Rococo/Wococo bridge hub relay integration (#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>

bridges/relays/bin-substrate/src/chains/bridge_hub_rococo_messages_to_bridge_hub_wococo.rs

@@ -0,0 +1,78 @@
+// Copyright 2022 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/>.
+
+//! BridgeHubRococo-to-BridgeHubWococo messages sync entrypoint.
+
+use crate::cli::bridge::{CliBridgeBase, MessagesCliBridge};
+use bp_messages::Weight;
+use messages_relay::relay_strategy::MixStrategy;
+use relay_bridge_hub_rococo_client::BridgeHubRococo;
+use relay_bridge_hub_wococo_client::BridgeHubWococo;
+use substrate_relay_helper::messages_lane::SubstrateMessageLane;
+
+pub struct BridgeHubRococoToBridgeHubWococoMessagesCliBridge {}
+
+impl CliBridgeBase for BridgeHubRococoToBridgeHubWococoMessagesCliBridge {
+	type Source = BridgeHubRococo;
+	type Target = BridgeHubWococo;
+}
+
+impl MessagesCliBridge for BridgeHubRococoToBridgeHubWococoMessagesCliBridge {
+	const ESTIMATE_MESSAGE_FEE_METHOD: &'static str =
+		"TODO: not needed now, used for send_message and estimate_fee CLI";
+	type MessagesLane = BridgeHubRococoMessagesToBridgeHubWococoMessageLane;
+}
+
+substrate_relay_helper::generate_mocked_receive_message_proof_call_builder!(
+	BridgeHubRococoMessagesToBridgeHubWococoMessageLane,
+	BridgeHubRococoMessagesToBridgeHubWococoMessageLaneReceiveMessagesProofCallBuilder,
+	relay_bridge_hub_wococo_client::runtime::Call::BridgeRococoMessages,
+	relay_bridge_hub_wococo_client::runtime::BridgeRococoMessagesCall::receive_messages_proof
+);
+
+substrate_relay_helper::generate_mocked_receive_message_delivery_proof_call_builder!(
+	BridgeHubRococoMessagesToBridgeHubWococoMessageLane,
+	BridgeHubRococoMessagesToBridgeHubWococoMessageLaneReceiveMessagesDeliveryProofCallBuilder,
+	relay_bridge_hub_rococo_client::runtime::Call::BridgeWococoMessages,
+	relay_bridge_hub_rococo_client::runtime::BridgeWococoMessagesCall::receive_messages_delivery_proof
+);
+
+/// Description of BridgeHubRococo -> BridgeHubWococo messages bridge.
+#[derive(Clone, Debug)]
+pub struct BridgeHubRococoMessagesToBridgeHubWococoMessageLane;
+
+impl SubstrateMessageLane for BridgeHubRococoMessagesToBridgeHubWococoMessageLane {
+	const SOURCE_TO_TARGET_CONVERSION_RATE_PARAMETER_NAME: Option<&'static str> = None;
+	const TARGET_TO_SOURCE_CONVERSION_RATE_PARAMETER_NAME: Option<&'static str> = None;
+
+	const SOURCE_FEE_MULTIPLIER_PARAMETER_NAME: Option<&'static str> = None;
+	const TARGET_FEE_MULTIPLIER_PARAMETER_NAME: Option<&'static str> = None;
+
+	const AT_SOURCE_TRANSACTION_PAYMENT_PALLET_NAME: Option<&'static str> = None;
+	const AT_TARGET_TRANSACTION_PAYMENT_PALLET_NAME: Option<&'static str> = None;
+
+	type SourceChain = BridgeHubRococo;
+	type TargetChain = BridgeHubWococo;
+
+	type ReceiveMessagesProofCallBuilder =
+		BridgeHubRococoMessagesToBridgeHubWococoMessageLaneReceiveMessagesProofCallBuilder;
+	type ReceiveMessagesDeliveryProofCallBuilder =
+		BridgeHubRococoMessagesToBridgeHubWococoMessageLaneReceiveMessagesDeliveryProofCallBuilder;
+
+	type TargetToSourceChainConversionRateUpdateBuilder = ();
+
+	type RelayStrategy = MixStrategy;
+}

bridges/relays/bin-substrate/src/chains/bridge_hub_wococo_messages_to_bridge_hub_rococo.rs

