public void LogEvent(Event e)
{
// Unwrap aggregate exceptions
if (e.Exception != null && e.Exception is AggregateException)
{
Exception ex = e.Exception;
while (ex != null && ex is AggregateException)
{
ex = ex.InnerException;
}
e.Exception = ex;
e.ExceptionType = ex.GetType().ToString();
}
lock (this)
{
foreach (LogWriter writer in writers)
{
if ((writer.EventSourceMask & e.EventSource) > 0)
{
writer.WriteEvent(e);
}
}
}
}
public override void WriteEvent(Event e)
{
textWriter.WriteLine("{0} : {1} : {2}", e.EventDateTime, e.Operation, e.ExecutionStatus);
if (e.Exception != null)
{
textWriter.WriteLine(" {0}", e.Exception.Message);
}
}
/// <summary>
/// Process jobs that are found in an intermediate stage, possibly
/// due to an unexpected shutdown of the scheduler.
/// </summary>
private void ProcessInterruptedJobs()
{
using (Context context = ContextManager.Instance.CreateContext(ConnectionMode.AutoOpen, TransactionMode.AutoCommit))
{
int q;
Event e;
var jf = new JobInstanceFactory(context);
q = 1;
foreach (var qi in Cluster.Queues.Keys)
{
// Process previously interrupted jobs (that are marked as running)
// Process jobs that are marked as executing - these remained in this state
// because of a failure in the scheduler
foreach (var j in jf.FindJobInstances(Guid.Empty, qi, null,
JobExecutionState.Executing | JobExecutionState.Persisting | JobExecutionState.Cancelling))
{
// Locking must be handled
context.ContextGuid = j.WorkflowInstanceId;
j.ReleaseLock(true);
j.JobExecutionStatus = JobExecutionState.Failed;
j.ExceptionMessage = Jhu.Graywulf.Registry.ExceptionMessages.SchedulerUnexpectedShutdown;
j.Save();
j.RescheduleIfRecurring();
q++;
}
}
if (q > 0)
{
e = new Event("Jhu.Graywulf.Scheduler.QueueManager.ProcessInterruptedJobs[Executing]", Guid.Empty);
e.Message = String.Format("Marked {0} jobs as failed.", q);
LogEvent(e);
}
q = 0;
foreach (var qi in Cluster.Queues.Keys)
{
// Jobs marked as waiting probably can be restarted without a side effect
foreach (var j in jf.FindJobInstances(Guid.Empty, qi, null, JobExecutionState.Starting))
{
// Locking must be handled
context.ContextGuid = j.WorkflowInstanceId;
j.ReleaseLock(true);
j.JobExecutionStatus = JobExecutionState.Scheduled;
j.Save();
q++;
}
}
if (q > 0)
{
e = new Event("Jhu.Graywulf.Scheduler.QueueManager.ProcessInterruptedJobs[Starting]", Guid.Empty);
e.Message = String.Format("Marked {0} jobs as scheduled.", q);
LogEvent(e);
}
}
}
/// <summary>
/// Starts the scheduler
/// </summary>
/// <param name="interactive"></param>
public void Start(string clusterName, bool interactive)
{
// Initialize Queue Manager
this.interactive = interactive;
this.appDomains = new Dictionary<int, AppDomainHost>();
this.runningJobs = new Dictionary<Guid, Job>();
this.eventOrder = 0;
this.contextGuid = Guid.NewGuid();
// Initialize logger
if (interactive)
{
Jhu.Graywulf.Logging.Logger.Instance.Writers.Add(new Jhu.Graywulf.Logging.StreamLogWriter(Console.Out));
}
Event e = new Event("Jhu.Graywulf.Scheduler.Start", Guid.Empty);
e.UserData.Add("MachineName", Environment.MachineName);
e.UserData.Add("UserAccount", String.Format("{0}\\{1}", Environment.UserDomainName, Environment.UserName));
LogEvent(e);
// *** TODO: error handling, and repeat a couple of times, then shut down with exception
InitializeCluster(clusterName);
InitializeScheduler();
ProcessInterruptedJobs();
StartPoller();
}
/// <summary>
/// Logs scheduler events
/// </summary>
/// <param name="e"></param>
public void LogEvent(Event e)
{
e.UserGuid = Guid.Empty;
e.EventSource = EventSource.Scheduler;
e.ExecutionStatus = ExecutionStatus.Closed;
e.JobGuid = Guid.Empty;
e.ContextGuid = contextGuid;
e.EventOrder = ++eventOrder;
Logger.Instance.LogEvent(e);
}
/// <summary>
/// Writes an event into the log database.
/// </summary>
/// <param name="e"></param>
public void LogEvent(Event e)
{
e.UserGuid = this.userGuid;
e.JobGuid = this.jobGuid;
e.ContextGuid = this.contextGuid;
e.EventSource = EventSource.Registry;
e.ExecutionStatus = ExecutionStatus.Closed;
// Logging is different inside activities
if (activityContext == null)
{
// Direct logging invoked from code running outside a workflow.
// Event will be written directly into the database.
e.EventOrder = ++eventOrder;
Logger.Instance.LogEvent(e);
}
else
{
// Logging event sent by code running inside a workflow.
// In this case event will be routed to the workflow
// tracking service.
System.Activities.Tracking.CustomTrackingRecord r =
new System.Activities.Tracking.CustomTrackingRecord("Jhu.Graywulf.Logging");
r.Data.Add("Jhu.Graywulf.Logging.Event", e);
activityContext.Track(r);
}
}
public Event(Event old)
{
CopyMembers(old);
}
private void CopyMembers(Event old)
{
this.eventId = old.eventId;
this.userGuid = old.userGuid;
this.jobGuid = old.jobGuid;
this.contextGuid = old.contextGuid;
this.eventSource = old.eventSource;
this.eventSeverity = old.eventSeverity;
this.eventDateTime = old.eventDateTime;
this.eventOrder = old.eventOrder;
this.executionStatus = old.executionStatus;
this.operation = old.operation;
this.entityGuid = old.entityGuid;
this.entityGuidFrom = old.entityGuidFrom;
this.entityGuidTo = old.entityGuidTo;
this.exceptionType = old.exceptionType;
this.site = old.site;
this.message = old.message;
this.stackTrace = old.stackTrace;
this.userData = new Dictionary<string, object>(old.userData);
this.exception = old.exception;
}
public virtual void WriteEvent(Event e)
{
}