From: Aurelien DARRAGON <adarragon@haproxy.com>
Date: Wed, 29 Mar 2023 09:30:36 +0000 (+0200)
Subject: MINOR: hlua_fcn: add Server.tracking()
X-Git-Tag: v2.8-dev10~31
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=406511a2dffe8a4e011929854efc3322b55a5237;p=thirdparty%2Fhaproxy.git

MINOR: hlua_fcn: add Server.tracking()

This function returns the currently tracked server, if any.
---

diff --git a/doc/lua-api/index.rst b/doc/lua-api/index.rst
index 5c05871aa1..4055ac24d4 100644
--- a/doc/lua-api/index.rst
+++ b/doc/lua-api/index.rst
@@ -1337,6 +1337,15 @@ Server class
   :param class_server sv: A :ref:`server_class` which indicates the manipulated
    server.
 
+.. js:function:: Server.tracking(sv)
+
+  Check if the current server is tracking another server.
+
+  :param class_server sv: A :ref:`server_class` which indicates the manipulated
+   server.
+  :returns: A :ref:`server_class` which indicates the tracked server or nil if
+   the server doesn't track another one.
+
 .. js:function:: Server.event_sub(sv, event_types, func)
 
   Register a function that will be called on specific server events.
diff --git a/src/hlua_fcn.c b/src/hlua_fcn.c
index 61eb580f35..931b609706 100644
--- a/src/hlua_fcn.c
+++ b/src/hlua_fcn.c
@@ -1410,6 +1410,26 @@ int hlua_server_agent_force_down(lua_State *L)
 	return 0;
 }
 
+/* returns the tracked server, if any */
+int hlua_server_tracking(lua_State *L)
+{
+	struct server *sv;
+	struct server *tracked;
+
+	sv = hlua_check_server(L, 1);
+	if (sv == NULL) {
+		return 0;
+	}
+
+	tracked = sv->track;
+	if (tracked == NULL)
+		lua_pushnil(L);
+	else
+		hlua_fcn_new_server(L, tracked);
+
+	return 1;
+}
+
 /* hlua_event_sub wrapper for per-server subscription:
  *
  * hlua_event_sub() is called with sv->e_subs subscription list and
@@ -1472,6 +1492,7 @@ int hlua_fcn_new_server(lua_State *L, struct server *srv)
 	hlua_class_function(L, "agent_disable", hlua_server_agent_disable);
 	hlua_class_function(L, "agent_force_up", hlua_server_agent_force_up);
 	hlua_class_function(L, "agent_force_down", hlua_server_agent_force_down);
+	hlua_class_function(L, "tracking", hlua_server_tracking);
 	hlua_class_function(L, "event_sub", hlua_server_event_sub);
 
 	return 1;