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# -*- coding: utf-8 -*-
# Description: squid netdata python.d module
# Author: Pawel Krupa (paulfantom)
from base import SocketService
import select
# default module values (can be overridden per job in `config`)
# update_every = 2
priority = 60000
retries = 60
# charts order (can be overridden if you want less charts, or different order)
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 = {}
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 len(data) == 0:
self.error("no data received")
return None
else:
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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