mirror of
https://github.com/open-telemetry/opentelemetry-python-contrib.git
synced 2025-07-29 05:04:05 +08:00
Add support for regular expression matching and sanitizing of headers in FastAPI. (#1403)
This commit is contained in:
Dan Rogers
@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
|
||||
|
||||
- `opentelemetry-instrumentation-pymysql` Add tests for commit() and rollback().
|
||||
([#1424](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1424))
|
||||
- `opentelemetry-instrumentation-fastapi` Add support for regular expression matching and sanitization of HTTP headers.
|
||||
([#1403](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1403))
|
||||
|
||||
### Fixed
|
||||
|
||||
|
||||
@ -34,8 +34,9 @@ Configuration
|
||||
|
||||
Exclude lists
|
||||
*************
|
||||
To exclude certain URLs from being tracked, set the environment variable ``OTEL_PYTHON_FASTAPI_EXCLUDED_URLS``
|
||||
(or ``OTEL_PYTHON_EXCLUDED_URLS`` as fallback) with comma delimited regexes representing which URLs to exclude.
|
||||
To exclude certain URLs from tracking, set the environment variable ``OTEL_PYTHON_FASTAPI_EXCLUDED_URLS``
|
||||
(or ``OTEL_PYTHON_EXCLUDED_URLS`` to cover all instrumentations) to a string of comma delimited regexes that match the
|
||||
URLs.
|
||||
|
||||
For example,
|
||||
|
||||
@ -45,7 +46,7 @@ For example,
|
||||
|
||||
will exclude requests such as ``https://site/client/123/info`` and ``https://site/xyz/healthcheck``.
|
||||
|
||||
You can also pass the comma delimited regexes to the ``instrument_app`` method directly:
|
||||
You can also pass comma delimited regexes directly to the ``instrument_app`` method:
|
||||
|
||||
.. code-block:: python
|
||||
|
||||
@ -54,9 +55,12 @@ You can also pass the comma delimited regexes to the ``instrument_app`` method d
|
||||
Request/Response hooks
|
||||
**********************
|
||||
|
||||
Utilize request/response hooks to execute custom logic to be performed before/after performing a request. The server request hook takes in a server span and ASGI
|
||||
scope object for every incoming request. The client request hook is called with the internal span and an ASGI scope which is sent as a dictionary for when the method receive is called.
|
||||
The client response hook is called with the internal span and an ASGI event which is sent as a dictionary for when the method send is called.
|
||||
This instrumentation supports request and response hooks. These are functions that get called
|
||||
right after a span is created for a request and right before the span is finished for the response.
|
||||
|
||||
- The server request hook is passed a server span and ASGI scope object for every incoming request.
|
||||
- The client request hook is called with the internal span and an ASGI scope when the method ``receive`` is called.
|
||||
- The client response hook is called with the internal span and an ASGI event when the method ``send`` is called.
|
||||
|
||||
.. code-block:: python
|
||||
|
||||
@ -76,54 +80,93 @@ The client response hook is called with the internal span and an ASGI event whic
|
||||
|
||||
Capture HTTP request and response headers
|
||||
*****************************************
|
||||
You can configure the agent to capture predefined HTTP headers as span attributes, according to the `semantic convention <https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/semantic_conventions/http.md#http-request-and-response-headers>`_.
|
||||
You can configure the agent to capture specified HTTP headers as span attributes, according to the
|
||||
`semantic convention <https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/semantic_conventions/http.md#http-request-and-response-headers>`_.
|
||||
|
||||
Request headers
|
||||
***************
|
||||
To capture predefined HTTP request headers as span attributes, set the environment variable ``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST``
|
||||
to a comma-separated list of HTTP header names.
|
||||
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.
|
||||
|
||||
For example,
|
||||
|
||||
::
|
||||
|
||||
export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST="content-type,custom_request_header"
|
||||
|
||||
will extract ``content-type`` and ``custom_request_header`` from request headers and add them as span attributes.
|
||||
will extract ``content-type`` and ``custom_request_header`` from the request headers and add them as span attributes.
|
||||
|
||||
It is recommended that you should give the correct names of the headers to be captured in the environment variable.
