Package org.h2.store

Examples of org.h2.store.FileLock

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        testReadOnly();
        testAdapter();
    }

    private static void testAdapter() {
        TraceSystem ts = new TraceSystem(null);
        ts.setLevelFile(TraceSystem.ADAPTER);
        ts.getTrace("test").info("test");
        ts.close();
    }
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        ts.getTrace("test").info("test");
        ts.close();
    }

    private void testTraceDebug() {
        TraceSystem ts = new TraceSystem(null);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ts.setSysOut(new PrintStream(out));
        ts.setLevelSystemOut(TraceSystem.DEBUG);
        ts.getTrace("test").debug(new Exception("error"), "test");
        ts.close();
        String outString = new String(out.toByteArray());
        assertContains(outString, "error");
        assertContains(outString, "Exception");
        assertContains(outString, "test");
    }
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    private void testReadOnly() throws Exception {
        String readOnlyFile = getBaseDir() + "/readOnly.log";
        IOUtils.delete(readOnlyFile);
        IOUtils.openFileOutputStream(readOnlyFile, false).close();
        FileSystem.getInstance(getBaseDir()).setReadOnly(readOnlyFile);
        TraceSystem ts = new TraceSystem(readOnlyFile);
        ts.setLevelFile(TraceSystem.INFO);
        ts.getTrace("test").info("test");
        IOUtils.delete(readOnlyFile);
        ts.close();
    }
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    private void testFutureModificationDate() throws Exception {
        File f = new File(getFile());
        f.delete();
        f.createNewFile();
        f.setLastModified(System.currentTimeMillis() + 10000);
        FileLock lock = new FileLock(new TraceSystem(null), getFile(), Constants.LOCK_SLEEP);
        lock.lock(FileLock.LOCK_FILE);
        lock.unlock();
    }
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    private void testFutureModificationDate() throws Exception {
        File f = new File(getFile());
        f.delete();
        f.createNewFile();
        f.setLastModified(System.currentTimeMillis() + 10000);
        FileLock lock = new FileLock(new TraceSystem(null), getFile(), Constants.LOCK_SLEEP);
        lock.lock(FileLock.LOCK_FILE);
        lock.unlock();
    }
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        lock.lock(FileLock.LOCK_FILE);
        lock.unlock();
    }

    private void testSimple() {
        FileLock lock1 = new FileLock(new TraceSystem(null), getFile(), Constants.LOCK_SLEEP);
        FileLock lock2 = new FileLock(new TraceSystem(null), getFile(), Constants.LOCK_SLEEP);
        lock1.lock(FileLock.LOCK_FILE);
        createClassProxy(FileLock.class);
        assertThrows(ErrorCode.DATABASE_ALREADY_OPEN_1, lock2).
                lock(FileLock.LOCK_FILE);
        lock1.unlock();
        lock2 = new FileLock(new TraceSystem(null), getFile(), Constants.LOCK_SLEEP);
        lock2.lock(FileLock.LOCK_FILE);
        lock2.unlock();
    }
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        }
        assertEquals(0, locks);
    }

    public void run() {
        FileLock lock = null;
        while (!stop) {
            lock = new FileLock(new TraceSystem(null), getFile(), 100);
            try {
                lock.lock(allowSockets ? FileLock.LOCK_SOCKET : FileLock.LOCK_FILE);
                base.trace(lock + " locked");
                locks++;
                if (locks > 1) {
                    System.err.println("ERROR! LOCKS=" + locks + " sockets=" + allowSockets);
                    stop = true;
                }
                Thread.sleep(wait + (int) (Math.random() * wait));
                locks--;
                base.trace(lock + " unlock");
                lock.unlock();
                if (locks < 0) {
                    System.err.println("ERROR! LOCKS=" + locks);
                    stop = true;
                }
            } catch (Exception e) {
                // log(id+" cannot lock: " + e);
            }
            try {
                Thread.sleep(wait + (int) (Math.random() * wait));
            } catch (InterruptedException e1) {
                // ignore
            }
        }
        if (lock != null) {
            lock.unlock();
        }
    }
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                    throw DbException.get(ErrorCode.DATABASE_ALREADY_OPEN_1, "Lock file exists: " + lockFileName);
                }
            }
            if (!readOnly && fileLockMethod != FileLock.LOCK_NO) {
                if (fileLockMethod != FileLock.LOCK_FS) {
                    lock = new FileLock(traceSystem, lockFileName, Constants.LOCK_SLEEP);
                    lock.lock(fileLockMethod);
                    if (autoServerMode) {
                        startServer(lock.getUniqueId());
                    }
                }
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        if (now < reconnectCheckNext) {
            return false;
        }
        reconnectCheckNext = now + reconnectCheckDelay;
        if (lock == null) {
            lock = new FileLock(traceSystem, databaseName + Constants.SUFFIX_LOCK_FILE, Constants.LOCK_SLEEP);
        }
        try {
            Properties prop = lock.load(), first = prop;
            while (true) {
                if (prop.equals(reconnectLastLock)) {
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        System.out.flush();
        System.err.println("ERROR: " + s + " " + e.toString() + " ------------------------------");
        e.printStackTrace();
        try {
            TraceSystem ts = new TraceSystem(null);
            FileLock lock = new FileLock(ts, "error.lock", 1000);
            lock.lock(FileLock.LOCK_FILE);
            FileWriter fw = new FileWriter("error.txt", true);
            PrintWriter pw = new PrintWriter(fw);
            e.printStackTrace(pw);
            pw.close();
            fw.close();
            lock.unlock();
        } catch (Throwable t) {
            t.printStackTrace();
        }
        System.err.flush();
    }
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