Add commit method for ConfluentKafkaInstrumentor's ProxiedConsumer (#1656)

Author: mrajashree

CHANGELOG.md

@@ -46,6 +46,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#1435](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1435))
 - mongo db - fix db statement capturing
   ([#1512](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1512))
+- Add commit method for ConfluentKafkaInstrumentor's ProxiedConsumer
+  ([#1656](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1656))
 
 ## Version 1.15.0/0.36b0 (2022-12-10)
 

instrumentation/opentelemetry-instrumentation-confluent-kafka/src/opentelemetry/instrumentation/confluent_kafka/__init__.py

@@ -173,6 +173,9 @@ def __init__(self, consumer: Consumer, tracer: Tracer):
     def committed(self, partitions, timeout=-1):
         return self._consumer.committed(partitions, timeout)
 
+    def commit(self, *args, **kwargs):
+        return self._consumer.commit(*args, **kwargs)
+
     def consume(
         self, num_messages=1, *args, **kwargs
     ):  # pylint: disable=keyword-arg-before-vararg

instrumentation/opentelemetry-instrumentation-confluent-kafka/tests/test_instrumentation.py

@@ -58,3 +58,18 @@ def test_instrument_api(self) -> None:
 
         consumer = instrumentation.uninstrument_consumer(consumer)
         self.assertEqual(consumer.__class__, Consumer)
+
+    def test_consumer_commit_method_exists(self) -> None:
+        instrumentation = ConfluentKafkaInstrumentor()
+
+        consumer = Consumer(
+            {
+                "bootstrap.servers": "localhost:29092",
+                "group.id": "mygroup",
+                "auto.offset.reset": "earliest",
+            }
+        )
+
+        consumer = instrumentation.instrument_consumer(consumer)
+        self.assertEqual(consumer.__class__, ProxiedConsumer)
+        self.assertTrue(hasattr(consumer, "commit"))