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diff --git a/compass-deck/bin/poll_switch.py b/compass-deck/bin/poll_switch.py
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+#!/usr/bin/env python
+#
+# Copyright 2014 Huawei Technologies Co. Ltd
+#
+# 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.
+
+"""main script to poll machines which is connected to the switches."""
+import functools
+import logging
+import os
+import sys
+
+
+current_dir = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(current_dir)
+
+
+import switch_virtualenv
+
+import lockfile
+from multiprocessing import Pool
+
+from compass.actions import poll_switch
+from compass.actions import util
+from compass.db.api import database
+from compass.db.api import switch as switch_api
+from compass.db.api import user as user_api
+from compass.tasks.client import celery
+from compass.utils import daemonize
+from compass.utils import flags
+from compass.utils import logsetting
+from compass.utils import setting_wrapper as setting
+
+
+flags.add('switch_ips',
+ help='comma seperated switch ips',
+ default='')
+flags.add_bool('async',
+ help='ryn in async mode',
+ default=True)
+flags.add('thread_pool_size', type='int',
+ help='thread pool size when run in noasync mode',
+ default=4)
+flags.add('run_interval', type='int',
+ help='run interval in seconds',
+ default=setting.POLLSWITCH_INTERVAL)
+
+
+def pollswitches(switch_ips):
+ """poll switch."""
+ user = user_api.get_user_object(setting.COMPASS_ADMIN_EMAIL)
+ poll_switches = []
+ all_switches = dict([
+ (switch['ip'], switch['credentials'])
+ for switch in switch_api.list_switches(user=user)
+ ])
+ if switch_ips:
+ poll_switches = dict([
+ (switch_ip, all_switches[switch_ip])
+ for switch_ip in switch_ips
+ if switch_ip in all_switches
+ ])
+ else:
+ poll_switches = all_switches
+
+ if flags.OPTIONS.async:
+ for switch_ip, switch_credentials in poll_switches.items():
+ celery.send_task(
+ 'compass.tasks.pollswitch',
+ (user.email, switch_ip, switch_credentials)
+ )
+
+ else:
+ try:
+ pool = Pool(processes=flags.OPTIONS.thread_pool_size)
+ for switch_ip, switch_credentials in poll_switches.items():
+ pool.apply_async(
+ poll_switch.poll_switch,
+ (user.email, switch_ip, switch_credentials)
+ )
+ pool.close()
+ pool.join()
+ except Exception as error:
+ logging.error('failed to poll switches %s',
+ poll_switches)
+ logging.exception(error)
+
+
+if __name__ == '__main__':
+ flags.init()
+ logsetting.init()
+ database.init()
+ logging.info('run poll_switch')
+ daemonize.daemonize(
+ functools.partial(
+ pollswitches,
+ [switch_ip
+ for switch_ip in flags.OPTIONS.switch_ips.split(',')
+ if switch_ip]),
+ flags.OPTIONS.run_interval,
+ pidfile=lockfile.FileLock('/var/run/poll_switch.pid'),
+ stderr=open('/tmp/poll_switch_err.log', 'w+'),
+ stdout=open('/tmp/poll_switch_out.log', 'w+'))