Rococo/Wococo bridge hub relay integration (paritytech#1565)

* [BridgeHub] Added bridge-hub-rococo/wococo clients with bridge-hub-rococo-runtime

* [BridgeHub] Add init-bridge stuff for bridge-hub-rococo/wococo

* [BridgeHub] Add init-bridge stuff for bridge-hub-rococo/wococo

* [BridgeHub] Fixed Call-encoding for init-bridge rococo runtime wrapper

* Final index update to runtime calls

* [BridgeHub] Add init-bridge stuff for bridge-hub-rococo/wococo (otherside)

* Added runtime best_finalized functions + relay-headers init

* Renaming and change BridgeHubRococo/Wococo to Rococo/Wococo config

* [BridgeHub] Add relay-parachains (Rococo/Wococo)

* Missing stuff for adding xcm messaging to BridgeHub

* extracted parachain IDs to the primitives

* fix compilation

* Fixes

* Init setup for Rococo->Wococo messaging support

* Removed unused AccountId from `trait MessagesBridge`

* Removed unused trait SenderOrigin

* Small fixes

* Cleaning after master-merge

* Fixes

* Fixes

* Fixes

* Fixes

* Fixes:
- align WeightToFee with BridgeHubRococo runtime
- MAX_HEADER_SIZE
- updated TODOs

* Added relay_messages cfg for BridgeHubWococo -> BridgeHubRococo

Co-authored-by: Svyatoslav Nikolsky <svyatonik@gmail.com>

.config/lingua.dic

@@ -16,6 +16,9 @@ Best/MS
 BlockId
 BlockNumber
 BridgeStorage
+BridgeHub
+BridgeHubRococo
+BridgeHubWococo
 CLI/MS
 Chain1
 Chain2

primitives/chain-bridge-hub-rococo/Cargo.toml

@@ -0,0 +1,37 @@
+[package]
+name = "bp-bridge-hub-rococo"
+description = "Primitives of BridgeHubRococo parachain runtime."
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2021"
+license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
+
+[dependencies]
+smallvec = "1.10.0"
+
+# Bridge Dependencies
+
+bp-polkadot-core = { path = "../../primitives/polkadot-core", default-features = false }
+bp-runtime = { path = "../../primitives/runtime", default-features = false }
+bp-messages = { path = "../../primitives/messages", default-features = false }
+
+# Substrate Based Dependencies
+
+frame-support = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-api = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+
+# Polkadot Dependencies
+polkadot-runtime-constants = { git = "https://github.com/paritytech/polkadot", default-features = false, branch = "master" }
+
+[features]
+default = ["std"]
+std = [
+	"bp-polkadot-core/std",
+	"bp-messages/std",
+	"bp-runtime/std",
+	"frame-support/std",
+	"sp-api/std",
+	"sp-std/std",
+	"polkadot-runtime-constants/std",
+]

