当分の間、私はこのforkのWebApiThrottleを使用していますし、この溶液に、手動でDLLを追加します。 @adamriyadiはこの機能を実装しました。それがNuGetパッケージに来るのを待っています。
更新:その後、私はHttpRuntime.Cache
を使用して期間を遮断すると制限API率のために私自身の実装と一緒に行きました。したがって、追加のライブラリを追加する必要はありません。
public class ThrottleAttribute : ActionFilterAttribute
{
private int _API_RATEQUOTA = 60;
// per x minute value
private int _API_TIMELIMIT = 1;
private int _API_BLOCKDURATION = 5;
private readonly object syncLock = new object();
public override void OnActionExecuting(HttpActionContext actionContext)
{
// Extract access_token or id or ip address to uniquely identify an API call
var access_token = AuthHelper.GetAuthToken(actionContext.Request);
if (access_token != null)
{
string throttleBaseKey = GetThrottleBaseKey(access_token);
string throttleCounterKey = GetThrottleCounterKey(access_token);
lock (syncLock)
{
//add a listner for new api request count
if (HttpRuntime.Cache[throttleBaseKey] == null)
{
// add api unique key.. this cache will get expire after _API_TIMELIMIT
HttpRuntime.Cache.Add(throttleBaseKey,
DateTime.UtcNow,
null,
DateTime.Now.AddMinutes(_API_TIMELIMIT),
Cache.NoSlidingExpiration,
CacheItemPriority.High,
null);
// add count as value for that api.. this cache will get expire after _API_TIMELIMIT
HttpRuntime.Cache.Add(throttleCounterKey,
1,
null,
DateTime.Now.AddMinutes(_API_TIMELIMIT),
Cache.NoSlidingExpiration,
CacheItemPriority.High,
null);
}
else
{
//listener exists for api request count
var current_requests = (int)HttpRuntime.Cache[throttleCounterKey];
if (current_requests < _API_RATEQUOTA)
{
// increase api count
HttpRuntime.Cache.Insert(throttleCounterKey,
current_requests + 1,
null,
DateTime.Now.AddMinutes(_API_TIMELIMIT),
Cache.NoSlidingExpiration,
CacheItemPriority.High,
null);
}
//hit rate limit, wait for another 5 minutes (_API_BLOCKDURATION)
else
{
HttpRuntime.Cache.Insert(throttleBaseKey,
DateTime.UtcNow,
null,
DateTime.Now.AddMinutes(_API_BLOCKDURATION),
Cache.NoSlidingExpiration,
CacheItemPriority.High,
null);
HttpRuntime.Cache.Insert(throttleCounterKey,
current_requests + 1,
null,
DateTime.Now.AddMinutes(_API_BLOCKDURATION),
Cache.NoSlidingExpiration,
CacheItemPriority.High,
null);
Forbidden(actionContext);
}
}
}
}
else
{
BadRequest(actionContext);
}
base.OnActionExecuting(actionContext);
}
private string GetThrottleBaseKey(string app_id)
{
return Identifier.THROTTLE_BASE_IDENTIFIER + app_id;
}
private string GetThrottleCounterKey(string app_id)
{
return Identifier.THROTTLE_COUNTER_IDENTIFIER + app_id;
}
private void BadRequest(HttpActionContext actionContext)
{
actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.BadRequest);
}
private void Forbidden(HttpActionContext actionContext)
{
actionContext.Response = actionContext.Request.CreateResponse(HttpStatusCode.Forbidden, "Application Rate Limit Exceeded");
}
}
public static class Identifier
{
public static readonly string THROTTLE_BASE_IDENTIFIER = "LA_THROTTLE_BASE_";
public static readonly string THROTTLE_COUNTER_IDENTIFIER = "LA_THROTTLE_COUNT_";
}
今[ThrottleAttribute]
に必要なAPIを飾ります