build: various improvements - vpp - Vector Packet Processing

diff options

author	Damjan Marion <damarion@cisco.com>	2020-05-07 16:49:45 +0200
committer	Florin Coras <florin.coras@gmail.com>	2020-05-08 17:01:32 +0000
commit	599efc67e87e89666d44efd34b5d3db7ccf1f4ca (patch)
tree	5ced205cb5ff5247e8e9b596295d4ab4d60319c5 /extras/libmemif
parent	13f64ce2272539d97b8c499e8e298a053fb3c9e2 (diff)

build: various improvements

- add option to install only host tools - add option to specify lib and runtime dir Type: improvement Change-Id: I6356b52df459120fc9b0127948bae7679fb10e52 Signed-off-by: Damjan Marion <damarion@cisco.com>

Diffstat (limited to 'extras/libmemif')

-rw-r--r--

extras/libmemif/CMakeLists.txt

-rw-r--r--

extras/libmemif/examples/CMakeLists.txt

-rw-r--r--

extras/libmemif/src/CMakeLists.txt

-rw-r--r--

extras/libmemif/test/CMakeLists.txt

4 files changed, 91 insertions, 26 deletions

#!/usr/bin/env python from __future__ import print_function import gc import sys import os import select import unittest import tempfile import time import faulthandler import random import copy from collections import deque from threading import Thread, Event from inspect import getdoc, isclass from traceback import format_exception from logging import FileHandler, DEBUG, Formatter from scapy.packet import Raw from hook import StepHook, PollHook, VppDiedError from vpp_pg_interface import VppPGInterface from vpp_sub_interface import VppSubInterface from vpp_lo_interface import VppLoInterface from vpp_papi_provider import VppPapiProvider from log import RED, GREEN, YELLOW, double_line_delim, single_line_delim, \ getLogger, colorize from vpp_object import VppObjectRegistry from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror from scapy.layers.inet6 import ICMPv6DestUnreach, ICMPv6EchoRequest from scapy.layers.inet6 import ICMPv6EchoReply if os.name == 'posix' and sys.version_info[0] < 3: # using subprocess32 is recommended by python official documentation # @ https://docs.python.org/2/library/subprocess.html import subprocess32 as subprocess else: import subprocess debug_framework = False if os.getenv('TEST_DEBUG', "0") == "1": debug_framework = True import debug_internal """ Test framework module. The module provides a set of tools for constructing and running tests and representing the results. """ class _PacketInfo(object): """Private class to create packet info object. Help process information about the next packet. Set variables to default values. """ #: Store the index of the packet. index = -1 #: Store the index of the source packet generator interface of the packet. src = -1 #: Store the index of the destination packet generator interface #: of the packet. dst = -1 #: Store expected ip version ip = -1 #: Store expected upper protocol proto = -1 #: Store the copy of the former packet. data = None def __eq__(self, other): index = self.index == other.index src = self.src == other.src dst = self.dst == other.dst data = self.data == other.data return index and src and dst and data def pump_output(testclass): """ pump output from vpp stdout/stderr to proper queues """ stdout_fragment = "" stderr_fragment = "" while not testclass.pump_thread_stop_flag.wait(0): readable = select.select([testclass.vpp.stdout.fileno(), testclass.vpp.stderr.fileno(), testclass.pump_thread_wakeup_pipe[0]], [], [])[0] if testclass.vpp.stdout.fileno() in readable: read = os.read(testclass.vpp.stdout.fileno(), 102400) if len(read) > 0: split = read.splitlines(True) if len(stdout_fragment) > 0: split[0] = "%s%s" % (stdout_fragment, split[0]) if len(split) > 0 and split[-1].endswith("\n"): limit = None else: limit = -1 stdout_fragment = split[-1] testclass.vpp_stdout_deque.extend(split[:limit]) if not testclass.cache_vpp_output: for line in split[:limit]: testclass.logger.debug( "VPP STDOUT: %s" % line.rstrip("\n")) if testclass.vpp.stderr.fileno() in readable: read = os.read(testclass.vpp.stderr.fileno(), 102400) if len(read) > 0: split = read.splitlines(True) if len(stderr_fragment) > 0: split[0] = "%s%s" % (stderr_fragment, split[0]) if len(split) > 0 and