/**
* Store a file
*
* @param req FileRequest
* @return int
* @exception Exception
*/
public int storeFile(FileRequest req) throws Exception {
// Check for a single file request
int saveSts = StsError;
SingleFileRequest saveReq = (SingleFileRequest) req;
// Check if the temporary file still exists, if not then the file has been deleted from the
// filesystem
File tempFile = new File(saveReq.getTemporaryFile());
FileSegment fileSeg = findFileSegmentForPath(saveReq.getVirtualPath());
if (tempFile.exists() == false || fileSeg == null) {
// DEBUG
if (Debug.EnableInfo && hasDebug()) Debug.println(" Temporary file deleted");
// Return an error status
return StsError;
}
// Run any file store processors
runFileStoreProcessors(m_dbCtx, saveReq.getFileState(), fileSeg);
// Update the segment status, and clear the updated flag
fileSeg.setStatus(FileSegmentInfo.Saving);
fileSeg.getInfo().setUpdated(false);
// Save the file data
try {
// Save the file data and get the assigned object id
String objectId =
saveFileData(saveReq.getFileId(), saveReq.getStreamId(), fileSeg, req.getAttributes());
// Save the object id to the mapping database
getDBObjectIdInterface().saveObjectId(saveReq.getFileId(), saveReq.getStreamId(), objectId);
// Indicate that the save was successful
saveSts = StsSuccess;
} catch (DBException ex) {
// DEBUG
if (Debug.EnableError && hasDebug()) Debug.println(ex);
// Indicate the file save failed
saveSts = StsError;
} catch (IOException ex) {
// DEBUG
if (Debug.EnableError && hasDebug()) Debug.println(ex);
// Indicate the file save failed
saveSts = StsError;
}
// Update the segment status
if (saveSts == StsSuccess) fileSeg.setStatus(FileSegmentInfo.Saved, false);
else fileSeg.setStatus(FileSegmentInfo.Error, false);
// Return the data save status
return saveSts;
}
/**
* Load a file
*
* @param req FileRequest
* @return int
* @exception Exception
*/
public int loadFile(FileRequest req) throws Exception {
// DEBUG
long startTime = 0L;
SingleFileRequest loadReq = (SingleFileRequest) req;
if (Debug.EnableInfo && hasDebug()) {
Debug.println(
"## ObjIdLoader loadFile() req="
+ loadReq.toString()
+ ", thread="
+ Thread.currentThread().getName());
startTime = System.currentTimeMillis();
}
// Check if the temporary file still exists, if not then the file has been deleted from the
// filesystem
File tempFile = new File(loadReq.getTemporaryFile());
FileSegment fileSeg = findFileSegmentForPath(loadReq.getVirtualPath());
if (tempFile.exists() == false || fileSeg == null) {
// DEBUG
if (Debug.EnableInfo && hasDebug()) Debug.println(" Temporary file deleted");
// Return an error status
fileSeg.setStatus(FileSegmentInfo.Error, false);
return StsError;
}
// DEBUG
if (Debug.EnableInfo && hasDebug())
Debug.println(
"## ObjIdLoader fileSeg="
+ fileSeg.getTemporaryFile()
+ ", virtPath="
+ loadReq.getVirtualPath());
// Load the file data
int loadSts = StsRequeue;
String objectId = null;
int fileId = loadReq.getFileId();
int strmId = loadReq.getStreamId();
try {
// Update the segment status
fileSeg.setStatus(FileSegmentInfo.Loading);
// Get the object id for the file
objectId = getDBObjectIdInterface().loadObjectId(fileId, strmId);
if (objectId != null) {
// Load the file data
loadFileData(fileId, strmId, objectId, fileSeg);
// Set the load status
loadSts = StsSuccess;
// DEBUG
if (Debug.EnableInfo && hasDebug()) {
long endTime = System.currentTimeMillis();
Debug.println(
"## ObjIdLoader loaded fid="
+ loadReq.getFileId()
+ ", stream="
+ loadReq.getStreamId()
+ ", time="
+ (endTime - startTime)
+ "ms");
}
} else {
// DEBUG
if (Debug.EnableInfo && hasDebug())
Debug.println(
"## ObjIdLoader No object id mapping for fid="
+ loadReq.getFileId()
+ ", stream="
+ loadReq.getStreamId());
// Indicate a load success
loadSts = StsSuccess;
}
} catch (DBException ex) {
// DEBUG
if (Debug.EnableError && hasDebug()) Debug.println(ex);
// Indicate the file load failed
loadSts = StsError;
} catch (FileOfflineException ex) {
// DEBUG
if (Debug.EnableError && hasDebug()) Debug.println(ex);
// Indicate the file load failed
loadSts = StsError;
} catch (IOException ex) {
// DEBUG
if (Debug.EnableError && hasDebug()) Debug.println(ex);
// Indicate the file load failed
loadSts = StsRequeue;
} catch (Exception ex) {
// DEBUG
if (Debug.EnableError && hasDebug()) Debug.println(ex);
// Indicate the file load failed
loadSts = StsError;
}
// Clear the last modified date/time of the temporary file to indicate it has not been updated
tempFile.setLastModified(0L);
// Check if the file was loaded successfully
if (loadSts == StsSuccess) {
// Signal that the file data is available
fileSeg.signalDataAvailable();
// Update the file status
fileSeg.setStatus(FileSegmentInfo.Available, false);
// Run the file load processors
runFileLoadedProcessors(getContext(), loadReq.getFileState(), fileSeg);
} else if (loadSts == StsError) {
// Set the file status to indicate error to any client reading threads
fileSeg.setStatus(FileSegmentInfo.Error, false);
// Wakeup any threads waiting on data for this file
fileSeg.setReadableLength(0L);
fileSeg.signalDataAvailable();
// Delete the temporary file
fileSeg.deleteTemporaryFile();
}
// Return the load file status
return loadSts;
}
