Added extension support for auth rpc module (#6060)

Co-authored-by: root <root@Arindam>

bin/reth/src/args/rpc_server_args.rs

@@ -242,7 +242,7 @@ impl RpcServerArgs {
         let module_config = self.transport_rpc_module_config();
         debug!(target: "reth::cli", http=?module_config.http(), ws=?module_config.ws(), "Using RPC module config");
 
-        let (mut modules, auth_module, mut registry) = RpcModuleBuilder::default()
+        let (mut modules, mut auth_module, mut registry) = RpcModuleBuilder::default()
             .with_provider(components.provider())
             .with_pool(components.pool())
             .with_network(components.network())
@@ -250,7 +250,11 @@ impl RpcServerArgs {
             .with_executor(components.task_executor())
             .build_with_auth_server(module_config, engine_api);
 
-        let rpc_components = RethRpcComponents { registry: &mut registry, modules: &mut modules };
+        let rpc_components = RethRpcComponents {
+            registry: &mut registry,
+            modules: &mut modules,
+            auth_module: &mut auth_module,
+        };
         // apply configured customization
         conf.extend_rpc_modules(self, components, rpc_components)?;
 
@@ -268,7 +272,7 @@ impl RpcServerArgs {
             handle
         });
 
-        let launch_auth = auth_module.start_server(auth_config).map_ok(|handle| {
+        let launch_auth = auth_module.clone().start_server(auth_config).map_ok(|handle| {
             let addr = handle.local_addr();
             info!(target: "reth::cli", url=%addr, "RPC auth server started");
             handle
@@ -279,7 +283,11 @@ impl RpcServerArgs {
         let handles = RethRpcServerHandles { rpc, auth };
 
         // call hook
-        let rpc_components = RethRpcComponents { registry: &mut registry, modules: &mut modules };
+        let rpc_components = RethRpcComponents {
+            registry: &mut registry,
+            modules: &mut modules,
+            auth_module: &mut auth_module,
+        };
         conf.on_rpc_server_started(self, components, rpc_components, handles.clone())?;
 
         Ok(handles)

bin/reth/src/cli/components.rs

@@ -8,7 +8,8 @@ use reth_provider::{
     EvmEnvProvider, StateProviderFactory,
 };
 use reth_rpc_builder::{
-    auth::AuthServerHandle, RethModuleRegistry, RpcServerHandle, TransportRpcModules,
+    auth::{AuthRpcModule, AuthServerHandle},
+    RethModuleRegistry, RpcServerHandle, TransportRpcModules,
 };
 use reth_tasks::TaskSpawner;
 use reth_transaction_pool::TransactionPool;
@@ -75,11 +76,11 @@ pub trait RethNodeComponents: Clone + Send + Sync + 'static {
     }
 }
 
-/// Helper container to encapsulate [RethModuleRegistry] and [TransportRpcModules].
+/// Helper container to encapsulate [RethModuleRegistry],[TransportRpcModules] and [AuthRpcModule].
 ///
 /// This can be used to access installed modules, or create commonly used handlers like
 /// [reth_rpc::EthApi], and ultimately merge additional rpc handler into the configured transport
-/// modules [TransportRpcModules].
+/// modules [TransportRpcModules] as well as configured authenticated methods [AuthRpcModule].
 #[derive(Debug)]
 #[allow(clippy::type_complexity)]
 pub struct RethRpcComponents<'a, Reth: RethNodeComponents> {
@@ -98,6 +99,10 @@ pub struct RethRpcComponents<'a, Reth: RethNodeComponents> {
     /// This can be used to merge additional modules into the configured transports (http, ipc,
     /// ws). See [TransportRpcModules::merge_configured]
     pub modules: &'a mut TransportRpcModules,
+    /// Holds jwt authenticated rpc module.
+    ///
+    /// This can be used to merge additional modules into the configured authenticated methods
+    pub auth_module: &'a mut AuthRpcModule,
 }
 
 /// A Generic implementation of the RethNodeComponents trait.

crates/rpc/rpc-builder/src/auth.rs

@@ -9,6 +9,7 @@ pub use jsonrpsee::server::ServerBuilder;
 use jsonrpsee::{
     http_client::HeaderMap,
     server::{RpcModule, ServerHandle},
+    Methods,
 };
 use reth_network_api::{NetworkInfo, Peers};
 use reth_node_api::EngineTypes;
@@ -247,12 +248,12 @@ impl AuthServerConfigBuilder {
 }
 
 /// Holds installed modules for the auth server.
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct AuthRpcModule {
     pub(crate) inner: RpcModule<()>,
 }
 
-// === impl TransportRpcModules ===
+// === impl AuthRpcModule ===
 
 impl AuthRpcModule {
     /// Create a new `AuthRpcModule` with the given `engine_api`.
@@ -271,6 +272,16 @@ impl AuthRpcModule {
         &mut self.inner
     }
 
+    /// Merge the given [Methods] in the configured authenticated methods.
+    ///
+    /// Fails if any of the methods in other is present already.
+    pub fn merge_auth_methods(
+        &mut self,
+        other: impl Into<Methods>,
+    ) -> Result<bool, jsonrpsee::core::error::Error> {
+        self.module_mut().merge(other.into()).map(|_| true)
+    }
+
     /// Convenience function for starting a server
     pub async fn start_server(
         self,

examples/additional-rpc-namespace-in-cli/src/main.rs

@@ -6,7 +6,7 @@
 //! cargo run -p additional-rpc-namespace-in-cli -- node --http --ws --enable-ext
 //! ```
 //!
-//! This installs an additional RPC method `txpoolExt_transactionCount` that can queried via [cast](https://github.com/foundry-rs/foundry)
+//! This installs an additional RPC method `txpoolExt_transactionCount` that can be queried via [cast](https://github.com/foundry-rs/foundry)
 //!
 //! ```sh
 //! cast rpc txpoolExt_transactionCount