summaryrefslogtreecommitdiffstats
path: root/testcases/testcase.py
blob: 1437aeaef35fee81d02f8ad5ef823b9254770c90 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
# Copyright 2015-2016 Intel Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""TestCase base class
"""

import csv
import os
import time
import logging
import subprocess
import copy
from collections import OrderedDict

import core.component_factory as component_factory
from core.loader import Loader
from core.results.results_constants import ResultsConstants
from tools import tasks
from tools import hugepages
from tools import functions
from tools.pkt_gen.trafficgen.trafficgenhelper import TRAFFIC_DEFAULTS
from conf import settings as S
from conf import get_test_param

class TestCase(object):
    """TestCase base class

    In this basic form runs RFC2544 throughput test
    """
    def __init__(self, cfg):
        """Pull out fields from test config

        :param cfg: A dictionary of string-value pairs describing the test
            configuration. Both the key and values strings use well-known
            values.
        :param results_dir: Where the csv formatted results are written.
        """
        self._testcase_start_time = time.time()
        self._hugepages_mounted = False
        self._traffic_ctl = None
        self._vnf_ctl = None
        self._vswitch_ctl = None
        self._collector = None
        self._loadgen = None
        self._output_file = None
        self._tc_results = None
        self.guest_loopback = []
        self._settings_original = {}
        self._settings_paths_modified = False
        self._testcast_run_time = None

        self._update_settings('VSWITCH', cfg.get('vSwitch', S.getValue('VSWITCH')))
        self._update_settings('VNF', cfg.get('VNF', S.getValue('VNF')))
        self._update_settings('TRAFFICGEN', cfg.get('Trafficgen', S.getValue('TRAFFICGEN')))
        self._update_settings('TEST_PARAMS', cfg.get('Parameters', S.getValue('TEST_PARAMS')))

        # update global settings
        guest_loopback = get_test_param('guest_loopback', None)
        if guest_loopback:
            self._update_settings('GUEST_LOOPBACK', [guest_loopback for dummy in S.getValue('GUEST_LOOPBACK')])

        if 'VSWITCH' in self._settings_original or 'VNF' in self._settings_original:
            self._settings_original.update({
                'RTE_SDK' : S.getValue('RTE_SDK'),
                'OVS_DIR' : S.getValue('OVS_DIR'),
            })
            functions.settings_update_paths()

        # set test parameters; CLI options take precedence to testcase settings
        self._logger = logging.getLogger(__name__)
        self.name = cfg['Name']
        self.desc = cfg.get('Description', 'No description given.')
        self.test = cfg.get('TestSteps', None)

        bidirectional = cfg.get('biDirectional', TRAFFIC_DEFAULTS['bidir'])
        bidirectional = get_test_param('bidirectional', bidirectional)
        if not isinstance(bidirectional, str):
            raise TypeError(
                'Bi-dir value must be of type string in testcase configuration')
        bidirectional = bidirectional.title()  # Keep things consistent

        traffic_type = cfg.get('Traffic Type', TRAFFIC_DEFAULTS['traffic_type'])
        traffic_type = get_test_param('traffic_type', traffic_type)

        framerate = cfg.get('iLoad', TRAFFIC_DEFAULTS['frame_rate'])
        framerate = get_test_param('iload', framerate)

        self.deployment = cfg['Deployment']
        self._frame_mod = cfg.get('Frame Modification', None)

        self._tunnel_type = None
        self._tunnel_operation = None

        if self.deployment == 'op2p':
            self._tunnel_operation = cfg['Tunnel Operation']

            if 'Tunnel Type' in cfg:
                self._tunnel_type = cfg['Tunnel Type']
                self._tunnel_type = get_test_param('tunnel_type',
                                                   self._tunnel_type)

        # identify guest loopback method, so it can be added into reports
        if self.deployment == 'pvp':
            self.guest_loopback.append(S.getValue('GUEST_LOOPBACK')[0])
        else:
            self.guest_loopback = S.getValue('GUEST_LOOPBACK').copy()

