bitbake-worker 14 KB

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  1. #!/usr/bin/env python
  2. import os
  3. import sys
  4. import warnings
  5. sys.path.insert(0, os.path.join(os.path.dirname(os.path.dirname(sys.argv[0])), 'lib'))
  6. from bb import fetch2
  7. import logging
  8. import bb
  9. import select
  10. import errno
  11. import signal
  12. # Users shouldn't be running this code directly
  13. if len(sys.argv) != 2 or not sys.argv[1].startswith("decafbad"):
  14. print("bitbake-worker is meant for internal execution by bitbake itself, please don't use it standalone.")
  15. sys.exit(1)
  16. profiling = False
  17. if sys.argv[1] == "decafbadbad":
  18. profiling = True
  19. try:
  20. import cProfile as profile
  21. except:
  22. import profile
  23. logger = logging.getLogger("BitBake")
  24. try:
  25. import cPickle as pickle
  26. except ImportError:
  27. import pickle
  28. bb.msg.note(1, bb.msg.domain.Cache, "Importing cPickle failed. Falling back to a very slow implementation.")
  29. worker_pipe = sys.stdout.fileno()
  30. bb.utils.nonblockingfd(worker_pipe)
  31. handler = bb.event.LogHandler()
  32. logger.addHandler(handler)
  33. if 0:
  34. # Code to write out a log file of all events passing through the worker
  35. logfilename = "/tmp/workerlogfile"
  36. format_str = "%(levelname)s: %(message)s"
  37. conlogformat = bb.msg.BBLogFormatter(format_str)
  38. consolelog = logging.FileHandler(logfilename)
  39. bb.msg.addDefaultlogFilter(consolelog)
  40. consolelog.setFormatter(conlogformat)
  41. logger.addHandler(consolelog)
  42. worker_queue = ""
  43. def worker_fire(event, d):
  44. data = "<event>" + pickle.dumps(event) + "</event>"
  45. worker_fire_prepickled(data)
  46. def worker_fire_prepickled(event):
  47. global worker_queue
  48. worker_queue = worker_queue + event
  49. worker_flush()
  50. def worker_flush():
  51. global worker_queue, worker_pipe
  52. if not worker_queue:
  53. return
  54. try:
  55. written = os.write(worker_pipe, worker_queue)
  56. worker_queue = worker_queue[written:]
  57. except (IOError, OSError) as e:
  58. if e.errno != errno.EAGAIN:
  59. raise
  60. def worker_child_fire(event, d):
  61. global worker_pipe
  62. data = "<event>" + pickle.dumps(event) + "</event>"
  63. worker_pipe.write(data)
  64. bb.event.worker_fire = worker_fire
  65. lf = None
  66. #lf = open("/tmp/workercommandlog", "w+")
  67. def workerlog_write(msg):
  68. if lf:
  69. lf.write(msg)
  70. lf.flush()
  71. def sigterm_handler(signum, frame):
  72. signal.signal(signal.SIGTERM, signal.SIG_DFL)
  73. os.killpg(0, signal.SIGTERM)
  74. sys.exit()
  75. def fork_off_task(cfg, data, workerdata, fn, task, taskname, appends, taskdepdata, quieterrors=False):
  76. # We need to setup the environment BEFORE the fork, since
  77. # a fork() or exec*() activates PSEUDO...
  78. envbackup = {}
  79. fakeenv = {}
  80. umask = None
  81. taskdep = workerdata["taskdeps"][fn]
  82. if 'umask' in taskdep and taskname in taskdep['umask']:
  83. # umask might come in as a number or text string..