@@ -0,0 +1,78 @@
+// Copyright 2022 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/>.
+
+//! BridgeHubWococo-to-BridgeHubRococo messages sync entrypoint.
+
+use crate::cli::bridge::{CliBridgeBase, MessagesCliBridge};
+use bp_messages::Weight;
+use messages_relay::relay_strategy::MixStrategy;
+use relay_bridge_hub_rococo_client::BridgeHubRococo;
+use relay_bridge_hub_wococo_client::BridgeHubWococo;
+use substrate_relay_helper::messages_lane::SubstrateMessageLane;
+
+pub struct BridgeHubWococoToBridgeHubRococoMessagesCliBridge {}
+
+impl CliBridgeBase for BridgeHubWococoToBridgeHubRococoMessagesCliBridge {
+	type Source = BridgeHubWococo;
+	type Target = BridgeHubRococo;
+}
+
+impl MessagesCliBridge for BridgeHubWococoToBridgeHubRococoMessagesCliBridge {
+	const ESTIMATE_MESSAGE_FEE_METHOD: &'static str =
+		"TODO: not needed now, used for send_message and estimate_fee CLI";
+	type MessagesLane = BridgeHubWococoMessagesToBridgeHubRococoMessageLane;
+}
+
+substrate_relay_helper::generate_mocked_receive_message_proof_call_builder!(
+	BridgeHubWococoMessagesToBridgeHubRococoMessageLane,
+	BridgeHubWococoMessagesToBridgeHubRococoMessageLaneReceiveMessagesProofCallBuilder,
+	relay_bridge_hub_rococo_client::runtime::Call::BridgeWococoMessages,
+	relay_bridge_hub_rococo_client::runtime::BridgeWococoMessagesCall::receive_messages_proof
+);
+
+substrate_relay_helper::generate_mocked_receive_message_delivery_proof_call_builder!(
+	BridgeHubWococoMessagesToBridgeHubRococoMessageLane,
+	BridgeHubWococoMessagesToBridgeHubRococoMessageLaneReceiveMessagesDeliveryProofCallBuilder,
+	relay_bridge_hub_wococo_client::runtime::Call::BridgeRococoMessages,
+	relay_bridge_hub_wococo_client::runtime::BridgeRococoMessagesCall::receive_messages_delivery_proof
+);
+
+/// Description of BridgeHubWococo -> BridgeHubRococo messages bridge.
+#[derive(Clone, Debug)]
+pub struct BridgeHubWococoMessagesToBridgeHubRococoMessageLane;
+
+impl SubstrateMessageLane for BridgeHubWococoMessagesToBridgeHubRococoMessageLane {
+	const SOURCE_TO_TARGET_CONVERSION_RATE_PARAMETER_NAME: Option<&'static str> = None;
+	const TARGET_TO_SOURCE_CONVERSION_RATE_PARAMETER_NAME: Option<&'static str> = None;
+
+	const SOURCE_FEE_MULTIPLIER_PARAMETER_NAME: Option<&'static str> = None;
+	const TARGET_FEE_MULTIPLIER_PARAMETER_NAME: Option<&'static str> = None;
+
+	const AT_SOURCE_TRANSACTION_PAYMENT_PALLET_NAME: Option<&'static str> = None;
+	const AT_TARGET_TRANSACTION_PAYMENT_PALLET_NAME: Option<&'static str> = None;
+
+	type SourceChain = BridgeHubWococo;
+	type TargetChain = BridgeHubRococo;
+
+	type ReceiveMessagesProofCallBuilder =
+		BridgeHubWococoMessagesToBridgeHubRococoMessageLaneReceiveMessagesProofCallBuilder;
+	type ReceiveMessagesDeliveryProofCallBuilder =
+		BridgeHubWococoMessagesToBridgeHubRococoMessageLaneReceiveMessagesDeliveryProofCallBuilder;
+
+	type TargetToSourceChainConversionRateUpdateBuilder = ();
+
+	type RelayStrategy = MixStrategy;
+}

bridges/relays/bin-substrate/src/chains/mod.rs

@@ -16,6 +16,8 @@
 
 //! Chain-specific relayer configuration.
 
+pub mod bridge_hub_rococo_messages_to_bridge_hub_wococo;
+pub mod bridge_hub_wococo_messages_to_bridge_hub_rococo;
 pub mod millau_headers_to_rialto;
 pub mod millau_headers_to_rialto_parachain;
 pub mod millau_messages_to_rialto;
@@ -24,14 +26,20 @@ pub mod rialto_headers_to_millau;
 pub mod rialto_messages_to_millau;
 pub mod rialto_parachain_messages_to_millau;
 pub mod rialto_parachains_to_millau;
+pub mod rococo_headers_to_bridge_hub_wococo;
+pub mod rococo_parachains_to_bridge_hub_wococo;
 pub mod westend_headers_to_millau;
 pub mod westend_parachains_to_millau;
+pub mod wococo_headers_to_bridge_hub_rococo;
+pub mod wococo_parachains_to_bridge_hub_rococo;
 
 mod millau;
 mod rialto;
 mod rialto_parachain;
+mod rococo;
 mod statemine;
 mod westend;
+mod wococo;
 
