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# -*- coding: utf-8 -*-
# Description: tomcat netdata python.d module
# Author: Pawel Krupa (paulfantom)
# Python version higher than 2.7 is needed to run this module.
from base import UrlService
import xml.etree.ElementTree as ET # phone home...
#from xml.parsers.expat import errors
# 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 = ['accesses', 'volume', 'threads', 'jvm']
CHARTS = {
'accesses': {
'options': [None, "Requests", "requests/s", "statistics", "tomcat.accesses", "area"],
'lines': [
["accesses", None, 'incremental']
]},
'volume': {
'options': [None, "Volume", "KB/s", "volume", "tomcat.volume", "area"],
'lines': [
["volume", None, 'incremental', 1, 1024]
]},
'threads': {
'options': [None, "Threads", "current threads", "statistics", "tomcat.threads", "line"],
'lines': [
["current", None, "absolute"],
["busy", None, "absolute"]
]},
'jvm': {
'options': [None, "JVM Free Memory", "MB", "statistics", "tomcat.jvm", "area"],
'lines': [
["jvm", None, "absolute", 1, 1048576]
]}
}
class Service(UrlService):
def __init__(self, configuration=None, name=None):
UrlService.__init__(self, configuration=configuration, name=name)
if len(self.url) == 0:
self.url = "http://localhost:8080/manager/status?XML=true"
self.order = ORDER
self.definitions = CHARTS
self.port = 8080
def check(self):
if UrlService.check(self):
return True
# get port from url
self.port = 0
for i in self.url.split('/'):
try:
int(i[-1])
self.port = i.split(':')[-1]
break
except:
pass
if self.port == 0:
self.port = 80
test = self._get_data()
if test is None or len(test) == 0:
return False
else:
return True
def _get_data(self):
"""
Format data received from http request
:return: dict
"""
try:
raw = self._get_raw_data()
try:
data = ET.fromstring(raw)
except ET.ParseError as e:
# if e.code == errors.codes[errors.XML_ERROR_JUNK_AFTER_DOC_ELEMENT]:
if e.code == 9:
end = raw.find('</status>')
end += 9
raw = raw[:end]
self.debug(raw)
data = ET.fromstring(raw)
else:
raise Exception(e)
memory = data.find('./jvm/memory')
threads = data.find("./connector[@name='\"http-bio-" + str(self.port) + "\"']/threadInfo")
requests = data.find("./connector[@name='\"http-bio-" + str(self.port) + "\"']/requestInfo")
return {'accesses': requests.attrib['requestCount'],
'volume': requests.attrib['bytesSent'],
'current': threads.attrib['currentThreadCount'],
'busy': threads.attrib['currentThreadsBusy'],
'jvm': memory.attrib['free']}
except (ValueError, AttributeError) as e:
self.debug(str(e))
return None
except SyntaxError as e:
self.error("Tomcat module needs python 2.7 at least. Stopping")
self.debug(str(e))
except Exception as e:
self.debug(str(e))
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