        # read configuration of streams; CLI parameter takes precedence to
        # testcase definition
        multistream = cfg.get('MultiStream', TRAFFIC_DEFAULTS['multistream'])
        multistream = get_test_param('multistream', multistream)
        stream_type = cfg.get('Stream Type', TRAFFIC_DEFAULTS['stream_type'])
        stream_type = get_test_param('stream_type', stream_type)
        pre_installed_flows = cfg.get('Pre-installed Flows', TRAFFIC_DEFAULTS['pre_installed_flows'])
        pre_installed_flows = get_test_param('pre-installed_flows', pre_installed_flows)

        # check if test requires background load and which generator it uses
        self._load_cfg = cfg.get('Load', None)
        if self._load_cfg and 'tool' in self._load_cfg:
            self._loadgen = self._load_cfg['tool']
        else:
            # background load is not requested, so use dummy implementation
            self._loadgen = "Dummy"

        if self._frame_mod:
            self._frame_mod = self._frame_mod.lower()
        self._results_dir = S.getValue('RESULTS_PATH')

        # set traffic details, so they can be passed to vswitch and traffic ctls
        self._traffic = copy.deepcopy(TRAFFIC_DEFAULTS)
        self._traffic.update({'traffic_type': traffic_type,
                              'flow_type': cfg.get('Flow Type', TRAFFIC_DEFAULTS['flow_type']),
                              'bidir': bidirectional,
                              'tunnel_type': self._tunnel_type,
                              'multistream': int(multistream),
                              'stream_type': stream_type,
                              'pre_installed_flows' : pre_installed_flows,
                              'frame_rate': int(framerate)})

        # Packet Forwarding mode
        self._vswitch_none = 'none' == S.getValue('VSWITCH').strip().lower()

        # OVS Vanilla requires guest VM MAC address and IPs to work
        if 'linux_bridge' in self.guest_loopback:
            self._traffic['l2'].update({'srcmac': S.getValue('GUEST_NET2_MAC')[0],
                                        'dstmac': S.getValue('GUEST_NET1_MAC')[0]})
            self._traffic['l3'].update({'srcip': S.getValue('VANILLA_TGEN_PORT1_IP'),
                                        'dstip': S.getValue('VANILLA_TGEN_PORT2_IP')})

        # trafficgen configuration required for tests of tunneling protocols
        if self.deployment == "op2p":
            self._traffic['l2'].update({'srcmac':
                                        S.getValue('TRAFFICGEN_PORT1_MAC'),
                                        'dstmac':
                                        S.getValue('TRAFFICGEN_PORT2_MAC')})

            self._traffic['l3'].update({'srcip':
                                        S.getValue('TRAFFICGEN_PORT1_IP'),
                                        'dstip':
                                        S.getValue('TRAFFICGEN_PORT2_IP')})

            if self._tunnel_operation == "decapsulation":
                self._traffic['l2'] = S.getValue(self._tunnel_type.upper() + '_FRAME_L2')
                self._traffic['l3'] = S.getValue(self._tunnel_type.upper() + '_FRAME_L3')
                self._traffic['l4'] = S.getValue(self._tunnel_type.upper() + '_FRAME_L4')
        elif S.getValue('NICS')[0]['type'] == 'vf' or S.getValue('NICS')[1]['type'] == 'vf':
            mac1 = S.getValue('NICS')[0]['mac']
            mac2 = S.getValue('NICS')[1]['mac']
            if mac1 and mac2:
                self._traffic['l2'].update({'srcmac': mac2, 'dstmac': mac1})
            else:
                self._logger.debug("MAC addresses can not be read")

    def run_initialize(self):
        """ Prepare test execution environment
        """
        self._logger.debug(self.name)

