Examples with EventListener org.cojen.tupl.diag.EventListener used on opensource projects

Example 1 with EventListener

use of org.cojen.tupl.diag.EventListener in project Tupl by cojen.

the class ChainedEventListener method make.

public static EventListener make(EventListener... listeners) {
    if (listeners == null || listeners.length == 0) {
        return null;
    }
    int count = 0;
    EventListener first = null;
    for (EventListener listener : listeners) {
        if (listener != null) {
            count++;
            if (first == null) {
                first = listener;
            }
        }
    }
    if (count <= 1) {
        return first;
    }
    var rest = new EventListener[count - 1];
    for (int i = 0, j = 0; i < listeners.length; i++) {
        EventListener listener = listeners[i];
        if (listener != null && listener != first) {
            rest[j++] = listener;
        }
    }
    return new ChainedEventListener(first, rest);
}

Example 2 with EventListener

use of org.cojen.tupl.diag.EventListener in project Tupl by cojen.

the class Checkpointer method run.

@Override
public void run() {
    try {
        if (mState == STATE_INIT) {
            // Start with an initial forced checkpoint.
            CoreDatabase db = mDatabaseRef.get();
            if (db != null) {
                db.checkpoint();
            }
            mState = STATE_RUNNING;
        }
        if (mRefQueue != null) {
            // When the checkpoint rate is negative (infinite delay), this thread is
            // suspended until the database isn't referenced anymore, or until the database
            // is explicitly closed.
            mRefQueue.remove();
            close(null);
            return;
        }
        long lastDurationNanos = 0;
        while (true) {
            long delayMillis = (mRateNanos - lastDurationNanos) / 1000000L;
            if (delayMillis > 0) {
                Thread.sleep(delayMillis);
            }
            CoreDatabase db = mDatabaseRef.get();
            if (db == null) {
                close(null);
                return;
            }
            if (isSuspended()) {
                // Don't actually suspend the thread, allowing for weak reference checks.
                lastDurationNanos = 0;
            } else
                try {
                    long startNanos = System.nanoTime();
                    db.checkpoint(mSizeThreshold, mDelayThresholdNanos);
                    long endNanos = System.nanoTime();
                    lastDurationNanos = endNanos - startNanos;
                } catch (DatabaseException e) {
                    EventListener listener = db.eventListener();
                    if (listener != null) {
                        listener.notify(EventType.CHECKPOINT_FAILED, "Checkpoint failed: %1$s", e);
                    }
                    if (!e.isRecoverable()) {
                        throw e;
                    }
                    lastDurationNanos = 0;
                }
        }
    } catch (Throwable e) {
        if (mState != STATE_CLOSED) {
            CoreDatabase db = mDatabaseRef.get();
            if (db != null) {
                Utils.closeQuietly(db, e);
            }
        }
        close(e);
    }
}

Example 3 with EventListener

use of org.cojen.tupl.diag.EventListener in project Tupl by cojen.

the class EventListenerTest method observe.

@Test
public void observe() throws Exception {
    var listener = new Listener();
    listener.notify(EventType.DEBUG, "hello");
    assertEquals("[DEBUG:hello:[]]", listener.mEvents.toString());
    listener = new Listener();
    EventListener filtered = listener.observe(EventType.Category.DEBUG);
    filtered.notify(EventType.DEBUG, "hello");
    assertEquals("[DEBUG:hello:[]]", listener.mEvents.toString());
    assertSame(filtered, filtered.observe(EventType.Category.DEBUG));
    listener = new Listener();
    filtered = listener.observe(new EventType.Category[0]);
    filtered.notify(EventType.DEBUG, "hello");
    assertEquals("[]", listener.mEvents.toString());
    assertSame(filtered, filtered.observe(EventType.Category.DEBUG));
    listener = new Listener();
    filtered = listener.observe(EventType.Category.DEBUG, EventType.Category.DELETION);
    filtered.notify(EventType.DEBUG, "hello");
    filtered.notify(EventType.DELETION_FAILED, "world", 1);
    assertEquals("[DEBUG:hello:[], DELETION_FAILED:world:[1]]", listener.mEvents.toString());
    filtered = listener.observe(Level.WARNING);
    listener.mEvents.clear();
    filtered.notify(EventType.DEBUG, "hello");
    filtered.notify(EventType.DELETION_FAILED, "world", 2);
    assertEquals("[DELETION_FAILED:world:[2]]", listener.mEvents.toString());
    filtered = filtered.observe(Level.INFO);
    listener.mEvents.clear();
    filtered.notify(EventType.DEBUG, "hello");
    filtered.notify(EventType.DELETION_FAILED, "world", 3);
    assertEquals("[]", listener.mEvents.toString());
}

Example 4 with EventListener

use of org.cojen.tupl.diag.EventListener in project Tupl by cojen.

the class RedoEventPrinter method main.

/**
 * @param args [0]: base file, [1]: first log number to read from, [2]: optional crypto
 * class; remaining args are passed to its constructor as separate parameters
 */
@SuppressWarnings("unchecked")
public static void main(String[] args) throws Exception {
    var baseFile = new java.io.File(args[0]);
    long logId = Long.parseLong(args[1]);
    Crypto crypto = null;
    if (args.length > 2) {
        Class clazz = Class.forName(args[2]);
        var types = new Class[args.length - 3];
        var params = new String[types.length];
        for (int i = 0; i < types.length; i++) {
            types[i] = String.class;
            params[i] = args[i + 3];
        }
        crypto = (Crypto) clazz.getConstructor(types).newInstance((Object[]) params);
    }
    EventListener listener = (type, message, messageArgs) -> {
        System.out.println(String.format(message, messageArgs));
    };
    new RedoLog(crypto, baseFile, logId, 0, null).replay(new RedoEventPrinter(listener, EventType.DEBUG), null, null, null);
}

Example 5 with EventListener

use of org.cojen.tupl.diag.EventListener in project Tupl by cojen.

the class EventListenerTest method ignore.

@Test
public void ignore() throws Exception {
    var listener = new Listener();
    assertSame(listener, listener.ignore(new EventType.Category[0]));
    assertSame(listener, listener.ignore(new Level[0]));
    EventListener filtered = listener.ignore(EventType.Category.DEBUG);
    filtered.notify(EventType.DEBUG, "hello");
    filtered.notify(EventType.CHECKPOINT_BEGIN, "world");
    assertEquals("[CHECKPOINT_BEGIN:world:[]]", listener.mEvents.toString());
    assertSame(filtered, filtered.ignore(EventType.Category.DEBUG));
    listener = new Listener();
    filtered = listener.ignore(Level.DEBUG);
    filtered.notify(EventType.DEBUG, "hello");
    filtered.notify(EventType.CHECKPOINT_FAILED, "world");
    assertEquals("[CHECKPOINT_FAILED:world:[]]", listener.mEvents.toString());
    assertSame(filtered, filtered.ignore(Level.DEBUG));
    listener.mEvents.clear();
    filtered = filtered.ignore(Level.WARNING);
    filtered.notify(EventType.DEBUG, "hello");
    filtered.notify(EventType.CHECKPOINT_FAILED, "world");
    assertEquals("[]", listener.mEvents.toString());
    listener.mEvents.clear();
    filtered = filtered.observe(Level.WARNING);
    filtered.notify(EventType.DEBUG, "hello");
    filtered.notify(EventType.CHECKPOINT_FAILED, "world");
    assertEquals("[]", listener.mEvents.toString());
}