blob: 8b77a59bceda95eb806814d6cba528f2dd33ae0a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#!/usr/bin/env python
#
# Copyright (C) 2018 The Android Open Source Project
#
# 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 datetime
import webapp2
from webapp.src import vtslab_status as Status
from webapp.src.proto import model
from webapp.src.utils import logger
DEVICE_RESPONSE_TIMEOUT_SECONDS = 300
class PeriodicDeviceHeartBeat(webapp2.RequestHandler):
"""Main class for /tasks/device_heartbeat.
Used to find lost devices and change their status properly.
Attributes:
logger: Logger class
"""
logger = logger.Logger()
def get(self):
"""Generates an HTML page based on the task schedules kept in DB."""
self.logger.Clear()
device_query = model.DeviceModel.query(
model.DeviceModel.status !=
Status.DEVICE_STATUS_DICT["no-response"])
devices = device_query.fetch()
lost_devices = [
x for x in devices
if (datetime.datetime.now() - x.timestamp
).seconds >= DEVICE_RESPONSE_TIMEOUT_SECONDS
]
for device in lost_devices:
self.logger.Println("Device[{}] is not responding.".format(
device.serial))
device.status = Status.DEVICE_STATUS_DICT["no-response"]
device.put()
self.response.write(
"<pre>\n" + "\n".join(self.logger.Get()) + "\n</pre>")
|
