26cd0242c9
Raise a new UnexpectedPacketErrror, when a packet is captured unexpectedly. This pretty-prints a terse description of said packet. Type: improvement Signed-off-by: Klement Sekera <klement.sekera@gmail.com> Change-Id: Ibac19fc5bbd82a150fec3c90940a37af6344fd4f
1831 lines
68 KiB
Python
1831 lines
68 KiB
Python
#!/usr/bin/env python3
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from __future__ import print_function
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import logging
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import sys
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import os
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import select
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import signal
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import subprocess
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import unittest
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import re
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import time
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import faulthandler
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import random
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import copy
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import platform
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import shutil
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from collections import deque
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from threading import Thread, Event
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from inspect import getdoc, isclass
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from traceback import format_exception
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from logging import FileHandler, DEBUG, Formatter
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from enum import Enum
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from abc import ABC, abstractmethod
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from struct import pack, unpack
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import scapy.compat
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from scapy.packet import Raw, Packet
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from config import config, available_cpus, num_cpus, max_vpp_cpus
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import hook as hookmodule
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from vpp_pg_interface import VppPGInterface
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from vpp_sub_interface import VppSubInterface
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from vpp_lo_interface import VppLoInterface
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from vpp_bvi_interface import VppBviInterface
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from vpp_papi_provider import VppPapiProvider
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from vpp_papi import VppEnum
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import vpp_papi
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from vpp_papi.vpp_stats import VPPStats
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from vpp_papi.vpp_transport_socket import VppTransportSocketIOError
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from log import RED, GREEN, YELLOW, double_line_delim, single_line_delim, \
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get_logger, colorize
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from vpp_object import VppObjectRegistry
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from util import ppp, is_core_present
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from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
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from scapy.layers.inet6 import ICMPv6DestUnreach, ICMPv6EchoRequest
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from scapy.layers.inet6 import ICMPv6EchoReply
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logger = logging.getLogger(__name__)
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# Set up an empty logger for the testcase that can be overridden as necessary
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null_logger = logging.getLogger('VppTestCase')
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null_logger.addHandler(logging.NullHandler())
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PASS = 0
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FAIL = 1
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ERROR = 2
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SKIP = 3
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TEST_RUN = 4
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SKIP_CPU_SHORTAGE = 5
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if config.debug_framework:
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import debug_internal
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"""
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Test framework module.
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The module provides a set of tools for constructing and running tests and
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representing the results.
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"""
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class VppDiedError(Exception):
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""" exception for reporting that the subprocess has died."""
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signals_by_value = {v: k for k, v in signal.__dict__.items() if
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k.startswith('SIG') and not k.startswith('SIG_')}
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def __init__(self, rv=None, testcase=None, method_name=None):
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self.rv = rv
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self.signal_name = None
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self.testcase = testcase
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self.method_name = method_name
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try:
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self.signal_name = VppDiedError.signals_by_value[-rv]
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except (KeyError, TypeError):
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pass
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if testcase is None and method_name is None:
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in_msg = ''
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else:
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in_msg = ' while running %s.%s' % (testcase, method_name)
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if self.rv:
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msg = "VPP subprocess died unexpectedly%s with return code: %d%s."\
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% (in_msg, self.rv, ' [%s]' %
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(self.signal_name if
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self.signal_name is not None else ''))
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else:
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msg = "VPP subprocess died unexpectedly%s." % in_msg
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super(VppDiedError, self).__init__(msg)
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class _PacketInfo(object):
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"""Private class to create packet info object.
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Help process information about the next packet.
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Set variables to default values.
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"""
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#: Store the index of the packet.
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index = -1
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#: Store the index of the source packet generator interface of the packet.
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src = -1
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#: Store the index of the destination packet generator interface
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#: of the packet.
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dst = -1
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#: Store expected ip version
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ip = -1
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#: Store expected upper protocol
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proto = -1
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#: Store the copy of the former packet.
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data = None
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def __eq__(self, other):
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index = self.index == other.index
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src = self.src == other.src
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dst = self.dst == other.dst
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data = self.data == other.data
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return index and src and dst and data
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def pump_output(testclass):
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""" pump output from vpp stdout/stderr to proper queues """
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stdout_fragment = ""
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stderr_fragment = ""
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while not testclass.pump_thread_stop_flag.is_set():
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readable = select.select([testclass.vpp.stdout.fileno(),
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testclass.vpp.stderr.fileno(),
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testclass.pump_thread_wakeup_pipe[0]],
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[], [])[0]
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if testclass.vpp.stdout.fileno() in readable:
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read = os.read(testclass.vpp.stdout.fileno(), 102400)
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if len(read) > 0:
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split = read.decode('ascii',
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errors='backslashreplace').splitlines(True)
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if len(stdout_fragment) > 0:
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split[0] = "%s%s" % (stdout_fragment, split[0])
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if len(split) > 0 and split[-1].endswith("\n"):
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limit = None
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else:
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limit = -1
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stdout_fragment = split[-1]
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testclass.vpp_stdout_deque.extend(split[:limit])
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if not config.cache_vpp_output:
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for line in split[:limit]:
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testclass.logger.info(
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"VPP STDOUT: %s" % line.rstrip("\n"))
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if testclass.vpp.stderr.fileno() in readable:
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read = os.read(testclass.vpp.stderr.fileno(), 102400)
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if len(read) > 0:
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split = read.decode('ascii',
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errors='backslashreplace').splitlines(True)
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if len(stderr_fragment) > 0:
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split[0] = "%s%s" % (stderr_fragment, split[0])
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if len(split) > 0 and split[-1].endswith("\n"):
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limit = None
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else:
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limit = -1
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stderr_fragment = split[-1]
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testclass.vpp_stderr_deque.extend(split[:limit])
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if not config.cache_vpp_output:
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for line in split[:limit]:
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testclass.logger.error(
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"VPP STDERR: %s" % line.rstrip("\n"))
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# ignoring the dummy pipe here intentionally - the
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# flag will take care of properly terminating the loop
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def _is_platform_aarch64():
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return platform.machine() == 'aarch64'
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is_platform_aarch64 = _is_platform_aarch64()
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class KeepAliveReporter(object):
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"""
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Singleton object which reports test start to parent process
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"""
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_shared_state = {}
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def __init__(self):
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self.__dict__ = self._shared_state
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self._pipe = None
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@property
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def pipe(self):
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return self._pipe
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@pipe.setter
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def pipe(self, pipe):
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if self._pipe is not None:
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raise Exception("Internal error - pipe should only be set once.")
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self._pipe = pipe
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def send_keep_alive(self, test, desc=None):
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"""
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Write current test tmpdir & desc to keep-alive pipe to signal liveness
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"""
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if self.pipe is None:
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# if not running forked..
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return
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if isclass(test):
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desc = '%s (%s)' % (desc, unittest.util.strclass(test))
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else:
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desc = test.id()
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self.pipe.send((desc, config.vpp, test.tempdir, test.vpp.pid))
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class TestCaseTag(Enum):
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# marks the suites that must run at the end
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# using only a single test runner
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RUN_SOLO = 1
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# marks the suites broken on VPP multi-worker
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FIXME_VPP_WORKERS = 2
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# marks the suites broken when ASan is enabled
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FIXME_ASAN = 3
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def create_tag_decorator(e):
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def decorator(cls):
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try:
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cls.test_tags.append(e)
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except AttributeError:
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cls.test_tags = [e]
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return cls
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return decorator
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tag_run_solo = create_tag_decorator(TestCaseTag.RUN_SOLO)
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tag_fixme_vpp_workers = create_tag_decorator(TestCaseTag.FIXME_VPP_WORKERS)
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tag_fixme_asan = create_tag_decorator(TestCaseTag.FIXME_ASAN)
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class DummyVpp:
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returncode = None
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pid = 0xcafebafe
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def poll(self):
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pass
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def terminate(self):
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pass
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class CPUInterface(ABC):
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cpus = []
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skipped_due_to_cpu_lack = False
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@classmethod
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@abstractmethod
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def get_cpus_required(cls):
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pass
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@classmethod
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def assign_cpus(cls, cpus):
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cls.cpus = cpus
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class VppTestCase(CPUInterface, unittest.TestCase):
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"""This subclass is a base class for VPP test cases that are implemented as
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classes. It provides methods to create and run test case.
