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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 12:34:54 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-28 12:34:54 +0000
commit0915b3ef56dfac3113cce55a59a5765dc94976be (patch)
treea8fea11d50b4f083e1bf0f90025ece7f0824784a /lib/base/serializer.cpp
parentInitial commit. (diff)
downloadicinga2-0915b3ef56dfac3113cce55a59a5765dc94976be.tar.xz
icinga2-0915b3ef56dfac3113cce55a59a5765dc94976be.zip
Adding upstream version 2.13.6.upstream/2.13.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--lib/base/serializer.cpp287
1 files changed, 287 insertions, 0 deletions
diff --git a/lib/base/serializer.cpp b/lib/base/serializer.cpp
new file mode 100644
index 0000000..c081c44
--- /dev/null
+++ b/lib/base/serializer.cpp
@@ -0,0 +1,287 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "base/serializer.hpp"
+#include "base/type.hpp"
+#include "base/application.hpp"
+#include "base/objectlock.hpp"
+#include "base/convert.hpp"
+#include "base/exception.hpp"
+#include "base/namespace.hpp"
+#include <boost/algorithm/string/join.hpp>
+#include <deque>
+
+using namespace icinga;
+
+struct SerializeStackEntry
+{
+ String Name;
+ Value Val;
+};
+
+CircularReferenceError::CircularReferenceError(String message, std::vector<String> path)
+ : m_Message(message), m_Path(path)
+{ }
+
+const char *CircularReferenceError::what(void) const throw()
+{
+ return m_Message.CStr();
+}
+
+std::vector<String> CircularReferenceError::GetPath() const
+{
+ return m_Path;
+}
+
+struct SerializeStack
+{
+ std::deque<SerializeStackEntry> Entries;
+
+ inline void Push(const String& name, const Value& val)
+ {
+ Object::Ptr obj;
+
+ if (val.IsObject())
+ obj = val;
+
+ if (obj) {
+ for (const auto& entry : Entries) {
+ if (entry.Val == obj) {
+ std::vector<String> path;
+ for (const auto& entry : Entries)
+ path.push_back(entry.Name);
+ path.push_back(name);
+ BOOST_THROW_EXCEPTION(CircularReferenceError("Cannot serialize object which recursively refers to itself. Attribute path which leads to the cycle: " + boost::algorithm::join(path, " -> "), path));
+ }
+ }
+ }
+
+ Entries.push_back({ name, obj });
+ }
+
+ inline void Pop()
+ {
+ Entries.pop_back();
+ }
+};
+
+static Value SerializeInternal(const Value& value, int attributeTypes, SerializeStack& stack);
+
+static Array::Ptr SerializeArray(const Array::Ptr& input, int attributeTypes, SerializeStack& stack)
+{
+ ArrayData result;
+
+ result.reserve(input->GetLength());
+
+ ObjectLock olock(input);
+
+ int index = 0;
+
+ for (const Value& value : input) {
+ stack.Push(Convert::ToString(index), value);
+ result.emplace_back(SerializeInternal(value, attributeTypes, stack));
+ stack.Pop();
+ index++;
+ }
+
+ return new Array(std::move(result));
+}
+
+static Dictionary::Ptr SerializeDictionary(const Dictionary::Ptr& input, int attributeTypes, SerializeStack& stack)
+{
+ DictionaryData result;
+
+ result.reserve(input->GetLength());
+
+ ObjectLock olock(input);
+
+ for (const Dictionary::Pair& kv : input) {
+ stack.Push(kv.first, kv.second);
+ result.emplace_back(kv.first, SerializeInternal(kv.second, attributeTypes, stack));
+ stack.Pop();
+ }
+
+ return new Dictionary(std::move(result));
+}
+
+static Dictionary::Ptr SerializeNamespace(const Namespace::Ptr& input, int attributeTypes, SerializeStack& stack)
+{
+ DictionaryData result;
+
+ ObjectLock olock(input);
+
+ for (const Namespace::Pair& kv : input) {
+ Value val = kv.second->Get();
