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Light client friendly events (#2491)
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* Sketch of indexed events.

* Get EventIndex by holding another variable.

* Add some docs.

* Use DoubleMap to store reverse topic index

* Implement StorageDoubleMap::append

* Use append for EventTopics.

* Refactor.

* Avoid `mutate`

* Docs.

* Add topics to EventRecord

* Update tests.

* Rebuild.

* Bump version.

* Event topics test.

* Mix in BlockNumber to distinguish updates

* Fix srml-system test.

* Post merge fixes.

* Comments/TODO.
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@pepyakin @gavofyork
pepyakin authored and gavofyork committed May 13, 2019
1 parent a0931f3 commit 318d2e0
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Showing 8 changed files with 325 additions and 56 deletions.
45 changes: 30 additions & 15 deletions node/executor/src/lib.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -490,7 +490,8 @@ mod tests {
assert_eq!(System::events(), vec![
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: Event::system(system::Event::ExtrinsicSuccess)
event: Event::system(system::Event::ExtrinsicSuccess),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(1),
Expand All @@ -499,23 +500,28 @@ mod tests {
bob().into(),
69,
0
))
)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(1),
event: Event::system(system::Event::ExtrinsicSuccess)
event: Event::system(system::Event::ExtrinsicSuccess),
topics: vec![],
},
EventRecord {
phase: Phase::Finalization,
event: Event::treasury(treasury::RawEvent::Spending(0))
event: Event::treasury(treasury::RawEvent::Spending(0)),
topics: vec![],
},
EventRecord {
phase: Phase::Finalization,
event: Event::treasury(treasury::RawEvent::Burnt(0))
event: Event::treasury(treasury::RawEvent::Burnt(0)),
topics: vec![],
},
EventRecord {
phase: Phase::Finalization,
event: Event::treasury(treasury::RawEvent::Rollover(0))
event: Event::treasury(treasury::RawEvent::Rollover(0)),
topics: vec![],
},
]);
});
Expand All @@ -537,7 +543,8 @@ mod tests {
assert_eq!(System::events(), vec![
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: Event::system(system::Event::ExtrinsicSuccess)
event: Event::system(system::Event::ExtrinsicSuccess),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(1),
Expand All @@ -548,11 +555,13 @@ mod tests {
5,
0
)
)
),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(1),
event: Event::system(system::Event::ExtrinsicSuccess)
event: Event::system(system::Event::ExtrinsicSuccess),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(2),
Expand All @@ -563,27 +572,33 @@ mod tests {
15,
0
)
)
),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(2),
event: Event::system(system::Event::ExtrinsicSuccess)
event: Event::system(system::Event::ExtrinsicSuccess),
topics: vec![],
},
EventRecord {
phase: Phase::Finalization,
event: Event::treasury(treasury::RawEvent::Spending(0))
event: Event::treasury(treasury::RawEvent::Spending(0)),
topics: vec![],
},
EventRecord {
phase: Phase::Finalization,
event: Event::treasury(treasury::RawEvent::Burnt(0))
event: Event::treasury(treasury::RawEvent::Burnt(0)),
topics: vec![],
},
EventRecord {
phase: Phase::Finalization,
event: Event::treasury(treasury::RawEvent::Rollover(0))
event: Event::treasury(treasury::RawEvent::Rollover(0)),
topics: vec![],
},
EventRecord {
phase: Phase::Finalization,
event: Event::session(session::RawEvent::NewSession(1))
event: Event::session(session::RawEvent::NewSession(1)),
topics: vec![],
},
]);
});
Expand Down
38 changes: 28 additions & 10 deletions srml/contract/src/tests.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -363,28 +363,34 @@ fn instantiate_and_call_and_deposit_event() {
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::CodeStored(HASH_RETURN_FROM_START_FN.into())),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::balances(
balances::RawEvent::NewAccount(BOB, 100)
)
),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::Transfer(ALICE, BOB, 100))
event: MetaEvent::contract(RawEvent::Transfer(ALICE, BOB, 100)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::Contract(BOB, vec![1, 2, 3, 4]))
event: MetaEvent::contract(RawEvent::Contract(BOB, vec![1, 2, 3, 4])),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::Instantiated(ALICE, BOB))
event: MetaEvent::contract(RawEvent::Instantiated(ALICE, BOB)),
topics: vec![],
}
]);

Expand Down Expand Up @@ -434,10 +440,12 @@ fn dispatch_call() {
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::CodeStored(HASH_DISPATCH_CALL.into())),
topics: vec![],
},
]);

Expand All @@ -461,44 +469,52 @@ fn dispatch_call() {
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::CodeStored(HASH_DISPATCH_CALL.into())),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::balances(
balances::RawEvent::NewAccount(BOB, 100)
)
),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::Transfer(ALICE, BOB, 100))
event: MetaEvent::contract(RawEvent::Transfer(ALICE, BOB, 100)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::Instantiated(ALICE, BOB))
event: MetaEvent::contract(RawEvent::Instantiated(ALICE, BOB)),
topics: vec![],
},

// Dispatching the call.
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::balances(
balances::RawEvent::NewAccount(CHARLIE, 50)
)
),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::balances(
balances::RawEvent::Transfer(BOB, CHARLIE, 50, 0)
)
),
topics: vec![],
},

