# -*- coding: utf-8 -*-
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# to you under the Apache License, Version 2.0 (the
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from docker import APIClient
from docker.errors import APIError
from airflow.exceptions import AirflowException
from airflow.hooks.base_hook import BaseHook
from airflow.utils.log.logging_mixin import LoggingMixin
[docs]class DockerHook(BaseHook, LoggingMixin):
"""
Interact with a private Docker registry.
:param docker_conn_id: ID of the Airflow connection where
credentials and extra configuration are stored
:type docker_conn_id: str
"""
def __init__(self,
docker_conn_id='docker_default',
base_url=None,
version=None,
tls=None
):
if not base_url:
raise AirflowException('No Docker base URL provided')
if not version:
raise AirflowException('No Docker API version provided')
conn = self.get_connection(docker_conn_id)
if not conn.host:
raise AirflowException('No Docker registry URL provided')
if not conn.login:
raise AirflowException('No username provided')
extra_options = conn.extra_dejson
self.__base_url = base_url
self.__version = version
self.__tls = tls
if conn.port:
self.__registry = "{}:{}".format(conn.host, conn.port)
else:
self.__registry = conn.host
self.__username = conn.login
self.__password = conn.password
self.__email = extra_options.get('email')
self.__reauth = False if extra_options.get('reauth') == 'no' else True
[docs] def get_conn(self):
client = APIClient(
base_url=self.__base_url,
version=self.__version,
tls=self.__tls
)
self.__login(client)
return client
[docs] def __login(self, client):
self.log.debug('Logging into Docker registry')
try:
client.login(
username=self.__username,
password=self.__password,
registry=self.__registry,
email=self.__email,
reauth=self.__reauth
)
self.log.debug('Login successful')
except APIError as docker_error:
self.log.error('Docker registry login failed: %s', str(docker_error))
raise AirflowException('Docker registry login failed: %s', str(docker_error))