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wlan-cloud-lib-cppkafka/include/cppkafka/zookeeper/zookeeper_watcher.h
2016-06-11 08:18:09 -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_WATCHER_H
#define CPPKAFKA_ZOOKEEPER_WATCHER_H
#include <memory>
#include <string>
#include <chrono>
#include <zookeeper/zookeeper.h>
namespace cppkafka {
class ZookeeperWatcher {
public:
static const std::chrono::milliseconds DEFAULT_RECEIVE_TIMEOUT;
ZookeeperWatcher(const std::string& endpoint);
ZookeeperWatcher(const std::string& endpoint, std::chrono::milliseconds receive_timeout);
std::string get_brokers();
private:
using HandlePtr = std::unique_ptr<zhandle_t, decltype(&zookeeper_close)>;
static const std::string BROKERS_PATH;
static void handle_event_proxy(zhandle_t* zh, int type, int state, const char* path,
void* ctx);
void handle_event(int type, int state, const char* path);
HandlePtr handle_;
};
} // cppkafka
#endif // CPPKAFKA_ZOOKEEPER_WATCHER_H