/// <summary>
/// Gets the cache latency.
/// </summary>
/// <param name="dataCache">The data cache.</param>
/// <returns></returns>
public RequestLatency <DataCache> GetCacheLatency(DataCache dataCache)
{
return(CacheLatency.FirstOrDefault(c => c.CastedPublisher == dataCache));
}
public static StreamVideoController ReadInputDataSet(string fileName)
{
var dataSet = System.IO.File.ReadAllLines(fileName);
var firstLine = dataSet[0].Split(' ');
var numOfVideos = int.Parse(firstLine[0]);
var numOfEndPoints = int.Parse(firstLine[1]);
var numOfRequests = int.Parse(firstLine[2]);
var numOfCaches = int.Parse(firstLine[3]);
var cacheSize = int.Parse(firstLine[4]);
//Process videos
var videos = new List <Video>(numOfVideos);
var videoSizes = dataSet[1].Split(' ');
foreach (var index in Enumerable.Range(0, numOfVideos))
{
videos.Add(new Video
{
ID = index,
SizeInMb = int.Parse(videoSizes[index])
});
}
var caches = new List <CacheServer>();
foreach (var index in Enumerable.Range(0, numOfCaches))
{
caches.Add(new CacheServer
{
ID = index,
SizeInMb = cacheSize,
Videos = new List <Video>()
});
}
var endPoints = new List <EndPoint>(numOfEndPoints);
var rowIndex = 2;
var endPointIndex = 0;
while (endPointIndex < numOfEndPoints)
{
var endPointInfo = dataSet[rowIndex].Split(' ');
var endPointLatency = long.Parse(endPointInfo[0]);
var numOfConnectedCaches = int.Parse(endPointInfo[1]);
var _endPoint = new EndPoint
{
ID = endPointIndex,
LatencyToDataCenterInMs = endPointLatency,
CacheLatencyList = new List <CacheLatency>()
};
if (numOfConnectedCaches == 0)
{
endPoints.Add(_endPoint);
endPointIndex++;
rowIndex++;
continue;
}
rowIndex++;
for (int i = 0; i < numOfConnectedCaches; i++)
{
var cacheLatencyInfo = dataSet[rowIndex].Split(' ');
var cacheId = int.Parse(cacheLatencyInfo[0]);
var cacheLatency = long.Parse(cacheLatencyInfo[1]);
var cacheLatencyEntity = new CacheLatency
{
CacheId = cacheId,
LatencyInMs = cacheLatency
};
_endPoint.CacheLatencyList.Add(cacheLatencyEntity);
if (i + 1 < numOfConnectedCaches)
{
rowIndex++;
}
}
endPoints.Add(_endPoint);
endPointIndex++;
rowIndex++;
}
var requestDescriptions = new List <RequestDescription>(numOfRequests);
foreach (var i in Enumerable.Range(0, numOfRequests))
{
var request = dataSet[rowIndex + i].Split(' ');
var videoId = int.Parse(request[0]);
var endPointId = int.Parse(request[1]);
var numOfVideoRequests = int.Parse(request[2]);
requestDescriptions.Add(new RequestDescription
{
VideoId = videoId,
FromEndPointId = endPointId,
NumOfRequests = numOfVideoRequests
});
}
return(new StreamVideoController
{
Videos = videos,
EndPoints = endPoints,
Requests = requestDescriptions,
Caches = caches
});
}
