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lower limit for message weight (#536)

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* lower limit for message weight

* fmt

* do not include tx overhead in weights returned by weight_limits_of_message_on_bridged_chain

* Use correct chain in comment

Co-authored-by: Hernando Castano <HCastano@users.noreply.github.com>
This commit is contained in:
Svyatoslav Nikolsky
2020-12-01 09:54:40 +03:00
committed by Bastian Köcher
parent 951aa36c2b
commit a872ee6ff1
3 changed files with 39 additions and 13 deletions
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bridges/bin/runtime-common/src/messages.rs
+15 -5
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@@ -30,7 +30,7 @@ use bp_runtime::InstanceId;
use codec::{Compact, Decode, Input};
use frame_support::{traits::Instance, RuntimeDebug};
use sp_runtime::traits::{CheckedAdd, CheckedDiv, CheckedMul};
use sp_std::{cmp::PartialOrd, marker::PhantomData, vec::Vec};
use sp_std::{cmp::PartialOrd, marker::PhantomData, ops::RangeInclusive, vec::Vec};
use sp_trie::StorageProof;
/// Bidirectional message bridge.
@@ -46,8 +46,18 @@ pub trait MessageBridge {
/// Bridged chain in context of message bridge.
type BridgedChain: ChainWithMessageLanes;
/// Maximal (dispatch) weight of the message that we are able to send to Bridged chain.
fn maximal_dispatch_weight_of_message_on_bridged_chain() -> WeightOf<BridgedChain<Self>>;
/// Returns feasible weights range for given message payload on the target chain.
///
/// If message is being sent with the weight that is out of this range, then it
/// should be rejected.
///
/// Weights returned from this function shall not include transaction overhead
/// (like weight of signature and signed extensions verification), because they're
/// already accounted by the `weight_of_delivery_transaction`. So this function should
/// return pure call dispatch weights range.
fn weight_limits_of_message_on_bridged_chain(
message_payload: &[u8],
) -> RangeInclusive<WeightOf<BridgedChain<Self>>>;
/// Maximal weight of single message delivery transaction on Bridged chain.
fn weight_of_delivery_transaction() -> WeightOf<BridgedChain<Self>>;
@@ -425,7 +435,7 @@ mod tests {
type ThisChain = ThisChain;
type BridgedChain = BridgedChain;
fn maximal_dispatch_weight_of_message_on_bridged_chain() -> Weight {
fn weight_limits_of_message_on_bridged_chain(_message_payload: &[u8]) -> RangeInclusive<Weight> {
unreachable!()
}
@@ -464,7 +474,7 @@ mod tests {
type ThisChain = BridgedChain;
type BridgedChain = ThisChain;
fn maximal_dispatch_weight_of_message_on_bridged_chain() -> Weight {
fn weight_limits_of_message_on_bridged_chain(_message_payload: &[u8]) -> RangeInclusive<Weight> {
unreachable!()
}