script/autobuild.py

   1 #!/usr/bin/env python
   2 # run tests on all Samba subprojects and push to a git tree on success
   3 # Copyright Andrew Tridgell 2010
   4 # released under GNU GPL v3 or later
   5
   6 from subprocess import call, check_call,Popen, PIPE
   7 import os, tarfile, sys, time
   8 from optparse import OptionParser
   9 import smtplib
  10 from email.mime.text import MIMEText
  11 from distutils.sysconfig import get_python_lib
  12
  13 samba_master = os.getenv('SAMBA_MASTER', 'git://git.samba.org/samba.git')
  14 samba_master_ssh = os.getenv('SAMBA_MASTER_SSH', 'git+ssh://git.samba.org/data/git/samba.git')
  15
  16 cleanup_list = []
  17
  18 builddirs = {
  19     "samba3"  : "source3",
  20     "samba4"  : ".",
  21     "samba4-libs"  : ".",
  22     "ldb"     : "lib/ldb",
  23     "tdb"     : "lib/tdb",
  24     "ntdb"    : "lib/ntdb",
  25     "talloc"  : "lib/talloc",
  26     "replace" : "lib/replace",
  27     "tevent"  : "lib/tevent",
  28     "pidl"    : "pidl",
  29     "pass"    : ".",
  30     "fail"    : ".",
  31     "retry"   : "."
  32     }
  33
  34 defaulttasks = [ "samba3", "samba4", "samba4-libs", "ldb", "tdb", "ntdb", "talloc", "replace", "tevent", "pidl" ]
  35
  36 tasks = {
  37     "samba3" : [ ("autogen", "./autogen.sh", "text/plain"),
  38                  ("configure", "./configure.developer ${PREFIX}", "text/plain"),
  39                  ("make basics", "make basics", "text/plain"),
  40                  # we split 'make -j 4', 'make bin/smbtorture4' and 'make -j 4 everything'
  41                  # because it makes it much easier to find errors.
  42                  ("make", "make -j 4", "text/plain"), # don't use too many processes
  43                  ("make bin/smbtorture4", "make bin/smbtorture4", "text/plain"),
  44                  ("make everything", "make -j 4 everything", "text/plain"),
  45                  ("install", "make install", "text/plain"),
  46                  ("test", "TDB_NO_FSYNC=1 make test FAIL_IMMEDIATELY=1", "text/plain"),
  47                  ("check-clean-tree", "../script/clean-source-tree.sh", "text/plain"),
  48                  ("clean", "make clean", "text/plain") ],
  49
  50     # We have 'test' before 'install' because, 'test' should work without 'install'
  51     "samba4" : [ ("configure", "./configure.developer ${PREFIX} --with-selftest-prefix=./bin/ab", "text/plain"),
  52                  ("make", "make -j", "text/plain"),
  53                  ("test", "TDB_NO_FSYNC=1 make test FAIL_IMMEDIATELY=1", "text/plain"),
  54                  ("install", "make install", "text/plain"),
  55                  ("check-clean-tree", "script/clean-source-tree.sh", "text/plain"),
  56                  ("clean", "make clean", "text/plain") ],
  57
  58     "samba4-libs" : [
  59                       ("random-sleep", "script/random-sleep.sh 60 600", "text/plain"),
  60                       ("talloc-configure", "cd lib/talloc && PYTHONPATH=${PYTHON_PREFIX}/site-packages:$PYTHONPATH PKG_CONFIG_PATH=$PKG_CONFIG_PATH:${PREFIX_DIR}/lib/pkgconfig ./configure --bundled-libraries=NONE --abi-check --enable-debug -C ${PREFIX}", "text/plain"),
  61                       ("talloc-make", "cd lib/talloc && make", "text/plain"),
  62                       ("talloc-install", "cd lib/talloc && make install", "text/plain"),
  63
  64                       ("tdb-configure", "cd lib/tdb && PYTHONPATH=${PYTHON_PREFIX}/site-packages:$PYTHONPATH PKG_CONFIG_PATH=$PKG_CONFIG_PATH:${PREFIX_DIR}/lib/pkgconfig ./configure --bundled-libraries=NONE --abi-check --enable-debug -C ${PREFIX}", "text/plain"),
  65                       ("tdb-make", "cd lib/tdb && make", "text/plain"),
  66                       ("tdb-install", "cd lib/tdb && make install", "text/plain"),
  67
