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#ifndef QPID_ACL_CONNECTIONCOUNTER_H
#define QPID_ACL_CONNECTIONCOUNTER_H
/*
*
* 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 "qpid/broker/ConnectionObserver.h"
#include "qpid/sys/Mutex.h"
#include <boost/iterator/iterator_concepts.hpp>
#include <map>
namespace qpid {
namespace broker {
class Connection;
}
namespace acl {
class Acl;
/**
* Terminate client connections when a user tries to create 'too many'.
* Terminate hostIp connections when an IP host tries to create 'too many'.
*/
class ConnectionCounter : public broker::ConnectionObserver
{
private:
typedef std::map<std::string, uint32_t> connectCountsMap_t;
enum CONNECTION_PROGRESS { C_CREATED=1, C_OPENED=2 };
Acl& acl;
uint16_t nameLimit;
uint16_t hostLimit;
uint16_t totalLimit;
uint16_t totalCurrentConnections;
qpid::sys::Mutex dataLock;
/** Records per-connection state */
connectCountsMap_t connectProgressMap;
/** Records per-username counts */
connectCountsMap_t connectByNameMap;
/** Records per-host counts */
connectCountsMap_t connectByHostMap;
/** Given a connection's management ID, return the client host name */
std::string getClientHost(const std::string mgmtId);
/** Return approval for proposed connection */
bool limitApproveLH(connectCountsMap_t& theMap,
const std::string& theName,
uint16_t theLimit,
bool emitLog);
/** Record a connection.
* @return indication if user/host is over its limit */
bool countConnectionLH(connectCountsMap_t& theMap,
const std::string& theName,
uint16_t theLimit,
bool emitLog);
/** Release a connection */
void releaseLH(connectCountsMap_t& theMap,
const std::string& theName,
uint16_t theLimit);
public:
ConnectionCounter(Acl& acl, uint16_t nl, uint16_t hl, uint16_t tl);
~ConnectionCounter();
// ConnectionObserver interface
void connection(broker::Connection& connection);
void closed(broker::Connection& connection);
// Connection counting
bool approveConnection(const broker::Connection& conn);
void setUserId(const broker::Connection& connection, const std::string& username);
};
}} // namespace qpid::ha
#endif /*!QPID_ACL_CONNECTIONCOUNTER_H*/
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