public void Execute(IJobExecutionContext quartzContext)
{
var data = quartzContext.JobDetail.JobDataMap;
var realization = data["realization"];
var jobActivity = ((Func <IJobActivity>)realization)();
var traceContext = (TraceContext)data["context"];
var parameters = (IDictionary <string, string>)data["parameters"];
var getAudit = (Func <DateTime, Action <string> >)data["getAudit"];
JobActivityTool.ControlledExecution(jobActivity, traceContext, getAudit(DateTime.Now), parameters);
}
/// <summary>
/// Listens the process.
/// </summary>
/// <param name="cloudStorageAccount">The cloud storage account.</param>
/// <param name="jobConstructor">The job constructor.</param>
/// <param name="instance">The instance.</param>
/// <param name="getSystemJob">The get system job.</param>
/// <param name="getIsCancellationRequested">The get is cancellation requested.</param>
private void ListenerProcess(CloudStorageAccount cloudStorageAccount, Func <Type, IJobActivity> jobConstructor,
string instance, Func <SystemJob> getSystemJob, Func <bool> getIsCancellationRequested)
{
try
{
var job = getSystemJob();
var systemJobId = job.SystemJobId;
var multiInstance = job.AllowMultipleInstances;
var type = Type.GetType(job.JobClassType);
Debug.Assert(type != null, "Can't find job with class name " + job.JobClassType);
var jobParameters = job.JobParameters.ToDictionary(k => k.Name.ToLowerInvariant(), v => v.Value);
string prevTaskScheduleId = null;
while (true) // actually we could finish it in case of configuration changed and task become disabled
{
if (_isStoped)
{
break;
}
try
{
var isDisabled = getIsCancellationRequested(); //_schedulerDbContext.IsDisabled(systemJobId, multiInstance);
if (isDisabled)
{
break;
}
var queueReference =
cloudStorageAccount.CreateCloudQueueClient().GetQueueReference(_settings.GetQueueName(systemJobId));
queueReference.CreateIfNotExists();
var message = multiInstance
? queueReference.PeekMessage()
: queueReference.GetMessage(TimeSpan.FromMinutes(30) /* Invisibility Timeout*/);
string taskScheduleId = null;
if (message != null)
{
taskScheduleId = message.AsString;
Guid tmp;
var test = Guid.TryParse(taskScheduleId, out tmp);
Debug.Assert(test);
if (!multiInstance)
{
try
{
queueReference.DeleteMessage(message); // remove to ensure that other machines cannot execute task
}
catch (Exception ex)
{
_traceSource.TraceEvent(TraceEventType.Error, 0, ex.ToString());
}
}
}
if (taskScheduleId != null && prevTaskScheduleId != taskScheduleId)
{
// EXECUTE THE JOB
var startDateTime = DateTime.Now;
Action <string> audit = errorMessage =>
_schedulerDbContext.CreateSystemJobLogEntry(systemJobId, startDateTime, DateTime.Now,
errorMessage, instance, taskScheduleId, multiInstance);
JobActivityTool.ControlledExecution(() => jobConstructor(type), _traceSource, audit, jobParameters);
prevTaskScheduleId = taskScheduleId;
}
}
catch (Exception ex)
{
_traceSource.TraceEvent(TraceEventType.Error, 0, ex.ToString());
throw;
}
Thread.Sleep(Settings.QueueListenerWakeupFrequency);
}
}
catch (Exception ex)
{
_traceSource.TraceEvent(TraceEventType.Error, 0, Helper.FormatException(ex, "JobScheduler", "ListenerProcess"));
}
}
