Merge "Sync oslo lockutils for "fix lockutils.lock() to make it thread-safe""
This commit is contained in:
commit
36c3cd9af3
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@ -1,5 +1,3 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation.
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# Copyright 2012, Red Hat, Inc.
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#
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@ -24,7 +22,9 @@ import sys
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import time
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import traceback
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from nova.openstack.common.gettextutils import _
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import six
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from nova.openstack.common.gettextutils import _ # noqa
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class save_and_reraise_exception(object):
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@ -65,7 +65,7 @@ class save_and_reraise_exception(object):
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self.tb))
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return False
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if self.reraise:
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raise self.type_, self.value, self.tb
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six.reraise(self.type_, self.value, self.tb)
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def forever_retry_uncaught_exceptions(infunc):
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@ -77,7 +77,8 @@ def forever_retry_uncaught_exceptions(infunc):
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try:
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return infunc(*args, **kwargs)
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except Exception as exc:
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if exc.message == last_exc_message:
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this_exc_message = six.u(str(exc))
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if this_exc_message == last_exc_message:
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exc_count += 1
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else:
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exc_count = 1
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@ -85,12 +86,12 @@ def forever_retry_uncaught_exceptions(infunc):
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# the exception message changes
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cur_time = int(time.time())
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if (cur_time - last_log_time > 60 or
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exc.message != last_exc_message):
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this_exc_message != last_exc_message):
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logging.exception(
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_('Unexpected exception occurred %d time(s)... '
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'retrying.') % exc_count)
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last_log_time = cur_time
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last_exc_message = exc.message
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last_exc_message = this_exc_message
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exc_count = 0
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# This should be a very rare event. In case it isn't, do
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# a sleep.
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@ -1,5 +1,3 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation.
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# All Rights Reserved.
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#
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@ -19,6 +17,7 @@
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import contextlib
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import errno
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import os
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import tempfile
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from nova.openstack.common import excutils
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from nova.openstack.common.gettextutils import _ # noqa
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@ -109,3 +108,30 @@ def file_open(*args, **kwargs):
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state at all (for unit tests)
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"""
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return file(*args, **kwargs)
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def write_to_tempfile(content, path=None, suffix='', prefix='tmp'):
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"""Create temporary file or use existing file.
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This util is needed for creating temporary file with
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specified content, suffix and prefix. If path is not None,
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it will be used for writing content. If the path doesn't
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exist it'll be created.
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:param content: content for temporary file.
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:param path: same as parameter 'dir' for mkstemp
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:param suffix: same as parameter 'suffix' for mkstemp
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:param prefix: same as parameter 'prefix' for mkstemp
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For example: it can be used in database tests for creating
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configuration files.
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"""
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if path:
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ensure_tree(path)
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(fd, path) = tempfile.mkstemp(suffix=suffix, dir=path, prefix=prefix)
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try:
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os.write(fd, content)
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finally:
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os.close(fd)
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return path
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@ -1,5 +1,3 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 Red Hat, Inc.
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# Copyright 2013 IBM Corp.
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# All Rights Reserved.
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@ -1,5 +1,3 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation.
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# All Rights Reserved.
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#
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@ -1,5 +1,3 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# Copyright 2011 Justin Santa Barbara
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@ -124,7 +122,7 @@ def to_primitive(value, convert_instances=False, convert_datetime=True,
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level=level,
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max_depth=max_depth)
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if isinstance(value, dict):
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return dict((k, recursive(v)) for k, v in value.iteritems())
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return dict((k, recursive(v)) for k, v in six.iteritems(value))
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elif isinstance(value, (list, tuple)):
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return [recursive(lv) for lv in value]
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@ -1,5 +1,3 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation.
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# All Rights Reserved.
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#
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@ -1,5 +1,3 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation.
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# All Rights Reserved.
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#
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@ -20,6 +18,10 @@ import contextlib
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import errno
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import functools
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import os
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import shutil
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import subprocess
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import sys
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import tempfile
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import threading
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import time
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import weakref
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@ -39,6 +41,7 @@ util_opts = [
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cfg.BoolOpt('disable_process_locking', default=False,
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help='Whether to disable inter-process locks'),
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cfg.StrOpt('lock_path',
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default=os.environ.get("NOVA_LOCK_PATH"),
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help=('Directory to use for lock files.'))
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]
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@ -131,6 +134,7 @@ else:
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InterProcessLock = _PosixLock
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_semaphores = weakref.WeakValueDictionary()
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_semaphores_lock = threading.Lock()
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@contextlib.contextmanager
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@ -153,15 +157,12 @@ def lock(name, lock_file_prefix=None, external=False, lock_path=None):
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special location for external lock files to live. If nothing is set, then
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CONF.lock_path is used as a default.
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"""
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# NOTE(soren): If we ever go natively threaded, this will be racy.
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# See http://stackoverflow.com/questions/5390569/dyn
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# amically-allocating-and-destroying-mutexes
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sem = _semaphores.get(name, threading.Semaphore())
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if name not in _semaphores:
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# this check is not racy - we're already holding ref locally
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# so GC won't remove the item and there was no IO switch
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# (only valid in greenthreads)
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_semaphores[name] = sem
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with _semaphores_lock:
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try:
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sem = _semaphores[name]
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except KeyError:
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sem = threading.Semaphore()
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_semaphores[name] = sem
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with sem:
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LOG.debug(_('Got semaphore "%(lock)s"'), {'lock': name})
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@ -276,3 +277,27 @@ def synchronized_with_prefix(lock_file_prefix):
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"""
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return functools.partial(synchronized, lock_file_prefix=lock_file_prefix)
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def main(argv):
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"""Create a dir for locks and pass it to command from arguments
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If you run this:
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python -m openstack.common.lockutils python setup.py testr <etc>
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a temporary directory will be created for all your locks and passed to all
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your tests in an environment variable. The temporary dir will be deleted
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afterwards and the return value will be preserved.
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"""
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lock_dir = tempfile.mkdtemp()
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os.environ["NOVA_LOCK_PATH"] = lock_dir
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try:
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ret_val = subprocess.call(argv[1:])
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finally:
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shutil.rmtree(lock_dir, ignore_errors=True)
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return ret_val
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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@ -1,5 +1,3 @@
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation.
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# All Rights Reserved.
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#
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@ -178,6 +176,15 @@ def delta_seconds(before, after):
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datetime objects (as a float, to microsecond resolution).
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"""
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delta = after - before
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return total_seconds(delta)
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def total_seconds(delta):
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"""Return the total seconds of datetime.timedelta object.
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Compute total seconds of datetime.timedelta, datetime.timedelta
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doesn't have method total_seconds in Python2.6, calculate it manually.
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"""
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try:
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return delta.total_seconds()
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except AttributeError:
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