        # mount hugepages if needed
        self._mount_hugepages()

        # copy sources of l2 forwarding tools into VM shared dir if needed
        self._copy_fwd_tools_for_all_guests()

        self._logger.debug("Controllers:")
        loader = Loader()
        self._traffic_ctl = component_factory.create_traffic(
            self._traffic['traffic_type'],
            loader.get_trafficgen_class())

        self._vnf_ctl = component_factory.create_vnf(
            self.deployment,
            loader.get_vnf_class())

        if self._vswitch_none:
            self._vswitch_ctl = component_factory.create_pktfwd(
                self.deployment,
                loader.get_pktfwd_class())
        else:
            self._vswitch_ctl = component_factory.create_vswitch(
                self.deployment,
                loader.get_vswitch_class(),
                self._traffic,
                self._tunnel_operation)

        self._collector = component_factory.create_collector(
            loader.get_collector_class(),
            self._results_dir, self.name)
        self._loadgen = component_factory.create_loadgen(
            self._loadgen,
            self._load_cfg)

        self._output_file = os.path.join(self._results_dir, "result_" + self.name +
                                         "_" + self.deployment + ".csv")

        self._logger.debug("Setup:")

    def run_finalize(self):
        """ Tear down test execution environment and record test results
        """
        # umount hugepages if mounted
        self._umount_hugepages()

        # restore original settings
        S.load_from_dict(self._settings_original)

    def run_report(self):
        """ Report test results
        """
        self._logger.debug("self._collector Results:")
        self._collector.print_results()

        if S.getValue('mode') != 'trafficgen-off':
            self._logger.debug("Traffic Results:")
            self._traffic_ctl.print_results()

            self._tc_results = self._append_results(self._traffic_ctl.get_results())
            TestCase._write_result_to_file(self._tc_results, self._output_file)

    def run(self):
        """Run the test

        All setup and teardown through controllers is included.
        """
        # prepare test execution environment
        self.run_initialize()

        with self._vswitch_ctl, self._loadgen:
            with self._vnf_ctl, self._collector:
                if not self._vswitch_none:
                    self._add_flows()

                # run traffic generator if requested, otherwise wait for manual termination
                if S.getValue('mode') == 'trafficgen-off':
                    time.sleep(2)
                    self._logger.debug("All is set. Please run traffic generator manually.")
                    input(os.linesep + "Press Enter to terminate vswitchperf..." + os.linesep + os.linesep)
                else:
                    if S.getValue('mode') == 'trafficgen-pause':
                        time.sleep(2)
                        true_vals = ('yes', 'y', 'ye', None)
                        while True:
                            choice = input(os.linesep + 'Transmission paused, should'
                                           ' transmission be resumed? ' + os.linesep).lower()
                            if not choice or choice not in true_vals:
                                print('Please respond with \'yes\' or \'y\' ', end='')
                            else:
                                break
                    with self._traffic_ctl:
                        self._traffic_ctl.send_traffic(self._traffic)

                    # dump vswitch flows before they are affected by VNF termination
                    if not self._vswitch_none:
                        self._vswitch_ctl.dump_vswitch_flows()

        # tear down test execution environment and log results
        self.run_finalize()

        self._testcase_run_time = time.strftime("%H:%M:%S",
                                  time.gmtime(time.time() - self._testcase_start_time))
        logging.info("Testcase execution time: " + self._testcase_run_time)
        # report test results
        self.run_report()

    def _update_settings(self, param, value):
        """ Check value of given configuration parameter
        In case that new value is different, then testcase
        specific settings is updated and original value stored

        :param param: Name of parameter inside settings
        :param value: Disired parameter value
        """
        orig_value = S.getValue(param)
        if orig_value != value:
            self._settings_original[param] = orig_value
            S.setValue(param, value)

    def _append_results(self, results):
        """
        Method appends mandatory Test Case results to list of dictionaries.

        :param results: list of dictionaries which contains results from
                traffic generator.

