openstack/tosca-parser
Code Issues Proposed changes
0501264fa0
tosca-parser/toscaparser/tosca_template.py
Ayumu Ueha 7f675dec21 Enable store multi flavour in nested topo template 
If user tries to load CSAR file with multiple flavours (eg: simple,
complex) of VNFD, it only stores one object in
nested_tosca_templates_with_topology.

This patch fixes the issue for load VNFD that has multiple deployment
flavours.

Change-Id: I490b2189fd594f1acceb931215f8a665c758441c
Closes-Bug: 1883220
2020-08-19 02:09:53 +00:00

362 lines
15 KiB
Python
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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
import os
from copy import deepcopy
from toscaparser.common.exception import ExceptionCollector
from toscaparser.common.exception import InvalidTemplateVersion
from toscaparser.common.exception import MissingRequiredFieldError
from toscaparser.common.exception import UnknownFieldError
from toscaparser.common.exception import ValidationError
from toscaparser.elements.entity_type import update_definitions
from toscaparser.extensions.exttools import ExtTools
import toscaparser.imports
from toscaparser.prereq.csar import CSAR
from toscaparser.repositories import Repository
from toscaparser.topology_template import TopologyTemplate
from toscaparser.tpl_relationship_graph import ToscaGraph
from toscaparser.utils.gettextutils import _
import toscaparser.utils.yamlparser
# TOSCA template key names
SECTIONS = (DEFINITION_VERSION, DEFAULT_NAMESPACE, TEMPLATE_NAME,
TOPOLOGY_TEMPLATE, TEMPLATE_AUTHOR, TEMPLATE_VERSION,
DESCRIPTION, IMPORTS, DSL_DEFINITIONS, NODE_TYPES,
RELATIONSHIP_TYPES, RELATIONSHIP_TEMPLATES,
CAPABILITY_TYPES, ARTIFACT_TYPES, DATA_TYPES, INTERFACE_TYPES,
POLICY_TYPES, GROUP_TYPES, REPOSITORIES) = \
('tosca_definitions_version', 'tosca_default_namespace',
'template_name', 'topology_template', 'template_author',
'template_version', 'description', 'imports', 'dsl_definitions',
'node_types', 'relationship_types', 'relationship_templates',
'capability_types', 'artifact_types', 'data_types',
'interface_types', 'policy_types', 'group_types', 'repositories')
# Sections that are specific to individual template definitions
SPECIAL_SECTIONS = (METADATA) = ('metadata')
log = logging.getLogger("tosca.model")
YAML_LOADER = toscaparser.utils.yamlparser.load_yaml
class ToscaTemplate(object):
exttools = ExtTools()
MAIN_TEMPLATE_VERSIONS = ['tosca_simple_yaml_1_0',
'tosca_simple_yaml_1_2']
VALID_TEMPLATE_VERSIONS = MAIN_TEMPLATE_VERSIONS + exttools.get_versions()
ADDITIONAL_SECTIONS = {'tosca_simple_yaml_1_0': SPECIAL_SECTIONS,
'tosca_simple_yaml_1_2': SPECIAL_SECTIONS}
ADDITIONAL_SECTIONS.update(exttools.get_sections())
'''Load the template data.'''
def __init__(self, path=None, parsed_params=None, a_file=True,
yaml_dict_tpl=None):
ExceptionCollector.start()
self.a_file = a_file
self.input_path = None
self.path = None
self.tpl = None
self.nested_tosca_tpls_with_topology = {}
self.nested_tosca_templates_with_topology = []
if path:
self.input_path = path
self.path = self._get_path(path)
if self.path:
self.tpl = YAML_LOADER(self.path, self.a_file)
if yaml_dict_tpl:
msg = (_('Both path and yaml_dict_tpl arguments were '
'provided. Using path and ignoring yaml_dict_tpl.'))
log.info(msg)
print(msg)
else:
if yaml_dict_tpl:
self.tpl = yaml_dict_tpl
else:
ExceptionCollector.appendException(
ValueError(_('No path or yaml_dict_tpl was provided. '
'There is nothing to parse.')))
