Fix falcon-instrumentation _handle_exception method to remove pylint disables (#4207)

* Fix falcon-instrumentation _handle_exception method to remove pylint disables

* Refactor _handle_exception method for Falcon 3

* try fix

Signed-off-by: emdneto <9735060+emdneto@users.noreply.github.com>

* Add CHANGELOG entry for falcon _handle_exception refactor (#4207)

---------

Signed-off-by: emdneto <9735060+emdneto@users.noreply.github.com>
Co-authored-by: Emídio Neto <9735060+emdneto@users.noreply.github.com>
Co-authored-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>

CHANGELOG.md

@@ -121,6 +121,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#4078](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4171))
 - `opentelemetry-instrumentation-aiohttp-server`: fix HTTP error inconsistencies
   ([#4175](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4175))
+- `opentelemetry-instrumentation-falcon`: Refactor `_handle_exception` to remove pylint disables
+  ([#4207](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4207))
 - `opentelemetry-docker-tests` Fix docker-tests assumption by Postgres-Sqlalchemy case about scope of metrics
   ([#4258](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4258))
 - `opentelemetry-instrumentation-threading`: fix AttributeError when Thread is run without starting

instrumentation/opentelemetry-instrumentation-falcon/src/opentelemetry/instrumentation/falcon/__init__.py

@@ -328,33 +328,22 @@ class _InstrumentedFalconAPI(getattr(falcon, _instrument_app)):
         if self in _InstrumentedFalconAPI._instrumented_falcon_apps:
             _InstrumentedFalconAPI._instrumented_falcon_apps.remove(self)
 
-    def _handle_exception(self, arg1, arg2, arg3, arg4):  # pylint: disable=C0103,W0237
-        # Falcon 3 does not execute middleware within the context of the exception
-        # so we capture the exception here and save it into the env dict
-
-        # Translation layer for handling the changed arg position of "ex" in Falcon > 2 vs
-        # Falcon < 2
+    def _handle_exception(self, *args):
+        # Falcon 3 does not execute middleware within the context
+        # of the exception so we capture the exception here and
+        # save it into the env dict
         if not self._is_instrumented_by_opentelemetry:
-            return super()._handle_exception(arg1, arg2, arg3, arg4)
+            return super()._handle_exception(*args)
 
         if _falcon_version == 1:
-            ex = arg1
-            req = arg2
-            resp = arg3
-            params = arg4
+            _, req, _, _ = args  # ex, req, resp, params
         else:
-            req = arg1
-            resp = arg2
-            ex = arg3
-            params = arg4
+            req, _, _, _ = args  # req, resp, ex, params
 
         _, exc, _ = exc_info()
         req.env[_ENVIRON_EXC] = exc
 
-        if _falcon_version == 1:
-            return super()._handle_exception(ex, req, resp, params)  # pylint: disable=W1114
-
-        return super()._handle_exception(req, resp, ex, params)
+        return super()._handle_exception(*args)
 
     def __call__(self, env, start_response):
         # pylint: disable=E1101