98 lines
3.5 KiB
Python
98 lines
3.5 KiB
Python
# Copyright (c) 2015 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import time
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from heatclient import exc
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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def create_stack(heat_client, stack_name, template, parameters, environment):
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stack_params = {
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'stack_name': stack_name,
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'template': template,
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'parameters': parameters,
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'environment': environment,
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}
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stack = heat_client.stacks.create(**stack_params)['stack']
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LOG.info('New stack: %s', stack)
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wait_stack_completion(heat_client, stack['id'])
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return stack['id']
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def get_stack_status(heat_client, stack_id):
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# stack.get operation may take long time and run out of time. The reason
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# is that it resolves all outputs which is done serially. On the other hand
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# stack status can be retrieved from the list operation. Internally listing
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# supports paging and every request should not take too long.
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for stack in heat_client.stacks.list():
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if stack.id == stack_id:
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return stack.status, stack.stack_status_reason
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raise exc.HTTPNotFound(message='Stack %s is not found' % stack_id)
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def wait_stack_completion(heat_client, stack_id):
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reason = None
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status = None
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while True:
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status, reason = get_stack_status(heat_client, stack_id)
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LOG.debug('Stack status: %s', status)
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if status not in ['IN_PROGRESS', '']:
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break
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time.sleep(5)
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if status != 'COMPLETE':
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resources = heat_client.resources.list(stack_id)
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for res in resources:
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if (res.resource_status != 'CREATE_COMPLETE' and
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res.resource_status_reason):
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LOG.error('Heat stack resource %(res)s of type %(type)s '
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'failed with %(reason)s',
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dict(res=res.logical_resource_id,
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type=res.resource_type,
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reason=res.resource_status_reason))
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raise Exception('Failed to deploy Heat stack %(id)s. Expected status '
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'COMPLETE, but got %(status)s. Reason: %(reason)s' %
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dict(id=stack_id, status=status, reason=reason))
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def get_stack_outputs(heat_client, stack_id):
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# try to use optimized way to retrieve outputs, fallback otherwise
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if hasattr(heat_client.stacks, 'output_list'):
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try:
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output_list = heat_client.stacks.output_list(stack_id)['outputs']
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result = {}
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for output in output_list:
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output_key = output['output_key']
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value = heat_client.stacks.output_show(stack_id, output_key)
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result[output_key] = value['output']['output_value']
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return result
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except Exception as e:
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LOG.info('Cannot get output list, fallback to old way: %s', e)
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outputs_list = heat_client.stacks.get(stack_id).to_dict()['outputs']
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return dict((item['output_key'], item['output_value'])
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for item in outputs_list)
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