DB-API instrumentor populates span after sqlcomment creation, not before (open-telemetry#2935)

Author: tammy-baylis-swi

CHANGELOG.md

@@ -44,6 +44,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#2635](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2635))
 - `opentelemetry-instrumentation` Add support for string based dotted module paths in unwrap
   ([#2919](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2919))
+- `opentelemetry-instrumentation-dbapi` Add sqlcomment to `db.statement` attribute
+  ([#2935](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2935))
 
 ### Fixed
 

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

@@ -492,49 +492,54 @@ def traced_execution(
         with self._db_api_integration._tracer.start_as_current_span(
             name, kind=SpanKind.CLIENT
         ) as span:
-            self._populate_span(span, cursor, *args)
-            if args and self._commenter_enabled:
-                try:
-                    args_list = list(args)
-
-                    # lazy capture of mysql-connector client version using cursor
-                    if (
-                        self._db_api_integration.database_system == "mysql"
-                        and self._db_api_integration.connect_module.__name__
-                        == "mysql.connector"
-                        and not self._db_api_integration.commenter_data[
-                            "mysql_client_version"
-                        ]
-                    ):
-                        self._db_api_integration.commenter_data[
-                            "mysql_client_version"
-                        ] = cursor._cnx._cmysql.get_client_info()
-
-                    commenter_data = dict(
-                        self._db_api_integration.commenter_data
-                    )
-                    if self._commenter_options.get(
-                        "opentelemetry_values", True
-                    ):
-                        commenter_data.update(**_get_opentelemetry_values())
-
-                    # Filter down to just the requested attributes.
-                    commenter_data = {
-                        k: v
-                        for k, v in commenter_data.items()
-                        if self._commenter_options.get(k, True)
-                    }
-                    statement = _add_sql_comment(
-                        args_list[0], **commenter_data
-                    )
-
-                    args_list[0] = statement
-                    args = tuple(args_list)
-
-                except Exception as exc:  # pylint: disable=broad-except
-                    _logger.exception(
-                        "Exception while generating sql comment: %s", exc
-                    )
+            if span.is_recording():
+                if args and self._commenter_enabled:
+                    try:
+                        args_list = list(args)
+
+                        # lazy capture of mysql-connector client version using cursor
+                        if (
+                            self._db_api_integration.database_system == "mysql"
+                            and self._db_api_integration.connect_module.__name__
+                            == "mysql.connector"
+                            and not self._db_api_integration.commenter_data[
+                                "mysql_client_version"
+                            ]
+                        ):
+                            self._db_api_integration.commenter_data[
+                                "mysql_client_version"
+                            ] = cursor._cnx._cmysql.get_client_info()
+
+                        commenter_data = dict(
+                            self._db_api_integration.commenter_data
+                        )
+                        if self._commenter_options.get(
+                            "opentelemetry_values", True
+                        ):
+                            commenter_data.update(
+                                **_get_opentelemetry_values()
+                            )
+
+                        # Filter down to just the requested attributes.
+                        commenter_data = {
+                            k: v
+                            for k, v in commenter_data.items()
+                            if self._commenter_options.get(k, True)
+                        }
+                        statement = _add_sql_comment(
+                            args_list[0], **commenter_data
+                        )
+
+                        args_list[0] = statement
+                        args = tuple(args_list)
+
+                    except Exception as exc:  # pylint: disable=broad-except
+                        _logger.exception(
+                            "Exception while generating sql comment: %s", exc
+                        )
+
+                self._populate_span(span, cursor, *args)
+
             return query_method(*args, **kwargs)
 
 

instrumentation/opentelemetry-instrumentation-dbapi/tests/test_dbapi_integration.py

@@ -14,6 +14,7 @@
 
 
 import logging
+import re
 from unittest import mock
 
 from opentelemetry import context
@@ -306,6 +307,44 @@ def __getattr__(self, name):
             r"Select 1 /\*dbapi_level='1.0',dbapi_threadsafety='unknown',driver_paramstyle='unknown',libpq_version=123,traceparent='\d{1,2}-[a-zA-Z0-9_]{32}-[a-zA-Z0-9_]{16}-\d{1,2}'\*/;",
         )
 
+    def test_executemany_comment_matches_db_statement_attribute(self):
+        connect_module = mock.MagicMock()
+        connect_module.__version__ = mock.MagicMock()
+        connect_module.__libpq_version__ = 123
+        connect_module.apilevel = 123
+        connect_module.threadsafety = 123
+        connect_module.paramstyle = "test"
+
+        db_integration = dbapi.DatabaseApiIntegration(
+            "testname",
+            "postgresql",
+            enable_commenter=True,
+            commenter_options={"db_driver": False, "dbapi_level": False},
+            connect_module=connect_module,
+        )
+        mock_connection = db_integration.wrapped_connection(
+            mock_connect, {}, {}
+        )
+        cursor = mock_connection.cursor()
+        cursor.executemany("Select 1;")
+        self.assertRegex(
+            cursor.query,
+            r"Select 1 /\*dbapi_threadsafety=123,driver_paramstyle='test',libpq_version=123,traceparent='\d{1,2}-[a-zA-Z0-9_]{32}-[a-zA-Z0-9_]{16}-\d{1,2}'\*/;",
+        )
+        spans_list = self.memory_exporter.get_finished_spans()
+        self.assertEqual(len(spans_list), 1)
+        span = spans_list[0]
+        self.assertRegex(
+            span.attributes[SpanAttributes.DB_STATEMENT],
+            r"Select 1 /\*dbapi_threadsafety=123,driver_paramstyle='test',libpq_version=123,traceparent='\d{1,2}-[a-zA-Z0-9_]{32}-[a-zA-Z0-9_]{16}-\d{1,2}'\*/",
+        )
+
+        cursor_span_id = re.search(r"[a-zA-Z0-9_]{16}", cursor.query).group()
+        db_statement_span_id = re.search(
+            r"[a-zA-Z0-9_]{16}", span.attributes[SpanAttributes.DB_STATEMENT]
+        ).group()
+        self.assertEqual(cursor_span_id, db_statement_span_id)
+
     def test_compatible_build_version_psycopg_psycopg2_libpq(self):
         connect_module = mock.MagicMock()
         connect_module.__name__ = "test"