netdata/python.d/httpcheck.chart.py at master · absalan/netdata · GitHub

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# -*- coding: utf-8 -*-

# Description: http check netdata python.d module

# Original Author: ccremer (github.com/ccremer)

import urllib3

import re

try:

from time import monotonic as time

except ImportError:

from time import time

from bases.FrameworkServices.UrlService import UrlService

# default module values (can be overridden per job in `config`)

update_every = 3

priority = 60000

retries = 60

# Response

HTTP_RESPONSE_TIME = 'time'

HTTP_RESPONSE_LENGTH = 'length'

# Status dimensions

HTTP_SUCCESS = 'success'

HTTP_BAD_CONTENT = 'bad_content'

HTTP_BAD_STATUS = 'bad_status'

HTTP_TIMEOUT = 'timeout'

HTTP_NO_CONNECTION = 'no_connection'

ORDER = ['response_time', 'response_length', 'status']

CHARTS = {

'response_time': {

'options': [None, 'HTTP response time', 'ms', 'response', 'httpcheck.responsetime', 'line'],

'lines': [

[HTTP_RESPONSE_TIME, 'time', 'absolute', 100, 1000]

]},

'response_length': {

'options': [None, 'HTTP response body length', 'characters', 'response', 'httpcheck.responselength', 'line'],

'lines': [

[HTTP_RESPONSE_LENGTH, 'length', 'absolute']

]},

'status': {

'options': [None, 'HTTP status', 'boolean', 'status', 'httpcheck.status', 'line'],

'lines': [

[HTTP_SUCCESS, 'success', 'absolute'],

[HTTP_BAD_CONTENT, 'bad content', 'absolute'],

[HTTP_BAD_STATUS, 'bad status', 'absolute'],

[HTTP_TIMEOUT, 'timeout', 'absolute'],

[HTTP_NO_CONNECTION, 'no connection', 'absolute']

]}

}

class Service(UrlService):

def __init__(self, configuration=None, name=None):

UrlService.__init__(self, configuration=configuration, name=name)

pattern = self.configuration.get('regex')

self.regex = re.compile(pattern) if pattern else None

self.status_codes_accepted = self.configuration.get('status_accepted', [200])

self.follow_redirect = self.configuration.get('redirect', True)

self.order = ORDER

self.definitions = CHARTS

def _get_data(self):

"""

Format data received from http request

:return: dict

"""

data = dict()

data[HTTP_SUCCESS] = 0

data[HTTP_BAD_CONTENT] = 0

data[HTTP_BAD_STATUS] = 0

data[HTTP_TIMEOUT] = 0

data[HTTP_NO_CONNECTION] = 0

url = self.url

try:

start = time()

status, content = self._get_raw_data_with_status(retries=1 if self.follow_redirect else False,

redirect=self.follow_redirect)

diff = time() - start

data[HTTP_RESPONSE_TIME] = max(round(diff * 10000), 0)

self.debug('Url: {url}. Host responded with status code {code} in {diff} s'.format(

url=url, code=status, diff=diff

))

self.process_response(content, data, status)

except urllib3.exceptions.NewConnectionError as error:

self.debug("Connection failed: {url}. Error: {error}".format(url=url, error=error))

data[HTTP_NO_CONNECTION] = 1

except (urllib3.exceptions.TimeoutError, urllib3.exceptions.PoolError) as error:

self.debug("Connection timed out: {url}. Error: {error}".format(url=url, error=error))

data[HTTP_TIMEOUT] = 1

except urllib3.exceptions.HTTPError as error:

self.debug("Connection failed: {url}. Error: {error}".format(url=url, error=error))

data[HTTP_NO_CONNECTION] = 1

except (TypeError, AttributeError) as error:

self.error('Url: {url}. Error: {error}'.format(url=url, error=error))

return None

return data

def process_response(self, content, data, status):

data[HTTP_RESPONSE_LENGTH] = len(content)

self.debug('Content: \n\n{content}\n'.format(content=content))

if status in self.status_codes_accepted:

if self.regex and self.regex.search(content) is None:

self.debug("No match for regex '{regex}' found".format(regex=self.regex.pattern))

data[HTTP_BAD_CONTENT] = 1

else:

data[HTTP_SUCCESS] = 1

else:

data[HTTP_BAD_STATUS] = 1

netdata/python.d/httpcheck.chart.py at master · absalan/netdata · GitHub

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