  68                       ("tevent-configure", "cd lib/tevent && PYTHONPATH=${PYTHON_PREFIX}/site-packages:$PYTHONPATH PKG_CONFIG_PATH=$PKG_CONFIG_PATH:${PREFIX_DIR}/lib/pkgconfig ./configure --bundled-libraries=NONE --abi-check --enable-debug -C ${PREFIX}", "text/plain"),
  69                       ("tevent-make", "cd lib/tevent && make", "text/plain"),
  70                       ("tevent-install", "cd lib/tevent && make install", "text/plain"),
  71
  72                       ("ldb-configure", "cd lib/ldb && PYTHONPATH=${PYTHON_PREFIX}/site-packages:$PYTHONPATH PKG_CONFIG_PATH=$PKG_CONFIG_PATH:${PREFIX_DIR}/lib/pkgconfig ./configure --bundled-libraries=NONE --abi-check --enable-debug -C ${PREFIX}", "text/plain"),
  73                       ("ldb-make", "cd lib/ldb && make", "text/plain"),
  74                       ("ldb-install", "cd lib/ldb && make install", "text/plain"),
  75
  76                       ("configure", "PYTHONPATH=${PYTHON_PREFIX}/site-packages:$PYTHONPATH PKG_CONFIG_PATH=$PKG_CONFIG_PATH:${PREFIX_DIR}/lib/pkgconfig ./configure --bundled-libraries=!talloc,!tdb,!pytdb,!ldb,!pyldb,!tevent,!pytevent --abi-check --enable-debug -C ${PREFIX}", "text/plain"),
  77                       ("make", "make", "text/plain"),
  78                       ("install", "make install", "text/plain")],
  79
  80     "ldb" : [
  81               ("random-sleep", "script/random-sleep.sh 60 600", "text/plain"),
  82               ("configure", "./configure --enable-developer -C ${PREFIX}", "text/plain"),
  83               ("make", "make", "text/plain"),
  84               ("install", "make install", "text/plain"),
  85               ("test", "TDB_NO_FSYNC=1 make test", "text/plain"),
  86               ("check-clean-tree", "../../script/clean-source-tree.sh", "text/plain"),
  87               ("distcheck", "make distcheck", "text/plain"),
  88               ("clean", "make clean", "text/plain") ],
  89
  90     # We don't use TDB_NO_FSYNC=1 here, because we want to test the transaction code
  91     "tdb" : [
  92               ("random-sleep", "script/random-sleep.sh 60 600", "text/plain"),
  93               ("configure", "./configure --enable-developer -C ${PREFIX}", "text/plain"),
  94               ("make", "make", "text/plain"),
  95               ("install", "make install", "text/plain"),
  96               ("test", "make test", "text/plain"),
  97               ("check-clean-tree", "../../script/clean-source-tree.sh", "text/plain"),
  98               ("distcheck", "make distcheck", "text/plain"),
  99               ("clean", "make clean", "text/plain") ],
 100
 101     "ntdb" : [
 102                ("random-sleep", "script/random-sleep.sh 60 600", "text/plain"),
 103                ("configure", "./configure --enable-developer -C ${PREFIX}", "text/plain"),
 104                ("make", "make", "text/plain"),
 105                ("install", "make install", "text/plain"),
 106                ("test", "make test", "text/plain"),
 107                ("check-clean-tree", "../../script/clean-source-tree.sh", "text/plain"),
 108                ("distcheck", "make distcheck", "text/plain"),
 109                ("clean", "make clean", "text/plain") ],
 110
 111     "talloc" : [
 112                  ("random-sleep", "script/random-sleep.sh 60 600", "text/plain"),
 113                  ("configure", "./configure --enable-developer -C ${PREFIX}", "text/plain"),
 114                  ("make", "make", "text/plain"),
 115                  ("install", "make install", "text/plain"),
 116                  ("test", "make test", "text/plain"),
 117                  ("check-clean-tree", "../../script/clean-source-tree.sh", "text/plain"),
 118                  ("distcheck", "make distcheck", "text/plain"),
 119                  ("clean", "make clean", "text/plain") ],
 120
 121     "replace" : [
 122                   ("random-sleep", "script/random-sleep.sh 60 600", "text/plain"),
 123                   ("configure", "./configure --enable-developer -C ${PREFIX}", "text/plain"),
