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HTTP Operators
==============
The following code examples use the ``http_default`` connection which means the requests are sent against
`httpbin <https://www.httpbin.org/>`__ site to perform basic HTTP operations.
.. _howto/operator:HttpSensor:
HttpSensor
----------
Use the :class:`~airflow.providers.http.sensors.http.HttpSensor` to poke until the ``response_check`` callable evaluates
to ``true``.
Here we are poking until httpbin gives us a response text containing ``httpbin``.
.. exampleinclude:: /../../airflow/providers/http/example_dags/example_http.py
:language: python
:start-after: [START howto_operator_http_http_sensor_check]
:end-before: [END howto_operator_http_http_sensor_check]
.. _howto/operator:SimpleHttpOperator:
SimpleHttpOperator
------------------
Use the :class:`~airflow.providers.http.operators.http.SimpleHttpOperator` to call HTTP requests and get
the response text back.
In the first example we are calling a ``POST`` with json data and succeed when we get the same json data back
otherwise the task will fail.
.. exampleinclude:: /../../airflow/providers/http/example_dags/example_http.py
:language: python
:start-after: [START howto_operator_http_task_post_op]
:end-before: [END howto_operator_http_task_post_op]
Here we are calling a ``GET`` request and pass params to it. The task will succeed regardless of the response text.
.. exampleinclude:: /../../airflow/providers/http/example_dags/example_http.py
:language: python
:start-after: [START howto_operator_http_task_get_op]
:end-before: [END howto_operator_http_task_get_op]
SimpleHttpOperator returns the response body as text by default. If you want to modify the response before passing
it on the next task downstream use ``response_filter``. This is useful if:
- the API you are consuming returns a large JSON payload and you're interested in a subset of the data
- the API returns data in xml or csv and you want to convert it to JSON
- you're interested in the headers of the response instead of the body
Below is an example of retrieving data from a REST API and only returning a nested property instead of the full
response body.
.. exampleinclude:: /../../airflow/providers/http/example_dags/example_http.py
:language: python
:start-after: [START howto_operator_http_task_get_op_response_filter]
:end-before: [END howto_operator_http_task_get_op_response_filter]
In the third example we are performing a ``PUT`` operation to put / set data according to the data that is being
provided to the request.
.. exampleinclude:: /../../airflow/providers/http/example_dags/example_http.py
:language: python
:start-after: [START howto_operator_http_task_put_op]
:end-before: [END howto_operator_http_task_put_op]
In this example we call a ``DELETE`` operation to the ``delete`` endpoint. This time we are passing form data to the
request.
.. exampleinclude:: /../../airflow/providers/http/example_dags/example_http.py
:language: python
:start-after: [START howto_operator_http_task_del_op]
:end-before: [END howto_operator_http_task_del_op]
Here we pass form data to a ``POST`` operation which is equal to a usual form submit.
.. exampleinclude:: /../../airflow/providers/http/example_dags/example_http.py
:language: python
:start-after: [START howto_operator_http_task_post_op_formenc]
:end-before: [END howto_operator_http_task_post_op_formenc]