if self.tpl:
self.parsed_params = parsed_params
self._validate_field()
self.version = self._tpl_version()
self.relationship_types = self._tpl_relationship_types()
self.description = self._tpl_description()
self.topology_template = self._topology_template()
self.repositories = self._tpl_repositories()
if self.topology_template.tpl:
self.inputs = self._inputs()
self.relationship_templates = self._relationship_templates()
self.nodetemplates = self._nodetemplates()
self.outputs = self._outputs()
self.policies = self._policies()
self._handle_nested_tosca_templates_with_topology()
self.graph = ToscaGraph(self.nodetemplates)
ExceptionCollector.stop()
self.verify_template()
def _topology_template(self):
return TopologyTemplate(self._tpl_topology_template(),
self._get_all_custom_defs(),
self.relationship_types,
self.parsed_params,
None)
def _inputs(self):
return self.topology_template.inputs
def _nodetemplates(self):
return self.topology_template.nodetemplates
def _relationship_templates(self):
return self.topology_template.relationship_templates
def _outputs(self):
return self.topology_template.outputs
def _tpl_version(self):
return self.tpl.get(DEFINITION_VERSION)
def _tpl_description(self):
desc = self.tpl.get(DESCRIPTION)
if desc:
return desc.rstrip()
def _tpl_imports(self):
return self.tpl.get(IMPORTS)
def _tpl_repositories(self):
repositories = self.tpl.get(REPOSITORIES)
reposit = []
if repositories:
for name, val in repositories.items():
reposits = Repository(name, val)
reposit.append(reposits)
return reposit
def _tpl_relationship_types(self):
custom_rel, _ = self._get_custom_types(RELATIONSHIP_TYPES)
return custom_rel
def _tpl_relationship_templates(self):
topology_template = self._tpl_topology_template()
return topology_template.get(RELATIONSHIP_TEMPLATES)
def _tpl_topology_template(self):
return self.tpl.get(TOPOLOGY_TEMPLATE)
def _policies(self):
return self.topology_template.policies
def _get_all_custom_defs(self, imports=None, path=None):
types = [IMPORTS, NODE_TYPES, CAPABILITY_TYPES, RELATIONSHIP_TYPES,
DATA_TYPES, INTERFACE_TYPES, POLICY_TYPES, GROUP_TYPES]
custom_defs_final = {}
custom_defs, nested_imports = self._get_custom_types(
types, imports, path)
if custom_defs:
custom_defs_final.update(custom_defs)
if nested_imports:
for a_file, nested_import in nested_imports.items():
import_defs = self._get_all_custom_defs(
nested_import, a_file)
custom_defs_final.update(import_defs)
# As imports are not custom_types, removing from the dict
custom_defs_final.pop(IMPORTS, None)
return custom_defs_final
def _get_custom_types(self, type_definitions, imports=None,
path=None):
"""Handle custom types defined in imported template files
This method loads the custom type definitions referenced in "imports"
section of the TOSCA YAML template.
"""
custom_defs = {}
nested_imports = None
type_defs = []
if not isinstance(type_definitions, list):
type_defs.append(type_definitions)
else:
type_defs = type_definitions
if not imports:
imports = self._tpl_imports()
if not path:
path = self.path
if imports:
custom_service = toscaparser.imports.\
ImportsLoader(imports, path, type_defs, self.tpl)
nested_tosca_tpls = custom_service.get_nested_tosca_tpls()
self._update_nested_tosca_tpls_with_topology(nested_tosca_tpls)
nested_imports = custom_service.get_nested_imports()
custom_defs = custom_service.get_custom_defs()
if not custom_defs:
return None, None
# Handle custom types defined in current template file
for type_def in type_defs:
if type_def != IMPORTS:
inner_custom_types = self.tpl.get(type_def) or {}
if inner_custom_types:
custom_defs.update(inner_custom_types)
return custom_defs, nested_imports
def _update_nested_tosca_tpls_with_topology(self, nested_tosca_tpls):
for tpl in nested_tosca_tpls:
filename, tosca_tpl = list(tpl.items())[0]
if (tosca_tpl.get(TOPOLOGY_TEMPLATE) and
filename not in list(
self.nested_tosca_tpls_with_topology.keys())):
self.nested_tosca_tpls_with_topology.update(tpl)
def _handle_nested_tosca_templates_with_topology(self):
for fname, tosca_tpl in self.nested_tosca_tpls_with_topology.items():
for nodetemplate in self.nodetemplates:
if self._is_sub_mapped_node(nodetemplate, tosca_tpl):
parsed_params = self._get_params_for_nested_template(
nodetemplate)
topology_tpl = tosca_tpl.get(TOPOLOGY_TEMPLATE)
topology_with_sub_mapping = TopologyTemplate(
topology_tpl,
self._get_all_custom_defs(),
self.relationship_types,
parsed_params,
nodetemplate)
if topology_with_sub_mapping.substitution_mappings:
# Record nested topo templates in top level template
self.nested_tosca_templates_with_topology.\
append(topology_with_sub_mapping)
# Set substitution mapping object for mapped node
nodetemplate.sub_mapping_tosca_template = \
topology_with_sub_mapping.substitution_mappings
def _validate_field(self):
version = self._tpl_version()
if not version:
ExceptionCollector.appendException(
MissingRequiredFieldError(what='Template',
required=DEFINITION_VERSION))
else:
self._validate_version(version)
self.version = version
for name in self.tpl:
if (name not in SECTIONS and
name not in self.ADDITIONAL_SECTIONS.get(version, ())):
ExceptionCollector.appendException(
UnknownFieldError(what='Template', field=name))
def _validate_version(self, version):
if version not in self.VALID_TEMPLATE_VERSIONS:
ExceptionCollector.appendException(
InvalidTemplateVersion(
what=version,
valid_versions='", "'. join(self.VALID_TEMPLATE_VERSIONS)))
else:
if version not in self.MAIN_TEMPLATE_VERSIONS:
update_definitions(version)
def _get_path(self, path):
if path.lower().endswith('.yaml') or path.lower().endswith('.yml'):
return path
elif path.lower().endswith(('.zip', '.csar')):
# a CSAR archive
csar = CSAR(path, self.a_file)
if csar.validate():
csar.decompress()
self.a_file = True # the file has been decompressed locally
return os.path.join(csar.temp_dir, csar.get_main_template())
else:
ExceptionCollector.appendException(
ValueError(_('"%(path)s" is not a valid file.')
% {'path': path}))
def verify_template(self):
if ExceptionCollector.exceptionsCaught():
if self.input_path:
raise ValidationError(
message=(_('\nThe input "%(path)s" failed validation with '
'the following error(s): \n\n\t')
% {'path': self.input_path}) +
'\n\t'.join(ExceptionCollector.getExceptionsReport()))
else:
raise ValidationError(
message=_('\nThe pre-parsed input failed validation with '
'the following error(s): \n\n\t') +
'\n\t'.join(ExceptionCollector.getExceptionsReport()))
else:
if self.input_path:
msg = (_('The input "%(path)s" successfully passed '
'validation.') % {'path': self.input_path})
else:
msg = _('The pre-parsed input successfully passed validation.')
log.info(msg)
def _is_sub_mapped_node(self, nodetemplate, tosca_tpl):
"""Return True if the nodetemple is substituted."""
# NOTE(ueha): Since condition "not nodetemplate.sub_mapping_tosca_\
# template" was deleted as a fix for bug/1883220, there is
# some possibility of breaking something on translator side
# that current tests not coverd.
# And this enhancement does not align with TOSCA standard
# but needed for ETSI NFV-SOL 001.
if (nodetemplate and
self.get_sub_mapping_node_type(tosca_tpl) == nodetemplate.type
and len(nodetemplate.interfaces) < 1):
return True
else:
return False
def _get_params_for_nested_template(self, nodetemplate):
"""Return total params for nested_template."""
parsed_params = deepcopy(self.parsed_params) \
if self.parsed_params else {}
if nodetemplate:
for pname in nodetemplate.get_properties():
parsed_params.update({pname:
nodetemplate.get_property_value(pname)})
return parsed_params
def get_sub_mapping_node_type(self, tosca_tpl):
"""Return substitution mappings node type."""
if tosca_tpl:
return TopologyTemplate.get_sub_mapping_node_type(
tosca_tpl.get(TOPOLOGY_TEMPLATE))
def _has_substitution_mappings(self):
"""Return True if the template has valid substitution mappings."""
return self.topology_template is not None and \
self.topology_template.substitution_mappings is not None
def has_nested_templates(self):
"""Return True if the tosca template has nested templates."""
return self.nested_tosca_templates_with_topology is not None and \
len(self.nested_tosca_templates_with_topology) >= 1
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