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/*
* Copyright (c) 2014 Netflix, Inc.
* 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 NETFLIX, INC. 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 NETFLIX 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 DIALDISCOVERY_H
#define DIALDISCOVERY_H
#include "DialServer.h"
#include <map>
using namespace std;
class DialDiscovery
{
public:
/**
* Create a singleton
*/
static DialDiscovery* create(void);
/**
* Get a pointer to the singleton
*/
static DialDiscovery* instance(void);
~DialDiscovery();
/**
* Initialize the discover object. This will kick off a periodic
* worker thread that will poll for DIAL servers.
*
*/
void init();
/**
* Get the list of servers that have been discovered.
*
* @param[out] list List of DIAL servers. Returns an empty list if there
* are no servers.
*/
void getServerList(vector<DialServer*>& list);
/**
* Get a DIAL server based on friendly name
*
* @param[in] friendlyName Friendly name of DIAL server
* @param[out] server Server object (if successful)
*
* @return true if successful, false otherwise
*/
bool getServer(
const string& friendlyName,
DialServer &server );
private:
DialDiscovery();
void updateServerList(string& server);
static void *receiveResponses(void *p);
static void *send_mcast(void *p);
void processServer(char *pResponse);
void cleanServerList();
void resetDiscovery();
pthread_t _mcastThread;
pthread_t _responseThread;
typedef map<string, DialServer*> ServerMap;
ServerMap mServerMap;
static DialDiscovery* sDiscovery;
};
#endif // DIALDISCOVERY_H