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DMP Queue pallet (#416)

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* Introduce the converter into the hub

* Parachain recognises Rococo governance body as admin

* Whitespace

* Use UsingComponents for fee payment in XCM

* Fixes

* Fixes for XCM permissions

* Remove encode_call test

* Fixes

* Rococo Collator supports Shell runtime

* Fixes

* Fixes

* Initial draft of DMP Queue pallet

* DMP Queue builds.

* Companion for Polkadot gav-allow-xcm-exec

* Bump

* Fix std

* Fixes

* fix and improve docs

* fix compile errors in tests

* add test for try_service_message

* update cargo.lock

* Fixes

* Make test name read well

* Fixes

* Add a couple of simple tests

* Tests

* Tests

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>

* Chain ID and ParaID don't collide

* Fixes

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* Update pallets/dmp-queue/src/lib.rs

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>

* Fixes

Co-authored-by: Alexander Popiak <alexander.popiak@parity.io>
Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
This commit is contained in:
Gavin Wood
2021-05-02 16:11:58 +02:00
committed by GitHub
parent 67102885dd
commit dd5ad841a0
14 changed files with 1279 additions and 369 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cumulus/primitives/core/src/lib.rs
+20 -6
View File
@@ -118,12 +118,23 @@ pub mod well_known_keys {
}
/// Something that should be called when a downward message is received.
pub trait DownwardMessageHandler {
/// Handle the given downward message.
fn handle_downward_message(msg: InboundDownwardMessage) -> Weight;
pub trait DmpMessageHandler {
/// Handle some incoming DMP messages (note these are individual XCM messages).
///
/// Also, process messages up to some `max_weight`.
fn handle_dmp_messages(
iter: impl Iterator<Item=(RelayBlockNumber, Vec<u8>)>,
max_weight: Weight,
) -> Weight;
}
impl DownwardMessageHandler for () {
fn handle_downward_message(_msg: InboundDownwardMessage) -> Weight { 0 }
impl DmpMessageHandler for () {
fn handle_dmp_messages(
iter: impl Iterator<Item=(RelayBlockNumber, Vec<u8>)>,
_max_weight: Weight,
) -> Weight {
for _ in iter {}
0
}
}
/// Something that should be called for each batch of messages received over XCMP.
@@ -141,7 +152,10 @@ impl XcmpMessageHandler for () {
fn handle_xcmp_messages<'a, I: Iterator<Item=(ParaId, RelayBlockNumber, &'a [u8])>>(
iter: I,
_max_weight: Weight,
) -> Weight { for _ in iter {} 0 }
) -> Weight {
for _ in iter {}
0
}
}
/// Something that should be called when sending an upward message.
cumulus/primitives/utility/src/lib.rs
+4 -29
View File
@@ -19,11 +19,10 @@
#![cfg_attr(not(feature = "std"), no_std)]
use sp_std::{marker::PhantomData, convert::TryFrom};
use codec::{Encode, Decode};
use cumulus_primitives_core::{UpwardMessageSender, DownwardMessageHandler, InboundDownwardMessage};
use xcm::{VersionedXcm, v0::{Xcm, MultiLocation, Junction, SendXcm, Error as XcmError, ExecuteXcm}};
use frame_support::{traits::Get, dispatch::Weight};
use sp_std::marker::PhantomData;
use codec::Encode;
use cumulus_primitives_core::UpwardMessageSender;
use xcm::{VersionedXcm, v0::{Xcm, MultiLocation, Junction, SendXcm, Error as XcmError}};
/// Xcm router which recognises the `Parent` destination and handles it by sending the message into
/// the given UMP `UpwardMessageSender` implementation. Thus this essentially adapts an
@@ -51,27 +50,3 @@ impl<T: UpwardMessageSender> SendXcm for ParentAsUmp<T> {
}
}
/// For an incoming downward message, this just adapts an XCM executor and executes DMP messages
/// immediately up until some `MaxWeight` at which point it errors. Their origin is asserted to be
/// the Parent location.
pub struct UnqueuedDmpAsParent<MaxWeight, XcmExecutor, Call>(
PhantomData<(MaxWeight, XcmExecutor, Call)>
);
impl<
MaxWeight: Get<Weight>,
XcmExecutor: ExecuteXcm<Call>,
Call,
> DownwardMessageHandler for UnqueuedDmpAsParent<MaxWeight, XcmExecutor, Call> {
fn handle_downward_message(msg: InboundDownwardMessage) -> Weight {
let msg = VersionedXcm::<Call>::decode(&mut &msg.msg[..])
.map(Xcm::<Call>::try_from);
match msg {
Ok(Ok(x)) => {
let weight_limit = MaxWeight::get();
XcmExecutor::execute_xcm(Junction::Parent.into(), x, weight_limit).weight_used()
}
Ok(Err(..)) => 0,
Err(..) => 0,
}
}
}