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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 InvalidPropertyValueError
from toscaparser.common.exception import MissingRequiredFieldError
from toscaparser.common.exception import TypeMismatchError
from toscaparser.common.exception import UnknownFieldError
from toscaparser.common.exception import ValidationError
from toscaparser.dataentity import DataEntity
from toscaparser.elements.interfaces import CONFIGURE
from toscaparser.elements.interfaces import CONFIGURE_SHORTNAME
from toscaparser.elements.interfaces import InterfacesDef
from toscaparser.elements.interfaces import LIFECYCLE
from toscaparser.elements.interfaces import LIFECYCLE_SHORTNAME
from toscaparser.elements.relationshiptype import RelationshipType
from toscaparser.entity_template import EntityTemplate
from toscaparser.relationship_template import RelationshipTemplate
from toscaparser.utils.gettextutils import _
log = logging.getLogger('tosca')
class NodeTemplate(EntityTemplate):
'''Node template from a Tosca profile.'''
def __init__(self, name, node_templates, custom_def=None,
available_rel_tpls=None, available_rel_types=None):
super(NodeTemplate, self).__init__(name, node_templates[name],
'node_type',
custom_def)
self.templates = node_templates
self._validate_fields(node_templates[name])
self.custom_def = custom_def
self.related = {}
self.relationship_tpl = []
self.available_rel_tpls = available_rel_tpls
self.available_rel_types = available_rel_types
self._relationships = {}
self.substitution_mapped = False
@property
def relationships(self):
if not self._relationships:
requires = self.requirements
if requires:
for r in requires:
for r1, value in r.items():
explicit = self._get_explicit_relationship(r, value)
if explicit:
for key, value in explicit.items():
self._relationships[key] = value
return self._relationships
def _get_explicit_relationship(self, req, value):
"""Handle explicit relationship
For example,
- req:
node: DBMS
relationship: tosca.relationships.HostedOn
"""
explicit_relation = {}
node = value.get('node') if isinstance(value, dict) else value
if node:
# TODO(spzala) implement look up once Glance meta data is available
# to find a matching TOSCA node using the TOSCA types
msg = _('Lookup by TOSCA types is not supported. '
'Requirement for "%s" can not be full-filled.') % self.name
if (node in list(self.type_definition.TOSCA_DEF.keys())
or node in self.custom_def):
ExceptionCollector.appendException(NotImplementedError(msg))
return
if node not in self.templates:
ExceptionCollector.appendException(
KeyError(_('Node template "%s" was not found.') % node))
return
related_tpl = NodeTemplate(node, self.templates, self.custom_def)
relationship = value.get('relationship') \
if isinstance(value, dict) else None
# check if it's type has relationship defined
if not relationship:
parent_reqs = self.type_definition.get_all_requirements()
if parent_reqs is None:
ExceptionCollector.appendException(
ValidationError(message='parent_req is ' +
str(parent_reqs)))
else:
for key in req.keys():
for req_dict in parent_reqs:
if key in req_dict.keys():
relationship = (req_dict.get(key).
get('relationship'))
break
if relationship:
found_relationship_tpl = False
# apply available relationship templates if found
if self.available_rel_tpls:
for tpl in self.available_rel_tpls:
if tpl.name == relationship:
rtype = RelationshipType(tpl.type, None,
self.custom_def)
explicit_relation[rtype] = related_tpl
tpl.target = related_tpl
tpl.source = self
self.relationship_tpl.append(tpl)
