public void renameFile(long fileId, String oldFileName, String newFileName) throws IOException {
synchronized (syncObject) {
if (!files.containsKey(fileId)) return;
final OFileClassic file = files.get(fileId);
final String osFileName = file.getName();
if (osFileName.startsWith(oldFileName)) {
final File newFile =
new File(
storageLocal.getStoragePath()
+ File.separator
+ newFileName
+ osFileName.substring(
osFileName.lastIndexOf(oldFileName) + oldFileName.length()));
boolean renamed = file.renameTo(newFile);
while (!renamed) {
OMemoryWatchDog.freeMemoryForResourceCleanup(100);
renamed = file.renameTo(newFile);
}
}
writeNameIdEntry(new NameFileIdEntry(oldFileName, -1), false);
writeNameIdEntry(new NameFileIdEntry(newFileName, fileId), true);
nameIdMap.remove(oldFileName);
nameIdMap.put(newFileName, fileId);
}
}
public void close() throws IOException {
flush();
if (!commitExecutor.isShutdown()) {
commitExecutor.shutdown();
try {
if (!commitExecutor.awaitTermination(5, TimeUnit.MINUTES))
throw new OException("Background data flush task can not be stopped.");
} catch (InterruptedException e) {
OLogManager.instance().error(this, "Data flush thread was interrupted");
Thread.interrupted();
throw new OException("Data flush thread was interrupted", e);
}
}
synchronized (syncObject) {
for (OFileClassic fileClassic : files.values()) {
if (fileClassic.isOpen()) fileClassic.close();
}
if (nameIdMapHolder != null) {
nameIdMapHolder.setLength(0);
for (Map.Entry<String, Long> entry : nameIdMap.entrySet()) {
writeNameIdEntry(new NameFileIdEntry(entry.getKey(), entry.getValue()), false);
}
nameIdMapHolder.getFD().sync();
nameIdMapHolder.close();
}
}
}
public boolean wasSoftlyClosed(long fileId) throws IOException {
synchronized (syncObject) {
OFileClassic fileClassic = files.get(fileId);
if (fileClassic == null) return false;
return fileClassic.wasSoftlyClosed();
}
}
public boolean isOpen(long fileId) {
synchronized (syncObject) {
OFileClassic fileClassic = files.get(fileId);
if (fileClassic != null) return fileClassic.isOpen();
return false;
}
}
private OFileClassic createFile(String fileName) {
OFileClassic fileClassic = new OFileClassic();
String path =
storageLocal
.getVariableParser()
.resolveVariables(storageLocal.getStoragePath() + File.separator + fileName);
fileClassic.init(path, storageLocal.getMode());
return fileClassic;
}
public long isOpen(String fileName) throws IOException {
synchronized (syncObject) {
initNameIdMapping();
final Long fileId = nameIdMap.get(fileName);
if (fileId == null) return -1;
final OFileClassic fileClassic = files.get(fileId);
if (fileClassic == null || !fileClassic.isOpen()) return -1;
return fileId;
}
}
private String doDeleteFile(long fileId) throws IOException {
if (isOpen(fileId)) truncateFile(fileId);
final OFileClassic fileClassic = files.remove(fileId);
String name = null;
if (fileClassic != null) {
name = fileClassic.getName();
if (fileClassic.exists()) fileClassic.delete();
}
return name;
}
private void flushPage(long fileId, long pageIndex, ODirectMemoryPointer dataPointer)
throws IOException {
if (writeAheadLog != null) {
OLogSequenceNumber lsn = ODurablePage.getLogSequenceNumberFromPage(dataPointer);
OLogSequenceNumber flushedLSN = writeAheadLog.getFlushedLSN();
if (flushedLSN == null || flushedLSN.compareTo(lsn) < 0) writeAheadLog.flush();
}
final byte[] content = dataPointer.get(0, pageSize);
OLongSerializer.INSTANCE.serializeNative(MAGIC_NUMBER, content, 0);
final int crc32 = calculatePageCrc(content);
OIntegerSerializer.INSTANCE.serializeNative(crc32, content, OLongSerializer.LONG_SIZE);
final OFileClassic fileClassic = files.get(fileId);
fileClassic.write(pageIndex * pageSize, content);
if (syncOnPageFlush) fileClassic.synch();
}
private void validateFileContent(byte version, int k) throws IOException {
String path =
storageLocal.getConfiguration().getDirectory() + "/readWriteCacheTest" + k + ".tst";
OFileClassic fileClassic = new OFileClassic();
fileClassic.init(path, "r");
fileClassic.open();
for (int i = 0; i < PAGE_COUNT; i++) {
byte[] content = new byte[8];
fileClassic.read(i * (8 + systemOffset) + systemOffset, content, 8);
Assert.assertEquals(
content,
new byte[] {version, 2, 3, seed, 5, 6, (byte) k, (byte) (i & 0xFF)},
