Save gas on IsFeeEnabled (#2786)

* Save gas on IsFeeEnabled * add entry for #2786 Co-authored-by: Carlos Rodriguez <[email protected]>
cosmos · Nov 22, 2022 · bbac2b1 · bbac2b1
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -110,6 +110,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * [\#2434](https://github.com/cosmos/ibc-go/pull/2478) Removed all `TypeMsg` constants
 * (modules/core/exported) [#1689] (https://github.com/cosmos/ibc-go/pull/2539) Removing `GetVersions` from `ConnectionI` interface.
 * (core/03-connection) [\#2745](https://github.com/cosmos/ibc-go/pull/2745) Adding `ConnectionParams` grpc query and CLI to 03-connection.
+* (apps/29-fee) [\#2786](https://github.com/cosmos/ibc-go/pull/2786) Save gas by checking key existence with `KVStore`'s `Has` method.
 
 ### Features
 

diff --git a/modules/apps/29-fee/keeper/keeper.go b/modules/apps/29-fee/keeper/keeper.go
@@ -123,7 +123,7 @@ func (k Keeper) DeleteFeeEnabled(ctx sdk.Context, portID, channelID string) {
 // fee enabled flag for the given port and channel identifiers
 func (k Keeper) IsFeeEnabled(ctx sdk.Context, portID, channelID string) bool {
 	store := ctx.KVStore(k.storeKey)
-	return store.Get(types.KeyFeeEnabled(portID, channelID)) != nil
+	return store.Has(types.KeyFeeEnabled(portID, channelID))
 }
 
 // GetAllFeeEnabledChannels returns a list of all ics29 enabled channels containing portID & channelID that are stored in state