/// <summary>
/// Returns a throttler for a specific service endpoint URL
/// </summary>
/// <param name="serviceEndpoint">URL of the mechanical turk service endpoint</param>
/// <param name="capacity">Number of requests the throttler permits all at once
/// (bucket capacity)</param>
/// <param name="rate">Number of requests the throttler allows per second
/// (average long term)</param>
/// <returns>A <see cref="IRequestThrottler"/> instance</returns>
public static LeakyBucketRequestThrottler GetInstance(string serviceEndpoint, int capacity, int rate)
{
if (serviceEndpoint == null)
{
throw new ArgumentNullException("serviceEndpoint", "Endpoint URL may not be null");
}
if (capacity <= 0)
{
throw new ArgumentException("Capacity must be bigger than zero", "capacity");
}
if (rate > capacity)
{
throw new ArgumentException("Rate must be bigger than capacity", "rate");
}
LeakyBucketRequestThrottler ret = null;
string key = string.Format("{0}{1}{2}", serviceEndpoint, capacity, rate);
if (instances.ContainsKey(key))
{
ret = instances[key];
}
else
{
lock (instances)
{
if (instances.ContainsKey(key))
{
ret = instances[key];
}
else
{
MTurkLog.Debug("Throttling requests to {0} (Capacity: {1}. Rate: {2}/sec)", serviceEndpoint, capacity, rate);
ret = new LeakyBucketRequestThrottler(serviceEndpoint, capacity, rate);
instances[key] = ret;
}
}
}
return(ret);
}
private void Dispose(bool disposing)
{
if (disposing)
{
lock (instances)
{
string key = string.Format("{0}{1}{2}", endpoint, capacity, ratePerSecond);
LeakyBucketRequestThrottler throttler = instances[key];
MTurkLog.Debug("Disposing {0}", throttler);
if (timerRefill != null)
{
timerRefill.Dispose();
}
instances.Remove(key);
}
}
}
/// <summary>
/// Returns a throttler for a specific service endpoint URL
/// </summary>
/// <param name="serviceEndpoint">URL of the mechanical turk service endpoint</param>
/// <param name="capacity">Number of requests the throttler permits all at once
/// (bucket capacity)</param>
/// <param name="rate">Number of requests the throttler allows per second
/// (average long term)</param>
/// <returns>A <see cref="IRequestThrottler"/> instance</returns>
public static LeakyBucketRequestThrottler GetInstance(string serviceEndpoint, int capacity, int rate)
{
if (serviceEndpoint == null)
{
throw new ArgumentNullException("serviceEndpoint", "Endpoint URL may not be null");
}
if (capacity <= 0)
{
throw new ArgumentException("Capacity must be bigger than zero", "capacity");
}
if (rate > capacity)
{
throw new ArgumentException("Rate must be bigger than capacity", "rate");
}
LeakyBucketRequestThrottler ret = null;
string key = string.Format("{0}{1}{2}", serviceEndpoint, capacity, rate);
if (instances.ContainsKey(key))
{
ret = instances[key];
}
else
{
lock (instances)
{
if (instances.ContainsKey(key))
{
ret = instances[key];
}
else
{
MTurkLog.Debug("Throttling requests to {0} (Capacity: {1}. Rate: {2}/sec)", serviceEndpoint, capacity, rate);
ret = new LeakyBucketRequestThrottler(serviceEndpoint, capacity, rate);
instances[key] = ret;
}
}
}
return ret;
}
