blob: 86ac46315e5e93ee0e48005990962b3bec53cdec [file] [log] [blame]
# Copyright (c) 2013 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.
from autotest_lib.client.common_lib import error
def get_datetime_float(host):
Returns host's system time in seconds since epoch.
@param host: an Autotest host object.
@returns a float, timestamp since epoch in <seconds>.<nanoseconds>.
@raises TestError: if error reading datetime or converting its value
from string to float.
r ='date +%s.%N')
if r.exit_status > 0:
err = ('Error reading datetime from capturer (%r): %r' %
(r.exit_status, r.stderr))
raise error.TestError(err)
return float(r.stdout)
except ValueError as e:
raise error.TestError('Error converting datetime string: %r', e)