feat(x/gov): extend governance config

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.

x/gov/keeper/keeper.go

@@ -181,19 +181,28 @@ func (k Keeper) ModuleAccountAddress() sdk.AccAddress {
 	return k.authKeeper.GetModuleAddress(types.ModuleName)
 }
 
+// assertTitleLength returns an error if given title length
+// is greater than a pre-defined MaxTitleLen.
+func (k Keeper) assertTitleLength(title string) error {
+	if title != "" && len(title) > k.config.MaxTitleLen {
+		return types.ErrMetadataTooLong.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 {
-	if metadata != "" && uint64(len(metadata)) > k.config.MaxMetadataLen {
+	if metadata != "" && len(metadata) > k.config.MaxMetadataLen {
 		return types.ErrMetadataTooLong.Wrapf("got metadata with length %d", len(metadata))
 	}
 	return nil
 }
 
 // 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 != "" && len(summary) > k.config.MaxSummaryLen {
 		return types.ErrSummaryTooLong.Wrapf("got summary with length %d", len(summary))
 	}
 	return nil

x/gov/keeper/proposal.go

@@ -19,19 +19,23 @@ 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)
+	// check that the proposal has
+	// the expected metadata length
 	err := keeper.assertMetadataLength(metadata)
 	if err != nil {
 		return v1.Proposal{}, err
 	}
 
-	// assert summary is no longer than predefined max length of metadata
+	// check that the proposal has
+	// the expected summary length
 	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)
+	// check that the proposal has
+	// the expected title length
+	err = keeper.assertTitleLength(title)
 	if err != nil {
 		return v1.Proposal{}, err
 	}

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.
-	MaxMetadataLen uint64
+	// MaxTitleLen defines the amount of characters that can be used for proposal title
+	MaxTitleLen int
+	// MaxMetadataLen defines the amount of characters that can be used for proposal metadata.
+	MaxMetadataLen int
+	// MaxSummaryLen defines the amount of characters that can be used for proposal summary
+	MaxSummaryLen int
 }
 
 // DefaultConfig returns the default config for gov.
 func DefaultConfig() Config {
 	return Config{
+		MaxTitleLen:    100,
 		MaxMetadataLen: 255,
+		MaxSummaryLen:  10200,
 	}
 }