python.d/nginx_log.chart.py

   1 # -*- coding: utf-8 -*-
   2 # Description: nginx log netdata python.d module
   3 # Author: Pawel Krupa (paulfantom)
   4
   5 from base import LogService
   6 import re
   7
   8 priority = 60000
   9 retries = 60
  10 # update_every = 3
  11
  12 ORDER = ['codes']
  13 CHARTS = {
  14     'codes': {
  15         'options': [None, 'nginx status codes', 'requests/s', 'requests', 'nginx_log.codes', 'stacked'],
  16         'lines': [
  17             ["2xx", None, "incremental"],
  18             ["3xx", None, "incremental"],
  19             ["4xx", None, "incremental"],
  20             ["5xx", None, "incremental"]
  21         ]}
  22 }
  23
  24
  25 class Service(LogService):
  26     def __init__(self, configuration=None, name=None):
  27         LogService.__init__(self, configuration=configuration, name=name)
  28         if len(self.log_path) == 0:
  29             self.log_path = "/var/log/nginx/access.log"
  30         self.order = ORDER
  31         self.definitions = CHARTS
  32         pattern = r'" ([0-9]{3}) ?'
  33         #pattern = r'(?:" )([0-9][0-9][0-9]) ?'
  34         self.regex = re.compile(pattern)
  35
  36     def _get_data(self):
  37         """
  38         Parse new log lines
  39         :return: dict
  40         """
  41         data = {'2xx': 0,
  42                 '3xx': 0,
  43                 '4xx': 0,
  44                 '5xx': 0}
  45         try:
  46             raw = self._get_raw_data()
  47             if raw is None:
  48                 return None
  49             elif not raw:
  50                 return data
  51         except (ValueError, AttributeError):
  52             return None
  53
  54         regex = self.regex
  55         for line in raw:
  56             code = regex.search(line)
  57             try:
  58                 beginning = code.group(1)[0]
  59             except AttributeError:
  60                 continue
  61
  62             if beginning == '2':
  63                 data["2xx"] += 1
  64             elif beginning == '3':
  65                 data["3xx"] += 1
  66             elif beginning == '4':
  67                 data["4xx"] += 1
  68             elif beginning == '5':
  69                 data["5xx"] += 1
  70
  71         return data
  72