def get(self, ename):
"""Get an element data from a locked element.
Arguments:
ename - name of an element
Return:
dictionary representing an element
Raise:
QueueError - schema is unknown; unexpected data type in
the schema specification; missing mandatory
file of the element
OSError - problems opening/closing file
IOError - file read error
"""
if not self.type:
raise QueueError("unknown schema")
_check_element(ename)
if not self._is_locked(ename):
raise QueueError("cannot get %s: not locked" % ename)
data = {}
for dname in self.type.keys():
path = '%s/%s/%s' % (self.path, ename, dname)
try:
os.lstat(path)
except Exception:
error = sys.exc_info()[1]
if error.errno != errno.ENOENT:
raise OSError("cannot lstat(%s): %s" % (path, error))
if dname in self.mandatory:
raise QueueError("missing data file: %s" % path)
else:
continue
if self.type[dname] == 'binary':
data[dname] = _file_read(path, 0)
elif self.type[dname] == 'string':
data[dname] = _file_read(path, 1)
elif self.type[dname] == 'table':
data[dname] = _string2hash(_file_read(path, 1))
else:
raise QueueError("unexpected data type: %s" % self.type[dname])
return data
def get(self, ename):
"""Get an element data from a locked element.
Arguments:
ename - name of an element
Return:
dictionary representing an element
Raise:
QueueError - schema is unknown; unexpected data type in
the schema specification; missing mandatory
file of the element
OSError - problems opening/closing file
IOError - file read error
"""
if not self.type:
raise QueueError("unknown schema")
_check_element(ename)
if not self._is_locked(ename):
raise QueueError("cannot get %s: not locked" % ename)
data = {}
for dname in self.type.keys():
path = "%s/%s/%s" % (self.path, ename, dname)
try:
os.lstat(path)
except Exception:
error = sys.exc_info()[1]
if error.errno != errno.ENOENT:
raise OSError("cannot lstat(%s): %s" % (path, error))
if dname in self.mandatory:
raise QueueError("missing data file: %s" % path)
else:
continue
if self.type[dname] == "binary":
data[dname] = _file_read(path, 0)
elif self.type[dname] == "string":
data[dname] = _file_read(path, 1)
elif self.type[dname] == "table":
data[dname] = _string2hash(_file_read(path, 1))
else:
raise QueueError("unexpected data type: %s" % self.type[dname])
return data
def get(self, name):
"""Get locked element.
"""
return _file_read('%s/%s%s' % (self.path, name, LOCKED_SUFFIX), False)