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"""
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extra_vpp_statseg_config = ""
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extra_vpp_punt_config = []
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extra_vpp_plugin_config = []
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logger = null_logger
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vapi_response_timeout = 5
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remove_configured_vpp_objects_on_tear_down = True
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@property
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def packet_infos(self):
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"""List of packet infos"""
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return self._packet_infos
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@classmethod
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def get_packet_count_for_if_idx(cls, dst_if_index):
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"""Get the number of packet info for specified destination if index"""
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if dst_if_index in cls._packet_count_for_dst_if_idx:
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return cls._packet_count_for_dst_if_idx[dst_if_index]
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else:
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return 0
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@classmethod
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def has_tag(cls, tag):
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""" if the test case has a given tag - return true """
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try:
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return tag in cls.test_tags
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except AttributeError:
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pass
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return False
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@classmethod
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def is_tagged_run_solo(cls):
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""" if the test case class is timing-sensitive - return true """
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return cls.has_tag(TestCaseTag.RUN_SOLO)
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@classmethod
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def skip_fixme_asan(cls):
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""" if @tag_fixme_asan & ASan is enabled - mark for skip """
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if cls.has_tag(TestCaseTag.FIXME_ASAN):
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vpp_extra_cmake_args = os.environ.get('VPP_EXTRA_CMAKE_ARGS', '')
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if 'DVPP_ENABLE_SANITIZE_ADDR=ON' in vpp_extra_cmake_args:
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cls = unittest.skip("Skipping @tag_fixme_asan tests")(cls)
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@classmethod
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def instance(cls):
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"""Return the instance of this testcase"""
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return cls.test_instance
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@classmethod
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def set_debug_flags(cls, d):
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cls.gdbserver_port = 7777
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cls.debug_core = False
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cls.debug_gdb = False
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cls.debug_gdbserver = False
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cls.debug_all = False
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cls.debug_attach = False
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if d is None:
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return
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dl = d.lower()
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if dl == "core":
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cls.debug_core = True
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elif dl == "gdb" or dl == "gdb-all":
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cls.debug_gdb = True
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elif dl == "gdbserver" or dl == "gdbserver-all":
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cls.debug_gdbserver = True
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elif dl == "attach":
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cls.debug_attach = True
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else:
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raise Exception("Unrecognized DEBUG option: '%s'" % d)
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if dl == "gdb-all" or dl == "gdbserver-all":
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cls.debug_all = True
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@classmethod
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def get_vpp_worker_count(cls):
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if not hasattr(cls, "vpp_worker_count"):
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if cls.has_tag(TestCaseTag.FIXME_VPP_WORKERS):
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cls.vpp_worker_count = 0
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else:
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cls.vpp_worker_count = config.vpp_worker_count
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return cls.vpp_worker_count
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@classmethod
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def get_cpus_required(cls):
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return 1 + cls.get_vpp_worker_count()
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@classmethod
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def setUpConstants(cls):
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""" Set-up the test case class based on environment variables """
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cls.step = config.step
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cls.plugin_path = ":".join(config.vpp_plugin_dir)
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cls.test_plugin_path = ":".join(config.vpp_test_plugin_dir)
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cls.extern_plugin_path = ":".join(config.extern_plugin_dir)
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debug_cli = ""
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if cls.step or cls.debug_gdb or cls.debug_gdbserver:
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debug_cli = "cli-listen localhost:5002"
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size = re.search(r"\d+[gG]", config.coredump_size)
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if size:
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coredump_size = f"coredump-size {config.coredump_size}".lower()
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else:
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coredump_size = "coredump-size unlimited"
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default_variant = config.variant
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if default_variant is not None:
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default_variant = "defaults { %s 100 }" % default_variant
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else:
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default_variant = ""
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api_fuzzing = config.api_fuzz
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if api_fuzzing is None:
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api_fuzzing = 'off'
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cls.vpp_cmdline = [
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config.vpp,
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"unix", "{", "nodaemon", debug_cli, "full-coredump",
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coredump_size, "runtime-dir", cls.tempdir, "}",
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"api-trace", "{", "on", "}",
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"api-segment", "{", "prefix", cls.get_api_segment_prefix(), "}",
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"cpu", "{", "main-core", str(cls.cpus[0]), ]
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if cls.extern_plugin_path not in (None, ""):
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cls.extra_vpp_plugin_config.append(
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"add-path %s" % cls.extern_plugin_path)
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if cls.get_vpp_worker_count():
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cls.vpp_cmdline.extend([
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"corelist-workers", ",".join([str(x) for x in cls.cpus[1:]])])
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cls.vpp_cmdline.extend([
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"}",
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"physmem", "{", "max-size", "32m", "}",
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"statseg", "{", "socket-name", cls.get_stats_sock_path(),
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cls.extra_vpp_statseg_config, "}",
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"socksvr", "{", "socket-name", cls.get_api_sock_path(), "}",
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"node { ", default_variant, "}",
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"api-fuzz {", api_fuzzing, "}",
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"plugins", "{", "plugin", "dpdk_plugin.so", "{", "disable", "}",
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"plugin", "rdma_plugin.so", "{", "disable", "}",
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"plugin", "lisp_unittest_plugin.so", "{", "enable", "}",
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"plugin", "unittest_plugin.so", "{", "enable", "}"
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] + cls.extra_vpp_plugin_config + ["}", ])
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if cls.extra_vpp_punt_config is not None:
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cls.vpp_cmdline.extend(cls.extra_vpp_punt_config)
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if not cls.debug_attach:
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cls.logger.info("vpp_cmdline args: %s" % cls.vpp_cmdline)
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cls.logger.info("vpp_cmdline: %s" % " ".join(cls.vpp_cmdline))
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@classmethod
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def wait_for_enter(cls):
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if cls.debug_gdbserver:
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print(double_line_delim)
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print("Spawned GDB server with PID: %d" % cls.vpp.pid)
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elif cls.debug_gdb:
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print(double_line_delim)
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print("Spawned VPP with PID: %d" % cls.vpp.pid)
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else:
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cls.logger.debug("Spawned VPP with PID: %d" % cls.vpp.pid)
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return
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print(single_line_delim)
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print("You can debug VPP using:")
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if cls.debug_gdbserver:
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print(f"sudo gdb {config.vpp} "
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f"-ex 'target remote localhost:{cls.gdbserver_port}'")
