Examples with LockLevel org.commonjava.util.partyline.lock.LockLevel used on opensource projects

Example 1 with LockLevel

use of org.commonjava.util.partyline.lock.LockLevel in project partyline by Commonjava.

the class Partyline method waitForReadUnlock.

/**
 * Wait the specified timeout milliseconds for read access on the specified file to become available. Return false
 * if the timeout elapses without the file becoming available for reads. If a {@link RandomAccessJF} is available for
 * the file, don't wait (immediately return true).
 *
 * @see #isReadLocked(File)
 */
public boolean waitForReadUnlock(final File file, final long timeout) throws InterruptedException {
    long to = timeout < 1 ? DEFAULT_TIMEOUT : timeout;
    logger.trace(">>>WAIT (read unlock): {} with timeout: {}", file, to);
    long end = System.currentTimeMillis() + to;
    boolean result = false;
    while (System.currentTimeMillis() < end) {
        LockLevel lockLevel = locks.getLockLevel(file);
        if (lockLevel != LockLevel.delete) {
            result = true;
            break;
        }
        synchronized (locks) {
            locks.wait(100);
        }
        lockLevel = locks.getLockLevel(file);
        if (lockLevel != LockLevel.delete) {
            result = true;
            break;
        }
    }
    logger.trace("<<<WAIT (read unlock) result: {}", result);
    return result;
}

Example 2 with LockLevel

use of org.commonjava.util.partyline.lock.LockLevel in project partyline by Commonjava.

the class Partyline method waitForWriteUnlock.

/**
 * Wait the specified timeout milliseconds for write access on the specified file to become available. Return false
 * if the timeout elapses without the file becoming available for writes.
 *
 * @see #isWriteLocked(File)
 */
// FIXME: How do we prevent new incoming lock requests while we wait?
public boolean waitForWriteUnlock(final File file, long timeout) throws InterruptedException {
    long to = timeout < 1 ? DEFAULT_TIMEOUT : timeout;
    logger.trace(">>>WAIT (write unlock): {} with timeout: {}", file, to);
    long end = System.currentTimeMillis() + to;
    boolean result = false;
    while (System.currentTimeMillis() < end) {
        LockLevel lockLevel = locks.getLockLevel(file);
        if (lockLevel == null) {
            result = true;
            break;
        }
        synchronized (locks) {
            locks.wait(100);
        }
        lockLevel = locks.getLockLevel(file);
        if (lockLevel == null) {
            result = true;
            break;
        }
    }
    logger.trace("<<<WAIT (write unlock) result: {}", result);
    return result;
}

Example 3 with LockLevel

use of org.commonjava.util.partyline.lock.LockLevel in project partyline by Commonjava.

the class InfinispanJFS method getMetadata.

FileMeta getMetadata(final File target, final LocalLockOwner owner) throws IOException {
    String path = target.getAbsolutePath();
    return lockManager.lockAnd(path, (key, opLock) -> {
        FileMeta meta = null;
        TransactionManager transactionManager = metadataCache.getAdvancedCache().getTransactionManager();
        try {
            transactionManager.begin();
            meta = metadataCache.computeIfAbsent(path, (p) -> new FileMeta(p, target.isDirectory(), this.blockSize));
            LockLevel currentLockLevel = meta.getLockLevel(this.nodeKey);
            // Only update the cache if the lock level changed
            if (currentLockLevel == null || currentLockLevel != owner.getLockLevel()) {
                meta.setLock(this.nodeKey, owner.getLockLevel());
                metadataCache.put(path, meta);
            }
            transactionManager.commit();
        } catch (Exception e) {
            logger.error("Failed to execute in transaction. Rolling back. Path: " + path, e);
            try {
                transactionManager.rollback();
            } catch (SystemException e1) {
                logger.error("SystemException during transaction rollback involving path: " + path, e1);
            }
        }
        return meta;
    });
}