Revert "revert enabling authority discovery by default (#1532)"

This reverts commit 671cc75c.

The authority discovery module was initially enabled by default on
validator and sentry nodes with commit bc6e1e77. This change was later on
reverted in 671cc75c. With this commit the authority discovery module is
again enabled by default.

cli/src/cli.rs

@@ -83,7 +83,10 @@ pub struct RunCmd {
 	#[structopt(long = "force-rococo")]
 	pub force_rococo: bool,
 
-	/// Enable the authority discovery module on validator or sentry nodes.
+	/// Disable the authority discovery module on validator or sentry nodes.
+	///
+	/// Enabled by default on validator and sentry nodes. Always disabled on non
+	/// validator or sentry nodes.
 	///
 	/// When enabled:
 	///
@@ -94,8 +97,8 @@ pub struct RunCmd {
 	/// (2) As a validator or sentry node: Discover addresses of validators or
 	///     addresses of their sentry nodes and maintain a permanent connection
 	///     to a subset.
-	#[structopt(long = "enable-authority-discovery")]
-	pub authority_discovery_enabled: bool,
+	#[structopt(long = "disable-authority-discovery")]
+	pub authority_discovery_disabled: bool,
 
 	/// Setup a GRANDPA scheduled voting pause.
 	///

cli/src/command.rs

@@ -126,7 +126,7 @@ pub fn run() -> Result<()> {
 
 			set_default_ss58_version(chain_spec);
 
-			let authority_discovery_enabled = cli.run.authority_discovery_enabled;
+			let authority_discovery_disabled = cli.run.authority_discovery_disabled;
 			let grandpa_pause = if cli.run.grandpa_pause.is_empty() {
 				None
 			} else {
@@ -148,7 +148,7 @@ pub fn run() -> Result<()> {
 					Role::Light => service::build_light(config).map(|(task_manager, _)| task_manager),
 					_ => service::build_full(
 						config,
-						authority_discovery_enabled,
+						authority_discovery_disabled,
 						grandpa_pause,
 					).map(|full| full.task_manager),
 				}
@@ -164,7 +164,7 @@ pub fn run() -> Result<()> {
 
 			set_default_ss58_version(chain_spec);
 
-			let authority_discovery_enabled = cli.run.authority_discovery_enabled;
+			let authority_discovery_disabled = cli.run.authority_discovery_disabled;
 			let grandpa_pause = if cli.run.grandpa_pause.is_empty() {
 				None
 			} else {
@@ -188,7 +188,7 @@ pub fn run() -> Result<()> {
 					network_status_sinks,
 					..
 				} = service::build_full(
-					config, authority_discovery_enabled, grandpa_pause,
+					config, authority_discovery_disabled, grandpa_pause,
 				)?;
 				let client = Arc::new(client);
 

node/service/src/lib.rs

@@ -328,7 +328,7 @@ impl<C> NewFull<C> {
 #[cfg(feature = "full-node")]
 pub fn new_full<RuntimeApi, Executor>(
 	mut config: Configuration,
-	authority_discovery_enabled: bool,
+	authority_discovery_disabled: bool,
 	grandpa_pause: Option<(u32, u32)>,
 ) -> Result<NewFull<Arc<FullClient<RuntimeApi, Executor>>>, Error>
 	where
@@ -536,7 +536,7 @@ pub fn new_full<RuntimeApi, Executor>(
 		use sc_network::Event;
 		use futures::StreamExt;
 
-		if authority_discovery_enabled {
+		if !authority_discovery_disabled {
 			let (sentries, authority_discovery_role) = match role {
 				Role::Authority { ref sentry_nodes } => (
 					sentry_nodes.clone(),
@@ -743,31 +743,31 @@ pub fn build_light(config: Configuration) -> Result<(TaskManager, RpcHandlers),
 #[cfg(feature = "full-node")]
 pub fn build_full(
 	config: Configuration,
-	authority_discovery_enabled: bool,
+	authority_discovery_disabled: bool,
 	grandpa_pause: Option<(u32, u32)>,
 ) -> Result<NewFull<Client>, ServiceError> {
 	if config.chain_spec.is_rococo() {
 		new_full::<rococo_runtime::RuntimeApi, RococoExecutor>(
 			config,
-			authority_discovery_enabled,
+			authority_discovery_disabled,
 			grandpa_pause,
 		).map(|full| full.with_client(Client::Rococo))
 	} else if config.chain_spec.is_kusama() {
 		new_full::<kusama_runtime::RuntimeApi, KusamaExecutor>(
 			config,
-			authority_discovery_enabled,
+			authority_discovery_disabled,
 			grandpa_pause,
 		).map(|full| full.with_client(Client::Kusama))
 	} else if config.chain_spec.is_westend() {
 		new_full::<westend_runtime::RuntimeApi, WestendExecutor>(
 			config,
-			authority_discovery_enabled,
+			authority_discovery_disabled,
 			grandpa_pause,
 		).map(|full| full.with_client(Client::Westend))
 	} else {
 		new_full::<polkadot_runtime::RuntimeApi, PolkadotExecutor>(
 			config,
-			authority_discovery_enabled,
+			authority_discovery_disabled,
 			grandpa_pause,
 		).map(|full| full.with_client(Client::Polkadot))
 	}

node/test-service/src/lib.rs

@@ -61,14 +61,14 @@ native_executor_instance!(
 /// Create a new Polkadot test service for a full node.
 pub fn polkadot_test_new_full(
 	config: Configuration,
-	authority_discovery_enabled: bool,
+	authority_discovery_disabled: bool,
 ) -> Result<
 	NewFull<Arc<FullClient<polkadot_test_runtime::RuntimeApi, PolkadotTestExecutor>>>,
 	ServiceError,
 > {
 	new_full::<polkadot_test_runtime::RuntimeApi, PolkadotTestExecutor>(
 		config,
-		authority_discovery_enabled,
+		authority_discovery_disabled,
 		None,
 	).map_err(Into::into)
 }
@@ -192,9 +192,9 @@ pub fn run_test_node(
 > {
 	let config = node_config(storage_update_func, task_executor, key, boot_nodes);
 	let multiaddr = config.network.listen_addresses[0].clone();
-	let authority_discovery_enabled = false;
+	let authority_discovery_disabled = true;
 	let NewFull {task_manager, client, network, rpc_handlers, overseer_handler, ..} =
-		polkadot_test_new_full(config, authority_discovery_enabled)
+		polkadot_test_new_full(config, authority_discovery_disabled)
 			.expect("could not create Polkadot test service");
 
 	let peer_id = network.local_peer_id().clone();