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Squashed 'bridges/' changes from 23dda62482..407bf44a8a

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407bf44a8a add missing license header (#1204)
9babb19810  Custom relay strategy (#1198)
c287872a11 fix clippy things (#1200)
3a40e62789 Expose some const value and type (#1186)
32b61476d1 increase sleep before connectingMillau (#1195)
aabe7041fa revert messages transactions mortality (#1194)
3651f4f909 Message transactions mortality (#1191)
364d6e155d Bump dependencies (#1180)
f0389acc08 cargo +nightly fmt --all (#1192)
b270b6a016 Unify error enums in substrate and ethereum clients with `thiserror` (#1094)
58c4946f74 Limit max call size of Rialto/Millau runtimes (#1187)
fd56a8cd56 Add UI to the deployment (#1047)
16f01dc736 Westend -> Millau alerts are pending before notifications are sent (#1184)
5628c11ece replace collective flip with babe randomness in Rialto (#1188)
1094a63b00 ignore another (pretty bad) RUSTSEC (#1185)
379fe323ea fix/ignore cargo deny issues (#1183)
92af5e6e64 additional log in finality relay + rephrase "failed" (#1182)
b996a3b681 Rialto parachain in test deployments (#1178)
28d9332b44 Resubmit transactions strategy for Polkadot/Kusama (#1175)
d0172c6847 Playing with CI (#1179)
fb6f42456d fix checks order when registering parachain (#1177)
ee828c005a Register-parachain subcommand of substrate-relay (#1170)
8cd2b1a112 Token swap pallet benchmarks (#1174)
bb811accb1 fix collision with westend bridge (#1172)
8d2fba70ed add token swaps to test deployments (#1169)
b6d1bdfe2c publish rialto parachain collator image (#1171)
834ae4a10a Fix OutboundLaneData types (#1159)
5ee0ea1626 copypasted -> copied (#1168)
c3bb835f18 fix spelling (#1167)
f90d041dc9 Upgrade `jsonrpsee` to v0.3 (#1051)
598c9b6d0d add some basic tests for swap tokens (#1164)
05e88c61f5 publish images when tag of specific format(e.g. v2021-09-27 + v2021-09-27-1) is published (#1166)
7f3f94a6e0 Fix CI again (#1165)
ff37de332f Move calculation relayer reward into `MessageDeliveryAndDispatchPayment` (#1153)
36fbba839b fix clippy warning (#1163)
16da44d018 explicit wasm build (#1158)
c9c8226449 Match substrate's fmt (#1148)
2fdd7f3e5e Fix/ignore clippy warnings (#1157)
43dfcc2686 Adding LookupAddress (#1156)
951eaa5582 Add rialto-parachain runtime and node (#1142)
803d266d61 Rename MessageId -> BridgeMessageId (#1152)
5f234484fc Box large arguments of GRANDPA pallet (#1154)
cf9abc1011 Fix spelling (#1150)
ab83ba2e58 Relay subcommand that performs token RLT <> MLAU token swap (#1141)
832536caf0 Polkadot <> Kusama relayers (#1122)
6d0daa8975 Add `OnMessageAccepted` callback (#1134)
5d03a20b3e Integrate token swap pallet into Millau runtime (#1099)
ea4cfa833e Adding MultiAddress type and ValidationCodeHash (#1139)
c20325a784 Add tests for `Raw` and `BridgeSendMessage` enum `Call` variants (#1125)
6d802416e2 increase pause before pining Rialto nodes (#1137)
b54fa56b62 calculate fee using full message payload (#1132)
ca5d8178f5 Add parachain pallets to rialto runtime (#1053)
9eaae4142e fix transaction resubmitter limits for Millau -> Rialto transactions (#1135)
9d4e17783c add --mandatory-headers-only cli option to complex relay (#1129)
1c5e0ec1cb Add local CI info to README (#1131)
a8e0929e14 chore: spellchecker fixes (#1130)
3b8e2118e3 set fee for importing mandatory headers to zero (#1127)
49bba9aa52 another bunch of words for spellchecker (#1128)
8a72eafef6 Increase pause before messages generation start (#1126)
1f0ba9a191 Move some associated types from relay_substrate_client::Chain to bp_runtime::Chain (#1087)
74bc1a5b54 Transactions resubmitter (#1083)
21ba001f26 log max balance drop when sending message (#1117)
638a7ddffa Code Cleaning (#1124)
be6555c51b Fix buildah logout (#1120)
87539c4a98 Format code work (#1116)
526fe7fdd7 fix spelling (#1119)
bd4ce7f241 Fix spelling (#1118)
3c1147858e added missing constants to Kusama/Polkadot primitives (#1114)
