public LocatorDatasetReader read() throws IOException {
selectedLocator = locatorWithFallbacks;
DatasetWithFMI originalDatasetWithFMI = null;
do {
try {
originalDatasetWithFMI = readFrom(selectedLocator);
} catch (IOException e) {
LOG.info(
"Failed to read Data Set with iuid={} from {}@{}",
selectedLocator.iuid,
selectedLocator.getFilePath(),
selectedLocator.getStorageSystem(),
e);
selectedLocator = selectedLocator.getFallbackLocator();
if (selectedLocator == null) throw e;
LOG.info("Try read Data Set from alternative location");
}
} while (originalDatasetWithFMI == null);
Attributes dataset = originalDatasetWithFMI.getDataset();
if (context.getRemoteAE() != null) {
storescuService.coerceFileBeforeMerge(selectedLocator, dataset, context);
}
dataset = Utils.mergeAndNormalize(dataset, (Attributes) selectedLocator.getObject());
if (context.getRemoteAE() != null) {
storescuService.coerceAttributes(dataset, context);
}
datasetWithFMI = new DatasetWithFMI(originalDatasetWithFMI.getFileMetaInformation(), dataset);
return this;
}
@Override
protected DataWriter createDataWriter(ArchiveInstanceLocator inst, String tsuid)
throws IOException, UnsupportedStoreSCUException {
if (inst == null || !(inst instanceof ArchiveInstanceLocator))
throw new UnsupportedStoreSCUException("Unable to send instance");
ArchiveAEExtension arcAEExt = context.getLocalAE().getAEExtension(ArchiveAEExtension.class);
Attributes attrs = null;
do {
try {
attrs = readFrom(inst);
} catch (IOException e) {
LOG.info(
"Failed to read Data Set with iuid={} from {}@{}",
inst.iuid,
inst.getFilePath(),
inst.getStorageSystem(),
e);
inst = inst.getFallbackLocator();
if (inst == null) {
throw e;
}
LOG.info("Try to read Data Set from alternative location");
}
} while (attrs == null);
// check for suppression criteria
if (context.getRemoteAE() != null) {
String templateURI =
arcAEExt
.getRetrieveSuppressionCriteria()
.getSuppressionCriteriaMap()
.get(context.getRemoteAE().getAETitle());
if (templateURI != null)
inst = service.applySuppressionCriteria(inst, attrs, templateURI, context);
}
service.coerceFileBeforeMerge(inst, attrs, context);
// here we merge file attributes with attributes in the blob
attrs = Utils.mergeAndNormalize(attrs, (Attributes) inst.getObject());
service.coerceAttributes(attrs, context);
if (!tsuid.equals(inst.tsuid)) Decompressor.decompress(attrs, inst.tsuid);
return new DataWriterAdapter(attrs);
}
private ArchiveInstanceLocator createArchiveInstanceLocator(StoreContext context)
throws InterruptedException, ExecutionException {
StorageContext bulkdataContext =
context.getBulkdataContext().get(); // waits for the store to finish
ArchiveInstanceLocator newLocator =
new ArchiveInstanceLocator.Builder(
context.getInstance().getSopClassUID(),
context.getInstance().getSopInstanceUID(),
context.getFileRef().getTransferSyntaxUID())
.storageSystem(context.getStoreSession().getStorageSystem())
.storagePath(bulkdataContext.getFilePath().toString())
.entryName(context.getFileRef().getEntryName())
.fileTimeZoneID(context.getFileRef().getTimeZone())
.retrieveAETs(context.getInstance().getRawRetrieveAETs())
.withoutBulkdata(context.getFileRef().isWithoutBulkData())
.seriesInstanceUID(context.getAttributes().getString(Tag.SeriesInstanceUID))
.studyInstanceUID(context.getAttributes().getString(Tag.StudyInstanceUID))
.build();
byte[] encodedInstanceAttrs = context.getInstance().getAttributesBlob().getEncodedAttributes();
Attributes instanceAttrs = Utils.decodeAttributes(encodedInstanceAttrs);
newLocator.setObject(instanceAttrs);
return newLocator;
}