Source code for airflow.providers.cloudant.hooks.cloudant

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"""Hook for Cloudant"""
from typing import Any, Dict

from cloudant import cloudant  # type: ignore[attr-defined]

from airflow.exceptions import AirflowException
from airflow.hooks.base import BaseHook

[docs]class CloudantHook(BaseHook): """ Interact with Cloudant. This class is a thin wrapper around the cloudant python library. .. seealso:: the latest documentation `here <>`_. :param cloudant_conn_id: The connection id to authenticate and get a session object from cloudant. """
[docs] conn_name_attr = 'cloudant_conn_id'
[docs] default_conn_name = 'cloudant_default'
[docs] conn_type = 'cloudant'
[docs] hook_name = 'Cloudant'
[docs] def get_ui_field_behaviour() -> Dict[str, Any]: """Returns custom field behaviour""" return { "hidden_fields": ['port', 'extra'], "relabeling": {'host': 'Account', 'login': 'Username (or API Key)', 'schema': 'Database'},
} def __init__(self, cloudant_conn_id: str = default_conn_name) -> None: super().__init__() self.cloudant_conn_id = cloudant_conn_id
[docs] def get_conn(self) -> cloudant: """ Opens a connection to the cloudant service and closes it automatically if used as context manager. .. note:: In the connection form: - 'host' equals the 'Account' (optional) - 'login' equals the 'Username (or API Key)' (required) - 'password' equals the 'Password' (required) :return: an authorized cloudant session context manager object. :rtype: cloudant """ conn = self.get_connection(self.cloudant_conn_id) self._validate_connection(conn) cloudant_session = cloudant(user=conn.login, passwd=conn.password, return cloudant_session
def _validate_connection(self, conn: cloudant) -> None: for conn_param in ['login', 'password']: if not getattr(conn, conn_param): raise AirflowException(f'missing connection parameter {conn_param}')

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