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Offences Weight for OnInitialize (#5961)

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* Weight accounting for on_offence.

* Try to compute weight.

* Guesstimate upper bounds on db read/writes for slashing

* greater than or equal to

* add new trait

* Update mock.rs

* Add basic weight test

* one more test

* Update frame/staking/src/lib.rs

Co-authored-by: thiolliere <gui.thiolliere@gmail.com>

* Update frame/staking/src/lib.rs

Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>

* Add test for offences queue

Co-authored-by: Tomasz Drwięga <tomasz@parity.io>
Co-authored-by: thiolliere <gui.thiolliere@gmail.com>
Co-authored-by: Kian Paimani <5588131+kianenigma@users.noreply.github.com>
This commit is contained in:
Shawn Tabrizi
2020-05-21 14:00:24 +02:00
committed by GitHub
parent 0ddd5cc278
commit ac049a97be
9 changed files with 219 additions and 38 deletions
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substrate/frame/staking/src/tests.rs
+43
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@@ -4667,6 +4667,49 @@ fn migrate_era_should_handle_errors_2() {
});
}
#[test]
fn offences_weight_calculated_correctly() {
ExtBuilder::default().nominate(true).build_and_execute(|| {
// On offence with zero offenders: 4 Reads, 1 Write
let zero_offence_weight = <Test as frame_system::Trait>::DbWeight::get().reads_writes(4, 1);
assert_eq!(Staking::on_offence(&[], &[Perbill::from_percent(50)], 0), Ok(zero_offence_weight));
// On Offence with N offenders, Unapplied: 4 Reads, 1 Write + 4 Reads, 5 Writes
let n_offence_unapplied_weight = <Test as frame_system::Trait>::DbWeight::get().reads_writes(4, 1)
+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(4, 5);
let offenders: Vec<OffenceDetails<<Test as frame_system::Trait>::AccountId, pallet_session::historical::IdentificationTuple<Test>>>
= (1..10).map(|i|
OffenceDetails {
offender: (i, Staking::eras_stakers(Staking::active_era().unwrap().index, i)),
reporters: vec![],
}
).collect();
assert_eq!(Staking::on_offence(&offenders, &[Perbill::from_percent(50)], 0), Ok(n_offence_unapplied_weight));
// On Offence with one offenders, Applied
let one_offender = [
OffenceDetails {
offender: (11, Staking::eras_stakers(Staking::active_era().unwrap().index, 11)),
reporters: vec![1],
},
];
let n = 1; // Number of offenders
let rw = 3 + 3 * n; // rw reads and writes
let one_offence_unapplied_weight = <Test as frame_system::Trait>::DbWeight::get().reads_writes(4, 1)
+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(rw, rw)
// One `slash_cost`
+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(6, 5)
// `slash_cost` * nominators (1)
+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(6, 5)
// `reward_cost` * reporters (1)
+ <Test as frame_system::Trait>::DbWeight::get().reads_writes(2, 2);
assert_eq!(Staking::on_offence(&one_offender, &[Perbill::from_percent(50)], 0), Ok(one_offence_unapplied_weight));
});
}
#[test]
fn on_initialize_weight_is_correct() {
ExtBuilder::default().has_stakers(false).build_and_execute(|| {