/// <summary>
/// Opens the existing table.
/// </summary>
/// <returns></returns>
private FasterConversationTable OpenTable()
{
var dbPath = Path.GetFullPath(@"c:\temp\0001\");
var table = FasterConversationTable.Open(dbPath);
return(table);
}
public void Setup()
{
_conversationTable = FasterConversationTable.Create($"{dataset}.{loadTableRun}", 3000000);
using (var loader = _conversationTable.GetStreamer())
using (var pcapReader = new SharpPcapReader(dataset))
{
while (pcapReader.GetNextFrame(out var rawFrame))
{
loader.AddFrame(rawFrame);
}
loader.Close();
}
}
/// <summary>
/// Creates a conversation table from the given collection of <paramref name="frames"/>.
/// </summary>
/// <param name="frames">Source frames used to populate conversation table.</param>
/// <param name="conversationTablePath">The path to folder where conversation table is to be saved.</param>
/// <param name="token">The cancellation token for interrupting the operation.</param>
/// <returns>Newly created conversation table.</returns>
public FasterConversationTable CreateConversationTable(IEnumerable <RawCapture> frames, string conversationTablePath, int framesCapacity, CancellationToken?token = null)
{
var flowTable = FasterConversationTable.Create(conversationTablePath, framesCapacity);
using (var loader = flowTable.GetStreamer())
{
foreach (var frame in frames)
{
loader.AddFrame(frame);
if (token?.IsCancellationRequested ?? false)
{
break;
}
}
}
flowTable.SaveChanges();
return(flowTable);
}
public void TestCreateTable()
{
var sw = new Stopwatch();
var pcapPath = Path.GetFullPath(@"data\PCAP\modbus.pcap");
var dbPath = Path.GetFullPath(@"c:\temp\0001\");
if (Directory.Exists(dbPath))
{
Directory.Delete(dbPath, true);
}
var flowTable = FasterConversationTable.Create(dbPath, framesCapacity: 1700000);
var frameNumber = 0;
sw.Restart();
using (var loader = flowTable.GetStreamer())
using (var pcapReader = new SharpPcapReader(pcapPath))
{
while (pcapReader.GetNextFrame(out var rawFrame))
{
frameNumber++;
loader.AddFrame(rawFrame);
}
loader.Close();
}
Console.WriteLine($"--- LOADED --- [{sw.Elapsed}]");
sw.Restart();
Console.WriteLine($"Convs= {flowTable.ConversationsCount} [{sw.Elapsed}]");
sw.Restart();
Console.WriteLine($"Frames= {flowTable.FramesCount} /{frameNumber} [{sw.Elapsed}]");
sw.Restart();
flowTable.SaveChanges();
Console.WriteLine($"--- COMMITED --- [{sw.Elapsed}]");
sw.Restart();
Console.WriteLine($"Frames= {flowTable.FramesCount} / {frameNumber} [{sw.Elapsed}]");
flowTable.Dispose();
}
/// <summary>
/// Reads all packets available in conversation <paramref name="table"/>.
/// </summary>
/// <param name="table">The conversation table.</param>
/// <returns>A collection of packets.</returns>
public IEnumerable <(long Ticks, Packet Packet)> ReadAllPackets(FasterConversationTable table)
{
return(table.ProcessFrames <(long, Packet)>(table.FrameKeys, new PacketProcessor()));
}
