return os.path.abspath(cinder.__file__).split('cinder/__init__.py')[0]
-def debug(arg):
- LOG.debug(_('debug in callback: %s'), arg)
- return arg
-
-
# Default symbols to use for passwords. Avoids visually confusing characters.
# ~6 bits per symbol
DEFAULT_PASSWORD_SYMBOLS = ('23456789', # Removed: 0,1
return saxutils.escape(value, {'"': '"', "'": '''})
-def utf8(value):
- """Try to turn a string into utf-8 if possible.
-
- """
- if isinstance(value, unicode):
- return value.encode('utf-8')
- elif isinstance(value, gettextutils.Message):
- return unicode(value).encode('utf-8')
- elif isinstance(value, str):
- return value
- else:
- raise ValueError("%s is not a string" % value)
-
-
def get_from_path(items, path):
"""Returns a list of items matching the specified path.
return get_from_path(results, remainder)
-def map_dict_keys(dict_, key_map):
- """Return a dict in which the dictionaries keys are mapped to new keys."""
- mapped = {}
- for key, value in dict_.iteritems():
- mapped_key = key_map[key] if key in key_map else key
- mapped[mapped_key] = value
- return mapped
-
-
-def check_isinstance(obj, cls):
- """Checks that obj is of type cls, and lets PyLint infer types."""
- if isinstance(obj, cls):
- return obj
- raise Exception(_('Expected object of type: %s') % (str(cls)))
- # TODO(justinsb): Can we make this better??
- return cls() # Ugly PyLint hack
-
-
def is_valid_boolstr(val):
"""Check if the provided string is a valid bool string or not."""
val = str(val).lower()
decorator("%s.%s" % (module, key), func))
-def timefunc(func):
- """Decorator that logs how long a particular function took to execute"""
- @functools.wraps(func)
- def inner(*args, **kwargs):
- start_time = time.time()
- try:
- return func(*args, **kwargs)
- finally:
- total_time = time.time() - start_time
- LOG.debug(_("timefunc: '%(name)s' took %(total_time).2f secs") %
- dict(name=func.__name__, total_time=total_time))
- return inner
-
-
def generate_glance_url():
"""Generate the URL to glance."""
# TODO(jk0): This will eventually need to take SSL into consideration
return "http://%s:%d" % (CONF.glance_host, CONF.glance_port)
-@contextlib.contextmanager
-def logging_error(message):
- """Catches exception, write message to the log, re-raise.
- This is a common refinement of save_and_reraise that writes a specific
- message to the log.
- """
- try:
- yield
- except Exception as error:
- with excutils.save_and_reraise_exception():
- LOG.exception(message)
-
-
def make_dev_path(dev, partition=None, base='/dev'):
"""Return a path to a particular device.
return checksum.hexdigest()
-@contextlib.contextmanager
-def temporary_mutation(obj, **kwargs):
- """Temporarily set the attr on a particular object to a given value then
- revert when finished.
-
- One use of this is to temporarily set the read_deleted flag on a context
- object:
-
- with temporary_mutation(context, read_deleted="yes"):
- do_something_that_needed_deleted_objects()
- """
- NOT_PRESENT = object()
-
- old_values = {}
- for attr, new_value in kwargs.items():
- old_values[attr] = getattr(obj, attr, NOT_PRESENT)
- setattr(obj, attr, new_value)
-
- try:
- yield
- finally:
- for attr, old_value in old_values.items():
- if old_value is NOT_PRESENT:
- del obj[attr]
- else:
- setattr(obj, attr, old_value)
-
-
def service_is_up(service):
"""Check whether a service is up based on last heartbeat."""
last_heartbeat = service['updated_at'] or service['created_at']
return abs(elapsed) <= CONF.service_down_time
-def generate_mac_address():
- """Generate an Ethernet MAC address."""
- # NOTE(vish): We would prefer to use 0xfe here to ensure that linux
- # bridge mac addresses don't change, but it appears to
- # conflict with libvirt, so we use the next highest octet
- # that has the unicast and locally administered bits set
- # properly: 0xfa.
- # Discussion: https://bugs.launchpad.net/cinder/+bug/921838
- mac = [0xfa, 0x16, 0x3e,
- random.randint(0x00, 0x7f),
- random.randint(0x00, 0xff),
- random.randint(0x00, 0xff)]
- return ':'.join(map(lambda x: "%02x" % x, mac))
-
-
def read_file_as_root(file_path):
"""Secure helper to read file as root."""
try:
yield subclass
-class UndoManager(object):
- """Provides a mechanism to facilitate rolling back a series of actions
- when an exception is raised.
- """
- def __init__(self):
- self.undo_stack = []
-
- def undo_with(self, undo_func):
- self.undo_stack.append(undo_func)
-
- def _rollback(self):
- for undo_func in reversed(self.undo_stack):
- undo_func()
-
- def rollback_and_reraise(self, msg=None, **kwargs):
- """Rollback a series of actions then re-raise the exception.
-
- .. note:: (sirp) This should only be called within an
- exception handler.
- """
- with excutils.save_and_reraise_exception():
- if msg:
- LOG.exception(msg, **kwargs)
-
- self._rollback()
-
-
def get_root_helper():
return 'sudo cinder-rootwrap %s' % CONF.rootwrap_config
Code Review / openstack-build / cinder-build.git / commitdiff