/// <summary>
/// Instantiate a rate limited IZipkinSender which use an underlying IZipkinSender to send data.
/// The average sending rate is given by maxSendRequest / duration, instantaneous rate can be much higher.
/// </summary>
/// <param name="sender">The underlying IZipkinSender</param>
/// <param name="maxSendRequest">The maximum send requests per duration aka the bucket size</param>
/// <param name="duration">TimeSpan necessary to refill the bucket</param>
public RateLimiterZipkinSender(IZipkinSender sender, int maxSendRequest = 15, TimeSpan?duration = null)
{
_underlyingSender = sender;
MaxSendRequests = maxSendRequest;
Duration = duration ?? TimeSpan.FromSeconds(1);
_logPeriod = TimeSpan.FromTicks(Duration.Ticks * 10);
_requestsReceived = 0;
_throttledRequests = 0;
_currentLogPeriod = new Stopwatch();
_bucket = MaxSendRequests;
_timeSinceLastRequest = Stopwatch.StartNew();
Rate = MaxSendRequests / Duration.TotalMilliseconds;
}
public ZipkinTracer(IZipkinSender sender, ISpanSerializer spanSerializer, IStatistics statistics = null)
{
if (sender == null)
{
throw new ArgumentNullException("sender", "You have to specify a non-null sender for Zipkin tracer.");
}
Statistics = statistics ?? new Statistics();
_spanSender = sender;
if (spanSerializer == null)
{
throw new ArgumentNullException("spanSerializer", "You have to specify a non-null span serializer for Zipkin tracer.");
}
_spanSerializer = spanSerializer;
_flushTimer = new Timer(_ => FlushOldSpans(TimeUtils.UtcNow), null, TimeToLive, TimeToLive);
}
internal ZipkinTracerReporter(IZipkinSender sender, ISpanSerializer spanSerializer, IStatistics statistics)
{
if (sender == null)
{
throw new ArgumentNullException(nameof(sender),
"You have to specify a non-null sender.");
}
if (spanSerializer == null)
{
throw new ArgumentNullException(nameof(spanSerializer),
"You have to specify a non-null span serializer.");
}
if (statistics == null)
{
throw new ArgumentNullException(nameof(statistics),
"You have to specify a non-null statistics.");
}
_sender = sender;
_spanSerializer = spanSerializer;
_statistics = statistics;
}
public ZipkinTracer(IZipkinSender sender, ISpanSerializer spanSerializer, IStatistics statistics)
: this(new ZipkinTracerReporter(sender, spanSerializer, statistics), statistics)
{
}
public ZipkinTracer(IZipkinSender sender, ISpanSerializer spanSerializer)
: this(sender, spanSerializer, new Statistics())
{
}
public void ShouldThrowWithNullSender()
{
IZipkinSender sender = null;
Assert.Throws <ArgumentNullException>(() => { var tracer = new ZipkinTracer(sender, Mock.Of <ISpanSerializer>()); });
}
public ZipkinTracer(IZipkinSender sender, IStatistics statistics = null) : this(sender, new ThriftSpanSerializer(), statistics)
{
}
