("1", 300*40),
+					strings.Repeat("1", 10201),
 					false,
 				)
 			},
diff --git a/x/gov/keeper/proposal.go b/x/gov/keeper/proposal.go
index c4b18557b6d1..0d2cfdac8786 100644
--- a/x/gov/keeper/proposal.go
+++ b/x/gov/keeper/proposal.go
@@ -19,21 +19,12 @@ import (
 // SubmitProposal creates a new proposal given an array of messages
 func (keeper Keeper) SubmitProposal(ctx context.Context, messages []sdk.Msg, metadata, title, summary string, proposer sdk.AccAddress, expedited bool) (v1.Proposal, error) {
 	sdkCtx := sdk.UnwrapSDKContext(ctx)
-	err := keeper.assertMetadataLength(metadata)
-	if err != nil {
-		return v1.Proposal{}, err
-	}
+	
 
-	// assert summary is no longer than predefined max length of metadata
-	err = keeper.assertSummaryLength(summary)
-	if err != nil {
-		return v1.Proposal{}, err
-	}
-
-	// assert title is no longer than predefined max length of metadata
-	err = keeper.assertMetadataLength(title)
-	if err != nil {
-		return v1.Proposal{}, err
+// This method checks that all message metadata, summary and title
+// has te expected length defined in the module configuration.
+	if err := keeper.validateProposalLengths(metadata, title, summary); err != nil {
+	     return v1.Proposal{}, err
 	}
 
 	// Will hold a string slice of all Msg type URLs.
diff --git a/x/gov/module.go b/x/gov/module.go
index 787c9494266a..63f870b22d3c 100644
--- a/x/gov/module.go
+++ b/x/gov/module.go
@@ -182,9 +182,15 @@ type ModuleOutputs struct {
 
 func ProvideModule(in ModuleInputs) ModuleOutputs {
 	defaultConfig := govtypes.DefaultConfig()
+	if in.Config.MaxTitleLen != 0 {
+		defaultConfig.MaxTitleLen = in.Config.MaxTitleLen
+	}
 	if in.Config.MaxMetadataLen != 0 {
 		defaultConfig.MaxMetadataLen = in.Config.MaxMetadataLen
 	}
+	if in.Config.MaxSummaryLen != 0 {
+		defaultConfig.MaxSummaryLen = in.Config.MaxSummaryLen
+	}
 
 	// default to governance authority if not provided
 	authority := authtypes.NewModuleAddress(govtypes.ModuleName)
diff --git a/x/gov/types/config.go b/x/gov/types/config.go
index d19767f7d15c..39a809688c64 100644
--- a/x/gov/types/config.go
+++ b/x/gov/types/config.go
@@ -2,13 +2,19 @@ package types
 
 // Config is a config struct used for intialising the gov module to avoid using globals.
 type Config struct {
-	// MaxMetadataLen defines the maximum proposal metadata length.
+	// MaxTitleLen defines the amount of characters that can be used for proposal title
+	MaxTitleLen uint64
+	// MaxMetadataLen defines the amount of characters that can be used for proposal metadata.
 	MaxMetadataLen uint64
+	// MaxSummaryLen defines the amount of characters that can be used for proposal summary
+	MaxSummaryLen uint64
 }
 
 // DefaultConfig returns the default config for gov.
 func DefaultConfig() Config {
 	return Config{
+		MaxTitleLen:    255,
 		MaxMetadataLen: 255,
+		MaxSummaryLen:  10200,
 	}
 }
diff --git a/x/gov/types/errors.go b/x/gov/types/errors.go
index 4ee8a17257bc..afbbbc2b70be 100644
--- a/x/gov/types/errors.go
+++ b/x/gov/types/errors.go
@@ -25,4 +25,5 @@ var (
 	ErrInvalidProposal         = errors.Register(ModuleName, 21, "invalid proposal")
 	ErrSummaryTooLong          = errors.Register(ModuleName, 22, "summary too long")
 	ErrInvalidDepositDenom     = errors.Register(ModuleName, 23, "invalid deposit denom")
+	ErrTitleTooLong            = errors.Register(ModuleName, 24, "title too long")
 )