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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.
import logging
from toscaparser.common.exception import ExceptionCollector
from toscaparser.common.exception import InvalidNodeTypeError
from toscaparser.common.exception import MissingRequiredFieldError
from toscaparser.common.exception import MissingRequiredInputError
from toscaparser.common.exception import MissingRequiredParameterError
from toscaparser.common.exception import UnknownFieldError
from toscaparser.elements.nodetype import NodeType
log = logging.getLogger('tosca')
class SubstitutionMappings(object):
'''SubstitutionMappings class declaration
Substitution_mappings exports the topology template as an
implementation of a Node type.
'''
SECTIONS = (NODE_TYPE, REQUIREMENTS, CAPABILITIES) = \
('node_type', 'requirements', 'capabilities')
def __init__(self, sub_mapping_def, nodetemplates, inputs, outputs,
sub_mapped_node_template, custom_defs):
self.nodetemplates = nodetemplates
self.sub_mapping_def = sub_mapping_def
self.inputs = inputs or []
self.outputs = outputs or []
self.sub_mapped_node_template = sub_mapped_node_template
self.custom_defs = custom_defs or {}
self._validate()
self._capabilities = None
self._requirements = None
@classmethod
def get_node_type(cls, sub_mapping_def):
if isinstance(sub_mapping_def, dict):
return sub_mapping_def.get(cls.NODE_TYPE)
@property
def node_type(self):
return self.sub_mapping_def.get(self.NODE_TYPE)
@property
def capabilities(self):
return self.sub_mapping_def.get(self.CAPABILITIES)
@property
def requirements(self):
return self.sub_mapping_def.get(self.REQUIREMENTS)
@property
def node_definition(self):
return NodeType(self.node_type, self.custom_defs)
def _validate(self):
# basic valiation
self._validate_keys()
self._validate_type()
# SubstitutionMapping class syntax validation
self._validate_inputs()
self._validate_capabilities()
self._validate_requirements()
self._validate_outputs()
def _validate_keys(self):
"""validate the keys of substitution mappings."""
for key in self.sub_mapping_def.keys():
if key not in self.SECTIONS:
ExceptionCollector.appendException(
UnknownFieldError(what='SubstitutionMappings',
field=key))
def _validate_type(self):
"""validate the node_type of substitution mappings."""
node_type = self.sub_mapping_def.get(self.NODE_TYPE)
if not node_type:
ExceptionCollector.appendException(
MissingRequiredFieldError(
what=_('SubstitutionMappings used in topology_template'),
required=self.NODE_TYPE))
node_type_def = self.custom_defs.get(node_type)
if not node_type_def:
ExceptionCollector.appendException(
InvalidNodeTypeError(what=node_type_def))
def _validate_inputs(self):
"""validate the inputs of substitution mappings.
The inputs in service template which provides substutition mappings
must be in properties of node template which is mapped or provide
defualt value. Currently the input.name is not restrict to be the
same as property name in specification, but they should be equal
for current implementation.
"""
# Must provide parameters for required properties of node_type
# This checking is internal(inside SubstitutionMappings)
for propery in self.node_definition.get_properties_def_objects():
# Check property which is 'required' and has no 'default' value
if propery.required and propery.default is None and \
propery.name not in [input.name for input in self.inputs]:
ExceptionCollector.appendException(
MissingRequiredInputError(
what='SubstitutionMappings with node_type:'
+ self.node_type,
input_name=propery.name))
# Get property names from substituted node tempalte
property_names = list(self.sub_mapped_node_template
.get_properties().keys()
if self.sub_mapped_node_template else [])
# Sub_mapped_node_template is None(deploy standaolone), will check
# according to node_type
if 0 == len(property_names):
property_names = list(self.node_definition
.get_properties_def().keys())
# Provide default value for parameter which is not property of
# node with the type node_type, this may not be mandatory for
# current implematation, but the specification express it mandatory.
# This checking is external(outside SubstitutionMappings)
for input in self.inputs:
if input.name not in property_names and input.default is None:
ExceptionCollector.appendException(
MissingRequiredParameterError(
what='SubstitutionMappings with node_type:'
+ self.node_type,
input_name=input.name))
def _validate_capabilities(self):
"""validate the capabilities of substitution mappings."""
# The capabilites must be in node template wchich be mapped.
tpls_capabilities = self.sub_mapping_def.get(self.CAPABILITIES)
node_capabiliteys = self.sub_mapped_node_template.get_capabilities() \
if self.sub_mapped_node_template else None
for cap in node_capabiliteys.keys() if node_capabiliteys else []:
if (tpls_capabilities and
cap not in list(tpls_capabilities.keys())):
pass
# ExceptionCollector.appendException(
# UnknownFieldError(what='SubstitutionMappings',
# field=cap))
def _validate_requirements(self):
"""validate the requirements of substitution mappings."""
# The requirements must be in node template wchich be mapped.
tpls_requirements = self.sub_mapping_def.get(self.REQUIREMENTS)
node_requirements = self.sub_mapped_node_template.requirements \
if self.sub_mapped_node_template else None
for req in node_requirements if node_requirements else []:
if (tpls_requirements and
req not in list(tpls_requirements.keys())):
pass
# ExceptionCollector.appendException(
# UnknownFieldError(what='SubstitutionMappings',
# field=req))
def _validate_outputs(self):
"""validate the outputs of substitution mappings."""
pass
# The outputs in service template which defines substutition mappings
# must be in atrributes of node template wchich be mapped.
# outputs_names = self.sub_mapped_node_template.get_properties().
# keys() if self.sub_mapped_node_template else None
# for name in outputs_names:
# if name not in [output.name for input in self.outputs]:
# ExceptionCollector.appendException(
# UnknownFieldError(what='SubstitutionMappings',
# field=name))
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