nl.vpro.domain.media.MediaObjectLockerAdmin Maven / Gradle / Ivy

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The basic domain classes for 'media', the core of POMS. Also, the 'update' XML bindings for it. It also contains some closely related domain classes like the enum to contain NICAM kijkwijzer settings.

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package nl.vpro.domain.media;

import lombok.extern.slf4j.Slf4j;

import java.time.Duration;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.Callable;
import java.util.stream.Collectors;

import nl.vpro.jmx.MBeans;
import nl.vpro.util.TimeUtils;
import nl.vpro.util.locker.ObjectLocker;
import nl.vpro.util.locker.ObjectLockerAdmin;

/**
 * @author Michiel Meeuwissen
 * @since 5.8
 */
@Slf4j
class MediaObjectLockerAdmin implements MediaObjectLockerAdminMXBean {

    private final ObjectLockerAdmin objectLockerAdmin = ObjectLockerAdmin.JMX_INSTANCE;

    @Override
    public Set getLocks() {
        return MediaObjectLocker.LOCKED_MEDIA.values().stream().map(ObjectLocker.LockHolder::summarize).collect(Collectors.toSet());
    }

    @Override
    public int getLockCount() {
        return objectLockerAdmin.getLockCount();
    }

    @Override
    public Map getLockCounts() {
        return objectLockerAdmin.getLockCounts();
    }

    @Override
    public int getCurrentCount() {
        return objectLockerAdmin.getCurrentCount();
    }

    @Override
    public Map getCurrentCounts() {
        return objectLockerAdmin.getCurrentCounts();
    }

    @Override
    public int getMaxConcurrency() {
        return objectLockerAdmin.getMaxConcurrency();
    }

    @Override
    public int getMaxDepth() {
        return objectLockerAdmin.getMaxDepth();
    }

    @Override
    public String clearMidLock(String mid, boolean interrupt) {
        ObjectLocker.LockHolder removed = MediaObjectLocker.LOCKED_MEDIA.remove(MediaIdentifiable.Correlation.mid(mid));
        if (removed != null) {
            removed.disable(interrupt);
            return "Removed " + MediaObjectLocker.LOCKED_MEDIA.remove(MediaIdentifiable.Correlation.mid(mid));
        } else {
            return "No such lock " + mid;
        }
    }

    @Override
    public String lockMid(String mid, String duration) {
        final Duration dur = TimeUtils.parseDuration(duration).orElseThrow(() -> new IllegalArgumentException("Cannot parse " + duration));
        return MBeans.returnString("locking mid " + mid, MBeans.multiLine(log, "locking"), dur.compareTo(Duration.ofSeconds(5)) < 0 ? dur : Duration.ZERO, (logger) -> {
            MediaObjectLocker.withMidLock(mid, "explicit lock for " + duration, new Callable() {
                @Override
                public Void call() {
                    try {
                        logger.info("Locked " + mid + " for " + dur);
                        Thread.sleep(dur.toMillis());
                    } catch (InterruptedException ie) {
                        logger.info("Interrupted locking of " + mid);
                    }
                    logger.info("Releasing lock for  " + mid + " now");
                    return null;
                }
            });
        });
    }

    @Override
    public String clearMidLocks(boolean interrupt) {
        final int size = MediaObjectLocker.LOCKED_MEDIA.size();
        for (ObjectLocker.LockHolder value : MediaObjectLocker.LOCKED_MEDIA.values()) {
             value.disable(interrupt);
        }
        return "Removed all mid locks (approx. " + size + ")";
    }

    @Override
    public String getMaxLockAcquireTime() {
        return objectLockerAdmin.getMaxLockAcquireTime();
    }

    @Override
    public void setMaxLockAcquireTime(String duration) {
        objectLockerAdmin.setMaxLockAcquireTime(duration);
    }

    @Override
    public boolean isMonitor() {
        return objectLockerAdmin.isMonitor();
    }

    @Override
    public void setMonitor(boolean monitor) {
        objectLockerAdmin.setMonitor(monitor);
    }
}