mirror of https://github.com/Icinga/icinga2.git
252 lines
7.2 KiB
C++
252 lines
7.2 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2016 Icinga Development Team (https://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "base/object.hpp"
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#include "base/value.hpp"
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#include "base/dictionary.hpp"
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#include "base/primitivetype.hpp"
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#include "base/utility.hpp"
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#include "base/timer.hpp"
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#include "base/logger.hpp"
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#include "base/exception.hpp"
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#include <boost/foreach.hpp>
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#include <boost/lexical_cast.hpp>
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using namespace icinga;
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DEFINE_TYPE_INSTANCE(Object);
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#ifdef I2_LEAK_DEBUG
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static boost::mutex l_ObjectCountLock;
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static std::map<String, int> l_ObjectCounts;
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static Timer::Ptr l_ObjectCountTimer;
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#endif /* I2_LEAK_DEBUG */
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/**
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* Default constructor for the Object class.
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*/
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Object::Object(void)
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: m_References(0), m_Mutex(0)
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#ifdef I2_DEBUG
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, m_LockOwner(0)
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#endif /* I2_DEBUG */
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{ }
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/**
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* Destructor for the Object class.
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*/
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Object::~Object(void)
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{
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delete reinterpret_cast<boost::recursive_mutex *>(m_Mutex);
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}
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/**
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* Returns a string representation for the object.
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*/
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String Object::ToString(void) const
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{
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return "Object of type '" + GetReflectionType()->GetName() + "'";
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}
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#ifdef I2_DEBUG
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/**
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* Checks if the calling thread owns the lock on this object.
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*
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* @returns True if the calling thread owns the lock, false otherwise.
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*/
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bool Object::OwnsLock(void) const
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{
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#ifdef _WIN32
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DWORD tid = InterlockedExchangeAdd(&m_LockOwner, 0);
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return (tid == GetCurrentThreadId());
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#else /* _WIN32 */
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pthread_t tid = __sync_fetch_and_add(&m_LockOwner, 0);
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return (tid == pthread_self());
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#endif /* _WIN32 */
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}
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#endif /* I2_DEBUG */
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void Object::SetField(int id, const Value&, bool, const Value&)
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{
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if (id == 0)
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BOOST_THROW_EXCEPTION(std::runtime_error("Type field cannot be set."));
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else
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BOOST_THROW_EXCEPTION(std::runtime_error("Invalid field ID."));
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}
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Value Object::GetField(int id) const
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{
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if (id == 0)
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return GetReflectionType()->GetName();
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else
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BOOST_THROW_EXCEPTION(std::runtime_error("Invalid field ID."));
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}
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bool Object::HasOwnField(const String& field) const
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{
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Type::Ptr type = GetReflectionType();
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if (!type)
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return false;
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return type->GetFieldId(field) != -1;
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}
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Value Object::GetFieldByName(const String& field, bool sandboxed, const DebugInfo& debugInfo) const
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{
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Type::Ptr type = GetReflectionType();
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if (!type)
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return Empty;
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int fid = type->GetFieldId(field);
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if (fid == -1)
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return GetPrototypeField(const_cast<Object *>(this), field, true, debugInfo);
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if (sandboxed) {
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Field fieldInfo = type->GetFieldInfo(fid);
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if (fieldInfo.Attributes & FANoUserView)
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BOOST_THROW_EXCEPTION(ScriptError("Accessing the field '" + field + "' for type '" + type->GetName() + "' is not allowed in sandbox mode.", debugInfo));
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}
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return GetField(fid);
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}
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void Object::SetFieldByName(const String& field, const Value& value, const DebugInfo& debugInfo)
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{
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Type::Ptr type = GetReflectionType();
