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# Copyright (c) 2015 Intel Research and Development Ireland Ltd.
#
# 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 os
import time
from experimental_framework import heat_manager
from experimental_framework import common
MAX_RETRY = 3
class DeploymentUnit:
"""
This unit is in charge to manage the deployment of the workloads under
test and any other workloads necessary to
the benchmark
"""
def __init__(self, openstack_credentials):
self.heat_manager = heat_manager.HeatManager(openstack_credentials)
self.deployed_stacks = list()
def destroy_heat_template(self, stack_name):
"""
Destroys a stack
:param stack_name: Stack of the name to be destroyed (sting)
:return: None
"""
try:
if self.heat_manager.check_stack_status(stack_name):
if stack_name in self.deployed_stacks:
self.deployed_stacks.remove(stack_name)
self.heat_manager.delete_stack(stack_name)
status = self.heat_manager.check_stack_status(stack_name)
while status and 'DELETE_IN_PROGRESS' in status:
common.LOG.info(status)
time.sleep(5)
status = self.heat_manager.check_stack_status(stack_name)
return True
except Exception as e:
common.LOG.debug(e.message)
return False
def destroy_all_deployed_stacks(self):
"""
Destroys all the stacks currently deployed
:return: None
"""
for stack in self.deployed_stacks:
if self.heat_manager.is_stack_deployed(stack):
self.destroy_heat_template(stack)
def deploy_heat_template(self, template_file, stack_name, parameters,
attempt=0):
"""
Deploys a heat template and in case of failure retries 3 times
:param template_file: full path file name of the heat template
:param stack_name: name of the stack to deploy
:param parameters: parameters to be given to the heat template
:param attempt: number of current attempt
:return: returns True in case the creation is completed
returns False in case the creation is failed
"""
if not os.path.isfile(template_file):
raise ValueError('The specified file does not exist ("' +
template_file + '")')
try:
self.heat_manager.create_stack(template_file, stack_name,
parameters)
deployed = True
except Exception as e:
common.LOG.debug(e.message)
deployed = False
if not deployed and 'COMPLETE' in \
self.heat_manager.check_stack_status(stack_name):
try:
self.destroy_heat_template(stack_name)
except Exception as e:
common.LOG.debug(e.message)
pass
status = self.heat_manager.check_stack_status(stack_name)
while status and 'CREATE_IN_PROGRESS' in status:
time.sleep(5)
status = self.heat_manager.check_stack_status(stack_name)
if status and ('FAILED' in status or 'NOT_FOUND' in status):
if attempt < MAX_RETRY:
attempt += 1
try:
self.destroy_heat_template(stack_name)
except Exception as e:
common.LOG.debug(e.message)
pass
return self.deploy_heat_template(template_file, stack_name,
parameters, attempt)
else:
try:
self.destroy_heat_template(stack_name)
except Exception as e:
common.LOG.debug(e.message)
finally:
return False
if self.heat_manager.check_stack_status(stack_name) and \
'COMPLETE' in self.heat_manager.\
check_stack_status(stack_name):
self.deployed_stacks.append(stack_name)
return True
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