209 lines
7.7 KiB
Python
209 lines
7.7 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
import logging
|
|
import os
|
|
import requests
|
|
import yaml
|
|
|
|
from airflow.models import BaseOperator
|
|
from airflow.utils.decorators import apply_defaults
|
|
from airflow.plugins_manager import AirflowPlugin
|
|
from airflow.exceptions import AirflowException
|
|
|
|
from service_endpoint import ucp_service_endpoint
|
|
from service_token import shipyard_service_token
|
|
|
|
|
|
class DeckhandOperator(BaseOperator):
|
|
"""
|
|
Supports interaction with Deckhand
|
|
:param action: Task to perform
|
|
:param main_dag_name: Parent Dag
|
|
:param shipyard_conf: Location of shipyard.conf
|
|
:param sub_dag_name: Child Dag
|
|
"""
|
|
|
|
@apply_defaults
|
|
def __init__(self,
|
|
action=None,
|
|
main_dag_name=None,
|
|
shipyard_conf=None,
|
|
sub_dag_name=None,
|
|
workflow_info={},
|
|
xcom_push=True,
|
|
*args, **kwargs):
|
|
|
|
super(DeckhandOperator, self).__init__(*args, **kwargs)
|
|
self.action = action
|
|
self.main_dag_name = main_dag_name
|
|
self.shipyard_conf = shipyard_conf
|
|
self.sub_dag_name = sub_dag_name
|
|
self.workflow_info = workflow_info
|
|
self.xcom_push_flag = xcom_push
|
|
|
|
def execute(self, context):
|
|
# Initialize Variables
|
|
deckhand_design_version = None
|
|
redeploy_server = None
|
|
|
|
# Define task_instance
|
|
task_instance = context['task_instance']
|
|
|
|
# Extract information related to current workflow
|
|
# The workflow_info variable will be a dictionary
|
|
# that contains information about the workflow such
|
|
# as action_id, name and other related parameters
|
|
workflow_info = task_instance.xcom_pull(
|
|
task_ids='action_xcom', key='action',
|
|
dag_id=self.main_dag_name)
|
|
|
|
# Logs uuid of action performed by the Operator
|
|
logging.info("DeckHand Operator for action %s", workflow_info['id'])
|
|
|
|
# Retrieve information of the server that we want to redeploy if user
|
|
# executes the 'redeploy_server' dag
|
|
if workflow_info['dag_id'] == 'redeploy_server':
|
|
redeploy_server = workflow_info['parameters'].get('server-name')
|
|
|
|
if redeploy_server:
|
|
logging.info("Server to be redeployed is %s", redeploy_server)
|
|
else:
|
|
raise AirflowException('Unable to retrieve information of '
|
|
'node to be redeployed!')
|
|
|
|
# Retrieve Endpoint Information
|
|
svc_type = 'deckhand'
|
|
context['svc_endpoint'] = ucp_service_endpoint(self,
|
|
svc_type=svc_type)
|
|
logging.info("Deckhand endpoint is %s", context['svc_endpoint'])
|
|
|
|
# Deckhand API Call
|
|
# Retrieve Design Version from DeckHand
|
|
if self.action == 'deckhand_get_design_version':
|
|
# Retrieve DeckHand Design Version
|
|
deckhand_design_version = self.deckhand_get_design(context)
|
|
|
|
if deckhand_design_version:
|
|
return deckhand_design_version
|
|
else:
|
|
raise AirflowException('Failed to retrieve revision ID!')
|
|
|
|
# Validate Design using DeckHand
|
|
elif self.action == 'deckhand_validate_site_design':
|
|
# Retrieve revision_id from xcom
|
|
# Note that in the case of 'deploy_site', the dag_id will
|
|
# be 'deploy_site.deckhand_get_design_version' for the
|
|
# 'deckhand_get_design_version' task. We need to extract
|
|
# the xcom value from it in order to get the value of the
|
|
# last committed revision ID
|
|
context['revision_id'] = task_instance.xcom_pull(
|
|
task_ids='deckhand_get_design_version',
|
|
dag_id=self.main_dag_name + '.deckhand_get_design_version')
|
|
|
|
logging.info("Revision ID is %d", context['revision_id'])
|
|
self.deckhand_validate_site(context)
|
|
|
|
# No action to perform
|
|
else:
|
|
logging.info('No Action to Perform')
|
|
|
|
@shipyard_service_token
|
|
def deckhand_get_design(self, context):
|
|
# Retrieve Keystone Token and assign to X-Auth-Token Header
|
|
x_auth_token = {"X-Auth-Token": context['svc_token']}
|
|
|
|
# Form Revision Endpoint
|
|
revision_endpoint = os.path.join(context['svc_endpoint'],
|
|
'revisions')
|
|
|
|
# Retrieve Revision
|
|
logging.info("Retrieving revisions information...")
|
|
|
|
try:
|
|
query_params = {'tag': 'committed', 'sort': 'id', 'order': 'desc'}
|
|
revisions = yaml.safe_load(requests.get(
|
|
revision_endpoint, headers=x_auth_token,
|
|
params=query_params, timeout=30).text)
|
|
except requests.exceptions.RequestException as e:
|
|
raise AirflowException(e)
|
|
|
|
logging.info(revisions)
|
|
|
|
# Print the number of revisions that is currently available on
|
|
# DeckHand
|
|
logging.info("The number of revisions is %s", revisions['count'])
|
|
|
|
# Initialize Committed Version
|
|
committed_ver = None
|
|
|
|
# Search for the last committed version and save it as xcom
|
|
revision_list = revisions.get('results', [])
|
|
if revision_list:
|
|
committed_ver = revision_list[-1].get('id')
|
|
|
|
if committed_ver:
|
|
logging.info("Last committed revision is %d", committed_ver)
|
|
return committed_ver
|
|
else:
|
|
raise AirflowException("Failed to retrieve committed revision!")
|
|
|
|
@shipyard_service_token
|
|
def deckhand_validate_site(self, context):
|
|
# Retrieve Keystone Token and assign to X-Auth-Token Header
|
|
x_auth_token = {"X-Auth-Token": context['svc_token']}
|
|
|
|
# Form Validation Endpoint
|
|
validation_endpoint = os.path.join(context['svc_endpoint'],
|
|
'revisions',
|
|
str(context['revision_id']),
|
|
'validations')
|
|
logging.info(validation_endpoint)
|
|
|
|
# Retrieve Validation list
|
|
logging.info("Retrieving validation list...")
|
|
|
|
try:
|
|
retrieved_list = yaml.safe_load(
|
|
requests.get(validation_endpoint, headers=x_auth_token,
|
|
timeout=30).text)
|
|
except requests.exceptions.RequestException as e:
|
|
raise AirflowException(e)
|
|
|
|
logging.info(retrieved_list)
|
|
|
|
# Initialize Validation Status
|
|
validation_status = True
|
|
|
|
# Construct validation_list
|
|
validation_list = retrieved_list.get('results', [])
|
|
|
|
# Assigns 'False' to validation_status if result status
|
|
# is 'failure'
|
|
for validation in validation_list:
|
|
if validation.get('status') == 'failure':
|
|
validation_status = False
|
|
break
|
|
|
|
if validation_status:
|
|
logging.info("Revision %d has been successfully validated",
|
|
context['revision_id'])
|
|
else:
|
|
raise AirflowException("DeckHand Site Design Validation Failed!")
|
|
|
|
|
|
class DeckhandOperatorPlugin(AirflowPlugin):
|
|
name = 'deckhand_operator_plugin'
|
|
operators = [DeckhandOperator]
|