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      1 # Copyright (C) 2011 Google Inc. All rights reserved.
      2 #
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions are
      5 # met:
      6 #
      7 #     * Redistributions of source code must retain the above copyright
      8 # notice, this list of conditions and the following disclaimer.
      9 #     * Redistributions in binary form must reproduce the above
     10 # copyright notice, this list of conditions and the following disclaimer
     11 # in the documentation and/or other materials provided with the
     12 # distribution.
     13 #     * Neither the name of Google Inc. nor the names of its
     14 # contributors may be used to endorse or promote products derived from
     15 # this software without specific prior written permission.
     16 #
     17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 """Handle messages from the TestRunner and execute actual tests."""
     30 
     31 import logging
     32 import sys
     33 import time
     34 
     35 from webkitpy.common.system import stack_utils
     36 
     37 from webkitpy.layout_tests.layout_package import manager_worker_broker
     38 from webkitpy.layout_tests.layout_package import worker_mixin
     39 
     40 
     41 _log = logging.getLogger(__name__)
     42 
     43 
     44 class Worker(manager_worker_broker.AbstractWorker, worker_mixin.WorkerMixin):
     45     def __init__(self, worker_connection, worker_number, options):
     46         self._worker_connection = worker_connection
     47         self._worker_number = worker_number
     48         self._options = options
     49         self._name = 'worker/%d' % worker_number
     50         self._done = False
     51         self._canceled = False
     52         self._port = None
     53 
     54     def __del__(self):
     55         self.cleanup()
     56 
     57     def cancel(self):
     58         """Attempt to abort processing (best effort)."""
     59         self._canceled = True
     60 
     61     def is_done(self):
     62         return self._done or self._canceled
     63 
     64     def name(self):
     65         return self._name
     66 
     67     def run(self, port):
     68         self.safe_init(port)
     69 
     70         exception_msg = ""
     71         _log.debug("%s starting" % self._name)
     72 
     73         try:
     74             self._worker_connection.run_message_loop()
     75             if not self.is_done():
     76                 raise AssertionError("%s: ran out of messages in worker queue."
     77                                      % self._name)
     78         except KeyboardInterrupt:
     79             exception_msg = ", interrupted"
     80         except:
     81             exception_msg = ", exception raised"
     82         finally:
     83             _log.debug("%s done%s" % (self._name, exception_msg))
     84             if exception_msg:
     85                 exception_type, exception_value, exception_traceback = sys.exc_info()
     86                 stack_utils.log_traceback(_log.error, exception_traceback)
     87                 # FIXME: Figure out how to send a message with a traceback.
     88                 self._worker_connection.post_message('exception',
     89                     (exception_type, exception_value, None))
     90             self._worker_connection.post_message('done')
     91 
     92     def handle_test_list(self, src, list_name, test_list):
     93         if list_name == "tests_to_http_lock":
     94             self.start_servers_with_lock()
     95 
     96         start_time = time.time()
     97         num_tests = 0
     98         for test_input in test_list:
     99             self._run_test(test_input)
    100             num_tests += 1
    101             self._worker_connection.yield_to_broker()
    102 
    103         elapsed_time = time.time() - start_time
    104         self._worker_connection.post_message('finished_list', list_name, num_tests, elapsed_time)
    105 
    106         if self._has_http_lock:
    107             self.stop_servers_with_lock()
    108 
    109     def handle_stop(self, src):
    110         self._done = True
    111 
    112     def _run_test(self, test_input):
    113         test_timeout_sec = self.timeout(test_input)
    114         start = time.time()
    115         self._worker_connection.post_message('started_test', test_input, test_timeout_sec)
    116 
    117         result = self.run_test_with_timeout(test_input, test_timeout_sec)
    118 
    119         elapsed_time = time.time() - start
    120         self._worker_connection.post_message('finished_test', result, elapsed_time)
    121 
    122         self.clean_up_after_test(test_input, result)
    123