primitives/chain-bridge-hub-rococo/src/lib.rs

@@ -0,0 +1,75 @@
+// 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/>.
+
+//! Module with configuration which reflects BridgeHubRococo runtime setup (AccountId, Headers,
+//! Hashes...)
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use bp_messages::*;
+pub use bp_polkadot_core::*;
+use bp_runtime::{decl_bridge_finality_runtime_apis, decl_bridge_messages_runtime_apis};
+use frame_support::{
+	parameter_types,
+	sp_runtime::{FixedU128, MultiAddress, MultiSigner},
+	weights::{
+		constants::ExtrinsicBaseWeight, WeightToFeeCoefficient, WeightToFeeCoefficients,
+		WeightToFeePolynomial,
+	},
+	Parameter,
+};
+use sp_std::prelude::*;
+
+pub type BridgeHubRococo = PolkadotLike;
+
+/// [`WeightToFee`] should reflect cumulus/bridge-hub-rococo-runtime [`WeightToFee`]
+pub struct WeightToFee;
+impl WeightToFeePolynomial for WeightToFee {
+	type Balance = Balance;
+	fn polynomial() -> WeightToFeeCoefficients<Self::Balance> {
+		pub const CENTS: Balance = polkadot_runtime_constants::currency::CENTS;
+
+		// in Rococo, extrinsic base weight (smallest non-zero weight) is mapped to 1/10 CENT:
+		// in BridgeHub, we map to 1/10 of that, or 1/100 CENT
+		let p = CENTS;
+		let q = 100 * Balance::from(ExtrinsicBaseWeight::get().ref_time());
+		smallvec::smallvec![WeightToFeeCoefficient {
+			degree: 1,
+			negative: false,
+			coeff_frac: Perbill::from_rational(p % q, q),
+			coeff_integer: p / q,
+		}]
+	}
+}
+
+/// Public key of the chain account that may be used to verify signatures.
+pub type AccountSigner = MultiSigner;
+
+/// The address format for describing accounts.
+pub type Address = MultiAddress<AccountId, ()>;
+
+/// Identifier of BridgeHubRococo in the Rococo relay chain.
+pub const BRIDGE_HUB_ROCOCO_PARACHAIN_ID: u32 = 1013;
+
+/// Name of the With-BridgeHubRococo messages pallet instance that is deployed at bridged chains.
+pub const WITH_BRIDGE_HUB_ROCOCO_MESSAGES_PALLET_NAME: &str = "BridgeRococoMessages";
+
+parameter_types! {
+	pub const SS58Prefix: u16 = 42;
+}
+
+decl_bridge_finality_runtime_apis!(bridge_hub_rococo);
+decl_bridge_messages_runtime_apis!(bridge_hub_rococo);

primitives/chain-bridge-hub-wococo/Cargo.toml

@@ -0,0 +1,32 @@
+[package]
+name = "bp-bridge-hub-wococo"
+description = "Primitives of BridgeHubWococo parachain runtime."
+version = "0.1.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2021"
+license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
+
+[dependencies]
+
+# Bridge Dependencies
+
+bp-bridge-hub-rococo = { path = "../chain-bridge-hub-rococo", default-features = false }
+bp-runtime = { path = "../../primitives/runtime", default-features = false }
+bp-messages = { path = "../../primitives/messages", default-features = false }
+
+# Substrate Based Dependencies
+
+frame-support = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-api = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+sp-std = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+
+[features]
+default = ["std"]
+std = [
+	"bp-runtime/std",
+	"bp-messages/std",
+	"frame-support/std",
+	"sp-api/std",
+	"sp-std/std",
+	"bp-bridge-hub-rococo/std",
+]

primitives/chain-bridge-hub-wococo/src/lib.rs

@@ -0,0 +1,49 @@
+// 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/>.
+
+//! Module with configuration which reflects BridgeHubWococo runtime setup
+//! (AccountId, Headers, Hashes...)
+//!
+//! but actually this is just reexported BridgeHubRococo stuff, because they are supposed to be
+//! identical, at least uses the same parachain runtime
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+// Re-export only what is really needed
+pub use bp_bridge_hub_rococo::{
+	account_info_storage_key, AccountId, AccountPublic, AccountSigner, Address, Balance,
+	BlockNumber, Hash, Hashing, Header, Nonce, SS58Prefix, Signature, SignedBlock,
+	SignedExtensions, UncheckedExtrinsic, WeightToFee, ADDITIONAL_MESSAGE_BYTE_DELIVERY_WEIGHT,
+	DEFAULT_MESSAGE_DELIVERY_TX_WEIGHT, EXTRA_STORAGE_PROOF_SIZE,
+	MAX_SINGLE_MESSAGE_DELIVERY_CONFIRMATION_TX_WEIGHT,
+	MAX_UNCONFIRMED_MESSAGES_IN_CONFIRMATION_TX, MAX_UNREWARDED_RELAYERS_IN_CONFIRMATION_TX,
+	PAY_INBOUND_DISPATCH_FEE_WEIGHT, TX_EXTRA_BYTES,
+};
+use bp_messages::*;
+use bp_runtime::{decl_bridge_finality_runtime_apis, decl_bridge_messages_runtime_apis};
+use frame_support::{sp_runtime::FixedU128, Parameter};
+use sp_std::prelude::*;
+
+pub type BridgeHubWococo = bp_bridge_hub_rococo::BridgeHubRococo;
+
+/// Identifier of BridgeHubWococo in the Wococo relay chain.
+pub const BRIDGE_HUB_WOCOCO_PARACHAIN_ID: u32 = 1013;
+
+/// Name of the With-BridgeHubWococo messages pallet instance that is deployed at bridged chains.
+pub const WITH_BRIDGE_HUB_WOCOCO_MESSAGES_PALLET_NAME: &str = "BridgeWococoMessages";
+
+decl_bridge_finality_runtime_apis!(bridge_hub_wococo);
+decl_bridge_messages_runtime_apis!(bridge_hub_wococo);

