diff options
Diffstat (limited to 'nfvparser/toscaparser/topology_template.py')
| -rw-r--r-- | nfvparser/toscaparser/topology_template.py | 310 |
1 files changed, 310 insertions, 0 deletions
diff --git a/nfvparser/toscaparser/topology_template.py b/nfvparser/toscaparser/topology_template.py new file mode 100644 index 0000000..4571fe7 --- /dev/null +++ b/nfvparser/toscaparser/topology_template.py @@ -0,0 +1,310 @@ +# 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 import exception +from toscaparser.dataentity import DataEntity +from toscaparser import functions +from toscaparser.groups import Group +from toscaparser.nodetemplate import NodeTemplate +from toscaparser.parameters import Input +from toscaparser.parameters import Output +from toscaparser.policy import Policy +from toscaparser.relationship_template import RelationshipTemplate +from toscaparser.substitution_mappings import SubstitutionMappings +from toscaparser.tpl_relationship_graph import ToscaGraph +from toscaparser.utils.gettextutils import _ + + +# Topology template key names +SECTIONS = (DESCRIPTION, INPUTS, NODE_TEMPLATES, + RELATIONSHIP_TEMPLATES, OUTPUTS, GROUPS, + SUBSTITUION_MAPPINGS, POLICIES) = \ + ('description', 'inputs', 'node_templates', + 'relationship_templates', 'outputs', 'groups', + 'substitution_mappings', 'policies') + +log = logging.getLogger("tosca.model") + + +class TopologyTemplate(object): + + '''Load the template data.''' + def __init__(self, template, custom_defs, + rel_types=None, parsed_params=None, + sub_mapped_node_template=None): + self.tpl = template + self.sub_mapped_node_template = sub_mapped_node_template + if self.tpl: + self.custom_defs = custom_defs + self.rel_types = rel_types + self.parsed_params = parsed_params + self._validate_field() + self.description = self._tpl_description() + self.inputs = self._inputs() + self.relationship_templates = self._relationship_templates() + self.nodetemplates = self._nodetemplates() + self.outputs = self._outputs() + if hasattr(self, 'nodetemplates'): + self.graph = ToscaGraph(self.nodetemplates) + self.groups = self._groups() + self.policies = self._policies() + self._process_intrinsic_functions() + self.substitution_mappings = self._substitution_mappings() + + def _inputs(self): + inputs = [] + for name, attrs in self._tpl_inputs().items(): + input = Input(name, attrs) + if self.parsed_params and name in self.parsed_params: + input.validate(self.parsed_params[name]) + else: + default = input.default + if default: + input.validate(default) + if (self.parsed_params and input.name not in self.parsed_params + or self.parsed_params is None) and input.required \ + and input.default is None: + exception.ExceptionCollector.appendException( + exception.MissingRequiredParameterError( + what='Template', + input_name=input.name)) + + inputs.append(input) + return inputs + + def _nodetemplates(self): + nodetemplates = [] + tpls = self._tpl_nodetemplates() + if tpls: + for name in tpls: + tpl = NodeTemplate(name, tpls, self.custom_defs, + self.relationship_templates, + self.rel_types) + if (tpl.type_definition and + (tpl.type in tpl.type_definition.TOSCA_DEF or + (tpl.type not in tpl.type_definition.TOSCA_DEF and + bool(tpl.custom_def)))): + tpl.validate(self) + nodetemplates.append(tpl) + return nodetemplates + + def _relationship_templates(self): + rel_templates = [] + tpls = self._tpl_relationship_templates() + for name in tpls: + tpl = RelationshipTemplate(tpls[name], name, self.custom_defs) + rel_templates.append(tpl) + return rel_templates + + def _outputs(self): + outputs = [] + for name, attrs in self._tpl_outputs().items(): + output = Output(name, attrs) + output.validate() + outputs.append(output) + return outputs + + def _substitution_mappings(self): + tpl_substitution_mapping = self._tpl_substitution_mappings() + # if tpl_substitution_mapping and self.sub_mapped_node_template: + if tpl_substitution_mapping: + return SubstitutionMappings(tpl_substitution_mapping, + self.nodetemplates, + self.inputs, + self.outputs, + self.sub_mapped_node_template, + self.custom_defs) + + def _policies(self): + policies = [] + for policy in self._tpl_policies(): + for policy_name, policy_tpl in policy.items(): + target_list = policy_tpl.get('targets') + target_objects = [] + targets_type = "groups" + if target_list and len(target_list) >= 1: + target_objects = self._get_policy_groups(target_list) + if not target_objects: + targets_type = "node_templates" + target_objects = self._get_group_members(target_list) + policyObj = Policy(policy_name, policy_tpl, + target_objects, targets_type, + self.custom_defs) + policies.append(policyObj) + return policies + + def _groups(self): + groups = [] + member_nodes = None + for group_name, group_tpl in self._tpl_groups().items(): + member_names = group_tpl.get('members') + if