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print("Now is the time to attach gdb by running the above "
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"command, set up breakpoints etc., then resume VPP from "
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"within gdb by issuing the 'continue' command")
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cls.gdbserver_port += 1
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elif cls.debug_gdb:
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print(f"sudo gdb {config.vpp} -ex 'attach {cls.vpp.pid}'")
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print("Now is the time to attach gdb by running the above "
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"command and set up breakpoints etc., then resume VPP from"
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" within gdb by issuing the 'continue' command")
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print(single_line_delim)
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input("Press ENTER to continue running the testcase...")
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@classmethod
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def attach_vpp(cls):
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cls.vpp = DummyVpp()
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@classmethod
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def run_vpp(cls):
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cls.logger.debug(f"Assigned cpus: {cls.cpus}")
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cmdline = cls.vpp_cmdline
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if cls.debug_gdbserver:
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gdbserver = '/usr/bin/gdbserver'
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if not os.path.isfile(gdbserver) or\
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not os.access(gdbserver, os.X_OK):
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raise Exception("gdbserver binary '%s' does not exist or is "
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"not executable" % gdbserver)
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cmdline = [gdbserver, 'localhost:{port}'
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.format(port=cls.gdbserver_port)] + cls.vpp_cmdline
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cls.logger.info("Gdbserver cmdline is %s", " ".join(cmdline))
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try:
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cls.vpp = subprocess.Popen(cmdline,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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except subprocess.CalledProcessError as e:
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cls.logger.critical("Subprocess returned with non-0 return code: ("
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"%s)", e.returncode)
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raise
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except OSError as e:
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cls.logger.critical("Subprocess returned with OS error: "
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"(%s) %s", e.errno, e.strerror)
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raise
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except Exception as e:
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cls.logger.exception("Subprocess returned unexpected from "
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"%s:", cmdline)
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raise
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cls.wait_for_enter()
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@classmethod
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|
def wait_for_coredump(cls):
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corefile = cls.tempdir + "/core"
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if os.path.isfile(corefile):
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cls.logger.error("Waiting for coredump to complete: %s", corefile)
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curr_size = os.path.getsize(corefile)
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deadline = time.time() + 60
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ok = False
|
|
while time.time() < deadline:
|
|
cls.sleep(1)
|
|
size = curr_size
|
|
curr_size = os.path.getsize(corefile)
|
|
if size == curr_size:
|
|
ok = True
|
|
break
|
|
if not ok:
|
|
cls.logger.error("Timed out waiting for coredump to complete:"
|
|
" %s", corefile)
|
|
else:
|
|
cls.logger.error("Coredump complete: %s, size %d",
|
|
corefile, curr_size)
|
|
|
|
@classmethod
|
|
def get_stats_sock_path(cls):
|
|
return "%s/stats.sock" % cls.tempdir
|
|
|
|
@classmethod
|
|
def get_api_sock_path(cls):
|
|
return "%s/api.sock" % cls.tempdir
|
|
|
|
@classmethod
|
|
def get_api_segment_prefix(cls):
|
|
return os.path.basename(cls.tempdir) # Only used for VAPI
|
|
|
|
@classmethod
|
|
def get_tempdir(cls):
|
|
tmpdir = f"{config.tmp_dir}/vpp-unittest-{cls.__name__}"
|
|
if config.wipe_tmp_dir:
|
|
shutil.rmtree(tmpdir, ignore_errors=True)
|
|
os.mkdir(tmpdir)
|
|
return tmpdir
|
|
|
|
@classmethod
|
|
def create_file_handler(cls):
|
|
if config.log_dir is None:
|
|
cls.file_handler = FileHandler(f"{cls.tempdir}/log.txt")
|
|
return
|
|
|
|
logdir = f"{config.log_dir}/vpp-unittest-{cls.__name__}"
|
|
if config.wipe_tmp_dir:
|
|
shutil.rmtree(logdir, ignore_errors=True)
|
|
os.mkdir(logdir)
|
|
cls.file_handler = FileHandler(f"{logdir}/log.txt")
|
|
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
"""
|
|
Perform class setup before running the testcase
|
|
Remove shared memory files, start vpp and connect the vpp-api
|
|
"""
|
|
super(VppTestCase, cls).setUpClass()
|
|
cls.logger = get_logger(cls.__name__)
|
|
random.seed(config.rnd_seed)
|
|
if hasattr(cls, 'parallel_handler'):
|
|
cls.logger.addHandler(cls.parallel_handler)
|
|
cls.logger.propagate = False
|
|
cls.set_debug_flags(config.debug)
|
|
cls.tempdir = cls.get_tempdir()
|
|
cls.create_file_handler()
|
|
cls.file_handler.setFormatter(
|
|
Formatter(fmt='%(asctime)s,%(msecs)03d %(message)s',
|
|
datefmt="%H:%M:%S"))
|
|
cls.file_handler.setLevel(DEBUG)
|
|
cls.logger.addHandler(cls.file_handler)
|
|
cls.logger.debug("--- setUpClass() for %s called ---" % cls.__name__)
|
|
os.chdir(cls.tempdir)
|
|
cls.logger.info("Temporary dir is %s, api socket is %s",
|
|
cls.tempdir, cls.get_api_sock_path())
|
|
cls.logger.debug("Random seed is %s", config.rnd_seed)
|
|
cls.setUpConstants()
|
|
cls.reset_packet_infos()
|
|
cls._pcaps = []
|
|
cls._old_pcaps = []
|
|
cls.verbose = 0
|
|
cls.vpp_dead = False
|
|
cls.registry = VppObjectRegistry()
|
|
cls.vpp_startup_failed = False
|
|
cls.reporter = KeepAliveReporter()
|
|
# need to catch exceptions here because if we raise, then the cleanup
|
|
# doesn't get called and we might end with a zombie vpp
|
|
try:
|
|
if cls.debug_attach:
|
|
cls.attach_vpp()
|
|
else:
|
|
cls.run_vpp()
|
|
cls.reporter.send_keep_alive(cls, 'setUpClass')
|
|
VppTestResult.current_test_case_info = TestCaseInfo(
|
|
cls.logger, cls.tempdir, cls.vpp.pid, config.vpp)
|
|
cls.vpp_stdout_deque = deque()
|
|
cls.vpp_stderr_deque = deque()
|
|
if not cls.debug_attach:
|
|
cls.pump_thread_stop_flag = Event()
|
|
cls.pump_thread_wakeup_pipe = os.pipe()
|
|
cls.pump_thread = Thread(target=pump_output, args=(cls,))
|
|
cls.pump_thread.daemon = True
|
|
cls.pump_thread.start()
|
|
if cls.debug_gdb or cls.debug_gdbserver or cls.debug_attach:
|
|
cls.vapi_response_timeout = 0
|
|
cls.vapi = VppPapiProvider(cls.__name__, cls,
|
|
cls.vapi_response_timeout)
|
|
if cls.step:
|
|
hook = hookmodule.StepHook(cls)
|
|
else:
|
|
hook = hookmodule.PollHook(cls)
|
|
cls.vapi.register_hook(hook)
|
|
cls.statistics = VPPStats(socketname=cls.get_stats_sock_path())
|
|
try:
|
|
hook.poll_vpp()
|
|
except VppDiedError:
|
|
cls.vpp_startup_failed = True
|
|
cls.logger.critical(
|
|
"VPP died shortly after startup, check the"
|
|
" output to standard error for possible cause")
|
|
raise
|
|
try:
|
|
cls.vapi.connect()
|
|
except (vpp_papi.VPPIOError, Exception) as e:
|
|
cls.logger.debug("Exception connecting to vapi: %s" % e)
|
|
cls.vapi.disconnect()
|
|
|
|
if cls.debug_gdbserver:
|
|
print(colorize("You're running VPP inside gdbserver but "
|
|
"VPP-API connection failed, did you forget "
|
|
"to 'continue' VPP from within gdb?", RED))
|
|
raise e
|
|
if cls.debug_attach:
|
|
last_line = cls.vapi.cli("show thread").split("\n")[-2]
|
|
cls.vpp_worker_count = int(last_line.split(" ")[0])
|
|
print("Detected VPP with %s workers." % cls.vpp_worker_count)
|
|
except vpp_papi.VPPRuntimeError as e:
|
|
cls.logger.debug("%s" % e)
|
|
cls.quit()
|
|
raise e
|
|
except Exception as e:
|
|
cls.logger.debug("Exception connecting to VPP: %s" % e)
|
|
cls.quit()
|
|
raise e
|
|
|
|
@classmethod
|
|
def _debug_quit(cls):
|
|
if (cls.debug_gdbserver or cls.debug_gdb):
|
|
try:
|
|
cls.vpp.poll()
|
|
|
|
if cls.vpp.returncode is None:
|
|
print()
|
|
print(double_line_delim)
|
|
print("VPP or GDB server is still running")
|
|
print(single_line_delim)
|
|
input("When done debugging, press ENTER to kill the "
|
|
"process and finish running the testcase...")
|
|
except AttributeError:
|
|
pass
|
|
|
|
@classmethod
|
|
def quit(cls):
|
|
"""
|
|
Disconnect vpp-api, kill vpp and cleanup shared memory files
|
|
"""
|
|
cls._debug_quit()
|
|
|
|
# first signal that we want to stop the pump thread, then wake it up
|
|
if hasattr(cls, 'pump_thread_stop_flag'):
|
|
cls.pump_thread_stop_flag.set()
|
|
if hasattr(cls, 'pump_thread_wakeup_pipe'):
|
|
os.write(cls.pump_thread_wakeup_pipe[1], b'ding dong wake up')
|
|
if hasattr(cls, 'pump_thread'):
|
|
cls.logger.debug("Waiting for pump thread to stop")
|
|
cls.pump_thread.join()
|
|
if hasattr(cls, 'vpp_stderr_reader_thread'):
|
|
cls.logger.debug("Waiting for stderr pump to stop")
|
|
cls.vpp_stderr_reader_thread.join()
|
|
|
|
if hasattr(cls, 'vpp'):
|
|
if hasattr(cls, 'vapi'):
|
|
cls.logger.debug(cls.vapi.vpp.get_stats())
|
|
cls.logger.debug("Disconnecting class vapi client on %s",
|
|
cls.__name__)
|
|
cls.vapi.disconnect()
|
|
cls.logger.debug("Deleting class vapi attribute on %s",
|
|
cls.__name__)
|
|
del cls.vapi
|
|
cls.vpp.poll()
|
|
if not cls.debug_attach and cls.vpp.returncode is None:
|
|
cls.wait_for_coredump()
|
|
cls.logger.debug("Sending TERM to vpp")
|
|
cls.vpp.terminate()
|
|
cls.logger.debug("Waiting for vpp to die")
|
|
try:
|
|
outs, errs = cls.vpp.communicate(timeout=5)
|
|
except subprocess.TimeoutExpired:
|
|
cls.vpp.kill()
|
|
outs, errs = cls.vpp.communicate()
|
|
cls.logger.debug("Deleting class vpp attribute on %s",
|
|
cls.__name__)
|
|
if not cls.debug_attach:
|
|
cls.vpp.stdout.close()
|
|
cls.vpp.stderr.close()
|
|
del cls.vpp
|
|
|
|
if cls.vpp_startup_failed:
|
|
stdout_log = cls.logger.info
|
|
stderr_log = cls.logger.critical
|
|
else:
|
|
stdout_log = cls.logger.info
|
|
stderr_log = cls.logger.info
|
|
|
|
if hasattr(cls, 'vpp_stdout_deque'):
|
|
stdout_log(single_line_delim)
|
|
stdout_log('VPP output to stdout while running %s:', cls.__name__)
|
|
stdout_log(single_line_delim)
|
|
vpp_output = "".join(cls.vpp_stdout_deque)
|
|
with open(cls.tempdir + '/vpp_stdout.txt', 'w') as f:
|
|
f.write(vpp_output)
|
|
stdout_log('\n%s', vpp_output)
|
|
stdout_log(single_line_delim)
|
|
|
|
if hasattr(cls, 'vpp_stderr_deque'):
|
|
stderr_log(single_line_delim)
|
|
stderr_log('VPP output to stderr while running %s:', cls.__name__)
|
|
stderr_log(single_line_delim)
|
|
vpp_output = "".join(cls.vpp_stderr_deque)
|
|
with open(cls.tempdir + '/vpp_stderr.txt', 'w') as f:
|
|
f.write(vpp_output)
|
|
stderr_log('\n%s', vpp_output)
|
|
stderr_log(single_line_delim)
|
|
|
|
@classmethod
|
|
def tearDownClass(cls):
|
|
""" Perform final cleanup after running all tests in this test-case """
|
|
cls.logger.debug("--- tearDownClass() for %s called ---" %
|
|
cls.__name__)
|
|
cls.reporter.send_keep_alive(cls, 'tearDownClass')
|
|
cls.quit()
|
|
cls.file_handler.close()
|
|
cls.reset_packet_infos()
|
|
if config.debug_framework:
|
|
debug_internal.on_tear_down_class(cls)
|
|
|
|
def show_commands_at_teardown(self):
|
|
""" Allow subclass specific teardown logging additions."""
