mirror of https://github.com/Icinga/icinga2.git
393 lines
9.8 KiB
C++
393 lines
9.8 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2013 Icinga Development Team (http://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/dynamicobject.h"
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#include "base/dynamictype.h"
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#include "base/netstring.h"
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#include "base/registry.h"
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#include "base/stdiostream.h"
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#include "base/debug.h"
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#include "base/objectlock.h"
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#include "base/logger_fwd.h"
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#include "base/exception.h"
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#include "base/timer.h"
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#include "base/scriptfunction.h"
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#include <fstream>
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#include <boost/make_shared.hpp>
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#include <boost/tuple/tuple.hpp>
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#include <boost/foreach.hpp>
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#include <boost/exception/errinfo_api_function.hpp>
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#include <boost/exception/errinfo_errno.hpp>
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#include <boost/exception/errinfo_file_name.hpp>
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using namespace icinga;
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boost::signals2::signal<void (const DynamicObject::Ptr&)> DynamicObject::OnStarted;
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boost::signals2::signal<void (const DynamicObject::Ptr&)> DynamicObject::OnStopped;
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boost::signals2::signal<void (const DynamicObject::Ptr&)> DynamicObject::OnStateChanged;
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boost::signals2::signal<void (const DynamicObject::Ptr&, const String&, bool)> DynamicObject::OnAuthorityChanged;
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DynamicObject::DynamicObject(void)
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: m_Active(false)
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{ }
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DynamicObject::~DynamicObject(void)
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{ }
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Dictionary::Ptr DynamicObject::Serialize(int attributeTypes) const
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{
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Dictionary::Ptr update = boost::make_shared<Dictionary>();
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ASSERT(!OwnsLock());
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ObjectLock olock(this);
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InternalSerialize(update, attributeTypes);
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/* Make sure our own InternalSerialize() method was called. */
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ASSERT(update->Contains("__marker"));
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update->Remove("__marker");
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return update;
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}
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void DynamicObject::Deserialize(const Dictionary::Ptr& update, int attributeTypes)
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{
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ASSERT(!OwnsLock());
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{
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ObjectLock olock(this);
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InternalDeserialize(update, attributeTypes);
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}
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}
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void DynamicObject::InternalSerialize(const Dictionary::Ptr& bag, int attributeTypes) const
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{
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if (attributeTypes & Attribute_Config) {
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bag->Set("__name", m_Name);
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bag->Set("__type", m_Type);
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bag->Set("methods", m_Methods);
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bag->Set("custom", m_Custom);
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bag->Set("authorities", m_Authorities);
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bag->Set("domains", m_Domains);
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}
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if (attributeTypes & Attribute_State)
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bag->Set("extensions", m_Extensions);
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/* This attribute is used by Serialize() to check that this
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* method was called. */
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bag->Set("__marker", 1);
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}
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void DynamicObject::InternalDeserialize(const Dictionary::Ptr& bag, int attributeTypes)
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{
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if (attributeTypes & Attribute_Config) {
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m_Name = bag->Get("__name");
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m_Type = bag->Get("__type");
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m_Methods = bag->Get("methods");
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m_Custom = bag->Get("custom");
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m_Authorities = bag->Get("authorities");
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m_Domains = bag->Get("domains");
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}
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if (attributeTypes & Attribute_State)
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m_Extensions = bag->Get("extensions");
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}
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DynamicType::Ptr DynamicObject::GetType(void) const
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{
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return DynamicType::GetByName(m_Type);
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}
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String DynamicObject::GetName(void) const
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{
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return m_Name;
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}
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bool DynamicObject::IsActive(void) const
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{
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return m_Active;
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}
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Array::Ptr DynamicObject::GetAuthorities(void) const
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{
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return m_Authorities;
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}
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void DynamicObject::SetAuthority(const String& type, bool value)
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{
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ASSERT(!OwnsLock());
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{
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ObjectLock olock(this);
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if (!m_Authority)
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m_Authority = boost::make_shared<Dictionary>();
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bool old_value = HasAuthority(type);
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if (old_value == value)
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return;
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m_Authority->Set(type, value);
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}
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OnAuthorityChanged(GetSelf(), type, value);
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}
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bool DynamicObject::HasAuthority(const String& type) const
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{
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if (!m_Authority)
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return true;
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return m_Authority->Get(type);
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}
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Array::Ptr DynamicObject::GetDomains(void) const
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{
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return m_Domains;
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}
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void DynamicObject::SetPrivileges(const String& instance, int privs)
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{
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m_Privileges[instance] = privs;
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}
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bool DynamicObject::HasPrivileges(const String& instance, int privs) const
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{
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if (privs == 0)
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return true;
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std::map<String, int>::const_iterator it;
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it = m_Privileges.find(instance);
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if (it == m_Privileges.end())
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return false;
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return (it->second & privs) == privs;
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}
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void DynamicObject::SetExtension(const String& key, const Object::Ptr& object)
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{
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Dictionary::Ptr extensions = m_Extensions;
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if (!extensions) {
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extensions = boost::make_shared<Dictionary>();
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m_Extensions = extensions;
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}
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extensions->Set(key, object);
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}
