app/test/autotest_runner.py

   1 #!/usr/bin/python
   2
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  33
  34 # The main logic behind running autotests in parallel
  35
  36 import multiprocessing, subprocess, sys, pexpect, re, time, os, StringIO, csv
  37
  38 # wait for prompt
  39 def wait_prompt(child):
  40         try:
  41                 child.sendline()
  42                 result = child.expect(["RTE>>", pexpect.TIMEOUT, pexpect.EOF],
  43                         timeout = 120)
  44         except:
  45                 return False
  46         if result == 0:
  47                 return True
  48         else:
  49                 return False
  50
  51 # run a test group
  52 # each result tuple in results list consists of:
  53 #   result value (0 or -1)
  54 #   result string
  55 #   test name
  56 #   total test run time (double)
  57 #   raw test log
  58 #   test report (if not available, should be None)
  59 #
  60 # this function needs to be outside AutotestRunner class
  61 # because otherwise Pool won't work (or rather it will require
  62 # quite a bit of effort to make it work).
  63 def run_test_group(cmdline, test_group):
  64         results = []
  65         child = None
  66         start_time = time.time()
  67         startuplog = None
  68
  69         # run test app
  70         try:
  71                 # prepare logging of init
  72                 startuplog = StringIO.StringIO()
  73
  74                 print >>startuplog, "\n%s %s\n" % ("="*20, test_group["Prefix"])
  75                 print >>startuplog, "\ncmdline=%s" % cmdline
  76
  77                 child = pexpect.spawn(cmdline, logfile=startuplog)
  78
  79                 # wait for target to boot
  80                 if not wait_prompt(child):
  81                         child.close()
  82
  83                         results.append((-1, "Fail [No prompt]", "Start %s" % test_group["Prefix"],
  84                                 time.time() - start_time, startuplog.getvalue(), None))
  85
  86                         # mark all tests as failed
  87                         for test in test_group["Tests"]:
  88                                 results.append((-1, "Fail [No prompt]", test["Name"],
  89                                 time.time() - start_time, "", None))
  90                         # exit test
  91                         return results
  92
  93         except:
  94                 results.append((-1, "Fail [Can't run]", "Start %s" % test_group["Prefix"],
  95                                 time.time() - start_time, startuplog.getvalue(), None))
  96
  97                 # mark all tests as failed
  98                 for t in test_group["Tests"]:
  99                         results.append((-1, "Fail [Can't run]", t["Name"],
 100                                 time.time() - start_time, "", None))
 101                 # exit test
 102                 return results
 103
 104         # startup was successful
 105         results.append((0, "Success", "Start %s" % test_group["Prefix"],
 106                 time.time() - start_time, startuplog.getvalue(), None))
 107
 108         # parse the binary for available test commands
 109         binary = cmdline.split()[0]
 110         symbols = subprocess.check_output(['nm', binary]).decode('utf-8')
 111         avail_cmds = re.findall('test_register_(\w+)', symbols)
 112
 113         # run all tests in test group
 114         for test in test_group["Tests"]:
 115
 116                 # create log buffer for each test
 117                 # in multiprocessing environment, the logging would be
 118                 # interleaved and will create a mess, hence the buffering
 119                 logfile = StringIO.StringIO()
 120                 child.logfile = logfile
 121
 122                 result = ()
 123
 124                 # make a note when the test started
 125                 start_time = time.time()
 126
 127                 try:
 128                         # print test name to log buffer
 129                         print >>logfile, "\n%s %s\n" % ("-"*20, test["Name"])
 130
 131                         # run test function associated with the test
 132                         if test["Command"] in avail_cmds:
 133                                 result = test["Func"](child, test["Command"])
 134                         else:
 135                                 result = (0, "Skipped [Not Available]")
 136
 137                         # make a note when the test was finished
 138                         end_time = time.time()
 139
 140                         # append test data to the result tuple
 141                         result += (test["Name"], end_time - start_time,
 142                                 logfile.getvalue())
 143
 144                         # call report function, if any defined, and supply it with
 145                         # target and complete log for test run
 146                         if test["Report"]:
 147                                 report = test["Report"](self.target, log)
 148
 149                                 # append report to results tuple
 150                                 result += (report,)
 151                         else:
 152                                 # report is None
 153                                 result += (None,)
 154                 except:
 155                         # make a note when the test crashed
 156                         end_time = time.time()
 157
 158                         # mark test as failed
 159                         result = (-1, "Fail [Crash]", test["Name"],
 160                                 end_time - start_time, logfile.getvalue(), None)
 161                 finally:
 162                         # append the results to the results list
