gistfile1.py

class SchemaNotProvided(Exception):
    """
    Tried to reference a schema that wasn't predefined.
    """

class LocalRefResolver(RefResolver):
    """
    A L{RefResolver} that doesn't try to resolve remote schema.
    """
    def resolve_remote(self, uri):
        raise SchemaNotProvided(uri)


SCHEMA_BASE = PACKAGE.descendant([b'publicapi', b'schema'])
SCHEMAS = {
    b'/v2/types.json': yaml.safe_load(SCHEMA_BASE.child(b'types.yml').getContent()),
    b'/v2/endpoints.json': yaml.safe_load(SCHEMA_BASE.child(b'endpoints.yml').getContent()),
    }


def getValidator(schema):
    """
    Get a L{jsonschema} validator for C{schema}.

    @param schema: The JSON Schema to validate against.
    @type schema: L{dict}
    """
    # The base_uri here isn't correct for the schema,
    # but does give proper relative paths.
    resolver = LocalRefResolver(
            base_uri=b'',
            referrer=schema, store=SCHEMAS)
    resolver.resolution_scope = b''
    return validator_for(schema)(
        schema, resolver=resolver, format_checker=draft4_format_checker)