// Event emited as a result of dispatch.
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::Dispatched(BOB, true))
event: MetaEvent::contract(RawEvent::Dispatched(BOB, true)),
topics: vec![],
}
]);
},
Expand Down Expand Up @@ -644,10 +660,12 @@ fn set_rent_hash_and_code() {
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::balances(balances::RawEvent::NewAccount(1, 1_000_000)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: MetaEvent::contract(RawEvent::CodeStored(HASH_SET_RENT.into())),
topics: vec![],
},
]);
}
Expand Down
30 changes: 20 additions & 10 deletions srml/council/src/motions.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -234,7 +234,8 @@ mod tests {
assert_eq!(System::events(), vec![
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Proposed(1, 0, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), 3))
event: OuterEvent::motions(RawEvent::Proposed(1, 0, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), 3)),
topics: vec![],
}
]);
});
Expand Down Expand Up @@ -287,11 +288,13 @@ mod tests {
assert_eq!(System::events(), vec![
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Proposed(1, 0, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), 2))
event: OuterEvent::motions(RawEvent::Proposed(1, 0, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), 2)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Voted(1, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), false, 0, 1))
event: OuterEvent::motions(RawEvent::Voted(1, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), false, 0, 1)),
topics: vec![],
}
]);
});
Expand All @@ -309,15 +312,18 @@ mod tests {
assert_eq!(System::events(), vec![
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Proposed(1, 0, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), 3))
event: OuterEvent::motions(RawEvent::Proposed(1, 0, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), 3)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Voted(2, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), false, 1, 1))
event: OuterEvent::motions(RawEvent::Voted(2, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), false, 1, 1)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Disapproved(hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into()))
event: OuterEvent::motions(RawEvent::Disapproved(hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into())),
topics: vec![],
}
]);
});
Expand All @@ -335,19 +341,23 @@ mod tests {
assert_eq!(System::events(), vec![
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Proposed(1, 0, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), 2))
event: OuterEvent::motions(RawEvent::Proposed(1, 0, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), 2)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Voted(2, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), true, 2, 0))
event: OuterEvent::motions(RawEvent::Voted(2, hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), true, 2, 0)),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Approved(hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into()))
event: OuterEvent::motions(RawEvent::Approved(hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into())),
topics: vec![],
},
EventRecord {
phase: Phase::ApplyExtrinsic(0),
event: OuterEvent::motions(RawEvent::Executed(hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), false))
event: OuterEvent::motions(RawEvent::Executed(hex!["cd0b662a49f004093b80600415cf4126399af0d27ed6c185abeb1469c17eb5bf"].into(), false)),
topics: vec![],
}
]);
});
Expand Down
2 changes: 2 additions & 0 deletions srml/grandpa/src/tests.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@ fn authorities_change_logged() {
EventRecord {
phase: Phase::Finalization,
event: RawEvent::NewAuthorities(vec![(4, 1), (5, 1), (6, 1)]).into(),
topics: vec![],
},
]);
});
Expand Down Expand Up @@ -77,6 +78,7 @@ fn authorities_change_logged_after_delay() {
EventRecord {
phase: Phase::Finalization,
event: RawEvent::NewAuthorities(vec![(4, 1), (5, 1), (6, 1)]).into(),
topics: vec![],
},
]);
});
Expand Down
31 changes: 31 additions & 0 deletions srml/support/src/lib.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -238,6 +238,7 @@ mod tests {
pub DataDM config(test_config) build(|_| vec![(15u32, 16u32, 42u64)]): double_map hasher(twox_64_concat) u32, blake2_256(u32) => u64;
pub GenericDataDM: double_map T::BlockNumber, twox_128(T::BlockNumber) => T::BlockNumber;
pub GenericData2DM: double_map T::BlockNumber, twox_256(T::BlockNumber) => Option<T::BlockNumber>;
pub AppendableDM: double_map u32, blake2_256(T::BlockNumber) => Vec<u32>;
}
}

Expand Down Expand Up @@ -367,6 +368,21 @@ mod tests {
assert_eq!(DoubleMap::get(key1, key2+1), 0u64);
assert_eq!(DoubleMap::get(key1+1, key2), 4u64);
assert_eq!(DoubleMap::get(key1+1, key2+1), 4u64);

});
}

#[test]
fn double_map_append_should_work() {
with_externalities(&mut new_test_ext(), || {
type DoubleMap = AppendableDM<Test>;

let key1 = 17u32;
let key2 = 18u32;

DoubleMap::insert(key1, key2, vec![1]);
DoubleMap::append(key1, key2, &[2, 3]);
assert_eq!(DoubleMap::get(key1, key2), vec![1, 2, 3]);
});
}

Expand Down Expand Up @@ -453,6 +469,21 @@ mod tests {
),
documentation: DecodeDifferent::Encode(&[]),
},
StorageFunctionMetadata {
name: DecodeDifferent::Encode("AppendableDM"),
modifier: StorageFunctionModifier::Default,
ty: StorageFunctionType::DoubleMap{
hasher: StorageHasher::Blake2_256,
key1: DecodeDifferent::Encode("u32"),
key2: DecodeDifferent::Encode("T::BlockNumber"),
value: DecodeDifferent::Encode("Vec<u32>"),
key2_hasher: DecodeDifferent::Encode("blake2_256"),
},
default: DecodeDifferent::Encode(
DefaultByteGetter(&__GetByteStructGenericData2DM(PhantomData::<Test>))
),
documentation: DecodeDifferent::Encode(&[]),
},
])
};

Expand Down
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