OpenTelemetry HTTPX Instrumentation
|pypi|
.. |pypi| image:: https://badge.fury.io/py/opentelemetry-instrumentation-httpx.svg :target: https://pypi.org/project/opentelemetry-instrumentation-httpx/
This library allows tracing HTTP requests made by the
httpx <https://www.python-httpx.org/>
_ library.
::
pip install opentelemetry-instrumentation-httpx
Instrumenting all clients
When using the instrumentor, all clients will automatically trace requests.
.. code-block:: python
import httpx
from opentelemetry.instrumentation.httpx import HTTPXClientInstrumentor
url = "https://some.url/get"
HTTPXClientInstrumentor().instrument()
with httpx.Client() as client:
response = client.get(url)
async with httpx.AsyncClient() as client:
response = await client.get(url)
Instrumenting single clients
If you only want to instrument requests for specific client instances, you can
use the instrument_client
method.
.. code-block:: python
import httpx
from opentelemetry.instrumentation.httpx import HTTPXClientInstrumentor
url = "https://some.url/get"
with httpx.Client(transport=telemetry_transport) as client:
HTTPXClientInstrumentor.instrument_client(client)
response = client.get(url)
async with httpx.AsyncClient(transport=telemetry_transport) as client:
HTTPXClientInstrumentor.instrument_client(client)
response = await client.get(url)
Uninstrument
If you need to uninstrument clients, there are two options available.
.. code-block:: python
import httpx
from opentelemetry.instrumentation.httpx import HTTPXClientInstrumentor
HTTPXClientInstrumentor().instrument()
client = httpx.Client()
# Uninstrument a specific client
HTTPXClientInstrumentor.uninstrument_client(client)
# Uninstrument all clients
HTTPXClientInstrumentor().uninstrument()
Using transports directly
If you don't want to use the instrumentor class, you can use the transport classes directly.
.. code-block:: python
import httpx
from opentelemetry.instrumentation.httpx import (
AsyncOpenTelemetryTransport,
SyncOpenTelemetryTransport,
)
url = "https://some.url/get"
transport = httpx.HTTPTransport()
telemetry_transport = SyncOpenTelemetryTransport(transport)
with httpx.Client(transport=telemetry_transport) as client:
response = client.get(url)
transport = httpx.AsyncHTTPTransport()
telemetry_transport = AsyncOpenTelemetryTransport(transport)
async with httpx.AsyncClient(transport=telemetry_transport) as client:
response = await client.get(url)
Request and response hooks
The instrumentation supports specifying request and response hooks. These are functions that get called back by the instrumentation right after a span is created for a request and right before the span is finished while processing a response.
.. note::
The request hook receives the raw arguments provided to the transport layer. The response hook receives the raw return values from the transport layer.
The hooks can be configured as follows:
.. code-block:: python
from opentelemetry.instrumentation.httpx import HTTPXClientInstrumentor
def request_hook(span, request):
# method, url, headers, stream, extensions = request
pass
def response_hook(span, request, response):
# method, url, headers, stream, extensions = request
# status_code, headers, stream, extensions = response
pass
async def async_request_hook(span, request):
# method, url, headers, stream, extensions = request
pass
async def async_response_hook(span, request, response):
# method, url, headers, stream, extensions = request
# status_code, headers, stream, extensions = response
pass
HTTPXClientInstrumentor().instrument(
request_hook=request_hook,
response_hook=response_hook,
async_request_hook=async_request_hook,
async_response_hook=async_response_hook
)
Or if you are using the transport classes directly:
.. code-block:: python
from opentelemetry.instrumentation.httpx import SyncOpenTelemetryTransport, AsyncOpenTelemetryTransport
def request_hook(span, request):
# method, url, headers, stream, extensions = request
pass
def response_hook(span, request, response):
# method, url, headers, stream, extensions = request
# status_code, headers, stream, extensions = response
pass
async def async_request_hook(span, request):
# method, url, headers, stream, extensions = request
pass
async def async_response_hook(span, request, response):
# method, url, headers, stream, extensions = request
# status_code, headers, stream, extensions = response
pass
transport = httpx.HTTPTransport()
telemetry_transport = SyncOpenTelemetryTransport(
transport,
request_hook=request_hook,
response_hook=response_hook
)
async_transport = httpx.AsyncHTTPTransport()
async_telemetry_transport = AsyncOpenTelemetryTransport(
async_transport,
request_hook=async_request_hook,
response_hook=async_response_hook
)
OpenTelemetry HTTPX Instrumentation <https://opentelemetry-python-contrib.readthedocs.io/en/latest/instrumentation/httpx/httpx.html>
_OpenTelemetry Project <https://opentelemetry.io/>
_