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wlan-cloud-lib-cppkafka/include/cppkafka/zookeeper/zookeeper_pool.h
2016-06-12 10:43:38 -07:00

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/*
* Copyright (c) 2016, Matias Fontanini
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef CPPKAFKA_ZOOKEEPER_POOL_H
#define CPPKAFKA_ZOOKEEPER_POOL_H
#include <map>
#include <string>
#include <chrono>
#include <mutex>
#include "zookeeper/zookeeper_watcher.h"
namespace cppkafka {
class ZookeeperSubscriber;
class ZookeeperPool {
public:
static ZookeeperPool& instance();
ZookeeperSubscriber subscribe(const std::string& endpoint,
std::chrono::milliseconds receive_timeout,
ZookeeperWatcher::WatcherCallback callback);
void unsubscribe(const ZookeeperSubscriber& subscriber);
std::string get_brokers(const std::string& endpoint);
size_t get_subscriber_count(const std::string& endpoint) const;
private:
using WatchersMap = std::map<std::string, ZookeeperWatcher>;
WatchersMap watchers_;
mutable std::mutex watchers_mutex_;
};
} // cppkafka
#endif // CPPKAFKA_ZOOKEEPER_POOL_H