/// <summary>
/// Method called when a <see cref="WorkQueue"/> item completes.
/// </summary>
/// <param name="queueItem">The queue item completing.</param>
private void QueueItemComplete(Model.WorkQueue queueItem)
{
lock (_syncLock)
{
if (queueItem.WorkQueuePriorityEnum.Equals(WorkQueuePriorityEnum.High))
{
_highPriorityCount--;
}
if (queueItem.WorkQueuePriorityEnum.Equals(WorkQueuePriorityEnum.Stat))
{
_highPriorityCount--;
}
WorkQueueTypeProperties prop = _workQueuePropList[queueItem.WorkQueueTypeEnum];
if (prop.MemoryLimited)
{
_memoryLimitedCount--;
}
_totalThreadCount--;
foreach (WorkQueueThreadParameter queuedItem in _queuedItems)
{
if (queuedItem.Item.Key.Equals(queueItem.Key))
{
_queuedItems.Remove(queuedItem);
break;
}
}
}
}
/// <summary>
/// Enqueue a WorkQueue entry for processing.
/// </summary>
/// <param name="processor"></param>
/// <param name="item"></param>
/// <param name="del"></param>
public void Enqueue(IWorkQueueItemProcessor processor, Model.WorkQueue item, WorkQueueThreadDelegate del)
{
WorkQueueThreadParameter parameter = new WorkQueueThreadParameter(processor, item, del);
lock (_syncLock)
{
if (item.WorkQueuePriorityEnum.Equals(WorkQueuePriorityEnum.High))
{
_highPriorityCount++;
}
if (item.WorkQueuePriorityEnum.Equals(WorkQueuePriorityEnum.Stat))
{
_highPriorityCount++;
}
WorkQueueTypeProperties prop = _workQueuePropList[item.WorkQueueTypeEnum];
if (prop.MemoryLimited)
{
_memoryLimitedCount++;
}
_totalThreadCount++;
_queuedItems.Add(parameter);
}
Enqueue(parameter, delegate(WorkQueueThreadParameter threadParameter)
{
threadParameter.Delegate(threadParameter.Processor, threadParameter.Item);
QueueItemComplete(threadParameter.Item);
});
}
public void RaiseAlert(Model.WorkQueue queueItem, AlertLevel level, string message)
{
WorkQueueTypeProperties prop = _propertiesDictionary[queueItem.WorkQueueTypeEnum];
if (prop.AlertFailedWorkQueue || level == AlertLevel.Critical)
{
ServerPlatform.Alert(AlertCategory.Application, level,
queueItem.WorkQueueTypeEnum.ToString(), AlertTypeCodes.UnableToProcess,
GetWorkQueueContextData(queueItem), TimeSpan.Zero,
"Work Queue item failed: Type={0}, GUID={1}: {2}",
queueItem.WorkQueueTypeEnum,
queueItem.GetKey(), message);
}
}
/// <summary>
/// Insert an EditStudy request.
/// </summary>
/// <param name="context"></param>
/// <param name="studyStorageKey"></param>
/// <param name="serverPartitionKey"></param>
/// <param name="type"></param>
/// <param name="updateItems"></param>
/// <param name="reason"></param>
/// <param name="user"></param>
/// <param name="editType"></param>
/// <param name="priorityEnum">Optional parameter to set the priority of resultant <see cref="WorkQueue"/> items.</param>
/// <returns></returns>
private static WorkQueue InsertExternalEditStudyRequest(IUpdateContext context, ServerEntityKey studyStorageKey, ServerEntityKey serverPartitionKey,
WorkQueueTypeEnum type, List <UpdateItem> updateItems, string reason, string user, EditType editType, WorkQueuePriorityEnum priorityEnum = null)
{
var propertiesBroker = context.GetBroker <IWorkQueueTypePropertiesEntityBroker>();
var criteria = new WorkQueueTypePropertiesSelectCriteria();
criteria.WorkQueueTypeEnum.EqualTo(type);
WorkQueueTypeProperties properties = propertiesBroker.FindOne(criteria);
var broker = context.GetBroker <IWorkQueueEntityBroker>();
var insert = new WorkQueueUpdateColumns();
DateTime now = Platform.Time;
var data = new EditStudyWorkQueueData
{
EditRequest =
{
TimeStamp = now,
UserId = user,
UpdateEntries = updateItems,
Reason = reason,
EditType = editType
}
};
insert.WorkQueueTypeEnum = type;
insert.StudyStorageKey = studyStorageKey;
insert.ServerPartitionKey = serverPartitionKey;
insert.ScheduledTime = now;
insert.ExpirationTime = now.AddSeconds(properties.ExpireDelaySeconds);
insert.WorkQueueStatusEnum = WorkQueueStatusEnum.Pending;
insert.WorkQueuePriorityEnum = priorityEnum ?? properties.WorkQueuePriorityEnum;
insert.Data = XmlUtils.SerializeAsXmlDoc(data);
WorkQueue editEntry = broker.Insert(insert);
if (editEntry == null)
{
throw new ApplicationException(string.Format("Unable to insert an Edit request of type {0} for study for user {1}", type.Description, user));
}
return(editEntry);
}
/// <summary>
/// Simple routine for failing a work queue item.
