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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))