public int dump(String filenameOrDirectory, PrintStream out, TimeZone timeZone)
throws IOException {
int logsFound = 0;
for (String fileName : filenamesOf(filenameOrDirectory, getLogPrefix())) {
logsFound++;
out.println("=== " + fileName + " ===");
StoreChannel fileChannel = fileSystem.open(new File(fileName), "r");
ByteBuffer buffer = ByteBuffer.allocateDirect(9 + Xid.MAXGTRIDSIZE + Xid.MAXBQUALSIZE * 10);
long logVersion, prevLastCommittedTx;
try {
long[] header = VersionAwareLogEntryReader.readLogHeader(buffer, fileChannel, false);
logVersion = header[0];
prevLastCommittedTx = header[1];
} catch (IOException ex) {
out.println("Unable to read timestamp information, no records in logical log.");
out.println(ex.getMessage());
fileChannel.close();
throw ex;
}
out.println(
"Logical log version: "
+ logVersion
+ " with prev committed tx["
+ prevLastCommittedTx
+ "]");
LogDeserializer deserializer = new LogDeserializer(buffer, instantiateCommandReaderFactory());
PrintingConsumer consumer = new PrintingConsumer(out, timeZone);
try (Cursor<LogEntry, IOException> cursor = deserializer.cursor(fileChannel)) {
while (cursor.next(consumer)) ;
}
}
return logsFound;
}
/** @return a {@link RequestContext} specifying at which point the store copy started. */
public RequestContext flushStoresAndStreamStoreFiles(StoreWriter writer, boolean includeLogs) {
try {
long lastAppliedTransaction = transactionIdStore.getLastClosedTransactionId();
monitor.startFlushingEverything();
logRotationControl.forceEverything();
monitor.finishFlushingEverything();
ByteBuffer temporaryBuffer = ByteBuffer.allocateDirect(1024 * 1024);
// Copy the store files
monitor.startStreamingStoreFiles();
try (ResourceIterator<File> files = dataSource.listStoreFiles(includeLogs)) {
while (files.hasNext()) {
File file = files.next();
try (StoreChannel fileChannel = fileSystem.open(file, "r")) {
monitor.startStreamingStoreFile(file);
writer.write(
relativePath(storeDirectory, file),
fileChannel,
temporaryBuffer,
file.length() > 0);
monitor.finishStreamingStoreFile(file);
}
}
} finally {
monitor.finishStreamingStoreFiles();
}
return anonymous(lastAppliedTransaction);
} catch (IOException e) {
throw new ServerFailureException(e);
}
}
public boolean recoveryNeededAt(File dataDir, long currentLogVersion) throws IOException {
// We need config to determine where the logical log files are
File neoStorePath = new File(dataDir, NeoStore.DEFAULT_NAME);
if (!fs.fileExists(neoStorePath)) {
// No database in the specified directory.
return false;
}
PhysicalLogFiles logFiles = new PhysicalLogFiles(dataDir, fs);
File log = logFiles.getLogFileForVersion(currentLogVersion);
if (!fs.fileExists(log)) {
// This most likely means that the db has been cleanly shut down, i.e. force then inc log
// version,
// then NOT creating a new log file (will be done the next startup)
return false;
}
try (StoreChannel logChannel = fs.open(log, "r")) {
return LogRecoveryCheck.recoveryRequired(logChannel);
}
}
