Cosmos Dev Series: Cosmos-SDK-based Blockchain Upgrade - v2 upgrade ex

upgrade.go

package v2 // upgrades.go

var DenomMetadata = banktypes.Metadata{...}

func CreateUpgradeHandler(
    mm *module.Manager,
    configurator module.Configurator,
    bk bankkeeper.Keeper,
) upgradetypes.UpgradeHandler {
    return func(ctx sdk.Context, plan upgradetypes.Plan, vm module.VersionMap) (module.VersionMap, error) {
    
        UpdateDenomMetadata(ctx, bk)
        
        return mm.RunMigrations(ctx, configurator, vm)
    }
}

func UpdateDenomMetadata(ctx sdk.Context, bk bankkeeper.Keeper) {
    bk.SetDenomMetaData(ctx, DenomMetadata)
}