address comments

google/cloud/spanner_v1/_opentelemetry_tracing.py

@@ -31,7 +31,7 @@
 
 @contextmanager
 def trace_call(name, session, extra_attributes=None):
-    if not HAS_OPENTELEMETRY_INSTALLED:
+    if not HAS_OPENTELEMETRY_INSTALLED or not session:
         # empty context manager. users will have to check if the generated value is None or a span
         yield None
         return

google/cloud/spanner_v1/snapshot.py

@@ -41,10 +41,7 @@ def _restart_on_unavailable(restart, trace_name=None, session=None, attributes=N
     """
     resume_token = b""
     item_buffer = []
-    if trace_name and session:
-        with trace_call(trace_name, session, attributes):
-            iterator = restart()
-    else:
+    with trace_call(trace_name, session, attributes):
         iterator = restart()
     while True:
         try:
@@ -55,10 +52,7 @@ def _restart_on_unavailable(restart, trace_name=None, session=None, attributes=N
                     break
         except ServiceUnavailable:
             del item_buffer[:]
-            if trace_name and session:
-                with trace_call(trace_name, session, attributes):
-                    iterator = restart(resume_token=resume_token)
-            else:
+            with trace_call(trace_name, session, attributes):
                 iterator = restart(resume_token=resume_token)
             continue
 

google/cloud/spanner_v1/transaction.py

@@ -279,7 +279,7 @@ def batch_update(self, statements):
 
         trace_attributes = {
             # Get just the queries from the DML statement batch
-            "db.statement": [statement[0] for statement in statements]
+            "db.statement": [statement["sql"] for statement in parsed]
         }
         with trace_call("CloudSpanner.DMLTransaction", self._session, trace_attributes):
             response = api.execute_batch_dml(

tests/_helpers.py

@@ -6,14 +6,17 @@
     from opentelemetry.trace.status import StatusCanonicalCode
 
     from opentelemetry.sdk.trace import TracerProvider, export
-    from opentelemetry.sdk.trace.export.in_memory_span_exporter import InMemorySpanExporter
+    from opentelemetry.sdk.trace.export.in_memory_span_exporter import (
+        InMemorySpanExporter,
+    )
 
     HAS_OPENTELEMETRY_INSTALLED = True
 except ImportError:
     HAS_OPENTELEMETRY_INSTALLED = False
 
     StatusCanonicalCode = mock.Mock()
 
+
 class OpenTelemetryBase(unittest.TestCase):
     def setUp(self):
         if HAS_OPENTELEMETRY_INSTALLED:

tests/unit/test__opentelemetry_tracing.py

@@ -6,8 +6,6 @@
 try:
     from opentelemetry import trace as trace_api
     from opentelemetry.trace.status import StatusCanonicalCode
-    from opentelemetry.sdk.trace import TracerProvider, export
-    from opentelemetry.sdk.trace.export.in_memory_span_exporter import InMemorySpanExporter
 except ImportError:
     pass
 
@@ -16,6 +14,7 @@
 
 from tests._helpers import OpenTelemetryBase, HAS_OPENTELEMETRY_INSTALLED
 
+
 def _make_rpc_error(error_cls, trailing_metadata=None):
     import grpc
 
@@ -29,8 +28,10 @@ def _make_session():
 
     return mock.Mock(autospec=Session, instance=True)
 
+
 # Skip all of these tests if we don't have OpenTelemetry
 if HAS_OPENTELEMETRY_INSTALLED:
+
     class TestNoTracing(unittest.TestCase):
         def setUp(self):
             self._temp_opentelemetry = sys.modules["opentelemetry"]
@@ -46,7 +47,6 @@ def test_no_trace_call(self):
             with _opentelemetry_tracing.trace_call("Test", _make_session()) as no_span:
                 self.assertIsNone(no_span)
 
-
     class TestTracing(OpenTelemetryBase):
         def test_trace_call(self):
             extra_attributes = {
@@ -75,9 +75,7 @@ def test_trace_call(self):
             self.assertEqual(span.kind, trace_api.SpanKind.CLIENT)
             self.assertEqual(span.attributes, expected_attributes)
             self.assertEqual(span.name, "CloudSpanner.Test")
-            self.assertEqual(
-                span.status.canonical_code, trace_api.status.StatusCanonicalCode.OK
-            )
+            self.assertEqual(span.status.canonical_code, StatusCanonicalCode.OK)
 
         def test_trace_error(self):
             extra_attributes = {"db.instance": "database_name"}

tests/unit/test_session.py

@@ -15,7 +15,11 @@
 
 import google.api_core.gapic_v1.method
 import mock
-from tests._helpers import OpenTelemetryBase, StatusCanonicalCode, HAS_OPENTELEMETRY_INSTALLED
+from tests._helpers import (
+    OpenTelemetryBase,
+    StatusCanonicalCode,
+    HAS_OPENTELEMETRY_INSTALLED,
+)
 
 
 def _make_rpc_error(error_cls, trailing_metadata=None):
@@ -43,7 +47,7 @@ class TestSession(OpenTelemetryBase):
     BASE_ATTRIBUTES = {
         "db.type": "spanner",
         "db.url": "spanner.googleapis.com:443",
-        "db.instance": "projects/project-id/instances/instance-id/databases/database-id",
+        "db.instance": DATABASE_NAME,
         "net.host.name": "spanner.googleapis.com:443",
     }
 
@@ -1112,7 +1116,9 @@ def _time(_results=[1, 1.5]):
                 with mock.patch("opentelemetry.util.time", _ConstantTime()):
                     with mock.patch("time.sleep") as sleep_mock:
                         with self.assertRaises(Aborted):
-                            session.run_in_transaction(unit_of_work, "abc", timeout_secs=1)
+                            session.run_in_transaction(
+                                unit_of_work, "abc", timeout_secs=1
+                            )
             else:
                 with mock.patch("time.sleep") as sleep_mock:
                     with self.assertRaises(Aborted):

tests/unit/test_snapshot.py

@@ -15,7 +15,11 @@
 
 import google.api_core.gapic_v1.method
 import mock
-from tests._helpers import OpenTelemetryBase, StatusCanonicalCode, HAS_OPENTELEMETRY_INSTALLED
+from tests._helpers import (
+    OpenTelemetryBase,
+    StatusCanonicalCode,
+    HAS_OPENTELEMETRY_INSTALLED,
+)
 
 TABLE_NAME = "citizens"
 COLUMNS = ["email", "first_name", "last_name", "age"]