52093b22ab Fix delivery transaction estimation used by rational relayer (#1109)
77a2f2fbed Remove fund account checks from upgrade. (#1111)
824334802b Rename param and update comment (#1108)
d7784bfe06 Fix spellcheck (#1110)
0b18f5906a Refactor substrate messages source and substrate messages target (#1105)
b27240bbff fix compilation (#1107)
9697da4fe8 Emit mortal transactions from relay (#1073)
b29396c077 Change vault vars type to env vars (#1084)
35e0bbdc0c Make clippy mandatory. (#1103)
a517e8541f Remove unused deps (#1102)
873dae608a Remove unnessary deps (#1101)
13450b74ee Stored conversion rate updater (#1005)
74389829f3 [BREAKING] Migrate messages pallet to frame v2 (#1088)
424da938dd README fix (#1100)
865744c909 upgrade currency exchange pallet to frame v2 (#1097)
b5038148b3 Add missing docs (#1095)
0791e911c1 Common crate for substrate-relay (#1082)
3834c9d880 Update high-level-overview.md (#1093)
c93553face Increase the time window for messaging alerts. (#1092)
8b9cc3cecd migrate pallet-shift-session-manager to frame v2 (#1090)
dc91813c22 migrate eth PoA pallet to frame v2 (#1091)
f16bb098cc Migrate dispatch pallet  to frame v2 (#1089)
19f4325348 Bridge/This Chain Ids should be exposed as constants on pallet level. (#1085)
6381122df7 Change ChainSpec::from_genesis for Rialto and Millau chains to reflect the chain names. (#1079)
0f1d33e973 Make CI happy again (#1086)
238e65d96f fix typo (#1080)
fc008457b6 Token-swap-over-bridge pallet (#944)
3fb97fa5ef Fix full spellcheck (#1076)
eae4ed7170 fixed wrong trace (#1075)
219a0fad04 merge two weight-related loops in messages pallet (#1071)
fc85632fdb increase_message_fee depends on stored mesage size (#1066)
530f37a23b companion for https://github.com/paritytech/polkadot/pull/3507 (#1067)
53b8cba683 sc_basic_authorship=trace for millau nodes (#1074)
9874e05e98 Improve traces of message generator scripts (#1069)
7b5ee84fbb extract message_details impl into runtime common (#1070)
5a4aed5a8b refund weight for mot pruning messages (#1062)
90e3d1e111 Fix Westend -> Millau sync (#1064)
427d30ddfc When restarting client, also "restart" tokio runtime (#1065)
d47c05eeef Change get pipeline sensitive variables from Vault instead of GitLab settings (#1063)
d775a85415 use tokio reactor to execute jsonrpsee futures (#1061)
15c8cd61cb Use BABE to author blocks on Rialto (previously: Aura) (#1050)
5186293500 Allow reading suri && password override from file (#1059)
b506298262 Update jsonrpsee reference (#1049)
1734d00517 enable weight fee adjustent in Rialto/Millau (#1044)
607265afae Pay dispatch fee at target chain cli option (#1043)
ce79ef91be bump dependencies before start referencing polkadot repo (#1048)
924fa24f6d Cli option for greedy relayer + run no-losses relayer by default (#1042)
e21eba7b59 Yrong README Fixup + M1 Fixes (#1045)
20d08204a2 Confirm delivery detects when more than expected messages are confirmed (#1039)
994b846b52 pre and post dispatch weights of OnDeliveryConfirmed callback (#1040)
1dd5297e84 give real value to Rialto and Millau tokens (#1038)
035bee8715 Use real conversion rate in greedy relayer strategy (#1035)
9cfaecd0f7 fixed metrics prefix (#1037)
1d8d224937 Use kebab-case for bridge arguments (#1036)
f30a4c79a6 Shared reference to conversion rate metric value (#1034)
c34d7a5cbb estimate transaction fee (#1015)
93404b18bb change alert period from 2m to 10m for Westend -> Millau (GRANDPA or public node itself is lagging sometimes) (#1032)

git-subtree-dir: bridges
git-subtree-split: 407bf44a8a5f4e60aceef2dc755cd9ff09929ac3
This commit is contained in:
antonio-dropulic
2021-12-01 09:24:53 +01:00
parent feefc34567
commit 392447f5c8
1020 changed files with 30080 additions and 179754 deletions
Download Patch File Download Diff File Expand all files Collapse all files
polkadot/bridges/modules/messages/src/outbound_lane.rs
-410
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@@ -1,410 +0,0 @@
// Copyright 2019-2021 Parity Technologies (UK) Ltd.
