protected override int OnStart(StudyLoaderArgs studyLoaderArgs)
{
_sops = null;
EventResult result = EventResult.Success;
var loadedInstances = new AuditedInstances();
try
{
using (var context = new DataAccessContext())
{
IStudy study = context.GetStudyBroker().GetStudy(studyLoaderArgs.StudyInstanceUid);
if (study == null)
{
result = EventResult.MajorFailure;
loadedInstances.AddInstance(studyLoaderArgs.StudyInstanceUid);
throw new NotFoundLoadStudyException(studyLoaderArgs.StudyInstanceUid);
}
loadedInstances.AddInstance(study.PatientId, study.PatientsName, study.StudyInstanceUid);
_sops = study.GetSopInstances().GetEnumerator();
return study.NumberOfStudyRelatedInstances;
}
}
finally
{
AuditHelper.LogOpenStudies(new[] { AuditHelper.LocalAETitle }, loadedInstances, EventSource.CurrentUser, result);
}
}
private void ApplyDefaultDeletionRule(RulesEngineOptions context, StudyEntry study)
{
if (!context.ApplyDeleteActions)
return;
// TODO (CR Jun 2012): Again, seem to use "work item" mutex for all database updates. Should just pass in a boolean.
using (var dac = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var broker = dac.GetStudyBroker();
var dbStudy = broker.GetStudy(study.Study.StudyInstanceUid);
var storageConfiguration = StudyStore.GetConfiguration();
var defaultRule = storageConfiguration.DefaultDeletionRule;
if (defaultRule.Enabled)
{
dbStudy.SetDeleteTime(defaultRule.TimeValue, defaultRule.TimeUnit, TimeOrigin.ReceivedDate, false);
}
else
{
dbStudy.ClearDeleteTime();
}
dac.Commit();
}
}
public void Initialize(StudyLocation location)
{
_location = location;
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var studyBroker = context.GetStudyBroker();
var study = studyBroker.GetStudy(_location.Study.StudyInstanceUid);
if (study != null)
{
_location.Study = study;
if (study.NumberOfStudyRelatedInstances.HasValue)
NumberOfStudyRelatedInstances = study.NumberOfStudyRelatedInstances.Value;
}
}
}
public bool Process()
{
// Decided not to use the command processor here, since we're just removing everything and want to be as forgiving as possible.
try
{
DirectoryUtility.DeleteIfExists(_location.StudyFolder);
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e, "Unable to delete study folder: {0}", _location.StudyFolder);
}
try
{
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var studyBroker = context.GetStudyBroker();
var study = studyBroker.GetStudy(_location.Study.StudyInstanceUid);
if (study != null)
{
studyBroker.Delete(study);
}
context.Commit();
}
Platform.Log(LogLevel.Info, "Deleted study for: {0}:{1}", _location.Study.PatientsName, _location.Study.PatientId);
return true;
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e,
"Unexpected exception when {0} deleting Study related database entries for study: {0}",
_location.Study.StudyInstanceUid);
return false;
}
}
public WorkItemInsertResponse Insert(WorkItemInsertRequest request)
{
// TODO (CR Jun 2012): The fact that there is special processing in here for particular types of work items
// indicates there is something wrong with the design that may make adding custom work item types difficult.
// Maybe the different "processors" need to perform the insert, or at least have some kind of method (rule)
// for processing the insert?
var response = new WorkItemInsertResponse();
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
DateTime now = Platform.Time;
var broker = context.GetWorkItemBroker();
if (request.Request.WorkItemType.Equals(ReindexRequest.WorkItemTypeString))
{
var list = broker.GetWorkItems(request.Request.WorkItemType, null, null);
foreach (var workItem in list)
{
if (workItem.Status == WorkItemStatusEnum.Pending
|| workItem.Status == WorkItemStatusEnum.InProgress)
{
response.Item = WorkItemDataHelper.FromWorkItem(workItem);
return response;
}
}
}
var deleteStudyRequest = request.Request as DeleteStudyRequest;
if (deleteStudyRequest != null)
{
var list = broker.GetWorkItems(request.Request.WorkItemType, null, deleteStudyRequest.Study.StudyInstanceUid);
foreach (var workItem in list)
{
if (workItem.Status == WorkItemStatusEnum.Pending
|| workItem.Status == WorkItemStatusEnum.InProgress)
{
// Mark studies to delete as "deleted" in the database.