 124                   ("make", "make", "text/plain"),
 125                   ("install", "make install", "text/plain"),
 126                   ("test", "make test", "text/plain"),
 127                   ("check-clean-tree", "../../script/clean-source-tree.sh", "text/plain"),
 128                   ("distcheck", "make distcheck", "text/plain"),
 129                   ("clean", "make clean", "text/plain") ],
 130
 131     "tevent" : [
 132                  ("random-sleep", "script/random-sleep.sh 60 600", "text/plain"),
 133                  ("configure", "./configure --enable-developer -C ${PREFIX}", "text/plain"),
 134                  ("make", "make", "text/plain"),
 135                  ("install", "make install", "text/plain"),
 136                  ("test", "make test", "text/plain"),
 137                  ("check-clean-tree", "../../script/clean-source-tree.sh", "text/plain"),
 138                  ("distcheck", "make distcheck", "text/plain"),
 139                  ("clean", "make clean", "text/plain") ],
 140
 141     "pidl" : [
 142                ("random-sleep", "script/random-sleep.sh 60 600", "text/plain"),
 143                ("configure", "perl Makefile.PL PREFIX=${PREFIX_DIR}", "text/plain"),
 144                ("touch", "touch *.yp", "text/plain"),
 145                ("make", "make", "text/plain"),
 146                ("test", "make test", "text/plain"),
 147                ("install", "make install", "text/plain"),
 148                ("check-clean-tree", "../script/clean-source-tree.sh", "text/plain"),
 149                ("clean", "make clean", "text/plain") ],
 150
 151     # these are useful for debugging autobuild
 152     'pass' : [ ("pass", 'echo passing && /bin/true', "text/plain") ],
 153     'fail' : [ ("fail", 'echo failing && /bin/false', "text/plain") ]
 154 }
 155
 156 retry_task = [ ( "retry",
 157                  '''set -e
 158                 git remote add -t master master %s
 159                 git fetch master
 160                 while :; do
 161                   sleep 60
 162                   git describe master/master > old_master.desc
 163                   git fetch master
 164                   git describe master/master > master.desc
 165                   diff old_master.desc master.desc
 166                 done
 167                ''' % samba_master, "test/plain" ) ]
 168
 169 def run_cmd(cmd, dir=".", show=None, output=False, checkfail=True):
 170     if show is None:
 171         show = options.verbose
 172     if show:
 173         print("Running: '%s' in '%s'" % (cmd, dir))
 174     if output:
 175         return Popen([cmd], shell=True, stdout=PIPE, cwd=dir).communicate()[0]
 176     elif checkfail:
 177         return check_call(cmd, shell=True, cwd=dir)
 178     else:
 179         return call(cmd, shell=True, cwd=dir)
 180
 181
 182 class builder(object):
 183     '''handle build of one directory'''
 184
 185     def __init__(self, name, sequence):
 186         self.name = name
 187         self.dir = builddirs[name]
 188
 189         self.tag = self.name.replace('/', '_')
 190         self.sequence = sequence
 191         self.next = 0
 192         self.stdout_path = "%s/%s.stdout" % (gitroot, self.tag)
 193         self.stderr_path = "%s/%s.stderr" % (gitroot, self.tag)
 194         if options.verbose:
 195             print("stdout for %s in %s" % (self.name, self.stdout_path))
 196             print("stderr for %s in %s" % (self.name, self.stderr_path))
 197         run_cmd("rm -f %s %s" % (self.stdout_path, self.stderr_path))
 198         self.stdout = open(self.stdout_path, 'w')
 199         self.stderr = open(self.stderr_path, 'w')
 200         self.stdin  = open("/dev/null", 'r')
 201         self.sdir = "%s/%s" % (testbase, self.tag)
 202         self.prefix = "%s/prefix/%s" % (testbase, self.tag)
