Add type hints to BaseInstrumentor (open-telemetry#3084)

Author: Kludex

Diff for: opentelemetry-instrumentation/src/opentelemetry/instrumentation/dependencies.py

@@ -12,8 +12,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import annotations
+
 from logging import getLogger
-from typing import Collection, Optional, Union
+from typing import Collection
 
 from packaging.requirements import InvalidRequirement, Requirement
 
@@ -27,10 +29,10 @@
 
 
 class DependencyConflict:
-    required: str = None
-    found: Optional[str] = None
+    required: str | None = None
+    found: str | None = None
 
-    def __init__(self, required, found=None):
+    def __init__(self, required: str | None, found: str | None = None):
         self.required = required
         self.found = found
 
@@ -40,7 +42,7 @@ def __str__(self):
 
 def get_dist_dependency_conflicts(
     dist: Distribution,
-) -> Optional[DependencyConflict]:
+) -> DependencyConflict | None:
     instrumentation_deps = []
     extra = "extra"
     instruments = "instruments"
@@ -57,8 +59,8 @@ def get_dist_dependency_conflicts(
 
 
 def get_dependency_conflicts(
-    deps: Collection[Union[str, Requirement]],
-) -> Optional[DependencyConflict]:
+    deps: Collection[str | Requirement],
+) -> DependencyConflict | None:
     for dep in deps:
         if isinstance(dep, Requirement):
             req = dep

Diff for: opentelemetry-instrumentation/src/opentelemetry/instrumentation/instrumentor.py

@@ -17,9 +17,11 @@
 OpenTelemetry Base Instrumentor
 """
 
+from __future__ import annotations
+
 from abc import ABC, abstractmethod
 from logging import getLogger
-from typing import Collection, Optional
+from typing import Any, Collection
 
 from opentelemetry.instrumentation._semconv import (
     _OpenTelemetrySemanticConventionStability,
@@ -33,7 +35,7 @@
 
 
 class BaseInstrumentor(ABC):
-    """An ABC for instrumentors
+    """An ABC for instrumentors.
 
     Child classes of this ABC should instrument specific third
     party libraries or frameworks either by using the
@@ -74,18 +76,18 @@ def instrumentation_dependencies(self) -> Collection[str]:
         is present in the environment.
         """
 
-    def _instrument(self, **kwargs):
+    def _instrument(self, **kwargs: Any):
         """Instrument the library"""
 
     @abstractmethod
-    def _uninstrument(self, **kwargs):
+    def _uninstrument(self, **kwargs: Any):
         """Uninstrument the library"""
 
-    def _check_dependency_conflicts(self) -> Optional[DependencyConflict]:
+    def _check_dependency_conflicts(self) -> DependencyConflict | None:
         dependencies = self.instrumentation_dependencies()
         return get_dependency_conflicts(dependencies)
 
-    def instrument(self, **kwargs):
+    def instrument(self, **kwargs: Any):
         """Instrument the library
 
         This method will be called without any optional arguments by the
@@ -117,7 +119,7 @@ def instrument(self, **kwargs):
         self._is_instrumented_by_opentelemetry = True
         return result
 
-    def uninstrument(self, **kwargs):
+    def uninstrument(self, **kwargs: Any):
         """Uninstrument the library
 
         See ``BaseInstrumentor.instrument`` for more information regarding the