mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-15 21:08:55 +00:00
72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
#!/usr/bin/env python
|
||
#
|
||
# Copyright (C) 2016 GNS3 Technologies Inc.
|
||
#
|
||
# This program is free software: you can redistribute it and/or modify
|
||
# it under the terms of the GNU General Public License as published by
|
||
# the Free Software Foundation, either version 3 of the License, or
|
||
# (at your option) any later version.
|
||
#
|
||
# This program is distributed in the hope that it will be useful,
|
||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
# GNU General Public License for more details.
|
||
#
|
||
# You should have received a copy of the GNU General Public License
|
||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
import asyncio
|
||
import psutil
|
||
import json
|
||
import psutil
|
||
|
||
|
||
class NotificationQueue(asyncio.Queue):
|
||
"""
|
||
Queue returned by the notification manager.
|
||
"""
|
||
|
||
def __init__(self):
|
||
super().__init__()
|
||
self._first = True
|
||
|
||
@asyncio.coroutine
|
||
def get(self, timeout):
|
||
"""
|
||
When timeout is expire we send a ping notification with server informations
|
||
"""
|
||
|
||
# At first get we return a ping so the client receive immediately data
|
||
if self._first:
|
||
self._first = False
|
||
return ("ping", self._getPing(), {})
|
||
|
||
try:
|
||
(action, msg, kwargs) = yield from asyncio.wait_for(super().get(), timeout)
|
||
except asyncio.futures.TimeoutError:
|
||
return ("ping", self._getPing(), {})
|
||
return (action, msg, kwargs)
|
||
|
||
def _getPing(self):
|
||
"""
|
||
Return the content of the ping notification
|
||
"""
|
||
msg = {}
|
||
# Non blocking call in order to get cpu usage. First call will return 0
|
||
msg["cpu_usage_percent"] = psutil.cpu_percent(interval=None)
|
||
msg["memory_usage_percent"] = psutil.virtual_memory().percent
|
||
return msg
|
||
|
||
@asyncio.coroutine
|
||
def get_json(self, timeout):
|
||
"""
|
||
Get a message as a JSON
|
||
"""
|
||
(action, msg, kwargs) = yield from self.get(timeout)
|
||
if hasattr(msg, "__json__"):
|
||
msg = {"action": action, "event": msg.__json__()}
|
||
else:
|
||
msg = {"action": action, "event": msg}
|
||
msg.update(kwargs)
|
||
return json.dumps(msg, sort_keys=True)
|