|
||||
Request header names in fastapi are case insensitive. So, giving header name as ``CUStom-Header`` in environment variable will be able capture header with name ``custom-header``.
|
||||
Request header names in FastAPI are case-insensitive. So, giving the header name as ``CUStom-Header`` in the environment
|
||||
variable will capture the header named ``custom-header``.
|
||||
|
||||
The name of the added span attribute will follow the format ``http.request.header.<header_name>`` where ``<header_name>`` being the normalized HTTP header name (lowercase, with - characters replaced by _ ).
|
||||
The value of the attribute will be single item list containing all the header values.
|
||||
Regular expressions may also be used to match multiple headers that correspond to the given pattern. For example:
|
||||
::
|
||||
|
||||
Example of the added span attribute,
|
||||
export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST="Accept.*,X-.*"
|
||||
|
||||
Would match all request headers that start with ``Accept`` and ``X-``.
|
||||
|
||||
To capture all request headers, set ``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST`` to ``".*"``.
|
||||
::
|
||||
|
||||
export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST=".*"
|
||||
|
||||
The name of the added span attribute will follow the format ``http.request.header.<header_name>`` where ``<header_name>``
|
||||
is the normalized HTTP header name (lowercase, with ``-`` replaced by ``_``). The value of the attribute will be a
|
||||
single item list containing all the header values.
|
||||
|
||||
For example:
|
||||
``http.request.header.custom_request_header = ["<value1>,<value2>"]``
|
||||
|
||||
Response headers
|
||||
****************
|
||||
To capture predefined HTTP response headers as span attributes, set the environment variable ``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE``
|
||||
to a comma-separated list of HTTP header names.
|
||||
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.
|
||||
|
||||
For example,
|
||||
|
||||
::
|
||||
|
||||
export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE="content-type,custom_response_header"
|
||||
|
||||
will extract ``content-type`` and ``custom_response_header`` from response headers and add them as span attributes.
|
||||
will extract ``content-type`` and ``custom_response_header`` from the response headers and add them as span attributes.
|
||||
|
||||
It is recommended that you should give the correct names of the headers to be captured in the environment variable.
|
||||
Response header names captured in fastapi are case insensitive. So, giving header name as ``CUStomHeader`` in environment variable will be able capture header with name ``customheader``.
|
||||
Response header names in FastAPI are case-insensitive. So, giving the header name as ``CUStom-Header`` in the environment
|
||||
variable will capture the header named ``custom-header``.
|
||||
|
||||
The name of the added span attribute will follow the format ``http.response.header.<header_name>`` where ``<header_name>`` being the normalized HTTP header name (lowercase, with - characters replaced by _ ).
|
||||
The value of the attribute will be single item list containing all the header values.
|
||||
Regular expressions may also be used to match multiple headers that correspond to the given pattern. For example:
|
||||
::
|
||||
|
||||
Example of the added span attribute,
|
||||
export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE="Content.*,X-.*"
|
||||
|
||||
Would match all response headers that start with ``Content`` and ``X-``.
|
||||
|
||||
To capture all response headers, set ``OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE`` to ``".*"``.
|
||||
::
|
||||
|
||||
export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE=".*"
|
||||
|
||||
The name of the added span attribute will follow the format ``http.response.header.<header_name>`` where ``<header_name>``
|
||||
is the normalized HTTP header name (lowercase, with ``-`` replaced by ``_``). The value of the attribute will be a
|
||||
single item list containing all the header values.
|
||||
|
||||
For example:
|
||||
``http.response.header.custom_response_header = ["<value1>,<value2>"]``
|
||||
|
||||
Sanitizing headers
|
||||
******************
|
||||
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.
|
||||
|
||||
For example,
|
||||
::
|
||||
|
||||
export OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SANITIZE_FIELDS=".*session.*,set-cookie"
|
||||
|
||||
will replace the value of headers such as ``session-id`` and ``set-cookie`` with ``[REDACTED]`` in the span.
|
||||
|
||||
Note:
|
||||
Environment variable names to capture http headers are still experimental, and thus are subject to change.
|
||||
The environment variable names used to capture HTTP headers are still experimental, and thus are subject to change.
