netdata/python.d/nginx.chart.py

# -*- coding: utf-8 -*-
# Description: nginx netdata python.d module
# Author: Pawel Krupa (paulfantom)

from bases.FrameworkServices.UrlService import UrlService

# default module values (can be overridden per job in `config`)
# update_every = 2
priority = 60000
retries = 60

# default job configuration (overridden by python.d.plugin)
# config = {'local': {
#             'update_every': update_every,
#             'retries': retries,
#             'priority': priority,
#             'url': 'http://localhost/stub_status'
#          }}

# charts order (can be overridden if you want less charts, or different order)
ORDER = ['connections', 'requests', 'connection_status', 'connect_rate']

CHARTS = {
    'connections': {
        'options': [None, 'nginx Active Connections', 'connections', 'active connections',
                    'nginx.connections', 'line'],
        'lines': [
            ["active"]
        ]},
    'requests': {
        'options': [None, 'nginx Requests', 'requests/s', 'requests', 'nginx.requests', 'line'],
        'lines': [
            ["requests", None, 'incremental']
        ]},
    'connection_status': {
        'options': [None, 'nginx Active Connections by Status', 'connections', 'status',
                    'nginx.connection_status', 'line'],
        'lines': [
            ["reading"],
            ["writing"],
            ["waiting", "idle"]
        ]},
    'connect_rate': {
        'options': [None, 'nginx Connections Rate', 'connections/s', 'connections rate',
                    'nginx.connect_rate', 'line'],
        'lines': [
            ["accepts", "accepted", "incremental"],
            ["handled", None, "incremental"]
        ]}
}


class Service(UrlService):
    def __init__(self, configuration=None, name=None):
        UrlService.__init__(self, configuration=configuration, name=name)
        self.url = self.configuration.get('url', 'http://localhost/stub_status')
        self.order = ORDER
        self.definitions = CHARTS

    def _get_data(self):
        """
        Format data received from http request
        :return: dict
        """
        try:
            raw = self._get_raw_data().split(" ")
            return {'active': int(raw[2]),
                    'requests': int(raw[9]),
                    'reading': int(raw[11]),
                    'writing': int(raw[13]),
                    'waiting': int(raw[15]),
                    'accepts': int(raw[7]),
                    'handled': int(raw[8])}
        except (ValueError, AttributeError):
            return None