// This file is part of Parity Bridges Common.
// Parity Bridges Common is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity Bridges Common is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity Bridges Common. If not, see <http://www.gnu.org/licenses/>.
//! Everything about outgoing messages sending.
use bitvec::prelude::*;
use bp_messages::{
DeliveredMessages, DispatchResultsBitVec, LaneId, MessageData, MessageNonce, OutboundLaneData, UnrewardedRelayer,
};
use frame_support::RuntimeDebug;
use sp_std::collections::vec_deque::VecDeque;
/// Outbound lane storage.
pub trait OutboundLaneStorage {
/// Delivery and dispatch fee type on source chain.
type MessageFee;
/// Lane id.
fn id(&self) -> LaneId;
/// Get lane data from the storage.
fn data(&self) -> OutboundLaneData;
/// Update lane data in the storage.
fn set_data(&mut self, data: OutboundLaneData);
/// Returns saved outbound message payload.
#[cfg(test)]
fn message(&self, nonce: &MessageNonce) -> Option<MessageData<Self::MessageFee>>;
/// Save outbound message in the storage.
fn save_message(&mut self, nonce: MessageNonce, message_data: MessageData<Self::MessageFee>);
/// Remove outbound message from the storage.
fn remove_message(&mut self, nonce: &MessageNonce);
}
/// Result of messages receival confirmation.
#[derive(RuntimeDebug, PartialEq, Eq)]
pub enum ReceivalConfirmationResult {
/// New messages have been confirmed by the confirmation transaction.
ConfirmedMessages(DeliveredMessages),
/// Confirmation transaction brings no new confirmation. This may be a result of relayer
/// error or several relayers runnng.
NoNewConfirmations,
/// Bridged chain is trying to confirm more messages than we have generated. May be a result
/// of invalid bridged chain storage.
FailedToConfirmFutureMessages,
/// The unrewarded relayers vec contains an empty entry. May be a result of invalid bridged
/// chain storage.
EmptyUnrewardedRelayerEntry,
/// The unrewarded relayers vec contains non-consecutive entries. May be a result of invalid bridged
/// chain storage.
NonConsecutiveUnrewardedRelayerEntries,
/// The unrewarded relayers vec contains entry with mismatched number of dispatch results. May be
/// a result of invalid bridged chain storage.
InvalidNumberOfDispatchResults,
}
/// Outbound messages lane.
pub struct OutboundLane<S> {
storage: S,
}
impl<S: OutboundLaneStorage> OutboundLane<S> {
/// Create new inbound lane backed by given storage.
pub fn new(storage: S) -> Self {
OutboundLane { storage }
}
/// Get this lane data.
pub fn data(&self) -> OutboundLaneData {
self.storage.data()
}
/// Send message over lane.
///
/// Returns new message nonce.
pub fn send_message(&mut self, message_data: MessageData<S::MessageFee>) -> MessageNonce {
let mut data = self.storage.data();
let nonce = data.latest_generated_nonce + 1;
data.latest_generated_nonce = nonce;
self.storage.save_message(nonce, message_data);
self.storage.set_data(data);
nonce
}
/// Confirm messages delivery.
