/// <summary>
/// Gets the <see cref="StudyStorageLocation"/> for the study associated with the specified <see cref="WorkQueue"/> item.
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public static StudyStorageLocation GetLoadStorageLocation(WorkQueue item)
{
var select = HttpContext.Current.GetSharedPersistentContext().GetBroker<IQueryStudyStorageLocation>();
var parms = new StudyStorageLocationQueryParameters();
parms.StudyStorageKey = item.StudyStorageKey;
IList<StudyStorageLocation> storages = select.Find(parms);
if (storages == null || storages.Count == 0)
{
Platform.Log(LogLevel.Error, "Unable to find storage location for WorkQueue item: {0}",
item.Key.ToString());
throw new ApplicationException("Unable to find storage location for WorkQueue item.");
}
if (storages.Count > 1)
{
Platform.Log(LogLevel.Warn,
"WorkQueueController:LoadWritableStorageLocation: multiple study storage found for work queue item {0}",
item.Key.Key);
}
return storages[0];
}
public IList<StudyStorageLocation> GetStudyStorageLocation(Study study)
{
Platform.CheckForNullReference(study, "Study");
IQueryStudyStorageLocation select = HttpContext.Current.GetSharedPersistentContext().GetBroker<IQueryStudyStorageLocation>();
StudyStorageLocationQueryParameters parms = new StudyStorageLocationQueryParameters
{StudyStorageKey = study.StudyStorageKey};
IList<StudyStorageLocation> storage = select.Find(parms);
if (storage == null)
{
storage = new List<StudyStorageLocation>();
Platform.Log(LogLevel.Warn, "Unable to find storage location for Study item: {0}",
study.GetKey().ToString());
}
if (storage.Count > 1)
{
Platform.Log(LogLevel.Warn,
"StudyController:GetStudyStorageLocation: multiple study storage found for study {0}",
study.GetKey().Key);
}
return storage;
}
private static StudyStorageLocation FindStudyStorageLocation(IUpdateContext context, ServerPartition partition, string studyInstanceUid)
{
var procedure = context.GetBroker<IQueryStudyStorageLocation>();
var parms = new StudyStorageLocationQueryParameters
{
ServerPartitionKey = partition.GetKey(),
StudyInstanceUid = studyInstanceUid
};
return procedure.FindOne(parms);
}
/// <summary>
/// Do the restore.
/// </summary>
/// <param name="queueItem">The queue item to restore.</param>
public void Run(RestoreQueue queueItem)
{
using (RestoreProcessorContext context = new RestoreProcessorContext(queueItem))
{
try
{
// Load up related classes.
using (IReadContext readContext = _nasArchive.PersistentStore.OpenReadContext())
{
_archiveStudyStorage = ArchiveStudyStorage.Load(readContext, queueItem.ArchiveStudyStorageKey);
_serverSyntax = ServerTransferSyntax.Load(readContext, _archiveStudyStorage.ServerTransferSyntaxKey);
_syntax = TransferSyntax.GetTransferSyntax(_serverSyntax.Uid);
StudyStorageLocationQueryParameters parms = new StudyStorageLocationQueryParameters
{StudyStorageKey = queueItem.StudyStorageKey};
IQueryStudyStorageLocation broker = readContext.GetBroker<IQueryStudyStorageLocation>();
_location = broker.FindOne(parms);
if (_location == null)
{
_studyStorage = StudyStorage.Load(readContext, queueItem.StudyStorageKey);
if (_studyStorage==null)
{
DateTime scheduleTime = Platform.Time.AddMinutes(5);
Platform.Log(LogLevel.Error, "Unable to find storage location, rescheduling restore request to {0}",
scheduleTime);
queueItem.FailureDescription = "Unable to find storage location, rescheduling request.";
_nasArchive.UpdateRestoreQueue(queueItem, RestoreQueueStatusEnum.Pending, scheduleTime);
return;
}
}
}
if (_location == null)
Platform.Log(LogLevel.Info, "Starting restore of nearline study: {0}", _studyStorage.StudyInstanceUid);
else
Platform.Log(LogLevel.Info, "Starting restore of online study: {0}", _location.StudyInstanceUid);
// If restoring a Nearline study, select a filesystem
string destinationFolder;
if (_location == null)
{
ServerFilesystemInfo fs = _nasArchive.Selector.SelectFilesystem();
if (fs == null)
{
DateTime scheduleTime = Platform.Time.AddMinutes(5);
Platform.Log(LogLevel.Error, "No writeable filesystem for restore, rescheduling restore request to {0}",
scheduleTime);
queueItem.FailureDescription = "No writeable filesystem for restore, rescheduling request.";
_nasArchive.UpdateRestoreQueue(queueItem, RestoreQueueStatusEnum.Pending, scheduleTime);
return;
}
destinationFolder = Path.Combine(fs.Filesystem.FilesystemPath, _nasArchive.ServerPartition.PartitionFolder);
}
else
destinationFolder = _location.GetStudyPath();
// Get the zip file path from the xml data in the ArchiveStudyStorage entry
// Also store the "StudyFolder" for use below
string studyFolder = String.Empty;
string filename = String.Empty;
string studyInstanceUid = String.Empty;
XmlElement element = _archiveStudyStorage.ArchiveXml.DocumentElement;
if (element!=null)
foreach (XmlElement node in element.ChildNodes)
if (node.Name.Equals("StudyFolder"))
studyFolder = node.InnerText;
else if (node.Name.Equals("Filename"))
filename = node.InnerText;
else if (node.Name.Equals("Uid"))
studyInstanceUid = node.InnerText;
string zipFile = Path.Combine(_nasArchive.NasPath, studyFolder);
zipFile = Path.Combine(zipFile, studyInstanceUid);
zipFile = Path.Combine(zipFile, filename);
// Do a test read of the zip file. If it succeeds, the file is available, if it
// fails, we just set back to pending and recheck.
try
{
FileStream stream = File.OpenRead(zipFile);
// Read a byte, just in case that makes a difference.
stream.ReadByte();
stream.Close();
stream.Dispose();
}
catch (Exception ex)
{
DateTime scheduledTime = Platform.Time.AddSeconds(NasSettings.Default.ReadFailRescheduleDelaySeconds);
Platform.Log(LogLevel.Error, ex, "Archive {0} for Study {1} is unreadable, rescheduling restore to {2}",
zipFile, _studyStorage == null ? (_location == null ? string.Empty : _location.StudyInstanceUid) : _studyStorage.StudyInstanceUid,
scheduledTime);
// Just reschedule in "Restoring" state, the file is unreadable.
