protected override async void OnStart(string[] args)
{
AppLogging.Instance.Info("Starting Messaging Broker Service");
try
{
this.ServiceConfiguration = await Service_Start.ServiceConfiguration.GetServiceConfiguration();
}
catch (Exception ex)
{
AppLogging.Instance.Error(ex);
}
AppLogging.Instance.Info("Connecting to Database, " + ServiceConfiguration.DatabaseConnectionString);
try
{
this.DataBaseContext = new NebulusContext(this.ServiceConfiguration.DatabaseConnectionString);
}
catch (Exception ex)
{
AppLogging.Instance.Error("Error Connecting to database", ex);
}
AppLogging.Instance.Info("Connecting to Messaging WebService, " + ServiceConfiguration.NebulusMessageWebServiceUri);
try
{
this.MessageWebServiceClient = await Service_Code.MessageServiceClient.CreateMessageServiceClient(NebulusMessageBroker.Properties.Settings.Default.ServiceConfigConnectionString + "/api/service/PostMessage");
}
catch (Exception ex)
{
AppLogging.Instance.Error(ex);
}
System.Timers.Timer timer = new System.Timers.Timer();
timer.Interval = 30000;
timer.Elapsed += new System.Timers.ElapsedEventHandler(this.OnTimer);
timer.Start();
}
private async void OnTimer(object sender, System.Timers.ElapsedEventArgs e)
{
if (ServiceConfiguration != null)
{
if (this.DataBaseContext != null)
{
try
{
AppLogging.Instance.Debug("Reconnecting to Database");
this.DataBaseContext = new NebulusContext(ServiceConfiguration.DatabaseConnectionString);
int windowOffSet = 5;
var timeWindowEnd = DateTimeOffset.Now.AddMinutes(windowOffSet);
var messages = this.DataBaseContext.MessageItems.Where(message => message.Status != 3 && (message.ScheduleStart >= DateTimeOffset.Now && message.ScheduleStart <= timeWindowEnd && message.Expiration >= timeWindowEnd || ((message.ScheduleInterval != ScheduleIntervalType.Never && message.ScheduleStart.Hour == DateTimeOffset.Now.Hour && message.Expiration >= timeWindowEnd))));
foreach (var mItem in messages)
{
if (!messageList.Any(message => message.MessageItemId == mItem.MessageItemId))
{
messageList.Add(mItem);
var mTask = Task.Run(async() =>
{
AppLogging.Instance.Debug("Queueing Message, " + mItem.MessageItemId);
await Task.Delay(new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, mItem.ScheduleStart.Hour, mItem.ScheduleStart.Minute, 0) - DateTimeOffset.Now);
MessageWebServiceClient.SendMessage(mItem);
});
}
}
messageList.RemoveAll(message => message.ScheduleStart < DateTimeOffset.Now.Subtract(TimeSpan.FromMinutes(windowOffSet)));
}
catch (Exception ex)
{
AppLogging.Instance.Error("Service Error: ", ex);
}
}
else
{
AppLogging.Instance.Info("Reconnecting to Database, " + ServiceConfiguration.DatabaseConnectionString);
try
{
this.DataBaseContext = new NebulusContext(ServiceConfiguration.DatabaseConnectionString);
}
catch (Exception ex)
{
AppLogging.Instance.Error("Error Connecting to database", ex);
}
}
}
else
{
AppLogging.Instance.Info("Retrying Messaging Service Configuration Connection");
try
{
this.ServiceConfiguration = await Service_Start.ServiceConfiguration.GetServiceConfiguration();
}
catch (Exception ex)
{
AppLogging.Instance.Error(ex);
}
}
}