| # Copyright 2015 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Network monitoring health checks for moblab.""" |
| |
| from __future__ import print_function |
| |
| import netifaces |
| |
| from chromite.lib import cros_build_lib |
| |
| |
| class InternetAccess(object): |
| """Verifies that moblab can connect to the internet.""" |
| |
| DNS = ['4.2.2.2', '4.2.2.3', '4.2.2.4', '8.8.4.4', '8.8.8.8'] |
| PING_WAIT_SEC = '3' |
| PING_COUNT = '3' |
| |
| def Check(self): |
| """Verify that this moblab device has internet access. |
| |
| We test internet access by trying to connect to a handful |
| of public DNS addresses that would be unlikely be down, |
| or even to be down all at the same time. |
| |
| Returns: |
| 0 if this moblab device successfully connects to at least |
| one of DNS. |
| -1 if moblab cannot connect to any of DNS. |
| """ |
| for dns in self.DNS: |
| cmd = ['ping', '-W', self.PING_WAIT_SEC, '-c', self.PING_COUNT, dns] |
| result = cros_build_lib.RunCommand(cmd, error_code_ok=True) |
| |
| if not result.returncode: |
| return 0 |
| |
| return -1 |
| |
| def Diagnose(self, errcode): |
| if -1 == errcode: |
| return ('Moblab is having trouble connecting to the internet.' |
| ' Please double-check your physical connections.', |
| []) |
| |
| return ('Unknown error reached with error code: %s' % errcode, []) |
| |
| |
| class UsbEthernet(object): |
| """Verifies that moblab has a USB ethernet device connected.""" |
| |
| def Check(self): |
| """Verify that a USB ethernet device is present. |
| |
| Returns: |
| 0 if a USB ethernet device exists. |
| -1 if no USB ethernet device is detected. |
| """ |
| # External ethernet will be either eth0 or eth1. If a usb ethernet |
| # device is detected, we should have more than one eth* interface. |
| eth_ifaces = [] |
| for iface in netifaces.interfaces(): |
| if 'eth' in iface: |
| eth_ifaces.append(iface) |
| |
| if len(eth_ifaces) > 1: |
| return 0 |
| |
| return -1 |
| |
| def Diagnose(self, errcode): |
| if -1 == errcode: |
| return ('No USB ethernet device detected. This may indicate that' |
| ' no DUT (or some other important device) is not connected.', |
| []) |
| |
| return ('Unknown error reached with error code: %s' % errcode, []) |
