private void PrepareKeyContext(
QosPolicyKeyContext context,
HttpContext httpContext,
QosPolicy policy,
RouteTemplate routeTemplate,
RouteValueDictionary routeValues)
{
context.HttpContext = httpContext;
context.Policy = policy;
context.RouteTemplate = routeTemplate;
context.RouteValues = routeValues;
}
private async Task <(QosPolicy RejectedPolicy, int RejectedPolicyIndex)> EnterAsync(
HttpContext context,
ExecutionData[] execData)
{
var keyContext = new QosPolicyKeyContext(); // Perfs: allocate it only one time
var enterContext = new QosGateEnterContext(); // Perfs: allocate it only one time
for (var i = 0; i < _policies.Length; i++)
{
var policy = _policies[i];
var routeValues = new RouteValueDictionary();
RouteTemplate routeTemplate;
if (policy.TryUrlMatching(context.Request.Method, context.Request.Path, routeValues, out routeTemplate))
{
PrepareKeyContext(keyContext, context, policy.Policy, routeTemplate, routeValues);
var key = policy.Policy.Key.GetKey(keyContext);
if (!string.IsNullOrEmpty(key))
{
PrepareGateEnterContext(enterContext, context, key);
var enterResult = await policy.Policy.Gate.TryEnterAsync(enterContext);
if (!enterResult.Success)
{
return(policy.Policy, i);
}
execData[i] = new ExecutionData()
{
Key = key,
GateData = enterResult.Data
};
}
}
}
return(null, 0);
}
public string GetKey(QosPolicyKeyContext context)
{
return(_keyEvaluator(context));
}