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