628 lines
22 KiB
Python
628 lines
22 KiB
Python
# 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 functools
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import six
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from heat.common import exception
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from heat.common.i18n import _
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from heat.engine.cfn import functions as cfn_funcs
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from heat.engine.cfn import template as cfn_template
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from heat.engine import function
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from heat.engine.hot import functions as hot_funcs
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from heat.engine.hot import parameters
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from heat.engine import rsrc_defn
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from heat.engine import template_common
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class HOTemplate20130523(template_common.CommonTemplate):
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"""A Heat Orchestration Template format stack template."""
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SECTIONS = (
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VERSION, DESCRIPTION, PARAMETER_GROUPS,
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PARAMETERS, RESOURCES, OUTPUTS, MAPPINGS,
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) = (
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'heat_template_version', 'description', 'parameter_groups',
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'parameters', 'resources', 'outputs', '__undefined__',
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)
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OUTPUT_KEYS = (
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OUTPUT_DESCRIPTION, OUTPUT_VALUE,
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) = (
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'description', 'value',
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)
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SECTIONS_NO_DIRECT_ACCESS = set([PARAMETERS, VERSION])
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_CFN_TO_HOT_SECTIONS = {cfn_template.CfnTemplate.VERSION: VERSION,
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cfn_template.CfnTemplate.DESCRIPTION: DESCRIPTION,
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cfn_template.CfnTemplate.PARAMETERS: PARAMETERS,
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cfn_template.CfnTemplate.MAPPINGS: MAPPINGS,
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cfn_template.CfnTemplate.RESOURCES: RESOURCES,
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cfn_template.CfnTemplate.OUTPUTS: OUTPUTS}
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_RESOURCE_KEYS = (
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RES_TYPE, RES_PROPERTIES, RES_METADATA, RES_DEPENDS_ON,
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RES_DELETION_POLICY, RES_UPDATE_POLICY, RES_DESCRIPTION,
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) = (
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'type', 'properties', 'metadata', 'depends_on',
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'deletion_policy', 'update_policy', 'description',
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)
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_RESOURCE_HOT_TO_CFN_ATTRS = {
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RES_TYPE: cfn_template.CfnTemplate.RES_TYPE,
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RES_PROPERTIES: cfn_template.CfnTemplate.RES_PROPERTIES,
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RES_METADATA: cfn_template.CfnTemplate.RES_METADATA,
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RES_DEPENDS_ON: cfn_template.CfnTemplate.RES_DEPENDS_ON,
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RES_DELETION_POLICY: cfn_template.CfnTemplate.RES_DELETION_POLICY,
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RES_UPDATE_POLICY: cfn_template.CfnTemplate.RES_UPDATE_POLICY,
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RES_DESCRIPTION: cfn_template.CfnTemplate.RES_DESCRIPTION}
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_HOT_TO_CFN_ATTRS = _RESOURCE_HOT_TO_CFN_ATTRS
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_HOT_TO_CFN_ATTRS.update(
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{OUTPUT_VALUE: cfn_template.CfnTemplate.OUTPUT_VALUE})
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functions = {
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'Fn::GetAZs': cfn_funcs.GetAZs,
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'get_param': hot_funcs.GetParam,
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'get_resource': hot_funcs.GetResource,
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'Ref': cfn_funcs.Ref,
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'get_attr': hot_funcs.GetAttThenSelect,
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'Fn::Select': cfn_funcs.Select,
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'Fn::Join': cfn_funcs.Join,
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'list_join': hot_funcs.Join,
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'Fn::Split': cfn_funcs.Split,
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'str_replace': hot_funcs.Replace,
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'Fn::Replace': cfn_funcs.Replace,
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'Fn::Base64': cfn_funcs.Base64,
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'Fn::MemberListToMap': cfn_funcs.MemberListToMap,
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'resource_facade': hot_funcs.ResourceFacade,
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'Fn::ResourceFacade': cfn_funcs.ResourceFacade,
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'get_file': hot_funcs.GetFile,
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}
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deletion_policies = {
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'Delete': rsrc_defn.ResourceDefinition.DELETE,
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'Retain': rsrc_defn.ResourceDefinition.RETAIN,
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'Snapshot': rsrc_defn.ResourceDefinition.SNAPSHOT
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}
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param_schema_class = parameters.HOTParamSchema
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def __getitem__(self, section):
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""""Get the relevant section in the template."""
