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Svyatoslav Nikolsky
097308e385
This PR adds [Rococo People](https://github.com/paritytech/polkadot-sdk/pull/2281) <> [Rococo Bulletin](https://github.com/zdave-parity/polkadot-bulletin-chain) to the Rococo Bridge Hub code. There's a couple of things left to do here: - [x] add remaining tests - it'd need some refactoring in the `bridge-hub-test-utils` - will do in a separate PR; - [x] actually run benchmarks for new messaging pallet (do we have bot nowadays?). The reason why I'm opening it before this ^^^ is ready, is that I'd like to hear others opinion on how to deal with hacks with that bridge. Initially I was assuming that Rococo Bulletin will be the 1:1 copy of the Polkadot Bulletin (to avoid maintaining multiple runtimes/releases/...), so you can see many `PolkadotBulletin` mentions in this PR, even though we are going to bridge with the parallel chain (`RococoBulletin`). That's because e.g. pallet names from `construct_runtime` are affecting runtime storage keys and bridges are using runtime storage proofs => it is important to use names that the Bulletin chain expects. But in the end, this hack won't work - we can't use Polkadot Bulletin runtime to bridge with Rococo Bridge Hub, because Polkadot Bulletin expects Polkadot Bridge hub to use `1002` parachain id and Rococo Bridge Hub seats on the `1013`. This also affects storage keys using in bridging, so I had to add the [`rococo` feature](https://github.com/svyatonik/polkadot-bulletin-chain/blob/add-bridge-pallets/runtime/Cargo.toml#L198) to the Bulletin chain. So now we can actually alter its runtime and adapt it for Rococo. So the question here is - what's better for us here - to leave everything as is (seems hacky and non-trivial); - change Bulletin chain runtime when `rococo` feature is used - e.g. use proper names there (`WithPolkadotGrandpa` -> `WithRococoGrandpa`, ...) - add another set of pallets to the Bulletin chain runtime to bridge with Rococo and never use them in production. Similar to hack that we had in Rococo/Wococo cc @acatangiu @bkontur @serban300 also cc @joepetrowski as the main "client" of this bridge --- A couple words on how this bridge is different from the Rococo <> Westend bridge: - it is a bridge with a chain that uses GRANDPA finality, not the parachain finality (hence the tests needs to be changed); - it is a fee-free bridge. So `AllowExplicitUnpaidExecutionFrom<Equals<SiblingPeople>>` + we are not paying any rewards to relayers (apart from compensating transaction costs). --------- Signed-off-by: dependabot[bot] <support@github.com> Signed-off-by: Andrei Sandu <andrei-mihail@parity.io> Co-authored-by: Adrian Catangiu <adrian@parity.io> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Andrei Sandu <54316454+sandreim@users.noreply.github.com> Co-authored-by: Egor_P <egor@parity.io> Co-authored-by: command-bot <>
Parachains
This directory is the home of Parity-developed parachain runtimes. This directory is runtime focused, and does not include builds of parachain nodes.
The general internal structure is:
chain-specs: Chain specs for the runtimes contained in its sibling dirruntimes.common: Common configurations,impls, etc. used by several parachain runtimes.integration-tests: Integration tests to test parachain interactions via XCM.pallets: FRAME pallets that are specific to parachains.runtimes: The entry point for parachain runtimes.
System Parachains
The runtimes directory includes many, but is not limited to,
system parachains. Likewise, not all
system parachains are in this repo.
Releases
The project maintainers generally try to release a set of parachain runtimes for each Polkadot Relay Chain runtime release.