split[-1].endswith("\n"): limit = None else: limit = -1 stderr_fragment = split[-1] testclass.vpp_stderr_deque.extend(split[:limit]) if not testclass.cache_vpp_output: for line in split[:limit]: testclass.logger.debug( "VPP STDERR: %s" % line.rstrip("\n")) # ignoring the dummy pipe here intentionally - the flag will take care # of properly terminating the loop def running_extended_tests(): s = os.getenv("EXTENDED_TESTS", "n") return True if s.lower() in ("y", "yes", "1") else False def running_on_centos(): os_id = os.getenv("OS_ID", "") return True if "centos" in os_id.lower() else False class KeepAliveReporter(object): """ Singleton object which reports test start to parent process """ _shared_state = {} def __init__(self): self.__dict__ = self._shared_state @property def pipe(self): return self._pipe @pipe.setter def pipe(self, pipe): if hasattr(self, '_pipe'): raise Exception("Internal error - pipe should only be set once.") self._pipe = pipe def send_keep_alive(self, test): """ Write current test tmpdir & desc to keep-alive pipe to signal liveness """ if self.pipe is None: # if not running forked.. return if isclass(test): desc = test.__name__ else: desc = test.shortDescription() if not desc: desc = str(test) self.pipe.send((desc, test.vpp_bin, test.tempdir, test.vpp.pid)) class VppTestCase(unittest.TestCase): """This subclass is a base class for VPP test cases that are implemented as classes. It provides methods to create and run test case. """ @property def packet_infos(self): """List of packet infos""" return self._packet_infos @classmethod def get_packet_count_for_if_idx(cls, dst_if_index): """Get the number of packet info for specified destination if index""" if dst_if_index in cls._packet_count_for_dst_if_idx: return cls._packet_count_for_dst_if_idx[dst_if_index] else: return 0 @classmethod def instance(cls): """Return the instance of this testcase""" return cls.test_instance @classmethod def set_debug_flags(cls, d): cls.debug_core = False cls.debug_gdb = False cls.debug_gdbserver = False if d is None: return dl = d.lower() if dl == "core": cls.debug_core = True elif dl == "gdb": cls.debug_gdb = True elif dl == "gdbserver": cls.debug_gdbserver = True else: raise Exception("Unrecognized DEBUG option: '%s'" % d) @classmethod def setUpConstants(cls): """ Set-up the test case class based on environment variables """ s = os.getenv("STEP", "n") cls.step = True if s.lower() in ("y", "yes", "1") else False d = os.getenv("DEBUG", None) c = os.getenv("CACHE_OUTPUT", "1") cls.cache_vpp_output = False if c.lower() in ("n", "no", "0") else True cls.set_debug_flags(d) cls.vpp_bin = os.getenv('VPP_TEST_BIN', "vpp") cls.plugin_path = os.getenv('VPP_TEST_PLUGIN_PATH') cls.extern_plugin_path = os.getenv('EXTERN_PLUGINS') plugin_path = None if cls.plugin_path is not None: if cls.extern_plugin_path is not None: plugin_path = "%s:%s" % ( cls.plugin_path, cls.extern_plugin_path) else: plugin_path = cls.plugin_path elif cls.extern_plugin_path is not None: plugin_path = cls.extern_plugin_path debug_cli = "" if cls.step or cls.debug_gdb or cls.debug_gdbserver: debug_cli = "cli-listen localhost:5002" coredump_size = None size = os.getenv("COREDUMP_SIZE") if size is not None: coredump_size = "coredump-size %s" % size if coredump_size is None: coredump_size = "coredump-size unlimited" cls.vpp_cmdline = [cls.vpp_bin, "unix", "{", "nodaemon", debug_cli, "full-coredump", coredump_size, "}", "api-trace", "{", "on", "}", "api-segment", "{", "prefix", cls.shm_prefix, "}", "plugins", "{", "plugin", "dpdk_plugin.so", "{", "disable", "}", "}", ] if plugin_path is not None: cls.vpp_cmdline.extend(["plugin_path", plugin_path]) cls.logger.info("vpp_cmdline: %s" % cls.vpp_cmdline) @classmethod def wait_for_enter(cls): if cls.debug_gdbserver: print(double_line_delim) print("Spawned GDB server with PID: %d" % cls.vpp.pid) elif cls.debug_gdb: print(double_line_delim) print("Spawned VPP with PID: %d" % cls.vpp.pid) else: cls.logger.debug("Spawned VPP with PID: %d" % cls.vpp.pid) return print(single_line_delim) print("You can debug the VPP using e.g.:") if cls.debug_gdbserver: print("gdb " + cls.vpp_bin + " -ex 'target remote localhost:7777'") print("Now is the time to attach a gdb by running the above " "command, set up breakpoints etc. and then resume VPP from " "within gdb by issuing the 'continue' command") elif cls.debug_gdb: print("gdb " + cls.vpp_bin + " -ex 'attach %s'" % cls.vpp.pid) print("Now is the time to attach a gdb by running the above " "command and set up breakpoints etc.") print(single_line_delim) raw_input("Press ENTER to continue running the testcase...") @classmethod def run_vpp(cls): cmdline = cls.vpp_cmdline if cls.debug_gdbserver: gdbserver = '/usr/bin/gdbserver' if not os.path.isfile(gdbserver) or \ not os.access(gdbserver, os.X_OK): raise Exception("gdbserver binary '%s' does not exist or is " "not executable" % gdbserver) cmdline = [gdbserver, 'localhost:7777'] + cls.vpp_cmdline cls.logger.info("Gdbserver cmdline is %s", " ".join(cmdline)) try: cls.vpp = subprocess.Popen(cmdline, stdout=subprocess.PIPE, stderr=subprocess.PIPE, bufsize=1) except Exception as e: cls.logger.critical("Couldn't start vpp: %s" % e) raise cls.wait_for_enter() @classmethod def setUpClass(cls): """ Perform class setup before running the testcase Remove shared memory files, start vpp and connect the vpp-api """ gc.collect() # run garbage collection first random.seed() cls.logger = getLogger(cls.__name__) cls.tempdir = tempfile.mkdtemp( prefix='vpp-unittest-%s-' % cls.__name__) cls.file_handler = FileHandler("%s/log.txt" % cls.tempdir) 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.shm_prefix = cls.tempdir.split("/")[-1] os.chdir(cls.tempdir) cls.logger.info("Temporary dir is %s, shm prefix is %s", cls.tempdir, cls.shm_prefix) cls.setUpConstants() cls.reset_packet_infos() cls._captures = [] cls._zombie_captures = [] 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: cls.run_vpp() cls.reporter.send_keep_alive(cls) cls.vpp_stdout_deque = deque() cls.vpp_stderr_deque = deque() 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() cls.vapi = VppPapiProvider(cls.shm_prefix, cls.shm_prefix, cls) if cls.step: hook = StepHook(cls) else: hook = PollHook(cls) cls.vapi.register_hook(hook) cls.sleep(0.1, "after vpp startup, before initial poll") 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 Exception: try: cls.vapi.disconnect() except Exception: pass 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 except Exception: try: cls.quit() except Exception: pass raise @classmethod def quit(cls): """ Disconnect vpp-api, kill vpp and cleanup shared memory files """ if (cls.debug_gdbserver or cls.debug_gdb) and hasattr(cls, 'vpp'): cls.vpp.poll() if cls.vpp.returncode is None: print(double_line_delim) print("VPP or GDB server is still running") print(single_line_delim) raw_input("When done debugging, press ENTER to kill the " "process and finish running the testcase...") os.write(cls.pump_thread_wakeup_pipe[1], 'ding dong wake up') cls.pump_thread_stop_flag.set() 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 stdderr pump to stop") cls.vpp_stderr_reader_thread.join() if hasattr(cls, 'vpp'): if hasattr(cls, 'vapi'): cls.vapi.disconnect() del cls.vapi cls.vpp.poll() if cls.vpp.returncode is None: cls.logger.debug("Sending TERM to vpp") cls.vpp.terminate() cls.logger.debug("Waiting for vpp to die") cls.vpp.communicate() 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.quit() cls.file_handler.close() cls.reset_packet_infos() if debug_framework: debug_internal.on_tear_down_class(cls) 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)) if not self.vpp_dead: self.logger.debug(self.vapi.cli("show trace")) self.logger.info(self.vapi.ppcli("show interface")) self.logger.info(self.vapi.ppcli("show hardware")) self.logger.info(self.vapi.ppcli("show error")) self.logger.info(self.vapi.ppcli("show run")) self.logger.info(self.vapi.ppcli("show log")) self.registry.remove_vpp_config(self.logger) # Save/Dump VPP api trace log api_trace = "vpp_api_trace.