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assertFalse("no longer valid", underTest.keepAlive());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