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# first translate from CFN into HOT terminology if necessary
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if section not in self.SECTIONS:
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section = HOTemplate20130523._translate(
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section, self._CFN_TO_HOT_SECTIONS,
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_('"%s" is not a valid template section'))
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if section not in self.SECTIONS:
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raise KeyError(_('"%s" is not a valid template section') % section)
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if section in self.SECTIONS_NO_DIRECT_ACCESS:
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raise KeyError(
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_('Section %s can not be accessed directly.') % section)
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if section == self.MAPPINGS:
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return {}
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if section == self.DESCRIPTION:
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default = 'No description'
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else:
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default = {}
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# if a section is None (empty yaml section) return {}
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# to be consistent with an empty json section.
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the_section = self.t.get(section) or default
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# In some cases (e.g. parameters), also translate each entry of
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# a section into CFN format (case, naming, etc) so the rest of the
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# engine can cope with it.
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# This is a shortcut for now and might be changed in the future.
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if section == self.RESOURCES:
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return self._translate_resources(the_section)
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if section == self.OUTPUTS:
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self.validate_section(self.OUTPUTS, self.OUTPUT_VALUE,
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the_section, self.OUTPUT_KEYS)
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return the_section
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@staticmethod
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def _translate(value, mapping, err_msg=None):
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try:
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return mapping[value]
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except KeyError as ke:
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if err_msg:
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raise KeyError(err_msg % value)
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else:
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raise ke
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def validate_section(self, section, sub_section, data, allowed_keys):
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obj_name = section[:-1]
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err_msg = _('"%%s" is not a valid keyword inside a %s '
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'definition') % obj_name
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args = {'object_name': obj_name, 'sub_section': sub_section}
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message = _('Each %(object_name)s must contain a '
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'%(sub_section)s key.') % args
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for name, attrs in sorted(data.items()):
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if not attrs:
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raise exception.StackValidationFailed(message=message)
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try:
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for attr, attr_value in six.iteritems(attrs):
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if attr not in allowed_keys:
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raise KeyError(err_msg % attr)
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if sub_section not in attrs:
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raise exception.StackValidationFailed(message=message)
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except AttributeError:
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message = _('"%(section)s" must contain a map of '
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'%(obj_name)s maps. Found a [%(_type)s] '
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'instead') % {'section': section,
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'_type': type(attrs),
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'obj_name': obj_name}
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raise exception.StackValidationFailed(message=message)
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except KeyError as e:
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# an invalid keyword was found
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raise exception.StackValidationFailed(message=e.args[0])
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def _translate_section(self, section, sub_section, data, mapping):
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self.validate_section(section, sub_section, data, mapping)
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cfn_objects = {}
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for name, attrs in sorted(data.items()):
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cfn_object = {}
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for attr, attr_value in six.iteritems(attrs):
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cfn_attr = mapping[attr]
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if cfn_attr is not None:
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cfn_object[cfn_attr] = attr_value
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cfn_objects[name] = cfn_object
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return cfn_objects
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def _translate_resources(self, resources):
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"""Get the resources of the template translated into CFN format."""
