def create_context(
loader_source='aria.parser.loading.DefaultLoaderSource',
reader_source='aria.parser.reading.DefaultReaderSource',
presenter_source='aria.parser.presentation.DefaultPresenterSource',
presenter=None,
debug=False,
cache=True,
import_profile=None,
adhoc_inputs=None,
plugin_dir=None,
validate_normative=None):
context = ConsumptionContext()
context.loading.loader_source = import_fullname(loader_source)()
context.reading.reader_source = import_fullname(reader_source)()
context.presentation.presenter_source = import_fullname(
presenter_source)()
context.presentation.presenter_class = import_fullname(presenter)
context.presentation.threads = 1 # tests already run in maximum thread density
context.presentation.cache = cache
if import_profile is not None:
context.presentation.configuration[
'tosca.import_profile'] = import_profile
if adhoc_inputs is not None:
context.presentation.configuration[
'tosca.adhoc_inputs'] = adhoc_inputs
if validate_normative is not None:
context.presentation.configuration[
'validate_normative'] = validate_normative
if plugin_dir:
context.loading.prefixes = collections.StrictList([plugin_dir])
context.presentation.print_exceptions = debug
return context
def create_context(
uri,
loader_source='aria.parser.loading.DefaultLoaderSource',
reader_source='aria.parser.reading.DefaultReaderSource',
presenter_source='aria.parser.presentation.DefaultPresenterSource',
presenter=None,
debug=False):
context = ConsumptionContext()
context.loading.loader_source = import_fullname(loader_source)()
context.reading.reader_source = import_fullname(reader_source)()
context.presentation.location = UriLocation(uri) if isinstance(
uri, basestring) else uri
context.presentation.presenter_source = import_fullname(presenter_source)()
context.presentation.presenter_class = import_fullname(presenter)
context.presentation.print_exceptions = debug
return context
def coerce_value(context,
presentation,
the_type,
entry_schema,
constraints,
value,
aspect=None): # pylint: disable=too-many-return-statements
"""
Returns the value after it's coerced to its type, reporting validation errors if it cannot be
coerced.
Supports both complex data types and primitives.
Data types can use the ``coerce_value`` extension to hook their own specialized function.
If the extension is present, we will delegate to that hook.
"""
# TODO: should support models as well as presentations
is_function, func = get_function(context, presentation, value)
if is_function:
return func
if the_type is None:
return value
if the_type == None.__class__:
if value is not None:
context.validation.report(
'field "%s" is of type "null" but has a non-null value: %s' %
(presentation._name, safe_repr(value)),
locator=presentation._locator,
level=Issue.BETWEEN_FIELDS)
return None
# Delegate to 'coerce_value' extension
if hasattr(the_type, '_get_extension'):
coerce_value_fn_name = the_type._get_extension('coerce_value')
if coerce_value_fn_name is not None:
if value is None:
return None
coerce_value_fn = import_fullname(coerce_value_fn_name)
return coerce_value_fn(context, presentation, the_type,
entry_schema, constraints, value, aspect)
if hasattr(the_type, '_coerce_value'):
# Delegate to '_coerce_value' (likely a DataType instance)
return the_type._coerce_value(context, presentation, entry_schema,
constraints, value, aspect)
# Coerce to primitive type
return coerce_to_primitive(context, presentation, the_type, constraints,
value, aspect)
def create_consumer(context, consumer_class_name):
consumer = ConsumerChain(context, (Read, Validate))
dumper = None
if consumer_class_name == 'validate':
dumper = None
elif consumer_class_name == 'presentation':
dumper = consumer.consumers[0]
elif consumer_class_name == 'template':
consumer.append(ServiceTemplate)
elif consumer_class_name == 'types':
consumer.append(ServiceTemplate, Types)
elif consumer_class_name == 'instance':
consumer.append(ServiceTemplate, Inputs, ServiceInstance)
else:
consumer.append(ServiceTemplate, Inputs, ServiceInstance)
consumer.append(import_fullname(consumer_class_name))
if dumper is None:
# Default to last consumer
dumper = consumer.consumers[-1]
return consumer, dumper