check_apache_drill_status.py

#!/usr/bin/env python
#  vim:ts=4:sts=4:sw=4:et
#
#  Author: Hari Sekhon
#  Date: 2016-02-18 18:44:59 +0000 (Thu, 18 Feb 2016)
#
#  https://github.com/harisekhon/nagios-plugins
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback # pylint: disable=line-too-long
#
#  https://www.linkedin.com/in/harisekhon
#

"""

Nagios Plugin to check Apache Drill's status page

The API has limitations around reflecting Drill issues however, see:

https://issues.apache.org/jira/browse/DRILL-5990
https://issues.apache.org/jira/browse/DRILL-6406

Recommend if running a cluster to also use:

    ./check_apache_drill_cluster_node.py - for a specific node
    ./check_apache_drill_cluster_nodes.py - to check minimum number of nodes in cluster
    ./check_apache_drill_cluster_nodes_offline.py - to check for number of down nodes

Tested on Apache Drill 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15

"""

from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals

import os
import re
import sys
import traceback
try:
    from bs4 import BeautifulSoup
except ImportError:
    print(traceback.format_exc(), end='')
    sys.exit(4)
libdir = os.path.abspath(os.path.join(os.path.dirname(__file__), 'pylib'))
sys.path.append(libdir)
try:
    # pylint: disable=wrong-import-position
    from harisekhon.utils import qquit
    from harisekhon.utils import support_msg
    from harisekhon import StatusNagiosPlugin
    from harisekhon import RequestHandler
except ImportError:
    print(traceback.format_exc(), end='')
    sys.exit(4)

__author__ = 'Hari Sekhon'
__version__ = '0.2.2'


class CheckApacheDrillStatus(StatusNagiosPlugin):

    def __init__(self):
        # Python 2.x
        super(CheckApacheDrillStatus, self).__init__()
        # Python 3.x
        # super().__init__()
        self.name = 'Apache Drill'
        self.default_port = 8047

    def get_status(self):
        url = 'http://{0}:{1}/status'.format(self.host, self.port)
        req = RequestHandler().get(url)
        status = self.parse(req)
        return status

    def parse(self, req):
        soup = BeautifulSoup(req.content, 'html.parser')
        # if log.isEnabledFor(logging.DEBUG):
        #     log.debug("BeautifulSoup prettified:\n%s\n%s", soup.prettify(), '='*80)
        status = None
        try:
            status = soup.find('div', {'class': 'alert alert-success'}).get_text().strip()
        except (AttributeError, TypeError):
            qquit('UNKNOWN', 'failed to parse Apache Drill status page. %s' % support_msg())
        # Found a STARTUP status in cluster nodes state but looking at the code for /status is looks like Running is all there is, or results for this endpoint are not properly undocumented - see https://issues.apache.org/jira/browse/DRILL-6407
        #if status in ("Startup", "Initializing"):
        #    self.warning()
        if re.match('^Running!?$', status):
            self.ok()
        else:
            self.critical()
        return status


if __name__ == '__main__':
    CheckApacheDrillStatus().main()