Пример #1
0
 @Override
 public void init() {
   txThreadMap = new ArrayMap<Thread, TransactionImpl>((byte) 5, true, true);
   logSwitcherFileName = txLogDir + separator + "active_tx_log";
   txLog1FileName = "tm_tx_log.1";
   txLog2FileName = "tm_tx_log.2";
   try {
     if (fileSystem.fileExists(logSwitcherFileName)) {
       FileChannel fc = fileSystem.open(logSwitcherFileName, "rw");
       byte fileName[] = new byte[256];
       ByteBuffer buf = ByteBuffer.wrap(fileName);
       fc.read(buf);
       fc.close();
       String currentTxLog = txLogDir + separator + UTF8.decode(fileName).trim();
       if (!fileSystem.fileExists(currentTxLog)) {
         throw logAndReturn(
             "TM startup failure",
             new TransactionFailureException(
                 "Unable to start TM, " + "active tx log file[" + currentTxLog + "] not found."));
       }
       txLog = new TxLog(currentTxLog, fileSystem, msgLog);
       msgLog.logMessage("TM opening log: " + currentTxLog, true);
     } else {
       if (fileSystem.fileExists(txLogDir + separator + txLog1FileName)
           || fileSystem.fileExists(txLogDir + separator + txLog2FileName)) {
         throw logAndReturn(
             "TM startup failure",
             new TransactionFailureException(
                 "Unable to start TM, "
                     + "no active tx log file found but found either "
                     + txLog1FileName
                     + " or "
                     + txLog2FileName
                     + " file, please set one of them as active or "
                     + "remove them."));
       }
       ByteBuffer buf = ByteBuffer.wrap(txLog1FileName.getBytes("UTF-8"));
       FileChannel fc = fileSystem.open(logSwitcherFileName, "rw");
       fc.write(buf);
       txLog = new TxLog(txLogDir + separator + txLog1FileName, fileSystem, msgLog);
       msgLog.logMessage("TM new log: " + txLog1FileName, true);
       fc.force(true);
       fc.close();
     }
     tmOk = true;
   } catch (IOException e) {
     log.log(Level.SEVERE, "Unable to start TM", e);
     throw logAndReturn(
         "TM startup failure", new TransactionFailureException("Unable to start TM", e));
   }
 }
 public boolean storeFilesUpgradeable(File neoStoreFile) {
   File storeDirectory = neoStoreFile.getParentFile();
   for (String fileName : fileNamesToExpectedVersions.keySet()) {
     String expectedVersion = fileNamesToExpectedVersions.get(fileName);
     FileChannel fileChannel = null;
     byte[] expectedVersionBytes = UTF8.encode(expectedVersion);
     try {
       File storeFile = new File(storeDirectory, fileName);
       if (!fs.fileExists(storeFile)) {
         return false;
       }
       fileChannel = fs.open(storeFile, "r");
       if (fileChannel.size() < expectedVersionBytes.length) {
         return false;
       }
       fileChannel.position(fileChannel.size() - expectedVersionBytes.length);
       byte[] foundVersionBytes = new byte[expectedVersionBytes.length];
       fileChannel.read(ByteBuffer.wrap(foundVersionBytes));
       if (!expectedVersion.equals(UTF8.decode(foundVersionBytes))) {
         return false;
       }
     } catch (IOException e) {
       throw new RuntimeException(e);
     } finally {
       if (fileChannel != null) {
         try {
           fileChannel.close();
         } catch (IOException e) {
           // Ignore exception on close
         }
       }
     }
   }
   return true;
 }
Пример #3
0
 private int logCount() {
   XaLogicalLog log = neoDataSource().getXaContainer().getLogicalLog();
   int count = 0;
   for (long i = log.getHighestLogVersion() - 1; i >= 0; i--) {
     if (fs.fileExists(log.getFileName(i))) {
       count++;
     } else {
       break;
     }
   }
   return count;
 }
Пример #4
0
  private File fixPath(File dir, StoreFactory sf) {
    try {
      fileSystem.mkdirs(dir);
    } catch (IOException e) {
      throw new UnderlyingStorageException(
          "Unable to create directory path[" + storeDir + "] for Neo4j kernel store.");
    }

    File store = new File(dir, NeoStore.DEFAULT_NAME);
    if (!fileSystem.fileExists(store)) {
      sf.createNeoStore(store).close();
    }
    return store;
  }