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return self._translate_section(self.RESOURCES, self.RES_TYPE,
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resources,
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self._RESOURCE_HOT_TO_CFN_ATTRS)
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def get_section_name(self, section):
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cfn_to_hot_attrs = dict(
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zip(six.itervalues(self._HOT_TO_CFN_ATTRS),
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six.iterkeys(self._HOT_TO_CFN_ATTRS)))
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return cfn_to_hot_attrs.get(section, section)
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def param_schemata(self, param_defaults=None):
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parameter_section = self.t.get(self.PARAMETERS) or {}
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pdefaults = param_defaults or {}
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for name, schema in six.iteritems(parameter_section):
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if name in pdefaults:
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parameter_section[name]['default'] = pdefaults[name]
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params = six.iteritems(parameter_section)
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return dict((name, self.param_schema_class.from_dict(name, schema))
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for name, schema in params)
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def parameters(self, stack_identifier, user_params, param_defaults=None):
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return parameters.HOTParameters(stack_identifier, self,
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user_params=user_params,
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param_defaults=param_defaults)
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def resource_definitions(self, stack):
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resources = self.t.get(self.RESOURCES) or {}
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conditions = self.conditions(stack)
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valid_keys = frozenset(self._RESOURCE_KEYS)
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def defns():
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for name, snippet in six.iteritems(resources):
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try:
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invalid_keys = set(snippet) - valid_keys
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if invalid_keys:
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raise ValueError(_('Invalid keyword(s) inside a '
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'resource definition: '
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'%s') % ', '.join(invalid_keys))
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defn_data = dict(self._rsrc_defn_args(stack, name,
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snippet))
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except (TypeError, ValueError, KeyError) as ex:
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msg = six.text_type(ex)
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raise exception.StackValidationFailed(message=msg)
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defn = rsrc_defn.ResourceDefinition(name, **defn_data)
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cond_name = defn.condition()
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if cond_name is not None:
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try:
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enabled = conditions.is_enabled(cond_name)
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except ValueError as exc:
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path = [self.RESOURCES, name, self.RES_CONDITION]
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message = six.text_type(exc)
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raise exception.StackValidationFailed(path=path,
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message=message)
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if not enabled:
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continue
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yield name, defn
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return dict(defns())
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def add_resource(self, definition, name=None):
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if name is None:
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name = definition.name
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if self.t.get(self.RESOURCES) is None:
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self.t[self.RESOURCES] = {}
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self.t[self.RESOURCES][name] = definition.render_hot()
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def add_output(self, definition):
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if self.t.get(self.OUTPUTS) is None:
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self.t[self.OUTPUTS] = {}
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self.t[self.OUTPUTS][definition.name] = definition.render_hot()
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class HOTemplate20141016(HOTemplate20130523):
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functions = {
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'get_attr': hot_funcs.GetAtt,
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'get_file': hot_funcs.GetFile,
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'get_param': hot_funcs.GetParam,
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'get_resource': hot_funcs.GetResource,