 163                         results.append(result)
 164
 165         # regardless of whether test has crashed, try quitting it
 166         try:
 167                 child.sendline("quit")
 168                 child.close()
 169         # if the test crashed, just do nothing instead
 170         except:
 171                 # nop
 172                 pass
 173
 174         # return test results
 175         return results
 176
 177
 178
 179
 180
 181 # class representing an instance of autotests run
 182 class AutotestRunner:
 183         cmdline = ""
 184         parallel_test_groups = []
 185         non_parallel_test_groups = []
 186         logfile = None
 187         csvwriter = None
 188         target = ""
 189         start = None
 190         n_tests = 0
 191         fails = 0
 192         log_buffers = []
 193         blacklist = []
 194         whitelist = []
 195
 196
 197         def __init__(self, cmdline, target, blacklist, whitelist):
 198                 self.cmdline = cmdline
 199                 self.target = target
 200                 self.blacklist = blacklist
 201                 self.whitelist = whitelist
 202
 203                 # log file filename
 204                 logfile = "%s.log" % target
 205                 csvfile = "%s.csv" % target
 206
 207                 self.logfile = open(logfile, "w")
 208                 csvfile = open(csvfile, "w")
 209                 self.csvwriter = csv.writer(csvfile)
 210
 211                 # prepare results table
 212                 self.csvwriter.writerow(["test_name","test_result","result_str"])
 213
 214
 215
 216         # set up cmdline string
 217         def __get_cmdline(self, test):
 218                 cmdline = self.cmdline
 219
 220                 # append memory limitations for each test
 221                 # otherwise tests won't run in parallel
 222                 if not "i686" in self.target:
 223                         cmdline += " --socket-mem=%s"% test["Memory"]
 224                 else:
 225                         # affinitize startup so that tests don't fail on i686
 226                         cmdline = "taskset 1 " + cmdline
 227                         cmdline += " -m " + str(sum(map(int,test["Memory"].split(","))))
 228
 229                 # set group prefix for autotest group
 230                 # otherwise they won't run in parallel
 231                 cmdline += " --file-prefix=%s"% test["Prefix"]
 232
 233                 return cmdline
 234
 235
 236
 237         def add_parallel_test_group(self,test_group):
 238                 self.parallel_test_groups.append(test_group)
 239
 240         def add_non_parallel_test_group(self,test_group):
 241                 self.non_parallel_test_groups.append(test_group)
 242
 243
 244         def __process_results(self, results):
 245                 # this iterates over individual test results
 246                 for i, result in enumerate(results):
 247
 248                         # increase total number of tests that were run
 249                         # do not include "start" test
 250                         if i > 0:
 251                                 self.n_tests += 1
 252
 253                         # unpack result tuple
 254                         test_result, result_str, test_name, \
 255                                 test_time, log, report = result
 256
 257                         # get total run time
 258                         cur_time = time.time()
 259                         total_time = int(cur_time - self.start)
 260
 261                         # print results, test run time and total time since start
 262                         print ("%s:" % test_name).ljust(30),
 263                         print result_str.ljust(29),
 264                         print "[%02dm %02ds]" % (test_time / 60, test_time % 60),
 265
 266                         # don't print out total time every line, it's the same anyway
 267                         if i == len(results) - 1:
 268                                 print "[%02dm %02ds]" % (total_time / 60, total_time % 60)
 269                         else:
 270                                 print ""
 271
 272                         # if test failed and it wasn't a "start" test
 273                         if test_result < 0 and not i == 0:
 274                                 self.fails += 1
 275
 276                         # collect logs
 277                         self.log_buffers.append(log)
 278
 279                         # create report if it exists
 280                         if report:
 281                                 try:
 282                                         f = open("%s_%s_report.rst" % (self.target,test_name), "w")
 283                                 except IOError:
 284                                         print "Report for %s could not be created!" % test_name
 285                                 else:
 286                                         with f:
 287                                                 f.write(report)
 288
 289                         # write test result to CSV file
 290                         if i != 0:
 291                                 self.csvwriter.writerow([test_name, test_result, result_str])
 292
 293
 294
 295
 296         # this function iterates over test groups and removes each
 297         # test that is not in whitelist/blacklist
 298         def __filter_groups(self, test_groups):
 299                 groups_to_remove = []
 300
 301                 # filter out tests from parallel test groups
 302                 for i, test_group in enumerate(test_groups):
 303
 304                         # iterate over a copy so that we could safely delete individual tests
 305                         for test in test_group["Tests"][:]:
 306                                 test_id = test["Command"]
 307
 308                                 # dump tests are specified in full e.g. "Dump_mempool"
 309                                 if "_autotest" in test_id:
 310                                         test_id = test_id[:-len("_autotest")]
 311
 312                                 # filter out blacklisted/whitelisted tests
 313                                 if self.blacklist and test_id in self.blacklist:
 314                                         test_group["Tests"].remove(test)
 315                                         continue
 316                                 if self.whitelist and test_id not in self.whitelist:
 317                                         test_group["Tests"].remove(test)
 318                                         continue
 319
 320                         # modify or remove original group
 321                         if len(test_group["Tests"]) > 0:
 322                                 test_groups[i] = test_group
 323                         else:
 324                                 # remember which groups should be deleted
 325                                 # put the numbers backwards so that we start
 326                                 # deleting from the end, not from the beginning
 327                                 groups_to_remove.insert(0, i)
 328
 329                 # remove test groups that need to be removed
 330                 for i in groups_to_remove:
 331                         del test_groups[i]
 332
 333                 return test_groups
 334
 335
 336
 337         # iterate over test groups and run tests associated with them
 338         def run_all_tests(self):
 339                 # filter groups
 340                 self.parallel_test_groups = \
 341                         self.__filter_groups(self.parallel_test_groups)
 342                 self.non_parallel_test_groups = \
 343                         self.__filter_groups(self.non_parallel_test_groups)
 344
 345                 # create a pool of worker threads
 346                 pool = multiprocessing.Pool(processes=1)
 347
 348                 results = []
 349
 350                 # whatever happens, try to save as much logs as possible
 351                 try:
 352
 353                         # create table header
 354                         print ""
 355                         print "Test name".ljust(30),
 356                         print "Test result".ljust(29),
 357                         print "Test".center(9),
 358                         print "Total".center(9)
 359                         print "=" * 80
 360
 361                         # make a note of tests start time
 362                         self.start = time.time()
 363
 364                         # assign worker threads to run test groups
 365                         for test_group in self.parallel_test_groups:
 366                                 result = pool.apply_async(run_test_group,
 367                                         [self.__get_cmdline(test_group), test_group])
 368                                 results.append(result)
 369
 370                         # iterate while we have group execution results to get
 371                         while len(results) > 0:
 372
 373                                 # iterate over a copy to be able to safely delete results
 374                                 # this iterates over a list of group results
 375                                 for group_result in results[:]:
 376
 377                                         # if the thread hasn't finished yet, continue
 378                                         if not group_result.ready():
 379                                                 continue
 380
 381                                         res = group_result.get()
 382
 383                                         self.__process_results(res)
 384
 385                                         # remove result from results list once we're done with it
 386                                         results.remove(group_result)
 387
 388                         # run non_parallel tests. they are run one by one, synchronously
 389                         for test_group in self.non_parallel_test_groups:
 390                                 group_result = run_test_group(self.__get_cmdline(test_group), test_group)
 391
 392                                 self.__process_results(group_result)
 393
 394                         # get total run time
 395                         cur_time = time.time()
 396                         total_time = int(cur_time - self.start)
 397
 398                         # print out summary
 399                         print "=" * 80
 400                         print "Total run time: %02dm %02ds" % (total_time / 60, total_time % 60)
 401                         if self.fails != 0:
 402                                 print "Number of failed tests: %s" % str(self.fails)
 403
 404                         # write summary to logfile
 405                         self.logfile.write("Summary\n")
 406                         self.logfile.write("Target: ".ljust(15) + "%s\n" % self.target)
 407                         self.logfile.write("Tests: ".ljust(15) + "%i\n" % self.n_tests)
 408                         self.logfile.write("Failed tests: ".ljust(15) + "%i\n" % self.fails)
 409                 except:
 410                         print "Exception occured"
 411                         print sys.exc_info()
 412                         self.fails = 1
 413
 414                 # drop logs from all executions to a logfile
 415                 for buf in self.log_buffers:
 416                         self.logfile.write(buf.replace("\r",""))
 417
 418                 log_buffers = []
 419
 420                 return self.fails