|
||||
|
||||
API
|
||||
---
|
||||
|
||||
@ -32,6 +32,7 @@ from opentelemetry.semconv.trace import SpanAttributes
|
||||
from opentelemetry.test.globals_test import reset_trace_globals
|
||||
from opentelemetry.test.test_base import TestBase
|
||||
from opentelemetry.util.http import (
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SANITIZE_FIELDS,
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST,
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE,
|
||||
_active_requests_count_attrs,
|
||||
@ -529,24 +530,23 @@ class TestWrappedApplication(TestBase):
|
||||
)
|
||||
|
||||
|
||||
@patch.dict(
|
||||
"os.environ",
|
||||
{
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SANITIZE_FIELDS: ".*my-secret.*",
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3,Regex-Test-Header-.*,Regex-Invalid-Test-Header-.*,.*my-secret.*",
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3,my-custom-regex-header-.*,invalid-regex-header-.*,.*my-secret.*",
|
||||
},
|
||||
)
|
||||
class TestHTTPAppWithCustomHeaders(TestBase):
|
||||
def setUp(self):
|
||||
super().setUp()
|
||||
self.env_patch = patch.dict(
|
||||
"os.environ",
|
||||
{
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3",
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3",
|
||||
},
|
||||
)
|
||||
self.env_patch.start()
|
||||
self.app = self._create_app()
|
||||
otel_fastapi.FastAPIInstrumentor().instrument_app(self.app)
|
||||
self.client = TestClient(self.app)
|
||||
|
||||
def tearDown(self) -> None:
|
||||
super().tearDown()
|
||||
self.env_patch.stop()
|
||||
with self.disable_logging():
|
||||
otel_fastapi.FastAPIInstrumentor().uninstrument_app(self.app)
|
||||
|
||||
@ -559,6 +559,9 @@ class TestHTTPAppWithCustomHeaders(TestBase):
|
||||
headers = {
|
||||
"custom-test-header-1": "test-header-value-1",
|
||||
"custom-test-header-2": "test-header-value-2",
|
||||
"my-custom-regex-header-1": "my-custom-regex-value-1,my-custom-regex-value-2",
|
||||
"My-Custom-Regex-Header-2": "my-custom-regex-value-3,my-custom-regex-value-4",
|
||||
"My-Secret-Header": "My Secret Value",
|
||||
}
|
||||
content = {"message": "hello world"}
|
||||
return JSONResponse(content=content, headers=headers)
|
||||
@ -573,12 +576,20 @@ class TestHTTPAppWithCustomHeaders(TestBase):
|
||||
"http.request.header.custom_test_header_2": (
|
||||
"test-header-value-2",
|
||||
),
|
||||
"http.request.header.regex_test_header_1": ("Regex Test Value 1",),
|
||||
"http.request.header.regex_test_header_2": (
|
||||
"RegexTestValue2,RegexTestValue3",
|
||||
),
|
||||
"http.request.header.my_secret_header": ("[REDACTED]",),
|
||||
}
|
||||
resp = self.client.get(
|
||||
"/foobar",
|
||||
headers={
|
||||
"custom-test-header-1": "test-header-value-1",
|
||||
"custom-test-header-2": "test-header-value-2",
|
||||
"Regex-Test-Header-1": "Regex Test Value 1",
|
||||
"regex-test-header-2": "RegexTestValue2,RegexTestValue3",
|
||||
"My-Secret-Header": "My Secret Value",
|
||||
},
|
||||
)
|
||||
self.assertEqual(200, resp.status_code)
|
||||
@ -602,6 +613,9 @@ class TestHTTPAppWithCustomHeaders(TestBase):
|
||||
headers={
|
||||
"custom-test-header-1": "test-header-value-1",
|
||||
"custom-test-header-2": "test-header-value-2",
|
||||
"Regex-Test-Header-1": "Regex Test Value 1",
|
||||
"regex-test-header-2": "RegexTestValue2,RegexTestValue3",
|
||||
"My-Secret-Header": "My Secret Value",
|
||||
},
|
||||
)
|
||||
self.assertEqual(200, resp.status_code)
|
||||
@ -623,6 +637,13 @@ class TestHTTPAppWithCustomHeaders(TestBase):
|
||||