        :returns: modified list of dictionaries.
        """
        for item in results:
            item[ResultsConstants.ID] = self.name
            item[ResultsConstants.DEPLOYMENT] = self.deployment
            item[ResultsConstants.TRAFFIC_TYPE] = self._traffic['l3']['proto']
            item[ResultsConstants.TEST_RUN_TIME] = self._testcase_run_time
            if self._traffic['multistream']:
                item[ResultsConstants.SCAL_STREAM_COUNT] = self._traffic['multistream']
                item[ResultsConstants.SCAL_STREAM_TYPE] = self._traffic['stream_type']
                item[ResultsConstants.SCAL_PRE_INSTALLED_FLOWS] = self._traffic['pre_installed_flows']
            if self.deployment in ['pvp', 'pvvp'] and len(self.guest_loopback):
                item[ResultsConstants.GUEST_LOOPBACK] = ' '.join(self.guest_loopback)
            if self._tunnel_type:
                item[ResultsConstants.TUNNEL_TYPE] = self._tunnel_type
        return results

    def _copy_fwd_tools_for_all_guests(self):
        """Copy dpdk and l2fwd code to GUEST_SHARE_DIR[s] based on selected deployment.
        """
        # data are copied only for pvp and pvvp, so let's count number of 'v'
        counter = 1
        while counter <= self.deployment.count('v'):
            self._copy_fwd_tools_for_guest(counter)
            counter += 1

    def _copy_fwd_tools_for_guest(self, index):
        """Copy dpdk and l2fwd code to GUEST_SHARE_DIR of VM

        :param index: Index of VM starting from 1 (i.e. 1st VM has index 1)
        """
        guest_dir = S.getValue('GUEST_SHARE_DIR')[index-1]

        # remove shared dir if it exists to avoid issues with file consistency
        if os.path.exists(guest_dir):
            tasks.run_task(['rm', '-f', '-r', guest_dir], self._logger,
                           'Removing content of shared directory...', True)

        # directory to share files between host and guest
        os.makedirs(guest_dir)

        # copy sources into shared dir only if neccessary
        if 'testpmd' in self.guest_loopback or 'l2fwd' in self.guest_loopback:
            try:
                tasks.run_task(['rsync', '-a', '-r', '-l', r'--exclude="\.git"',
                                os.path.join(S.getValue('RTE_SDK'), ''),
                                os.path.join(guest_dir, 'DPDK')],
                               self._logger,
                               'Copying DPDK to shared directory...',
                               True)
                tasks.run_task(['rsync', '-a', '-r', '-l',
                                os.path.join(S.getValue('ROOT_DIR'), 'src/l2fwd/'),
                                os.path.join(guest_dir, 'l2fwd')],
                               self._logger,
                               'Copying l2fwd to shared directory...',
                               True)
            except subprocess.CalledProcessError:
                self._logger.error('Unable to copy DPDK and l2fwd to shared directory')


    def _mount_hugepages(self):
        """Mount hugepages if usage of DPDK or Qemu is detected
        """
        # hugepages are needed by DPDK and Qemu
        if not self._hugepages_mounted and \
            (self.deployment.count('v') or \
             S.getValue('VSWITCH').lower().count('dpdk') or \
             self._vswitch_none or \
             self.test and 'vnf' in [step[0][0:3] for step in self.test]):
            hugepages.mount_hugepages()
            self._hugepages_mounted = True

    def _umount_hugepages(self):
        """Umount hugepages if they were mounted before
        """
        if self._hugepages_mounted:
            hugepages.umount_hugepages()
            self._hugepages_mounted = False

    @staticmethod
    def _write_result_to_file(results, output):
        """Write list of dictionaries to a CSV file.

        Each element on list will create separate row in output file.
        If output file already exists, data will be appended at the end,
        otherwise it will be created.

        :param results: list of dictionaries.
        :param output: path to output file.
        """
        with open(output, 'a') as csvfile:

            logging.info("Write results to file: " + output)
            fieldnames = TestCase._get_unique_keys(results)

            writer = csv.DictWriter(csvfile, fieldnames)

            if not csvfile.tell():  # file is now empty
                writer.writeheader()

            for result in results:
                writer.writerow(result)

    @staticmethod
    def _get_unique_keys(list_of_dicts):
        """Gets unique key values as ordered list of strings in given dicts

        :param list_of_dicts: list of dictionaries.