 203         run_cmd("rm -rf %s" % self.sdir)
 204         cleanup_list.append(self.sdir)
 205         cleanup_list.append(self.prefix)
 206         os.makedirs(self.sdir)
 207         run_cmd("rm -rf %s" % self.sdir)
 208         run_cmd("git clone --shared %s %s" % (test_master, self.sdir), dir=test_master, show=True)
 209         self.start_next()
 210
 211     def start_next(self):
 212         if self.next == len(self.sequence):
 213             print '%s: Completed OK' % self.name
 214             self.done = True
 215             return
 216         (self.stage, self.cmd, self.output_mime_type) = self.sequence[self.next]
 217         self.cmd = self.cmd.replace("${PYTHON_PREFIX}", get_python_lib(standard_lib=1, prefix=self.prefix))
 218         self.cmd = self.cmd.replace("${PREFIX}", "--prefix=%s" % self.prefix)
 219         self.cmd = self.cmd.replace("${PREFIX_DIR}", "%s" % self.prefix)
 220 #        if self.output_mime_type == "text/x-subunit":
 221 #            self.cmd += " | %s --immediate" % (os.path.join(os.path.dirname(__file__), "selftest/format-subunit"))
 222         print '%s: [%s] Running %s' % (self.name, self.stage, self.cmd)
 223         cwd = os.getcwd()
 224         os.chdir("%s/%s" % (self.sdir, self.dir))
 225         self.proc = Popen(self.cmd, shell=True,
 226                           stdout=self.stdout, stderr=self.stderr, stdin=self.stdin)
 227         os.chdir(cwd)
 228         self.next += 1
 229
 230
 231 class buildlist(object):
 232     '''handle build of multiple directories'''
 233
 234     def __init__(self, tasklist, tasknames):
 235         global tasks
 236         self.tlist = []
 237         self.tail_proc = None
 238         self.retry = None
 239         if tasknames == []:
 240             tasknames = defaulttasks
 241         for n in tasknames:
 242             b = builder(n, tasks[n])
 243             self.tlist.append(b)
 244         if options.retry:
 245             self.retry = builder('retry', retry_task)
 246             self.need_retry = False
 247
 248     def kill_kids(self):
 249         if self.tail_proc is not None:
 250             self.tail_proc.terminate()
 251             self.tail_proc.wait()
 252             self.tail_proc = None
 253         if self.retry is not None:
 254             self.retry.proc.terminate()
 255             self.retry.proc.wait()
 256             self.retry = None
 257         for b in self.tlist:
 258             if b.proc is not None:
 259                 run_cmd("killbysubdir %s > /dev/null 2>&1" % b.sdir, checkfail=False)
 260                 b.proc.terminate()
 261                 b.proc.wait()
 262                 b.proc = None
 263
 264     def wait_one(self):
 265         while True:
 266             none_running = True
 267             for b in self.tlist:
 268                 if b.proc is None:
 269                     continue
 270                 none_running = False
 271                 b.status = b.proc.poll()
 272                 if b.status is None:
 273                     continue
 274                 b.proc = None
 275                 return b
 276             if options.retry:
 277                 ret = self.retry.proc.poll()
 278                 if ret is not None:
 279                     self.need_retry = True
 280                     self.retry = None
 281                     return None
 282             if none_running:
 283                 return None
 284             time.sleep(0.1)
 285
 286     def run(self):
 287         while True:
 288             b = self.wait_one()
 289             if options.retry and self.need_retry:
 290                 self.kill_kids()
 291                 print("retry needed")
 292                 return (0, None, None, None, "retry")
 293             if b is None:
 294                 break
 295             if os.WIFSIGNALED(b.status) or os.WEXITSTATUS(b.status) != 0:
 296                 self.kill_kids()
