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Save gas on IsFeeEnabled (backport #2786) #2816

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Nov 23, 2022
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2 changes: 2 additions & 0 deletions CHANGELOG.md
Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,8 @@ Ref: https://keepachangelog.com/en/1.0.0/

### Improvements

* (apps/29-fee) [\#2786](https://github.com/cosmos/ibc-go/pull/2786) Save gas by checking key existence with `KVStore`'s `Has` method.

### Features

### Bug Fixes
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2 changes: 1 addition & 1 deletion modules/apps/29-fee/keeper/keeper.go
Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,7 @@ 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
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