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feat: add tx fee event #9860

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merged 9 commits into from
Aug 9, 2021
Merged

feat: add tx fee event #9860

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1cdf9ab
add tx fee event
colin-axner Aug 5, 2021
be0ac49
add cli test
colin-axner Aug 6, 2021
f72d97f
add changelog
colin-axner Aug 6, 2021
c103d79
update tests
colin-axner Aug 6, 2021
798a163
Merge branch 'master' into colin/9857-fee-event
colin-axner Aug 6, 2021
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apply review suggestions
colin-axner Aug 9, 2021
c47a49f
Merge branch 'colin/9857-fee-event' of github.com:cosmos/cosmos-sdk i…
colin-axner Aug 9, 2021
cc782cb
Merge branch 'master' into colin/9857-fee-event
colin-axner Aug 9, 2021
4ba3df2
Merge branch 'master' into colin/9857-fee-event
colin-axner Aug 9, 2021
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1 change: 1 addition & 0 deletions types/events.go
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Expand Up @@ -227,6 +227,7 @@ var (

AttributeKeyAccountSequence = "acc_seq"
AttributeKeySignature = "signature"
AttributeKeyFee = "fee"

EventTypeMessage = "message"

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6 changes: 6 additions & 0 deletions x/auth/ante/fee.go
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Expand Up @@ -117,6 +117,12 @@ func (dfd DeductFeeDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bo
}
}

var events sdk.Events
events = append(events, sdk.NewEvent(sdk.EventTypeTx,
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sdk.NewAttribute(sdk.AttributeKeyFee, feeTx.GetFee().String()),
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Thanks for the PR Colin!

This is the total fee payed by the tx, represented as a coin/denom?
I'm trying to test this with Hermes and will provide feedback on how easy is it for the relayer to use the fee info.

As a side-note, I'm trying to rebuild my local gaiad using this branch, and was wondering if there any instructions for doing that. I'm patching my gaia go.mod but not sure that's the right approach.

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@colin-axner colin-axner Aug 5, 2021 •
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Yes this is the total fee, but the fee may be multiple coins. Each coin would be represented by denom/amount. An empty coin set returns an empty string

Using the SDK's simd binary is another alternative to gaiad. You can run make build or make install depending on your usage

Edit: I realize SDK's simd doesn't have IBC

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Yes, this is the entire fee. In the case of the Hub, it would be Nuatom, but could be multiple coins as @colin-axner pointed out, e.g. Nuatom,Yphoton

))
ctx.EventManager().EmitEvents(events)

return next(ctx, tx, simulate)
}

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