icinga2/lib/base/serializer.cpp

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/******************************************************************************
* Icinga 2 *
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* Copyright (C) 2012-2016 Icinga Development Team (https://www.icinga.org/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
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#include "base/serializer.hpp"
#include "base/type.hpp"
#include "base/application.hpp"
#include "base/objectlock.hpp"
#include <boost/foreach.hpp>
using namespace icinga;
static Array::Ptr SerializeArray(const Array::Ptr& input, int attributeTypes)
{
Array::Ptr result = new Array();
ObjectLock olock(input);
BOOST_FOREACH(const Value& value, input) {
result->Add(Serialize(value, attributeTypes));
}
return result;
}
static Dictionary::Ptr SerializeDictionary(const Dictionary::Ptr& input, int attributeTypes)
{
Dictionary::Ptr result = new Dictionary();
ObjectLock olock(input);
BOOST_FOREACH(const Dictionary::Pair& kv, input) {
result->Set(kv.first, Serialize(kv.second, attributeTypes));
}
return result;
}
static Object::Ptr SerializeObject(const Object::Ptr& input, int attributeTypes)
{
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Type::Ptr type = input->GetReflectionType();
if (!type)
return Object::Ptr();
Dictionary::Ptr fields = new Dictionary();
for (int i = 0; i < type->GetFieldCount(); i++) {
Field field = type->GetFieldInfo(i);
if (attributeTypes != 0 && (field.Attributes & attributeTypes) == 0)
continue;
fields->Set(field.Name, Serialize(input->GetField(i), attributeTypes));
}
fields->Set("type", type->GetName());
return fields;
}
static Array::Ptr DeserializeArray(const Array::Ptr& input, bool safe_mode, int attributeTypes)
{
Array::Ptr result = new Array();
ObjectLock olock(input);
BOOST_FOREACH(const Value& value, input) {
result->Add(Deserialize(value, safe_mode, attributeTypes));
}
return result;
}
static Dictionary::Ptr DeserializeDictionary(const Dictionary::Ptr& input, bool safe_mode, int attributeTypes)
{
Dictionary::Ptr result = new Dictionary();
ObjectLock olock(input);
BOOST_FOREACH(const Dictionary::Pair& kv, input) {
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result->Set(kv.first, Deserialize(kv.second, safe_mode, attributeTypes));
}
return result;
}
static Object::Ptr DeserializeObject(const Object::Ptr& object, const Dictionary::Ptr& input, bool safe_mode, int attributeTypes)
{
if (!object && safe_mode)
BOOST_THROW_EXCEPTION(std::runtime_error("Tried to instantiate object while safe mode is enabled."));
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Type::Ptr type;
if (object)
type = object->GetReflectionType();
else
type = Type::GetByName(input->Get("type"));
if (!type)
return object;
Object::Ptr instance;
if (object)
instance = object;
else
instance = type->Instantiate();
ObjectLock olock(input);
BOOST_FOREACH(const Dictionary::Pair& kv, input) {
if (kv.first.IsEmpty())
continue;
int fid = type->GetFieldId(kv.first);
if (fid < 0)
continue;
Field field = type->GetFieldInfo(fid);
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if ((field.Attributes & attributeTypes) == 0)
continue;
try {
instance->SetField(fid, Deserialize(kv.second, safe_mode, attributeTypes));
} catch (const std::exception&) {
instance->SetField(fid, Empty);
}
}
return instance;
}
Value icinga::Serialize(const Value& value, int attributeTypes)
{
if (!value.IsObject())
return value;
Object::Ptr input = value;
Array::Ptr array = dynamic_pointer_cast<Array>(input);
if (array != NULL)
return SerializeArray(array, attributeTypes);
Dictionary::Ptr dict = dynamic_pointer_cast<Dictionary>(input);
if (dict != NULL)
return SerializeDictionary(dict, attributeTypes);
return SerializeObject(input, attributeTypes);
}
Value icinga::Deserialize(const Value& value, bool safe_mode, int attributeTypes)
{
return Deserialize(Object::Ptr(), value, safe_mode, attributeTypes);
}
Value icinga::Deserialize(const Object::Ptr& object, const Value& value, bool safe_mode, int attributeTypes)
{
if (!value.IsObject())
return value;
Object::Ptr input = value;
Array::Ptr array = dynamic_pointer_cast<Array>(input);
if (array != NULL)
return DeserializeArray(array, safe_mode, attributeTypes);
Dictionary::Ptr dict = dynamic_pointer_cast<Dictionary>(input);
ASSERT(dict != NULL);
if ((safe_mode && !object) || !dict->Contains("type"))
return DeserializeDictionary(dict, safe_mode, attributeTypes);
else
return DeserializeObject(object, dict, safe_mode, attributeTypes);
}