|
|
self.logger.info("--- No test specific show commands provided. ---")
|
|
|
|
def tearDown(self):
|
|
""" Show various debug prints after each test """
|
|
self.logger.debug("--- tearDown() for %s.%s(%s) called ---" %
|
|
(self.__class__.__name__, self._testMethodName,
|
|
self._testMethodDoc))
|
|
|
|
try:
|
|
if not self.vpp_dead:
|
|
self.logger.debug(self.vapi.cli("show trace max 1000"))
|
|
self.logger.info(self.vapi.ppcli("show interface"))
|
|
self.logger.info(self.vapi.ppcli("show hardware"))
|
|
self.logger.info(self.statistics.set_errors_str())
|
|
self.logger.info(self.vapi.ppcli("show run"))
|
|
self.logger.info(self.vapi.ppcli("show log"))
|
|
self.logger.info(self.vapi.ppcli("show bihash"))
|
|
self.logger.info("Logging testcase specific show commands.")
|
|
self.show_commands_at_teardown()
|
|
if self.remove_configured_vpp_objects_on_tear_down:
|
|
self.registry.remove_vpp_config(self.logger)
|
|
# Save/Dump VPP api trace log
|
|
m = self._testMethodName
|
|
api_trace = "vpp_api_trace.%s.%d.log" % (m, self.vpp.pid)
|
|
tmp_api_trace = "/tmp/%s" % api_trace
|
|
vpp_api_trace_log = "%s/%s" % (self.tempdir, api_trace)
|
|
self.logger.info(self.vapi.ppcli("api trace save %s" % api_trace))
|
|
self.logger.info("Moving %s to %s\n" % (tmp_api_trace,
|
|
vpp_api_trace_log))
|
|
os.rename(tmp_api_trace, vpp_api_trace_log)
|
|
except VppTransportSocketIOError:
|
|
self.logger.debug("VppTransportSocketIOError: Vpp dead. "
|
|
"Cannot log show commands.")
|
|
self.vpp_dead = True
|
|
else:
|
|
self.registry.unregister_all(self.logger)
|
|
|
|
def setUp(self):
|
|
""" Clear trace before running each test"""
|
|
super(VppTestCase, self).setUp()
|
|
self.reporter.send_keep_alive(self)
|
|
if self.vpp_dead:
|
|
raise VppDiedError(rv=None, testcase=self.__class__.__name__,
|
|
method_name=self._testMethodName)
|
|
self.sleep(.1, "during setUp")
|
|
self.vpp_stdout_deque.append(
|
|
"--- test setUp() for %s.%s(%s) starts here ---\n" %
|
|
(self.__class__.__name__, self._testMethodName,
|
|
self._testMethodDoc))
|
|
self.vpp_stderr_deque.append(
|
|
"--- test setUp() for %s.%s(%s) starts here ---\n" %
|
|
(self.__class__.__name__, self._testMethodName,
|
|
self._testMethodDoc))
|
|
self.vapi.cli("clear trace")
|
|
# store the test instance inside the test class - so that objects
|
|
# holding the class can access instance methods (like assertEqual)
|
|
type(self).test_instance = self
|
|
|
|
@classmethod
|
|
def pg_enable_capture(cls, interfaces=None):
|
|
"""
|
|
Enable capture on packet-generator interfaces
|
|
|
|
:param interfaces: iterable interface indexes (if None,
|
|
use self.pg_interfaces)
|
|
|
|
"""
|
|
if interfaces is None:
|
|
interfaces = cls.pg_interfaces
|
|
for i in interfaces:
|
|
i.enable_capture()
|
|
|
|
@classmethod
|
|
def register_pcap(cls, intf, worker):
|
|
""" Register a pcap in the testclass """
|
|
# add to the list of captures with current timestamp
|
|
cls._pcaps.append((intf, worker))
|
|
|
|
@classmethod
|
|
def get_vpp_time(cls):
|
|
# processes e.g. "Time now 2.190522, Wed, 11 Mar 2020 17:29:54 GMT"
|
|
# returns float("2.190522")
|
|
timestr = cls.vapi.cli('show clock')
|
|
head, sep, tail = timestr.partition(',')
|
|
head, sep, tail = head.partition('Time now')
|
|
return float(tail)
|
|
|
|
@classmethod
|
|
def sleep_on_vpp_time(cls, sec):
|
|
""" Sleep according to time in VPP world """
|
|
# On a busy system with many processes
|
|
# we might end up with VPP time being slower than real world
|
|
# So take that into account when waiting for VPP to do something
|
|
start_time = cls.get_vpp_time()
|
|
while cls.get_vpp_time() - start_time < sec:
|
|
cls.sleep(0.1)
|
|
|
|
@classmethod
|
|
def pg_start(cls, trace=True):
|
|
""" Enable the PG, wait till it is done, then clean up """
|
|
for (intf, worker) in cls._old_pcaps:
|
|
intf.handle_old_pcap_file(intf.get_in_path(worker),
|
|
intf.in_history_counter)
|
|
cls._old_pcaps = []
|
|
if trace:
|
|
cls.vapi.cli("clear trace")
|
|
cls.vapi.cli("trace add pg-input 1000")
|
|
cls.vapi.cli('packet-generator enable')
|
|
# PG, when starts, runs to completion -
|
|
# so let's avoid a race condition,
|
|
# and wait a little till it's done.
|
|
# Then clean it up - and then be gone.
|
|
deadline = time.time() + 300
|
|
while cls.vapi.cli('show packet-generator').find("Yes") != -1:
|
|
cls.sleep(0.01) # yield
|
|
if time.time() > deadline:
|
|
cls.logger.error("Timeout waiting for pg to stop")
|
|
break
|
|
for intf, worker in cls._pcaps:
|
|
cls.vapi.cli('packet-generator delete %s' %
|
|
intf.get_cap_name(worker))
|
|
cls._old_pcaps = cls._pcaps
|
|
cls._pcaps = []
|
|
|
|
@classmethod
|
|
def create_pg_interfaces_internal(cls, interfaces, gso=0, gso_size=0,
|
|
mode=None):
|
|
"""
|
|
Create packet-generator interfaces.
|
|
|
|
:param interfaces: iterable indexes of the interfaces.
|
|
:returns: List of created interfaces.
|
|
|
|
"""
|
|
result = []
|
|
for i in interfaces:
|
|
intf = VppPGInterface(cls, i, gso, gso_size, mode)
|
|
setattr(cls, intf.name, intf)
|
|
result.append(intf)
|
|
cls.pg_interfaces = result
|
|
return result
|
|
|
|
@classmethod
|
|
def create_pg_ip4_interfaces(cls, interfaces, gso=0, gso_size=0):
|
|
pgmode = VppEnum.vl_api_pg_interface_mode_t
|
|
return cls.create_pg_interfaces_internal(interfaces, gso, gso_size,
|
|
pgmode.PG_API_MODE_IP4)
|
|
|
|
@classmethod
|
|
def create_pg_ip6_interfaces(cls, interfaces, gso=0, gso_size=0):
|
|
pgmode = VppEnum.vl_api_pg_interface_mode_t
|
|
return cls.create_pg_interfaces_internal(interfaces, gso, gso_size,
|
|
pgmode.PG_API_MODE_IP6)
|
|
|
|
@classmethod
|
|
def create_pg_interfaces(cls, interfaces, gso=0, gso_size=0):
|
|
pgmode = VppEnum.vl_api_pg_interface_mode_t
|
|
return cls.create_pg_interfaces_internal(interfaces, gso, gso_size,
|
|
pgmode.PG_API_MODE_ETHERNET)
|
|
|
|
@classmethod
|
|
def create_pg_ethernet_interfaces(cls, interfaces, gso=0, gso_size=0):
|
|
pgmode = VppEnum.vl_api_pg_interface_mode_t
|
|
return cls.create_pg_interfaces_internal(interfaces, gso, gso_size,
|
|
pgmode.PG_API_MODE_ETHERNET)
|
|
|
|
@classmethod
|
|
def create_loopback_interfaces(cls, count):
|
|
"""
|
|
Create loopback interfaces.
|
|
|
|
:param count: number of interfaces created.
|
|
:returns: List of created interfaces.
|
|
"""
|
|
result = [VppLoInterface(cls) for i in range(count)]
|
|
for intf in result:
|
|
setattr(cls, intf.name, intf)
|
|
cls.lo_interfaces = result
|
|
return result
|
|
|
|
@classmethod
|
|
def create_bvi_interfaces(cls, count):
|
|
"""
|
|
Create BVI interfaces.
|
|
|
|
:param count: number of interfaces created.
|
|
:returns: List of created interfaces.