member_names is not None: + DataEntity.validate_datatype('list', member_names) + if len(member_names) < 1 or \ + len(member_names) != len(set(member_names)): + exception.ExceptionCollector.appendException( + exception.InvalidGroupTargetException( + message=_('Member nodes "%s" should be >= 1 ' + 'and not repeated') % member_names)) + else: + member_nodes = self._get_group_members(member_names) + group = Group(group_name, group_tpl, + member_nodes, + self.custom_defs) + groups.append(group) + return groups + + def _get_group_members(self, member_names): + member_nodes = [] + self._validate_group_members(member_names) + for member in member_names: + for node in self.nodetemplates: + if node.name == member: + member_nodes.append(node) + return member_nodes + + def _get_policy_groups(self, member_names): + member_groups = [] + for member in member_names: + for group in self.groups: + if group.name == member: + member_groups.append(group) + return member_groups + + def _validate_group_members(self, members): + node_names = [] + for node in self.nodetemplates: + node_names.append(node.name) + for member in members: + if member not in node_names: + exception.ExceptionCollector.appendException( + exception.InvalidGroupTargetException( + message=_('Target member "%s" is not found in ' + 'node_templates') % member)) + + # topology template can act like node template + # it is exposed by substitution_mappings. + def nodetype(self): + return self.substitution_mappings.node_type \ + if self.substitution_mappings else None + + def capabilities(self): + return self.substitution_mappings.capabilities \ + if self.substitution_mappings else None + + def requirements(self): + return self.substitution_mappings.requirements \ + if self.substitution_mappings else None + + def _tpl_description(self): + description = self.tpl.get(DESCRIPTION) + if description: + return description.rstrip() + + def _tpl_inputs(self): + return self.tpl.get(INPUTS) or {} + + def _tpl_nodetemplates(self): + return self.tpl.get(NODE_TEMPLATES) + + def _tpl_relationship_templates(self): + return self.tpl.get(RELATIONSHIP_TEMPLATES) or {} + + def _tpl_outputs(self): + return self.tpl.get(OUTPUTS) or {} + + def _tpl_substitution_mappings(self): + return self.tpl.get(SUBSTITUION_MAPPINGS) or {} + + def _tpl_groups(self): + return self.tpl.get(GROUPS) or {} + + def _tpl_policies(self): + return self.tpl.get(POLICIES) or {} + + def _validate_field(self): + for name in self.tpl: + if name not in SECTIONS: + exception.ExceptionCollector.appendException( + exception.UnknownFieldError(what='Template', field=name)) + + def _process_intrinsic_functions(self): + """Process intrinsic functions + + Current implementation processes functions within node template + properties, requirements, interfaces inputs and template outputs. + """ + if hasattr(self, 'nodetemplates'): + for node_template in self.nodetemplates: + for prop in node_template.get_properties_objects(): + prop.value = functions.get_function(self, + node_template, + prop.value) + for interface in node_template.interfaces: + if interface.inputs: + for name, value in interface.inputs.items(): + interface.inputs[name] = functions.get_function( + self, + node_template, + value) + if node_template.requirements and \ + isinstance(node_template.requirements, list): + for req in node_template.requirements: + rel = req + for req_name, req_item in req.items(): + if isinstance(req_item, dict): + rel = req_item.get('relationship') + break + if rel and 'properties' in rel: + for key, value in rel['properties'].items(): + rel['properties'][key] = \ + functions.get_function(self, + req, + value) + if node_template.get_capabilities_objects(): + for cap in node_template.get_capabilities_objects(): + if cap.get_properties_objects(): + for prop in cap.get_properties_objects(): + propvalue = functions.get_function( + self, + node_template, + prop.value) + if isinstance(propvalue, functions.GetInput): + propvalue = propvalue.result() + for p, v in cap._properties.items(): + if p == prop.name: + cap._properties[p] = propvalue + for rel, node in node_template.relationships.items(): + rel_tpls = node.relationship_tpl + if rel_tpls: + for rel_tpl in rel_tpls: + for interface in rel_tpl.interfaces: + if interface.inputs: + for name, value in \ + interface.inputs.items(): + interface.inputs[name] = \ + functions.get_function(self, + rel_tpl, + value) + for output in self.outputs: + func = functions.get_function(self, self.outputs, output.value) + if isinstance(func, functions.GetAttribute): + output.attrs[output.VALUE] = func + + @classmethod + def get_sub_mapping_node_type(cls, topology_tpl): + if topology_tpl and isinstance(topology_tpl, dict): + submap_tpl = topology_tpl.get(SUBSTITUION_MAPPINGS) + return SubstitutionMappings.get_node_type(submap_tpl) |