feat: add header extraction parameters to FastAPIInstrumentor().instrument_app (open-telemetry#2241)

* add header parameters to FastAPIInstrumentor().instrument_app

* add changelog

* move open-telemetry#2072 changelog to unreleased

* remove accidental pprint

* linting

* future annotations for fastapi

* same logic for instrument()

* Fix lint

* Fix test case

---------

Co-authored-by: Diego Hurtado <ocelotl@users.noreply.github.com>

Author: 2 people

CHANGELOG.md

@@ -216,6 +216,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#2367](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2367))
 
 
+### Added
+- `opentelemetry-instrumentation-fastapi` Add support for configuring header extraction via runtime constructor parameters
+  ([#2241](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2241))
+
 ## Version 1.23.0/0.44b0 (2024-02-23)
 
 - Drop support for 3.7
@@ -236,6 +240,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 - `opentelemetry-instrumentation-psycopg` Initial release for psycopg 3.x
+- `opentelemetry-instrumentation-asgi` Add support for configuring ASGI middleware header extraction via runtime constructor parameters
+  ([#2026](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2026))
 
 ## Version 1.22.0/0.43b0 (2023-12-14)
 
@@ -275,8 +281,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#1948](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1948))
 - Added schema_url (`"https://opentelemetry.io/schemas/1.11.0"`) to all metrics and traces
   ([#1977](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1977))
-- Add support for configuring ASGI middleware header extraction via runtime constructor parameters
-  ([#2026](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/2026))
 
 ### Fixed
 

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

@@ -86,9 +86,10 @@ def client_response_hook(span: Span, scope: dict[str, Any], message: dict[str, A
 Request headers
 ***************
 To capture HTTP request headers as span attributes, set the environment variable
-``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST`` to a comma delimited list of HTTP header names.
+``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST`` to a comma delimited list of HTTP header names,
+or pass the ``http_capture_headers_server_request`` keyword argument to the ``instrument_app`` method.
 
-For example,
+For example using the environment variable,
 ::
 
     export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST="content-type,custom_request_header"
@@ -120,9 +121,10 @@ def client_response_hook(span: Span, scope: dict[str, Any], message: dict[str, A
 Response headers
 ****************
 To capture HTTP response headers as span attributes, set the environment variable
-``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE`` to a comma delimited list of HTTP header names.
+``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE`` to a comma delimited list of HTTP header names,
+or pass the ``http_capture_headers_server_response`` keyword argument to the ``instrument_app`` method.
 
-For example,
+For example using the environment variable,
 ::
 
     export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE="content-type,custom_response_header"
@@ -155,10 +157,12 @@ def client_response_hook(span: Span, scope: dict[str, Any], message: dict[str, A
 ******************
 In order to prevent storing sensitive data such as personally identifiable information (PII), session keys, passwords,
 etc, set the environment variable ``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SANITIZE_FIELDS``
-to a comma delimited list of HTTP header names to be sanitized.  Regexes may be used, and all header names will be
-matched in a case-insensitive manner.
+to a comma delimited list of HTTP header names to be sanitized, or pass the ``http_capture_headers_sanitize_fields``
+keyword argument to the ``instrument_app`` method.
 
-For example,
+Regexes may be used, and all header names will be matched in a case-insensitive manner.
+
+For example using the environment variable,
 ::
 
     export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SANITIZE_FIELDS=".*session.*,set-cookie"
@@ -171,6 +175,9 @@ def client_response_hook(span: Span, scope: dict[str, Any], message: dict[str, A
 API
 ---
 """
+
+from __future__ import annotations
+
 import logging
 from importlib.metadata import PackageNotFoundError, distribution
 from typing import Collection
@@ -227,6 +234,9 @@ def instrument_app(
         tracer_provider=None,
         meter_provider=None,
         excluded_urls=None,
+        http_capture_headers_server_request: list[str] | None = None,
+        http_capture_headers_server_response: list[str] | None = None,
+        http_capture_headers_sanitize_fields: list[str] | None = None,
     ):
         """Instrument an uninstrumented FastAPI application."""
         if not hasattr(app, "_is_instrumented_by_opentelemetry"):
@@ -265,6 +275,9 @@ def instrument_app(
                 # Pass in tracer/meter to get __name__and __version__ of fastapi instrumentation
                 tracer=tracer,
                 meter=meter,
+                http_capture_headers_server_request=http_capture_headers_server_request,
+                http_capture_headers_server_response=http_capture_headers_server_response,
+                http_capture_headers_sanitize_fields=http_capture_headers_sanitize_fields,
             )
             app._is_instrumented_by_opentelemetry = True
             if app not in _InstrumentedFastAPI._instrumented_fastapi_apps:
@@ -314,6 +327,15 @@ def _instrument(self, **kwargs):
         _InstrumentedFastAPI._client_response_hook = kwargs.get(
             "client_response_hook"
         )
+        _InstrumentedFastAPI._http_capture_headers_server_request = kwargs.get(
+            "http_capture_headers_server_request"
+        )
+        _InstrumentedFastAPI._http_capture_headers_server_response = (
+            kwargs.get("http_capture_headers_server_response")
+        )
+        _InstrumentedFastAPI._http_capture_headers_sanitize_fields = (
+            kwargs.get("http_capture_headers_sanitize_fields")
+        )
         _excluded_urls = kwargs.get("excluded_urls")
         _InstrumentedFastAPI._excluded_urls = (
             _excluded_urls_from_env
@@ -368,6 +390,9 @@ def __init__(self, *args, **kwargs):
             # Pass in tracer/meter to get __name__and __version__ of fastapi instrumentation
             tracer=tracer,
             meter=meter,
+            http_capture_headers_server_request=_InstrumentedFastAPI._http_capture_headers_server_request,
+            http_capture_headers_server_response=_InstrumentedFastAPI._http_capture_headers_server_response,
+            http_capture_headers_sanitize_fields=_InstrumentedFastAPI._http_capture_headers_sanitize_fields,
         )
         self._is_instrumented_by_opentelemetry = True
         _InstrumentedFastAPI._instrumented_fastapi_apps.add(self)