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Moved all the swarm templates and template_definition code to the magnum/drivers folder. Moved base template_definition classes to drivers/common folder Change-Id: Ieff57f0f47835c35d9f17c3d7d1b7e6a40907462 Partially-Implements: blueprint bay-drivers Co-Authored-by: Spyros Trigazis <strigazi@gmail.com>changes/73/319973/17
Murali Allada
6 years ago
committed by
Spyros Trigazis
38 changed files with 670 additions and 534 deletions
@ -0,0 +1,452 @@
|
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# Copyright 2016 Rackspace Inc. All rights reserved. |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); you may |
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# not use this file except in compliance with the License. You may obtain |
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# 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, WITHOUT |
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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# License for the specific language governing permissions and limitations |
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# under the License. |
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import abc |
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import ast |
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|
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from oslo_config import cfg |
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from oslo_log import log as logging |
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from pkg_resources import iter_entry_points |
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import requests |
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import six |
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from magnum.common import clients |
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from magnum.common import exception |
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from magnum.common import paths |
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from magnum.i18n import _ |
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from magnum.i18n import _LW |
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from requests import exceptions as req_exceptions |
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LOG = logging.getLogger(__name__) |
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template_def_opts = [ |
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cfg.StrOpt('k8s_atomic_template_path', |
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default=paths.basedir_def('templates/kubernetes/' |
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'kubecluster.yaml'), |
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deprecated_name='template_path', |
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deprecated_group='bay_heat', |
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help=_( |
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'Location of template to build a k8s cluster on atomic.')), |
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cfg.StrOpt('k8s_coreos_template_path', |
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default=paths.basedir_def('templates/kubernetes/' |
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'kubecluster-coreos.yaml'), |
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help=_( |
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'Location of template to build a k8s cluster on CoreOS.')), |
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cfg.StrOpt('etcd_discovery_service_endpoint_format', |
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default='https://discovery.etcd.io/new?size=%(size)d', |
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help=_('Url for etcd public discovery endpoint.')), |
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cfg.StrOpt('mesos_ubuntu_template_path', |
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default=paths.basedir_def('templates/mesos/' |
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'mesoscluster.yaml'), |
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help=_('Location of template to build a Mesos cluster ' |
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'on Ubuntu.')), |
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cfg.ListOpt('enabled_definitions', |
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default=['magnum_vm_atomic_k8s', 'magnum_vm_coreos_k8s', |
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'magnum_vm_atomic_swarm', 'magnum_vm_ubuntu_mesos'], |
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help=_('Enabled bay definition entry points.')), |
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] |
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|
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docker_registry_opts = [ |
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cfg.StrOpt('swift_region', |
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help=_('Region name of Swift')), |
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cfg.StrOpt('swift_registry_container', |
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default='docker_registry', |
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help=_('Name of the container in Swift which docker registry ' |
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'stores images in')) |
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] |
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CONF = cfg.CONF |
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CONF.register_opts(template_def_opts, group='bay') |
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CONF.register_opts(docker_registry_opts, group='docker_registry') |
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CONF.import_opt('trustee_domain_id', 'magnum.common.keystone', group='trust') |
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class ParameterMapping(object): |
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"""A mapping associating heat param and bay/baymodel attr. |
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A ParameterMapping is an association of a Heat parameter name with |
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an attribute on a Bay, Baymodel, or both. |
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In the case of both baymodel_attr and bay_attr being set, the Baymodel |
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will be checked first and then Bay if the attribute isn't set on the |
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Baymodel. |
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Parameters can also be set as 'required'. If a required parameter |
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isn't set, a RequiredArgumentNotProvided exception will be raised. |
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""" |
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def __init__(self, heat_param, baymodel_attr=None, |
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bay_attr=None, required=False, |
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param_type=lambda x: x): |
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self.heat_param = heat_param |
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self.baymodel_attr = baymodel_attr |
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self.bay_attr = bay_attr |
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self.required = required |
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self.param_type = param_type |
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def set_param(self, params, baymodel, bay): |
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value = None |
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if (self.baymodel_attr and |
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getattr(baymodel, self.baymodel_attr, None) is not None): |
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value = getattr(baymodel, self.baymodel_attr) |
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elif (self.bay_attr and |
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getattr(bay, self.bay_attr, None) is not None): |
