def set_filter(self,
value,
name=constants.STRING_FILTER,
descriptor=constants.STRING_FILTER):
"""Set a filter on the endpoint. Only one filter
can be applied to an endpoint.
:param value: The filter to apply to the endpoint. Set to None for a NULL filter.
:type value: bytes or str or None
:param name: The name of the filter. This will be encoded as
an AMQP Symbol. By default this is set to b'apache.org:selector-filter:string'.
:type name: bytes
:param descriptor: The descriptor used if the filter is to be encoded as a described value.
This will be encoded as an AMQP Symbol. By default this is set to b'apache.org:selector-filter:string'.
Set to None if the filter should not be encoded as a described value.
:type descriptor: bytes or None
"""
value = value.encode(self._encoding) if isinstance(
value, six.text_type) else value
filter_set = c_uamqp.dict_value()
filter_key = c_uamqp.symbol_value(name)
filter_value = utils.data_factory(value, encoding=self._encoding)
if value is not None and descriptor is not None:
descriptor = c_uamqp.symbol_value(descriptor)
filter_value = c_uamqp.described_value(descriptor, filter_value)
filter_set[filter_key] = filter_value
self._address.filter_set = filter_set
def get_filter(self, name=constants.STRING_FILTER):
"""Get the filter on the source.
:param name: The name of the filter. This will be encoded as
an AMQP Symbol. By default this is set to b'apache.org:selector-filter:string'.
:type name: bytes
"""
try:
filter_key = c_uamqp.symbol_value(name)
return self._address.filter_set[filter_key].value
except (TypeError, KeyError):
return None
def set_filter(self, value, name=constants.STRING_FILTER):
"""Set a filter on the endpoint. Only one filter
can be applied to an endpoint.
:param value: The filter to apply to the endpoint.
:type value: bytes or str
:param name: The name of the filter. This will be encoded as
an AMQP Symbol and will also be used as the filter descriptor.
By default this is set to b'apache.org:selector-filter:string'.
:type name: bytes
"""
value = value.encode(self._encoding) if isinstance(value,
str) else value
filter_set = c_uamqp.dict_value()
filter_key = c_uamqp.symbol_value(name)
descriptor = c_uamqp.symbol_value(name)
filter_value = c_uamqp.string_value(value)
described_filter_value = c_uamqp.described_value(
descriptor, filter_value)
self._filters.append((descriptor, filter_value))
filter_set[filter_key] = described_filter_value
self._address.filter_set = filter_set
def _c_wrapper(self, value, encoding='UTF-8'):
value = value.encode(encoding) if isinstance(value, str) else value
return c_uamqp.symbol_value(value)
def test_symbol_value():
value = c_uamqp.symbol_value(b'Test')
assert value.value == b'Test'
assert value.type == c_uamqp.AMQPType.SymbolValue
assert str(value) == "Test"