properly implement more values

* fix the bad job with commit bf05b826
+ proper guidance methods complete with a proper name

metrics.py

@@ -82,6 +82,10 @@ class EjabberdMetrics(EjabberdApiCalls):
         self._s2s_in = self.fetch_s2s_in()
         self._s2s_out = self.fetch_s2s_out()
 
+        # misc
+        self._uptime = self.fetch_uptime()
+        self._processes = self.fetch_processes()
+
     def get_online_by(self, by="node", parse=None, vhost=None, node=None):
         parser = parse or (lambda a: a)
         if not hasattr(self, "_onlineuser"):
@@ -177,6 +181,16 @@ class EjabberdMetrics(EjabberdApiCalls):
             self._s2s_out = self.fetch_s2s_out()
         return self._s2s_out
 
+    def get_uptime(self):
+        if not hasattr(self, "_uptime"):
+            self._uptime = self.fetch_uptime()
+        return self._uptime
+
+    def get_processes(self):
+        if not hasattr(self, '_processes'):
+            self._processes = self.fetch_processes()
+        return self._processes
+
     def get_vhost_metrics(self, vhost): 
         data = {
             "registered": self.get_registered(vhost),
@@ -212,8 +226,8 @@ class EjabberdMetrics(EjabberdApiCalls):
             "muc": self.get_muc(),
             "s2s_in": self.get_s2s_in(),
             "s2s_out":  self.get_s2s_out(),
-            "uptime": self.fetch_uptime(),
-            "processes": self.fetch_processes(),
+            "uptime": self.get_uptime(),
+            "processes": self.get_processes(),
             "online_by_status": self.get_online_by_status(),
             "online_by_client": self.get_online_by_client(),
             "online_by_ipversion": self.get_online_by_ipversion(),