protected override async Task ExecuteAsync(CancellationToken stopCancellationToken)
{
while (!stopCancellationToken.IsCancellationRequested)
{
try
{
var currentBlock = await BlockHeightTracker.GetCurrentBlockHeightAsync(stopCancellationToken).ConfigureAwait(false);
if (currentBlock == null || !long.TryParse(currentBlock.Height, out var height) || height <= 0)
{
continue;
}
height = height - 1;
long nextBlockHeight = 0;
using (var scope = ServiceScopeFactory.CreateScope())
{
var db = scope.ServiceProvider.GetRequiredService <PoolContext>();
var nextBlock = await db.Blocks.Where(i => !db.BlockStates.Any(x => x.Height == i.Height) && i.Height < height).OrderBy(i => i.Height).FirstOrDefaultAsync(stopCancellationToken);
if (nextBlock != null)
{
nextBlockHeight = nextBlock.Height;
}
}
if (nextBlockHeight > 0)
{
await ProcessBlockStateAsync(nextBlockHeight, stopCancellationToken).ConfigureAwait(false);
}
else
{
lock (_resetEvent)
if (_resetEvent.IsSet)
{
_resetEvent.Reset();
}
while (!_resetEvent.IsSet)
{
stopCancellationToken.ThrowIfCancellationRequested();
if (_resetEvent.Wait(10000))
{
break;
}
}
}
}
catch (OperationCanceledException) when(stopCancellationToken.IsCancellationRequested)
{
return;
}
catch (Exception ex)
{
Logger.LogError(ex, "An unhandled exception occured while trying to update block state, will retry in 30 seconds.");
await Task.Delay(TimeSpan.FromSeconds(30), stopCancellationToken).ConfigureAwait(false);
}
}
}
protected override async Task ExecuteAsync(CancellationToken stopCancellationToken)
{
long lastPassHeight = 0;
while (!stopCancellationToken.IsCancellationRequested)
{
try
{
if (!_resetEvent.IsSet)
{
_resetEvent.Wait(TimeSpan.FromMinutes(1), stopCancellationToken);
}
var currentBlock = await BlockHeightTracker.GetCurrentBlockHeightAsync(stopCancellationToken);
var currentPassHeight = long.Parse(currentBlock.Height);
if (!await HandleCurrentPassAsync(currentPassHeight - 1, stopCancellationToken) && currentPassHeight == lastPassHeight)
{
var blockAfterPass = await BlockHeightTracker.GetCurrentBlockHeightAsync(stopCancellationToken);
if (blockAfterPass.Height == currentBlock.Height)
{
lock (_resetEvent)
if (_resetEvent.IsSet)
{
_resetEvent.Reset();
}
}
}
lastPassHeight = currentPassHeight;
}
catch (OperationCanceledException) when(stopCancellationToken.IsCancellationRequested)
{
return;
}
catch (Exception ex)
{
Logger.LogError(ex, "An unhandled exception occured processing account history, will try again");
}
}
}