summaryrefslogtreecommitdiffstats
path: root/scripts/automation/regression/trex.py
blob: aad8f0418782ee409ac5b85106e4413fab0361a3 (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
#!/router/bin/python

import os
import sys
import subprocess
import misc_methods
import re
import signal
import time
from CProgressDisp import TimedProgressBar
from stateful_tests.tests_exceptions import TRexInUseError
import datetime

class CTRexScenario:
    modes            = set() # list of modes of this setup: loopback, virtual etc.
    server_logs      = False
    is_test_list     = False
    is_init          = False
    is_stl_init      = False
    trex_crashed     = False
    configuration    = None
    trex             = None
    stl_trex         = None
    stl_ports_map    = None
    stl_init_error   = None
    router           = None
    router_cfg       = None
    daemon_log_lines = 0
    setup_name       = None
    setup_dir        = None
    router_image     = None
    trex_version     = None
    scripts_path     = None
    benchmark        = None
    report_dir       = 'reports'
    # logger         = None
    test_types       = {'functional_tests': [], 'stateful_tests': [], 'stateless_tests': []}
    is_copied        = False
    GAManager        = None
    no_daemon        = False
    debug_image      = False
    test             = None

class CTRexRunner:
    """This is an instance for generating a CTRexRunner"""

    def __init__ (self, config_dict, yaml):
        self.trex_config = config_dict#misc_methods.load_config_file(config_file)
        self.yaml = yaml


    def get_config (self):
        """ get_config() -> dict

        Returns the stored configuration of the TRex server of the CTRexRunner instance as a dictionary
        """
        return self.trex_config

    def set_yaml_file (self, yaml_path):
        """ update_yaml_file (self, yaml_path) -> None

        Defines the yaml file to be used by the TRex.
        """
        self.yaml = yaml_path


    def generate_run_cmd (self, multiplier, cores, duration, nc = True, export_path="/tmp/trex.txt", **kwargs):
        """ generate_run_cmd(self, multiplier, duration, export_path) -> str

        Generates a custom running command for the kick-off of the TRex traffic generator.
        Returns a command (string) to be issued on the trex server

        Parameters
        ----------
        multiplier : float
            Defines the TRex multiplier factor (platform dependant)
        duration : int
            Defines the duration of the test
        export_path : str
            a full system path to which the results of the trex-run will be logged.

        """
        fileName, fileExtension = os.path.splitext(self.yaml)
        if self.yaml == None:
            raise ValueError('TRex yaml file is not defined')
        elif fileExtension != '.yaml':
            raise TypeError('yaml path is not referencing a .yaml file')

        if 'results_file_path' in kwargs:
            export_path = kwargs['results_file_path']

        trex_cmd_str = './t-rex-64 -c %d -m %f -d %d -f %s '

        if nc:
            trex_cmd_str = trex_cmd_str + ' --nc '

        trex_cmd = trex_cmd_str % (cores,
            multiplier,
            duration,
            self.yaml)
            # self.trex_config['trex_latency'])

        for key, value in kwargs.items():
            tmp_key = key.replace('_','-')
            dash = ' -' if (len(key)==1) else ' --'
            if value == True:
                trex_cmd += (dash + tmp_key)
            else:
                trex_cmd += (dash + '{k} {val}'.format( k = tmp_key, val =  value ))

        print("\nTRex COMMAND: ", trex_cmd)

        cmd = 'sshpass.exp %s %s root "cd %s; %s > %s"' % (self.trex_config['trex_password'],
            self.trex_config['trex_name'],
            self.trex_config['trex_version_path'],
            trex_cmd,
            export_path)

        return cmd;

    def generate_fetch_cmd (self, result_file_full_path="/tmp/trex.txt"):
        """ generate_fetch_cmd(self, result_file_full_path) -> str

        Generates a custom command for which will enable to fetch the resutls of the TRex run.
        Returns a command (string) to be issued on the trex server.

        Example use: fetch_trex_results()                                   -   command that will fetch the content from the default log file- /tmp/trex.txt
                     fetch_trex_results("/tmp/trex_secondary_file.txt")     -   command that will fetch the content from a custom log file- /tmp/trex_secondary_file.txt
        """
        #dir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
        script_running_dir = os.path.dirname(os.path.realpath(__file__))    # get the current script working directory so that the sshpass could be accessed.
        cmd = script_running_dir + '/sshpass.exp %s %s root "cat %s"' % (self.trex_config['trex_password'],
            self.trex_config['trex_name'],
            result_file_full_path);
        return cmd;



    def run (self, multiplier, cores, duration, **kwargs):
        """ run(self, multiplier, duration, results_file_path) -> CTRexResults

        Running the TRex server based on the config file.
        Returns a CTRexResults object containing the results of the run.

        Parameters
        ----------
        multiplier : float
            Defines the TRex multiplier factor (platform dependant)
        duration : int
            Defines the duration of the test
        results_file_path : str
            a full system path to which the results of the trex-run will be logged and fetched from.

