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gasstation: scale fee history reward percentiles to 0-100 #5032

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Merged
envestcc merged 2 commits into from
Oct 10, 2026
Merged

gasstation: scale fee history reward percentiles to 0-100 #5032

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beeeeed
gasstation: scale fee history reward percentiles to 0-100
guo Oct 2, 2026
362fa94
Merge branch 'master' into guo/fee-history-percentiles
envestcc Oct 9, 2026
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9 changes: 8 additions & 1 deletion gasstation/gasstattion.go
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Original file line number Diff line number Diff line change
Expand Up @@ -236,8 +236,15 @@ func (gs *GasStation) FeeHistory(ctx context.Context, blocks, lastBlock uint64,

func feesPercentiles(ascFees []*big.Int, percentiles []float64) []*big.Int {
res := make([]*big.Int, len(percentiles))
if len(ascFees) == 0 {
for i := range res {
res[i] = big.NewInt(0)
}
return res
}
for i, p := range percentiles {
idx := int(float64(len(ascFees)) * p)
// percentiles are given in [0, 100]
idx := int(float64(len(ascFees)) * p / 100)
if idx >= len(ascFees) {
idx = len(ascFees) - 1
}
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13 changes: 13 additions & 0 deletions gasstation/gasstattion_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -283,3 +283,16 @@ func prepareBlocks(r *require.Assertions, cases []testActionGas) map[uint64]*blo
}
return blocks
}

func TestFeesPercentiles(t *testing.T) {
r := require.New(t)
fees := make([]*big.Int, 10)
for i := range fees {
fees[i] = big.NewInt(int64(i + 1))
}
got := feesPercentiles(fees, []float64{0, 25, 50, 75, 100})
r.Equal([]*big.Int{big.NewInt(1), big.NewInt(3), big.NewInt(6), big.NewInt(8), big.NewInt(10)}, got)

got = feesPercentiles(nil, []float64{10, 90})
r.Equal([]*big.Int{big.NewInt(0), big.NewInt(0)}, got)
}
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