        :returns: list of unique keys(strings).
        """
        result = OrderedDict()
        for item in list_of_dicts:
            for key in item.keys():
                result[key] = ''

        return list(result.keys())

    def _add_flows(self):
        """Add flows to the vswitch
        """
        vswitch = self._vswitch_ctl.get_vswitch()
        # TODO BOM 15-08-07 the frame mod code assumes that the
        # physical ports are ports 1 & 2. The actual numbers
        # need to be retrived from the vSwitch and the metadata value
        # updated accordingly.
        bridge = S.getValue('VSWITCH_BRIDGE_NAME')
        if self._frame_mod == "vlan":
            # 0x8100 => VLAN ethertype
            self._logger.debug(" ****   VLAN   ***** ")
            flow = {'table':'2', 'priority':'1000', 'metadata':'2',
                    'actions': ['push_vlan:0x8100', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
            flow = {'table':'2', 'priority':'1000', 'metadata':'1',
                    'actions': ['push_vlan:0x8100', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
        elif self._frame_mod == "mpls":
            # 0x8847 => MPLS unicast ethertype
            self._logger.debug(" ****   MPLS  ***** ")
            flow = {'table':'2', 'priority':'1000', 'metadata':'2',
                    'actions': ['push_mpls:0x8847', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
            flow = {'table':'2', 'priority':'1000', 'metadata':'1',
                    'actions': ['push_mpls:0x8847', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
        elif self._frame_mod == "mac":
            flow = {'table':'2', 'priority':'1000', 'metadata':'2',
                    'actions': ['mod_dl_src:22:22:22:22:22:22',
                                'goto_table:3']}
            vswitch.add_flow(bridge, flow)
            flow = {'table':'2', 'priority':'1000', 'metadata':'1',
                    'actions': ['mod_dl_src:11:11:11:11:11:11',
                                'goto_table:3']}
            vswitch.add_flow(bridge, flow)
        elif self._frame_mod == "dscp":
            # DSCP 184d == 0x4E<<2 => 'Expedited Forwarding'
            flow = {'table':'2', 'priority':'1000', 'metadata':'2',
                    'dl_type':'0x0800',
                    'actions': ['mod_nw_tos:184', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
            flow = {'table':'2', 'priority':'1000', 'metadata':'1',
                    'dl_type':'0x0800',
                    'actions': ['mod_nw_tos:184', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
        elif self._frame_mod == "ttl":
            # 251 and 241 are the highest prime numbers < 255
            flow = {'table':'2', 'priority':'1000', 'metadata':'2',
                    'dl_type':'0x0800',
                    'actions': ['mod_nw_ttl:251', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
            flow = {'table':'2', 'priority':'1000', 'metadata':'1',
                    'dl_type':'0x0800',
                    'actions': ['mod_nw_ttl:241', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
        elif self._frame_mod == "ip_addr":
            flow = {'table':'2', 'priority':'1000', 'metadata':'2',
                    'dl_type':'0x0800',
                    'actions': ['mod_nw_src:10.10.10.10',
                                'mod_nw_dst:20.20.20.20',
                                'goto_table:3']}
            vswitch.add_flow(bridge, flow)
            flow = {'table':'2', 'priority':'1000', 'metadata':'1',
                    'dl_type':'0x0800',
                    'actions': ['mod_nw_src:20.20.20.20',
                                'mod_nw_dst:10.10.10.10',
                                'goto_table:3']}
            vswitch.add_flow(bridge, flow)
        elif self._frame_mod == "ip_port":
            # TODO BOM 15-08-27 The traffic generated is assumed
            # to be UDP (nw_proto 17d) which is the default case but
            # we will need to pick up the actual traffic params in use.
            flow = {'table':'2', 'priority':'1000', 'metadata':'2',
                    'dl_type':'0x0800', 'nw_proto':'17',
                    'actions': ['mod_tp_src:44444',
                                'mod_tp_dst:44444', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
            flow = {'table':'2', 'priority':'1000', 'metadata':'1',
                    'dl_type':'0x0800', 'nw_proto':'17',
                    'actions': ['mod_tp_src:44444',
                                'mod_tp_dst:44444', 'goto_table:3']}
            vswitch.add_flow(bridge, flow)
        else:
            pass