  84. try:
  85. umask = int(taskdep['umask'][taskname],8)
  86. except TypeError:
  87. umask = taskdep['umask'][taskname]
  88. # We can't use the fakeroot environment in a dry run as it possibly hasn't been built
  89. if 'fakeroot' in taskdep and taskname in taskdep['fakeroot'] and not cfg.dry_run:
  90. envvars = (workerdata["fakerootenv"][fn] or "").split()
  91. for key, value in (var.split('=') for var in envvars):
  92. envbackup[key] = os.environ.get(key)
  93. os.environ[key] = value
  94. fakeenv[key] = value
  95. fakedirs = (workerdata["fakerootdirs"][fn] or "").split()
  96. for p in fakedirs:
  97. bb.utils.mkdirhier(p)
  98. logger.debug(2, 'Running %s:%s under fakeroot, fakedirs: %s' %
  99. (fn, taskname, ', '.join(fakedirs)))
  100. else:
  101. envvars = (workerdata["fakerootnoenv"][fn] or "").split()
  102. for key, value in (var.split('=') for var in envvars):
  103. envbackup[key] = os.environ.get(key)
  104. os.environ[key] = value
  105. fakeenv[key] = value
  106. sys.stdout.flush()
  107. sys.stderr.flush()
  108. try:
  109. pipein, pipeout = os.pipe()
  110. pipein = os.fdopen(pipein, 'rb', 4096)
  111. pipeout = os.fdopen(pipeout, 'wb', 0)
  112. pid = os.fork()
  113. except OSError as e:
  114. bb.msg.fatal("RunQueue", "fork failed: %d (%s)" % (e.errno, e.strerror))
  115. if pid == 0:
  116. def child():
  117. global worker_pipe
  118. pipein.close()
  119. signal.signal(signal.SIGTERM, sigterm_handler)
  120. # Let SIGHUP exit as SIGTERM
  121. signal.signal(signal.SIGHUP, sigterm_handler)
  122. # Save out the PID so that the event can include it the
  123. # events
  124. bb.event.worker_pid = os.getpid()
  125. bb.event.worker_fire = worker_child_fire
  126. worker_pipe = pipeout
  127. # Make the child the process group leader
  128. os.setpgid(0, 0)
  129. # No stdin
  130. newsi = os.open(os.devnull, os.O_RDWR)
  131. os.dup2(newsi, sys.stdin.fileno())
  132. if umask:
  133. os.umask(umask)
  134. data.setVar("BB_WORKERCONTEXT", "1")
  135. data.setVar("BB_TASKDEPDATA", taskdepdata)
  136. data.setVar("BUILDNAME", workerdata["buildname"])
  137. data.setVar("DATE", workerdata["date"])
  138. data.setVar("TIME", workerdata["time"])
  139. bb.parse.siggen.set_taskdata(workerdata["sigdata"])
  140. ret = 0
  141. try:
  142. the_data = bb.cache.Cache.loadDataFull(fn, appends, data)
  143. the_data.setVar('BB_TASKHASH', workerdata["runq_hash"][task])
  144. # exported_vars() returns a generator which *cannot* be passed to os.environ.update()
  145. # successfully. We also need to unset anything from the environment which shouldn't be there
  146. exports = bb.data.exported_vars(the_data)
  147. bb.utils.empty_environment()
  148. for e, v in exports:
  149. os.environ[e] = v
  150. for e in fakeenv:
  151. os.environ[e] = fakeenv[e]
  152. the_data.setVar(e, fakeenv[e])
  153. the_data.setVarFlag(e, 'export', "1")
  154. if quieterrors:
  155. the_data.setVarFlag(taskname, "quieterrors", "1")
  156. except Exception as exc:
  157. if not quieterrors:
  158. logger.critical(str(exc))
  159. os._exit(1)
  160. try:
  161. if cfg.dry_run:
  162. return 0
  163. return bb.build.exec_task(fn, taskname, the_data, cfg.profile)
  164. except:
  165. os._exit(1)
  166. if not profiling:
  167. os._exit(child())
  168. else:
  169. profname = "profile-%s.log" % (fn.replace("/", "-") + "-" + taskname)
  170. prof = profile.Profile()
  171. try:
  172. ret = profile.Profile.runcall(prof, child)
  173. finally:
  174. prof.dump_stats(profname)
  175. bb.utils.process_profilelog(profname)
  176. os._exit(ret)
  177. else:
  178. for key, value in envbackup.iteritems():
  179. if value is None:
  180. del os.environ[key]
  181. else:
  182. os.environ[key] = value
  183. return pid, pipein, pipeout
  184. class runQueueWorkerPipe():
