forked from cyberprophet/open-api-modules
/
RequestLimit.cs
137 lines (119 loc) · 4.41 KB
/
RequestLimit.cs
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namespace ShareInvest;
public static class RequestLimit
{
/// <summary>It tells waiting milliseconds.</summary>
/// <returns>If get zero, can request it immediately.</returns>
public static int CheckAndResetLimits(DateTime? now = null)
{
var requestTime = now ?? DateTime.Now;
var perSecond = CheckAndResetLimitsPerSecond(requestTime);
var perMinute = CheckAndResetLimitsPerMinute(requestTime);
var perHour = CheckAndResetLimitsPerHour(requestTime);
if (perSecond > 0)
{
return (int)perSecond + 0x10;
}
if (perMinute > 0)
{
return (int)perMinute + 0x100;
}
if (perHour > 0)
{
return (int)perHour + 0x1000;
}
return 0;
}
/// <summary>The maximum number of requests per second is 5.</summary>
public static (int requestCount, TimeSpan delayTime) GetDelaySeconds()
{
if (maxRequestsPerSecond.Count < 5)
{
return (maxRequestsPerSecond.Count, TimeSpan.Zero);
}
_ = maxRequestsPerSecond.TryPeek(out DateTime firstRequestTime);
return (maxRequestsPerSecond.Count, DateTime.Now.Subtract(firstRequestTime));
}
/// <summary>The maximum number of requests per minute is 100.</summary>
public static (int requestCount, TimeSpan delayTime) GetDelayMinute()
{
if (maxRequestsPerMinute.Count < 100)
{
return (maxRequestsPerMinute.Count, TimeSpan.Zero);
}
_ = maxRequestsPerMinute.TryPeek(out DateTime firstRequestTime);
return (maxRequestsPerMinute.Count, DateTime.Now.Subtract(firstRequestTime));
}
/// <summary>The maximum number of requests per hour is 1000.</summary>
public static (int requestCount, TimeSpan delayTime) GetDelayHour()
{
if (maxRequestsPerHour.Count < 1000)
{
return (maxRequestsPerHour.Count, TimeSpan.Zero);
}
_ = maxRequestsPerHour.TryPeek(out DateTime firstRequestTime);
return (maxRequestsPerHour.Count, DateTime.Now.Subtract(firstRequestTime));
}
static double CheckAndResetLimitsPerSecond(DateTime requestTime)
{
while (maxRequestsPerSecond.TryPeek(out DateTime firstRequestTime))
{
var timeSpan = requestTime.Subtract(firstRequestTime);
if (timeSpan.TotalSeconds > 1)
{
maxRequestsPerSecond.Dequeue();
continue;
}
if (maxRequestsPerSecond.Count < 5)
{
break;
}
maxRequestsPerSecond.Enqueue(requestTime.AddMilliseconds(timeSpan.TotalMilliseconds));
return timeSpan.TotalMilliseconds;
}
maxRequestsPerSecond.Enqueue(requestTime);
return double.NegativeZero;
}
static double CheckAndResetLimitsPerMinute(DateTime requestTime)
{
while (maxRequestsPerMinute.TryPeek(out DateTime firstRequestTime))
{
var timeSpan = requestTime.Subtract(firstRequestTime);
if (timeSpan.TotalMinutes > 1)
{
maxRequestsPerMinute.Dequeue();
continue;
}
if (maxRequestsPerMinute.Count < 100)
{
break;
}
maxRequestsPerMinute.Enqueue(requestTime.AddMilliseconds(timeSpan.TotalMilliseconds));
return timeSpan.TotalMilliseconds;
}
maxRequestsPerMinute.Enqueue(requestTime);
return double.NegativeZero;
}
static double CheckAndResetLimitsPerHour(DateTime requestTime)
{
while (maxRequestsPerHour.TryPeek(out DateTime firstRequestTime))
{
var timeSpan = requestTime.Subtract(firstRequestTime);
if (timeSpan.TotalHours > 1)
{
maxRequestsPerHour.Dequeue();
continue;
}
if (maxRequestsPerHour.Count < 1000)
{
break;
}
maxRequestsPerHour.Enqueue(requestTime.AddMilliseconds(timeSpan.TotalMilliseconds));
return timeSpan.TotalMilliseconds;
}
maxRequestsPerHour.Enqueue(requestTime);
return double.NegativeZero;
}
static readonly Queue<DateTime> maxRequestsPerSecond = new();
static readonly Queue<DateTime> maxRequestsPerMinute = new(0x20);
static readonly Queue<DateTime> maxRequestsPerHour = new(0x100);
}