 297                 return (b.status, b.name, b.stage, b.tag, "%s: [%s] failed '%s' with status %d" % (b.name, b.stage, b.cmd, b.status))
 298             b.start_next()
 299         self.kill_kids()
 300         return (0, None, None, None, "All OK")
 301
 302     def tarlogs(self, fname):
 303         tar = tarfile.open(fname, "w:gz")
 304         for b in self.tlist:
 305             tar.add(b.stdout_path, arcname="%s.stdout" % b.tag)
 306             tar.add(b.stderr_path, arcname="%s.stderr" % b.tag)
 307         if os.path.exists("autobuild.log"):
 308             tar.add("autobuild.log")
 309         tar.close()
 310
 311     def remove_logs(self):
 312         for b in self.tlist:
 313             os.unlink(b.stdout_path)
 314             os.unlink(b.stderr_path)
 315
 316     def start_tail(self):
 317         cwd = os.getcwd()
 318         cmd = "tail -f *.stdout *.stderr"
 319         os.chdir(gitroot)
 320         self.tail_proc = Popen(cmd, shell=True)
 321         os.chdir(cwd)
 322
 323
 324 def cleanup():
 325     if options.nocleanup:
 326         return
 327     print("Cleaning up ....")
 328     for d in cleanup_list:
 329         run_cmd("rm -rf %s" % d)
 330
 331
 332 def find_git_root():
 333     '''get to the top of the git repo'''
 334     p=os.getcwd()
 335     while p != '/':
 336         if os.path.isdir(os.path.join(p, ".git")):
 337             return p
 338         p = os.path.abspath(os.path.join(p, '..'))
 339     return None
 340
 341
 342 def daemonize(logfile):
 343     pid = os.fork()
 344     if pid == 0: # Parent
 345         os.setsid()
 346         pid = os.fork()
 347         if pid != 0: # Actual daemon
 348             os._exit(0)
 349     else: # Grandparent
 350         os._exit(0)
 351
 352     import resource      # Resource usage information.
 353     maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
 354     if maxfd == resource.RLIM_INFINITY:
 355         maxfd = 1024 # Rough guess at maximum number of open file descriptors.
 356     for fd in range(0, maxfd):
 357         try:
 358             os.close(fd)
 359         except OSError:
 360             pass
 361     os.open(logfile, os.O_RDWR | os.O_CREAT)
 362     os.dup2(0, 1)
 363     os.dup2(0, 2)
 364
 365 def write_pidfile(fname):
 366     '''write a pid file, cleanup on exit'''
 367     f = open(fname, mode='w')
 368     f.write("%u\n" % os.getpid())
 369     f.close()
 370
 371
 372 def rebase_tree(url):
 373     print("Rebasing on %s" % url)
 374     run_cmd("git describe HEAD", show=True, dir=test_master)
 375     run_cmd("git remote add -t master master %s" % url, show=True, dir=test_master)
 376     run_cmd("git fetch master", show=True, dir=test_master)
 377     if options.fix_whitespace:
 378         run_cmd("git rebase --whitespace=fix master/master", show=True, dir=test_master)
 379     else:
 380         run_cmd("git rebase master/master", show=True, dir=test_master)
 381     diff = run_cmd("git --no-pager diff HEAD master/master", dir=test_master, output=True)
 382     if diff == '':
 383         print("No differences between HEAD and master/master - exiting")
 384         sys.exit(0)
 385     run_cmd("git describe master/master", show=True, dir=test_master)
 386     run_cmd("git describe HEAD", show=True, dir=test_master)
 387     run_cmd("git --no-pager diff --stat HEAD master/master", show=True, dir=test_master)
 388
 389 def push_to(url):
 390     print("Pushing to %s" % url)
 391     if options.mark:
 392         run_cmd("git config --replace-all core.editor script/commit_mark.sh", dir=test_master)
 393         run_cmd("git commit --amend -c HEAD", dir=test_master)
 394         # the notes method doesn't work yet, as metze hasn't allowed refs/notes/* in master
 395         # run_cmd("EDITOR=script/commit_mark.sh git notes edit HEAD", dir=test_master)
