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POHow to call a method in every 5 seconds?
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copied!<p>I have two wcf services Client.svc and Admin.svc. A method in client calls admin service method in every 5 seconds. And Admin's method which is been called by client verifies that if this method is not called within 5 seconds then update database with status "NotResponding" else update it with "IsAlive" value. </p> <p>All this should be done on a separate thread.</p> <p>I have written some code wherein Client uses Timer to call that method in every 5 seconds.</p> <pre><code> public static void RegisterHeartBeat(PingRequest pingRequest) { try { string heartBeatInterval = Phoenix.API.Utility.ConfigReader.GetAppSettingsValue("HeartBeatInterval"); int timeInSeconds = -1; Int32.TryParse(heartBeatInterval, out timeInSeconds); if (timeInSeconds != -1) { TimerCallback timerCallHeartBeat = new TimerCallback(CallRegisterHeartBeat); Timer timer = new Timer(timerCallHeartBeat, pingRequest, 0, (timeInSeconds * 1000)); //Multiplying by 1000, converts seconds to milliseconds } else { Exception ex = new Exception("HeartBeatInterval is not configured in web.config file"); Phoenix.Client.API.BLL.Common.CommonUtility.CreateResultAndLogClientException(null, null, ex); } } catch (Exception ex) { Phoenix.Client.API.BLL.Common.CommonUtility.CreateResultAndLogClientException(null, null, ex); } } private static void CallRegisterHeartBeat(object state) { PhoenixClientBLL.Admin.InternalClient internalClient = new PhoenixClientBLL.Admin.InternalClient("BasicHttpBinding_IInternal"); if (state != null) { //AdminAPI accepts Admin.PingRequest parameter which has a different format than ClientAPI PingRequest. //Thus, a new object of admin ping request type is created. Phoenix.API.ClientServiceContracts.DataContracts.PingRequest pingRequestDC = state as Phoenix.API.ClientServiceContracts.DataContracts.PingRequest; //AdminAPI PhoenixClientBLL.Admin.PingRequest pingRequest = new PhoenixClientBLL.Admin.PingRequest(); //Test Agent ID pingRequest.TestAgentId = Guid.Parse(pingRequestDC.TestAgentId); //Test Agent Status is not set because it will be decided in ADMIN API as per the interval difference. internalClient.RegisterHeartBeat(pingRequest); } } </code></pre> <p>In Admin, I check the last update date and the current date with the difference of time to update database accordingly. </p> <pre><code> public static void RegisterHeartBeat(PingRequest pingRequest) { int status = 0; DateTime startTime, endTime; int testAgentId = -1; string heartBeatIntervalValue = Phoenix.API.Utility.ConfigReader.GetAppSettingsValue("HeartBeatInterval"); int heartBeatInterval = -1; if(String.IsNullOrEmpty(heartBeatIntervalValue)) { Common.CommonUtility.CreateResultAndLogException(null, null, new Exception("HeartBeatInterval is not configured in the configuration file")); } else { try { string key = pingRequest.TestAgentId.ToString(); if (!String.IsNullOrEmpty(key)) { if (!heartBeatTimeStamp.ContainsKey(key)) { heartBeatTimeStamp.Add(key, System.DateTime.Now); } else { endTime = DateTime.Now; if (heartBeatTimeStamp[key].HasValue) { startTime = heartBeatTimeStamp[key].Value; var timeDiff = new TimeSpan(endTime.Ticks - startTime.Ticks); //Check the configured heart beat interval value Int32.TryParse(heartBeatIntervalValue, out heartBeatInterval); if (heartBeatInterval != -1) { if (timeDiff.Seconds > heartBeatInterval) { // add update NotResponding = 3 .. Int32.TryParse(pingRequest.TestAgentId.ToString(), out testAgentId); //If Test Agent ID is converted into integer than update table else log the error. if (testAgentId != -1) { status = DAO.TestAgentDAO.RegisterHeartBeat(testAgentId, (int)TestAgentStatus.NotResponding); } else { Common.CommonUtility.CreateResultAndLogException(null, null, new Exception("Cannot convert Test Agent ID Data type from GUID to Integer")); } //Sql Error if (0 != status) { Common.CommonUtility.CreateResultAndLogSqlError(null, status, null); } } else { // add update IsAlive= 4 Int32.TryParse(pingRequest.TestAgentId.ToString(), out testAgentId); //If Test Agent ID is converted into integer than update table else log the error. if (testAgentId != -1) { status = DAO.TestAgentDAO.RegisterHeartBeat(testAgentId, (int)TestAgentStatus.IsAlive); } else { Common.CommonUtility.CreateResultAndLogException(null, null, new Exception("Cannot convert Test Agent ID Data type from GUID to Integer")); } //Sql Error if (0 != status) { Common.CommonUtility.CreateResultAndLogSqlError(null, status, null); } } } else { Common.CommonUtility.CreateResultAndLogException(null, null, new Exception("Invalid HeartBeatInterval Value")); } } } } else { Common.CommonUtility.CreateResultAndLogException(null, null, new Exception("Test Agent ID is incorrect or does not exists")); } } catch (Exception ex) { Common.CommonUtility.CreateResultAndLogException(null, null, ex); } } } </code></pre> <p>But my timer behaves in a wierd manner and never calls the admin method.. Can you please check it why? or any other logic needs to be implemented here.</p> <p>Thanks Priyanka</p>

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