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"""Example HTTP operator and sensor"""
from __future__ import annotations
import json
import os
from datetime import datetime
from airflow import DAG
from airflow.providers.http.operators.http import HttpOperator
from airflow.providers.http.sensors.http import HttpSensor
[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
[docs]DAG_ID = "example_http_operator"
[docs]dag = DAG(
DAG_ID,
default_args={"retries": 1},
tags=["example"],
start_date=datetime(2021, 1, 1),
catchup=False,
)
dag.doc_md = __doc__
# task_post_op, task_get_op and task_put_op are examples of tasks created by instantiating operators
# [START howto_operator_http_task_post_op]
[docs]task_post_op = HttpOperator(
task_id="post_op",
endpoint="post",
data=json.dumps({"priority": 5}),
headers={"Content-Type": "application/json"},
response_check=lambda response: response.json()["json"]["priority"] == 5,
dag=dag,
)
# [END howto_operator_http_task_post_op]
# [START howto_operator_http_task_post_op_formenc]
[docs]task_post_op_formenc = HttpOperator(
task_id="post_op_formenc",
endpoint="post",
data="name=Joe",
headers={"Content-Type": "application/x-www-form-urlencoded"},
dag=dag,
)
# [END howto_operator_http_task_post_op_formenc]
# [START howto_operator_http_task_get_op]
[docs]task_get_op = HttpOperator(
task_id="get_op",
method="GET",
endpoint="get",
data={"param1": "value1", "param2": "value2"},
headers={},
dag=dag,
)
# [END howto_operator_http_task_get_op]
# [START howto_operator_http_task_get_op_response_filter]
[docs]task_get_op_response_filter = HttpOperator(
task_id="get_op_response_filter",
method="GET",
endpoint="get",
response_filter=lambda response: response.json()["nested"]["property"],
dag=dag,
)
# [END howto_operator_http_task_get_op_response_filter]
# [START howto_operator_http_task_put_op]
[docs]task_put_op = HttpOperator(
task_id="put_op",
method="PUT",
endpoint="put",
data=json.dumps({"priority": 5}),
headers={"Content-Type": "application/json"},
dag=dag,
)
# [END howto_operator_http_task_put_op]
# [START howto_operator_http_task_del_op]
[docs]task_del_op = HttpOperator(
task_id="del_op",
method="DELETE",
endpoint="delete",
data="some=data",
headers={"Content-Type": "application/x-www-form-urlencoded"},
dag=dag,
)
# [END howto_operator_http_task_del_op]
# [START howto_operator_http_http_sensor_check]
[docs]task_http_sensor_check = HttpSensor(
task_id="http_sensor_check",
http_conn_id="http_default",
endpoint="",
request_params={},
response_check=lambda response: "httpbin" in response.text,
poke_interval=5,
dag=dag,
)
# [END howto_operator_http_http_sensor_check]
# [START howto_operator_http_http_sensor_check_deferrable]
[docs]task_http_sensor_check_async = HttpSensor(
task_id="http_sensor_check_async",
http_conn_id="http_default",
endpoint="",
deferrable=True,
request_params={},
poke_interval=5,
dag=dag,
)
# [END howto_operator_http_http_sensor_check_deferrable]
# [START howto_operator_http_pagination_function]
[docs]def get_next_page_cursor(response) -> dict | None:
"""
Take the raw `request.Response` object, and check for a cursor.
If a cursor exists, this function creates and return parameters to call
the next page of result.
"""
next_cursor = response.json().get("cursor")
if next_cursor:
return dict(data={"cursor": next_cursor})
return None
[docs]task_get_paginated = HttpOperator(
task_id="get_paginated",
method="GET",
endpoint="get",
data={"cursor": ""},
pagination_function=get_next_page_cursor,
dag=dag,
)
# [END howto_operator_http_pagination_function]
(
task_http_sensor_check
>> task_http_sensor_check_async
>> task_post_op
>> task_get_op
>> task_get_op_response_filter
)
task_get_op_response_filter >> task_put_op >> task_del_op >> task_post_op_formenc
task_post_op_formenc >> task_get_paginated
from tests.system.utils import get_test_run # noqa: E402
# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
[docs]test_run = get_test_run(dag)