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opentelemetry-python-contrib/instrumentation/opentelemetry-instrumentation-urllib
Andrea Galbusera 54cbf59aae Update package metadata adding "Repository" to project urls (#3119)
Add "Repository" label to project urls pointing to the
opentelemetry-python repo root url.

Having within project urls one entry with the same value for all
packages released by the project will help tools for automatic
dependency management to suggest coherent upgrades for related packages.
2024-12-19 10:15:58 +00:00
..

OpenTelemetry urllib Instrumentation
====================================

|pypi|

.. |pypi| image:: https://badge.fury.io/py/opentelemetry-instrumentation-urllib.svg
   :target: https://pypi.org/project/opentelemetry-instrumentation-urllib/

This library allows tracing HTTP requests made by the
`urllib <https://docs.python.org/3/library/urllib.html>`_ library.

Installation
------------

::

     pip install opentelemetry-instrumentation-urllib

Configuration
-------------

Request/Response hooks
**********************

The urllib instrumentation supports extending tracing behavior with the help of
request and response hooks. These are functions that are called back by the instrumentation
right after a Span is created for a request and right before the span is finished processing a response respectively.
The hooks can be configured as follows:

.. code:: python

    from opentelemetry.instrumentation.urllib import URLLibInstrumentor

    # `request_obj` is an instance of urllib.request.Request
    def request_hook(span, request_obj):
        pass

    # `request_obj` is an instance of urllib.request.Request
    # `response` is an instance of http.client.HTTPResponse
    def response_hook(span, request_obj, response)
        pass

    URLLibInstrumentor().instrument(
        request_hook=request_hook, response_hook=response_hook
    )

Exclude lists
*************

To exclude certain URLs from being tracked, set the environment variable ``OTEL_PYTHON_URLLIB_EXCLUDED_URLS``
(or ``OTEL_PYTHON_EXCLUDED_URLS`` as fallback) with comma delimited regexes representing which URLs to exclude.

For example,

::

    export OTEL_PYTHON_URLLIB_EXCLUDED_URLS="client/.*/info,healthcheck"

will exclude requests such as ``https://site/client/123/info`` and ``https://site/xyz/healthcheck``.

References
----------

* `OpenTelemetry urllib Instrumentation <https://opentelemetry-python-contrib.readthedocs.io/en/latest/instrumentation/urllib/urllib.html>`_
* `OpenTelemetry Project <https://opentelemetry.io/>`_
* `OpenTelemetry Python Examples <https://github.com/open-telemetry/opentelemetry-python/tree/main/docs/examples>`_