private void ProcessJob(string type, IDictionary <string, string> parameters)
{
try
{
int duration = 22;
if (parameters.ContainsKey("duration"))
{
int.TryParse(parameters["duration"], out duration);
}
duration += new Random().Next(duration / 8);
if (type.Equals("ondemandreport", StringComparison.InvariantCultureIgnoreCase))
{
duration += int.Parse(parameters["offset"]);
}
var logic = new JobManagement.JobsCore(ConfigurationManager.AppSettings["database"]);
logic.ScheduleReport(type, duration);
}
catch (Exception ex)
{
LogException(ex, "Report type = " + type);
}
}
private static void LogException(Exception ex, string message)
{
// Typically here would be a real exception handling code, nputting a simle placeholder to log to DB
var logic = new JobManagement.JobsCore(ConfigurationManager.AppSettings["database"]);
logic.LogError(ex.ToString(), message);
}
public string ScheduleJob(string type, IDictionary <string, string> values)
{
var jobs = new JobManagement.JobsCore(ConfigurationManager.AppSettings["database"]);
var t = Task.Run(() => jobs.SubmitJob(type, values));
return(t.Result);
}
private void Loop()
{
#if DEBUG
Thread.Sleep(TimeSpan.FromMinutes(1));
#endif
int count = 0;
while (running)
{
try
{
var logic = new JobManagement.JobsCore(ConfigurationManager.AppSettings["database"]);
var jobs = logic.GetJobs();
// Process up to 100 items in one cycle
jobs = jobs.GetRange(0, Math.Min(jobs.Count, 100));
foreach (var job in jobs)
{
string type;
IDictionary <string, string> parameters;
logic.GetJobDetails(job, out type, out parameters);
ProcessJob(type, parameters);
count++;
// Mark this job as complete asynchronously
logic.FinishJob(job);
if (!running)
{
break;
}
}
if (jobs.Count == 0)
{
Thread.Sleep(500);
}
// Delete old jobs periodically
if (count > 100)
{
count = 0;
// Delete olbs jobs asynchronously
logic.DeleteOldJobs();
}
}
catch (Exception ex)
{
System.Diagnostics.EventLog.WriteEntry("JobProcessor", ex.ToString());
}
}
}
public List <string> GetJobs()
{
var jobs = new JobManagement.JobsCore(ConfigurationManager.AppSettings["database"]);
// Run the logic in a separate thread asynchronously, kind of example of the bad code pattern
var t = Task.Run(() => jobs.GetJobs());
return(t.Result);
}