/// <summary>
///
/// </summary>
/// <param name="period">周期</param>
/// <param name="maxCountPerPeriod">周期内最大允许执行次数</param>
/// <param name="block"></param>
/// <param name="counter"></param>
/// <param name="lockTimeout">避免因为客户端失去连接而引起的死锁</param>
/// <param name="concurrentCount">并发数</param>
/// <param name="throttleName">应该是一个唯一的字符串, 这个参数做为 Redis 的 key 的一部份, 因此要符合 redis key 的规则</param>
public Throttle(string throttleName,
TimeSpan period,
int maxCountPerPeriod,
BaseBlock block,
BaseCounter counter,
TimeSpan?lockTimeout = null,
int?concurrentCount = null
)
{
if (string.IsNullOrWhiteSpace(throttleName))
{
throw new ArgumentException($"{nameof(throttleName)} 必填");
}
if (period <= TimeSpan.Zero)
{
throw new ArgumentException($"{nameof(period)} 无效");
}
if (maxCountPerPeriod <= 0)
{
throw new ArgumentException($"{nameof(maxCountPerPeriod)} 无效");
}
if (concurrentCount.HasValue && concurrentCount <= 0)
{
throw new ArgumentException($"{nameof(concurrentCount)} 无效");
}
if (concurrentCount.HasValue)
{
this.semaphoreSlim = new SemaphoreSlim(concurrentCount.Value, concurrentCount.Value);
}
this.ThrottleName = throttleName;
this.ThrottleID = Guid.NewGuid().ToString();
this.MaxCountPerPeriod = maxCountPerPeriod;
this.Period = period;
this.block = block ?? throw new ArgumentNullException(nameof(block));
this.block.Setup(throttleName, this.ThrottleID, maxCountPerPeriod, period, lockTimeout);
this.counter = counter ?? throw new ArgumentNullException(nameof(counter));
this.counter.SetUp(throttleName, this.ThrottleID, maxCountPerPeriod, period, lockTimeout);
this.counter.OnReset += Counter_OnReset;
}
/// <summary>
///
/// </summary>
/// <param name="throttleName">应该是一个唯一的字符串, 这个参数做为 Redis 的 key 的一部份, 因此要符合 redis key 的规则</param>
/// <param name="period"></param>
/// <param name="maxCountPerPeriod"></param>
/// <param name="counter"></param>
/// <param name="blockTimeout"></param>
/// <param name="concurrentCount"></param>
public Throttle(string throttleName,
TimeSpan period,
int maxCountPerPeriod,
BaseCounter counter,
TimeSpan?blockTimeout = null,
int?concurrentCount = null
)
: this(throttleName,
period,
maxCountPerPeriod,
new DefaultBlock(),
counter,
blockTimeout,
concurrentCount
)
{
}
