introduce uptime monitor for easytier public nodes (#1250)

easytier/src/proto/peer_rpc.proto

@@ -60,6 +60,16 @@ message RouteForeignNetworkInfos {
   repeated Info infos = 1;
 }
 
+message RouteForeignNetworkSummary {
+  message Info {
+    uint32 peer_id = 1;
+    uint32 network_count = 2;
+    uint32 peer_count = 3;
+  }
+
+  map<uint32, Info> info_map = 1;
+}
+
 message SyncRouteInfoRequest {
   uint32 my_peer_id = 1;
   uint64 my_session_id = 2;

easytier/src/proto/web.proto

@@ -102,6 +102,7 @@ message NetworkInstanceRunningInfo {
   repeated cli.PeerRoutePair peer_route_pairs = 6;
   bool running = 7;
   optional string error_msg = 8;
+  peer_rpc.RouteForeignNetworkSummary foreign_network_summary = 9;
 }
 
 message NetworkInstanceRunningInfoMap {