Reinitialize bridge relay subcommand (paritytech#1331)

* reinitialize bridge subcommand

* PolkadotToKusama in reinit-bridge

bridges/relays/bin-substrate/Cargo.toml

@@ -31,15 +31,16 @@ bp-polkadot = { path = "../../primitives/chain-polkadot" }
 bp-rialto = { path = "../../primitives/chain-rialto" }
 bp-rialto-parachain = { path = "../../primitives/chain-rialto-parachain" }
 bp-rococo = { path = "../../primitives/chain-rococo" }
-bp-token-swap = { path = "../../primitives/token-swap" }
-bp-wococo = { path = "../../primitives/chain-wococo" }
 bp-runtime = { path = "../../primitives/runtime" }
+bp-token-swap = { path = "../../primitives/token-swap" }
 bp-westend = { path = "../../primitives/chain-westend" }
+bp-wococo = { path = "../../primitives/chain-wococo" }
 bridge-runtime-common = { path = "../../bin/runtime-common" }
 finality-relay = { path = "../finality" }
 messages-relay = { path = "../messages" }
 millau-runtime = { path = "../../bin/millau/runtime" }
 pallet-bridge-dispatch = { path = "../../modules/dispatch" }
+pallet-bridge-grandpa = { path = "../../modules/grandpa" }
 pallet-bridge-messages = { path = "../../modules/messages" }
 pallet-bridge-token-swap = { path = "../../modules/token-swap" }
 relay-kusama-client = { path = "../client-kusama" }
@@ -73,6 +74,7 @@ polkadot-runtime-common = { git = "https://github.com/paritytech/polkadot", bran
 polkadot-runtime-parachains = { git = "https://github.com/paritytech/polkadot", branch = "master" }
 
 [dev-dependencies]
+bp-test-utils = { path = "../../primitives/test-utils" }
 hex-literal = "0.3"
 pallet-bridge-grandpa = { path = "../../modules/grandpa" }
 sp-keyring = { git = "https://github.com/paritytech/substrate", branch = "master" }

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

@@ -35,6 +35,7 @@ pub(crate) mod send_message;
 mod derive_account;
 mod init_bridge;
 mod register_parachain;
+mod reinit_bridge;
 mod relay_headers;
 mod relay_headers_and_messages;
 mod relay_messages;
@@ -71,6 +72,11 @@ pub enum Command {
 	///
 	/// Sends initialization transaction to bootstrap the bridge with current finalized block data.
 	InitBridge(init_bridge::InitBridge),
+	/// Reinitialize on-chain bridge pallet with current header data.
+	///
+	/// Sends all missing mandatory headers to bootstrap the bridge with current finalized block
+	/// data.
+	ReinitBridge(reinit_bridge::ReinitBridge),
 	/// Send custom message over the bridge.
 	///
 	/// Allows interacting with the bridge by sending messages over `Messages` component.
@@ -126,6 +132,7 @@ impl Command {
 			Self::RelayMessages(arg) => arg.run().await?,
 			Self::RelayHeadersAndMessages(arg) => arg.run().await?,
 			Self::InitBridge(arg) => arg.run().await?,
+			Self::ReinitBridge(arg) => arg.run().await?,
 			Self::SendMessage(arg) => arg.run().await?,
 			Self::EncodeCall(arg) => arg.run().await?,
 			Self::EncodeMessage(arg) => arg.run().await?,