def __get_field_value(self, field, klass, child, id, i):
if isinstance(field.type, (tuple, list, set, frozenset)):
value = self.__convert_list(klass, i, child, id, field)
elif issubclass(field.type, Entity):
try:
value = self.__convert_entity(klass, child, id, field)
except AttributeError, e:
self.logger.exception("Unexpected error %s while unserializing %s" % (repr(e), tostring(child)))
raise
def __unserialize_entity(self, klass, child, expect, i):
#self.logger.debug("__unserialize_entity %s %s %s %s" % (klass, child, expect, i))
if expect != child.tag:
raise Surprised("expected %s but list contained %s (%s)" % (expect, child.tag, tostring(child)))
try:
id = int(child.get("id"))
except (TypeError, ValueError):
raise Surprised("Illegal id at element %s: %s" % (i, child.get("id")))
values = {}
for field in klass.get_fields():
values[field.name] = self.__get_field_value(field, klass, child, id, i)
#self.logger.debug("__unserialize_entity out %s %s %s" % (klass, id, values))
return id, values
def serialize(self, e, pretty_print = True): assert isinstance(e, Entity) name = self.__get_tagname(e) + "Instance" parent = Element(name) for k, v in e._get_fields().iteritems(): if not v and v not in (0, False): SubElement(parent, k) elif isinstance(v, (tuple, set, list, frozenset)): for v2 in v: assert isinstance(v2, Entity) self.__append_entity(parent, k, v2, e.__class__) else: if isinstance(v, Entity): self.__append_entity(parent, k, v, e.__class__) else: child = SubElement(parent, k) child.text = unicode(v) return tostring(parent, pretty_print = pretty_print)
def __convert_entity(self, klass, child, id, field):
element = self.__get_element_by_tagname(klass, child, id, field)
if element is None:
if field.name == "configParamAtomic":
element = child.find("configurationParametersAtomic")
if element is not None:
return self.__convert_entity(klass, element, id, field)
return None
expect = field.type
value = element.get("id")
if not value and len(element):
if len(element) > 1:
self.logger.warn("Found more than one of child of %s for %s-%d in %s" % (field.name, klass, id, tostring(element)))
value = element[0].get("id")
self.__get_entity_klass(element[0].tag)
if value:
try:
cid = int(value)
except (TypeError, ValueError):
raise Surprised("illegal value for id on attribute %s: %s (%s)" % (field.name, value, tostring(element)))
try:
#print ("get", expect, value)
try:
if klass is expect:
value = self.__repo._get_entity_unlocked(expect, cid)
else:
#raise Exception(expect, cid)
value = self.__repo._get_entity(expect, cid)
except NoEntityFound, e:
self.logger.exception("Could not find referenced element %s for %s-%d in %s" % (field.name, klass, id, tostring(element)))
raise Surprised(e)
except Exception, e:
if expect is ConfigParamComposite:
#self.logger.info("Was looking for ConfigParamComposite now trying ConfigParamAtomic")
value = self.__repo._get_entity(ConfigParamAtomic, cid)
#self.logger.warn("ConfigParamAtomic found where ConfigParamComposite was expected. This is an error in the repo's structure. I'll try to fix things for you.")
comp = ConfigParamComposite( fields = { "commonName": u"autogenerated-%d" % (value.id, ), "description": u"" })
comp.configParams = [ value ]
return comp
self.logger.exception("error while getting %s-%s (id=%s) for %s-%s.%s: '%s' (%s)" % (field.type, value, value, klass, id, field.name, repr(e), tostring(element)))
raise
def __convert_list(self, klass, i, child, parentid, field):
assert child is not None, "None passed as child for __convert_list"
#self.logger.debug("__convert_list %s %s", klass, field)
node = self.__get_element_by_tagname(klass, child, parentid, field)
#self.logger.debug("found child: %s" % (node, ))
if node is None:
raise Surprised("list attribute not found for %s-%s: %s (%s)" % (klass.__name__, parentid, field.name, tostring(child)))
#print("__convert_list: %s %s %s %s %s" % (klass, i, child, parentid, field))
infos = [(element.tag, element.get("id")) for element in node]
#self.logger.debug("have nfos %s " % (infos, ))
try:
infos = [(name, int(id)) for name, id in infos]
except (ValueError, TypeError):
raise Surprised("Illegal id '%s' in %s on element %d of %s-%d (%s - %s)" % (id, field.name, i, klass.__name__, parentid, infos, tostring(child)))
#self.logger.debug("__convert_list call %s %s", klass, infos)
list = []
for name, id in infos:
memklass=self.__get_entity_klass(name)
try:
list.append(self.__repo._get_entity(klass = memklass, id=id))
except NoEntityFound:
self.logger.exception("referenced entity not found when unserializing attribute %s of %s-%s: %s-%s" % (field.name, klass.__name__, parentid, memklass.__name__, id))
raise Surprised("referenced entity not found when unserializing attribute %s of %s-%s: %s-%s" % (field.name, klass.__name__, parentid, memklass.__name__, id))
#self.logger.debug("__convert_list %s %s", klass, infos)
return list
elif issubclass(field.type, Entity):
try:
value = self.__convert_entity(klass, child, id, field)
except AttributeError, e:
self.logger.exception("Unexpected error %s while unserializing %s" % (repr(e), tostring(child)))
raise
else:
value = self.__get_text(child, field.name)
if value is not None:
if issubclass(field.type, bool):
value = value.lower() not in ( "", "false", "f", "no", "0" )
else:
try:
value = field.type(value)
except (ValueError, TypeError) as e:
raise Surprised("illegal value for attribute %s (%s): %s (%s, %s, %s)" % (field.name, field.type, value, repr(e), type(value), tostring(child)))
if value is None:
if not field.nullable:
if ((field.default is None and not isinstance(field.type, type)) or not field.coerce_none):
raise Surprised(("attribute %s not found on element %d (id=%d - %s)" % (field.name, i, id, tostring(child))))
#self.logger.warn("attribute %s not found on element %d (id=%d) %s %s" % (field.name, i, id, field.default, field.coerce_none))
value = field.get_default_value()
#if value is not None:
#self.logger.debug("Coercing to %s" % (value, ))
elif field.enum is not None and value not in field.enum:
if field.name == "configParamType":
if value == "int":
value = "integer"
elif value == "BOOLEAN":