 396     run_cmd("git remote add -t master pushto %s" % url, show=True, dir=test_master)
 397     run_cmd("git push pushto +HEAD:master", show=True, dir=test_master)
 398
 399 def_testbase = os.getenv("AUTOBUILD_TESTBASE", "/memdisk/%s" % os.getenv('USER'))
 400
 401 parser = OptionParser()
 402 parser.add_option("", "--tail", help="show output while running", default=False, action="store_true")
 403 parser.add_option("", "--keeplogs", help="keep logs", default=False, action="store_true")
 404 parser.add_option("", "--nocleanup", help="don't remove test tree", default=False, action="store_true")
 405 parser.add_option("", "--testbase", help="base directory to run tests in (default %s)" % def_testbase,
 406                   default=def_testbase)
 407 parser.add_option("", "--passcmd", help="command to run on success", default=None)
 408 parser.add_option("", "--verbose", help="show all commands as they are run",
 409                   default=False, action="store_true")
 410 parser.add_option("", "--rebase", help="rebase on the given tree before testing",
 411                   default=None, type='str')
 412 parser.add_option("", "--rebase-master", help="rebase on %s before testing" % samba_master,
 413                   default=False, action='store_true')
 414 parser.add_option("", "--pushto", help="push to a git url on success",
 415                   default=None, type='str')
 416 parser.add_option("", "--push-master", help="push to %s on success" % samba_master_ssh,
 417                   default=False, action='store_true')
 418 parser.add_option("", "--mark", help="add a Tested-By signoff before pushing",
 419                   default=False, action="store_true")
 420 parser.add_option("", "--fix-whitespace", help="fix whitespace on rebase",
 421                   default=False, action="store_true")
 422 parser.add_option("", "--retry", help="automatically retry if master changes",
 423                   default=False, action="store_true")
 424 parser.add_option("", "--email", help="send email to the given address on failure",
 425                   type='str', default=None)
 426 parser.add_option("", "--always-email", help="always send email, even on success",
 427                   action="store_true")
 428 parser.add_option("", "--daemon", help="daemonize after initial setup",
 429                   action="store_true")
 430
 431
 432 def email_failure(status, failed_task, failed_stage, failed_tag, errstr):
 433     '''send an email to options.email about the failure'''
 434     user = os.getenv("USER")
 435     text = '''
 436 Dear Developer,
 437
 438 Your autobuild failed when trying to test %s with the following error:
 439    %s
 440
 441 the autobuild has been abandoned. Please fix the error and resubmit.
 442
 443 A summary of the autobuild process is here:
 444
 445   http://git.samba.org/%s/samba-autobuild/autobuild.log
 446 ''' % (failed_task, errstr, user)
 447
 448     if failed_task != 'rebase':
 449         text += '''
 450 You can see logs of the failed task here:
 451
 452   http://git.samba.org/%s/samba-autobuild/%s.stdout
 453   http://git.samba.org/%s/samba-autobuild/%s.stderr
 454
 455 or you can get full logs of all tasks in this job here:
 456
 457   http://git.samba.org/%s/samba-autobuild/logs.tar.gz
 458
 459 The top commit for the tree that was built was:
 460
 461 %s
 462
 463 ''' % (user, failed_tag, user, failed_tag, user, top_commit_msg)
 464     msg = MIMEText(text)
 465     msg['Subject'] = 'autobuild failure for task %s during %s' % (failed_task, failed_stage)
 466     msg['From'] = 'autobuild@samba.org'
 467     msg['To'] = options.email
 468
 469     s = smtplib.SMTP()
 470     s.connect()
 471     s.sendmail(msg['From'], [msg['To']], msg.as_string())
 472     s.quit()
 473
 474 def email_success():
 475     '''send an email to options.email about a successful build'''
 476     user = os.getenv("USER")
 477     text = '''