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if (!type)
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BOOST_THROW_EXCEPTION(ScriptError("Cannot set field on object.", debugInfo));
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int fid = type->GetFieldId(field);
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if (fid == -1)
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BOOST_THROW_EXCEPTION(ScriptError("Attribute '" + field + "' does not exist.", debugInfo));
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try {
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SetField(fid, value);
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} catch (const boost::bad_lexical_cast&) {
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Field fieldInfo = type->GetFieldInfo(fid);
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Type::Ptr ftype = Type::GetByName(fieldInfo.TypeName);
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BOOST_THROW_EXCEPTION(ScriptError("Attribute '" + field + "' cannot be set to value of type '" + value.GetTypeName() + "', expected '" + ftype->GetName() + "'", debugInfo));
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} catch (const std::bad_cast&) {
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Field fieldInfo = type->GetFieldInfo(fid);
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Type::Ptr ftype = Type::GetByName(fieldInfo.TypeName);
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BOOST_THROW_EXCEPTION(ScriptError("Attribute '" + field + "' cannot be set to value of type '" + value.GetTypeName() + "', expected '" + ftype->GetName() + "'", debugInfo));
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}
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}
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void Object::Validate(int types, const ValidationUtils& utils)
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{
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/* Nothing to do here. */
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}
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void Object::ValidateField(int id, const Value& value, const ValidationUtils& utils)
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{
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/* Nothing to do here. */
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}
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void Object::NotifyField(int id, const Value& cookie)
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{
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BOOST_THROW_EXCEPTION(std::runtime_error("Invalid field ID."));
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}
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Object::Ptr Object::NavigateField(int id) const
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{
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BOOST_THROW_EXCEPTION(std::runtime_error("Invalid field ID."));
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}
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Object::Ptr Object::Clone(void) const
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{
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BOOST_THROW_EXCEPTION(std::runtime_error("Object cannot be cloned."));
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}
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Type::Ptr Object::GetReflectionType(void) const
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{
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return Object::TypeInstance;
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}
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Value icinga::GetPrototypeField(const Value& context, const String& field, bool not_found_error, const DebugInfo& debugInfo)
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{
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Type::Ptr ctype = context.GetReflectionType();
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Type::Ptr type = ctype;
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do {
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Object::Ptr object = type->GetPrototype();
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if (object && object->HasOwnField(field))
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return object->GetFieldByName(field, false, debugInfo);
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type = type->GetBaseType();
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} while (type);
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if (not_found_error)
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BOOST_THROW_EXCEPTION(ScriptError("Invalid field access (for value of type '" + ctype->GetName() + "'): '" + field + "'", debugInfo));
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else
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return Empty;
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}
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#ifdef I2_LEAK_DEBUG
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void icinga::TypeAddObject(Object *object)
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{
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boost::mutex::scoped_lock lock(l_ObjectCountLock);
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String typeName = Utility::GetTypeName(typeid(*object));
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l_ObjectCounts[typeName]++;
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}
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void icinga::TypeRemoveObject(Object *object)
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{
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boost::mutex::scoped_lock lock(l_ObjectCountLock);
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String typeName = Utility::GetTypeName(typeid(*object));
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l_ObjectCounts[typeName]--;
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}
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static void TypeInfoTimerHandler(void)
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{
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boost::mutex::scoped_lock lock(l_ObjectCountLock);
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typedef std::map<String, int>::value_type kv_pair;
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BOOST_FOREACH(kv_pair& kv, l_ObjectCounts) {
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if (kv.second == 0)
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continue;
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Log(LogInformation, "TypeInfo")
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<< kv.second << " " << kv.first << " objects";
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kv.second = 0;
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}
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}
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static void StartTypeInfoTimer(void)
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{
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l_ObjectCountTimer = new Timer();
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l_ObjectCountTimer->SetInterval(10);
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l_ObjectCountTimer->OnTimerExpired.connect(boost::bind(TypeInfoTimerHandler));
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l_ObjectCountTimer->Start();
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}
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INITIALIZE_ONCE(StartTypeInfoTimer);
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#endif /* I2_LEAK_DEBUG */
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