 #[cfg(test)]
 mod tests {

bridges/relays/bin-substrate/src/chains/rococo.rs

@@ -0,0 +1,42 @@
+// Copyright 2022 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/>.
+
+//! Rococo + Rococo parachains specification for CLI.
+
+use crate::cli::CliChain;
+use relay_bridge_hub_rococo_client::BridgeHubRococo;
+use relay_rococo_client::Rococo;
+use sp_version::RuntimeVersion;
+
+impl CliChain for Rococo {
+	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
+
+	type KeyPair = sp_core::sr25519::Pair;
+
+	fn ss58_format() -> u16 {
+		bp_rococo::SS58Prefix::get() as u16
+	}
+}
+
+impl CliChain for BridgeHubRococo {
+	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
+
+	type KeyPair = sp_core::sr25519::Pair;
+
+	fn ss58_format() -> u16 {
+		relay_bridge_hub_rococo_client::runtime::SS58Prefix::get()
+	}
+}

bridges/relays/bin-substrate/src/chains/rococo_headers_to_bridge_hub_wococo.rs

@@ -0,0 +1,53 @@
+// Copyright 2022 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/>.
+
+//! Rococo-to-Wococo bridge hubs headers sync entrypoint.
+
+use crate::cli::bridge::{CliBridgeBase, RelayToRelayHeadersCliBridge};
+use substrate_relay_helper::finality::{
+	engine::Grandpa as GrandpaFinalityEngine, SubstrateFinalitySyncPipeline,
+};
+
+/// Description of Rococo -> Wococo finalized headers bridge.
+#[derive(Clone, Debug)]
+pub struct RococoFinalityToBridgeHubWococo;
+
+substrate_relay_helper::generate_mocked_submit_finality_proof_call_builder!(
+	RococoFinalityToBridgeHubWococo,
+	RococoFinalityToBridgeHubWococoCallBuilder,
+	relay_bridge_hub_wococo_client::runtime::Call::BridgeRococoGrandpa,
+	relay_bridge_hub_wococo_client::runtime::BridgeGrandpaRococoCall::submit_finality_proof
+);
+
+impl SubstrateFinalitySyncPipeline for RococoFinalityToBridgeHubWococo {
+	type SourceChain = relay_rococo_client::Rococo;
+	type TargetChain = relay_bridge_hub_wococo_client::BridgeHubWococo;
+
+	type FinalityEngine = GrandpaFinalityEngine<Self::SourceChain>;
+	type SubmitFinalityProofCallBuilder = RococoFinalityToBridgeHubWococoCallBuilder;
+}
+
+/// `Rococo` to BridgeHub `Wococo` bridge definition.
+pub struct RococoToBridgeHubWococoCliBridge {}
+
+impl CliBridgeBase for RococoToBridgeHubWococoCliBridge {
+	type Source = relay_rococo_client::Rococo;
+	type Target = relay_bridge_hub_wococo_client::BridgeHubWococo;
+}
+
+impl RelayToRelayHeadersCliBridge for RococoToBridgeHubWococoCliBridge {
+	type Finality = RococoFinalityToBridgeHubWococo;
+}

bridges/relays/bin-substrate/src/chains/rococo_parachains_to_bridge_hub_wococo.rs

