fetch_muc improvements

+ add parsed version string property
* improve fetch_muc method to not request the status string for each request

ejabberdrpc.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 import ipaddress
+import re
+
+from packaging import version
 
 # rfc6052: IPv6 Addressing of IPv4/IPv6 Translators
 nat64 = ipaddress.ip_network("64:ff9b::/96")
@@ -25,6 +28,20 @@ class EjabberdMetrics:
             return f"{self._login['user']}@{self._login['server']}", self._login['password']
         return None
 
+    @property
+    def _verstring(self):
+        if self._login is not None:
+            ver_str = re.compile('([1-9][0-9.-]*)')
+            status = self._cmd('status', {})
+
+            # matches
+            tmp = ver_str.findall(status)[0]
+
+            # return parsed version string
+            return version.parse(tmp)
+
+        return None
+
     def _rest(self, command: str, data):
         import requests
 
@@ -138,8 +155,7 @@ class EjabberdMetrics:
     def fetch_muc(self, vhost=None):
         host = "global"
         if vhost is not None:
-            version = self._cmd("status", {})
-            if "19.09" in version:
+            if self._verstring.major > 19:
                 host = "conference." + vhost
             else:
                 host = vhost

requirements.txt

@@ -1,2 +1,3 @@
 influxdb>=5.2.0
 requests>=2.21.0
+packaging>=20.1