pub fn confirm_delivery<RelayerId>(
&mut self,
latest_received_nonce: MessageNonce,
relayers: &VecDeque<UnrewardedRelayer<RelayerId>>,
) -> ReceivalConfirmationResult {
let mut data = self.storage.data();
if latest_received_nonce <= data.latest_received_nonce {
return ReceivalConfirmationResult::NoNewConfirmations;
}
if latest_received_nonce > data.latest_generated_nonce {
return ReceivalConfirmationResult::FailedToConfirmFutureMessages;
}
let dispatch_results =
match extract_dispatch_results(data.latest_received_nonce, latest_received_nonce, relayers) {
Ok(dispatch_results) => dispatch_results,
Err(extract_error) => return extract_error,
};
let prev_latest_received_nonce = data.latest_received_nonce;
data.latest_received_nonce = latest_received_nonce;
self.storage.set_data(data);
ReceivalConfirmationResult::ConfirmedMessages(DeliveredMessages {
begin: prev_latest_received_nonce + 1,
end: latest_received_nonce,
dispatch_results,
})
}
/// Prune at most `max_messages_to_prune` already received messages.
///
/// Returns number of pruned messages.
pub fn prune_messages(&mut self, max_messages_to_prune: MessageNonce) -> MessageNonce {
let mut pruned_messages = 0;
let mut anything_changed = false;
let mut data = self.storage.data();
while pruned_messages < max_messages_to_prune && data.oldest_unpruned_nonce <= data.latest_received_nonce {
self.storage.remove_message(&data.oldest_unpruned_nonce);
anything_changed = true;
pruned_messages += 1;
data.oldest_unpruned_nonce += 1;
}
if anything_changed {
self.storage.set_data(data);
}
pruned_messages
}
}
/// Extract new dispatch results from the unrewarded relayers vec.
///
/// Returns `Err(_)` if unrewarded relayers vec contains invalid data, meaning that the bridged
/// chain has invalid runtime storage.
fn extract_dispatch_results<RelayerId>(
prev_latest_received_nonce: MessageNonce,
latest_received_nonce: MessageNonce,
relayers: &VecDeque<UnrewardedRelayer<RelayerId>>,
) -> Result<DispatchResultsBitVec, ReceivalConfirmationResult> {
// the only caller of this functions checks that the prev_latest_received_nonce..=latest_received_nonce
// is valid, so we're ready to accept messages in this range
// => with_capacity call must succeed here or we'll be unable to receive confirmations at all
let mut received_dispatch_result =
BitVec::with_capacity((latest_received_nonce - prev_latest_received_nonce + 1) as _);
let mut last_entry_end: Option<MessageNonce> = None;
for entry in relayers {
// unrewarded relayer entry must have at least 1 unconfirmed message
// (guaranteed by the `InboundLane::receive_message()`)
if entry.messages.end < entry.messages.begin {
return Err(ReceivalConfirmationResult::EmptyUnrewardedRelayerEntry);
}
// every entry must confirm range of messages that follows previous entry range
// (guaranteed by the `InboundLane::receive_message()`)
if let Some(last_entry_end) = last_entry_end {
let expected_entry_begin = last_entry_end.checked_add(1);
if expected_entry_begin != Some(entry.messages.begin) {
return Err(ReceivalConfirmationResult::NonConsecutiveUnrewardedRelayerEntries);
}
}
last_entry_end = Some(entry.messages.end);
// entry can't confirm messages larger than `inbound_lane_data.latest_received_nonce()`
// (guaranteed by the `InboundLane::receive_message()`)
if entry.messages.end > latest_received_nonce {
// technically this will be detected in the next loop iteration as `InvalidNumberOfDispatchResults`
// but to guarantee safety of loop operations below this is detected now
return Err(ReceivalConfirmationResult::FailedToConfirmFutureMessages);
}
