icinga2/lib/base/scriptutils.cpp

267 lines
7.3 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2015 Icinga Development Team (http://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. *
******************************************************************************/
#include "base/scriptutils.hpp"
#include "base/function.hpp"
#include "base/utility.hpp"
#include "base/convert.hpp"
#include "base/json.hpp"
#include "base/logger.hpp"
#include "base/objectlock.hpp"
#include "base/dynamictype.hpp"
#include "base/application.hpp"
#include <boost/foreach.hpp>
#include <boost/regex.hpp>
#include <algorithm>
#include <set>
using namespace icinga;
REGISTER_SAFE_SCRIPTFUNCTION(regex, &ScriptUtils::Regex);
REGISTER_SAFE_SCRIPTFUNCTION(match, &Utility::Match);
REGISTER_SAFE_SCRIPTFUNCTION(len, &ScriptUtils::Len);
REGISTER_SAFE_SCRIPTFUNCTION(union, &ScriptUtils::Union);
REGISTER_SAFE_SCRIPTFUNCTION(intersection, &ScriptUtils::Intersection);
REGISTER_SCRIPTFUNCTION(log, &ScriptUtils::Log);
REGISTER_SCRIPTFUNCTION(range, &ScriptUtils::Range);
REGISTER_SCRIPTFUNCTION(exit, &Application::Exit);
REGISTER_SAFE_SCRIPTFUNCTION(typeof, &ScriptUtils::TypeOf);
REGISTER_SAFE_SCRIPTFUNCTION(keys, &ScriptUtils::Keys);
REGISTER_SAFE_SCRIPTFUNCTION(random, &Utility::Random);
REGISTER_SAFE_SCRIPTFUNCTION(get_object, &ScriptUtils::GetObject);
REGISTER_SAFE_SCRIPTFUNCTION(get_objects, &ScriptUtils::GetObjects);
REGISTER_SCRIPTFUNCTION(assert, &ScriptUtils::Assert);
REGISTER_SAFE_SCRIPTFUNCTION(string, &ScriptUtils::CastString);
REGISTER_SAFE_SCRIPTFUNCTION(number, &ScriptUtils::CastNumber);
REGISTER_SAFE_SCRIPTFUNCTION(bool, &ScriptUtils::CastBool);
REGISTER_SAFE_SCRIPTFUNCTION(get_time, &Utility::GetTime);
String ScriptUtils::CastString(const Value& value)
{
return value;
}
double ScriptUtils::CastNumber(const Value& value)
{
return value;
}
bool ScriptUtils::CastBool(const Value& value)
{
return value.ToBool();
}
bool ScriptUtils::Regex(const String& pattern, const String& text)
{
bool res = false;
try {
boost::regex expr(pattern.GetData());
boost::smatch what;
res = boost::regex_search(text.GetData(), what, expr);
} catch (boost::exception&) {
res = false; /* exception means something went terribly wrong */
}
return res;
}
double ScriptUtils::Len(const Value& value)
{
if (value.IsObjectType<Dictionary>()) {
Dictionary::Ptr dict = value;
return dict->GetLength();
} else if (value.IsObjectType<Array>()) {
Array::Ptr array = value;
return array->GetLength();
} else if (value.IsString()) {
return Convert::ToString(value).GetLength();
} else {
return 0;
}
}
Array::Ptr ScriptUtils::Union(const std::vector<Value>& arguments)
{
std::set<Value> values;
BOOST_FOREACH(const Value& varr, arguments) {
Array::Ptr arr = varr;
if (arr) {
BOOST_FOREACH(const Value& value, arr) {
values.insert(value);
}
}
}
Array::Ptr result = new Array();
BOOST_FOREACH(const Value& value, values) {
result->Add(value);
}
return result;
}
Array::Ptr ScriptUtils::Intersection(const std::vector<Value>& arguments)
{
if (arguments.size() == 0)
return new Array();
Array::Ptr result = new Array();
Array::Ptr arg1 = arguments[0];
if (!arg1)
return result;
Array::Ptr arr1 = arg1->ShallowClone();
for (std::vector<Value>::size_type i = 1; i < arguments.size(); i++) {
std::sort(arr1->Begin(), arr1->End());
Array::Ptr arg2 = arguments[i];
if (!arg2)
return result;
Array::Ptr arr2 = arg2->ShallowClone();
std::sort(arr2->Begin(), arr2->End());
result->Resize(std::max(arr1->GetLength(), arr2->GetLength()));
Array::Iterator it = std::set_intersection(arr1->Begin(), arr1->End(), arr2->Begin(), arr2->End(), result->Begin());
result->Resize(it - result->Begin());
arr1 = result;
}
return result;
}
void ScriptUtils::Log(const std::vector<Value>& arguments)
{
if (arguments.size() != 1 && arguments.size() != 3)
BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid number of arguments for log()"));
LogSeverity severity;
String facility;
Value message;
if (arguments.size() == 1) {
severity = LogInformation;
facility = "config";
message = arguments[0];
} else {
int sval = static_cast<int>(arguments[0]);
severity = static_cast<LogSeverity>(sval);
facility = arguments[1];
message = arguments[2];
}
if (message.IsString() || (!message.IsObjectType<Array>() && !message.IsObjectType<Dictionary>()))
::Log(severity, facility, message);
else
::Log(severity, facility, JsonEncode(message));
}
Array::Ptr ScriptUtils::Range(const std::vector<Value>& arguments)
{
double start, end, increment;
switch (arguments.size()) {
case 1:
start = 0;
end = arguments[0];
increment = 1;
break;
case 2:
start = arguments[0];
end = arguments[1];
increment = 1;
break;
case 3:
start = arguments[0];
end = arguments[1];
increment = arguments[2];
break;
default:
BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid number of arguments for range()"));
}
Array::Ptr result = new Array();
if ((start < end && increment <= 0) ||
(start > end && increment >= 0))
return result;
for (double i = start; i < end; i += increment) {
result->Add(i);
}
return result;
}
Type::Ptr ScriptUtils::TypeOf(const Value& value)
{
return value.GetReflectionType();
}
Array::Ptr ScriptUtils::Keys(const Dictionary::Ptr& dict)
{
Array::Ptr result = new Array();
if (dict) {
ObjectLock olock(dict);
BOOST_FOREACH(const Dictionary::Pair& kv, dict) {
result->Add(kv.first);
}
}
return result;
}
DynamicObject::Ptr ScriptUtils::GetObject(const Type::Ptr& type, const String& name)
{
DynamicType::Ptr dtype = DynamicType::GetByName(type->GetName());
if (!dtype)
BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid type name"));
return dtype->GetObject(name);
}
Array::Ptr ScriptUtils::GetObjects(const Type::Ptr& type)
{
DynamicType::Ptr dtype = DynamicType::GetByName(type->GetName());
if (!dtype)
BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid type name"));
Array::Ptr result = new Array();
BOOST_FOREACH(const DynamicObject::Ptr& object, dtype->GetObjects())
result->Add(object);
return result;
}
void ScriptUtils::Assert(const Value& arg)
{
if (!arg.ToBool())
BOOST_THROW_EXCEPTION(std::runtime_error("Assertion failed"));
}