93 lines
2.9 KiB
Python
93 lines
2.9 KiB
Python
#
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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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from stevedore import extension
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from heat.engine import clients
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from heat.engine import environment
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from heat.engine import plugin_manager
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def _register_resources(env, type_pairs):
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for res_name, res_class in type_pairs:
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env.register_class(res_name, res_class)
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def _register_constraints(env, type_pairs):
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for constraint_name, constraint in type_pairs:
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env.register_constraint(constraint_name, constraint)
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def _register_stack_lifecycle_plugins(env, type_pairs):
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for stack_lifecycle_name, stack_lifecycle_class in type_pairs:
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env.register_stack_lifecycle_plugin(stack_lifecycle_name,
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stack_lifecycle_class)
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def _get_mapping(namespace):
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mgr = extension.ExtensionManager(
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namespace=namespace,
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invoke_on_load=False)
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return [[name, mgr[name].plugin] for name in mgr.names()]
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_environment = None
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def global_env():
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if _environment is None:
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initialise()
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return _environment
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def initialise():
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global _environment
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if _environment is not None:
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return
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clients.initialise()
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global_env = environment.Environment({}, user_env=False)
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_load_global_environment(global_env)
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_environment = global_env
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def _load_global_environment(env):
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_load_global_resources(env)
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environment.read_global_environment(env)
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def _load_global_resources(env):
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_register_constraints(env, _get_mapping('heat.constraints'))
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_register_stack_lifecycle_plugins(
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env,
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_get_mapping('heat.stack_lifecycle_plugins'))
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manager = plugin_manager.PluginManager(__name__)
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# Sometimes resources should not be available for registration in Heat due
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# to unsatisfied dependencies. We look first for the function
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# 'available_resource_mapping', which should return the filtered resources.
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# If it is not found, we look for the legacy 'resource_mapping'.
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resource_mapping = plugin_manager.PluginMapping(['available_resource',
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'resource'])
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constraint_mapping = plugin_manager.PluginMapping('constraint')
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_register_resources(env, resource_mapping.load_all(manager))
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_register_constraints(env, constraint_mapping.load_all(manager))
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def list_opts():
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from heat.engine.resources.aws.lb import loadbalancer
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yield None, loadbalancer.loadbalancer_opts
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