/**
* remove file by GUID.
*
* @param guid file GUID
* @return whether remove the file successfully
* @throws Exception
*/
public boolean removeFile(String host, String user, String guid) throws Exception {
// get file data access object
VAFileDao fileDao = DaoFactory.getVAFileDao();
// get the VAFile object with the GUID
VAFile vafile = fileDao.query(guid);
if (vafile == null) {
// if the file is already deleted, should not throw exception
return true;
// throw new Exception("The file with guid \"" + guid
// + "\" is not existed or available");
}
if (vafile.getParent().equals(VAMConstants.NULL)) {
if (fileDao.getActiveReference(vafile.getGuid()) > 0) {
throw new Exception("The file is in used");
}
} else {
if (vafile.getRef() > 0) {
throw new Exception("The file is in used");
}
}
int oldState = vafile.getState();
try {
// remove file
FileOperation.getInstance().removeFile(host, user, vafile, vafile.getSavePath());
} catch (RuntimeException e) {
// restore state
vafile.setState(oldState);
fileDao.update(vafile);
throw new Exception(e);
}
return true;
}
/**
* clear incorrect file.
*
* @param clearFlag the clear flag, which supports VAMConstants.FILE_CLEAR_FLAG_ERROR,
* VAMConstants.FILE_CLEAR_FLAG_NOT_READY, VAMConstants.FILE_CLEAR_FLAG_NOT_FIND_DATA,
* VAMConstants.FILE_CLEAR_FLAG_NOT_FIND_FILE, VAMConstants.FILE_CLEAR_FLAG_NOT_FIND_PARENT,
* it can use or operation,
* @throws Exception
*/
public void clearFile(int clearFlag) throws Exception {
VAFileDao fileDao = DaoFactory.getVAFileDao();
List<VAFile> fileList = getAllFile();
// clear the file whose data can't be found in the database
if ((clearFlag & VAMConstants.FILE_CLEAR_FLAG_NOT_FIND_DATA) != 0) {
Map<String, String> pathMap = new HashMap<String, String>();
for (int i = 0; i < fileList.size(); i++) {
VAFile va = (VAFile) fileList.get(i);
pathMap.put(va.getSavePath(), "ok");
}
File fileDir = new File(VAMConfig.getFileDirLocation());
if (fileDir.exists() && fileDir.isDirectory()) {
checkFile(fileDir, pathMap);
}
}
// clear the file whose physical file can't be found
if ((clearFlag & VAMConstants.FILE_CLEAR_FLAG_NOT_FIND_FILE) != 0) {
File fileDir = new File(VAMConfig.getFileDirLocation());
if (fileDir.exists() && fileDir.isDirectory()) {
for (int i = 0; i < fileList.size(); i++) {
VAFile va = (VAFile) fileList.get(i);
File file = new File(va.getSavePath());
if (!file.exists()) {
fileDao.remove(va.getGuid());
}
}
}
}
// clear the file whose state is error
if ((clearFlag & VAMConstants.FILE_CLEAR_FLAG_ERROR) != 0) {
List<VAObject> errorFiles = fileDao.getErrorFiles();
for (int i = 0; i < errorFiles.size(); i++) {
try {
removeFile(null, null, errorFiles.get(i).getGuid());
} catch (Exception e) {
e.printStackTrace();
}
}
}
// clear the file whose state is not ready
if ((clearFlag & VAMConstants.FILE_CLEAR_FLAG_NOT_READY) != 0) {
List<VAObject> notReadyFiles = fileDao.getNotReadyFiles();
for (int i = 0; i < notReadyFiles.size(); i++) {
VAFile va = new VAFile(notReadyFiles.get(i));
if (VAMUtil.getTimestamp() - va.getTimestamp() > VAMConstants.HOUR / 2) {
removeFile(null, null, va.getGuid());
}
}
}
// clear the file whose parent can't be found
if ((clearFlag & VAMConstants.FILE_CLEAR_FLAG_NOT_FIND_PARENT) != 0) {
fileList = getAllFile();
Map<String, String> guidMap = new HashMap<String, String>();
for (int i = 0; i < fileList.size(); i++) {
VAFile va = (VAFile) fileList.get(i);
guidMap.put(va.getGuid(), "ok");
}
for (int i = 0; i < fileList.size(); i++) {
VAFile va = (VAFile) fileList.get(i);
if (!va.getParent().equals(VAMConstants.NULL)
&& guidMap.get(va.getParent()) == null
&& va.getRef() == 0) {
removeFile(null, null, va.getGuid());
}
}
}
}