  185. """
  186. Abstraction for a pipe between a worker thread and the worker server
  187. """
  188. def __init__(self, pipein, pipeout):
  189. self.input = pipein
  190. if pipeout:
  191. pipeout.close()
  192. bb.utils.nonblockingfd(self.input)
  193. self.queue = ""
  194. def read(self):
  195. start = len(self.queue)
  196. try:
  197. self.queue = self.queue + self.input.read(102400)
  198. except (OSError, IOError) as e:
  199. if e.errno != errno.EAGAIN:
  200. raise
  201. end = len(self.queue)
  202. index = self.queue.find("</event>")
  203. while index != -1:
  204. worker_fire_prepickled(self.queue[:index+8])
  205. self.queue = self.queue[index+8:]
  206. index = self.queue.find("</event>")
  207. return (end > start)
  208. def close(self):
  209. while self.read():
  210. continue
  211. if len(self.queue) > 0:
  212. print("Warning, worker child left partial message: %s" % self.queue)
  213. self.input.close()
  214. normalexit = False
  215. class BitbakeWorker(object):
  216. def __init__(self, din):
  217. self.input = din
  218. bb.utils.nonblockingfd(self.input)
  219. self.queue = ""
  220. self.cookercfg = None
  221. self.databuilder = None
  222. self.data = None
  223. self.build_pids = {}
  224. self.build_pipes = {}
  225. signal.signal(signal.SIGTERM, self.sigterm_exception)
  226. # Let SIGHUP exit as SIGTERM
  227. signal.signal(signal.SIGHUP, self.sigterm_exception)
  228. def sigterm_exception(self, signum, stackframe):
  229. if signum == signal.SIGTERM:
  230. bb.warn("Worker recieved SIGTERM, shutting down...")
  231. elif signum == signal.SIGHUP:
  232. bb.warn("Worker recieved SIGHUP, shutting down...")
  233. self.handle_finishnow(None)
  234. signal.signal(signal.SIGTERM, signal.SIG_DFL)
  235. os.kill(os.getpid(), signal.SIGTERM)
  236. def serve(self):
  237. while True:
  238. (ready, _, _) = select.select([self.input] + [i.input for i in self.build_pipes.values()], [] , [], 1)
  239. if self.input in ready or len(self.queue):
  240. start = len(self.queue)
  241. try:
  242. self.queue = self.queue + self.input.read()
  243. except (OSError, IOError):
  244. pass
  245. end = len(self.queue)
  246. self.handle_item("cookerconfig", self.handle_cookercfg)
  247. self.handle_item("workerdata", self.handle_workerdata)
  248. self.handle_item("runtask", self.handle_runtask)
  249. self.handle_item("finishnow", self.handle_finishnow)
  250. self.handle_item("ping", self.handle_ping)
  251. self.handle_item("quit", self.handle_quit)
  252. for pipe in self.build_pipes:
  253. self.build_pipes[pipe].read()
  254. if len(self.build_pids):
  255. self.process_waitpid()
  256. worker_flush()
  257. def handle_item(self, item, func):
  258. if self.queue.startswith("<" + item + ">"):
  259. index = self.queue.find("</" + item + ">")
  260. while index != -1:
  261. func(self.queue[(len(item) + 2):index])
  262. self.queue = self.queue[(index + len(item) + 3):]
  263. index = self.queue.find("</" + item + ">")
  264. def handle_cookercfg(self, data):
  265. self.cookercfg = pickle.loads(data)
  266. self.databuilder = bb.cookerdata.CookerDataBuilder(self.cookercfg, worker=True)
  267. self.databuilder.parseBaseConfiguration()
  268. self.data = self.databuilder.data
  269. def handle_workerdata(self, data):
  270. self.workerdata = pickle.loads(data)
  271. bb.msg.loggerDefaultDebugLevel = self.workerdata["logdefaultdebug"]
  272. bb.msg.loggerDefaultVerbose = self.workerdata["logdefaultverbose"]
  273. bb.msg.loggerVerboseLogs = self.workerdata["logdefaultverboselogs"]
  274. bb.msg.loggerDefaultDomains = self.workerdata["logdefaultdomain"]
  275. self.data.setVar("PRSERV_HOST", self.workerdata["prhost"])
  276. def handle_ping(self, _):
  277. workerlog_write("Handling ping\n")
  278. logger.warn("Pong from bitbake-worker!")