primitives/chain-rococo/Cargo.toml

@@ -14,11 +14,13 @@ bp-runtime = { path = "../runtime", default-features = false }
 
 # Substrate Based Dependencies
 sp-api = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
+frame-support = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
 
 [features]
 default = ["std"]
 std = [
 	"bp-polkadot-core/std",
 	"bp-runtime/std",
 	"sp-api/std",
+	"frame-support/std",
 ]

primitives/chain-rococo/src/lib.rs

@@ -20,11 +20,34 @@
 
 pub use bp_polkadot_core::*;
 use bp_runtime::decl_bridge_finality_runtime_apis;
+use frame_support::parameter_types;
 
 /// Rococo Chain
 pub type Rococo = PolkadotLike;
 
+parameter_types! {
+	pub const SS58Prefix: u8 = 42;
+}
+
+/// Name of the parachains pallet in the Rococo runtime.
+pub const PARAS_PALLET_NAME: &str = "Paras";
+
 /// Name of the With-Rococo GRANDPA pallet instance that is deployed at bridged chains.
 pub const WITH_ROCOCO_GRANDPA_PALLET_NAME: &str = "BridgeRococoGrandpa";
 
+/// Maximal SCALE-encoded header size (in bytes) at Rococo.
+///
+/// Let's assume that the largest header is header that enacts new authorities set with
+/// `MAX_AUTHORITES_COUNT`. Every authority means 32-byte key and 8-byte weight. Let's also have
+/// some fixed reserve for other things (digest, block hash and number, ...) as well.
+pub const MAX_HEADER_SIZE: u32 = 4096 + MAX_AUTHORITIES_COUNT * 40;
+
+/// Maximal SCALE-encoded size of parachains headers that are stored at Rococo `Paras` pallet.
+pub const MAX_NESTED_PARACHAIN_HEAD_SIZE: u32 = MAX_HEADER_SIZE;
+
+/// Maximal number of GRANDPA authorities at Rococo.
+///
+/// Corresponds to the `MaxAuthorities` constant value from the Rococo runtime configuration.
+pub const MAX_AUTHORITIES_COUNT: u32 = 100_000;
+
 decl_bridge_finality_runtime_apis!(rococo);

primitives/chain-wococo/Cargo.toml

@@ -11,6 +11,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 # Bridge Dependencies
 bp-polkadot-core = { path = "../polkadot-core", default-features = false }
 bp-runtime = { path = "../runtime", default-features = false }
+bp-rococo = { path = "../chain-rococo", default-features = false }
 
 # Substrate Based Dependencies
 sp-api = { git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
@@ -20,5 +21,6 @@ default = ["std"]
 std = [
 	"bp-polkadot-core/std",
 	"bp-runtime/std",
+	"bp-rococo/std",
 	"sp-api/std",
 ]