Source code for airflow.providers.microsoft.azure.hooks.base_azure
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from typing import Any
from azure.common.client_factory import get_client_from_auth_file, get_client_from_json_dict
from azure.common.credentials import ServicePrincipalCredentials
from airflow.exceptions import AirflowException
from airflow.hooks.base import BaseHook
[docs]class AzureBaseHook(BaseHook):
"""
This hook acts as a base hook for azure services. It offers several authentication mechanisms to
authenticate the client library used for upstream azure hooks.
:param sdk_client: The SDKClient to use.
:param conn_id: The azure connection id which refers to the information to connect to the service.
"""
[docs] conn_name_attr = 'conn_id'
[docs] default_conn_name = 'azure_default'
def __init__(self, sdk_client: Any, conn_id: str = 'azure_default'):
self.sdk_client = sdk_client
self.conn_id = conn_id
super().__init__()
[docs] def get_conn(self) -> Any:
"""
Authenticates the resource using the connection id passed during init.
:return: the authenticated client.
"""
conn = self.get_connection(self.conn_id)
key_path = conn.extra_dejson.get('key_path')
if key_path:
if not key_path.endswith('.json'):
raise AirflowException('Unrecognised extension for key file.')
self.log.info('Getting connection using a JSON key file.')
return get_client_from_auth_file(client_class=self.sdk_client, auth_path=key_path)
key_json = conn.extra_dejson.get('key_json')
if key_json:
self.log.info('Getting connection using a JSON config.')
return get_client_from_json_dict(client_class=self.sdk_client, config_dict=key_json)
self.log.info('Getting connection using specific credentials and subscription_id.')
return self.sdk_client(
credentials=ServicePrincipalCredentials(
client_id=conn.login, secret=conn.password, tenant=conn.extra_dejson.get('tenantId')
),
subscription_id=conn.extra_dejson.get('subscriptionId'),
)