Sanitize DB_STATEMENT by default for elasticsearch (#1758)

Author: nemoshlag

Diff for: CHANGELOG.md

@@ -20,6 +20,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fix elasticsearch db.statement attribute to be sanitized by default
+  ([#1758](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1758))
 - Fix `AttributeError` when AWS Lambda handler receives a list event
   ([#1738](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1738))
 - Fix `None does not implement middleware` error when there are no middlewares registered

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

@@ -44,7 +44,6 @@
 
 The instrument() method accepts the following keyword args:
 tracer_provider (TracerProvider) - an optional tracer provider
-sanitize_query (bool) - an optional query sanitization flag
 request_hook (Callable) - a function with extra user-defined logic to be performed before performing the request
 this function signature is:
 def request_hook(span: Span, method: str, url: str, kwargs)
@@ -138,13 +137,11 @@ def _instrument(self, **kwargs):
         tracer = get_tracer(__name__, __version__, tracer_provider)
         request_hook = kwargs.get("request_hook")
         response_hook = kwargs.get("response_hook")
-        sanitize_query = kwargs.get("sanitize_query", False)
         _wrap(
             elasticsearch,
             "Transport.perform_request",
             _wrap_perform_request(
                 tracer,
-                sanitize_query,
                 self._span_name_prefix,
                 request_hook,
                 response_hook,
@@ -163,7 +160,6 @@ def _uninstrument(self, **kwargs):
 
 def _wrap_perform_request(
     tracer,
-    sanitize_query,
     span_name_prefix,
     request_hook=None,
     response_hook=None,
@@ -225,10 +221,9 @@ def wrapper(wrapped, _, args, kwargs):
                 if method:
                     attributes["elasticsearch.method"] = method
                 if body:
-                    statement = str(body)
-                    if sanitize_query:
-                        statement = sanitize_body(body)
-                    attributes[SpanAttributes.DB_STATEMENT] = statement
+                    attributes[SpanAttributes.DB_STATEMENT] = sanitize_body(
+                        body
+                    )
                 if params:
                     attributes["elasticsearch.params"] = str(params)
                 if doc_id:

Diff for: instrumentation/opentelemetry-instrumentation-elasticsearch/src/opentelemetry/instrumentation/elasticsearch/utils.py

@@ -29,7 +29,8 @@ def _flatten_dict(d, parent_key=""):
     items = []
     for k, v in d.items():
         new_key = parent_key + "." + k if parent_key else k
-        if isinstance(v, dict):
+        # recursive call _flatten_dict for a non-empty dict value
+        if isinstance(v, dict) and v:
             items.extend(_flatten_dict(v, new_key).items())
         else:
             items.append((new_key, v))

Diff for: instrumentation/opentelemetry-instrumentation-elasticsearch/tests/test_elasticsearch.py

@@ -58,9 +58,7 @@ class TestElasticsearchIntegration(TestBase):
         "elasticsearch.url": "/test-index/_search",
         "elasticsearch.method": helpers.dsl_search_method,
         "elasticsearch.target": "test-index",
-        SpanAttributes.DB_STATEMENT: str(
-            {"query": {"bool": {"filter": [{"term": {"author": "testing"}}]}}}
-        ),
+        SpanAttributes.DB_STATEMENT: str({"query": {"bool": {"filter": "?"}}}),
     }
 
     create_attributes = {
@@ -264,18 +262,6 @@ def test_dsl_search(self, request_mock):
         )
 
     def test_dsl_search_sanitized(self, request_mock):
-        # Reset instrumentation to use sanitized query (default)
-        ElasticsearchInstrumentor().uninstrument()
-        ElasticsearchInstrumentor().instrument(sanitize_query=True)
-
-        # update expected attributes to match sanitized query
-        sanitized_search_attributes = self.search_attributes.copy()
-        sanitized_search_attributes.update(
-            {
-                SpanAttributes.DB_STATEMENT: "{'query': {'bool': {'filter': '?'}}}"
-            }
-        )
-
         request_mock.return_value = (1, {}, '{"hits": {"hits": []}}')
         client = Elasticsearch()
         search = Search(using=client, index="test-index").filter(
@@ -289,7 +275,7 @@ def test_dsl_search_sanitized(self, request_mock):
         self.assertIsNotNone(span.end_time)
         self.assertEqual(
             span.attributes,
-            sanitized_search_attributes,
+            self.search_attributes,
         )
 
     def test_dsl_create(self, request_mock):
@@ -320,9 +306,6 @@ def test_dsl_create(self, request_mock):
         )
 
     def test_dsl_create_sanitized(self, request_mock):
-        # Reset instrumentation to explicitly use sanitized query
-        ElasticsearchInstrumentor().uninstrument()
-        ElasticsearchInstrumentor().instrument(sanitize_query=True)
         request_mock.return_value = (1, {}, {})
         client = Elasticsearch()
         Article.init(using=client)