private ServerInstance TryStart()
{
if (_isDisposed)
{
throw new ObjectDisposedException(nameof(LambdaSimulator));
}
if (_currentExecutionCount >= _maxConcurrency)
{
return(null);
}
_currentExecutionCount++;
if (_concurrentQueue.TryDequeue(out var serverInstance))
{
// If instance is too old, recycle it.
if (serverInstance.ActivationTime.Add(_maxInstanceLifetime) < DateTime.UtcNow)
{
serverInstance.Dispose();
serverInstance = new ServerInstance(_createWebHostBuilder, _instanceColdStartDelay);
}
}
else
{
serverInstance = new ServerInstance(_createWebHostBuilder, _instanceColdStartDelay);
}
return(serverInstance);
}
private void Finish(ServerInstance serverInstance)
{
if (!_isDisposed)
{
_concurrentQueue.Enqueue(serverInstance);
_currentExecutionCount--;
}
}
