icinga2/lib/base/scriptvariable.cpp

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/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
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* *
* 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. *
******************************************************************************/
#include "base/scriptvariable.h"
#include "base/singleton.h"
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using namespace icinga;
ScriptVariable::ScriptVariable(const Value& data)
: m_Data(data), m_Constant(false)
{ }
ScriptVariable::Ptr ScriptVariable::GetByName(const String& name)
{
return ScriptVariableRegistry::GetInstance()->GetItem(name);
}
void ScriptVariable::SetConstant(bool constant)
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{
m_Constant = constant;
}
bool ScriptVariable::IsConstant(void) const
{
return m_Constant;
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}
void ScriptVariable::SetData(const Value& data)
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{
m_Data = data;
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}
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Value ScriptVariable::GetData(void) const
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{
return m_Data;
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}
Value ScriptVariable::Get(const String& name)
{
ScriptVariable::Ptr sv = GetByName(name);
if (!sv)
BOOST_THROW_EXCEPTION(std::invalid_argument("Tried to access undefined script variable '" + name + "'"));
return sv->GetData();
}
ScriptVariable::Ptr ScriptVariable::Set(const String& name, const Value& value, bool overwrite, bool make_const)
{
ScriptVariable::Ptr sv = GetByName(name);
if (!sv) {
sv = make_shared<ScriptVariable>(value);
ScriptVariableRegistry::GetInstance()->Register(name, sv);
} else if (overwrite) {
if (sv->IsConstant())
BOOST_THROW_EXCEPTION(std::invalid_argument("Tried to modify read-only script variable '" + name + "'"));
sv->SetData(value);
}
if (make_const)
sv->SetConstant(true);
return sv;
}
void ScriptVariable::Unregister(const String& name)
{
ScriptVariableRegistry::GetInstance()->Unregister(name);
}
ScriptVariableRegistry *ScriptVariableRegistry::GetInstance(void)
{
return Singleton<ScriptVariableRegistry>::GetInstance();
}