// entry must have single dispatch result for every message
// (guaranteed by the `InboundLane::receive_message()`)
if entry.messages.dispatch_results.len() as MessageNonce != entry.messages.end - entry.messages.begin + 1 {
return Err(ReceivalConfirmationResult::InvalidNumberOfDispatchResults);
}
// now we know that the entry is valid
// => let's check if it brings new confirmations
let new_messages_begin = sp_std::cmp::max(entry.messages.begin, prev_latest_received_nonce + 1);
let new_messages_end = sp_std::cmp::min(entry.messages.end, latest_received_nonce);
let new_messages_range = new_messages_begin..=new_messages_end;
if new_messages_range.is_empty() {
continue;
}
// now we know that entry brings new confirmations
// => let's extract dispatch results
received_dispatch_result.extend_from_bitslice(
&entry.messages.dispatch_results[(new_messages_begin - entry.messages.begin) as usize..],
);
}
Ok(received_dispatch_result)
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{
mock::{message_data, run_test, unrewarded_relayer, TestRelayer, TestRuntime, REGULAR_PAYLOAD, TEST_LANE_ID},
outbound_lane,
};
use sp_std::ops::RangeInclusive;
fn unrewarded_relayers(nonces: RangeInclusive<MessageNonce>) -> VecDeque<UnrewardedRelayer<TestRelayer>> {
vec![unrewarded_relayer(*nonces.start(), *nonces.end(), 0)]
.into_iter()
.collect()
}
fn delivered_messages(nonces: RangeInclusive<MessageNonce>) -> DeliveredMessages {
DeliveredMessages {
begin: *nonces.start(),
end: *nonces.end(),
dispatch_results: bitvec![Msb0, u8; 1; (nonces.end() - nonces.start() + 1) as _],
}
}
fn assert_3_messages_confirmation_fails(
latest_received_nonce: MessageNonce,
relayers: &VecDeque<UnrewardedRelayer<TestRelayer>>,
) -> ReceivalConfirmationResult {
run_test(|| {
let mut lane = outbound_lane::<TestRuntime, _>(TEST_LANE_ID);
lane.send_message(message_data(REGULAR_PAYLOAD));
lane.send_message(message_data(REGULAR_PAYLOAD));
lane.send_message(message_data(REGULAR_PAYLOAD));
assert_eq!(lane.storage.data().latest_generated_nonce, 3);
assert_eq!(lane.storage.data().latest_received_nonce, 0);
let result = lane.confirm_delivery(latest_received_nonce, relayers);
assert_eq!(lane.storage.data().latest_generated_nonce, 3);
assert_eq!(lane.storage.data().latest_received_nonce, 0);
result
})
}
#[test]
fn send_message_works() {
run_test(|| {
let mut lane = outbound_lane::<TestRuntime, _>(TEST_LANE_ID);
assert_eq!(lane.storage.data().latest_generated_nonce, 0);
assert_eq!(lane.send_message(message_data(REGULAR_PAYLOAD)), 1);
assert!(lane.storage.message(&1).is_some());
assert_eq!(lane.storage.data().latest_generated_nonce, 1);
});
}
#[test]
fn confirm_delivery_works() {
run_test(|| {
let mut lane = outbound_lane::<TestRuntime, _>(TEST_LANE_ID);
assert_eq!(lane.send_message(message_data(REGULAR_PAYLOAD)), 1);
assert_eq!(lane.send_message(message_data(REGULAR_PAYLOAD)), 2);
assert_eq!(lane.send_message(message_data(REGULAR_PAYLOAD)), 3);
assert_eq!(lane.storage.data().latest_generated_nonce, 3);
assert_eq!(lane.storage.data().latest_received_nonce, 0);
assert_eq!(
lane.confirm_delivery(3, &unrewarded_relayers(1..=3)),
ReceivalConfirmationResult::ConfirmedMessages(delivered_messages(1..=3)),
);
assert_eq!(lane.storage.data().latest_generated_nonce, 3);
assert_eq!(lane.storage.data().latest_received_nonce, 3);
});
}
#[test]
fn confirm_delivery_rejects_nonce_lesser_than_latest_received() {
run_test(|| {
let mut lane = outbound_lane::<TestRuntime, _>(TEST_LANE_ID);
lane.send_message(message_data(REGULAR_PAYLOAD));
lane.send_message(message_data(REGULAR_PAYLOAD));
lane.send_message(message_data(REGULAR_PAYLOAD));
