cli: enable BEEFY by default on test networks (#7293)

We consider BEEFY mature enough to run by default on all nodes
for test networks (Rococo/Wococo/Versi).

Right now, most nodes are not running it since it's opt-in using
--beefy flag. Switch to an opt-out model for test networks.

Replace --beefy flag from CLI with --no-beefy and have BEEFY
client start by default on test networks.

Signed-off-by: acatangiu <adrian@parity.io>

polkadot/cli/src/cli.rs

@@ -114,9 +114,10 @@ pub struct RunCmd {
 	#[arg(long = "grandpa-pause", num_args = 2)]
 	pub grandpa_pause: Vec<u32>,
 
-	/// Enable the BEEFY gadget (only on Rococo or Wococo for now).
+	/// Disable the BEEFY gadget
+	/// (currently enabled by default on Rococo, Wococo and Versi).
 	#[arg(long)]
-	pub beefy: bool,
+	pub no_beefy: bool,
 
 	/// Add the destination address to the jaeger agent.
 	///

polkadot/cli/src/command.rs

@@ -298,12 +298,9 @@ where
 		.map_err(Error::from)?;
 	let chain_spec = &runner.config().chain_spec;
 
-	// Disallow BEEFY on production networks.
-	if cli.run.beefy &&
-		(chain_spec.is_polkadot() || chain_spec.is_kusama() || chain_spec.is_westend())
-	{
-		return Err(Error::Other("BEEFY disallowed on production networks".to_string()))
-	}
+	// By default, enable BEEFY on test networks.
+	let enable_beefy = (chain_spec.is_rococo() || chain_spec.is_wococo() || chain_spec.is_versi()) &&
+		!cli.run.no_beefy;
 
 	set_default_ss58_version(chain_spec);
 
@@ -346,7 +343,7 @@ where
 			config,
 			service::IsCollator::No,
 			grandpa_pause,
-			cli.run.beefy,
+			enable_beefy,
 			jaeger_agent,
 			None,
 			false,

polkadot/node/service/src/lib.rs

@@ -1158,15 +1158,11 @@ where
 
 		let gadget = beefy::start_beefy_gadget::<_, _, _, _, _, _, _>(beefy_params);
 
-		// Wococo's purpose is to be a testbed for BEEFY, so if it fails we'll
+		// BEEFY currently only runs on testnets, if it fails we'll
 		// bring the node down with it to make sure it is noticed.
-		if chain_spec.is_wococo() {
-			task_manager
-				.spawn_essential_handle()
-				.spawn_blocking("beefy-gadget", None, gadget);
-		} else {
-			task_manager.spawn_handle().spawn_blocking("beefy-gadget", None, gadget);
-		}
+		task_manager
+			.spawn_essential_handle()
+			.spawn_blocking("beefy-gadget", None, gadget);
 
 		if is_offchain_indexing_enabled {
 			task_manager.spawn_handle().spawn_blocking(

polkadot/zombienet_tests/functional/0003-beefy-and-mmr.toml

@@ -9,8 +9,8 @@ command = "polkadot"
 [[relaychain.node_groups]]
 name = "validator"
 count = 3
-args = ["--log=beefy=debug", "--beefy", "--enable-offchain-indexing=true"]
+args = ["--log=beefy=debug", "--enable-offchain-indexing=true"]
 
 [[relaychain.nodes]]
 name = "validator-unstable"
-args = ["--log=beefy=debug", "--beefy", "--enable-offchain-indexing=true"]
+args = ["--log=beefy=debug", "--enable-offchain-indexing=true"]