Add custom json-rpc method to initialize the trusted block root (#2805)

fluffy/fluffy.nim

@@ -28,7 +28,7 @@ import
   ./rpc/[
     rpc_eth_api, rpc_debug_api, rpc_discovery_api, rpc_portal_common_api,
     rpc_portal_history_api, rpc_portal_beacon_api, rpc_portal_state_api,
-    rpc_portal_debug_history_api,
+    rpc_portal_nimbus_beacon_api, rpc_portal_debug_history_api,
   ],
   ./database/content_db,
   ./portal_node,
@@ -273,6 +273,7 @@ proc run(
           rpcServer.installPortalBeaconApiHandlers(
             node.beaconNetwork.value.portalProtocol
           )
+          rpcServer.installPortalNimbusBeaconApiHandlers(node.beaconNetwork.value)
         if node.stateNetwork.isSome():
           rpcServer.installPortalCommonApiHandlers(
             node.stateNetwork.value.portalProtocol, PortalSubnetwork.state

fluffy/network/beacon/beacon_network.nim

@@ -357,7 +357,7 @@ proc validateContent(
 
       debug "Received offered content validated successfully", contentKey
     else:
-      error "Received offered content failed validation",
+      debug "Received offered content failed validation",
         contentKey, error = validation.error
       return false
 

fluffy/rpc/rpc_portal_nimbus_beacon_api.nim

@@ -0,0 +1,19 @@
+# nimbus
+# Copyright (c) 2024 Status Research & Development GmbH
+# Licensed and distributed under either of
+#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
+#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
+{.push raises: [].}
+
+import json_rpc/rpcserver, ../network/beacon/beacon_network
+
+export rpcserver
+
+# Nimbus/fluffy specific RPC methods for the Portal beacon network.
+proc installPortalNimbusBeaconApiHandlers*(rpcServer: RpcServer, n: BeaconNetwork) =
+  rpcServer.rpc("portal_nimbus_beaconSetTrustedBlockRoot") do(blockRoot: string) -> bool:
+    let root = Digest.fromHex(blockRoot)
+    n.trustedBlockRoot = Opt.some(root)
+    true