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##############################################################################
# Copyright (c) 2017 ZTE Corporation and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
from datetime import datetime
import json
import requests
import socket
from threading import Thread
import time
from identity_auth import get_session
from os_clients import nova_client
from monitor.base import BaseMonitor
class SampleMonitor(BaseMonitor):
event_type = "compute.host.down"
def __init__(self, conf, inspector_url, log):
super(SampleMonitor, self).__init__(conf, inspector_url, log)
self.session = get_session()
self.nova = nova_client(conf.nova_version, self.session)
self.hosts = self.nova.hypervisors.list(detailed=True)
self.pingers = []
def start(self):
self.log.info('sample monitor start......')
for host in self.hosts:
host_dict = host.__dict__
host_name = host_dict['hypervisor_hostname']
host_ip = host_dict['host_ip']
pinger = Pinger(host_name, host_ip, self, self.log)
pinger.start()
self.pingers.append(pinger)
def stop(self):
self.log.info('sample monitor stop......')
for pinger in self.pingers:
pinger.stop()
pinger.join()
del self.pingers
def report_error(self, hostname):
self.log.info('sample monitor report error......')
data = [
{
'id': 'monitor_sample_id1',
'time': datetime.now().isoformat(),
'type': self.event_type,
'details': {
'hostname': hostname,
'status': 'down',
'monitor': 'monitor_sample',
'monitor_event_id': 'monitor_sample_event1'
},
},
]
auth_token = self.session.get_token() if \
self.conf.inspector.type != 'sample' else None
headers = {
'Content-Type': 'application/json',
'Accept': 'application/json',
'X-Auth-Token': auth_token,
}
url = '%s%s' % (self.inspector_url, 'events') \
if self.inspector_url.endswith('/') else \
'%s%s' % (self.inspector_url, '/events')
requests.put(url, data=json.dumps(data), headers=headers)
class Pinger(Thread):
interval = 0.1 # second
timeout = 0.1 # second
ICMP_ECHO_MESSAGE = '\x08\x00\xf7\xff\x00\x00\x00\x00'
def __init__(self, host_name, host_ip, monitor, log):
Thread.__init__(self)
self.monitor = monitor
self.hostname = host_name
self.ip_addr = host_ip or socket.gethostbyname(self.hostname)
self.log = log
self._stopped = False
def run(self):
while True:
if self._stopped:
return
self._run()
time.sleep(self.interval)
def stop(self):
self.log.info("Stopping Pinger host_name(%s), host_ip(%s)"
% (self.hostname, self.ip_addr))
self._stopped = True
def _run(self):
self.log.info("Starting Pinger host_name(%s), host_ip(%s)"
% (self.hostname, self.ip_addr))
sock = socket.socket(socket.AF_INET, socket.SOCK_RAW,
socket.IPPROTO_ICMP)
sock.settimeout(self.timeout)
while True:
try:
sock.sendto(self.ICMP_ECHO_MESSAGE.encode(), (self.ip_addr, 0))
sock.recv(4096)
except socket.timeout:
self.log.info("doctor monitor detected at %s" % time.time())
self.monitor.report_error(self.hostname)
self.log.info("ping timeout, quit monitoring...")
self._stopped = True
return
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