/// </summary>
/// <param name="item">The item to fail.</param>
/// <param name="failureDescription">The reason for the failure.</param>
private void FailQueueItem(Model.WorkQueue item, string failureDescription)
{
// Must retry to reset the status of the entry in case of db error
// Failure to do so will create stale work queue entry (stuck in "In Progress" state)
// which can only be recovered by restarting the service.
while (true)
{
try
{
WorkQueueTypeProperties prop = _propertiesDictionary[item.WorkQueueTypeEnum];
using (IUpdateContext updateContext = _store.OpenUpdateContext(UpdateContextSyncMode.Flush))
{
IUpdateWorkQueue update = updateContext.GetBroker <IUpdateWorkQueue>();
UpdateWorkQueueParameters parms = new UpdateWorkQueueParameters
{
ProcessorID = ServerPlatform.ProcessorId,
WorkQueueKey = item.GetKey(),
StudyStorageKey = item.StudyStorageKey,
FailureCount = item.FailureCount + 1,
FailureDescription = failureDescription
};
var settings = WorkQueueSettings.Instance;
if ((item.FailureCount + 1) > prop.MaxFailureCount)
{
Platform.Log(LogLevel.Error,
"Failing {0} WorkQueue entry ({1}), reached max retry count of {2}. Failure Reason: {3}",
item.WorkQueueTypeEnum, item.GetKey(), item.FailureCount + 1, failureDescription);
parms.WorkQueueStatusEnum = WorkQueueStatusEnum.Failed;
parms.ScheduledTime = Platform.Time;
parms.ExpirationTime = Platform.Time.AddDays(1);
OnWorkQueueEntryFailed(item, failureDescription);
}
else
{
Platform.Log(LogLevel.Error,
"Resetting {0} WorkQueue entry ({1}) to Pending, current retry count {2}. Failure Reason: {3}",
item.WorkQueueTypeEnum, item.GetKey(), item.FailureCount + 1, failureDescription);
parms.WorkQueueStatusEnum = WorkQueueStatusEnum.Pending;
parms.ScheduledTime = Platform.Time.AddMilliseconds(settings.WorkQueueQueryDelay);
parms.ExpirationTime =
Platform.Time.AddSeconds((prop.MaxFailureCount - item.FailureCount) *
prop.FailureDelaySeconds);
}
if (false == update.Execute(parms))
{
Platform.Log(LogLevel.Error, "Unable to update {0} WorkQueue GUID: {1}", item.WorkQueueTypeEnum,
item.GetKey().ToString());
}
else
{
updateContext.Commit();
break; // done
}
}
}
catch (Exception ex)
{
Platform.Log(LogLevel.Error, "Error occurred when calling FailQueueItem. Retry later. {0}", ex.Message);
_terminateEvent.WaitOne(2000, false);
if (_stop)
{
Platform.Log(LogLevel.Warn, "Service is stopping. Retry to fail the entry is terminated.");
break;
}
}
}
}