warp-sync: Return an error when trying to enable it for archive nodes.

client/network/src/config.rs

@@ -377,8 +377,8 @@ impl From<multiaddr::Error> for ParseErr {
 	}
 }
 
-#[derive(Clone, Debug, Eq, PartialEq)]
 /// Sync operation mode.
+#[derive(Clone, Debug, Eq, PartialEq)]
 pub enum SyncMode {
 	/// Full block download and verification.
 	Full,
@@ -393,6 +393,18 @@ pub enum SyncMode {
 	Warp,
 }
 
+impl SyncMode {
+	/// Returns if `self` is [`Self::Warp`].
+	pub fn is_warp(&self) -> bool {
+		matches!(self, Self::Warp)
+	}
+
+	/// Returns if `self` is [`Self::Fast`].
+	pub fn is_fast(&self) -> bool {
+		matches!(self, Self::Fast { .. })
+	}
+}
+
 impl Default for SyncMode {
 	fn default() -> Self {
 		Self::Full

client/service/src/builder.rs

@@ -39,7 +39,7 @@ use sc_executor::RuntimeVersionOf;
 use sc_keystore::LocalKeystore;
 use sc_network::{
 	block_request_handler::{self, BlockRequestHandler},
-	config::Role,
+	config::{Role, SyncMode},
 	light_client_requests::{self, handler::LightClientRequestHandler},
 	state_request_handler::{self, StateRequestHandler},
 	warp_request_handler::{self, RequestHandler as WarpSyncRequestHandler, WarpSyncProvider},
@@ -767,6 +767,18 @@ where
 		warp_sync,
 	} = params;
 
+	if warp_sync.is_none() && config.network.sync_mode.is_warp() {
+		return Err("Warp sync enabled, but no warp sync provider configured.".into())
+	}
+
+	if config.state_pruning.is_archive() {
+		match config.network.sync_mode {
+			SyncMode::Fast { .. } => return Err("Fast sync doesn't work for archive nodes".into()),
+			SyncMode::Warp => return Err("Warp sync doesn't work for archive nodes".into()),
+			SyncMode::Full => {},
+		};
+	}
+
 	let transaction_pool_adapter = Arc::new(TransactionPoolAdapter {
 		imports_external_transactions: !matches!(config.role, Role::Light),
 		pool: transaction_pool,