def _check_item_type(self, item):
if not isinstance(item, self.ALLOWED_ITEM_TYPES):
raise exc.InvalidArtifactTypePropertyDefinition(
_('Invalid item type specification'))
if item.default is not None:
raise exc.InvalidArtifactTypePropertyDefinition(
_('List definitions may hot have defaults'))
def __init__(self, type_name=None, type_version=None, **kwargs):
"""Defines an artifact reference
:param type_name: type name of the target artifact
:param type_version: type version of the target artifact
"""
super(ArtifactReference, self).__init__(**kwargs)
if type_name is not None:
if isinstance(type_name, list):
type_names = list(type_name)
if type_version is not None:
raise exc.InvalidArtifactTypePropertyDefinition(
_('Unable to specify version '
'if multiple types are possible'))
else:
type_names = [type_name]
def validate_reference(artifact):
if artifact.type_name not in type_names:
return False
if (type_version is not None and
artifact.type_version != type_version):
return False
return True
self._add_validator('referenced_type',
validate_reference,
_("Invalid referenced type"))
elif type_version is not None:
raise exc.InvalidArtifactTypePropertyDefinition(
_('Unable to specify version '
'if type is not specified'))
self._check_definition()
def __init__(self,
item_type=String(),
min_size=0,
max_size=None,
unique=False,
extra_items=True,
**kwargs):
"""Defines an Array metadata property
:param item_type: defines the types of elements in Array. If set to an
instance of PropertyDefinition then all the elements have to be of that
type. If set to list of such instances, then the elements on the
corresponding positions have to be of the appropriate type.
:param min_size: minimum size of the Array
:param max_size: maximum size of the Array
:param unique: if set to true, all the elements in the Array have to be
unique
"""
if isinstance(item_type, Array):
msg = _("Array property can't have item_type=Array")
raise exc.InvalidArtifactTypePropertyDefinition(msg)
declarative.ListAttributeDefinition.__init__(self,
item_type=item_type,
min_size=min_size,
max_size=max_size,
unique=unique)
declarative.PropertyDefinition.__init__(self, **kwargs)
def _validate_default(self):
if self.default:
try:
self.validate(self.default, 'default')
except exc.InvalidArtifactPropertyValue:
raise exc.InvalidArtifactTypePropertyDefinition(
_("Default value is invalid"))
def __init__(self,
internal=False,
allowed_values=None,
validators=None,
**kwargs):
"""Defines a metadata property
:param internal: a flag indicating that the property is internal, i.e.
not returned to client
:param allowed_values: specifies a list of values allowed for the
property
:param validators: specifies a list of custom validators for the
property
"""
super(PropertyDefinition, self).__init__(**kwargs)
self.internal = internal
self._allowed_values = None
if validators is not None:
try:
for i, (f, m) in enumerate(validators):
self._add_validator("custom_%i" % i, f, m)
except ValueError:
raise exc.InvalidArtifactTypePropertyDefinition(
_("Custom validators list should contain tuples "
"'(function, message)'"))
if allowed_values is not None:
# copy the allowed_values, as this is going to create a
# closure, and we need to make sure that external modification of
# this list does not affect the created validator
self.allowed_values(allowed_values)
self._check_definition()
def __init__(self, internal=False, **kwargs):
self.internal = internal
kwargs.setdefault('mutable', False)
# if mutable=True has been passed -> raise an exception
if kwargs['mutable'] is True:
raise exc.InvalidArtifactTypePropertyDefinition(
_("Dependency relations cannot be mutable"))
super(RelationDefinition, self).__init__(**kwargs)
def _validate_allowed_values(self):
if self._allowed_values:
try:
for allowed_value in self._allowed_values:
self.validate(allowed_value, 'allowed_value')
except exc.InvalidArtifactPropertyValue:
raise exc.InvalidArtifactTypePropertyDefinition(
_("Allowed values %s are invalid under given validators") %
self._allowed_values)
def _build_declarative_meta(cls):
attrs = dict(cls.__dict__)
type_name = None
type_display_name = None
type_version = None
type_description = None
endpoint = None
for base in cls.__mro__:
for name, value in six.iteritems(vars(base)):
if name == '__type_name__':
if not type_name:
type_name = cls.__type_name__
elif name == '__type_version__':
if not type_version:
type_version = cls.__type_version__
elif name == '__type_description__':
if not type_description:
type_description = cls.__type_description__
elif name == '__endpoint__':
if not endpoint:
endpoint = cls.__endpoint__
elif name == '__type_display_name__':
if not type_display_name:
type_display_name = cls.__type_display_name__
elif base is not cls and name not in attrs:
if isinstance(value, AttributeDefinition):
attrs[name] = value
elif isinstance(value, ArtifactPropertyDescriptor):
attrs[name] = value.prop
meta = ArtifactTypeMetadata(type_name=type_name or cls.__name__,
type_display_name=type_display_name,
type_version=type_version,
type_description=type_description,
endpoint=endpoint)
setattr(cls, 'metadata', meta)
for k, v in attrs.items():
if k == 'metadata':
raise exc.InvalidArtifactTypePropertyDefinition(
_("Cannot declare artifact property with reserved name "
"'metadata'"))
if isinstance(v, AttributeDefinition):
v._set_name(k)
wrapper_class = None
if isinstance(v, ListAttributeDefinition):
wrapper_class = type("ValidatedList", (list, ), {})
_add_validation_to_list(wrapper_class)
if isinstance(v, DictAttributeDefinition):
wrapper_class = type("ValidatedDict", (dict, ), {})
_add_validation_to_dict(wrapper_class)
prop_descr = ArtifactPropertyDescriptor(v, wrapper_class)
setattr(cls, k, prop_descr)
meta.attributes.add(v)
def max_length(self, value):
"""Sets the maximum value length"""
self._max_length = value
if value is not None:
if value > 255:
raise exc.InvalidArtifactTypePropertyDefinition(
_('Max string length may not exceed 255 characters'))
self._add_validator('max_length',
lambda v: len(v) <= self._max_length,
_('Length is greater than maximum'))
else:
self._remove_validator('max_length')
self._check_definition()
def __init__(self,
item_type,
min_size=0,
max_size=None,
unique=False,
**kwargs):
super(ListAttributeDefinition, self).__init__(**kwargs)
if isinstance(item_type, types.ListType):
for it in item_type:
self._check_item_type(it)
# we need to copy the item_type collection
self.item_type = item_type[:]
if min_size != 0:
raise exc.InvalidArtifactTypePropertyDefinition(
_("Cannot specify 'min_size' explicitly"))
if max_size is not None:
raise exc.InvalidArtifactTypePropertyDefinition(
_("Cannot specify 'max_size' explicitly"))
# setting max_size and min_size to the length of item_type,
# as tuple-semantic assumes that the number of elements is set
# by the type spec
min_size = max_size = len(item_type)
else:
self._check_item_type(item_type)
self.item_type = item_type
if min_size:
self.min_size(min_size)
if max_size:
self.max_size(max_size)
if unique:
self.unique()
def min_length(self, value):
"""Sets the minimum value length"""
self._min_length = value
if value is not None:
if value < 0:
raise exc.InvalidArtifactTypePropertyDefinition(
_('Min string length may not be negative'))
self._add_validator('min_length',
lambda v: len(v) >= self._min_length,
_('Length is less than minimum'))
else:
self._remove_validator('min_length')
self._check_definition()
def __init__(self, references=ArtifactReference(), min_size=0,
max_size=None, **kwargs):
if isinstance(references, list):
raise exc.InvalidArtifactTypePropertyDefinition(
_("Invalid reference list specification"))
declarative.RelationDefinition.__init__(self, **kwargs)
declarative.ListAttributeDefinition.__init__(self,
item_type=references,
min_size=min_size,
max_size=max_size,
unique=True,
default=[]
if min_size == 0 else
None)
def __init__(self,
max_file_size=None,
min_file_size=None,
min_locations=None,
max_locations=None,
**kwargs):
"""Defines a binary object as part of Artifact Type
:param max_file_size: maximum size of the associate Blob
:param min_file_size: minimum size of the associated Blob
:param min_locations: minimum number of locations in the associated
Blob
:param max_locations: maximum number of locations in the associated
Blob
"""
mutable = kwargs.pop('mutable', False)
if mutable:
raise exc.InvalidArtifactTypePropertyDefinition(
_("BinaryObject property cannot be declared mutable"))
super(BinaryObject, self).__init__(default=None,
readonly=False,
mutable=mutable,
**kwargs)
self._max_file_size = max_file_size
self._min_file_size = min_file_size
self._min_locations = min_locations
self._max_locations = max_locations
self._add_validator('size_not_empty', lambda v: v.size is not None,
_('Blob size is not set'))
if max_file_size:
self._add_validator('max_size',
lambda v: v.size <= self._max_file_size,
_("File too large"))
if min_file_size:
self._add_validator('min_size',
lambda v: v.size >= self._min_file_size,
_("File too small"))
if min_locations:
self._add_validator(
'min_locations',
lambda v: len(v.locations) >= self._min_locations,
_("Too few locations"))
if max_locations:
self._add_validator(
'max_locations',
lambda v: len(v.locations) <= self._max_locations,
_("Too many locations"))
def _check_prop(self, key, item):
if (not isinstance(item, self.ALLOWED_PROPERTY_TYPES) or
(key is not None and not isinstance(key, types.StringTypes))):
raise exc.InvalidArtifactTypePropertyDefinition(
_('Invalid dict property type specification'))