 478 Dear Developer,
 479
 480 Your autobuild has succeeded.
 481
 482 '''
 483
 484     if options.keeplogs:
 485         text += '''
 486
 487 you can get full logs of all tasks in this job here:
 488
 489   http://git.samba.org/%s/samba-autobuild/logs.tar.gz
 490
 491 ''' % user
 492
 493     text += '''
 494 The top commit for the tree that was built was:
 495
 496 %s
 497 ''' % top_commit_msg
 498
 499     msg = MIMEText(text)
 500     msg['Subject'] = 'autobuild success'
 501     msg['From'] = 'autobuild@samba.org'
 502     msg['To'] = options.email
 503
 504     s = smtplib.SMTP()
 505     s.connect()
 506     s.sendmail(msg['From'], [msg['To']], msg.as_string())
 507     s.quit()
 508
 509
 510 (options, args) = parser.parse_args()
 511
 512 if options.retry:
 513     if not options.rebase_master and options.rebase is None:
 514         raise Exception('You can only use --retry if you also rebase')
 515
 516 testbase = "%s/b%u" % (options.testbase, os.getpid())
 517 test_master = "%s/master" % testbase
 518
 519 gitroot = find_git_root()
 520 if gitroot is None:
 521     raise Exception("Failed to find git root")
 522
 523 # get the top commit message, for emails
 524 top_commit_msg = run_cmd("git log -1", dir=gitroot, output=True)
 525
 526 try:
 527     os.makedirs(testbase)
 528 except Exception, reason:
 529     raise Exception("Unable to create %s : %s" % (testbase, reason))
 530 cleanup_list.append(testbase)
 531
 532 if options.daemon:
 533     logfile = os.path.join(testbase, "log")
 534     print "Forking into the background, writing progress to %s" % logfile
 535     daemonize(logfile)
 536
 537 write_pidfile(gitroot + "/autobuild.pid")
 538
 539 while True:
 540     try:
 541         run_cmd("rm -rf %s" % test_master)
 542         cleanup_list.append(test_master)
 543         run_cmd("git clone --shared %s %s" % (gitroot, test_master), show=True, dir=gitroot)
 544     except Exception:
 545         cleanup()
 546         raise
 547
 548     try:
 549         try:
 550             if options.rebase is not None:
 551                 rebase_tree(options.rebase)
 552             elif options.rebase_master:
 553                 rebase_tree(samba_master)
 554         except Exception:
 555             cleanup_list.append(gitroot + "/autobuild.pid")
 556             cleanup()
 557             email_failure(-1, 'rebase', 'rebase', 'rebase', 'rebase on master failed')
 558             sys.exit(1)
 559         blist = buildlist(tasks, args)
 560         if options.tail:
 561             blist.start_tail()
 562         (status, failed_task, failed_stage, failed_tag, errstr) = blist.run()
 563         if status != 0 or errstr != "retry":
 564             break
 565         cleanup()
 566     except Exception:
 567         cleanup()
 568         raise
 569
 570 cleanup_list.append(gitroot + "/autobuild.pid")
 571
 572 blist.kill_kids()
 573 if options.tail:
 574     print("waiting for tail to flush")
 575     time.sleep(1)
 576
 577 if status == 0:
 578     print errstr
 579     if options.passcmd is not None:
 580         print("Running passcmd: %s" % options.passcmd)
 581         run_cmd(options.passcmd, dir=test_master)
 582     if options.pushto is not None:
 583         push_to(options.pushto)
 584     elif options.push_master:
 585         push_to(samba_master_ssh)
 586     if options.keeplogs:
 587         blist.tarlogs("logs.tar.gz")
 588         print("Logs in logs.tar.gz")
 589     if options.always_email:
 590         email_success()
 591     blist.remove_logs()
 592     cleanup()
 593     print(errstr)
 594     sys.exit(0)
 595
 596 # something failed, gather a tar of the logs
 597 blist.tarlogs("logs.tar.gz")
 598
 599 if options.email is not None:
 600     email_failure(status, failed_task, failed_stage, failed_tag, errstr)
 601
 602 cleanup()
 603 print(errstr)
 604 print("Logs in logs.tar.gz")
 605 sys.exit(status)