var studyBroker = context.GetStudyBroker();
var study = studyBroker.GetStudy(deleteStudyRequest.Study.StudyInstanceUid);
if (study != null)
{
study.Deleted = true;
context.Commit();
}
response.Item = WorkItemDataHelper.FromWorkItem(workItem);
return response;
}
}
}
var item = new WorkItem
{
Request = request.Request,
Progress = request.Progress,
Type = request.Request.WorkItemType,
Priority = request.Request.Priority,
ScheduledTime = now.AddSeconds(WorkItemServiceSettings.Default.InsertDelaySeconds),
ProcessTime = now.AddSeconds(WorkItemServiceSettings.Default.InsertDelaySeconds),
DeleteTime = now.AddMinutes(WorkItemServiceSettings.Default.DeleteDelayMinutes),
ExpirationTime = now.AddSeconds(WorkItemServiceSettings.Default.ExpireDelaySeconds),
RequestedTime = now,
Status = WorkItemStatusEnum.Pending
};
var studyRequest = request.Request as WorkItemStudyRequest;
if (studyRequest != null)
{
item.StudyInstanceUid = studyRequest.Study.StudyInstanceUid;
if (request.Request.WorkItemType.Equals(DeleteStudyRequest.WorkItemTypeString))
{
// Mark studies to delete as "deleted" in the database.
var studyBroker = context.GetStudyBroker();
var study = studyBroker.GetStudy(studyRequest.Study.StudyInstanceUid);
if (study != null)
study.Deleted = true;
}
}
broker.AddWorkItem(item);
context.Commit();
response.Item = WorkItemDataHelper.FromWorkItem(item);
}
// Cache the UserIdentityContext for later use by the shred
if (request.Request.WorkItemType.Equals(ImportFilesRequest.WorkItemTypeString))
UserIdentityCache.Put(response.Item.Identifier,UserIdentityContext.CreateFromCurrentThreadPrincipal());
WorkItemPublishSubscribeHelper.PublishWorkItemChanged(WorkItemsChangedEventType.Update, response.Item);
if (WorkItemProcessor.Instance != null)
WorkItemProcessor.Instance.SignalThread();
return response;
}
private void CheckDeleteStudyCanceled(DataAccessContext context, WorkItem workItem)
{
// Force the study to be visible again if its a DeleteStudyRequest we're canceling
if (workItem.Type.Equals(DeleteStudyRequest.WorkItemTypeString))
{
var studyBroker = context.GetStudyBroker();
var study = studyBroker.GetStudy(workItem.StudyInstanceUid);
if (study != null)
{
study.Deleted = false;
}
}
}
/// <summary>
/// Called on startup to reset InProgress WorkItems back to Pending.
/// </summary>
private void ResetInProgressWorkItems()
{
bool reindexInProgress = false;
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var workItemBroker = context.GetWorkItemBroker();
var list = workItemBroker.GetWorkItems(null, WorkItemStatusEnum.InProgress, null);
foreach (var item in list)
{
item.Status = WorkItemStatusEnum.Pending;
if (item.Type.Equals(ReindexRequest.WorkItemTypeString))
reindexInProgress = true;
}
context.Commit();
}
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var workItemBroker = context.GetWorkItemBroker();
var list = workItemBroker.GetWorkItems(null, WorkItemStatusEnum.DeleteInProgress, null);
foreach (var item in list)
{
item.Status = WorkItemStatusEnum.Deleted;
}
context.Commit();
}
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var workItemBroker = context.GetWorkItemBroker();
var list = workItemBroker.GetWorkItems(null, WorkItemStatusEnum.Canceling, null);
foreach (var item in list)
{
item.Status = WorkItemStatusEnum.Canceled;
if (item.Type.Equals(ReindexRequest.WorkItemTypeString))
reindexInProgress = true;
}
context.Commit();
}
if (reindexInProgress)
{
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var studyBroker = context.GetStudyBroker();
var studyList = studyBroker.GetReindexStudies();
foreach (var item in studyList)
{
item.Reindex = false;
}
context.Commit();
}
}
}
/// <summary>
/// Initialize the Reapply Rules. Loast a list of studies.
/// </summary>
public void Initialize()
{
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var broker = context.GetStudyBroker();
StudyOidList = broker.GetStudyOids();
}
DatabaseStudiesToScan = StudyOidList.Count;
}
private void ProcessStudiesInDatabase()
{
var rulesEngine = RulesEngine.Create();
foreach (var oid in StudyOidList)
{
try
{
// TODO (CR Jun 2012): We don't modify any work items - do we need the mutex?