found_relationship_tpl = True
# create relationship template object.
rel_prfx = self.type_definition.RELATIONSHIP_PREFIX
if not found_relationship_tpl:
if isinstance(relationship, dict):
relationship = relationship.get('type')
if relationship:
if self.available_rel_types and \
relationship in self.available_rel_types.keys():
pass
elif not relationship.startswith(rel_prfx):
relationship = rel_prfx + relationship
else:
ExceptionCollector.appendException(
MissingRequiredFieldError(
what=_('"relationship" used in template '
'"%s"') % related_tpl.name,
required=self.TYPE))
for rtype in self.type_definition.relationship.keys():
if rtype.type == relationship:
explicit_relation[rtype] = related_tpl
related_tpl._add_relationship_template(req,
rtype.type,
self)
elif self.available_rel_types:
if relationship in self.available_rel_types.keys():
rel_type_def = self.available_rel_types.\
get(relationship)
if 'derived_from' in rel_type_def:
super_type = \
rel_type_def.get('derived_from')
if not super_type.startswith(rel_prfx):
super_type = rel_prfx + super_type
if rtype.type == super_type:
explicit_relation[rtype] = related_tpl
related_tpl.\
_add_relationship_template(
req, rtype.type, self)
return explicit_relation
def _add_relationship_template(self, requirement, rtype, source):
req = requirement.copy()
req['type'] = rtype
tpl = RelationshipTemplate(req, rtype, self.custom_def, self, source)
self.relationship_tpl.append(tpl)
def get_relationship_template(self):
return self.relationship_tpl
def _add_next(self, nodetpl, relationship):
self.related[nodetpl] = relationship
@property
def related_nodes(self):
if not self.related:
for relation, node in self.type_definition.relationship.items():
for tpl in self.templates:
if tpl == node.type:
self.related[NodeTemplate(tpl)] = relation
return self.related.keys()
def validate(self, tosca_tpl=None):
self._validate_capabilities()
self._validate_requirements()
self._validate_properties(self.entity_tpl, self.type_definition)
self._validate_interfaces()
for prop in self.get_properties_objects():
prop.validate()
def _validate_requirements(self):
type_requires = self.type_definition.get_all_requirements()
allowed_reqs = ["template"]
if type_requires:
for treq in type_requires:
for key, value in treq.items():
allowed_reqs.append(key)
if isinstance(value, dict):
for key in value:
allowed_reqs.append(key)
requires = self.type_definition.get_value(self.REQUIREMENTS,
self.entity_tpl)
if requires:
if not isinstance(requires, list):
ExceptionCollector.appendException(
TypeMismatchError(
what='"requirements" of template "%s"' % self.name,
type='list'))
for req in requires:
for r1, value in req.items():
if isinstance(value, dict):
self._validate_requirements_keys(value)
self._validate_requirements_properties(value)
allowed_reqs.append(r1)
self._common_validate_field(req, allowed_reqs, 'requirements')
def _validate_requirements_properties(self, requirements):
# TODO(anyone): Only occurrences property of the requirements is
# validated here. Validation of other requirement properties are being
# validated in different files. Better to keep all the requirements
# properties validation here.
for key, value in requirements.items():
if key == 'occurrences':
self._validate_occurrences(value)
break
def _validate_occurrences(self, occurrences):
DataEntity.validate_datatype('list', occurrences)
for value in occurrences:
DataEntity.validate_datatype('integer', value)
if len(occurrences) != 2 or not (0 <= occurrences[0] <= occurrences[1]) \
or occurrences[1] == 0:
ExceptionCollector.appendException(
InvalidPropertyValueError(what=(occurrences)))
def _validate_requirements_keys(self, requirement):
for key in requirement.keys():
if key not in self.REQUIREMENTS_SECTION:
ExceptionCollector.appendException(
UnknownFieldError(
what='"requirements" of template "%s"' % self.name,
field=key))
def _validate_interfaces(self):
ifaces = self.type_definition.get_value(self.INTERFACES,
self.entity_tpl)
if ifaces:
for i in ifaces:
for name, value in ifaces.items():
if name in (LIFECYCLE, LIFECYCLE_SHORTNAME):
self._common_validate_field(
value, InterfacesDef.
interfaces_node_lifecycle_operations,
'interfaces')
elif name in (CONFIGURE, CONFIGURE_SHORTNAME):
self._common_validate_field(
value, InterfacesDef.
interfaces_relationship_configure_operations,
'interfaces')
else:
ExceptionCollector.appendException(
UnknownFieldError(
what='"interfaces" of template "%s"' %
self.name, field=name))
def _validate_fields(self, nodetemplate):
for name in nodetemplate.keys():
if name not in self.SECTIONS and name not in self.SPECIAL_SECTIONS:
ExceptionCollector.appendException(
UnknownFieldError(what='Node template "%s"' % self.name,
field=name))
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