16030aeec8
This commit reworks mechanism how context chain is built at each point. The goal was to make entire chain be dependent on format version number. This would allow for example to use yaql 1.0 legacy mode context for MuranoPL/1.0 and not to use it for 2.0. Not the entire chain is built on demand up to the root instead of attaching to existed parent context as it was before. DSL host (engine) is no more required to have custom MuranoDslExecutor implementation but a new ContextManager interface that is used to control contexts on each layer. Engine uses this interface to register system classes and engine level yaql functions. Also a ContextManager is a foundation for method mocking because now all MuranoPL methods are yaql functions stored in context and with ContextManager it is possible to inject/replace function in each scope ( global, package, class, object) Partially implements: blueprint murano-versioning Change-Id: I0a553e8044061fe780a83bc04d70b8f80580988f
190 lines
6.2 KiB
Python
190 lines
6.2 KiB
Python
# Copyright (c) 2014 Mirantis, Inc.
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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 itertools
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import eventlet
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from yaql.language import specs
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from yaql.language import utils
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from yaql.language import yaqltypes
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from murano.dsl import constants
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from murano.dsl import dsl
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from murano.dsl import dsl_types
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from murano.dsl import helpers
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from murano.dsl import linked_context
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@specs.parameter('value', dsl_types.MuranoObject)
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def id_(value):
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return value.object_id
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@specs.parameter('value', dsl_types.MuranoObject)
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@specs.parameter('type__', dsl.MuranoTypeName())
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@specs.parameter('version_spec', yaqltypes.String(True))
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def cast(context, value, type__, version_spec=None):
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return helpers.cast(
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value, type__.murano_class.name,
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version_spec or helpers.get_type(context))
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@specs.parameter('__type_name', dsl.MuranoTypeName())
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@specs.parameter('__extra', utils.MappingType)
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@specs.parameter('__owner', dsl_types.MuranoObject)
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@specs.parameter('__object_name', yaqltypes.String(True))
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def new(__context, __type_name, __owner=None, __object_name=None, __extra=None,
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**parameters):
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object_store = helpers.get_object_store(__context)
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new_context = __context.create_child_context()
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for key, value in parameters.iteritems():
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if helpers.is_keyword(key):
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new_context[key] = value
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return __type_name.murano_class.new(
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__owner, object_store, name=__object_name)(new_context, **parameters)
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@specs.parameter('type_name', dsl.MuranoTypeName())
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@specs.parameter('parameters', utils.MappingType)
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@specs.parameter('extra', utils.MappingType)
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@specs.parameter('owner', dsl_types.MuranoObject)
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@specs.parameter('object_name', yaqltypes.String(True))
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@specs.name('new')
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def new_from_dict(type_name, context, parameters,
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owner=None, object_name=None, extra=None):
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return new(context, type_name, owner, object_name, extra,
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**helpers.filter_parameters_dict(parameters))
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@specs.parameter('sender', dsl_types.MuranoObject)
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@specs.parameter('func', yaqltypes.Lambda())
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def super_(context, sender, func=None):
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cast_type = helpers.get_type(context)
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if func is None:
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return [sender.cast(type) for type in cast_type.parents(
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sender.real_this.type)]
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return itertools.imap(func, super_(context, sender))
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@specs.parameter('value', dsl_types.MuranoObject)
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@specs.parameter('func', yaqltypes.Lambda())
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def psuper(context, value, func=None):
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if func is None:
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return super_(context, value)
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return helpers.parallel_select(super_(context, value), func)
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@specs.extension_method
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def require(value):
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if value is None:
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raise ValueError('Required value is missing')
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return value
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@specs.parameter('obj', dsl_types.MuranoObject)
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@specs.parameter('murano_class_ref', dsl.MuranoTypeName())
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@specs.extension_method
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def find(obj, murano_class_ref):
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p = obj.owner
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while p is not None:
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if murano_class_ref.murano_class.is_compatible(p):
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return p
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p = p.owner
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return None
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@specs.parameter('seconds', yaqltypes.Number())
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def sleep_(seconds):
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eventlet.sleep(seconds)
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@specs.parameter('object_', dsl_types.MuranoObject)
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def type_(object_):
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return object_.type.name
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@specs.parameter('object_', dsl_types.MuranoObject)
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def name(object_):
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return object_.name
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@specs.parameter('obj', dsl_types.MuranoObject)
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@specs.parameter('property_name', yaqltypes.Keyword())
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@specs.name('#operator_.')
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def obj_attribution(context, obj, property_name):
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return obj.get_property(property_name, context)
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@specs.parameter('sender', dsl_types.MuranoObject)
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@specs.parameter('expr', yaqltypes.Lambda(method=True))
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@specs.inject('operator', yaqltypes.Super(with_context=True))
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@specs.name('#operator_.')
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def op_dot(context, sender, expr, operator):
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executor = helpers.get_executor(context)
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type_context = executor.context_manager.create_class_context(sender.type)
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obj_context = executor.context_manager.create_object_context(sender)
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ctx2 = linked_context.link(
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linked_context.link(context, type_context),
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obj_context)
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return operator(ctx2, sender, expr)
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@specs.parameter('prefix', yaqltypes.Keyword())
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@specs.parameter('name', yaqltypes.Keyword())
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@specs.name('#operator_:')
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def ns_resolve(context, prefix, name):
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murano_type = helpers.get_type(context)
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return dsl_types.MuranoClassReference(
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helpers.get_class(
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murano_type.namespace_resolver.resolve_name(
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prefix + ':' + name), context))
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@specs.parameter('obj1', dsl_types.MuranoObject, nullable=True)
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@specs.parameter('obj2', dsl_types.MuranoObject, nullable=True)
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@specs.name('*equal')
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def equal(obj1, obj2):
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return obj1 is obj2
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@specs.parameter('obj1', dsl_types.MuranoObject, nullable=True)
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@specs.parameter('obj2', dsl_types.MuranoObject, nullable=True)
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@specs.name('*not_equal')
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def not_equal(obj1, obj2):
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return obj1 is not obj2
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def register(context, runtime_version):
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context.register_function(cast)
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context.register_function(new)
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context.register_function(new_from_dict)
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context.register_function(id_)
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context.register_function(super_)
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context.register_function(psuper)
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context.register_function(require)
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context.register_function(find)
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context.register_function(sleep_)
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context.register_function(type_)
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context.register_function(name)
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context.register_function(obj_attribution)
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context.register_function(op_dot)
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context.register_function(ns_resolve)
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context.register_function(equal)
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context.register_function(not_equal)
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if runtime_version < constants.RUNTIME_VERSION_2_0:
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for t in ('id', 'cast', 'super', 'psuper', 'type'):
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for spec in utils.to_extension_method(t, context):
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context.register_function(spec)
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