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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
# Copyright 2015 Intel Corporation.
#
# 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.
"""Class wrapper for controlling a TestPMD instance.
Wraps ``testpmd`` process.
"""
import os
import logging
import time
import pexpect
from conf import settings
from tools import tasks
_TESTPMD_PROMPT = 'Done'
_LOG_FILE_VSWITCHD = os.path.join(
settings.getValue('LOG_DIR'), settings.getValue('LOG_FILE_VSWITCHD'))
class TestPMDProcess(tasks.Process):
"""Class wrapper for controlling a TestPMD instance.
Wraps ``testpmd`` process.
"""
_logfile = _LOG_FILE_VSWITCHD
_proc_name = 'testpmd'
def __init__(self, timeout=30, testpmd_args=None, expected_cmd=None):
"""Initialise the wrapper with a specific start timeout and extra
parameters.
:param timeout: Timeout to wait for application to start.
:param testpmd_args: Command line parameters for testpmd.
:returns: None
"""
self._logger = logging.getLogger(__name__)
self._timeout = timeout
self._expect = expected_cmd
if not self._expect:
self._expect = _TESTPMD_PROMPT
testpmd_args = testpmd_args or []
self._cmd = ['sudo', '-E', settings.getValue('TOOLS')['testpmd']] + testpmd_args
# startup/shutdown
def start(self):
""" Start ``testpmd`` instance.
:returns: None
:raises: pexpect.EOF, pexpect.TIMEOUT
"""
try:
super(TestPMDProcess, self).start()
self.relinquish()
except (pexpect.EOF, pexpect.TIMEOUT) as exc:
logging.error("TestPMD start failed.")
raise exc
def kill(self, signal='-15', sleep=2):
"""Kill ``testpmd`` instance if it is alive.
:returns: None
"""
self._logger.info('Killing testpmd...')
super(TestPMDProcess, self).kill(signal, sleep)
# helper functions
def send(self, cmd, delay=0):
"""
Send ``cmd`` with no wait.
Useful for asynchronous commands.
:param cmd: Command to send to guest.
:param timeout: Delay to wait after sending command before returning.
:returns: None
"""
self._logger.debug(cmd)
self._child.sendline(cmd)
time.sleep(delay)
def wait(self, msg=_TESTPMD_PROMPT, timeout=30):
"""
Wait for ``msg``.
:param msg: Message to wait for from guest.
:param timeout: Time to wait for message.
:returns: None
"""
self._child.expect(msg, timeout=timeout)
|