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var broker = context.GetStudyBroker();
var study = broker.GetStudy(oid);
var studyEntry = study.ToStoreEntry();
var rulesEngineOptions = new RulesEngineOptions
{
ApplyDeleteActions = _request.ApplyDeleteActions,
ApplyRouteActions = _request.ApplyRouteActions
};
if(!string.IsNullOrEmpty(_request.RuleId))
{
rulesEngine.ApplyStudyRule(studyEntry, _request.RuleId, rulesEngineOptions);
}
else
{
rulesEngine.ApplyStudyRules(studyEntry, rulesEngineOptions);
}
EventsHelper.Fire(_studyProcessedEvent, this, new StudyEventArgs { StudyInstanceUid = study.StudyInstanceUid });
}
}
catch (Exception x)
{
Platform.Log(LogLevel.Warn, "Unexpected exception attempting to reapply rules for StudyOid {0}: {1}", oid, x.Message);
}
}
}
private void ProcessStudiesInDatabase()
{
foreach (long oid in StudyOidList)
{
try
{
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var broker = context.GetStudyBroker();
var study = broker.GetStudy(oid);
var location = new StudyLocation(study.StudyInstanceUid);
if (!Directory.Exists(location.StudyFolder))
{
broker.Delete(study);
context.Commit();
EventsHelper.Fire(_studyDeletedEvent, this, new StudyEventArgs { StudyInstanceUid = study.StudyInstanceUid });
Platform.Log(LogLevel.Info, "Deleted Study that wasn't on disk, but in the database: {0}",
study.StudyInstanceUid);
}
else
EventsHelper.Fire(_studyProcessedEvent, this, new StudyEventArgs { StudyInstanceUid = study.StudyInstanceUid });
}
}
catch (Exception x)
{
Platform.Log(LogLevel.Warn, "Unexpected exception attempting to reindex StudyOid {0}: {1}", oid, x.Message);
}
if (_cancelRequested) return;
}
}
private void ResetReindexStudies()
{
var resetStudyUids = new List<string>();
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var studyBroker = context.GetStudyBroker();
var studyList = studyBroker.GetReindexStudies();
foreach (var study in studyList)
{
if (study.Reindex)
{
resetStudyUids.Add(study.StudyInstanceUid);
study.Reindex = false;
}
}
context.Commit();
}
if (resetStudyUids.Count > 0)
EventsHelper.Fire(_studiesRestoredEvent, this, new StudiesEventArgs { StudyInstanceUids = resetStudyUids });
}
/// <summary>
/// Initialize the Reindex. Determine the number of studies in the database and the number of folders on disk to be used
/// for progress.
/// </summary>
public void Initialize()
{
// Before scanning the study folders, cleanup any empty directories.
CleanupFilestoreDirectory();
try
{
DirectoryList = new List<string>(Directory.GetDirectories(FilestoreDirectory));
}
catch (Exception x)
{
Platform.Log(LogLevel.Error, x);
throw;
}
StudyFoldersToScan = DirectoryList.Count;
// TODO (CR Jun 2012): Seems we're using the "work item" mutex for all updates to the database.
// Should we just pass in a boolean specifying whether or not to use a mutex?
using (var context = new DataAccessContext(DataAccessContext.WorkItemMutex))
{
var broker = context.GetStudyBroker();
StudyOidList = new List<long>();
var studyList = broker.GetStudies();
foreach (var study in studyList)
{
study.Reindex = true;
StudyOidList.Add(study.Oid);
}
context.Commit();
}
DatabaseStudiesToScan = StudyOidList.Count;
_threadPool.Start();
}
private bool CheckIfStudyExists()
{
using (var context = new DataAccessContext())
{
var broker = context.GetStudyBroker();
var study = broker.GetStudy(Location.Study.StudyInstanceUid);
if (study != null)
{
Location.Study = study;
return true;
}
}
return false;
}
protected override int OnStart(StudyLoaderArgs studyLoaderArgs)
{
_sops = null;
EventResult result = EventResult.Success;
var loadedInstances = new AuditedInstances();
try
{
using (var context = new DataAccessContext())
{
if (!studyLoaderArgs.Options.IgnoreInUse)
{
var activeUpdateItems =
context.GetWorkItemBroker().GetWorkItems(WorkItemConcurrency.StudyUpdate,
WorkItemStatusFilter.Active,
studyLoaderArgs.StudyInstanceUid);
var activeDeleteItems =
context.GetWorkItemBroker().GetWorkItems(WorkItemConcurrency.StudyDelete,
WorkItemStatusFilter.Active,
studyLoaderArgs.StudyInstanceUid);
if (activeUpdateItems.Any() || activeDeleteItems.Any())
{
var message = string.Format("There are work items actively modifying the study with UID '{0}'.", studyLoaderArgs.StudyInstanceUid);
throw new InUseLoadStudyException(studyLoaderArgs.StudyInstanceUid, message);
}
}
IStudy study = context.GetStudyBroker().GetStudy(studyLoaderArgs.StudyInstanceUid);
if (study == null)
{
result = EventResult.MajorFailure;
loadedInstances.AddInstance(studyLoaderArgs.StudyInstanceUid);
throw new NotFoundLoadStudyException(studyLoaderArgs.StudyInstanceUid);
}
loadedInstances.AddInstance(study.PatientId, study.PatientsName, study.StudyInstanceUid);
_sops = study.GetSopInstances().GetEnumerator();
return study.NumberOfStudyRelatedInstances;
}
}
finally
{
AuditHelper.LogOpenStudies(new[] { AuditHelper.LocalAETitle }, loadedInstances, EventSource.CurrentUser, result);
}
}