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'list_join': hot_funcs.Join,
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'resource_facade': hot_funcs.ResourceFacade,
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'str_replace': hot_funcs.Replace,
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'Fn::Select': cfn_funcs.Select,
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# functions removed from 2014-10-16
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'Fn::GetAZs': hot_funcs.Removed,
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'Fn::Join': hot_funcs.Removed,
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'Fn::Split': hot_funcs.Removed,
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'Fn::Replace': hot_funcs.Removed,
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'Fn::Base64': hot_funcs.Removed,
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'Fn::MemberListToMap': hot_funcs.Removed,
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'Fn::ResourceFacade': hot_funcs.Removed,
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'Ref': hot_funcs.Removed,
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}
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class HOTemplate20150430(HOTemplate20141016):
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functions = {
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'get_attr': hot_funcs.GetAtt,
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'get_file': hot_funcs.GetFile,
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'get_param': hot_funcs.GetParam,
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'get_resource': hot_funcs.GetResource,
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'list_join': hot_funcs.Join,
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'repeat': hot_funcs.Repeat,
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'resource_facade': hot_funcs.ResourceFacade,
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'str_replace': hot_funcs.Replace,
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'Fn::Select': cfn_funcs.Select,
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# functions added in 2015-04-30
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'digest': hot_funcs.Digest,
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# functions removed from 2014-10-16
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'Fn::GetAZs': hot_funcs.Removed,
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'Fn::Join': hot_funcs.Removed,
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'Fn::Split': hot_funcs.Removed,
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'Fn::Replace': hot_funcs.Removed,
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'Fn::Base64': hot_funcs.Removed,
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'Fn::MemberListToMap': hot_funcs.Removed,
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'Fn::ResourceFacade': hot_funcs.Removed,
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'Ref': hot_funcs.Removed,
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}
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class HOTemplate20151015(HOTemplate20150430):
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functions = {
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'get_attr': hot_funcs.GetAttAllAttributes,
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'get_file': hot_funcs.GetFile,
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'get_param': hot_funcs.GetParam,
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'get_resource': hot_funcs.GetResource,
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'list_join': hot_funcs.JoinMultiple,
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'repeat': hot_funcs.Repeat,
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'resource_facade': hot_funcs.ResourceFacade,
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'str_replace': hot_funcs.ReplaceJson,
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# functions added in 2015-04-30
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'digest': hot_funcs.Digest,
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# functions added in 2015-10-15
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'str_split': hot_funcs.StrSplit,
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# functions removed from 2015-10-15
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'Fn::Select': hot_funcs.Removed,
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# functions removed from 2014-10-16
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'Fn::GetAZs': hot_funcs.Removed,
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'Fn::Join': hot_funcs.Removed,
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'Fn::Split': hot_funcs.Removed,
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'Fn::Replace': hot_funcs.Removed,
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'Fn::Base64': hot_funcs.Removed,
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'Fn::MemberListToMap': hot_funcs.Removed,
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'Fn::ResourceFacade': hot_funcs.Removed,
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'Ref': hot_funcs.Removed,
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}
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class HOTemplate20160408(HOTemplate20151015):
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functions = {
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'get_attr': hot_funcs.GetAttAllAttributes,
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'get_file': hot_funcs.GetFile,
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'get_param': hot_funcs.GetParam,
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'get_resource': hot_funcs.GetResource,
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'list_join': hot_funcs.JoinMultiple,