        """
        tmp_path = None
        # print kwargs
        if 'export_path' in kwargs:
            tmp_path = kwargs['export_path']
            del kwargs['export_path']
            cmd = self.generate_run_cmd(multiplier, cores, duration, tmp_path, **kwargs)
        else:
            cmd = self.generate_run_cmd(multiplier, cores, duration, **kwargs)

#       print 'TRex complete command to be used:'
#       print cmd
        # print kwargs

        progress_thread = TimedProgressBar(duration)
        progress_thread.start()
        interrupted = False
        try:
            start_time = time.time()
            start = datetime.datetime.now()
            results = subprocess.call(cmd, shell = True, stdout = open(os.devnull, 'wb'))
            end_time = time.time()
            fin = datetime.datetime.now()
            # print "Time difference : ", fin-start
            runtime_deviation =  abs(( (end_time - start_time)/ (duration+15) ) - 1)
            print("runtime_deviation: %2.0f %%" % ( runtime_deviation*100.0))
            if (   runtime_deviation  > 0.6 )  :
                # If the run stopped immediately - classify as Trex in use or reachability issue
                interrupted = True
                if ((end_time - start_time) < 2):
                    raise TRexInUseError ('TRex run failed since TRex is used by another process, or due to reachability issues')
                else:
                    CTRexScenario.trex_crashed = True
            # results = subprocess.Popen(cmd, stdout = open(os.devnull, 'wb'),
            #            shell=True, preexec_fn=os.setsid)
        except KeyboardInterrupt:
            print("\nTRex test interrupted by user during traffic generation!!")
            results.killpg(results.pid, signal.SIGTERM)  # Send the kill signal to all the process groups
            interrupted = True
            raise RuntimeError
        finally:
            progress_thread.join(isPlannedStop = (not interrupted) )

        if results!=0:
            sys.stderr.write("TRex run failed. Please Contact trex-dev mailer for further details")
            sys.stderr.flush()
            return None
        elif interrupted:
            sys.stderr.write("TRex run failed due user-interruption.")
            sys.stderr.flush()
            return None
        else:

            if tmp_path:
                cmd = self.generate_fetch_cmd( tmp_path )#**kwargs)#results_file_path)
            else:
                cmd = self.generate_fetch_cmd()

            try:
                run_log = subprocess.check_output(cmd, shell = True)
                trex_result = CTRexResult(None, run_log)
                trex_result.load_file_lines()
                trex_result.parse()

                return trex_result

            except subprocess.CalledProcessError:
                sys.stderr.write("TRex result fetching failed. Please Contact trex-dev mailer for further details")
                sys.stderr.flush()
                return None

class CTRexResult():
    """This is an instance for generating a CTRexResult"""
    def __init__ (self, file, buffer = None):
        self.file = file
        self.buffer = buffer
        self.result = {}


    def load_file_lines (self):
        """ load_file_lines(self) -> None

        Loads into the self.lines the content of self.file
        """
        if self.buffer:
            self.lines = self.buffer.split("\n")
        else:
            f = open(self.file,'r')
            self.lines = f.readlines()
            f.close()


    def dump (self):
        """ dump(self) -> None

        Prints nicely the content of self.result dictionary into the screen
        """
        for key, value in self.result.items():
            print("{0:20} : \t{1}".format(key, float(value)))

    def update (self, key, val, _str):
        """ update (self, key, val, _str) -> None

        Updates the self.result[key] with a possibly new value representation of val
        Example: 15K might be updated into 15000.0

        Parameters
        ----------
        key :
            Key of the self.result dictionary of the TRexResult instance
        val : float
            Key of the self.result dictionary of the TRexResult instance
        _str : str
            a represntation of the BW (.

        """

        s = _str.strip()

        if s[0]=="G":
            val = val*1E9
        elif s[0]=="M":
            val = val*1E6
        elif s[0]=="K":
            val = val*1E3

        if key in self.result:
            if self.result[key] > 0:
                if (val/self.result[key] > 0.97 ):
                    self.result[key]= val
            else:
                self.result[key] = val
        else:
            self.result[key] = val



    def parse (self):
        """ parse(self) -> None

        Parse the content of the result file from the TRex test and upload the data into
        """
        stop_read = False
        d = {
            'total-tx'      : 0,
            'total-rx'      : 0,
            'total-pps'     : 0,
            'total-cps'     : 0,

            'expected-pps'  : 0,
            'expected-cps'  : 0,
            'expected-bps'  : 0,
            'active-flows'  : 0,
            'open-flows'    : 0
        }

        self.error = ""

        # Parse the output of the test, line by line (each line matches another RegEx and as such
        # different rules apply
        for line in self.lines:
            match = re.match(".*/var/run/.rte_config.*", line)
            if match:
                stop_read = True
                continue

