pezkuwichain/pezkuwi-subxt
1
0
Fork 0
mirror of https://github.com/pezkuwichain/pezkuwi-subxt.git synced 2026-04-26 18:07:58 +00:00
Code Issues Packages Projects Releases Wiki Activity

Reward delivery confirmation transaction submitter (aka confirmation relayer) (#599)

Browse Source 
* reward confirmation relayer

* Update modules/message-lane/src/instant_payments.rs

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>

* added some constants

* pallet_balances

* removed comment

* fix typo

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>
This commit is contained in:
Svyatoslav Nikolsky
2021-01-15 00:11:51 +03:00
committed by Bastian Köcher
parent 2cfd2e72b7
commit f3ea6a8d3d
8 changed files with 253 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files
bridges/modules/message-lane/src/lib.rs
+17 -15
View File
@@ -41,7 +41,7 @@ use crate::inbound_lane::{InboundLane, InboundLaneStorage};
use crate::outbound_lane::{OutboundLane, OutboundLaneStorage};
use bp_message_lane::{
source_chain::{LaneMessageVerifier, MessageDeliveryAndDispatchPayment, TargetHeaderChain},
source_chain::{LaneMessageVerifier, MessageDeliveryAndDispatchPayment, RelayersRewards, TargetHeaderChain},
target_chain::{DispatchMessage, MessageDispatch, ProvedLaneMessages, ProvedMessages, SourceHeaderChain},
total_unrewarded_messages, InboundLaneData, LaneId, MessageData, MessageKey, MessageNonce, MessagePayload,
OutboundLaneData, UnrewardedRelayersState,
@@ -106,7 +106,7 @@ pub trait Config<I = DefaultInstance>: frame_system::Config {
/// Payload type of outbound messages. This payload is dispatched on the bridged chain.
type OutboundPayload: Parameter + Size;
/// Message fee type of outbound messages. This fee is paid on this chain.
type OutboundMessageFee: From<u32> + Parameter + SaturatingAdd + Zero;
type OutboundMessageFee: Default + From<u32> + Parameter + SaturatingAdd + Zero;
/// Payload type of inbound messages. This payload is dispatched on this chain.
type InboundPayload: Decode;
@@ -464,40 +464,42 @@ decl_module! {
// mark messages as delivered
let mut lane = outbound_lane::<T, I>(lane_id);
let mut relayers_rewards: RelayersRewards<_, T::OutboundMessageFee> = RelayersRewards::new();
let last_delivered_nonce = lane_data.last_delivered_nonce();
let received_range = lane.confirm_delivery(last_delivered_nonce);
if let Some(received_range) = received_range {
Self::deposit_event(RawEvent::MessagesDelivered(lane_id, received_range.0, received_range.1));
// reward relayers that have delivered messages
// remember to reward relayers that have delivered messages
// this loop is bounded by `T::MaxUnrewardedRelayerEntriesAtInboundLane` on the bridged chain
let relayer_fund_account = Self::relayer_fund_account_id();
for (nonce_low, nonce_high, relayer) in lane_data.relayers {
let nonce_begin = sp_std::cmp::max(nonce_low, received_range.0);
let nonce_end = sp_std::cmp::min(nonce_high, received_range.1);
// loop won't proceed if current entry is ahead of received range (begin > end).
// this loop is bound by `T::MaxUnconfirmedMessagesAtInboundLane` on the bridged chain
let mut relayer_fee: T::OutboundMessageFee = Zero::zero();
let mut relayer_reward = relayers_rewards.entry(relayer).or_default();
for nonce in nonce_begin..nonce_end + 1 {
let message_data = OutboundMessages::<T, I>::get(MessageKey {
lane_id,
nonce,
}).expect("message was just confirmed; we never prune unconfirmed messages; qed");
relayer_fee = relayer_fee.saturating_add(&message_data.fee);
}
if !relayer_fee.is_zero() {
<T as Config<I>>::MessageDeliveryAndDispatchPayment::pay_relayer_reward(
&confirmation_relayer,
&relayer,
&relayer_fee,
&relayer_fund_account,
);
relayer_reward.reward = relayer_reward.reward.saturating_add(&message_data.fee);
relayer_reward.messages += 1;
}
}
}
// if some new messages have been confirmed, reward relayers
if !relayers_rewards.is_empty() {
let relayer_fund_account = Self::relayer_fund_account_id();
<T as Config<I>>::MessageDeliveryAndDispatchPayment::pay_relayers_rewards(
&confirmation_relayer,
relayers_rewards,
&relayer_fund_account,
);
}
frame_support::debug::trace!(
"Received messages delivery proof up to (and including) {} at lane {:?}",
last_delivered_nonce,