Ejemplo n.º 1
0
  protected synchronized void intialize() throws Exception {
    if (isStarted()) {
      if (this.initialized == false) {
        if (this.directory == null) {
          this.directory =
              new File(IOHelper.getDefaultDataDirectory() + File.pathSeparator + "delayedDB");
        }
        IOHelper.mkdirs(this.directory);
        lock();
        this.journal = new Journal();
        this.journal.setDirectory(directory);
        this.journal.setMaxFileLength(getJournalMaxFileLength());
        this.journal.setWriteBatchSize(getJournalMaxWriteBatchSize());
        this.journal.start();
        this.pageFile = new PageFile(directory, "tmpDB");
        this.pageFile.setEnablePageCaching(getIndexEnablePageCaching());
        this.pageFile.setPageSize(getIndexPageSize());
        this.pageFile.setWriteBatchSize(getIndexWriteBatchSize());
        this.pageFile.setPageCacheSize(getIndexCacheSize());
        this.pageFile.load();

        this.pageFile
            .tx()
            .execute(
                new Transaction.Closure<IOException>() {
                  public void execute(Transaction tx) throws IOException {
                    if (pageFile.getPageCount() == 0) {
                      Page<MetaData> page = tx.allocate();
                      assert page.getPageId() == 0;
                      page.set(metaData);
                      metaData.page = page;
                      metaData.createIndexes(tx);
                      tx.store(metaData.page, metaDataMarshaller, true);

                    } else {
                      Page<MetaData> page = tx.load(0, metaDataMarshaller);
                      metaData = page.get();
                      metaData.page = page;
                    }
                    metaData.load(tx);
                    metaData.loadLists(tx, persistentLists);
                  }
                });
        this.pageFile.flush();

        if (cleanupInterval > 0) {
          if (scheduler == null) {
            scheduler = new Scheduler(PListStoreImpl.class.getSimpleName());
            scheduler.start();
          }
          scheduler.executePeriodically(this, cleanupInterval);
        }
        this.initialized = true;
        LOG.info(this + " initialized");
      }
    }
  }
Ejemplo n.º 2
0
  @Test
  public void testDeleteOnUnlockIfLocked() throws Exception {

    File lockFile = new File(IOHelper.getDefaultDataDirectory(), "lockToTest2");
    IOHelper.mkdirs(lockFile.getParentFile());
    lockFile.createNewFile();

    LockFile underTest = new LockFile(lockFile, true);

    underTest.lock();

    assertTrue("valid", underTest.keepAlive());

    underTest.unlock();

    assertFalse("file deleted on unlock", lockFile.exists());
  }
Ejemplo n.º 3
0
  @Test
  public void testNoDeleteOnUnlockIfNotLocked() throws Exception {

    File lockFile = new File(IOHelper.getDefaultDataDirectory(), "lockToTest1");
    IOHelper.mkdirs(lockFile.getParentFile());
    lockFile.createNewFile();

    LockFile underTest = new LockFile(lockFile, true);

    underTest.lock();

    lockFile.delete();

    assertFalse("no longer valid", underTest.keepAlive());

    // a slave gets in
    lockFile.createNewFile();

    underTest.unlock();

    assertTrue("file still exists after unlock when not locked", lockFile.exists());
  }