Add support for Grandpa warp sync (#2301)

* Add support for Grandpa warp sync

* Don't pull the warp sync crate if not full-node

polkadot/node/service/Cargo.toml

@@ -16,6 +16,7 @@ sc-client-db = { git = "https://github.com/paritytech/substrate", branch = "mast
 sc-consensus = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sc-consensus-slots = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sc-executor = { git = "https://github.com/paritytech/substrate", branch = "master" }
+sc-finality-grandpa-warp-sync = { git = "https://github.com/paritytech/substrate", branch = "master", optional = true }
 sc-network = { git = "https://github.com/paritytech/substrate", branch = "master" }
 sc-transaction-pool = { git = "https://github.com/paritytech/substrate", branch = "master" }
 service = { package = "sc-service", git = "https://github.com/paritytech/substrate", branch = "master", default-features = false }
@@ -103,6 +104,7 @@ default = ["db", "full-node"]
 db = ["service/db"]
 full-node = [
 	"polkadot-node-core-av-store",
+	"sc-finality-grandpa-warp-sync"
 ]
 
 runtime-benchmarks = [

polkadot/node/service/src/lib.rs

@@ -589,6 +589,10 @@ pub fn new_full<RuntimeApi, Executor>(
 	fn adjust_yamux(_: &mut sc_network::config::NetworkConfiguration) {}
 	adjust_yamux(&mut config.network);
 
+	config.network.request_response_protocols.push(sc_finality_grandpa_warp_sync::request_response_config_for_chain(
+		&config, task_manager.spawn_handle(), backend.clone(),
+	));
+
 	let (network, network_status_sinks, system_rpc_tx, network_starter) =
 		service::build_network(service::BuildNetworkParams {
 			config: &config,