grandpa: protocol_name mod instead of struct

client/finality-grandpa/src/communication/mod.rs

@@ -67,22 +67,21 @@ mod periodic;
 #[cfg(test)]
 pub(crate) mod tests;
 
-pub(crate) struct GrandpaProtocolName {}
-impl GrandpaProtocolName {
+pub(crate) mod grandpa_protocol_name {
 	const NAME: &'static str = "/grandpa/1";
 	/// Old names for the notifications protocol, used for backward compatibility.
 	pub const LEGACY_NAMES: [&'static str; 1] = ["/paritytech/grandpa/1"];
 
 	/// Name of the notifications protocol used by Grandpa.
 	/// Must be registered towards the networking in order for Grandpa to properly function.
 	pub fn with_prefix(prefix: &str) -> String {
-		format!("{}{}", prefix, Self::NAME)
+		format!("{}{}", prefix, NAME)
 	}
 
 	#[cfg(test)]
 	/// Protocol name used in tests.
 	pub fn test_name() -> String {
-		format!("/test{}", Self::NAME)
+		format!("/test{}", NAME)
 	}
 }
 
@@ -235,7 +234,7 @@ impl<B: BlockT, N: Network<B>> NetworkBridge<B, N> {
 		prometheus_registry: Option<&Registry>,
 		telemetry: Option<TelemetryHandle>,
 	) -> Self {
-		let protocol = GrandpaProtocolName::with_prefix(&config.protocol_name_prefix);
+		let protocol = grandpa_protocol_name::with_prefix(&config.protocol_name_prefix);
 		let (validator, report_stream) =
 			GossipValidator::new(config, set_state.clone(), prometheus_registry, telemetry.clone());
 

client/finality-grandpa/src/lib.rs

@@ -263,7 +263,7 @@ pub struct Config {
 	pub keystore: Option<SyncCryptoStorePtr>,
 	/// TelemetryHandle instance.
 	pub telemetry: Option<TelemetryHandle>,
-	/// Protocol name prefix - usually chain ID and genesis truncated hash.
+	/// Protocol name prefix - usually genesis hash and optional fork id.
 	pub protocol_name_prefix: String,
 }
 
@@ -717,10 +717,10 @@ pub struct GrandpaParams<Block: BlockT, C, N, SC, VR> {
 /// Returns the configuration value to put in
 /// [`sc_network::config::NetworkConfiguration::extra_sets`].
 pub fn grandpa_peers_set_config(chain_prefix: &str) -> sc_network::config::NonDefaultSetConfig {
-	use communication::GrandpaProtocolName;
+	use communication::grandpa_protocol_name;
 	sc_network::config::NonDefaultSetConfig {
-		notifications_protocol: GrandpaProtocolName::with_prefix(chain_prefix).into(),
-		fallback_names: GrandpaProtocolName::LEGACY_NAMES.iter().map(|&n| n.into()).collect(),
+		notifications_protocol: grandpa_protocol_name::with_prefix(chain_prefix).into(),
+		fallback_names: grandpa_protocol_name::LEGACY_NAMES.iter().map(|&n| n.into()).collect(),
 		// Notifications reach ~256kiB in size at the time of writing on Kusama and Polkadot.
 		max_notification_size: 1024 * 1024,
 		set_config: sc_network::config::SetConfig {