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value = getattr(bay, self.bay_attr) |
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elif self.required: |
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kwargs = dict(heat_param=self.heat_param) |
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raise exception.RequiredParameterNotProvided(**kwargs) |
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if value is not None: |
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value = self.param_type(value) |
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params[self.heat_param] = value |
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class OutputMapping(object): |
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"""A mapping associating heat outputs and bay attr. |
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An OutputMapping is an association of a Heat output with a key |
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Magnum understands. |
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""" |
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def __init__(self, heat_output, bay_attr=None): |
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self.bay_attr = bay_attr |
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self.heat_output = heat_output |
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def set_output(self, stack, baymodel, bay): |
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if self.bay_attr is None: |
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return |
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output_value = self.get_output_value(stack) |
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if output_value is not None: |
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setattr(bay, self.bay_attr, output_value) |
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def matched(self, output_key): |
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return self.heat_output == output_key |
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def get_output_value(self, stack): |
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for output in stack.to_dict().get('outputs', []): |
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if output['output_key'] == self.heat_output: |
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return output['output_value'] |
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LOG.warning(_LW('stack does not have output_key %s'), self.heat_output) |
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return None |
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@six.add_metaclass(abc.ABCMeta) |
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class TemplateDefinition(object): |
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'''A mapping between Magnum objects and Heat templates. |
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A TemplateDefinition is essentially a mapping between Magnum objects |
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and Heat templates. Each TemplateDefinition has a mapping of Heat |
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parameters. |
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''' |
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definitions = None |
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provides = list() |
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def __init__(self): |
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self.param_mappings = list() |
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self.output_mappings = list() |
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@staticmethod |
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def load_entry_points(): |
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for entry_point in iter_entry_points('magnum.template_definitions'): |
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yield entry_point, entry_point.load(require=False) |
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@classmethod |
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def get_template_definitions(cls): |
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'''Retrieves bay definitions from python entry_points. |
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Example: |
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With the following classes: |
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class TemplateDefinition1(TemplateDefinition): |
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provides = [ |
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('server_type1', 'os1', 'coe1') |
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] |
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class TemplateDefinition2(TemplateDefinition): |
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provides = [ |
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('server_type2', 'os2', 'coe2') |
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] |
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And the following entry_points: |
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magnum.template_definitions = |
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template_name_1 = some.python.path:TemplateDefinition1 |
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template_name_2 = some.python.path:TemplateDefinition2 |
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get_template_definitions will return: |
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{ |
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(server_type1, os1, coe1): |
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{'template_name_1': TemplateDefinition1}, |
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(server_type2, os2, coe2): |
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{'template_name_2': TemplateDefinition2} |
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} |
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:return: dict |
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''' |
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if not cls.definitions: |
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cls.definitions = dict() |
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for entry_point, def_class in cls.load_entry_points(): |
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for bay_type in def_class.provides: |
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bay_type_tuple = (bay_type['server_type'], |
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bay_type['os'], |
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bay_type['coe']) |
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providers = cls.definitions.setdefault(bay_type_tuple, |
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dict()) |
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providers[entry_point.name] = def_class |
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return cls.definitions |
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@classmethod |
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def get_template_definition(cls, server_type, os, coe): |
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'''Get enabled TemplateDefinitions. |
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Returns the enabled TemplateDefinition class for the provided |
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bay_type. |
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With the following classes: |
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class TemplateDefinition1(TemplateDefinition): |
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provides = [ |
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('server_type1', 'os1', 'coe1') |
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] |
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class TemplateDefinition2(TemplateDefinition): |
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provides = [ |
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('server_type2', 'os2', 'coe2') |
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] |
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And the following entry_points: |