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'repeat': hot_funcs.Repeat,
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'resource_facade': hot_funcs.ResourceFacade,
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'str_replace': hot_funcs.ReplaceJson,
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# functions added in 2015-04-30
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'digest': hot_funcs.Digest,
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# functions added in 2015-10-15
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'str_split': hot_funcs.StrSplit,
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# functions added in 2016-04-08
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'map_merge': hot_funcs.MapMerge,
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# functions removed from 2015-10-15
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'Fn::Select': hot_funcs.Removed,
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# functions removed from 2014-10-16
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'Fn::GetAZs': hot_funcs.Removed,
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'Fn::Join': hot_funcs.Removed,
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'Fn::Split': hot_funcs.Removed,
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'Fn::Replace': hot_funcs.Removed,
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'Fn::Base64': hot_funcs.Removed,
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'Fn::MemberListToMap': hot_funcs.Removed,
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'Fn::ResourceFacade': hot_funcs.Removed,
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'Ref': hot_funcs.Removed,
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}
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class HOTemplate20161014(HOTemplate20160408):
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CONDITIONS = 'conditions'
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SECTIONS = HOTemplate20160408.SECTIONS + (CONDITIONS,)
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SECTIONS_NO_DIRECT_ACCESS = (HOTemplate20160408.SECTIONS_NO_DIRECT_ACCESS |
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set([CONDITIONS]))
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_CFN_TO_HOT_SECTIONS = HOTemplate20160408._CFN_TO_HOT_SECTIONS
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_CFN_TO_HOT_SECTIONS.update({
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cfn_template.CfnTemplate.CONDITIONS: CONDITIONS})
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_EXTRA_RES_KEYS = (
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RES_EXTERNAL_ID, RES_CONDITION
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) = (
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'external_id', 'condition'
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)
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_RESOURCE_KEYS = HOTemplate20160408._RESOURCE_KEYS + _EXTRA_RES_KEYS
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_RESOURCE_HOT_TO_CFN_ATTRS = HOTemplate20160408._RESOURCE_HOT_TO_CFN_ATTRS
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_RESOURCE_HOT_TO_CFN_ATTRS.update({
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RES_EXTERNAL_ID: None,
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RES_CONDITION: cfn_template.CfnTemplate.RES_CONDITION,
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})
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OUTPUT_CONDITION = 'condition'
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OUTPUT_KEYS = HOTemplate20160408.OUTPUT_KEYS + (OUTPUT_CONDITION,)
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deletion_policies = {
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'Delete': rsrc_defn.ResourceDefinition.DELETE,
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'Retain': rsrc_defn.ResourceDefinition.RETAIN,
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'Snapshot': rsrc_defn.ResourceDefinition.SNAPSHOT,
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# aliases added in 2016-10-14
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'delete': rsrc_defn.ResourceDefinition.DELETE,
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'retain': rsrc_defn.ResourceDefinition.RETAIN,
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'snapshot': rsrc_defn.ResourceDefinition.SNAPSHOT,
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}
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functions = {
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'get_attr': hot_funcs.GetAttAllAttributes,
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'get_file': hot_funcs.GetFile,
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'get_param': hot_funcs.GetParam,
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'get_resource': hot_funcs.GetResource,
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'list_join': hot_funcs.JoinMultiple,
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'repeat': hot_funcs.RepeatWithMap,
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'resource_facade': hot_funcs.ResourceFacade,
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'str_replace': hot_funcs.ReplaceJson,
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# functions added in 2015-04-30
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'digest': hot_funcs.Digest,
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# functions added in 2015-10-15
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'str_split': hot_funcs.StrSplit,
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# functions added in 2016-04-08
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'map_merge': hot_funcs.MapMerge,
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# functions added in 2016-10-14
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'yaql': hot_funcs.Yaql,
