RPC Admin namespace implementation (#685)

* AdminApi first draft

* Implement add_trusted_peer and remove_trusted_peer

* Fix tests

* Refactoring NetworkHandle peer related methods

* Refactoring add_discovered_node in PeersManager

* Change record type from String to NodeRecord

* Adding NetworkHandleMessage::RemovePeer command

crates/net/rpc/src/admin/mod.rs

@@ -0,0 +1,38 @@
+use jsonrpsee::core::RpcResult;
+use reth_network::{peers::PeerKind, NetworkHandle};
+use reth_primitives::NodeRecord;
+use reth_rpc_api::AdminApiServer;
+
+struct AdminApi {
+    /// An interface to interact with the network
+    network: NetworkHandle,
+}
+
+impl AdminApiServer for AdminApi {
+    fn add_peer(&self, record: NodeRecord) -> RpcResult<bool> {
+        self.network.add_peer(record.id, record.tcp_addr());
+        Ok(true)
+    }
+
+    fn remove_peer(&self, record: NodeRecord) -> RpcResult<bool> {
+        self.network.remove_peer(record.id, PeerKind::Basic);
+        Ok(true)
+    }
+
+    fn add_trusted_peer(&self, record: NodeRecord) -> RpcResult<bool> {
+        self.network.add_trusted_peer(record.id, record.tcp_addr());
+        Ok(true)
+    }
+
+    fn remove_trusted_peer(&self, record: NodeRecord) -> RpcResult<bool> {
+        self.network.remove_peer(record.id, PeerKind::Trusted);
+        Ok(true)
+    }
+
+    fn subscribe(
+        &self,
+        _subscription_sink: jsonrpsee::SubscriptionSink,
+    ) -> jsonrpsee::types::SubscriptionResult {
+        todo!()
+    }
+}

crates/net/rpc/src/lib.rs

@@ -11,6 +11,7 @@
 //!
 //! Provides the implementation of all RPC interfaces.
 
+mod admin;
 mod engine;
 mod eth;
 mod net;