+ stack.Push(kv.first, val);
+ result.emplace_back(kv.first, Serialize(val, attributeTypes));
+ stack.Pop();
+ }
+
+ return new Dictionary(std::move(result));
+}
+
+static Object::Ptr SerializeObject(const Object::Ptr& input, int attributeTypes, SerializeStack& stack)
+{
+ Type::Ptr type = input->GetReflectionType();
+
+ if (!type)
+ return nullptr;
+
+ DictionaryData fields;
+ fields.reserve(type->GetFieldCount() + 1);
+
+ ObjectLock olock(input);
+
+ for (int i = 0; i < type->GetFieldCount(); i++) {
+ Field field = type->GetFieldInfo(i);
+
+ if (attributeTypes != 0 && (field.Attributes & attributeTypes) == 0)
+ continue;
+
+ if (strcmp(field.Name, "type") == 0)
+ continue;
+
+ Value value = input->GetField(i);
+ stack.Push(field.Name, value);
+ fields.emplace_back(field.Name, SerializeInternal(value, attributeTypes, stack));
+ stack.Pop();
+ }
+
+ fields.emplace_back("type", type->GetName());
+
+ return new Dictionary(std::move(fields));
+}
+
+static Array::Ptr DeserializeArray(const Array::Ptr& input, bool safe_mode, int attributeTypes)
+{
+ ArrayData result;
+
+ result.reserve(input->GetLength());
+
+ ObjectLock olock(input);
+
+ for (const Value& value : input) {
+ result.emplace_back(Deserialize(value, safe_mode, attributeTypes));
+ }
+
+ return new Array(std::move(result));
+}
+
+static Dictionary::Ptr DeserializeDictionary(const Dictionary::Ptr& input, bool safe_mode, int attributeTypes)
+{
+ DictionaryData result;
+
+ result.reserve(input->GetLength());
+
+ ObjectLock olock(input);
+
+ for (const Dictionary::Pair& kv : input) {
+ result.emplace_back(kv.first, Deserialize(kv.second, safe_mode, attributeTypes));
+ }
+
+ return new Dictionary(std::move(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."));
+
+ 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(std::vector<Value>());
+
+ ObjectLock olock(input);
+ for (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);
+
+ if ((field.Attributes & attributeTypes) == 0)
+ continue;
+
+ try {
+ instance->SetField(fid, Deserialize(kv.second, safe_mode, attributeTypes), true);
+ } catch (const std::exception&) {
+ instance->SetField(fid, Empty);
+ }
+ }
+
+ return instance;
+}
+
+static Value SerializeInternal(const Value& value, int attributeTypes, SerializeStack& stack)
+{
+ if (!value.IsObject())
+ return value;
+
+ Object::Ptr input = value;
+
+ Array::Ptr array = dynamic_pointer_cast<Array>(input);
+
+ if (array)
+ return SerializeArray(array, attributeTypes, stack);
+
+ Dictionary::Ptr dict = dynamic_pointer_cast<Dictionary>(input);
+
+ if (dict)
+ return SerializeDictionary(dict, attributeTypes, stack);
+
+ Namespace::Ptr ns = dynamic_pointer_cast<Namespace>(input);
+
+ if (ns)
+ return SerializeNamespace(ns, attributeTypes, stack);
+
+ return SerializeObject(input, attributeTypes, stack);
+}
+
+Value icinga::Serialize(const Value& value, int attributeTypes)
+{
+ SerializeStack stack;
+ return SerializeInternal(value, attributeTypes, stack);
+}
+
+Value icinga::Deserialize(const Value& value, bool safe_mode, int attributeTypes)
+{
+ return Deserialize(nullptr, 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)
+ return DeserializeArray(array, safe_mode, attributeTypes);
+
+ Dictionary::Ptr dict = dynamic_pointer_cast<Dictionary>(input);
+
+ ASSERT(dict);
+
+ if ((safe_mode && !object) || !dict->Contains("type"))
+ return DeserializeDictionary(dict, safe_mode, attributeTypes);
+ else
+ return DeserializeObject(object, dict, safe_mode, attributeTypes);
+}