From 05f4d7aef413575b6ed26d6580d87ba99baec0c8 Mon Sep 17 00:00:00 2001 From: Peter Hamilton Date: Thu, 4 Apr 2019 10:42:39 -0400 Subject: [PATCH] Update the GetAttributeList payloads This change makes minor updates to the GetAttributeList payloads, fixing error messages, comments, and local variable names to comply with the current payload format. The corresponding unit test suite has been updated to reflect these changes. This change prepares the GetAttributeList payloads for future updates to support KMIP 2.0. --- .../messages/payloads/get_attribute_list.py | 126 ++++++++++++------ .../payloads/test_get_attribute_list.py | 126 ++++++------------ 2 files changed, 129 insertions(+), 123 deletions(-) diff --git a/kmip/core/messages/payloads/get_attribute_list.py b/kmip/core/messages/payloads/get_attribute_list.py index d7de060..c1eff8e 100644 --- a/kmip/core/messages/payloads/get_attribute_list.py +++ b/kmip/core/messages/payloads/get_attribute_list.py @@ -16,6 +16,7 @@ import six from kmip.core import enums +from kmip.core import exceptions from kmip.core import primitives from kmip.core import utils @@ -66,59 +67,67 @@ class GetAttributeListRequestPayload(primitives.Struct): tag=enums.Tags.UNIQUE_IDENTIFIER ) else: - raise TypeError("unique identifier must be a string") + raise TypeError("Unique identifier must be a string.") - def read(self, istream, kmip_version=enums.KMIPVersion.KMIP_1_0): + def read(self, input_buffer, kmip_version=enums.KMIPVersion.KMIP_1_0): """ Read the data encoding the GetAttributeList request payload and decode it into its constituent parts. Args: - istream (stream): A data stream containing encoded object data, - supporting a read method; usually a BytearrayStream object. + input_buffer (stream): A data stream containing encoded object + data, supporting a read method; usually a BytearrayStream + object. kmip_version (KMIPVersion): An enumeration defining the KMIP version with which the object will be decoded. Optional, defaults to KMIP 1.0. """ super(GetAttributeListRequestPayload, self).read( - istream, + input_buffer, kmip_version=kmip_version ) - tstream = utils.BytearrayStream(istream.read(self.length)) + local_buffer = utils.BytearrayStream(input_buffer.read(self.length)) - if self.is_tag_next(enums.Tags.UNIQUE_IDENTIFIER, tstream): + if self.is_tag_next(enums.Tags.UNIQUE_IDENTIFIER, local_buffer): self._unique_identifier = primitives.TextString( tag=enums.Tags.UNIQUE_IDENTIFIER ) - self._unique_identifier.read(tstream, kmip_version=kmip_version) + self._unique_identifier.read( + local_buffer, + kmip_version=kmip_version + ) else: self._unique_identifier = None - self.is_oversized(tstream) + self.is_oversized(local_buffer) - def write(self, ostream, kmip_version=enums.KMIPVersion.KMIP_1_0): + def write(self, output_buffer, kmip_version=enums.KMIPVersion.KMIP_1_0): """ Write the data encoding the GetAttributeList request payload to a stream. Args: - ostream (stream): A data stream in which to encode object data, - supporting a write method; usually a BytearrayStream object. + output_buffer (stream): A data stream in which to encode object + data, supporting a write method; usually a BytearrayStream + object. kmip_version (KMIPVersion): An enumeration defining the KMIP version with which the object will be encoded. Optional, defaults to KMIP 1.0. """ - tstream = utils.BytearrayStream() + local_buffer = utils.BytearrayStream() if self._unique_identifier: - self._unique_identifier.write(tstream, kmip_version=kmip_version) + self._unique_identifier.write( + local_buffer, + kmip_version=kmip_version + ) - self.length = tstream.length() + self.length = local_buffer.length() super(GetAttributeListRequestPayload, self).write( - ostream, + output_buffer, kmip_version=kmip_version ) - ostream.write(tstream.buffer) + output_buffer.write(local_buffer.buffer) def __repr__(self): uid = "unique_identifier={0}".format(self.unique_identifier) @@ -199,7 +208,7 @@ class GetAttributeListResponsePayload(primitives.Struct): tag=enums.Tags.UNIQUE_IDENTIFIER ) else: - raise TypeError("unique identifier must be a string") + raise TypeError("Unique identifier must be a string.") @property def attribute_names(self): @@ -221,7 +230,7 @@ class GetAttributeListResponsePayload(primitives.Struct): name = value[i] if not isinstance(name, six.string_types): raise TypeError( - "attribute_names must be a list of strings; " + "Attribute names must be a list of strings; " "item {0} has type {1}".format(i + 1, type(name)) ) if name not in names: @@ -235,69 +244,104 @@ class GetAttributeListResponsePayload(primitives.Struct): ) ) else: - raise TypeError("attribute_names must be a list of strings") + raise TypeError("Attribute names must be a list of strings.") - def read(self, istream, kmip_version=enums.KMIPVersion.KMIP_1_0): + def read(self, input_buffer, kmip_version=enums.KMIPVersion.KMIP_1_0): """ Read the data encoding the GetAttributeList response payload and decode it into its constituent parts. Args: - istream (stream): A data stream containing encoded object data, - supporting a read method; usually a BytearrayStream object. + input_buffer (stream): A data stream containing encoded object + data, supporting a read method; usually a BytearrayStream + object. kmip_version (KMIPVersion): An enumeration defining the KMIP version with which the object will be decoded. Optional, defaults to KMIP 1.0. + + Raises: + InvalidKmipEncoding: Raised if the unique identifier or attribute + names are missing from the encoded payload. """ super(GetAttributeListResponsePayload, self).read( - istream, + input_buffer, kmip_version=kmip_version ) - tstream = utils.BytearrayStream(istream.read(self.length)) + local_buffer = utils.BytearrayStream(input_buffer.read(self.length)) - if self.is_tag_next(enums.Tags.UNIQUE_IDENTIFIER, tstream): + if self.is_tag_next(enums.Tags.UNIQUE_IDENTIFIER, local_buffer): self._unique_identifier = primitives.TextString( tag=enums.Tags.UNIQUE_IDENTIFIER ) - self._unique_identifier.read(tstream, kmip_version=kmip_version) + self._unique_identifier.read( + local_buffer, + kmip_version=kmip_version + ) else: - self._unique_identifier = None + raise exceptions.InvalidKmipEncoding( + "The GetAttributeList response payload encoding is missing " + "the unique identifier." + ) names = list() - while self.is_tag_next(enums.Tags.ATTRIBUTE_NAME, tstream): + while self.is_tag_next(enums.Tags.ATTRIBUTE_NAME, local_buffer): name = primitives.TextString(tag=enums.Tags.ATTRIBUTE_NAME) - name.read(tstream, kmip_version=kmip_version) + name.read(local_buffer, kmip_version=kmip_version) names.append(name) + if len(names) == 0: + raise exceptions.InvalidKmipEncoding( + "The GetAttributeList response payload encoding is missing " + "the attribute names." + ) self._attribute_names = names - self.is_oversized(tstream) + self.is_oversized(local_buffer) - def write(self, ostream, kmip_version=enums.KMIPVersion.KMIP_1_0): + def write(self, output_buffer, kmip_version=enums.KMIPVersion.KMIP_1_0): """ Write the data encoding the GetAttributeList response payload to a stream. Args: - ostream (stream): A data stream in which to encode object data, - supporting a write method; usually a BytearrayStream object. + output_buffer (stream): A data stream in which to encode object + data, supporting a write method; usually a BytearrayStream + object. kmip_version (KMIPVersion): An enumeration defining the KMIP version with which the object will be encoded. Optional, defaults to KMIP 1.0. + + Raises: + InvalidField: Raised if the unique identifier or attribute name + are