@@ -0,0 +1,78 @@
+// 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/>.
+
+//! Wococo-to-Rococo parachains sync entrypoint.
+
+use crate::cli::bridge::{CliBridgeBase, ParachainToRelayHeadersCliBridge};
+use bp_polkadot_core::parachains::{ParaHash, ParaHeadsProof, ParaId};
+use parachains_relay::ParachainsPipeline;
+use relay_substrate_client::{CallOf, HeaderIdOf};
+use substrate_relay_helper::parachains::{
+	SubmitParachainHeadsCallBuilder, SubstrateParachainsPipeline,
+};
+
+/// BridgeHub-to-BridgeHub parachain sync description.
+#[derive(Clone, Debug)]
+pub struct BridgeHubRococoToBridgeHubWococo;
+
+impl ParachainsPipeline for BridgeHubRococoToBridgeHubWococo {
+	type SourceChain = relay_rococo_client::Rococo;
+	type TargetChain = relay_bridge_hub_wococo_client::BridgeHubWococo;
+}
+
+impl SubstrateParachainsPipeline for BridgeHubRococoToBridgeHubWococo {
+	type SourceParachain = relay_bridge_hub_rococo_client::BridgeHubRococo;
+	type SourceRelayChain = relay_rococo_client::Rococo;
+	type TargetChain = relay_bridge_hub_wococo_client::BridgeHubWococo;
+
+	type SubmitParachainHeadsCallBuilder = BridgeHubRococoToBridgeHubWococoCallBuilder;
+
+	const SOURCE_PARACHAIN_PARA_ID: u32 = bp_bridge_hub_rococo::BRIDGE_HUB_ROCOCO_PARACHAIN_ID;
+}
+
+pub struct BridgeHubRococoToBridgeHubWococoCallBuilder;
+impl SubmitParachainHeadsCallBuilder<BridgeHubRococoToBridgeHubWococo>
+	for BridgeHubRococoToBridgeHubWococoCallBuilder
+{
+	fn build_submit_parachain_heads_call(
+		at_relay_block: HeaderIdOf<relay_rococo_client::Rococo>,
+		parachains: Vec<(ParaId, ParaHash)>,
+		parachain_heads_proof: ParaHeadsProof,
+	) -> CallOf<relay_bridge_hub_wococo_client::BridgeHubWococo> {
+		relay_bridge_hub_wococo_client::runtime::Call::BridgeRococoParachain(
+			relay_bridge_hub_wococo_client::runtime::BridgeParachainCall::submit_parachain_heads(
+				(at_relay_block.0, at_relay_block.1),
+				parachains,
+				parachain_heads_proof,
+			),
+		)
+	}
+}
+
+/// `BridgeHubParachain` to `BridgeHubParachain` bridge definition.
+pub struct BridgeHubRococoToBridgeHubWococoCliBridge {}
+
+impl ParachainToRelayHeadersCliBridge for BridgeHubRococoToBridgeHubWococoCliBridge {
+	type SourceRelay = relay_rococo_client::Rococo;
+	type ParachainFinality = BridgeHubRococoToBridgeHubWococo;
+	type RelayFinality =
+		crate::chains::rococo_headers_to_bridge_hub_wococo::RococoFinalityToBridgeHubWococo;
+}
+
+impl CliBridgeBase for BridgeHubRococoToBridgeHubWococoCliBridge {
+	type Source = relay_bridge_hub_rococo_client::BridgeHubRococo;
+	type Target = relay_bridge_hub_wococo_client::BridgeHubWococo;
+}

bridges/relays/bin-substrate/src/chains/wococo.rs

@@ -0,0 +1,42 @@
+// Copyright 2022 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/>.
+
+//! Wococo + Wococo parachains specification for CLI.
+
+use crate::cli::CliChain;
+use relay_bridge_hub_wococo_client::BridgeHubWococo;
+use relay_wococo_client::Wococo;
+use sp_version::RuntimeVersion;
+
+impl CliChain for Wococo {
+	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
+
+	type KeyPair = sp_core::sr25519::Pair;
+
+	fn ss58_format() -> u16 {
+		bp_wococo::SS58Prefix::get() as u16
+	}
+}
+
+impl CliChain for BridgeHubWococo {
+	const RUNTIME_VERSION: Option<RuntimeVersion> = None;
+
+	type KeyPair = sp_core::sr25519::Pair;
+
+	fn ss58_format() -> u16 {
+		relay_bridge_hub_wococo_client::runtime::SS58Prefix::get()
+	}
+}

bridges/relays/bin-substrate/src/chains/wococo_headers_to_bridge_hub_rococo.rs

@@ -0,0 +1,53 @@
+// Copyright 2022 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/>.
+
+//! Wococo-to-Rococo bridge hubs headers sync entrypoint.
+
+use crate::cli::bridge::{CliBridgeBase, RelayToRelayHeadersCliBridge};
+use substrate_relay_helper::finality::{
+	engine::Grandpa as GrandpaFinalityEngine, SubstrateFinalitySyncPipeline,
+};
+
+/// Description of Wococo -> Rococo finalized headers bridge.
+#[derive(Clone, Debug)]
+pub struct WococoFinalityToBridgeHubRococo;
+
+substrate_relay_helper::generate_mocked_submit_finality_proof_call_builder!(
+	WococoFinalityToBridgeHubRococo,
+	WococoFinalityToBridgeHubRococoCallBuilder,
+	relay_bridge_hub_rococo_client::runtime::Call::BridgeWococoGrandpa,
+	relay_bridge_hub_rococo_client::runtime::BridgeWococoGrandpaCall::submit_finality_proof
+);
+
+impl SubstrateFinalitySyncPipeline for WococoFinalityToBridgeHubRococo {
+	type SourceChain = relay_wococo_client::Wococo;
+	type TargetChain = relay_bridge_hub_rococo_client::BridgeHubRococo;
+
+	type FinalityEngine = GrandpaFinalityEngine<Self::SourceChain>;
+	type SubmitFinalityProofCallBuilder = WococoFinalityToBridgeHubRococoCallBuilder;
+}
+
+/// `Wococo` to BridgeHub `Rococo` bridge definition.
+pub struct WococoToBridgeHubRococoCliBridge {}
+
+impl CliBridgeBase for WococoToBridgeHubRococoCliBridge {
+	type Source = relay_wococo_client::Wococo;
+	type Target = relay_bridge_hub_rococo_client::BridgeHubRococo;
+}
+
+impl RelayToRelayHeadersCliBridge for WococoToBridgeHubRococoCliBridge {
+	type Finality = WococoFinalityToBridgeHubRococo;
+}