|
|
"""
|
|
result = [VppBviInterface(cls) for i in range(count)]
|
|
for intf in result:
|
|
setattr(cls, intf.name, intf)
|
|
cls.bvi_interfaces = result
|
|
return result
|
|
|
|
@staticmethod
|
|
def extend_packet(packet, size, padding=' '):
|
|
"""
|
|
Extend packet to given size by padding with spaces or custom padding
|
|
NOTE: Currently works only when Raw layer is present.
|
|
|
|
:param packet: packet
|
|
:param size: target size
|
|
:param padding: padding used to extend the payload
|
|
|
|
"""
|
|
packet_len = len(packet) + 4
|
|
extend = size - packet_len
|
|
if extend > 0:
|
|
num = (extend // len(padding)) + 1
|
|
packet[Raw].load += (padding * num)[:extend].encode("ascii")
|
|
|
|
@classmethod
|
|
def reset_packet_infos(cls):
|
|
""" Reset the list of packet info objects and packet counts to zero """
|
|
cls._packet_infos = {}
|
|
cls._packet_count_for_dst_if_idx = {}
|
|
|
|
@classmethod
|
|
def create_packet_info(cls, src_if, dst_if):
|
|
"""
|
|
Create packet info object containing the source and destination indexes
|
|
and add it to the testcase's packet info list
|
|
|
|
:param VppInterface src_if: source interface
|
|
:param VppInterface dst_if: destination interface
|
|
|
|
:returns: _PacketInfo object
|
|
|
|
"""
|
|
info = _PacketInfo()
|
|
info.index = len(cls._packet_infos)
|
|
info.src = src_if.sw_if_index
|
|
info.dst = dst_if.sw_if_index
|
|
if isinstance(dst_if, VppSubInterface):
|
|
dst_idx = dst_if.parent.sw_if_index
|
|
else:
|
|
dst_idx = dst_if.sw_if_index
|
|
if dst_idx in cls._packet_count_for_dst_if_idx:
|
|
cls._packet_count_for_dst_if_idx[dst_idx] += 1
|
|
else:
|
|
cls._packet_count_for_dst_if_idx[dst_idx] = 1
|
|
cls._packet_infos[info.index] = info
|
|
return info
|
|
|
|
@staticmethod
|
|
def info_to_payload(info):
|
|
"""
|
|
Convert _PacketInfo object to packet payload
|
|
|
|
:param info: _PacketInfo object
|
|
|
|
:returns: string containing serialized data from packet info
|
|
"""
|
|
|
|
# retrieve payload, currently 18 bytes (4 x ints + 1 short)
|
|
return pack('iiiih', info.index, info.src,
|
|
info.dst, info.ip, info.proto)
|
|
|
|
@staticmethod
|
|
def payload_to_info(payload, payload_field='load'):
|
|
"""
|
|
Convert packet payload to _PacketInfo object
|
|
|
|
:param payload: packet payload
|
|
:type payload: <class 'scapy.packet.Raw'>
|
|
:param payload_field: packet fieldname of payload "load" for
|
|
<class 'scapy.packet.Raw'>
|
|
:type payload_field: str
|
|
:returns: _PacketInfo object containing de-serialized data from payload
|
|
|
|
"""
|
|
|
|
# retrieve payload, currently 18 bytes (4 x ints + 1 short)
|
|
payload_b = getattr(payload, payload_field)[:18]
|
|
|
|
info = _PacketInfo()
|
|
info.index, info.src, info.dst, info.ip, info.proto \
|
|
= unpack('iiiih', payload_b)
|
|
|
|
# some SRv6 TCs depend on get an exception if bad values are detected
|
|
if info.index > 0x4000:
|
|
raise ValueError('Index value is invalid')
|
|
|
|
return info
|
|
|
|
def get_next_packet_info(self, info):
|
|
"""
|
|
Iterate over the packet info list stored in the testcase
|
|
Start iteration with first element if info is None
|
|
Continue based on index in info if info is specified
|
|
|
|
:param info: info or None
|
|
:returns: next info in list or None if no more infos
|
|
"""
|
|
if info is None:
|
|
next_index = 0
|
|
else:
|
|
next_index = info.index + 1
|
|
if next_index == len(self._packet_infos):
|
|
return None
|
|
else:
|
|
return self._packet_infos[next_index]
|
|
|
|
def get_next_packet_info_for_interface(self, src_index, info):
|
|
"""
|
|
Search the packet info list for the next packet info with same source
|
|
interface index
|
|
|
|
:param src_index: source interface index to search for
|
|
:param info: packet info - where to start the search
|
|
:returns: packet info or None
|
|
|
|
"""
|
|
while True:
|
|
info = self.get_next_packet_info(info)
|
|
if info is None:
|
|
return None
|
|
if info.src == src_index:
|
|
return info
|
|
|
|
def get_next_packet_info_for_interface2(self, src_index, dst_index, info):
|
|
"""
|
|
Search the packet info list for the next packet info with same source
|
|
and destination interface indexes
|
|
|
|
:param src_index: source interface index to search for
|
|
:param dst_index: destination interface index to search for
|
|
:param info: packet info - where to start the search
|
|
:returns: packet info or None
|
|
|
|
"""
|
|
while True:
|
|
info = self.get_next_packet_info_for_interface(src_index, info)
|
|
if info is None:
|
|
return None
|
|
if info.dst == dst_index:
|
|
return info
|
|
|
|
def assert_equal(self, real_value, expected_value, name_or_class=None):
|
|
if name_or_class is None:
|
|
self.assertEqual(real_value, expected_value)
|
|
return
|
|
try:
|
|
msg = "Invalid %s: %d('%s') does not match expected value %d('%s')"
|
|
msg = msg % (getdoc(name_or_class).strip(),
|
|
real_value, str(name_or_class(real_value)),
|
|
expected_value, str(name_or_class(expected_value)))
|
|
except Exception:
|
|
msg = "Invalid %s: %s does not match expected value %s" % (
|
|
name_or_class, real_value, expected_value)
|
|
|
|
self.assertEqual(real_value, expected_value, msg)
|
|
|
|
def assert_in_range(self,
|
|
real_value,
|
|
expected_min,
|
|
expected_max,
|
|
name=None):
|
|
if name is None:
|
|
msg = None
|
|
else:
|
|
msg = "Invalid %s: %s out of range <%s,%s>" % (
|
|
name, real_value, expected_min, expected_max)
|
|
self.assertTrue(expected_min <= real_value <= expected_max, msg)
|
|
|
|
def assert_packet_checksums_valid(self, packet,
|
|
ignore_zero_udp_checksums=True):
|
|
received = packet.__class__(scapy.compat.raw(packet))
|
|
udp_layers = ['UDP', 'UDPerror']
|
|
checksum_fields = ['cksum', 'chksum']
|
|
checksums = []
|
|
counter = 0
|
|
temp = received.__class__(scapy.compat.raw(received))
|
|
while True:
|
|
layer = temp.getlayer(counter)
|
|
if layer:
|
|
layer = layer.copy()
|
|
layer.remove_payload()
|
|
for cf in checksum_fields:
|
|
if hasattr(layer, cf):
|
|
if ignore_zero_udp_checksums and \
|
|
0 == getattr(layer, cf) and \
|
|
layer.name in udp_layers:
|
|
continue
|
|
delattr(temp.getlayer(counter), cf)
|
|
checksums.append((counter, cf))
|
|
else:
|
|
break
|
|
counter = counter + 1
|
|
if 0 == len(checksums):
|
|
return
|
|
temp = temp.__class__(scapy.compat.raw(temp))
|
|
for layer, cf in checksums:
|
|
calc_sum = getattr(temp[layer], cf)
|
|
self.assert_equal(
|
|
getattr(received[layer], cf), calc_sum,
|
|
"packet checksum on layer #%d: %s" % (layer, temp[layer].name))
|
|
self.logger.debug(
|
|
"Checksum field `%s` on `%s` layer has correct value `%s`" %
|
|
(cf, temp[layer].name, calc_sum))
|
|
|
|
def assert_checksum_valid(self, received_packet, layer,
|
|
field_name='chksum',
|
|
ignore_zero_checksum=False):
|
|
""" Check checksum of received packet on given layer """
|
|
received_packet_checksum = getattr(received_packet[layer], field_name)
|
|
if ignore_zero_checksum and 0 == received_packet_checksum:
|
|
return
|
|
recalculated = received_packet.__class__(
|
|
scapy.compat.raw(received_packet))
|
|
delattr(recalculated[layer], field_name)
|
|
recalculated = recalculated.__class__(scapy.compat.raw(recalculated))
|
|
self.assert_equal(received_packet_checksum,
|
|
getattr(recalculated[layer], field_name),
|
|
"packet checksum on layer: %s" % layer)
|
|
|
|
def assert_ip_checksum_valid(self, received_packet,
|
|
ignore_zero_checksum=False):
|
|
self.assert_checksum_valid(received_packet, 'IP',
|
|
ignore_zero_checksum=ignore_zero_checksum)
|
|
|
|
def assert_tcp_checksum_valid(self, received_packet,
|
|
ignore_zero_checksum=False):
|
|
self.assert_checksum_valid(received_packet, 'TCP',
|
|
ignore_zero_checksum=ignore_zero_checksum)
|
|
|
|
def assert_udp_checksum_valid(self, received_packet,
|
|