%s.log" % self._testMethodName 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) self.logger.info(self.vapi.ppcli("api trace custom-dump %s" % vpp_api_trace_log)) else: self.registry.unregister_all(self.logger) def setUp(self): """ Clear trace before running each test""" self.reporter.send_keep_alive(self) self.logger.debug("--- setUp() for %s.%s(%s) called ---" % (self.__class__.__name__, self._testMethodName, self._testMethodDoc)) if self.vpp_dead: raise Exception("VPP is dead when setting up the test") 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_capture(cls, cap_name): """ Register a capture in the testclass """ # add to the list of captures with current timestamp cls._captures.append((time.time(), cap_name)) # filter out from zombies cls._zombie_captures = [(stamp, name) for (stamp, name) in cls._zombie_captures if name != cap_name] @classmethod def pg_start(cls): """ Remove any zombie captures and enable the packet generator """ # how long before capture is allowed to be deleted - otherwise vpp # crashes - 100ms seems enough (this shouldn't be needed at all) capture_ttl = 0.1 now = time.time() for stamp, cap_name in cls._zombie_captures: wait = stamp + capture_ttl - now if wait > 0: cls.sleep(wait, "before deleting capture %s" % cap_name) now = time.time() cls.logger.debug("Removing zombie capture %s" % cap_name) cls.vapi.cli('packet-generator delete %s' % cap_name) cls.vapi.cli("trace add pg-input 50") # 50 is maximum cls.vapi.cli('packet-generator enable') cls._zombie_captures = cls._captures cls._captures = [] @classmethod def create_pg_interfaces(cls, interfaces): """ 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) setattr(cls, intf.name, intf) result.append(intf) cls.pg_interfaces = result return result @classmethod def create_loopback_interfaces(cls, interfaces): """ Create loopback interfaces. :param interfaces: iterable indexes of the interfaces. :returns: List of created interfaces. """ result = [] for i in interfaces: intf = VppLoInterface(cls, i) setattr(cls, intf.name, intf) result.append(intf) cls.lo_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] @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 """ return "%d %d %d %d %d" % (info.index, info.src, info.dst, info.ip, info.proto) @staticmethod def payload_to_info(payload): """ Convert packet payload to _PacketInfo object :param payload: packet payload :returns: _PacketInfo object containing de-serialized data from payload """ numbers = payload.split() info = _PacketInfo() info.index = int(numbers[0]) info.src = int(numbers[1]) info.dst = int(numbers[2]) info.ip = int(numbers[3]) info.proto = int(numbers[4]) 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): udp_layers = ['UDP', 'UDPerror'] checksum_fields = ['cksum', 'chksum'] checksums = [] counter = 0 temp = packet.__class__(str(packet)) while True: layer = temp.getlayer(counter) if layer: 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(layer, cf) checksums.append((counter, cf)) else: break counter = counter + 1 temp = temp.__class__(str(temp)) for layer, cf in checksums: self.assert_equal(getattr(packet[layer], cf), getattr(temp[layer], cf), "packet checksum on layer #%d: %s" % ( layer, temp[layer].name)) 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__(str(received_packet)) delattr(recalculated[layer], field_name) recalculated = recalculated.__class__(str(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') @classmethod def sleep(cls, timeout, remark=None): if hasattr(cls, 'logger'): cls.logger.debug("Starting sleep for %ss (%s)" % (timeout, remark)) before = time.time() time.sleep(timeout) after = time.time() if after - before > 2 * timeout: cls.logger.error("unexpected time.sleep() result - " "slept for %ss instead of ~%ss!" % ( after - before, timeout)) if hasattr(cls, 'logger'): cls.logger.debug( "Finished sleep (%s) - slept %ss (wanted %ss)" % ( remark, after - before, timeout)) def send_and_assert_no_replies(self, intf, pkts, remark=""): self.vapi.cli("clear trace") intf.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() timeout = 1 for i in self.pg_interfaces: i.get_capture(0, timeout=timeout) i.assert_nothing_captured(remark=remark) timeout = 0.1 def send_and_expect(self, input, pkts, output): self.vapi.cli("clear trace") input.