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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "PreviewSessionManager.h"
#include "PreviewSessionState.h"
#include "qpid/framing/reply_exceptions.h"
#include "qpid/log/Statement.h"
#include "qpid/log/Helpers.h"
#include "qpid/memory.h"
#include <boost/bind.hpp>
#include <boost/range.hpp>
#include <algorithm>
#include <functional>
#include <ostream>
namespace qpid {
namespace broker {
using namespace sys;
using namespace framing;
PreviewSessionManager::PreviewSessionManager(uint32_t a) : ack(a) {}
PreviewSessionManager::~PreviewSessionManager() {}
// FIXME aconway 2008-02-01: pass handler*, allow open unattached.
std::auto_ptr<PreviewSessionState> PreviewSessionManager::open(
PreviewSessionHandler& h, uint32_t timeout_)
{
Mutex::ScopedLock l(lock);
std::auto_ptr<PreviewSessionState> session(
new PreviewSessionState(this, &h, timeout_, ack));
active.insert(session->getId());
for_each(observers.begin(), observers.end(),
boost::bind(&Observer::opened, _1,boost::ref(*session)));
return session;
}
void PreviewSessionManager::suspend(std::auto_ptr<PreviewSessionState> session) {
Mutex::ScopedLock l(lock);
active.erase(session->getId());
session->suspend();
session->expiry = AbsTime(now(),session->getTimeout()*TIME_SEC);
if (session->mgmtObject.get() != 0)
session->mgmtObject->set_expireTime ((uint64_t) Duration (session->expiry));
suspended.push_back(session.release()); // In expiry order
eraseExpired();
}
std::auto_ptr<PreviewSessionState> PreviewSessionManager::resume(const Uuid& id)
{
Mutex::ScopedLock l(lock);
eraseExpired();
if (active.find(id) != active.end())
throw SessionBusyException(
QPID_MSG("Session already active: " << id));
Suspended::iterator i = std::find_if(
suspended.begin(), suspended.end(),
boost::bind(std::equal_to<Uuid>(), id, boost::bind(&PreviewSessionState::getId, _1))
);
if (i == suspended.end())
throw InvalidArgumentException(
QPID_MSG("No suspended session with id=" << id));
active.insert(id);
std::auto_ptr<PreviewSessionState> state(suspended.release(i).release());
return state;
}
void PreviewSessionManager::erase(const framing::Uuid& id)
{
Mutex::ScopedLock l(lock);
active.erase(id);
}
void PreviewSessionManager::eraseExpired() {
// Called with lock held.
if (!suspended.empty()) {
Suspended::iterator keep = std::lower_bound(
suspended.begin(), suspended.end(), now(),
boost::bind(std::less<AbsTime>(), boost::bind(&PreviewSessionState::expiry, _1), _2));
if (suspended.begin() != keep) {
QPID_LOG(debug, "Expiring sessions: " << log::formatList(suspended.begin(), keep));
suspended.erase(suspended.begin(), keep);
}
}
}
void PreviewSessionManager::add(const intrusive_ptr<Observer>& o) {
observers.push_back(o);
}
}} // namespace qpid::broker
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