132 lines
4.7 KiB
Python
132 lines
4.7 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
|
|
|
|
from airflow.exceptions import AirflowException
|
|
from airflow.models import BaseOperator
|
|
from airflow.plugins_manager import AirflowPlugin
|
|
from airflow.utils.decorators import apply_defaults
|
|
|
|
try:
|
|
from service_endpoint import ucp_service_endpoint
|
|
except ImportError:
|
|
from shipyard_airflow.plugins.service_endpoint import ucp_service_endpoint
|
|
|
|
try:
|
|
from xcom_puller import XcomPuller
|
|
except ImportError:
|
|
from shipyard_airflow.plugins.xcom_puller import XcomPuller
|
|
|
|
try:
|
|
from xcom_pusher import XcomPusher
|
|
except ImportError:
|
|
from shipyard_airflow.plugins.xcom_pusher import XcomPusher
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class UcpHealthCheckOperator(BaseOperator):
|
|
"""
|
|
UCP Health Checks
|
|
"""
|
|
|
|
@apply_defaults
|
|
def __init__(self,
|
|
shipyard_conf=None,
|
|
main_dag_name=None,
|
|
xcom_push=True,
|
|
*args,
|
|
**kwargs):
|
|
|
|
super(UcpHealthCheckOperator, self).__init__(*args, **kwargs)
|
|
self.shipyard_conf = shipyard_conf
|
|
self.main_dag_name = main_dag_name
|
|
self.xcom_push_flag = xcom_push
|
|
|
|
def execute(self, context):
|
|
|
|
# Initialize variable
|
|
ucp_components = [
|
|
'armada',
|
|
'deckhand',
|
|
'kubernetesprovisioner',
|
|
'physicalprovisioner',
|
|
'shipyard']
|
|
|
|
# Define task_instance
|
|
self.task_instance = context['task_instance']
|
|
|
|
# Set up and retrieve values from xcom
|
|
self.xcom_puller = XcomPuller(self.main_dag_name, self.task_instance)
|
|
self.action_info = self.xcom_puller.get_action_info()
|
|
|
|
# Set up xcom_pusher to push values to xcom
|
|
self.xcom_pusher = XcomPusher(self.task_instance)
|
|
|
|
# Loop through various UCP Components
|
|
for component in ucp_components:
|
|
|
|
# Retrieve Endpoint Information
|
|
service_endpoint = ucp_service_endpoint(self,
|
|
svc_type=component)
|
|
LOG.info("%s endpoint is %s", component, service_endpoint)
|
|
|
|
# Construct Health Check Endpoint
|
|
healthcheck_endpoint = os.path.join(service_endpoint,
|
|
'health')
|
|
|
|
LOG.info("%s healthcheck endpoint is %s", component,
|
|
healthcheck_endpoint)
|
|
|
|
try:
|
|
LOG.info("Performing Health Check on %s", component)
|
|
# Set health check timeout to 30 seconds
|
|
req = requests.get(healthcheck_endpoint, timeout=30)
|
|
|
|
# An empty response/body returned by a component means
|
|
# that it is healthy
|
|
if req.status_code == 204:
|
|
LOG.info("%s is alive and healthy", component)
|
|
|
|
except requests.exceptions.RequestException as e:
|
|
self.log_health_exception(component, e)
|
|
|
|
def log_health_exception(self, component, error_messages):
|
|
"""Logs Exceptions for health check
|
|
"""
|
|
# If Drydock health check fails and continue-on-fail, continue
|
|
# and create xcom key 'drydock_continue_on_fail'
|
|
if (component == 'physicalprovisioner' and
|
|
self.action_info['parameters'].get(
|
|
'continue-on-fail', 'false').lower() == 'true' and
|
|
self.action_info['dag_id'] in ['update_site', 'deploy_site']):
|
|
LOG.warning('Drydock did not pass health check. Continuing '
|
|
'as "continue-on-fail" option is enabled.')
|
|
self.xcom_pusher.xcom_push(key='drydock_continue_on_fail',
|
|
value=True)
|
|
|
|
else:
|
|
LOG.error(error_messages)
|
|
raise AirflowException("Health check failed for %s component on "
|
|
"dag_id=%s. Details: %s" %
|
|
(component, self.action_info.get('dag_id'),
|
|
error_messages))
|
|
|
|
|
|
class UcpHealthCheckPlugin(AirflowPlugin):
|
|
name = "ucp_healthcheck_plugin"
|
|
operators = [UcpHealthCheckOperator]
|