icinga2/lib/icinga/usergroup.cpp

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/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012 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 "i2-icinga.h"
using namespace icinga;
boost::mutex UserGroup::m_Mutex;
map<String, vector<User::WeakPtr> > UserGroup::m_MembersCache;
bool UserGroup::m_MembersCacheNeedsUpdate = false;
Timer::Ptr UserGroup::m_MembersCacheTimer;
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REGISTER_TYPE(UserGroup);
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UserGroup::UserGroup(const Dictionary::Ptr& properties)
: DynamicObject(properties)
{
RegisterAttribute("display_name", Attribute_Config, &m_DisplayName);
}
UserGroup::~UserGroup(void)
{
InvalidateMembersCache();
}
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/**
* @threadsafety Always.
*/
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void UserGroup::OnRegistrationCompleted(void)
{
ASSERT(!OwnsLock());
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InvalidateMembersCache();
}
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/**
* @threadsafety Always.
*/
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String UserGroup::GetDisplayName(void) const
{
if (!m_DisplayName.IsEmpty())
return m_DisplayName;
else
return GetName();
}
/**
* @threadsafety Always.
*/
UserGroup::Ptr UserGroup::GetByName(const String& name)
{
DynamicObject::Ptr configObject = DynamicObject::GetObject("UserGroup", name);
if (!configObject)
BOOST_THROW_EXCEPTION(invalid_argument("UserGroup '" + name + "' does not exist."));
return dynamic_pointer_cast<UserGroup>(configObject);
}
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/**
* @threadsafety Always.
*/
set<User::Ptr> UserGroup::GetMembers(void) const
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{
set<User::Ptr> users;
{
boost::mutex::scoped_lock lock(m_Mutex);
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BOOST_FOREACH(const User::WeakPtr& wuser, m_MembersCache[GetName()]) {
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User::Ptr user = wuser.lock();
if (!user)
continue;
users.insert(user);
}
}
return users;
}
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/**
* @threadsafety Always.
*/
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void UserGroup::InvalidateMembersCache(void)
{
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boost::mutex::scoped_lock lock(m_Mutex);
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if (m_MembersCacheNeedsUpdate)
return; /* Someone else has already requested a refresh. */
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if (!m_MembersCacheTimer) {
m_MembersCacheTimer = boost::make_shared<Timer>();
m_MembersCacheTimer->SetInterval(0.5);
m_MembersCacheTimer->OnTimerExpired.connect(boost::bind(&UserGroup::RefreshMembersCache));
m_MembersCacheTimer->Start();
}
m_MembersCacheNeedsUpdate = true;
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}
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/**
* @threadsafety Always.
*/
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void UserGroup::RefreshMembersCache(void)
{
{
boost::mutex::scoped_lock lock(m_Mutex);
if (!m_MembersCacheNeedsUpdate)
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return;
m_MembersCacheNeedsUpdate = false;
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}
Logger::Write(LogInformation, "icinga", "Updating UserGroup members cache.");
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map<String, vector<User::WeakPtr> > newMembersCache;
BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("User")) {
const User::Ptr& user = static_pointer_cast<User>(object);
Dictionary::Ptr dict;
dict = user->GetGroups();
if (dict) {
ObjectLock mlock(dict);
Value UserGroup;
BOOST_FOREACH(tie(tuples::ignore, UserGroup), dict) {
newMembersCache[UserGroup].push_back(user);
}
}
}
boost::mutex::scoped_lock lock(m_Mutex);
m_MembersCache.swap(newMembersCache);
}