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magnum.template_definitions = |
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template_name_1 = some.python.path:TemplateDefinition1 |
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template_name_2 = some.python.path:TemplateDefinition2 |
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get_template_name_1_definition('server_type2', 'os2', 'coe2') |
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will return: TemplateDefinition2 |
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:param server_type: The server_type the bay definition |
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will build on |
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:param os: The operation system the bay definition will build on |
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:param coe: The Container Orchestration Environment the bay will |
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produce |
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:return: class |
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''' |
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definition_map = cls.get_template_definitions() |
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bay_type = (server_type, os, coe) |
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if bay_type not in definition_map: |
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raise exception.BayTypeNotSupported( |
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server_type=server_type, |
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os=os, |
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coe=coe) |
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type_definitions = definition_map[bay_type] |
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for name in cfg.CONF.bay.enabled_definitions: |
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if name in type_definitions: |
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return type_definitions[name]() |
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raise exception.BayTypeNotEnabled( |
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server_type=server_type, os=os, coe=coe) |
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def add_parameter(self, *args, **kwargs): |
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param = ParameterMapping(*args, **kwargs) |
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self.param_mappings.append(param) |
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def add_output(self, *args, **kwargs): |
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mapping_type = kwargs.pop('mapping_type', OutputMapping) |
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output = mapping_type(*args, **kwargs) |
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self.output_mappings.append(output) |
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def get_output(self, *args, **kwargs): |
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for output in self.output_mappings: |
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if output.matched(*args, **kwargs): |
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return output |
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return None |
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def get_params(self, context, baymodel, bay, **kwargs): |
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"""Pulls template parameters from Baymodel and/or Bay. |
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:param context: Context to pull template parameters for |
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:param baymodel: Baymodel to pull template parameters from |
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:param bay: Bay to pull template parameters from |
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:param extra_params: Any extra params to be provided to the template |
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:return: dict of template parameters |
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""" |
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template_params = dict() |
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for mapping in self.param_mappings: |
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mapping.set_param(template_params, baymodel, bay) |
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if 'extra_params' in kwargs: |
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template_params.update(kwargs.get('extra_params')) |
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return template_params |
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def get_env_files(self, baymodel): |
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"""Collects stack environment files based upon Baymodel attributes. |
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Base implementation returns no files (empty list). Meant to be |
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overridden by subclasses. |
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:param baymodel: Baymodel to collect environment files for |
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:return: list of relative paths to environment files |
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""" |
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return [] |
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def get_heat_param(self, bay_attr=None, baymodel_attr=None): |
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"""Returns stack param name. |
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Return stack param name using bay and baymodel attributes |
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:param bay_attr bay attribute from which it maps to stack attribute |
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:param baymodel_attr baymodel attribute from which it maps |
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to stack attribute |
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:return stack parameter name or None |
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""" |
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for mapping in self.param_mappings: |
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if (mapping.bay_attr == bay_attr and |
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mapping.baymodel_attr == baymodel_attr): |
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return mapping.heat_param |
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return None |
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def update_outputs(self, stack, baymodel, bay): |
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for output in self.output_mappings: |
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output.set_output(stack, baymodel, bay) |
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@abc.abstractproperty |
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def template_path(self): |
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pass |
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def extract_definition(self, context, baymodel, bay, **kwargs): |
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return (self.template_path, |
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self.get_params(context, baymodel, bay, **kwargs), |
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self.get_env_files(baymodel)) |
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class BaseTemplateDefinition(TemplateDefinition): |
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def __init__(self): |
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super(BaseTemplateDefinition, self).__init__() |
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self._osc = None |
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self.add_parameter('ssh_key_name', |
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baymodel_attr='keypair_id', |
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required=True) |
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self.add_parameter('server_image', |
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baymodel_attr='image_id') |
