final touches

# added
+ add method to escape whitespaces in keys and values

# changed
* init client handler only once and not every time
* don't try to create database on every run just on the first one

# removed
- vhosts are listed first and after that the respective nodes are listed

.gitignore

@@ -109,3 +109,7 @@ dmypy.json
 
 # Pycharm
 .idea/
+.venv/
+
+# config
+config.json

contrib/init/linux-systemd/ejabberd-influxdb.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=ejabberd2influxdb
+
+[Service]
+Type=simple
+User=nobody
+Group=nobody
+ExecStart=/opt/ejabberd-metrics/influx.py
+Restart=always
+RestartSec=5s
+Environment=PATH=/usr/bin:/usr/local/bin
+
+[Install]
+WantedBy=multi-user.target

ejabberdrpc.py

@@ -109,7 +109,11 @@ class EjabberdMetrics():
     def fetch_muc(self, vhost=None):
         host = "global"
         if vhost is not None:
-            host = "conference." + vhost
+            version = self._cmd("status", {})
+            if "19.09" in version:
+                host = "conference." + vhost
+            else:
+                host = vhost
         result = self._cmd("muc_online_rooms", {"host": host})
         if "rooms" in result:
             return len(result["rooms"])

influx.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import json
+import time
+
+from influxdb import InfluxDBClient
+
+from ejabberdrpc import EjabberdMetrics
+
+
+class Influx:
+    def __init__(self, metrics, client):
+        self._metrics = metrics
+        self.client = client
+
+    @staticmethod
+    def _timestamp():
+        return int(time.time() * 1000)
+
+    @staticmethod
+    def _rmspace(key: str = None, value=None):
+        try:
+            key = key.replace(" ", "\ ")
+            value = value.replace(" ","\ ")
+        except (TypeError, AttributeError):
+            pass
+
+        return key, value
+
+    def _parse(self, name, key, value, ts, tags=None):
+        output = name
+
+        # check if tags is a dict
+        if isinstance(tags, dict):
+
+            # create tag_key=tag_value pairs for all elements and append them to name
+            for k, v in tags.items():
+                output += ",{}={}".format(*self._rmspace(k, v))
+
+        # append key=value to name
+        output += ' {}={}i {}'.format(*self._rmspace(key, value), ts)
+        return output
+
+    def writeMetrics(self):
+        name = "ejabberd"
+        data = list()
+
+        # global values
+        cur_ts = self._timestamp()
+        data.append("{m} s2s_in={v}i {ts}".format(m=name, v=self._metrics.get_s2s_in(), ts=cur_ts))
+        data.append("{m} s2s_out={v}i {ts}".format(m=name, v=self._metrics.get_s2s_out(), ts=cur_ts))
+
+        # vhost values
+        for vhost in self._metrics.get_vhosts():
+            cur_ts = self._timestamp()
+            data.append("{m},vhost={vh} registered={v}i {ts}".format(m=name, vh= vhost, v=self._metrics.get_registered(vhost),ts=cur_ts))
+            data.append("{m},vhost={vh} muc={v}i {ts}".format(m=name, vh= vhost, v=self._metrics.get_muc(vhost), ts=cur_ts))
+
+            # vhost statistics on their repsective node
+            for node in self._metrics.get_nodes():
+                cur_ts = self._timestamp()
+                for k, v in self._metrics.get_online_by_status(node=node, vhost=vhost).items():
+                    data.append(self._parse("ejabberd_online_status", k, v, cur_ts, {"node": node, "vhost": vhost}))
+                for k, v in self._metrics.get_online_by_client(node=node, vhost=vhost).items():
+                    data.append(self._parse("ejabberd_online_client", k, v, cur_ts, {"node": node, "vhost": vhost}))
+                for k, v in self._metrics.get_online_by_ipversion(node=node, vhost=vhost).items():
+                    data.append(self._parse("ejabberd_online_ipversion", k, v, cur_ts, {"node": node, "vhost": vhost}))
+                for k, v in self._metrics.get_online_by_connection(node=node, vhost=vhost).items():
+                    data.append(self._parse("ejabberd_online_connection", k, v, cur_ts, {"node": node, "vhost": vhost}))
+                for cl, ipv in self._metrics.get_online_client_by_ipversion(node=node, vhost=vhost).items():
+                    for k, v in ipv.items():
+                        data.append(self._parse("ejabberd_online_client_ipversion", k, v, cur_ts, {"vhost": vhost, "node": node, "ipversion": k, "client": cl}))
+
+        # write output to database
+        self.client.write_points(data, database='custom', time_precision='ms', batch_size=10000, protocol='line')
+
+if __name__ == "__main__":
+    with open("config.json", "r", encoding="utf-8") as f:
+        login = json.load(f)
+
+    # init global handler
+    metrics = EjabberdMetrics("http://localhost:4560", login)
+    client = InfluxDBClient(host='localhost', port=8086, database='custom')
+
+    # create database only once
+    client.create_database('custom')
+
+    # init influx class
+    influx = Influx(metrics, client)
+
+    while True:
+        # TODO this will fail when the connection drops try except maybe?
+        metrics.update()
+        influx.writeMetrics()
+
+        time.sleep(10)