_nasArchive.UpdateRestoreQueue(queueItem, RestoreQueueStatusEnum.Restoring,
scheduledTime);
return;
}
if (_location == null)
RestoreNearlineStudy(queueItem, zipFile, destinationFolder, studyFolder);
else
RestoreOnlineStudy(queueItem, zipFile, destinationFolder);
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e, "Unexpected exception processing restore request for {0} on archive {1}",
_studyStorage == null ? (_location == null ? string.Empty : _location.StudyInstanceUid) : _studyStorage.StudyInstanceUid,
_nasArchive.PartitionArchive.Description);
queueItem.FailureDescription = e.Message;
_nasArchive.UpdateRestoreQueue(queueItem, RestoreQueueStatusEnum.Failed, Platform.Time);
}
}
}
protected bool GetStudyStorageLocation(ServerEntityKey partitionKey, string studyInstanceUid, out StudyStorageLocation location)
{
using (IReadContext context = PersistentStoreRegistry.GetDefaultStore().OpenReadContext())
{
IQueryStudyStorageLocation procedure = context.GetBroker<IQueryStudyStorageLocation>();
StudyStorageLocationQueryParameters parms = new StudyStorageLocationQueryParameters();
parms.ServerPartitionKey = partitionKey;
parms.StudyInstanceUid = studyInstanceUid;
location = procedure.FindOne(parms);
return location != null;
}
}
/// <summary>
/// Do the restore.
/// </summary>
/// <param name="queueItem">The queue item to restore.</param>
public void Run(RestoreQueue queueItem)
{
using (var context = new RestoreProcessorContext(queueItem))
{
try
{
// Load up related classes.
using (IReadContext readContext = _hsmArchive.PersistentStore.OpenReadContext())
{
_archiveStudyStorage = ArchiveStudyStorage.Load(readContext, queueItem.ArchiveStudyStorageKey);
_serverSyntax = ServerTransferSyntax.Load(readContext, _archiveStudyStorage.ServerTransferSyntaxKey);
_syntax = TransferSyntax.GetTransferSyntax(_serverSyntax.Uid);
var parms = new StudyStorageLocationQueryParameters
{StudyStorageKey = queueItem.StudyStorageKey};
var broker = readContext.GetBroker<IQueryStudyStorageLocation>();
_location = broker.FindOne(parms);
if (_location == null)
{
_studyStorage = StudyStorage.Load(readContext, queueItem.StudyStorageKey);
if (_studyStorage==null)
{
DateTime scheduleTime = Platform.Time.AddMinutes(5);
Platform.Log(LogLevel.Error, "Unable to find storage location, rescheduling restore request to {0}",
scheduleTime);
queueItem.FailureDescription = "Unable to find storage location, rescheduling request.";
_hsmArchive.UpdateRestoreQueue(queueItem, RestoreQueueStatusEnum.Pending, scheduleTime);
return;
}
}
}
if (_location == null)
{
Platform.Log(LogLevel.Info, "Starting restore of nearline study: {0}",
_studyStorage.StudyInstanceUid);
// Get the zip file path from the xml data in the ArchiveStudyStorage entry
// Also store the "StudyFolder" for use below
string studyFolder;
string zipFile = GetZipFileName(out studyFolder);
// Do a test read of the zip file. If it succeeds, the file is available, if it
// fails, we just set back to pending and recheck.
if (!CanReadZip(zipFile, queueItem))
return;
RestoreNearlineStudy(queueItem, zipFile, studyFolder);
}
else
{
Platform.Log(LogLevel.Info, "Starting restore of online study: {0}", _location.StudyInstanceUid);
// Get the zip file path from the xml data in the ArchiveStudyStorage entry
// Also store the "StudyFolder" for use below
string studyFolder;
string zipFile = GetZipFileName(out studyFolder);
// Do a test read of the zip file. If it succeeds, the file is available, if it
// fails, we just set back to pending and recheck.
if (!CanReadZip(zipFile, queueItem))
return;
RestoreOnlineStudy(queueItem, zipFile, _location.GetStudyPath());
}
}
catch (Exception e)
{
Platform.Log(LogLevel.Error, e, "Unexpected exception processing restore request for {0} on archive {1}",
_studyStorage == null ? (_location == null ? string.Empty : _location.StudyInstanceUid) : _studyStorage.StudyInstanceUid,
_hsmArchive.PartitionArchive.Description);
queueItem.FailureDescription = e.Message;
_hsmArchive.UpdateRestoreQueue(queueItem, RestoreQueueStatusEnum.Failed, Platform.Time);
}
}
}
private StudyStorageLocation ReloadStorageLocation()
{
using (IReadContext readContext = PersistentStoreRegistry.GetDefaultStore().OpenReadContext())
{
var parms = new StudyStorageLocationQueryParameters {StudyStorageKey = _location.Key};
var broker = readContext.GetBroker<IQueryStudyStorageLocation>();
_location = broker.FindOne(parms);
}
return _location;
}