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self.add_parameter('dns_nameserver', |
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baymodel_attr='dns_nameserver') |
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self.add_parameter('http_proxy', |
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baymodel_attr='http_proxy') |
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self.add_parameter('https_proxy', |
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baymodel_attr='https_proxy') |
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self.add_parameter('no_proxy', |
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baymodel_attr='no_proxy') |
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self.add_parameter('number_of_masters', |
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bay_attr='master_count') |
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@abc.abstractproperty |
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def template_path(self): |
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pass |
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def get_osc(self, context): |
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if not self._osc: |
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self._osc = clients.OpenStackClients(context) |
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return self._osc |
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def get_params(self, context, baymodel, bay, **kwargs): |
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osc = self.get_osc(context) |
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extra_params = kwargs.pop('extra_params', {}) |
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extra_params['trustee_domain_id'] = osc.keystone().trustee_domain_id |
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extra_params['trustee_user_id'] = bay.trustee_user_id |
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extra_params['trustee_username'] = bay.trustee_username |
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extra_params['trustee_password'] = bay.trustee_password |
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extra_params['trust_id'] = bay.trust_id |
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extra_params['auth_url'] = context.auth_url |
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return super(BaseTemplateDefinition, |
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self).get_params(context, baymodel, bay, |
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extra_params=extra_params, |
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**kwargs) |
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def validate_discovery_url(self, discovery_url, expect_size): |
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url = str(discovery_url) |
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if url[len(url)-1] == '/': |
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url += '_config/size' |
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else: |
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url += '/_config/size' |
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try: |
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result = requests.get(url).text |
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except req_exceptions.RequestException as err: |
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LOG.error(six.text_type(err)) |
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raise exception.GetClusterSizeFailed( |
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discovery_url=discovery_url) |
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try: |
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result = ast.literal_eval(result) |
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except (ValueError, SyntaxError): |
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raise exception.InvalidBayDiscoveryURL( |
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discovery_url=discovery_url) |
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node_value = result.get('node', None) |
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if node_value is None: |
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raise exception.InvalidBayDiscoveryURL( |
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discovery_url=discovery_url) |
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|
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value = node_value.get('value', None) |
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if value is None: |
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raise exception.InvalidBayDiscoveryURL( |
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discovery_url=discovery_url) |
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elif int(value) != expect_size: |
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raise exception.InvalidClusterSize( |
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expect_size=expect_size, |
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size=int(value), |
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discovery_url=discovery_url) |
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|
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def get_discovery_url(self, bay): |
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if hasattr(bay, 'discovery_url') and bay.discovery_url: |
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if getattr(bay, 'master_count', None) is not None: |
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self.validate_discovery_url(bay.discovery_url, |
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bay.master_count) |
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else: |
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self.validate_discovery_url(bay.discovery_url, 1) |
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discovery_url = bay.discovery_url |
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else: |
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discovery_endpoint = ( |
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cfg.CONF.bay.etcd_discovery_service_endpoint_format % |
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{'size': bay.master_count}) |
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try: |
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discovery_url = requests.get(discovery_endpoint).text |
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except req_exceptions.RequestException as err: |
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LOG.error(six.text_type(err)) |
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raise exception.GetDiscoveryUrlFailed( |
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discovery_endpoint=discovery_endpoint) |
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if not discovery_url: |
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raise exception.InvalidDiscoveryURL( |
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discovery_url=discovery_url, |
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discovery_endpoint=discovery_endpoint) |
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else: |
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bay.discovery_url = discovery_url |
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return discovery_url |
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@ -0,0 +1,118 @@
|
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# Copyright 2016 Rackspace Inc. All rights reserved. |
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# |
||||
# 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. |
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import os |
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|
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from magnum.drivers.common import template_def |
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from oslo_config import cfg |
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|
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CONF = cfg.CONF |
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DOCKER_PORT = '2376' |
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|
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|