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Object::Ptr DynamicObject::GetExtension(const String& key)
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{
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Dictionary::Ptr extensions = m_Extensions;
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if (!extensions)
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return Object::Ptr();
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return extensions->Get(key);
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}
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void DynamicObject::ClearExtension(const String& key)
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{
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Dictionary::Ptr extensions = m_Extensions;
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if (!extensions)
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return;
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extensions->Remove(key);
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}
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void DynamicObject::Register(void)
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{
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ASSERT(!OwnsLock());
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DynamicType::Ptr dtype = GetType();
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dtype->RegisterObject(GetSelf());
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}
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void DynamicObject::Start(void)
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{
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ASSERT(!OwnsLock());
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ASSERT(!m_Active);
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m_Active = true;
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OnStarted(GetSelf());
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}
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void DynamicObject::Stop(void)
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{
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ASSERT(!OwnsLock());
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ASSERT(m_Active);
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m_Active = false;
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OnStopped(GetSelf());
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}
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void DynamicObject::OnConfigLoaded(void)
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{
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/* Nothing to do here. */
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}
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void DynamicObject::OnStateLoaded(void)
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{
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/* Nothing to do here. */
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}
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Value DynamicObject::InvokeMethod(const String& method,
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const std::vector<Value>& arguments)
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{
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Dictionary::Ptr methods;
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methods = m_Methods;
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if (!methods)
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BOOST_THROW_EXCEPTION(std::invalid_argument("Method '" + method + "' does not exist."));
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String funcName = methods->Get(method);
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if (funcName.IsEmpty())
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BOOST_THROW_EXCEPTION(std::invalid_argument("Method '" + method + "' does not exist."));
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ScriptFunction::Ptr func = ScriptFunctionRegistry::GetInstance()->GetItem(funcName);
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if (!func)
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BOOST_THROW_EXCEPTION(std::invalid_argument("Function '" + funcName + "' does not exist."));
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return func->Invoke(arguments);
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}
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void DynamicObject::DumpObjects(const String& filename, int attributeTypes)
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{
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Log(LogInformation, "base", "Dumping program state to file '" + filename + "'");
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String tempFilename = filename + ".tmp";
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std::fstream fp;
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fp.open(tempFilename.CStr(), std::ios_base::out);
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if (!fp)
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BOOST_THROW_EXCEPTION(std::runtime_error("Could not open '" + filename + "' file"));
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StdioStream::Ptr sfp = boost::make_shared<StdioStream>(&fp, false);
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BOOST_FOREACH(const DynamicType::Ptr& type, DynamicType::GetTypes()) {
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BOOST_FOREACH(const DynamicObject::Ptr& object, type->GetObjects()) {
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Dictionary::Ptr persistentObject = boost::make_shared<Dictionary>();
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persistentObject->Set("type", type->GetName());
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persistentObject->Set("name", object->GetName());
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Dictionary::Ptr update = object->Serialize(attributeTypes);
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if (!update)
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continue;
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persistentObject->Set("update", update);
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Value value = persistentObject;
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String json = value.Serialize();
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NetString::WriteStringToStream(sfp, json);
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}
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}
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sfp->Close();
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fp.close();
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#ifdef _WIN32
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_unlink(filename.CStr());
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#endif /* _WIN32 */
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if (rename(tempFilename.CStr(), filename.CStr()) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("rename")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(tempFilename));
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}
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}
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void DynamicObject::RestoreObjects(const String& filename, int attributeTypes)
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{
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Log(LogInformation, "base", "Restoring program state from file '" + filename + "'");
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std::fstream fp;
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fp.open(filename.CStr(), std::ios_base::in);
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StdioStream::Ptr sfp = boost::make_shared<StdioStream>(&fp, false);
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unsigned long restored = 0;
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String message;
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while (NetString::ReadStringFromStream(sfp, &message)) {
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Dictionary::Ptr persistentObject = Value::Deserialize(message);
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String type = persistentObject->Get("type");
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String name = persistentObject->Get("name");
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Dictionary::Ptr update = persistentObject->Get("update");
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DynamicType::Ptr dt = DynamicType::GetByName(type);
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if (!dt)
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continue;
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DynamicObject::Ptr object = dt->GetObject(name);
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if (object) {
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ASSERT(!object->IsActive());
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Log(LogDebug, "base", "Restoring object '" + name + "' of type '" + type + "'.");
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object->Deserialize(update, attributeTypes);
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object->OnStateLoaded();
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}
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restored++;
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}
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sfp->Close();
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std::ostringstream msgbuf;
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msgbuf << "Restored " << restored << " objects";
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Log(LogInformation, "base", msgbuf.str());
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}
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void DynamicObject::StopObjects(void)
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{
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BOOST_FOREACH(const DynamicType::Ptr& dt, DynamicType::GetTypes()) {
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BOOST_FOREACH(const DynamicObject::Ptr& object, dt->GetObjects()) {
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if (object->IsActive())
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object->Stop();
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}
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}
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}
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DynamicObject::Ptr DynamicObject::GetObject(const String& type, const String& name)
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{
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DynamicType::Ptr dtype = DynamicType::GetByName(type);
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return dtype->GetObject(name);
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}
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Dictionary::Ptr DynamicObject::GetCustom(void) const
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{
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return m_Custom;
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}
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