//-------------------------------------------//
/// <summary>
/// When the connection has been inactive for the specified
/// 'timeout' number of milliseconds.
/// </summary>
protected virtual void OnTimeout()
{
// remove connection from view
ManagerConnections.Remove(this);
// close the connection
Close();
_locker.OnLock = null;
_locker.OnUnlock = null;
}
/// <summary>
/// Begin reading the files.
/// </summary>
public void Run()
{
_lock.Take();
// is the extraction already running? yes, skip
if (Running)
{
// did a connection timeout?
if (_timeout.Run)
{
// no, interrupted
_lock.Release();
return;
}
// nullify connection
if (_connection != null)
{
_connection.Close();
_connection = null;
}
// notify of the connection timeout
Log.Warning("Connection to file was unable to be established '" + _files.Current + "'.");
}
// no, start running
Running = true;
// are there more files?
if (_files.Dequeue())
{
// yes, get a parser for the file
_parser = Extractor.GetParser();
// reset the decoder
Decoder.Reset();
// reset timeout
_timeout.Reset(Timeout);
_connection = null;
_lock.Release();
// get a reader for the next file
ManagerConnections.Get <ConnectionLocal>(_files.Current, new Act <ConnectionLocal>(OnConnection));
}
else
{
// no, is the callback set? run
if (OnComplete != null)
{
OnComplete.Run();
}
_lock.Release();
}
}
/// <summary>
/// Get average statistics of the drive of the specified directory path. Resulting value units
/// are bytes and per second.
/// Note : This method writes a Megabyte to the Stream and then clears it.
/// </summary>
public static void GetStreamStats(string directory, out uint seeks, out uint writes, out uint reads)
{
// create a test file
string filePath = ManagerResources.CreateFilePath(directory, ".drivetest");
// get a stream to the created test file
Teple <LockShared, ByteBuffer> resource;
ManagerConnections.Get <ByteBuffer, ConnectionLocal>(filePath, out resource);
ByteBuffer stream = resource.ArgB;
// get a seek, read and write speed for the Author
Timekeeper time = new Timekeeper();
// write a Megabyte
time.Start();
stream.Write(Generic.Series <byte>((int)Global.Megabyte, 50));
stream.Stream.Flush();
time.Stop();
// derive the number of bytes written per second
writes = (uint)(Global.Megabyte / (time.Milliseconds / 1000));
// perform a number of seeks
time.Start();
for (int i = 1000; i >= 0; --i)
{
stream.Position = 0;
stream.Write((byte)0);
stream.Stream.Flush();
stream.Position = (long)Global.Megabyte - 1L;
stream.Write((byte)0);
stream.Stream.Flush();
}
time.Stop();
// derive the number of seeks per second
seeks = (uint)(1000 / (time.Milliseconds / 1000));
stream.Position = 0;
// read the Megabyte
time.Start();
stream.ReadBytes((int)Global.Megabyte);
stream.Stream.Flush();
time.Stop();
// derive the number of bytes read per second
reads = (uint)(Global.Megabyte / (time.Milliseconds / 1000));
// release the connection
resource.ArgA.Release();
// remove the files
File.Delete(filePath);
}
/// <summary>
/// Load the configuration inline if the callback is null.
/// </summary>
public void Load(IAction <Configuration> onLoad = null)
{
_lock.Take();
// check state
switch (State)
{
case AssetState.Unloaded:
case AssetState.Broken:
State = AssetState.Loading;
// inline load or callback?
if (onLoad == null)
{
// no callback so load immediately
// get the connection
ConnectionLocal connection = ManagerConnections.Get <ConnectionLocal>(_path);
// ensure the file modes are right
connection.FileMode = System.IO.FileMode.OpenOrCreate;
connection.FileAccess = System.IO.FileAccess.Read;
// get the stream
Teple <LockShared, ByteBuffer> resource;
connection.Get(out resource);
// run load logic
OnLoad(resource.ArgB);
resource.ArgA.Release();
}
else
{
_onLoad += onLoad;
// get the connection
ConnectionLocal connection = ManagerConnections.Get <ConnectionLocal>(_path);
// ensure the file modes are right
connection.FileMode = System.IO.FileMode.OpenOrCreate;
connection.FileAccess = System.IO.FileAccess.Read;
// callback load
connection.Get(new Act <ByteBuffer>(OnLoad));
}
break;
case AssetState.Loading:
_onLoad += onLoad;
_lock.Release();
break;
default:
_lock.Release();
onLoad.ArgA = this;
onLoad.Run();
break;
}
}
/// <summary>
/// Save the configuration.
/// </summary>
public void Save(Act <Configuration> onSave = null)
{
_lock.Take();
if (State.Is(AssetState.Loaded) || State.Is(AssetState.Unloaded))
{
State = AssetState.Saving;
if (onSave == null)
{
// get the connection
ConnectionLocal connection = ManagerConnections.Get <ConnectionLocal>(_path);
// ensure the file modes are right
connection.FileMode = System.IO.FileMode.Truncate;
connection.FileAccess = System.IO.FileAccess.Write;
connection.FileShare = System.IO.FileShare.Read;
// get the stream
Teple <LockShared, ByteBuffer> resource;
connection.Get(out resource);
// run save logic
OnSave(resource.ArgB);
resource.ArgA.Release();
}
else
{
onSave.ArgA = this;
// get the connection
ConnectionLocal connection = ManagerConnections.Get <ConnectionLocal>(_path);
// ensure the file modes are right
connection.FileMode = System.IO.FileMode.Create;
connection.FileAccess = System.IO.FileAccess.Write;
// callback save
connection.Get(new Act <ByteBuffer>(new ActionPair <ByteBuffer>(OnSave, s => onSave.Run())));
}
}
else
{
_lock.Release();
}
}
/// <summary>
/// Read addresses into the buffer for the crawlers to comsume.
/// </summary>
protected void Read(ByteBuffer reader)
{
// stop the timeout
_timeout.Run = false;
// read the next buffer
int count = reader.ReadBytes(_buffer, 0, Global.BufferSizeLocal);
// get the characters5
count = Decoder.GetChars(_buffer, 0, count, _chars, 0);
// run the parser
_parser.Next(_chars, 0, count);
// was the file finished?
if (reader.Empty)
{
// yes, no longer running
Running = false;
// is the 'OnFile' callback set?
if (OnFile != null)
{
// yes, run
OnFile.ArgA = _files.Current;
OnFile.Run();
}
// read the next file
Run();
}
else
{
// get the reader for the next buffer
ManagerConnections.Get <ByteBuffer, ConnectionLocal>(_files.Current, new Act <ByteBuffer>(Read));
}
}
/// <summary>
/// Manually stop the connection between this configuration used for saving/loading.
/// </summary>
public void StopConnection()
{
ManagerConnections.Remove <ConnectionLocal>(_path);
}