Release/v1.7.0 (#201)

* chore: Fix typings errors and cleanup code a bit

Signed-off-by: Yurii Serhiichuk <savik.ne@gmail.com>

* chore: Use `AnyStr` shortcut instead of `Union[bytes, str]`

Signed-off-by: Yurii Serhiichuk <savik.ne@gmail.com>

* chore: Bump version.

Signed-off-by: Yurii Serhiichuk <savik.ne@gmail.com>

* Update the changelog

Signed-off-by: Yurii Serhiichuk <savik.ne@gmail.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Signed-off-by: Yurii Serhiichuk <savik.ne@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

CHANGELOG.md

@@ -6,6 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.7.0] — 2022-11-17
+### Added
+- Added [Kafka](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/bindings/kafka-protocol-binding.md)
+  support ([#197], thanks [David Martines](https://github.com/davidwmartines))
+
 ## [1.6.2] — 2022-10-18
 ### Added
 - Added `get_attributes` API to the `CloudEvent` API. The method returns a read-only
@@ -152,6 +157,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Initial release
 
+[1.7.0]: https://github.com/cloudevents/sdk-python/compare/1.6.0...1.7.0
 [1.6.2]: https://github.com/cloudevents/sdk-python/compare/1.6.1...1.6.2
 [1.6.1]: https://github.com/cloudevents/sdk-python/compare/1.6.0...1.6.1
 [1.6.0]: https://github.com/cloudevents/sdk-python/compare/1.5.0...1.6.0
@@ -218,3 +224,4 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#188]: https://github.com/cloudevents/sdk-python/pull/188
 [#191]: https://github.com/cloudevents/sdk-python/pull/191
 [#195]: https://github.com/cloudevents/sdk-python/pull/195
+[#197]: https://github.com/cloudevents/sdk-python/pull/197

cloudevents/__init__.py

@@ -12,4 +12,4 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-__version__ = "1.6.2"
+__version__ = "1.7.0"

cloudevents/kafka/conversion.py

@@ -38,18 +38,18 @@ class KafkaMessage(typing.NamedTuple):
     The dictionary of message headers key/values.
     """
 
-    key: typing.Optional[typing.Union[bytes, str]]
+    key: typing.Optional[typing.AnyStr]
     """
     The message key.
     """
 
-    value: typing.Union[bytes, str]
+    value: typing.AnyStr
     """
     The message value.
     """
 
 
-KeyMapper = typing.Callable[[AnyCloudEvent], typing.Union[bytes, str]]
+KeyMapper = typing.Callable[[AnyCloudEvent], typing.AnyStr]
 """
 A callable function that creates a Kafka message key, given a CloudEvent instance.
 """
@@ -174,7 +174,7 @@ def to_structured(
             f"Failed to map message key with error: {type(e).__name__}('{e}')"
         )
 
-    attrs = event.get_attributes().copy()
+    attrs: dict[str, typing.Any] = dict(event.get_attributes())
 
     try:
         data = data_marshaller(event.data)
@@ -208,7 +208,7 @@ def from_structured(
     message: KafkaMessage,
     event_type: typing.Optional[typing.Type[AnyCloudEvent]] = None,
     data_unmarshaller: typing.Optional[types.MarshallerType] = None,
-    envelope_unmarshaller: typing.Optional[types.MarshallerType] = None,
+    envelope_unmarshaller: typing.Optional[types.UnmarshallerType] = None,
 ) -> AnyCloudEvent:
     """
     Returns a CloudEvent from a KafkaMessage in structured format.
@@ -232,20 +232,20 @@ def from_structured(
             "Failed to unmarshall message with error: " f"{type(e).__name__}('{e}')"
         )
 
-    attributes = {}
+    attributes: dict[str, typing.Any] = {}
     if message.key is not None:
         attributes["partitionkey"] = message.key
 
+    data: typing.Optional[typing.Any] = None
     for name, value in structure.items():
-        decoder = lambda x: x
-        if name == "data":
-            decoder = lambda v: data_unmarshaller(v)
-        if name == "data_base64":
-            decoder = lambda v: data_unmarshaller(base64.b64decode(v))
-            name = "data"
-
         try:
-            decoded_value = decoder(value)
+            if name == "data":
+                decoded_value = data_unmarshaller(value)
+            elif name == "data_base64":
+                decoded_value = data_unmarshaller(base64.b64decode(value))
+                name = "data"
+            else:
+                decoded_value = value
         except Exception as e:
             raise cloud_exceptions.DataUnmarshallerError(
                 "Failed to unmarshall data with error: " f"{type(e).__name__}('{e}')"

cloudevents/tests/test_kafka_conversions.py

@@ -71,7 +71,7 @@ class KafkaConversionTestBase:
         return simple_serialize
 
     @pytest.fixture
-    def custom_unmarshaller(self) -> types.MarshallerType:
+    def custom_unmarshaller(self) -> types.UnmarshallerType:
         return simple_deserialize
 
     def test_custom_marshaller_can_talk_to_itself(