confluent/confluent_client/bin/nodehealth

#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2015-2017 Lenovo
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import codecs
import optparse
import os
import signal
import sys

try:
    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
except AttributeError:
    pass
path = os.path.dirname(os.path.realpath(__file__))
path = os.path.realpath(os.path.join(path, '..', 'lib', 'python'))
if path.startswith('/opt'):
    sys.path.append(path)

import confluent.client as client

sys.stdout = codecs.getwriter('utf8')(sys.stdout)

argparser = optparse.OptionParser(usage="Usage: %prog <noderange>")
(options, args) = argparser.parse_args()
try:
    noderange = args[0]
except IndexError:
    argparser.print_help()
    sys.exit(1)


def main():
    global session, exitcode, healthbynode, healthexplanations, health, node, sensor, explanation
    session = client.Command()
    exitcode = 0
    healthbynode = {}
    healthexplanations = {}
    for health in session.read(
            '/noderange/{0}/health/hardware'.format(noderange)):
        if 'error' in health:
            sys.stderr.write(health['error'] + '\n')
            if 'errorcode' in health:
                exitcode |= health['errorcode']
            else:
                exitcode |= 1
            continue
        if 'databynode' not in health:
            continue
        health = health['databynode']
        for node in health:
            if 'error' in health[node]:
                sys.stderr.write('{0}: Error: {1}\n'.format(
                    node, health[node]['error']))
                exitcode |= 1
            if 'health' in health[node]:
                healthbynode[node] = health[node]['health']['value']
            if 'sensors' in health[node]:
                healthexplanations[node] = []
                for sensor in health[node]['sensors']:
                    explanation = sensor['name'] + ':'
                    if sensor['value'] is not None:
                        explanation += str(sensor['value'])
                        if sensor['units'] is not None:
                            explanation += sensor['units']
                        if sensor['states']:
                            explanation += ','
                    if sensor['states']:
                        explanation += ','.join(sensor['states'])
                    healthexplanations[node].append(explanation)
            if node in healthbynode and node in healthexplanations:
                if healthexplanations[node]:
                    print(u'{0}: {1} ({2})'.format(
                        node, healthbynode[node],
                        ','.join(healthexplanations[node])))
                else:
                    print('{0}: {1}'.format(node, healthbynode[node]))

try:
    main()
except KeyboardInterrupt:
    print('')
    sys.exit(0)