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#
# Copyright 2016 NEC Corporation.
#
# 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 argparse
from flask import Flask
from flask import request
import json
import os
import novaclient.client as novaclient
class DoctorInspectorSample(object):
nova_api_version = 2.11
def __init__(self):
self.nova = novaclient.Client(self.nova_api_version,
os.environ['OS_USERNAME'],
os.environ['OS_PASSWORD'],
os.environ['OS_TENANT_NAME'],
os.environ['OS_AUTH_URL'],
connection_pool=True)
# check nova is available
self.nova.servers.list(detailed=False)
def disable_compute_host(self, hostname):
opts = {'all_tenants': True, 'host': hostname}
for server in self.nova.servers.list(detailed=False, search_opts=opts):
self.nova.servers.reset_state(server, 'error')
self.nova.services.force_down(hostname, 'nova-compute', True)
app = Flask(__name__)
inspector = DoctorInspectorSample()
@app.route('/events', methods=['POST'])
def event_posted():
app.logger.debug('event posted')
app.logger.debug('inspector = %s' % inspector)
app.logger.debug('received data = %s' % request.data)
d = json.loads(request.data)
hostname = d['hostname']
event_type = d['type']
if event_type == 'compute.host.down':
inspector.disable_compute_host(hostname)
return "OK"
def get_args():
parser = argparse.ArgumentParser(description='Doctor Sample Monitor')
parser.add_argument('port', metavar='PORT', type=int, nargs='?',
help='a port for inspectpr')
return parser.parse_args()
def main():
args = get_args()
app.run(port=args.port, debug=True)
if __name__ == '__main__':
main()
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