ignore_zero_checksum=True):
|
|
self.assert_checksum_valid(received_packet, 'UDP',
|
|
ignore_zero_checksum=ignore_zero_checksum)
|
|
|
|
def assert_embedded_icmp_checksum_valid(self, received_packet):
|
|
if received_packet.haslayer(IPerror):
|
|
self.assert_checksum_valid(received_packet, 'IPerror')
|
|
if received_packet.haslayer(TCPerror):
|
|
self.assert_checksum_valid(received_packet, 'TCPerror')
|
|
if received_packet.haslayer(UDPerror):
|
|
self.assert_checksum_valid(received_packet, 'UDPerror',
|
|
ignore_zero_checksum=True)
|
|
if received_packet.haslayer(ICMPerror):
|
|
self.assert_checksum_valid(received_packet, 'ICMPerror')
|
|
|
|
def assert_icmp_checksum_valid(self, received_packet):
|
|
self.assert_checksum_valid(received_packet, 'ICMP')
|
|
self.assert_embedded_icmp_checksum_valid(received_packet)
|
|
|
|
def assert_icmpv6_checksum_valid(self, pkt):
|
|
if pkt.haslayer(ICMPv6DestUnreach):
|
|
self.assert_checksum_valid(pkt, 'ICMPv6DestUnreach', 'cksum')
|
|
self.assert_embedded_icmp_checksum_valid(pkt)
|
|
if pkt.haslayer(ICMPv6EchoRequest):
|
|
self.assert_checksum_valid(pkt, 'ICMPv6EchoRequest', 'cksum')
|
|
if pkt.haslayer(ICMPv6EchoReply):
|
|
self.assert_checksum_valid(pkt, 'ICMPv6EchoReply', 'cksum')
|
|
|
|
def get_counter(self, counter):
|
|
if counter.startswith("/"):
|
|
counter_value = self.statistics.get_counter(counter)
|
|
else:
|
|
counters = self.vapi.cli("sh errors").split('\n')
|
|
counter_value = 0
|
|
for i in range(1, len(counters) - 1):
|
|
results = counters[i].split()
|
|
if results[1] == counter:
|
|
counter_value = int(results[0])
|
|
break
|
|
return counter_value
|
|
|
|
def assert_counter_equal(self, counter, expected_value,
|
|
thread=None, index=0):
|
|
c = self.get_counter(counter)
|
|
if thread is not None:
|
|
c = c[thread][index]
|
|
else:
|
|
c = sum(x[index] for x in c)
|
|
self.assert_equal(c, expected_value, "counter `%s'" % counter)
|
|
|
|
def assert_packet_counter_equal(self, counter, expected_value):
|
|
counter_value = self.get_counter(counter)
|
|
self.assert_equal(counter_value, expected_value,
|
|
"packet counter `%s'" % counter)
|
|
|
|
def assert_error_counter_equal(self, counter, expected_value):
|
|
counter_value = self.statistics[counter].sum()
|
|
self.assert_equal(counter_value, expected_value,
|
|
"error counter `%s'" % counter)
|
|
|
|
@classmethod
|
|
def sleep(cls, timeout, remark=None):
|
|
|
|
# /* Allow sleep(0) to maintain win32 semantics, and as decreed
|
|
# * by Guido, only the main thread can be interrupted.
|
|
# */
|
|
# https://github.com/python/cpython/blob/6673decfa0fb078f60587f5cb5e98460eea137c2/Modules/timemodule.c#L1892 # noqa
|
|
if timeout == 0:
|
|
# yield quantum
|
|
if hasattr(os, 'sched_yield'):
|
|
os.sched_yield()
|
|
else:
|
|
time.sleep(0)
|
|
return
|
|
|
|
cls.logger.debug("Starting sleep for %es (%s)", timeout, remark)
|
|
before = time.time()
|
|
time.sleep(timeout)
|
|
after = time.time()
|
|
if after - before > 2 * timeout:
|
|
cls.logger.error("unexpected self.sleep() result - "
|
|
"slept for %es instead of ~%es!",
|
|
after - before, timeout)
|
|
|
|
cls.logger.debug(
|
|
"Finished sleep (%s) - slept %es (wanted %es)",
|
|
remark, after - before, timeout)
|
|
|
|
def virtual_sleep(self, timeout, remark=None):
|
|
self.logger.debug("Moving VPP time by %s (%s)", timeout, remark)
|
|
self.vapi.cli("set clock adjust %s" % timeout)
|
|
|
|
def pg_send(self, intf, pkts, worker=None, trace=True):
|
|
intf.add_stream(pkts, worker=worker)
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start(trace=trace)
|
|
|
|
def snapshot_stats(self, stats_diff):
|
|
"""Return snapshot of interesting stats based on diff dictionary."""
|
|
stats_snapshot = {}
|
|
for sw_if_index in stats_diff:
|
|
for counter in stats_diff[sw_if_index]:
|
|
stats_snapshot[counter] = self.statistics[counter]
|
|
self.logger.debug(f"Took statistics stats_snapshot: {stats_snapshot}")
|
|
return stats_snapshot
|
|
|
|
def compare_stats_with_snapshot(self, stats_diff, stats_snapshot):
|
|
"""Assert appropriate difference between current stats and snapshot."""
|
|
for sw_if_index in stats_diff:
|
|
for cntr, diff in stats_diff[sw_if_index].items():
|
|
if sw_if_index == "err":
|
|
self.assert_equal(
|
|
self.statistics[cntr].sum(),
|
|
stats_snapshot[cntr].sum() + diff,
|
|
f"'{cntr}' counter value (previous value: "
|
|
f"{stats_snapshot[cntr].sum()}, "
|
|
f"expected diff: {diff})")
|
|
else:
|
|
try:
|
|
self.assert_equal(
|
|
self.statistics[cntr][:, sw_if_index].sum(),
|
|
stats_snapshot[cntr][:, sw_if_index].sum() + diff,
|
|
f"'{cntr}' counter value (previous value: "
|
|
f"{stats_snapshot[cntr][:, sw_if_index].sum()}, "
|
|
f"expected diff: {diff})")
|
|
except IndexError:
|
|
# if diff is 0, then this most probably a case where
|
|
# test declares multiple interfaces but traffic hasn't
|
|
# passed through this one yet - which means the counter
|
|
# value is 0 and can be ignored
|
|
if 0 != diff:
|
|
raise
|
|
|
|
def send_and_assert_no_replies(self, intf, pkts, remark="", timeout=None,
|
|
stats_diff=None, trace=True, msg=None):
|
|
if stats_diff:
|
|
stats_snapshot = self.snapshot_stats(stats_diff)
|
|
|
|
self.pg_send(intf, pkts)
|
|
|
|
try:
|
|
if not timeout:
|
|
timeout = 1
|
|
for i in self.pg_interfaces:
|
|
i.assert_nothing_captured(timeout=timeout, remark=remark)
|
|
timeout = 0.1
|
|
finally:
|
|
if trace:
|
|
if msg:
|
|
self.logger.debug(f"send_and_assert_no_replies: {msg}")
|
|
self.logger.debug(self.vapi.cli("show trace"))
|
|
|
|
if stats_diff:
|
|
self.compare_stats_with_snapshot(stats_diff, stats_snapshot)
|
|
|
|
def send_and_expect(self, intf, pkts, output, n_rx=None, worker=None,
|
|
trace=True, msg=None, stats_diff=None):
|
|
if stats_diff:
|
|
stats_snapshot = self.snapshot_stats(stats_diff)
|
|
|
|
if not n_rx:
|
|
n_rx = 1 if isinstance(pkts, Packet) else len(pkts)
|
|
self.pg_send(intf, pkts, worker=worker, trace=trace)
|
|
rx = output.get_capture(n_rx)
|
|
if trace:
|
|
if msg:
|
|
self.logger.debug(f"send_and_expect: {msg}")
|
|
self.logger.debug(self.vapi.cli("show trace"))
|
|
|
|
if stats_diff:
|
|
self.compare_stats_with_snapshot(stats_diff, stats_snapshot)
|
|
|
|
return rx
|
|
|
|
def send_and_expect_load_balancing(self, input, pkts, outputs,
|
|
worker=None, trace=True):
|
|
self.pg_send(input, pkts, worker=worker, trace=trace)
|
|
rxs = []
|
|
for oo in outputs:
|
|
rx = oo._get_capture(1)
|
|
self.assertNotEqual(0, len(rx))
|
|
rxs.append(rx)
|
|
if trace:
|
|
self.logger.debug(self.vapi.cli("show trace"))
|
|
return rxs
|
|
|
|
def send_and_expect_only(self, intf, pkts, output, timeout=None,
|
|
stats_diff=None):
|
|
if stats_diff:
|
|
stats_snapshot = self.snapshot_stats(stats_diff)
|
|
|
|
self.pg_send(intf, pkts)
|
|
rx = output.get_capture(len(pkts))
|
|
outputs = [output]
|
|
if not timeout:
|
|
timeout = 1
|
|
for i in self.pg_interfaces:
|
|
if i not in outputs:
|
|
i.assert_nothing_captured(timeout=timeout)
|
|
timeout = 0.1
|
|
|
|
if stats_diff:
|
|
self.compare_stats_with_snapshot(stats_diff, stats_snapshot)
|
|
|
|
return rx
|
|
|
|
|
|
def get_testcase_doc_name(test):
|
|
return getdoc(test.__class__).splitlines()[0]
|
|
|
|
|
|
def get_test_description(descriptions, test):
|
|
short_description = test.shortDescription()
|
|
if descriptions and short_description:
|
|
return short_description
|
|
else:
|
|
return str(test)
|
|
|
|
|
|
class TestCaseInfo(object):
|
|
def __init__(self, logger, tempdir, vpp_pid, vpp_bin_path):
|
|
self.logger = logger
|
|
self.tempdir = tempdir
|
|
self.vpp_pid = vpp_pid
|
|
self.vpp_bin_path = vpp_bin_path
|
|
self.core_crash_test = None
|
|
|
|
|
|
class VppTestResult(unittest.TestResult):
|
|
"""
|
|
@property result_string
|
|
String variable to store the test case result string.
