public RetrievedItemsCleanerManager
(
WorkItemSlotCollection retrievedItems,
bool retrievalQueueRecoverable,
ContextIdentifier contextIdentifier,
int retrievedItemsCleanerInterval,
string name,
string description,
int cleanersCount,
int cleanerRegularStopTimeout
)
: base
(
name,
description
)
{
_retrievedItems = retrievedItems;
_retrievalQueueRecoverable = retrievalQueueRecoverable;
_contextIdentifier = contextIdentifier;
_retrievedItemsCleanerInterval = retrievedItemsCleanerInterval;
this.cleanersCount = cleanersCount;
this.cleanerRegularStopTimeout = cleanerRegularStopTimeout;
}
public override WorkItem GetNextWorkItem
(
WorkItemSlotCollection slots
)
{
workItemCandidate = null;
#region Process
if (ReservePrioritySlot(PriorityScope))
{
if (ExecutionState != ProcessExecutionState.Running)
{
return null;
}
try
{
WorkItem workItem = GetWorkItemFromQueue
();
if (workItem != null)
{
Log.Source.TraceData(TraceEventType.Verbose,
ProducerMessage.MessageRetrieved,
new ContextualLogEntry
{
Message =
"Got a new work item" + workItem,
ContextIdentifier = new ContextIdentifier()
});
return workItem;
}
}
catch (Exception ex)
{
// Interrupt should not be a problem
CancelPrioritySlotReservation(PriorityScope);
Log.Source.TraceData(TraceEventType.Error,
ProducerMessage.RetrieveMessageFailed,
new ContextualLogEntry
{
Message =
"Error during getting work item." + ex,
ContextIdentifier = new ContextIdentifier()
});
return null;
}
CancelPrioritySlotReservation(PriorityScope);
}
#endregion Process
return null;
}
public ProcessingStateData
(
WorkItemSlotsConfiguration
configuration
)
{
_retrievedItems = WorkItemSlotCollection.Create(configuration);
_submittedItems = new WorkItemCollection();
}
public RetrievedItemsCleaner
(WorkItemSlotCollection retrievedItems, ContextIdentifier contextIdentifier, int retrievedItemsCleanerInterval, int cleanerRegularStopTimeout, string name, string description)
: base
(
name,
description
)
{
_retrievedItems = retrievedItems;
_contextIdentifier = contextIdentifier;
_retrievedItemsCleanerInterval = retrievedItemsCleanerInterval;
this.cleanerRegularStopTimeout = cleanerRegularStopTimeout;
}
/// <summary>
/// <para>
/// Initializes a new instance of <see cref='WorkItemSlotCollection'/>.
/// </para>
/// </summary>
// public WorkItemSlotCollection()
// {
// indexes = new PrioritySlotsIndexCollection();
// }
/// <summary>
/// <para>
/// Initializes a new instance of <see cref='WorkItemSlotCollection'/>.
/// </para>
/// </summary>
public WorkItemSlotCollection(WorkItemSlotCollection value)
{
AddRange(value);
}
/// <summary>
/// <para>
/// Adds the contents of another <see cref='WorkItemSlotCollection'/> to the end of the collection.
/// </para>
/// </summary>
/// <param name='value'>
/// A <see cref='WorkItemSlotCollection'/> containing the objects to add to the collection.
/// </param>
/// <returns>
/// <para>None.</para>
/// </returns>
/// <seealso cref='WorkItemSlotCollection.Add'/>
public void AddRange(WorkItemSlotCollection value)
{
for (int i = 0; (i < value.Count); i = (i + 1))
{
Add(value[i]);
}
}
public override WorkItem GetNextWorkItem(WorkItemSlotCollection slots)
{
//TODO: This will be working on one thread only so skipping the synchronization here
Trace.CorrelationManager.ActivityId = Guid.NewGuid();
try
{
queue.Open();
}
catch (Exception ex)
{
if (!queue.RecoverFromConnectionError(ex))
{
Stop();
}
return null;
}
workItemCandidate = null;
#region Process
if (ReservePrioritySlot(PriorityScope))
{
if (ExecutionState != ProcessExecutionState.Running)
{
return null;
}
try
{
WorkItem workItem = GetWorkItemFromQueue(PriorityScope);
if (workItem != null)
{
//Log.TraceData(Log.Source, System.Diagnostics.TraceEventType.Verbose,
// ProducerMessage.MessageRetrieved,
// new ContextualLogEntry
// {
// Message = "Got a new work item" + workItem,
// ContextIdentifier = new ContextIdentifier()
// });
return workItem;
}
}
catch (Exception ex)
{
// Interrupt should not be a problem
CancelPrioritySlotReservation(PriorityScope);
Log.TraceData(Log.Source, System.Diagnostics.TraceEventType.Error,
ProducerMessage.RetrieveMessageFailed,
new ContextualLogEntry
{
Message = "Error during getting work item." + ex,
ContextIdentifier = new ContextIdentifier()
});
return null;
}
CancelPrioritySlotReservation(PriorityScope);
}
#endregion Process
return null;
}
public abstract WorkItem GetNextWorkItem(WorkItemSlotCollection slots);
public override WorkItem GetNextWorkItem(WorkItemSlotCollection slots)
{
return null;
}