assert_eq!(lane.storage.data().latest_generated_nonce, 3);
assert_eq!(lane.storage.data().latest_received_nonce, 0);
assert_eq!(
lane.confirm_delivery(3, &unrewarded_relayers(1..=3)),
ReceivalConfirmationResult::ConfirmedMessages(delivered_messages(1..=3)),
);
assert_eq!(
lane.confirm_delivery(3, &unrewarded_relayers(1..=3)),
ReceivalConfirmationResult::NoNewConfirmations,
);
assert_eq!(lane.storage.data().latest_generated_nonce, 3);
assert_eq!(lane.storage.data().latest_received_nonce, 3);
assert_eq!(
lane.confirm_delivery(2, &unrewarded_relayers(1..=1)),
ReceivalConfirmationResult::NoNewConfirmations,
);
assert_eq!(lane.storage.data().latest_generated_nonce, 3);
assert_eq!(lane.storage.data().latest_received_nonce, 3);
});
}
#[test]
fn confirm_delivery_rejects_nonce_larger_than_last_generated() {
assert_eq!(
assert_3_messages_confirmation_fails(10, &unrewarded_relayers(1..=10),),
ReceivalConfirmationResult::FailedToConfirmFutureMessages,
);
}
#[test]
fn confirm_delivery_fails_if_entry_confirms_future_messages() {
assert_eq!(
assert_3_messages_confirmation_fails(
3,
&unrewarded_relayers(1..=1)
.into_iter()
.chain(unrewarded_relayers(2..=30).into_iter())
.chain(unrewarded_relayers(3..=3).into_iter())
.collect(),
),
ReceivalConfirmationResult::FailedToConfirmFutureMessages,
);
}
#[test]
#[allow(clippy::reversed_empty_ranges)]
fn confirm_delivery_fails_if_entry_is_empty() {
assert_eq!(
assert_3_messages_confirmation_fails(
3,
&unrewarded_relayers(1..=1)
.into_iter()
.chain(unrewarded_relayers(2..=1).into_iter())
.chain(unrewarded_relayers(2..=3).into_iter())
.collect(),
),
ReceivalConfirmationResult::EmptyUnrewardedRelayerEntry,
);
}
#[test]
fn confirm_delivery_fails_if_entries_are_non_consecutive() {
assert_eq!(
assert_3_messages_confirmation_fails(
3,
&unrewarded_relayers(1..=1)
.into_iter()
.chain(unrewarded_relayers(3..=3).into_iter())
.chain(unrewarded_relayers(2..=2).into_iter())
.collect(),
),
ReceivalConfirmationResult::NonConsecutiveUnrewardedRelayerEntries,
);
}
#[test]
fn confirm_delivery_fails_if_number_of_dispatch_results_in_entry_is_invalid() {
let mut relayers: VecDeque<_> = unrewarded_relayers(1..=1)
.into_iter()
.chain(unrewarded_relayers(2..=2).into_iter())
.chain(unrewarded_relayers(3..=3).into_iter())
.collect();
relayers[0].messages.dispatch_results.clear();
assert_eq!(
assert_3_messages_confirmation_fails(3, &relayers),
ReceivalConfirmationResult::InvalidNumberOfDispatchResults,
);
}
#[test]
fn prune_messages_works() {
run_test(|| {
let mut lane = outbound_lane::<TestRuntime, _>(TEST_LANE_ID);
// when lane is empty, nothing is pruned
assert_eq!(lane.prune_messages(100), 0);
assert_eq!(lane.storage.data().oldest_unpruned_nonce, 1);
// when nothing is confirmed, nothing is pruned
lane.send_message(message_data(REGULAR_PAYLOAD));
lane.send_message(message_data(REGULAR_PAYLOAD));
lane.send_message(message_data(REGULAR_PAYLOAD));
assert_eq!(lane.prune_messages(100), 0);
assert_eq!(lane.storage.data().oldest_unpruned_nonce, 1);
// after confirmation, some messages are received
assert_eq!(
lane.confirm_delivery(2, &unrewarded_relayers(1..=2)),
ReceivalConfirmationResult::ConfirmedMessages(delivered_messages(1..=2)),
);
assert_eq!(lane.prune_messages(100), 2);
assert_eq!(lane.storage.data().oldest_unpruned_nonce, 3);
// after last message is confirmed, everything is pruned
assert_eq!(
lane.confirm_delivery(3, &unrewarded_relayers(3..=3)),
ReceivalConfirmationResult::ConfirmedMessages(delivered_messages(3..=3)),
);
assert_eq!(lane.prune_messages(100), 1);
assert_eq!(lane.storage.data().oldest_unpruned_nonce, 4);
});
}
}