aiohttp-client: add support for url exclusions

CHANGELOG.md

@@ -11,6 +11,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added 
+
+- `opentelemetry-instrumentation-aiohttp-client`: add support for url exclusions via `OTEL_PYTHON_EXCLUDED_URLS` / `OTEL_PYTHON_HTTPX_EXCLUDED_URLS`
+  ([#3850](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/3850))
+
 ## Version 1.38.0/0.59b0 (2025-10-16)
 
 ### Fixed

instrumentation/opentelemetry-instrumentation-aiohttp-client/src/opentelemetry/instrumentation/aiohttp_client/__init__.py

@@ -84,6 +84,20 @@ def response_hook(span: Span, params: typing.Union[
 
    AioHttpClientInstrumentor().instrument(request_hook=request_hook, response_hook=response_hook)
 
+Exclude lists
+*************
+To exclude certain URLs from tracking, set the environment variable ``OTEL_PYTHON_AIOHTTP_CLIENT_EXCLUDED_URLS``
+(or ``OTEL_PYTHON_EXCLUDED_URLS`` to cover all instrumentations) to a string of comma delimited regexes that match the
+URLs.
+
+For example,
+
+::
+
+    export OTEL_PYTHON_AIOHTTP_CLIENT_EXCLUDED_URLS="client/.*/info,healthcheck"
+
+will exclude requests such as ``https://site/client/123/info`` and ``https://site/xyz/healthcheck``.
+
 API
 ---
 """
@@ -135,7 +149,11 @@ def response_hook(span: Span, params: typing.Union[
 )
 from opentelemetry.trace import Span, SpanKind, TracerProvider, get_tracer
 from opentelemetry.trace.status import Status, StatusCode
-from opentelemetry.util.http import redact_url, sanitize_method
+from opentelemetry.util.http import (
+    get_excluded_urls,
+    redact_url,
+    sanitize_method,
+)
 
 _UrlFilterT = typing.Optional[typing.Callable[[yarl.URL], str]]
 _RequestHookT = typing.Optional[
@@ -271,6 +289,8 @@ def create_trace_config(
 
     metric_attributes = {}
 
+    excluded_urls = get_excluded_urls("AIOHTTP_CLIENT")
+
     def _end_trace(trace_config_ctx: types.SimpleNamespace):
         elapsed_time = max(default_timer() - trace_config_ctx.start_time, 0)
         if trace_config_ctx.token:
@@ -304,7 +324,10 @@ async def on_request_start(
         trace_config_ctx: types.SimpleNamespace,
         params: aiohttp.TraceRequestStartParams,
     ):
-        if not is_instrumentation_enabled():
+        if (
+            not is_instrumentation_enabled()
+            or trace_config_ctx.excluded_urls.url_disabled(str(params.url))
+        ):
             trace_config_ctx.span = None
             return
 
@@ -426,6 +449,7 @@ def _trace_config_ctx_factory(**kwargs):
             start_time=start_time,
             duration_histogram_old=duration_histogram_old,
             duration_histogram_new=duration_histogram_new,
+            excluded_urls=excluded_urls,
             **kwargs,
         )
 

instrumentation/opentelemetry-instrumentation-aiohttp-client/tests/test_aiohttp_client_integration.py

@@ -16,6 +16,7 @@
 
 import asyncio
 import contextlib
+import os
 import typing
 import unittest
 import urllib.parse
@@ -87,6 +88,7 @@ async def do_request():
     return loop.run_until_complete(do_request())
 
 
+# pylint: disable=too-many-public-methods
 class TestAioHttpIntegration(TestBase):
     _test_status_codes = (
         (HTTPStatus.OK, StatusCode.UNSET),
@@ -332,7 +334,7 @@ def test_schema_url(self):
 
             span = self.memory_exporter.get_finished_spans()[0]
             self.assertEqual(
-                span.instrumentation_info.schema_url,
+                span.instrumentation_scope.schema_url,
                 "https://opentelemetry.io/schemas/1.11.0",
             )
             self.memory_exporter.clear()
@@ -349,7 +351,7 @@ def test_schema_url_new_semconv(self):
 
             span = self.memory_exporter.get_finished_spans()[0]
             self.assertEqual(
-                span.instrumentation_info.schema_url,
+                span.instrumentation_scope.schema_url,
                 "https://opentelemetry.io/schemas/1.21.0",
             )
             self.memory_exporter.clear()
@@ -366,7 +368,7 @@ def test_schema_url_both_semconv(self):
 
             span = self.memory_exporter.get_finished_spans()[0]
             self.assertEqual(
-                span.instrumentation_info.schema_url,
+                span.instrumentation_scope.schema_url,
                 "https://opentelemetry.io/schemas/1.21.0",
             )
             self.memory_exporter.clear()
@@ -803,6 +805,24 @@ async def do_request(url):
         )
         self.memory_exporter.clear()
 
+    @mock.patch.dict(
+        os.environ, {"OTEL_PYTHON_AIOHTTP_CLIENT_EXCLUDED_URLS": "/some/path"}
+    )
+    def test_ignores_excluded_urls(self):
+        async def request_handler(request):
+            assert "traceparent" not in request.headers
+            return aiohttp.web.Response(status=HTTPStatus.OK)
+
+        self._http_request(
+            trace_config=aiohttp_client.create_trace_config(),
+            request_handler=request_handler,
+            url="/some/path?query=param&other=param2",
+            status_code=HTTPStatus.OK,
+        )
+
+        self._assert_spans([], 0)
+        self._assert_metrics(0)
+
 
 class TestAioHttpClientInstrumentor(TestBase):
     URL = "/test-path"
@@ -1115,6 +1135,21 @@ def response_hook(
         self.assertIn("response_hook_attr", span.attributes)
         self.assertEqual(span.attributes["response_hook_attr"], "value")
 
+    @mock.patch.dict(
+        os.environ, {"OTEL_PYTHON_AIOHTTP_CLIENT_EXCLUDED_URLS": "/test-path"}
+    )
+    def test_ignores_excluded_urls(self):
+        # need the env var set at instrument time
+        AioHttpClientInstrumentor().uninstrument()
+        AioHttpClientInstrumentor().instrument()
+
+        url = "/test-path?query=params"
+        run_with_test_server(
+            self.get_default_request(url), url, self.default_handler
+        )
+        self._assert_spans(0)
+        self._assert_metrics(0)
+
 
 class TestLoadingAioHttpInstrumentor(unittest.TestCase):
     def test_loading_instrumentor(self):