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safe multi-era slashing for NPoS (#3846)

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* define slashing spans

* tests and pruning for slashing-spans record

* validators get slashed before nominators

* apply slash to nominators as well

* chill and end slashing spans

* actually perform slashes

* integration (tests failing)

* prune metadata

* fix compilation

* some tests for slashing and metadata garbage collection

* correctly pass session index to slash handler

* test span-max property for nominators and validators

* test that slashes are summed correctly

* reward value computation

* implement rewarding

* add comment about rewards

* do not adjust slash fraction in offences module

* fix offences tests

* remove unused new_offenders field

* update runtime version

* fix up some docs

* fix some CI failures

* remove no-std incompatible vec! invocation

* try to fix span-max rounding error

* Update srml/staking/src/slashing.rs

Fix type: winow -> window

Co-Authored-By: Tomasz Drwięga <tomusdrw@users.noreply.github.com>

* slashes from prior spans don't kick validator again

* more information for nominators, suppression

* ensure ledger is consistent with itself post-slash

* implement slash out of unlocking funds also

* slashing: create records to be applied after-the-fact

* queue slashes for a few eras later

* method for canceling deferred slashes

* attempt to fix test in CI

* storage migration for `Nominators`

* update node-runtime to use SlashDeferDuration

* adjust migration entry-points somewhat

* fix migration compilation

* add manual Vec import to migration

* enable migrations feature in node-runtime

* bump runtime version

* update to latest master crate renames

* update to use ensure-origin

* Apply suggestions from code review

use `ensure!`

Co-Authored-By: Gavin Wood <gavin@parity.io>

* fix multi-slash removal

* initialize storage version to current in genesis

* add test for version initialization
This commit is contained in:
Robert Habermeier
2019-11-27 20:06:32 +01:00
committed by Gavin Wood
parent de5686509c
commit 4598e13015
13 changed files with 1921 additions and 249 deletions
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substrate/frame/offences/src/tests.rs
+1 -32
View File
@@ -23,6 +23,7 @@ use crate::mock::{
Offences, System, Offence, TestEvent, KIND, new_test_ext, with_on_offence_fractions,
offence_reports,
};
use sr_primitives::Perbill;
use system::{EventRecord, Phase};
#[test]
@@ -48,38 +49,6 @@ fn should_report_an_authority_and_trigger_on_offence() {
});
}
#[test]
fn should_calculate_the_fraction_correctly() {
new_test_ext().execute_with(|| {
// given
let time_slot = 42;
assert_eq!(offence_reports(KIND, time_slot), vec![]);
let offence1 = Offence {
validator_set_count: 5,
time_slot,
offenders: vec![5],
};
let offence2 = Offence {
validator_set_count: 5,
time_slot,
offenders: vec![4],
};
// when
Offences::report_offence(vec![], offence1);
with_on_offence_fractions(|f| {
assert_eq!(f.clone(), vec![Perbill::from_percent(25)]);
});
Offences::report_offence(vec![], offence2);
// then
with_on_offence_fractions(|f| {
assert_eq!(f.clone(), vec![Perbill::from_percent(15), Perbill::from_percent(45)]);
});
});
}
#[test]
fn should_not_report_the_same_authority_twice_in_the_same_slot() {
new_test_ext().execute_with(|| {