  279. def handle_quit(self, data):
  280. workerlog_write("Handling quit\n")
  281. global normalexit
  282. normalexit = True
  283. sys.exit(0)
  284. def handle_runtask(self, data):
  285. fn, task, taskname, quieterrors, appends, taskdepdata = pickle.loads(data)
  286. workerlog_write("Handling runtask %s %s %s\n" % (task, fn, taskname))
  287. pid, pipein, pipeout = fork_off_task(self.cookercfg, self.data, self.workerdata, fn, task, taskname, appends, taskdepdata, quieterrors)
  288. self.build_pids[pid] = task
  289. self.build_pipes[pid] = runQueueWorkerPipe(pipein, pipeout)
  290. def process_waitpid(self):
  291. """
  292. Return none is there are no processes awaiting result collection, otherwise
  293. collect the process exit codes and close the information pipe.
  294. """
  295. try:
  296. pid, status = os.waitpid(-1, os.WNOHANG)
  297. if pid == 0 or os.WIFSTOPPED(status):
  298. return None
  299. except OSError:
  300. return None
  301. workerlog_write("Exit code of %s for pid %s\n" % (status, pid))
  302. if os.WIFEXITED(status):
  303. status = os.WEXITSTATUS(status)
  304. elif os.WIFSIGNALED(status):
  305. # Per shell conventions for $?, when a process exits due to
  306. # a signal, we return an exit code of 128 + SIGNUM
  307. status = 128 + os.WTERMSIG(status)
  308. task = self.build_pids[pid]
  309. del self.build_pids[pid]
  310. self.build_pipes[pid].close()
  311. del self.build_pipes[pid]
  312. worker_fire_prepickled("<exitcode>" + pickle.dumps((task, status)) + "</exitcode>")
  313. def handle_finishnow(self, _):
  314. if self.build_pids:
  315. logger.info("Sending SIGTERM to remaining %s tasks", len(self.build_pids))
  316. for k, v in self.build_pids.iteritems():
  317. try:
  318. os.kill(-k, signal.SIGTERM)
  319. os.waitpid(-1, 0)
  320. except:
  321. pass
  322. for pipe in self.build_pipes:
  323. self.build_pipes[pipe].read()
  324. try:
  325. worker = BitbakeWorker(sys.stdin)
  326. if not profiling:
  327. worker.serve()
  328. else:
  329. profname = "profile-worker.log"
  330. prof = profile.Profile()
  331. try:
  332. profile.Profile.runcall(prof, worker.serve)
  333. finally:
  334. prof.dump_stats(profname)
  335. bb.utils.process_profilelog(profname)
  336. except BaseException as e:
  337. if not normalexit:
  338. import traceback
  339. sys.stderr.write(traceback.format_exc())
  340. sys.stderr.write(str(e))
  341. while len(worker_queue):
  342. worker_flush()
  343. workerlog_write("exitting")
  344. sys.exit(0)