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##############################################################################
# Copyright (c) 2018 Nokia Corporation and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import os
import time
from heatclient.common.template_utils import get_template_contents
from heatclient import exc as heat_excecption
from doctor_tests.identity_auth import get_identity_auth
from doctor_tests.identity_auth import get_session
from doctor_tests.os_clients import heat_client
class Stack(object):
def __init__(self, conf, log):
self.conf = conf
self.log = log
auth = get_identity_auth(project=self.conf.doctor_project)
self.heat = heat_client(self.conf.heat_version,
get_session(auth=auth))
self.stack_name = None
self.stack_id = None
self.template = None
self.parameters = {}
self.files = {}
# standard yaml.load will not work for hot tpl becasue of date format in
# heat_template_version is not string
def get_hot_tpl(self, template_file):
if not os.path.isfile(template_file):
raise Exception('File(%s) does not exist' % template_file)
return get_template_contents(template_file=template_file)
def _wait_stack_action_complete(self, action):
action_in_progress = '%s_IN_PROGRESS' % action
action_complete = '%s_COMPLETE' % action
action_failed = '%s_FAILED' % action
status = action_in_progress
stack_retries = 160
while status == action_in_progress and stack_retries > 0:
time.sleep(2)
try:
stack = self.heat.stacks.get(self.stack_name)
except heat_excecption.HTTPNotFound:
if action == 'DELETE':
# Might happen you never get status as stack deleted
status = action_complete
break
else:
raise Exception('unable to get stack')
status = stack.stack_status
stack_retries = stack_retries - 1
if stack_retries == 0 and status != action_complete:
raise Exception("stack %s not completed within 5min, status:"
" %s" % (action, status))
elif status == action_complete:
self.log.info('stack %s %s' % (self.stack_name, status))
elif status == action_failed:
raise Exception("stack %s failed" % action)
else:
self.log.error('stack %s %s' % (self.stack_name, status))
raise Exception("stack %s unknown result" % action)
def wait_stack_delete(self):
self._wait_stack_action_complete('DELETE')
def wait_stack_create(self):
self._wait_stack_action_complete('CREATE')
def wait_stack_update(self):
self._wait_stack_action_complete('UPDATE')
def create(self, stack_name, template, parameters={}, files={}):
self.stack_name = stack_name
self.template = template
self.parameters = parameters
self.files = files
stack = self.heat.stacks.create(stack_name=self.stack_name,
files=files,
template=template,
parameters=parameters)
self.stack_id = stack['stack']['id']
try:
self.wait_stack_create()
except Exception:
# It might not always work at first
self.log.info('retry creating maintenance stack.......')
self.delete()
time.sleep(3)
stack = self.heat.stacks.create(stack_name=self.stack_name,
files=files,
template=template,
parameters=parameters)
self.stack_id = stack['stack']['id']
self.wait_stack_create()
def update(self, stack_name, stack_id, template, parameters={}, files={}):
self.heat.stacks.update(stack_name=stack_name,
stack_id=stack_id,
files=files,
template=template,
parameters=parameters)
self.wait_stack_update()
def delete(self):
if self.stack_id is not None:
self.heat.stacks.delete(self.stack_name)
self.wait_stack_delete()
else:
self.log.info('no stack to delete')
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