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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.
*/
#ifdef _WIN32
#include <zookeeper.h>
#else
#include <zookeeper/zookeeper.h>
#endif
#include <boost/shared_ptr.hpp>
#include <boost/thread/condition_variable.hpp>
#include <boost/thread/mutex.hpp>
#include "UserBitShared.pb.h"
#ifndef ZOOKEEPER_CLIENT_H
#define ZOOKEEPER_CLIENT_H
namespace Drill {
class ZookeeperClient{
public:
static std::string s_defaultDrillPath;
ZookeeperClient(const std::string& drillPath = s_defaultDrillPath);
~ZookeeperClient();
static ZooLogLevel getZkLogLevel();
// comma separated host:port pairs, each corresponding to a zk
// server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002
void close();
const std::string& getError() const{return m_err;}
// return unshuffled list of drillbits
int getAllDrillbits(const std::string& connectStr, std::vector<std::string>& drillbits);
// picks the index drillbit and returns the corresponding endpoint object
int getEndPoint(const std::string& drillbit, exec::DrillbitEndpoint& endpoint);
void watcher(zhandle_t *zzh, int type, int state, const char *path, void* context);
private:
boost::shared_ptr<zhandle_t> p_zh;
clientid_t m_id;
int m_state;
std::string m_err;
boost::mutex m_cvMutex;
// Condition variable to signal connection callback has been processed
boost::condition_variable m_cv;
bool m_bConnecting;
std::string m_path;
};
} /* namespace Drill */
#endif /* ZOOKEEPER_H */
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