            #Total-Tx        :     462.42 Mbps   Nat_time_out    :        0   ==> we try to parse the next decimal in this case Nat_time_out
#           match = re.match("\W*(\w(\w|[-])+)\W*([:]|[=])\W*(\d+[.]\d+)\W*\w+\W+(\w+)\W*([:]|[=])\W*(\d+)(.*)", line);
#           if match:
#               key = misc_methods.mix_string(match.group(5))
#               val = float(match.group(7))
#               # continue to parse !! we try the second
#               self.result[key] = val #update latest

            # check if we need to stop reading
            match = re.match(".*latency daemon has stopped.*", line)
            if match:
                stop_read = True
                continue

            match = re.match("\W*(\w(\w|[-])+)\W*([:]|[=])\W*(\d+[.]\d+)(.*ps)\s+(\w+)\W*([:]|[=])\W*(\d+)", line)
            if match:
                key = misc_methods.mix_string(match.group(1))
                val = float(match.group(4))
                if key in d:
                   if stop_read == False:
                       self.update (key, val, match.group(5))
                else:
                    self.result[key] = val # update latest
                key2 = misc_methods.mix_string(match.group(6))
                val2 = int(match.group(8))
                self.result[key2] = val2 # always take latest


            match = re.match("\W*(\w(\w|[-])+)\W*([:]|[=])\W*(\d+[.]\d+)(.*)", line)
            if match:
               key = misc_methods.mix_string(match.group(1))
               val = float(match.group(4))
               if key in d:
                   if stop_read == False:
                       self.update (key, val, match.group(5))
               else:
                    self.result[key] = val # update latest
               continue

            match = re.match("\W*(\w(\w|[-])+)\W*([:]|[=])\W*(\d+)(.*)", line)
            if match:
                key = misc_methods.mix_string(match.group(1))
                val = float(match.group(4))
                self.result[key] = val #update latest
                continue

            match = re.match("\W*(\w(\w|[-])+)\W*([:]|[=])\W*(OK)(.*)", line)
            if match:
                key = misc_methods.mix_string(match.group(1))
                val = 0 # valid
                self.result[key] = val #update latest
                continue

            match = re.match("\W*(Cpu Utilization)\W*([:]|[=])\W*(\d+[.]\d+)  %(.*)", line)
            if match:
                key = misc_methods.mix_string(match.group(1))
                val = float(match.group(3))
                if key in self.result:
                    if (self.result[key] < val): # update only if larger than previous value
                        self.result[key] = val
                else:
                    self.result[key] = val
                continue

            match = re.match(".*(rx_check\s.*)\s+:\s+(\w+)", line)
            if match:
                key = misc_methods.mix_string(match.group(1))
                try:
                    val = int(match.group(2))
                except ValueError: # corresponds with rx_check validation case
                    val = match.group(2)
                finally:
                    self.result[key] = val
                continue


    def get_status (self, drop_expected = False):
        if (self.error != ""):
            print(self.error)
            return (self.STATUS_ERR_FATAL)

        d = self.result

        # test for latency
        latency_limit = 5000
        if ( d['maximum-latency'] > latency_limit ):
            self.reason="Abnormal latency measured (higher than %s" % latency_limit
            return self.STATUS_ERR_LATENCY

        # test for drops
        if drop_expected == False:
            if ( d['total-pkt-drop'] > 0 ):
                self.reason=" At least one packet dropped "
                return self.STATUS_ERR_DROP

        # test for rx/tx distance
        rcv_vs_tx = d['total-tx']/d['total-rx']
        if ( (rcv_vs_tx >1.2) or (rcv_vs_tx <0.9) ):
            self.reason="rx and tx should be close"
            return self.STATUS_ERR_RX_TX_DISTANCE

        # expected measurement
        expect_vs_measued=d['total-tx']/d['expected-bps']
        if ( (expect_vs_measued >1.1) or (expect_vs_measued < 0.9) ) :
            print(expect_vs_measued)
            print(d['total-tx'])
            print(d['expected-bps'])
            self.reason="measure is not as expected"
            return self.STATUS_ERR_BAD_EXPECTED_MEASUREMENT

        if ( d['latency-any-error'] !=0 ):
            self.reason=" latency-any-error has error"
            return self.STATUS_ERR_LATENCY_ANY_ERROR

        return self.STATUS_OK

        # return types
        STATUS_OK = 0
        STATUS_ERR_FATAL = 1
        STATUS_ERR_LATENCY = 2
        STATUS_ERR_DROP = 3
        STATUS_ERR_RX_TX_DISTANCE = 4
        STATUS_ERR_BAD_EXPECTED_MEASUREMENT = 5,
        STATUS_ERR_LATENCY_ANY_ERROR = 6

def test_TRex_result_parser():
    t=CTRexResult('trex.txt');
    t.load_file_lines()
    t.parse()
    print(t.result)




if __name__ == "__main__":
    #test_TRex_result_parser();
    pass