|
|
@property errors
|
|
List variable containing 2-tuples of TestCase instances and strings
|
|
holding formatted tracebacks. Each tuple represents a test which
|
|
raised an unexpected exception.
|
|
@property failures
|
|
List variable containing 2-tuples of TestCase instances and strings
|
|
holding formatted tracebacks. Each tuple represents a test where
|
|
a failure was explicitly signalled using the TestCase.assert*()
|
|
methods.
|
|
"""
|
|
|
|
failed_test_cases_info = set()
|
|
core_crash_test_cases_info = set()
|
|
current_test_case_info = None
|
|
|
|
def __init__(self, stream=None, descriptions=None, verbosity=None,
|
|
runner=None):
|
|
"""
|
|
:param stream File descriptor to store where to report test results.
|
|
Set to the standard error stream by default.
|
|
:param descriptions Boolean variable to store information if to use
|
|
test case descriptions.
|
|
:param verbosity Integer variable to store required verbosity level.
|
|
"""
|
|
super(VppTestResult, self).__init__(stream, descriptions, verbosity)
|
|
self.stream = stream
|
|
self.descriptions = descriptions
|
|
self.verbosity = verbosity
|
|
self.result_string = None
|
|
self.runner = runner
|
|
self.printed = []
|
|
|
|
def addSuccess(self, test):
|
|
"""
|
|
Record a test succeeded result
|
|
|
|
:param test:
|
|
|
|
"""
|
|
if self.current_test_case_info:
|
|
self.current_test_case_info.logger.debug(
|
|
"--- addSuccess() %s.%s(%s) called" % (test.__class__.__name__,
|
|
test._testMethodName,
|
|
test._testMethodDoc))
|
|
unittest.TestResult.addSuccess(self, test)
|
|
self.result_string = colorize("OK", GREEN)
|
|
|
|
self.send_result_through_pipe(test, PASS)
|
|
|
|
def addSkip(self, test, reason):
|
|
"""
|
|
Record a test skipped.
|
|
|
|
:param test:
|
|
:param reason:
|
|
|
|
"""
|
|
if self.current_test_case_info:
|
|
self.current_test_case_info.logger.debug(
|
|
"--- addSkip() %s.%s(%s) called, reason is %s" %
|
|
(test.__class__.__name__, test._testMethodName,
|
|
test._testMethodDoc, reason))
|
|
unittest.TestResult.addSkip(self, test, reason)
|
|
self.result_string = colorize("SKIP", YELLOW)
|
|
|
|
if reason == "not enough cpus":
|
|
self.send_result_through_pipe(test, SKIP_CPU_SHORTAGE)
|
|
else:
|
|
self.send_result_through_pipe(test, SKIP)
|
|
|
|
def symlink_failed(self):
|
|
if self.current_test_case_info:
|
|
try:
|
|
failed_dir = config.failed_dir
|
|
link_path = os.path.join(
|
|
failed_dir,
|
|
'%s-FAILED' %
|
|
os.path.basename(self.current_test_case_info.tempdir))
|
|
|
|
self.current_test_case_info.logger.debug(
|
|
"creating a link to the failed test")
|
|
self.current_test_case_info.logger.debug(
|
|
"os.symlink(%s, %s)" %
|
|
(self.current_test_case_info.tempdir, link_path))
|
|
if os.path.exists(link_path):
|
|
self.current_test_case_info.logger.debug(
|
|
'symlink already exists')
|
|
else:
|
|
os.symlink(self.current_test_case_info.tempdir, link_path)
|
|
|
|
except Exception as e:
|
|
self.current_test_case_info.logger.error(e)
|
|
|
|
def send_result_through_pipe(self, test, result):
|
|
if hasattr(self, 'test_framework_result_pipe'):
|
|
pipe = self.test_framework_result_pipe
|
|
if pipe:
|
|
pipe.send((test.id(), result))
|
|
|
|
def log_error(self, test, err, fn_name):
|
|
if self.current_test_case_info:
|
|
if isinstance(test, unittest.suite._ErrorHolder):
|
|
test_name = test.description
|
|
else:
|
|
test_name = '%s.%s(%s)' % (test.__class__.__name__,
|
|
test._testMethodName,
|
|
test._testMethodDoc)
|
|
self.current_test_case_info.logger.debug(
|
|
"--- %s() %s called, err is %s" %
|
|
(fn_name, test_name, err))
|
|
self.current_test_case_info.logger.debug(
|
|
"formatted exception is:\n%s" %
|
|
"".join(format_exception(*err)))
|
|
|
|
def add_error(self, test, err, unittest_fn, error_type):
|
|
if error_type == FAIL:
|
|
self.log_error(test, err, 'addFailure')
|
|
error_type_str = colorize("FAIL", RED)
|
|
elif error_type == ERROR:
|
|
self.log_error(test, err, 'addError')
|
|
error_type_str = colorize("ERROR", RED)
|
|
else:
|
|
raise Exception('Error type %s cannot be used to record an '
|
|
'error or a failure' % error_type)
|
|
|
|
unittest_fn(self, test, err)
|
|
if self.current_test_case_info:
|
|
self.result_string = "%s [ temp dir used by test case: %s ]" % \
|
|
(error_type_str,
|
|
self.current_test_case_info.tempdir)
|
|
self.symlink_failed()
|
|
self.failed_test_cases_info.add(self.current_test_case_info)
|
|
if is_core_present(self.current_test_case_info.tempdir):
|
|
if not self.current_test_case_info.core_crash_test:
|
|
if isinstance(test, unittest.suite._ErrorHolder):
|
|
test_name = str(test)
|
|
else:
|
|
test_name = "'{!s}' ({!s})".format(
|
|
get_testcase_doc_name(test), test.id())
|
|
self.current_test_case_info.core_crash_test = test_name
|
|
self.core_crash_test_cases_info.add(
|
|
self.current_test_case_info)
|
|
else:
|
|
self.result_string = '%s [no temp dir]' % error_type_str
|
|
|
|
self.send_result_through_pipe(test, error_type)
|
|
|
|
def addFailure(self, test, err):
|
|
"""
|
|
Record a test failed result
|
|
|
|
:param test:
|
|
:param err: error message
|
|
|
|
"""
|
|
self.add_error(test, err, unittest.TestResult.addFailure, FAIL)
|
|
|
|
def addError(self, test, err):
|
|
"""
|
|
Record a test error result
|
|
|
|
:param test:
|
|
:param err: error message
|
|
|
|
"""
|
|
self.add_error(test, err, unittest.TestResult.addError, ERROR)
|
|
|
|
def getDescription(self, test):
|
|
"""
|
|
Get test description
|
|
|
|
:param test:
|
|
:returns: test description
|
|
|
|
"""
|
|
return get_test_description(self.descriptions, test)
|
|
|
|
def startTest(self, test):
|
|
"""
|
|
Start a test
|
|
|
|
:param test:
|
|
|
|
"""
|
|
|
|
def print_header(test):
|
|
if test.__class__ in self.printed:
|
|
return
|
|
|
|
test_doc = getdoc(test)
|
|
if not test_doc:
|
|
raise Exception("No doc string for test '%s'" % test.id())
|
|
|
|
test_title = test_doc.splitlines()[0].rstrip()
|
|
test_title = colorize(test_title, GREEN)
|
|
if test.is_tagged_run_solo():
|
|
test_title = colorize(f"SOLO RUN: {test_title}", YELLOW)
|
|
|
|
# This block may overwrite the colorized title above,
|
|
# but we want this to stand out and be fixed
|
|
if test.has_tag(TestCaseTag.FIXME_VPP_WORKERS):
|
|
test_title = colorize(
|
|
f"FIXME with VPP workers: {test_title}", RED)
|
|
|
|
if test.has_tag(TestCaseTag.FIXME_ASAN):
|
|
test_title = colorize(
|
|
f"FIXME with ASAN: {test_title}", RED)
|
|
test.skip_fixme_asan()
|
|
|
|
if hasattr(test, 'vpp_worker_count'):
|
|
if test.vpp_worker_count == 0:
|
|
test_title += " [main thread only]"
|
|
elif test.vpp_worker_count == 1:
|
|
test_title += " [1 worker thread]"
|
|
else:
|
|
test_title += f" [{test.vpp_worker_count} worker threads]"
|
|
|
|
if test.__class__.skipped_due_to_cpu_lack:
|
|
test_title = colorize(
|
|
f"{test_title} [skipped - not enough cpus, "
|
|
f"required={test.__class__.get_cpus_required()}, "
|
|
f"available={max_vpp_cpus}]", YELLOW)
|
|
|
|
print(double_line_delim)
|
|
print(test_title)
|
|
print(double_line_delim)
|
|
self.printed.append(test.__class__)
|
|
|
|
print_header(test)
|
|
self.start_test = time.time()
|
|
unittest.TestResult.startTest(self, test)
|
|
if self.verbosity > 0:
|
|
self.stream.writeln(
|
|
"Starting " + self.getDescription(test) + " ...")
