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# -*- coding: utf-8 -*-
# Description: squid netdata python.d module
# Author: Pawel Krupa (paulfantom)
# SPDX-License-Identifier: GPL-3.0-or-later
from bases.FrameworkServices.SocketService import SocketService
ORDER = [
'clients_net',
'clients_requests',
'servers_net',
'servers_requests',
]
CHARTS = {
'clients_net': {
'options': [None, 'Squid Client Bandwidth', 'kilobits/s', 'clients', 'squid.clients_net', 'area'],
'lines': [
['client_http_kbytes_in', 'in', 'incremental', 8, 1],
['client_http_kbytes_out', 'out', 'incremental', -8, 1],
['client_http_hit_kbytes_out', 'hits', 'incremental', -8, 1]
]
},
'clients_requests': {
'options': [None, 'Squid Client Requests', 'requests/s', 'clients', 'squid.clients_requests', 'line'],
'lines': [
['client_http_requests', 'requests', 'incremental'],
['client_http_hits', 'hits', 'incremental'],
['client_http_errors', 'errors', 'incremental', -1, 1]
]
},
'servers_net': {
'options': [None, 'Squid Server Bandwidth', 'kilobits/s', 'servers', 'squid.servers_net', 'area'],
'lines': [
['server_all_kbytes_in', 'in', 'incremental', 8, 1],
['server_all_kbytes_out', 'out', 'incremental', -8, 1]
]
},
'servers_requests': {
'options': [None, 'Squid Server Requests', 'requests/s', 'servers', 'squid.servers_requests', 'line'],
'lines': [
['server_all_requests', 'requests', 'incremental'],
['server_all_errors', 'errors', 'incremental', -1, 1]
]
}
}
class Service(SocketService):
def __init__(self, configuration=None, name=None):
SocketService.__init__(self, configuration=configuration, name=name)
self._keep_alive = True
self.request = ''
self.host = 'localhost'
self.port = 3128
self.order = ORDER
self.definitions = CHARTS
def _get_data(self):
"""
Get data via http request
:return: dict
"""
response = self._get_raw_data()
data = dict()
try:
raw = ''
for tmp in response.split('\r\n'):
if tmp.startswith('sample_time'):
raw = tmp
break
if raw.startswith('<'):
self.error('invalid data received')
return None
for row in raw.split('\n'):
if row.startswith(('client', 'server.all')):
tmp = row.split('=')
data[tmp[0].replace('.', '_').strip(' ')] = int(tmp[1])
except (ValueError, AttributeError, TypeError):
self.error('invalid data received')
return None
if not data:
self.error('no data received')
return None
return data
def _check_raw_data(self, data):
header = data[:1024].lower()
if 'connection: keep-alive' in header:
self._keep_alive = True
else:
self._keep_alive = False
if data[-7:] == '\r\n0\r\n\r\n' and 'transfer-encoding: chunked' in header: # HTTP/1.1 response
self.debug('received full response from squid')
return True
self.debug('waiting more data from squid')
return False
def check(self):
"""
Parse essential configuration, autodetect squid configuration (if needed), and check if data is available
:return: boolean
"""
self._parse_config()
# format request
req = self.request.decode()
if not req.startswith('GET'):
req = 'GET ' + req
if not req.endswith(' HTTP/1.1\r\n\r\n'):
req += ' HTTP/1.1\r\n\r\n'
self.request = req.encode()
if self._get_data() is not None:
return True
else:
return False
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