"http.response.header.custom_test_header_2": (
|
||||
"test-header-value-2",
|
||||
),
|
||||
"http.response.header.my_custom_regex_header_1": (
|
||||
"my-custom-regex-value-1,my-custom-regex-value-2",
|
||||
),
|
||||
"http.response.header.my_custom_regex_header_2": (
|
||||
"my-custom-regex-value-3,my-custom-regex-value-4",
|
||||
),
|
||||
"http.response.header.my_secret_header": ("[REDACTED]",),
|
||||
}
|
||||
resp = self.client.get("/foobar")
|
||||
self.assertEqual(200, resp.status_code)
|
||||
@ -653,24 +674,23 @@ class TestHTTPAppWithCustomHeaders(TestBase):
|
||||
self.assertNotIn(key, server_span.attributes)
|
||||
|
||||
|
||||
@patch.dict(
|
||||
"os.environ",
|
||||
{
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SANITIZE_FIELDS: ".*my-secret.*",
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3,Regex-Test-Header-.*,Regex-Invalid-Test-Header-.*,.*my-secret.*",
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3,my-custom-regex-header-.*,invalid-regex-header-.*,.*my-secret.*",
|
||||
},
|
||||
)
|
||||
class TestWebSocketAppWithCustomHeaders(TestBase):
|
||||
def setUp(self):
|
||||
super().setUp()
|
||||
self.env_patch = patch.dict(
|
||||
"os.environ",
|
||||
{
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3",
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_RESPONSE: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3",
|
||||
},
|
||||
)
|
||||
self.env_patch.start()
|
||||
self.app = self._create_app()
|
||||
otel_fastapi.FastAPIInstrumentor().instrument_app(self.app)
|
||||
self.client = TestClient(self.app)
|
||||
|
||||
def tearDown(self) -> None:
|
||||
super().tearDown()
|
||||
self.env_patch.stop()
|
||||
with self.disable_logging():
|
||||
otel_fastapi.FastAPIInstrumentor().uninstrument_app(self.app)
|
||||
|
||||
@ -688,6 +708,12 @@ class TestWebSocketAppWithCustomHeaders(TestBase):
|
||||
"headers": [
|
||||
(b"custom-test-header-1", b"test-header-value-1"),
|
||||
(b"custom-test-header-2", b"test-header-value-2"),
|
||||
(b"Regex-Test-Header-1", b"Regex Test Value 1"),
|
||||
(
|
||||
b"regex-test-header-2",
|
||||
b"RegexTestValue2,RegexTestValue3",
|
||||
),
|
||||
(b"My-Secret-Header", b"My Secret Value"),
|
||||
],
|
||||
}
|
||||
)
|
||||
@ -727,6 +753,13 @@ class TestWebSocketAppWithCustomHeaders(TestBase):
|
||||
|
||||
self.assertSpanHasAttributes(server_span, expected)
|
||||
|
||||
@patch.dict(
|
||||
"os.environ",
|
||||
{
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SANITIZE_FIELDS: ".*my-secret.*",
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3,Regex-Test-Header-.*,Regex-Invalid-Test-Header-.*,.*my-secret.*",
|
||||
},
|
||||
)
|
||||
def test_web_socket_custom_request_headers_not_in_span_attributes(self):
|
||||
not_expected = {
|
||||
"http.request.header.custom_test_header_3": (
|
||||
@ -799,16 +832,15 @@ class TestWebSocketAppWithCustomHeaders(TestBase):
|
||||
self.assertNotIn(key, server_span.attributes)
|
||||
|
||||
|
||||
@patch.dict(
|
||||
"os.environ",
|
||||
{
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3",
|
||||
},
|
||||
)
|
||||
class TestNonRecordingSpanWithCustomHeaders(TestBase):
|
||||
def setUp(self):
|
||||
super().setUp()
|
||||
self.env_patch = patch.dict(
|
||||
"os.environ",
|
||||
{
|
||||
OTEL_INSTRUMENTATION_HTTP_CAPTURE_HEADERS_SERVER_REQUEST: "Custom-Test-Header-1,Custom-Test-Header-2,Custom-Test-Header-3",
|
||||
},
|
||||
)
|
||||
self.env_patch.start()
|
||||
self.app = fastapi.FastAPI()
|
||||
|
||||
@self.app.get("/foobar")
|
||||
|
||||
Reference in New Issue
Block a user