/// <summary>
/// Decreases the quality score of the peer node.
/// <para>This function is called when something goes wrong with the peer.</para>
/// <para>If the score reaches the minimal value, the tasks assigned for the node are released.</para>
/// </summary>
/// <param name="chainedHeader>Block the node wanted to download, but something went wrong during the process.</param>
protected void OnStalling(ChainedHeader chainedHeader)
{
this.logger.LogTrace("({0}:'{1}')", nameof(chainedHeader), chainedHeader.HashBlock);
BlockPullerBehavior behavior = null;
lock (this.lockObject)
{
this.assignedBlockTasks.TryGetValue(chainedHeader.HashBlock, out behavior);
}
if (behavior != null)
{
double penalty = -1;
this.logger.LogTrace("Block '{0}' assigned to peer {1:x}, penalty is {2}.", chainedHeader.HashBlock, behavior.GetHashCode(), penalty);
behavior.UpdateQualityScore(penalty);
if (Math.Abs(behavior.QualityScore - QualityScore.MinScore) < 0.00001)
{
behavior.ReleaseAll(false);
this.AssignPendingVectors();
}
}
else
{
this.logger.LogTrace("Block '{0}' not assigned to any peer.", chainedHeader.HashBlock);
this.AssignPendingVectors();
}
this.logger.LogTrace("(-)");
}
/// <summary>
/// Decreases the quality score of the peer node.
/// <para>This function is called when something goes wrong with the peer.</para>
/// <para>If the score reaches the minimal value, the tasks assigned for the node are released.</para>
/// </summary>
/// <param name="chainedBlock">Block the node wanted to download, but something went wrong during the process.</param>
protected void OnStalling(ChainedBlock chainedBlock)
{
this.logger.LogTrace($"({nameof(chainedBlock)}.{nameof(chainedBlock.HashBlock)}:'{chainedBlock.HashBlock}')");
BlockPullerBehavior behavior = null;
lock (this.lockObject)
{
this.assignedBlockTasks.TryGetValue(chainedBlock.HashBlock, out behavior);
}
if (behavior != null)
{
double penalty = this.peerQuality.CalculateNextBlockTimeoutQualityPenalty();
this.logger.LogTrace($"Block '{chainedBlock.HashBlock}' assigned to '{behavior.GetHashCode():x}', penalty is {penalty}.");
behavior.UpdateQualityScore(penalty);
if (Math.Abs(behavior.QualityScore - QualityScore.MinScore) < 0.00001)
{
behavior.ReleaseAll();
this.AssignPendingVectors();
}
}
else
{
this.logger.LogTrace($"Block '{chainedBlock.HashBlock}' not assigned to any peer.");
this.AssignPendingVectors();
}
this.logger.LogTrace("(-)");
}
protected void OnStalling(ChainedBlock chainedBlock)
{
BlockPullerBehavior behavior = null;
if (this.map.TryGetValue(chainedBlock.HashBlock, out behavior))
{
behavior.QualityScore = Math.Max(MinQualityScore, behavior.QualityScore - 1);
if (behavior.QualityScore == MinQualityScore)
{
// TODO: this does not necessarily mean the node is slow
// the best way is to check the nodes download speed, how
// many kb/s the node for the node download speed.
behavior.ReleaseAll();
AssignPendingVectors();
}
}
else
{
AssignPendingVectors();
}
}