bridges/relays/bin-substrate/src/chains/wococo_parachains_to_bridge_hub_rococo.rs

@@ -0,0 +1,78 @@
+// 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/>.
+
+//! Rococo-to-Wococo parachains sync entrypoint.
+
+use crate::cli::bridge::{CliBridgeBase, ParachainToRelayHeadersCliBridge};
+use bp_polkadot_core::parachains::{ParaHash, ParaHeadsProof, ParaId};
+use parachains_relay::ParachainsPipeline;
+use relay_substrate_client::{CallOf, HeaderIdOf};
+use substrate_relay_helper::parachains::{
+	SubmitParachainHeadsCallBuilder, SubstrateParachainsPipeline,
+};
+
+/// BridgeHub-to-BridgeHub parachain sync description.
+#[derive(Clone, Debug)]
+pub struct BridgeHubWococoToBridgeHubRococo;
+
+impl ParachainsPipeline for BridgeHubWococoToBridgeHubRococo {
+	type SourceChain = relay_wococo_client::Wococo;
+	type TargetChain = relay_bridge_hub_rococo_client::BridgeHubRococo;
+}
+
+impl SubstrateParachainsPipeline for BridgeHubWococoToBridgeHubRococo {
+	type SourceParachain = relay_bridge_hub_wococo_client::BridgeHubWococo;
+	type SourceRelayChain = relay_wococo_client::Wococo;
+	type TargetChain = relay_bridge_hub_rococo_client::BridgeHubRococo;
+
+	type SubmitParachainHeadsCallBuilder = BridgeHubWococoToBridgeHubRococoCallBuilder;
+
+	const SOURCE_PARACHAIN_PARA_ID: u32 = bp_bridge_hub_wococo::BRIDGE_HUB_WOCOCO_PARACHAIN_ID;
+}
+
+pub struct BridgeHubWococoToBridgeHubRococoCallBuilder;
+impl SubmitParachainHeadsCallBuilder<BridgeHubWococoToBridgeHubRococo>
+	for BridgeHubWococoToBridgeHubRococoCallBuilder
+{
+	fn build_submit_parachain_heads_call(
+		at_relay_block: HeaderIdOf<relay_wococo_client::Wococo>,
+		parachains: Vec<(ParaId, ParaHash)>,
+		parachain_heads_proof: ParaHeadsProof,
+	) -> CallOf<relay_bridge_hub_rococo_client::BridgeHubRococo> {
+		relay_bridge_hub_rococo_client::runtime::Call::BridgeWococoParachain(
+			relay_bridge_hub_rococo_client::runtime::BridgeParachainCall::submit_parachain_heads(
+				(at_relay_block.0, at_relay_block.1),
+				parachains,
+				parachain_heads_proof,
+			),
+		)
+	}
+}
+
+/// `BridgeHubParachain` to `BridgeHubParachain` bridge definition.
+pub struct BridgeHubWococoToBridgeHubRococoCliBridge {}
+
+impl ParachainToRelayHeadersCliBridge for BridgeHubWococoToBridgeHubRococoCliBridge {
+	type SourceRelay = relay_wococo_client::Wococo;
+	type ParachainFinality = BridgeHubWococoToBridgeHubRococo;
+	type RelayFinality =
+		crate::chains::wococo_headers_to_bridge_hub_rococo::WococoFinalityToBridgeHubRococo;
+}
+
+impl CliBridgeBase for BridgeHubWococoToBridgeHubRococoCliBridge {
+	type Source = relay_bridge_hub_wococo_client::BridgeHubWococo;
+	type Target = relay_bridge_hub_rococo_client::BridgeHubRococo;
+}