/**
* 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;
}
/**
* 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;
}
/**
* Close the network file
*
* @param sess SrvSession
* @param netFile NetworkFile
* @exception IOException
*/
public void closeFile(SrvSession sess, NetworkFile netFile) throws IOException {
// Close the cached network file
if (netFile instanceof CachedNetworkFile) {
// Get the cached network file
CachedNetworkFile cacheFile = (CachedNetworkFile) netFile;
cacheFile.closeFile();
// Get the file segment details
FileSegment fileSeg = cacheFile.getFileSegment();
// Check if the file data has been updated, if so then queue a file save
if (fileSeg.isUpdated() && netFile.hasDeleteOnClose() == false) {
// Set the modified date/time and file size for the file
File tempFile = new File(fileSeg.getTemporaryFile());
netFile.setModifyDate(tempFile.lastModified());
netFile.setFileSize(tempFile.length());
// Queue a file save request to save the data back to the repository, if not already queued
if (fileSeg.isSaveQueued() == false) {
// Create a file save request for the updated file segment
SingleFileRequest fileReq =
new SingleFileRequest(
FileRequest.SAVE,
cacheFile.getFileId(),
cacheFile.getStreamId(),
fileSeg.getInfo(),
netFile.getFullName(),
cacheFile.getFileState());
// Check if there are any attributes to be added to the file request
if (hasRequiredAttributes() && sess != null) {
// Check if the user name is required
if (m_reqAttributes.containsString(FileRequest.AttrUserName)) {
// Add the user name attribute
ClientInfo cInfo = sess.getClientInformation();
String userName = "";
if (cInfo != null && cInfo.getUserName() != null) userName = cInfo.getUserName();
fileReq.addAttribute(new NameValue(FileRequest.AttrUserName, userName));
}
// Check if the protocol type is required
if (m_reqAttributes.containsString(FileRequest.AttrProtocol)) {
// Add the protocol type attribute
fileReq.addAttribute(new NameValue(FileRequest.AttrProtocol, sess.getProtocolName()));
}
}
// Set the file segment status
fileSeg.setStatus(FileSegmentInfo.SaveWait, true);
// Queue the file save request
queueFileRequest(fileReq);
} else if (Debug.EnableInfo && hasDebug()) {
// DEBUG
Debug.println("## FileLoader Save already queued for " + fileSeg);
}
}
// Update the cache timeout for the temporary file if there are no references to the file. If
// the file was
// opened for sequential access only it will be expired quicker.
else if (cacheFile.getFileState().getOpenCount() == 0) {
// If the file was opened for sequential access only then we can delete it from the
// temporary area
// sooner
long tmo = System.currentTimeMillis();
if (cacheFile.isSequentialOnly()) tmo += SequentialFileExpire;
else tmo += m_stateCache.getFileStateExpireInterval();
// Set the file state expiry, the local file data will be deleted when the file state
// expires (if there
// are still no references to the file).
cacheFile.getFileState().setExpiryTime(tmo);
}
// If the database is not online and the file is marked for delete then queue a delete file
// request to do
// the
// delete when the database is back online
if (m_dbCtx.isAvailable() == false && netFile.hasDeleteOnClose()) {
// Queue an offline delete request for the file
DeleteFileRequest deleteReq =
new DeleteFileRequest(
cacheFile.getFileId(),
cacheFile.getStreamId(),
fileSeg.getTemporaryFile(),
cacheFile.getFullNameStream(),
cacheFile.getFileState());
m_dbCtx.addOfflineFileDelete(deleteReq);
// DEBUG
if (Debug.EnableInfo && hasDebug())
Debug.println("## FileLoader queued offline delete, " + deleteReq);
}
}
}