|
|
self.stream.writeln(single_line_delim)
|
|
|
|
def stopTest(self, test):
|
|
"""
|
|
Called when the given test has been run
|
|
|
|
:param test:
|
|
|
|
"""
|
|
unittest.TestResult.stopTest(self, test)
|
|
|
|
if self.verbosity > 0:
|
|
self.stream.writeln(single_line_delim)
|
|
self.stream.writeln("%-73s%s" % (self.getDescription(test),
|
|
self.result_string))
|
|
self.stream.writeln(single_line_delim)
|
|
else:
|
|
self.stream.writeln("%-68s %4.2f %s" %
|
|
(self.getDescription(test),
|
|
time.time() - self.start_test,
|
|
self.result_string))
|
|
|
|
self.send_result_through_pipe(test, TEST_RUN)
|
|
|
|
def printErrors(self):
|
|
"""
|
|
Print errors from running the test case
|
|
"""
|
|
if len(self.errors) > 0 or len(self.failures) > 0:
|
|
self.stream.writeln()
|
|
self.printErrorList('ERROR', self.errors)
|
|
self.printErrorList('FAIL', self.failures)
|
|
|
|
# ^^ that is the last output from unittest before summary
|
|
if not self.runner.print_summary:
|
|
devnull = unittest.runner._WritelnDecorator(open(os.devnull, 'w'))
|
|
self.stream = devnull
|
|
self.runner.stream = devnull
|
|
|
|
def printErrorList(self, flavour, errors):
|
|
"""
|
|
Print error list to the output stream together with error type
|
|
and test case description.
|
|
|
|
:param flavour: error type
|
|
:param errors: iterable errors
|
|
|
|
"""
|
|
for test, err in errors:
|
|
self.stream.writeln(double_line_delim)
|
|
self.stream.writeln("%s: %s" %
|
|
(flavour, self.getDescription(test)))
|
|
self.stream.writeln(single_line_delim)
|
|
self.stream.writeln("%s" % err)
|
|
|
|
|
|
class VppTestRunner(unittest.TextTestRunner):
|
|
"""
|
|
A basic test runner implementation which prints results to standard error.
|
|
"""
|
|
|
|
@property
|
|
def resultclass(self):
|
|
"""Class maintaining the results of the tests"""
|
|
return VppTestResult
|
|
|
|
def __init__(self, keep_alive_pipe=None, descriptions=True, verbosity=1,
|
|
result_pipe=None, failfast=False, buffer=False,
|
|
resultclass=None, print_summary=True, **kwargs):
|
|
# ignore stream setting here, use hard-coded stdout to be in sync
|
|
# with prints from VppTestCase methods ...
|
|
super(VppTestRunner, self).__init__(sys.stdout, descriptions,
|
|
verbosity, failfast, buffer,
|
|
resultclass, **kwargs)
|
|
KeepAliveReporter.pipe = keep_alive_pipe
|
|
|
|
self.orig_stream = self.stream
|
|
self.resultclass.test_framework_result_pipe = result_pipe
|
|
|
|
self.print_summary = print_summary
|
|
|
|
def _makeResult(self):
|
|
return self.resultclass(self.stream,
|
|
self.descriptions,
|
|
self.verbosity,
|
|
self)
|
|
|
|
def run(self, test):
|
|
"""
|
|
Run the tests
|
|
|
|
:param test:
|
|
|
|
"""
|
|
faulthandler.enable() # emit stack trace to stderr if killed by signal
|
|
|
|
result = super(VppTestRunner, self).run(test)
|
|
if not self.print_summary:
|
|
self.stream = self.orig_stream
|
|
result.stream = self.orig_stream
|
|
return result
|
|
|
|
|
|
class Worker(Thread):
|
|
def __init__(self, executable_args, logger, env=None, *args, **kwargs):
|
|
super(Worker, self).__init__(*args, **kwargs)
|
|
self.logger = logger
|
|
self.args = executable_args
|
|
if hasattr(self, 'testcase') and self.testcase.debug_all:
|
|
if self.testcase.debug_gdbserver:
|
|
self.args = ['/usr/bin/gdbserver', 'localhost:{port}'
|
|
.format(port=self.testcase.gdbserver_port)] + args
|
|
elif self.testcase.debug_gdb and hasattr(self, 'wait_for_gdb'):
|
|
self.args.append(self.wait_for_gdb)
|
|
self.app_bin = executable_args[0]
|
|
self.app_name = os.path.basename(self.app_bin)
|
|
if hasattr(self, 'role'):
|
|
self.app_name += ' {role}'.format(role=self.role)
|
|
self.process = None
|
|
self.result = None
|
|
env = {} if env is None else env
|
|
self.env = copy.deepcopy(env)
|
|
|
|
def wait_for_enter(self):
|
|
if not hasattr(self, 'testcase'):
|
|
return
|
|
if self.testcase.debug_all and self.testcase.debug_gdbserver:
|
|
print()
|
|
print(double_line_delim)
|
|
print("Spawned GDB Server for '{app}' with PID: {pid}"
|
|
.format(app=self.app_name, pid=self.process.pid))
|
|
elif self.testcase.debug_all and self.testcase.debug_gdb:
|
|
print()
|
|
print(double_line_delim)
|
|
print("Spawned '{app}' with PID: {pid}"
|
|
.format(app=self.app_name, pid=self.process.pid))
|
|
else:
|
|
return
|
|
print(single_line_delim)
|
|
print("You can debug '{app}' using:".format(app=self.app_name))
|
|
if self.testcase.debug_gdbserver:
|
|
print("sudo gdb " + self.app_bin +
|
|
" -ex 'target remote localhost:{port}'"
|
|
.format(port=self.testcase.gdbserver_port))
|
|
print("Now is the time to attach gdb by running the above "
|
|
"command, set up breakpoints etc., then resume from "
|
|
"within gdb by issuing the 'continue' command")
|
|
self.testcase.gdbserver_port += 1
|
|
elif self.testcase.debug_gdb:
|
|
print("sudo gdb " + self.app_bin +
|
|
" -ex 'attach {pid}'".format(pid=self.process.pid))
|
|
print("Now is the time to attach gdb by running the above "
|
|
"command and set up breakpoints etc., then resume from"
|
|
" within gdb by issuing the 'continue' command")
|
|
print(single_line_delim)
|
|
input("Press ENTER to continue running the testcase...")
|
|
|
|
def run(self):
|
|
executable = self.args[0]
|
|
if not os.path.exists(executable) or not os.access(
|
|
executable, os.F_OK | os.X_OK):
|
|
# Exit code that means some system file did not exist,
|
|
# could not be opened, or had some other kind of error.
|
|
self.result = os.EX_OSFILE
|
|
raise EnvironmentError(
|
|
"executable '%s' is not found or executable." % executable)
|
|
self.logger.debug("Running executable '{app}': '{cmd}'"
|
|
.format(app=self.app_name,
|
|
cmd=' '.join(self.args)))
|
|
env = os.environ.copy()
|
|
env.update(self.env)
|
|
env["CK_LOG_FILE_NAME"] = "-"
|
|
self.process = subprocess.Popen(
|
|
['stdbuf', '-o0', '-e0'] + self.args, shell=False, env=env,
|
|
preexec_fn=os.setpgrp, stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.wait_for_enter()
|
|
out, err = self.process.communicate()
|
|
self.logger.debug("Finished running `{app}'".format(app=self.app_name))
|
|
self.logger.info("Return code is `%s'" % self.process.returncode)
|
|
self.logger.info(single_line_delim)
|
|
self.logger.info("Executable `{app}' wrote to stdout:"
|
|
.format(app=self.app_name))
|
|
self.logger.info(single_line_delim)
|
|
self.logger.info(out.decode('utf-8'))
|
|
self.logger.info(single_line_delim)
|
|
self.logger.info("Executable `{app}' wrote to stderr:"
|
|
.format(app=self.app_name))
|
|
self.logger.info(single_line_delim)
|
|
self.logger.info(err.decode('utf-8'))
|
|
self.logger.info(single_line_delim)
|
|
self.result = self.process.returncode
|
|
|
|
|
|
if __name__ == '__main__':
|
|
pass
|