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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 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
import toscaparser.imports
from toscaparser.prereq.csar import CSAR
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, DATATYPE_DEFINITIONS) = \
('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', 'datatype_definitions')
# Special key names
SPECIAL_SECTIONS = (METADATA) = ('metadata')
log = logging.getLogger("tosca.model")
YAML_LOADER = toscaparser.utils.yamlparser.load_yaml
class ToscaTemplate(object):
VALID_TEMPLATE_VERSIONS = ['tosca_simple_yaml_1_0']
'''Load the template data.'''
def __init__(self, path, parsed_params=None, a_file=True):
ExceptionCollector.start()
self.a_file = a_file
self.input_path = path
self.path = self._get_path(path)
if self.path:
self.tpl = YAML_LOADER(self.path, self.a_file)
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()
if self.topology_template.tpl:
self.inputs = self._inputs()
self.relationship_templates = self._relationship_templates()
self.nodetemplates = self._nodetemplates()
self.outputs = self._outputs()
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)
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_relationship_types(self):
return self._get_custom_types(RELATIONSHIP_TYPES)
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 _get_all_custom_defs(self, imports=None):
types = [IMPORTS, NODE_TYPES, CAPABILITY_TYPES, RELATIONSHIP_TYPES,
DATATYPE_DEFINITIONS]
custom_defs_final = {}
custom_defs = self._get_custom_types(types, imports)
if custom_defs:
custom_defs_final.update(custom_defs)
if custom_defs.get(IMPORTS):
import_defs = self._get_all_custom_defs(
custom_defs.get(IMPORTS))
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):
"""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 = {}
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 imports:
custom_defs = toscaparser.imports.\
ImportsLoader(imports, self.path,
type_defs).get_custom_defs()
if not custom_defs:
return
# 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
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 SPECIAL_SECTIONS:
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)))
def _get_path(self, path):
if path.lower().endswith('.yaml'):
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():
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:
msg = (_('The input "%(path)s" successfully passed validation.') %
{'path': self.input_path})
log.info(msg)
print(msg)
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