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'map_replace': hot_funcs.MapReplace,
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'if': hot_funcs.If,
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# functions removed from 2015-10-15
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'Fn::Select': hot_funcs.Removed,
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# functions removed from 2014-10-16
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'Fn::GetAZs': hot_funcs.Removed,
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'Fn::Join': hot_funcs.Removed,
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'Fn::Split': hot_funcs.Removed,
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'Fn::Replace': hot_funcs.Removed,
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'Fn::Base64': hot_funcs.Removed,
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'Fn::MemberListToMap': hot_funcs.Removed,
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'Fn::ResourceFacade': hot_funcs.Removed,
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'Ref': hot_funcs.Removed,
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}
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condition_functions = {
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'get_param': hot_funcs.GetParam,
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'equals': hot_funcs.Equals,
|
|
'not': hot_funcs.Not,
|
|
'and': hot_funcs.And,
|
|
'or': hot_funcs.Or
|
|
}
|
|
|
|
def __init__(self, tmpl, template_id=None, files=None, env=None):
|
|
super(HOTemplate20161014, self).__init__(
|
|
tmpl, template_id, files, env)
|
|
|
|
self._parser_condition_functions = {}
|
|
for n, f in six.iteritems(self.functions):
|
|
if not f == hot_funcs.Removed:
|
|
self._parser_condition_functions[n] = function.Invalid
|
|
else:
|
|
self._parser_condition_functions[n] = f
|
|
self._parser_condition_functions.update(self.condition_functions)
|
|
self.merge_sections = [self.PARAMETERS, self.CONDITIONS]
|
|
|
|
def _get_condition_definitions(self):
|
|
return self.t.get(self.CONDITIONS, {})
|
|
|
|
def _rsrc_defn_args(self, stack, name, data):
|
|
for arg in super(HOTemplate20161014, self)._rsrc_defn_args(stack,
|
|
name,
|
|
data):
|
|
yield arg
|
|
|
|
parse = functools.partial(self.parse, stack)
|
|
parse_cond = functools.partial(self.parse_condition, stack)
|
|
|
|
yield ('external_id',
|
|
self._parse_resource_field(self.RES_EXTERNAL_ID,
|
|
(six.string_types,
|
|
function.Function),
|
|
'string',
|
|
name, data, parse))
|
|
|
|
yield ('condition',
|
|
self._parse_resource_field(self.RES_CONDITION,
|
|
(six.string_types, bool,
|
|
function.Function),
|
|
'string_or_boolean',
|
|
name, data, parse_cond))
|
|
|
|
|
|
class HOTemplate20170224(HOTemplate20161014):
|
|
functions = {
|
|
'get_attr': hot_funcs.GetAttAllAttributes,
|
|
'get_file': hot_funcs.GetFile,
|
|
'get_param': hot_funcs.GetParam,
|
|
'get_resource': hot_funcs.GetResource,
|
|
'list_join': hot_funcs.JoinMultiple,
|
|
'repeat': hot_funcs.RepeatWithMap,
|
|
'resource_facade': hot_funcs.ResourceFacade,
|
|
'str_replace': hot_funcs.ReplaceJson,
|
|
|
|
# functions added in 2015-04-30
|
|
'digest': hot_funcs.Digest,
|
|
|
|
# functions added in 2015-10-15
|
|
'str_split': hot_funcs.StrSplit,
|
|
|
|
# functions added in 2016-04-08
|
|
'map_merge': hot_funcs.MapMerge,
|
|
|
|
# functions added in 2016-10-14
|
|
'yaql': hot_funcs.Yaql,
|
|
'map_replace': hot_funcs.MapReplace,
|
|
'if': hot_funcs.If,
|
|
|
|
# functions added in 2017-02-24
|
|
'filter': hot_funcs.Filter,
|
|
'str_replace_strict': hot_funcs.ReplaceJsonStrict,
|
|
|
|
# functions removed from 2015-10-15
|
|
'Fn::Select': hot_funcs.Removed,
|
|
|
|
# functions removed from 2014-10-16
|
|
'Fn::GetAZs': hot_funcs.Removed,
|
|
'Fn::Join': hot_funcs.Removed,
|
|
'Fn::Split': hot_funcs.Removed,
|
|
'Fn::Replace': hot_funcs.Removed,
|
|
'Fn::Base64': hot_funcs.Removed,
|
|
'Fn::MemberListToMap': hot_funcs.Removed,
|
|
'Fn::ResourceFacade': hot_funcs.Removed,
|
|
'Ref': hot_funcs.Removed,
|
|
}
|
|
|
|
param_schema_class = parameters.HOTParamSchema20170224
|
|
|
|
|
|
class HOTemplate20170901(HOTemplate20170224):
|
|
functions = {
|
|
'get_attr': hot_funcs.GetAttAllAttributes,
|
|
'get_file': hot_funcs.GetFile,
|
|
'get_param': hot_funcs.GetParam,
|
|
'get_resource': hot_funcs.GetResource,
|
|
'list_join': hot_funcs.JoinMultiple,
|
|
'repeat': hot_funcs.RepeatWithMap,
|
|
'resource_facade': hot_funcs.ResourceFacade,
|
|
'str_replace': hot_funcs.ReplaceJson,
|
|
|
|
# functions added in 2015-04-30
|
|
'digest': hot_funcs.Digest,
|
|
|
|
# functions added in 2015-10-15
|
|
'str_split': hot_funcs.StrSplit,
|
|
|
|
# functions added in 2016-04-08
|
|
'map_merge': hot_funcs.MapMerge,
|
|
|
|
# functions added in 2016-10-14
|
|
'yaql': hot_funcs.Yaql,
|
|
'map_replace': hot_funcs.MapReplace,
|
|
'if': hot_funcs.If,
|
|
|
|
# functions added in 2017-02-24
|
|
'filter': hot_funcs.Filter,
|
|
'str_replace_strict': hot_funcs.ReplaceJsonStrict,
|
|
|
|
# functions added in 2017-09-01
|
|
'make_url': hot_funcs.MakeURL,
|
|
'list_concat': hot_funcs.ListConcat,
|
|
'str_replace_vstrict': hot_funcs.ReplaceJsonVeryStrict,
|
|
'list_concat_unique': hot_funcs.ListConcatUnique,
|
|
'contains': hot_funcs.Contains,
|
|
|
|
# functions removed from 2015-10-15
|
|
'Fn::Select': hot_funcs.Removed,
|
|
|
|
# functions removed from 2014-10-16
|
|
'Fn::GetAZs': hot_funcs.Removed,
|
|
'Fn::Join': hot_funcs.Removed,
|
|
'Fn::Split': hot_funcs.Removed,
|
|
'Fn::Replace': hot_funcs.Removed,
|
|
'Fn::Base64': hot_funcs.Removed,
|
|
'Fn::MemberListToMap': hot_funcs.Removed,
|
|
'Fn::ResourceFacade': hot_funcs.Removed,
|
|
'Ref': hot_funcs.Removed,
|
|
}
|
|
|
|
condition_functions = {
|
|
'get_param': hot_funcs.GetParam,
|
|
'equals': hot_funcs.Equals,
|
|
'not': hot_funcs.Not,
|
|
'and': hot_funcs.And,
|
|
'or': hot_funcs.Or,
|
|
|
|
# functions added in 2017-09-01
|
|
'yaql': hot_funcs.Yaql,
|
|
'contains': hot_funcs.Contains
|
|
}
|