feat: Add HasSupply method to bank keeper (backport #10393) (#10699)

* feat: Add `HasSupply` method to bank keeper (#10393)

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## Description
Add `HasSupply` method to ensure that input denom actually exists on chain.

Closes: #10387

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- [ ] added `!` to the type prefix if API or client breaking change
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- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
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- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
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(cherry picked from commit 8b78406)

# Conflicts:
#	CHANGELOG.md

* Fix conflicts

Co-authored-by: likhita-809 <78951027+likhita-809@users.noreply.github.com>
Co-authored-by: Amaury M <1293565+amaurym@users.noreply.github.com>

CHANGELOG.md

@@ -48,6 +48,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ### Improvements
 
 * (baseapp) [\#10631](https://github.com/cosmos/cosmos-sdk/pull/10631)  Emit ante events even for the failed txs. 
+* [\#10393](https://github.com/cosmos/cosmos-sdk/pull/10393) Add `HasSupply` method to bank keeper to ensure that input denom actually exists on chain.
 
 ### Features
 

x/bank/keeper/keeper.go

@@ -25,6 +25,7 @@ type Keeper interface {
 	ExportGenesis(sdk.Context) *types.GenesisState
 
 	GetSupply(ctx sdk.Context, denom string) sdk.Coin
+	HasSupply(ctx sdk.Context, denom string) bool
 	GetPaginatedTotalSupply(ctx sdk.Context, pagination *query.PageRequest) (sdk.Coins, *query.PageResponse, error)
 	IterateTotalSupply(ctx sdk.Context, cb func(sdk.Coin) bool)
 	GetDenomMetaData(ctx sdk.Context, denom string) (types.Metadata, bool)
@@ -214,6 +215,13 @@ func (k BaseKeeper) GetSupply(ctx sdk.Context, denom string) sdk.Coin {
 	}
 }
 
+// HasSupply checks if the supply coin exists in store.
+func (k BaseKeeper) HasSupply(ctx sdk.Context, denom string) bool {
+	store := ctx.KVStore(k.storeKey)
+	supplyStore := prefix.NewStore(store, types.SupplyKey)
+	return supplyStore.Has([]byte(denom))
+}
+
 // GetDenomMetaData retrieves the denomination metadata. returns the metadata and true if the denom exists,
 // false otherwise.
 func (k BaseKeeper) GetDenomMetaData(ctx sdk.Context, denom string) (types.Metadata, bool) {

x/bank/keeper/keeper_test.go

@@ -1113,6 +1113,7 @@ func (suite *IntegrationTestSuite) TestBalanceTrackingEvents() {
 	}
 
 	// check balance and supply tracking
+	suite.Require().True(suite.app.BankKeeper.HasSupply(suite.ctx, "utxo"))
 	savedSupply := suite.app.BankKeeper.GetSupply(suite.ctx, "utxo")
 	utxoSupply := savedSupply
 	suite.Require().Equal(utxoSupply.Amount, supply.AmountOf("utxo"))