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from airflow.exceptions import AirflowException
from airflow.hooks.http_hook import HttpHook
from airflow.models import BaseOperator
from airflow.utils.decorators import apply_defaults
[docs]class SimpleHttpOperator(BaseOperator):
"""
Calls an endpoint on an HTTP system to execute an action
:param http_conn_id: The connection to run the operator against
:type http_conn_id: str
:param endpoint: The relative part of the full url. (templated)
:type endpoint: str
:param method: The HTTP method to use, default = "POST"
:type method: str
:param data: The data to pass. POST-data in POST/PUT and params
in the URL for a GET request. (templated)
:type data: For POST/PUT, depends on the content-type parameter,
for GET a dictionary of key/value string pairs
:param headers: The HTTP headers to be added to the GET request
:type headers: a dictionary of string key/value pairs
:param response_check: A check against the 'requests' response object.
Returns True for 'pass' and False otherwise.
:type response_check: A lambda or defined function.
:param extra_options: Extra options for the 'requests' library, see the
'requests' documentation (options to modify timeout, ssl, etc.)
:type extra_options: A dictionary of options, where key is string and value
depends on the option that's being modified.
:param xcom_push: Push the response to Xcom (default: False).
If xcom_push is True, response of an HTTP request will also
be pushed to an XCom.
:type xcom_push: bool
:param log_response: Log the response (default: False)
:type log_response: bool
"""
[docs] template_fields = ('endpoint', 'data',)
@apply_defaults
def __init__(self,
endpoint,
method='POST',
data=None,
headers=None,
response_check=None,
extra_options=None,
xcom_push=False,
http_conn_id='http_default',
log_response=False,
*args, **kwargs):
super(SimpleHttpOperator, self).__init__(*args, **kwargs)
self.http_conn_id = http_conn_id
self.method = method
self.endpoint = endpoint
self.headers = headers or {}
self.data = data or {}
self.response_check = response_check
self.extra_options = extra_options or {}
self.xcom_push_flag = xcom_push
self.log_response = log_response
[docs] def execute(self, context):
http = HttpHook(self.method, http_conn_id=self.http_conn_id)
self.log.info("Calling HTTP method")
response = http.run(self.endpoint,
self.data,
self.headers,
self.extra_options)
if self.log_response:
self.log.info(response.text)
if self.response_check:
if not self.response_check(response):
raise AirflowException("Response check returned False.")
if self.xcom_push_flag:
return response.text