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = output.get_capture(len(pkts)) return rx class TestCasePrinter(object): _shared_state = {} def __init__(self): self.__dict__ = self._shared_state if not hasattr(self, "_test_case_set"): self._test_case_set = set() def print_test_case_heading_if_first_time(self, case): if case.__class__ not in self._test_case_set: print(double_line_delim) print(colorize(getdoc(case.__class__).splitlines()[0], YELLOW)) print(double_line_delim) self._test_case_set.add(case.__class__) 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. """ def __init__(self, stream, descriptions, verbosity): """ :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. """ unittest.TestResult.__init__(self, stream, descriptions, verbosity) self.stream = stream self.descriptions = descriptions self.verbosity = verbosity self.result_string = None self.printer = TestCasePrinter() def addSuccess(self, test): """ Record a test succeeded result :param test: """ if hasattr(test, 'logger'): test.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) def addSkip(self, test, reason): """ Record a test skipped. :param test: :param reason: """ if hasattr(test, 'logger'): test.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) def symlink_failed(self, test): logger = None if hasattr(test, 'logger'): logger = test.logger if hasattr(test, 'tempdir'): try: failed_dir = os.getenv('VPP_TEST_FAILED_DIR') link_path = '%s/%s-FAILED' % (failed_dir, test.tempdir.split("/")[-1]) if logger: logger.debug("creating a link to the failed test") logger.debug("os.symlink(%s, %s)" % (test.tempdir, link_path)) os.symlink(test.tempdir, link_path) except Exception as e: if logger: logger.error(e) def send_failure_through_pipe(self, test): if hasattr(self, 'test_framework_failed_pipe'): pipe = self.test_framework_failed_pipe if pipe: pipe.send(test.__class__) def addFailure(self, test, err): """ Record a test failed result :param test: :param err: error message """ if hasattr(test, 'logger'): test.logger.debug("--- addFailure() %s.%s(%s) called, err is %s" % (test.__class__.__name__, test._testMethodName, test._testMethodDoc, err)) test.logger.debug("formatted exception is:\n%s" % "".join(format_exception(*err))) unittest.TestResult.addFailure(self, test, err) if hasattr(test, 'tempdir'): self.result_string = colorize("FAIL", RED) + \ ' [ temp dir used by test case: ' + test.tempdir + ' ]' self.symlink_failed(test) else: self.result_string = colorize("FAIL", RED) + ' [no temp dir]' self.send_failure_through_pipe(test) def addError(self, test, err): """ Record a test error result :param test: :param err: error message """ if hasattr(test, 'logger'): test.logger.debug("--- addError() %s.%s(%s) called, err is %s" % (test.__class__.__name__, test._testMethodName, test._testMethodDoc, err)) test.logger.debug("formatted exception is:\n%s" % "".join(format_exception(*err))) unittest.TestResult.addError(self, test, err) if hasattr(test, 'tempdir'): self.result_string = colorize("ERROR", RED) + \ ' [ temp dir used by test case: ' + test.tempdir + ' ]' self.symlink_failed(test) else: self.result_string = colorize("ERROR", RED) + ' [no temp dir]' self.send_failure_through_pipe(test) def getDescription(self, test): """ Get test description :param test: :returns: test description """ # TODO: if none print warning not raise exception short_description = test.shortDescription() if self.descriptions and short_description: return short_description else: return str(test) def startTest(self, test): """ Start a test :param test: """ self.printer.print_test_case_heading_if_first_time(test) 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): """ Stop a test :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("%-73s%s" % (self.getDescription(test), self.result_string)) def printErrors(self): """ Print errors from running the test case """ self.stream.writeln() self.printErrorList('ERROR', self.errors) self.printErrorList('FAIL', self.failures) 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 Filter_by_test_option: def __init__(self, filter_file_name, filter_class_name, filter_func_name): self.filter_file_name = filter_file_name self.filter_class_name = filter_class_name self.filter_func_name = filter_func_name def __call__(self, file_name, class_name, func_name): if self.filter_file_name and file_name != self.filter_file_name: return False if self.filter_class_name and class_name != self.filter_class_name: return False if self.filter_func_name and func_name != self.filter_func_name: return False return True 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, failed_pipe=None, stream=sys.stderr, descriptions=True, verbosity=1, failfast=False, buffer=False, resultclass=None): # 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) reporter = KeepAliveReporter() reporter.pipe = keep_alive_pipe # this is super-ugly, but very simple to implement and works as long # as we run only one test at the same time VppTestResult.test_framework_failed_pipe = failed_pipe test_option = "TEST" def parse_test_option(self): f = os.getenv(self.test_option, None) filter_file_name = None filter_class_name = None filter_func_name = None if f: if '.' in f: parts = f.split('.') if len(parts) > 3: raise Exception("Unrecognized %s option: %s" % (self.test_option, f)) if len(parts) > 2: if parts[2] not in ('*', ''): filter_func_name = parts[2] if parts[1] not in ('*', ''): filter_class_name = parts[1] if parts[0] not in ('*', ''): if parts[0].startswith('test_'): filter_file_name = parts[0] else: filter_file_name = 'test_%s' % parts[0] else: if f.startswith('test_'): filter_file_name = f else: filter_file_name = 'test_%s' % f return filter_file_name, filter_class_name, filter_func_name @staticmethod def filter_tests(tests, filter_cb): result = unittest.suite.TestSuite() for t in tests: if isinstance(t, unittest.suite.TestSuite): # this is a bunch of tests, recursively filter... x = VppTestRunner.filter_tests(t, filter_cb) if x.countTestCases() > 0: result.addTest(x) elif isinstance(t, unittest.TestCase): # this is a single test parts = t.id().split('.') # t.id() for common cases like this: # test_classifier.TestClassifier.test_acl_ip # apply filtering only if it is so if len(parts) == 3: if not filter_cb(parts[0], parts[1], parts[2]): continue result.addTest(t) else: # unexpected object, don't touch it result.addTest(t) return result def run(self, test): """ Run the tests :param test: """ faulthandler.enable() # emit stack trace to stderr if killed by signal print("Running tests using custom test runner") # debug message filter_file, filter_class, filter_func = self.parse_test_option() print("Active filters: file=%s, class=%s, function=%s" % ( filter_file, filter_class, filter_func)) filter_cb = Filter_by_test_option( filter_file, filter_class, filter_func) filtered = self.filter_tests(test, filter_cb) print("%s out of %s tests match specified filters" % ( filtered.countTestCases(), test.countTestCases())) if not running_extended_tests(): print("Not running extended tests (some tests will be skipped)") return super(VppTestRunner, self).run(filtered) class Worker(Thread): def __init__(self, args, logger, env={}): self.logger = logger self.args = args self.result = None self.env = copy.deepcopy(env) super(Worker, self).__init__() def run(self): executable = self.args[0] self.logger.debug("Running executable w/args `%s'" % self.args) env = os.environ.copy() env.update(self.env) env["CK_LOG_FILE_NAME"] = "-" self.process = subprocess.Popen( self.args, shell=False, env=env, preexec_fn=os.setpgrp, stdout=subprocess.PIPE, stderr=subprocess.PIPE) out, err = self.process.communicate() self.logger.debug("Finished running `%s'" % executable) self.logger.info("Return code is `%s'" % self.process.returncode) self.logger.info(single_line_delim) self.logger.info("Executable `%s' wrote to stdout:" % executable) self.logger.info(single_line_delim) self.logger.info(out) self.logger.info(single_line_delim) self.logger.info("Executable `%s' wrote to stderr:" % executable) self.logger.info(single_line_delim) self.logger.info(err) self.logger.info(single_line_delim) self.result = self.process.returncode


context:
space:
mode: