Fix dbapi connection instrument wrapper has no _sock member

Fixes open-telemetry#1353

Also:

Fix the check for the connection already being instrumented in instrument_connection()
Add tests for commit() and rollback()
Add a couple missing docstring items.
Add basepython to docker-tests to fix running the tests on macOS.

Author: Daniel Rogers

Diff for: CHANGELOG.md

@@ -31,6 +31,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#1413](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1413))
 - `opentelemetry-instrumentation-pyramid` Add support for regular expression matching and sanitization of HTTP headers.
   ([#1414](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1414))
+- `opentelemetry-instrumentation-pymysql` Add tests for commit() and rollback().
+  ([#1424](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1424))
 
 ### Fixed
 
@@ -40,6 +42,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#1333](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1333))
 - `opentelemetry-instrumentation-asgi` Make ASGIGetter.get() compare all keys in a case insensitive manner.
   ([#1333](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1333))
+- `opentelemetry-instrumentation-pymysql` Fix dbapi connection instrument wrapper has no _sock member.
+  ([#1424](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1424))
+- `opentelemetry-instrumentation-dbapi` Fix the check for the connection already being instrumented in instrument_connection().
+  ([#1424](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1424))
 
 ## [1.13.0-0.34b0](https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.13.0-0.34b0) - 2022-09-26
 

Diff for: instrumentation/opentelemetry-instrumentation-dbapi/src/opentelemetry/instrumentation/dbapi/__init__.py

@@ -79,6 +79,9 @@ def trace_integration(
         tracer_provider: The :class:`opentelemetry.trace.TracerProvider` to
             use. If omitted the current configured one is used.
         capture_parameters: Configure if db.statement.parameters should be captured.
+        enable_commenter: Flag to enable/disable sqlcommenter.
+        db_api_integration_factory: The `DatabaseApiIntegration` to use. If none is passed the
+            default one is used.
     """
     wrap_connect(
         __name__,
@@ -121,6 +124,8 @@ def wrap_connect(
             use. If omitted the current configured one is used.
         capture_parameters: Configure if db.statement.parameters should be captured.
         enable_commenter: Flag to enable/disable sqlcommenter.
+        db_api_integration_factory: The `DatabaseApiIntegration` to use. If none is passed the
+            default one is used.
         commenter_options: Configurations for tags to be appended at the sql query.
 
     """
@@ -197,7 +202,7 @@ def instrument_connection(
     Returns:
         An instrumented connection.
     """
-    if isinstance(connection, wrapt.ObjectProxy):
+    if isinstance(connection, _TracedConnectionProxy):
         _logger.warning("Connection already instrumented")
         return connection
 
@@ -326,6 +331,15 @@ class TracedConnectionProxy(type(connection), _TracedConnectionProxy):
         def __init__(self, connection):
             self._connection = connection
 
+            if hasattr(connection, "_sock"):
+                self._sock = connection._sock
+            if hasattr(connection, "_auth_plugin_name"):
+                self._auth_plugin_name = connection._auth_plugin_name
+            if hasattr(connection, "_closed"):
+                self._closed = connection._closed
+            if hasattr(connection, "_secure"):
+                self._secure = connection._secure
+
         def __getattr__(self, name):
             return object.__getattribute__(
                 object.__getattribute__(self, "_connection"), name

Diff for: tests/opentelemetry-docker-tests/tests/pymysql/test_pymysql_functional.py

@@ -109,3 +109,19 @@ def test_callproc(self):
         ):
             self._cursor.callproc("test", ())
             self.validate_spans("test")
+
+    def test_commit(self):
+        stmt = "INSERT INTO test (id) VALUES (%s)"
+        with self._tracer.start_as_current_span("rootSpan"):
+            data = (("4",), ("5",), ("6",))
+            self._cursor.executemany(stmt, data)
+            self._connection.commit()
+        self.validate_spans("INSERT")
+
+    def test_rollback(self):
+        stmt = "INSERT INTO test (id) VALUES (%s)"
+        with self._tracer.start_as_current_span("rootSpan"):
+            data = (("7",), ("8",), ("9",))
+            self._cursor.executemany(stmt, data)
+            self._connection.rollback()
+        self.validate_spans("INSERT")

Diff for: tox.ini

@@ -507,6 +507,7 @@ commands =
   python scripts/eachdist.py lint --check-only
 
 [testenv:docker-tests]
+basepython: python3.9
 deps =
   pip >= 20.3.3
   pytest