" i = " + i);
}
fileClassic.close();
}
private OCachePointer cacheFileContent(long fileId, long pageIndex) throws IOException {
final long startPosition = pageIndex * pageSize;
final long endPosition = startPosition + pageSize;
byte[] content = new byte[pageSize];
OCachePointer dataPointer;
final OFileClassic fileClassic = files.get(fileId);
if (fileClassic.getFilledUpTo() >= endPosition) {
fileClassic.read(startPosition, content, content.length);
final ODirectMemoryPointer pointer = new ODirectMemoryPointer(content);
final OLogSequenceNumber storedLSN = ODurablePage.getLogSequenceNumberFromPage(pointer);
dataPointer = new OCachePointer(pointer, storedLSN);
} else {
fileClassic.allocateSpace((int) (endPosition - fileClassic.getFilledUpTo()));
final ODirectMemoryPointer pointer = new ODirectMemoryPointer(content);
dataPointer = new OCachePointer(pointer, new OLogSequenceNumber(0, -1));
}
return dataPointer;
}
public OPageDataVerificationError[] checkStoredPages(
OCommandOutputListener commandOutputListener) {
final int notificationTimeOut = 5000;
final List<OPageDataVerificationError> errors = new ArrayList<OPageDataVerificationError>();
synchronized (syncObject) {
for (long fileId : files.keySet()) {
OFileClassic fileClassic = files.get(fileId);
boolean fileIsCorrect;
try {
if (commandOutputListener != null)
commandOutputListener.onMessage("Flashing file " + fileClassic.getName() + "... ");
flush(fileId);
if (commandOutputListener != null)
commandOutputListener.onMessage(
"Start verification of content of " + fileClassic.getName() + "file ...");
long time = System.currentTimeMillis();
long filledUpTo = fileClassic.getFilledUpTo();
fileIsCorrect = true;
for (long pos = 0; pos < filledUpTo; pos += pageSize) {
boolean checkSumIncorrect = false;
boolean magicNumberIncorrect = false;
byte[] data = new byte[pageSize];
fileClassic.read(pos, data, data.length);
long magicNumber = OLongSerializer.INSTANCE.deserializeNative(data, 0);
if (magicNumber != MAGIC_NUMBER) {
magicNumberIncorrect = true;
if (commandOutputListener != null)
commandOutputListener.onMessage(
"Error: Magic number for page "
+ (pos / pageSize)
+ " in file "
+ fileClassic.getName()
+ " does not much !!!");
fileIsCorrect = false;
}
final int storedCRC32 =
OIntegerSerializer.INSTANCE.deserializeNative(data, OLongSerializer.LONG_SIZE);
final int calculatedCRC32 = calculatePageCrc(data);
if (storedCRC32 != calculatedCRC32) {
checkSumIncorrect = true;
if (commandOutputListener != null)
commandOutputListener.onMessage(
"Error: Checksum for page "
+ (pos / pageSize)
+ " in file "
+ fileClassic.getName()
+ " is incorrect !!!");
fileIsCorrect = false;
}
if (magicNumberIncorrect || checkSumIncorrect)
errors.add(
new OPageDataVerificationError(
magicNumberIncorrect,
checkSumIncorrect,
pos / pageSize,
fileClassic.getName()));
if (commandOutputListener != null
&& System.currentTimeMillis() - time > notificationTimeOut) {
time = notificationTimeOut;
commandOutputListener.onMessage((pos / pageSize) + " pages were processed ...");
}
}
} catch (IOException ioe) {
if (commandOutputListener != null)
commandOutputListener.onMessage(
"Error: Error during processing of file "
+ fileClassic.getName()
+ ". "
+ ioe.getMessage());
fileIsCorrect = false;
}
if (!fileIsCorrect) {
if (commandOutputListener != null)
commandOutputListener.onMessage(
"Verification of file " + fileClassic.getName() + " is finished with errors.");
} else {
if (commandOutputListener != null)
commandOutputListener.onMessage(
"Verification of file " + fileClassic.getName() + " is successfully finished.");
}
}
return errors.toArray(new OPageDataVerificationError[errors.size()]);
}
}
public void setSoftlyClosed(long fileId, boolean softlyClosed) throws IOException {
synchronized (syncObject) {
OFileClassic fileClassic = files.get(fileId);
if (fileClassic != null && fileClassic.isOpen()) fileClassic.setSoftlyClosed(softlyClosed);
}
}
public void forceSyncStoredChanges() throws IOException {
synchronized (syncObject) {
for (OFileClassic fileClassic : files.values()) fileClassic.synch();
}
}
private void openFile(OFileClassic fileClassic) throws IOException {
if (fileClassic.exists()) {
if (!fileClassic.isOpen()) fileClassic.open();
} else fileClassic.create(-1);
}