public ExponentialBackoff(TimeSpan minBackoff, TimeSpan maxBackoff, TimeSpan deltaBackoff)
{
Guard.ArgumentGreaterOrEqualThan(0, minBackoff.TotalMilliseconds, "minBackoff");
Guard.ArgumentGreaterOrEqualThan(0, maxBackoff.TotalMilliseconds, "maxBackoff");
Guard.ArgumentGreaterOrEqualThan(0, deltaBackoff.TotalMilliseconds, "deltaBackoff");
Guard.ArgumentGreaterOrEqualThan(minBackoff.TotalMilliseconds, maxBackoff.TotalMilliseconds, "maxBackoff");
this.minBackoffMilliseconds = minBackoff.TotalMilliseconds;
this.maxBackoffMilliseconds = maxBackoff.TotalMilliseconds;
this.deltaBackoffMilliseconds = deltaBackoff.TotalMilliseconds;
}
/// <summary>
/// Initializes a new instance of the <see cref="BufferedEventPublisher{TEntry}" /> class.
/// </summary>
/// <param name="sinkId">An identifier for the sink.</param>
/// <param name="eventPublisher">The event publisher.</param>
/// <param name="bufferingInterval">The buffering interval.</param>
/// <param name="bufferingCount">The buffering count.</param>
/// <param name="maxBufferSize">The maximum number of entries that can be buffered before the sink starts dropping entries.</param>
/// <param name="cancellationToken">Cancels any pending operation.</param>
/// <exception cref="System.ArgumentOutOfRangeException">BufferingCount out of range.</exception>
/// <exception cref="System.ArgumentException">Argument valdation error.</exception>
public BufferedEventPublisher(string sinkId, Func <IList <TEntry>, Task <int> > eventPublisher, TimeSpan bufferingInterval, int bufferingCount, int maxBufferSize, CancellationToken cancellationToken)
{
Guard.ArgumentNotNullOrEmpty(sinkId, "sinkId");
Guard.ArgumentNotNull(eventPublisher, "eventPublisherAction");
Guard.ArgumentGreaterOrEqualThan(500, maxBufferSize, "maxBufferSize");
Guard.ArgumentNotNull(cancellationToken, "cancellationToken");
Guard.ArgumentGreaterOrEqualThan(0, bufferingCount, "bufferingCount");
Guard.ArgumentIsValidTimeout(bufferingInterval, "bufferingInterval");
if (maxBufferSize < (bufferingCount * 3) && bufferingCount != int.MaxValue)
{
throw new ArgumentException(string.Format(CultureInfo.CurrentCulture, Resources.MaxBufferSizeShouldBeLargerThanBufferingCount, maxBufferSize, bufferingCount), "maxBufferSize");
}
// throw if not auto flush parameter was supplied
if (bufferingInterval == Timeout.InfiniteTimeSpan && bufferingCount == 0)
{
throw new ArgumentException(Resources.InvalidBufferingArguments);
}
this.sinkId = sinkId;
this.eventPublisher = eventPublisher;
this.bufferingCount = bufferingCount;
//// set minimal interval if less than default value (MinimumInterval).
this.bufferingInterval = (bufferingInterval < MinimumInterval && bufferingInterval != Timeout.InfiniteTimeSpan) ? MinimumInterval : bufferingInterval;
this.maxBufferSize = maxBufferSize;
this.maxBatchSize = this.bufferingCount == 0 ? this.maxBufferSize : this.bufferingCount;
this.cancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(new[] { cancellationToken });
// defer initialization to avoid resource consumption as much as possible
this.buffer = new Lazy <BlockingCollection <TEntry> >(() =>
{
this.StartBackgroundTask();
return(new BlockingCollection <TEntry>(this.maxBufferSize));
});
}
