/// <summary>
/// Load ClientThrollingPolicy from json data to cache memory.
/// </summary>
/// <param name="FolderName">Container folder of throttle data json file e.g. Resources</param>
/// <param name="FileName">File name of throttle data json file e.g. ThrottleData.json</param>
public static void CacheClientThrollingPolicy(string FolderName, string FileName)
{
try
{
var oList = new List <ClientRateLimiting>();
var jsonfile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, FolderName, FileName);
var jsontext = File.ReadAllText(jsonfile, Encoding.Default);
List <Client> clients = JsonConvert.DeserializeObject <List <Client> >(jsontext);
MemoryCacherHelper.Add("ClientThrollingPolicy", clients, DateTimeOffset.MaxValue);
}
catch (Exception ex)
{
Trace.TraceError(ex.Message);
}
}
public override void OnActionExecuting(HttpActionContext actionContext)
{
string endPointName = actionContext.Request.RequestUri.AbsolutePath;
#region STEP 1: Get user details like email, IP address, customerid, etc. & fill dictionary
requestIdentity = GetIdentity(actionContext);
Dictionary <string, string> dictIdentity = new Dictionary <string, string>();
dictIdentity.Add(KeyType.clientKey.ToString(), requestIdentity.clientKey);
dictIdentity.Add(KeyType.ip.ToString(), requestIdentity.ipAddress);
#endregion
#region STEP 2: Get ThrottleData.json file data which is saved in http memory cache.
List <Client> clients = (List <Client>)MemoryCacherHelper.GetValue(allClientThrollingPolicyCacheData);
Client client = clients.Where(x => x.clientKey == requestIdentity.clientKey).FirstOrDefault();
ThrottlePolicy throttlePolicy = client != null ? client.throttlePolicy : clients[0].throttlePolicy;
#endregion
#region STEP 3: Filtered whiteList users, throttling not applied to these users.
if (throttlePolicy.whiteListClients.Contains(requestIdentity.clientKey) ||
throttlePolicy.whiteListClients.Contains(requestIdentity.ipAddress))
{
return;
}
#endregion
#region Step 4: Apply policy -> unique -> method name + identity key like emil, ip etc.
ClientRateLimiting clientRateLimiting = throttlePolicy.clientRateLimiting.Where(p => p.key == _ThrottlePolicyKey).FirstOrDefault();
if (clientRateLimiting != null && !string.IsNullOrEmpty(dictIdentity[clientRateLimiting.keyType.ToString()]))
{
ApplyAndCheckPolicy(actionContext, clientRateLimiting.policy, dictIdentity[clientRateLimiting.keyType.ToString()] + endPointName);
Trace.TraceInformation("******************Identity=>" + clientRateLimiting.keyType.ToString() + " => " + dictIdentity[clientRateLimiting.keyType.ToString()] + "/Method Call=>" + actionContext.Request.RequestUri.AbsoluteUri);
}
#endregion
}