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class SwarmApiAddressOutputMapping(template_def.OutputMapping): |
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|
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def set_output(self, stack, baymodel, bay): |
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if self.bay_attr is None: |
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return |
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|
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output_value = self.get_output_value(stack) |
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if output_value is not None: |
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protocol = 'https' |
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if baymodel.tls_disabled: |
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protocol = 'tcp' |
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|
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params = { |
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'protocol': protocol, |
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'address': output_value, |
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'port': DOCKER_PORT, |
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} |
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value = "%(protocol)s://%(address)s:%(port)s" % params |
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setattr(bay, self.bay_attr, value) |
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|
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|
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class AtomicSwarmTemplateDefinition(template_def.BaseTemplateDefinition): |
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"""Docker swarm template for a Fedora Atomic VM.""" |
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|
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provides = [ |
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{'server_type': 'vm', 'os': 'fedora-atomic', 'coe': 'swarm'}, |
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] |
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|
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def __init__(self): |
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super(AtomicSwarmTemplateDefinition, self).__init__() |
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self.add_parameter('bay_uuid', |
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bay_attr='uuid', |
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param_type=str) |
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self.add_parameter('number_of_nodes', |
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bay_attr='node_count') |
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self.add_parameter('master_flavor', |
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baymodel_attr='master_flavor_id') |
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self.add_parameter('node_flavor', |
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baymodel_attr='flavor_id') |
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self.add_parameter('docker_volume_size', |
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baymodel_attr='docker_volume_size') |
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self.add_parameter('external_network', |
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baymodel_attr='external_network_id', |
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required=True) |
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self.add_parameter('network_driver', |
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baymodel_attr='network_driver') |
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self.add_parameter('tls_disabled', |
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baymodel_attr='tls_disabled', |
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required=True) |
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self.add_parameter('registry_enabled', |
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baymodel_attr='registry_enabled') |
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self.add_parameter('docker_storage_driver', |
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baymodel_attr='docker_storage_driver') |
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self.add_output('api_address', |
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bay_attr='api_address', |
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mapping_type=SwarmApiAddressOutputMapping) |
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self.add_output('swarm_master_private', |
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bay_attr=None) |
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self.add_output('swarm_masters', |
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bay_attr='master_addresses') |
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self.add_output('swarm_nodes_private', |
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bay_attr=None) |
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self.add_output('swarm_nodes', |
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bay_attr='node_addresses') |
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self.add_output('discovery_url', |
||||
bay_attr='discovery_url') |
||||
|
||||
def get_params(self, context, baymodel, bay, **kwargs): |
||||
extra_params = kwargs.pop('extra_params', {}) |
||||
extra_params['discovery_url'] = self.get_discovery_url(bay) |
||||
# HACK(apmelton) - This uses the user's bearer token, ideally |
||||
# it should be replaced with an actual trust token with only |
||||
# access to do what the template needs it to do. |
||||
osc = self.get_osc(context) |
||||
extra_params['magnum_url'] = osc.magnum_url() |
||||
|
||||
label_list = ['flannel_network_cidr', 'flannel_backend', |
||||
'flannel_network_subnetlen'] |
||||
|
||||
for label in label_list: |
||||
extra_params[label] = baymodel.labels.get(label) |
||||
|
||||
if baymodel.registry_enabled: |
||||
extra_params['swift_region'] = CONF.docker_registry.swift_region |
||||
extra_params['registry_container'] = ( |
||||
CONF.docker_registry.swift_registry_container) |
||||
|
||||
return super(AtomicSwarmTemplateDefinition, |
||||
self).get_params(context, baymodel, bay, |
||||
extra_params=extra_params, |
||||
**kwargs) |
||||
|
||||
@property |
||||
def template_path(self): |
||||
return os.path.join(os.path.dirname(os.path.realpath(__file__)), |
||||
'templates/cluster.yaml') |
||||
@ -0,0 +1,38 @@
|
||||
# This file contains docker storage drivers configuration for fedora |
||||
# atomic hosts. Currently, devicemapper and overlay are supported. |
||||
|
||||
# Remove any existing docker-storage configuration. In case of an |
||||
# existing configuration, docker-storage-setup will fail. |
||||
clear_docker_storage_congiguration () { |
||||
if [ -f /etc/sysconfig/docker-storage ]; then |
||||
sed -i "/^DOCKER_STORAGE_OPTIONS=/ s/=.*/=/" /etc/sysconfig/docker-storage |
||||
fi |
||||
} |
||||
|
||||
# Configure docker storage with xfs as backing filesystem. |
||||
configure_overlay () { |
||||
clear_docker_storage_congiguration |
||||
|
||||
rm -rf /var/lib/docker/* |
||||
|
||||
mkfs.xfs ${device_path} |
||||
echo "${device_path} /var/lib/docker xfs defaults 0 0" >> /etc/fstab |
||||
mount -a |
||||
|
||||
echo "STORAGE_DRIVER=overlay" > /etc/sysconfig/docker-storage-setup |
||||
|
||||
# SELinux must be enabled and in enforcing mode on the physical |
||||
# machine, but must be disabled in the container when performing |
||||
# container separation |
||||
sed -i "/^OPTIONS=/ s/--selinux-enabled/--selinux-enabled=false/" /etc/sysconfig/docker |
||||
} |
||||
|
||||
# Configure docker storage with devicemapper using direct LVM |
||||
configure_devicemapper () { |
||||
clear_docker_storage_congiguration |
||||
|
||||
pvcreate ${device_path} |
||||
vgcreate docker ${device_path} |
||||
|
||||
echo "VG=docker" > /etc/sysconfig/docker-storage-setup |
||||
} |
||||
@ -0,0 +1,16 @@
|
||||
# Copyright 2016 - Rackspace Hosting |
||||
# |
||||
# 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. |
||||
|
||||
version = '1.0.0' |
||||
driver = 'swarm_atomic' |
||||