not defined. """ - tstream = utils.BytearrayStream() + local_buffer = utils.BytearrayStream() if self._unique_identifier: - self._unique_identifier.write(tstream, kmip_version=kmip_version) + self._unique_identifier.write( + local_buffer, + kmip_version=kmip_version + ) + else: + raise exceptions.InvalidField( + "The GetAttributeList response payload is missing the unique " + "identifier field." + ) - for attribute_name in self._attribute_names: - attribute_name.write(tstream, kmip_version=kmip_version) + if self._attribute_names: + for attribute_name in self._attribute_names: + attribute_name.write(local_buffer, kmip_version=kmip_version) + else: + raise exceptions.InvalidField( + "The GetAttributeList response payload is missing the " + "attribute names field." + ) - self.length = tstream.length() + self.length = local_buffer.length() super(GetAttributeListResponsePayload, self).write( - ostream, + output_buffer, kmip_version=kmip_version ) - ostream.write(tstream.buffer) + output_buffer.write(local_buffer.buffer) def __repr__(self): unique_identifier = "unique_identifier={0}".format( diff --git a/kmip/tests/unit/core/messages/payloads/test_get_attribute_list.py b/kmip/tests/unit/core/messages/payloads/test_get_attribute_list.py index a45822b..6f68f14 100644 --- a/kmip/tests/unit/core/messages/payloads/test_get_attribute_list.py +++ b/kmip/tests/unit/core/messages/payloads/test_get_attribute_list.py @@ -16,6 +16,7 @@ import testtools from kmip.core import enums +from kmip.core import exceptions from kmip.core import primitives from kmip.core import utils @@ -93,7 +94,7 @@ class TestGetAttributeListRequestPayload(testtools.TestCase): args = (payload, 'unique_identifier', 0) self.assertRaisesRegex( TypeError, - "unique identifier must be a string", + "Unique identifier must be a string.", setattr, *args ) @@ -441,7 +442,7 @@ class TestGetAttributeListResponsePayload(testtools.TestCase): args = (payload, 'unique_identifier', 0) self.assertRaisesRegex( TypeError, - "unique identifier must be a string", + "Unique identifier must be a string.", setattr, *args ) @@ -489,7 +490,7 @@ class TestGetAttributeListResponsePayload(testtools.TestCase): args = (payload, 'attribute_names', 0) self.assertRaisesRegex( TypeError, - "attribute_names must be a list of strings", + "Attribute names must be a list of strings.", setattr, *args ) @@ -508,7 +509,7 @@ class TestGetAttributeListResponsePayload(testtools.TestCase): ) self.assertRaisesRegex( TypeError, - "attribute_names must be a list of strings; " + "Attribute names must be a list of strings; " "item 2 has type {0}".format(type(0)), setattr, *args @@ -584,70 +585,43 @@ class TestGetAttributeListResponsePayload(testtools.TestCase): def test_read_with_no_unique_identifier(self): """ - Test that a GetAttributeList response payload with no ID can be read - from a data stream. + Test that an InvalidKmipEncoding error is raised when a + GetAttributeList response payload is read from a data stream with no + unique identifier. """ payload = payloads.GetAttributeListResponsePayload() self.assertEqual(None, payload._unique_identifier) self.assertEqual(list(), payload._attribute_names) - payload.read(self.encoding_sans_unique_identifier) - - self.assertEqual(None, payload.unique_identifier) - self.assertEqual(None, payload._unique_identifier) - self.assertEqual( - set(self.attribute_names), - set(payload.attribute_names) + args = (self.encoding_sans_unique_identifier, ) + self.assertRaisesRegex( + exceptions.InvalidKmipEncoding, + "The GetAttributeList response payload encoding is missing the " + "unique identifier.", + payload.read, + *args ) - for attribute_name in self.attribute_names: - self.assertIn( - primitives.TextString( - value=attribute_name, - tag=enums.Tags.ATTRIBUTE_NAME - ), - payload._attribute_names - ) def test_read_with_no_attribute_names(self): """ - Test that a GetAttributeList response payload with no attribute names - can be read from a data stream. + Test that an InvalidKmipEncoding error is raised when a + GetAttributeList response payload is read from a data stream with no + attribute names. """ payload = payloads.GetAttributeListResponsePayload() self.assertEqual(None, payload._unique_identifier) self.assertEqual(list(), payload._attribute_names) - payload.read(self.encoding_sans_attribute_names) - - self.assertEqual(self.unique_identifier, payload.unique_identifier) - self.assertEqual( - primitives.TextString( - value=self.unique_identifier, - tag=enums.Tags.UNIQUE_IDENTIFIER - ), - payload._unique_identifier + args = (self.encoding_sans_attribute_names, ) + self.assertRaisesRegex( + exceptions.InvalidKmipEncoding, + "The GetAttributeList response payload encoding is missing the " + "attribute names.", + payload.read, + *args ) - self.assertEqual(list(), payload.attribute_names) - self.assertEqual(list(), payload._attribute_names) - - def test_read_with_no_content(self): - """ - Test that a GetAttributeList response payload with no ID or attribute - names can be read from a data stream. - """ - payload = payloads.GetAttributeListResponsePayload() - - self.assertEqual(None, payload._unique_identifier) - self.assertEqual(list(), payload._attribute_names) - - payload.read(self.empty_encoding) - - self.assertEqual(None, payload.unique_identifier) - self.assertEqual(None, payload._unique_identifier) - self.assertEqual(list(), payload.attribute_names) - self.assertEqual(list(), payload._attribute_names) def test_write(self): """ @@ -666,51 +640,39 @@ class TestGetAttributeListResponsePayload(testtools.TestCase): def test_write_with_no_unique_identifier(self): """ - Test that a GetAttributeList response payload with no ID can be - written to a data stream. + Test that an InvalidField error is raised when a GetAttributeList + response payload is written to a data stream with no unique identifier. """ payload = payloads.GetAttributeListResponsePayload( None, self.attribute_names ) - stream = utils.BytearrayStream() - payload.write(stream) - - self.assertEqual( - len(self.encoding_sans_unique_identifier), - len(stream) - ) - self.assertEqual( - str(self.encoding_sans_unique_identifier), - str(stream) + args = (utils.BytearrayStream(), ) + self.assertRaisesRegex( + exceptions.InvalidField, + "The GetAttributeList response payload is missing the unique " + "identifier field.", + payload.write, + *args ) def test_write_with_no_attribute_names(self): """ - Test that a GetAttributeList response payload with no attribute names - can be written to a data stream. + Test that an InvalidField error is raised when a GetAttributeList + response payload is written to a data stream with no attribute names. """ payload = payloads.GetAttributeListResponsePayload( self.unique_identifier, None ) - stream = utils.BytearrayStream() - payload.write(stream) - - self.assertEqual(len(self.encoding_sans_attribute_names), len(stream)) - self.assertEqual(str(self.encoding_sans_attribute_names), str(stream)) - - def test_write_with_no_content(self): - """ - Test that a GetAttributeList response payload with no ID or attribute - names can be written to a data stream. - """ - payload = payloads.GetAttributeListResponsePayload() - stream = utils.BytearrayStream() - payload.write(stream) - - self.assertEqual(len(self.empty_encoding), len(stream)) - self.assertEqual(str(self.empty_encoding), str(stream)) + args = (utils.BytearrayStream(), ) + self.assertRaisesRegex( + exceptions.InvalidField, + "The GetAttributeList response payload is missing the attribute " + "names field.", + payload.write, + *args + ) def test_repr(self): """