openvpn status log plugin added

diff --git a/python.d/ovpn_status_log.chart.py b/python.d/ovpn_status_log.chart.py
new file mode 100644 (file)
index 0000000..2480dce
--- /dev/null
+++ b/python.d/ovpn_status_log.chart.py
@@ -0,0 +1,77 @@
+# -*- coding: utf-8 -*-
+# Description: openvpn status log netdata python.d module
+# Author: l2isbad
+
+from base import SimpleService
+from re import compile, findall, search, subn
+priority = 60000
+retries = 60
+update_every = 10
+
+ORDER = ['users', 'traffic']
+CHARTS = {
+    'users': {
+        'options': [None, 'OpenVPN active users', 'active users', 'Users', 'openvpn_status.users', 'line'],
+        'lines': [
+            ["users", None, "absolute"],
+        ]},
+    'traffic': {
+        'options': [None, 'OpenVPN traffic', 'kilobit/s', 'Traffic', 'openvpn_status.traffic', 'area'],
+        'lines': [
+            ["in", None, "incremental", 8, 1000], ["out", None, "incremental", 8, -1000]
+        ]},
+
+}
+
+class Service(SimpleService):
+    def __init__(self, configuration=None, name=None):
+        SimpleService.__init__(self, configuration=configuration, name=name)
+        self.order = ORDER
+        self.definitions = CHARTS
+        self.log_path = self.configuration.get('log_path')
+        self.regex_data_inter = compile(r'(?<=Since ).*?(?=.ROUTING)')
+        self.regex_data_final = compile(r'\d{1,3}(?:\.\d{1,3}){3}[:0-9,. ]*')
+        self.regex_users = compile(r'\d{1,3}(?:\.\d{1,3}){3}:\d+')
+        self.regex_traffic = compile(r'(?<=(?:,| ))\d+(?=(?:,| ))')
+
+    def check(self):
+        if not self._get_raw_data():
+            self.error('Make sure that the openvpn status log file exists and netdata has permission to read it')
+            return False
+        else:
+            self.info('Plugin was started succesfully')
+            return True
+
+    def _get_raw_data(self):
+        """
+        Open log file
+        :return: str
+        """
+        try:
+            with open(self.log_path, 'rt') as log:
+                result = log.read()
+        except Exception:
+            return None
+        else:
+            return result
+
+    def _get_data(self):
+        """
+        Parse openvpn-status log file.
+        Current regex version is ok for status-version 1, 2 and 3. Both users and bytes in/out are collecting.
+        """
+
+        raw_data = self._get_raw_data()
+        try:
+            data_inter = self.regex_data_inter.search(' '.join(raw_data.splitlines())).group()
+        except AttributeError:
+            string = ''
+
+        data_final = ' '.join(self.regex_data_final.findall(data_inter))
+        users = self.regex_users.subn('', data_final)[1]
+        traffic = self.regex_traffic.findall(data_final)
+
+        bytes_in = sum([int(traffic[i]) for i in range(len(traffic)) if (i + 1) % 2 is 1])
+        bytes_out = sum([int(traffic[i]) for i in range(len(traffic)) if (i + 1) % 2 is 0])
+
+        return {'users': users, 'in': bytes_in, 'out': bytes_out}