How to use

isAlive

method

in

org.eclipse.leshan.server.registration.Registration

/**
 * @return true if the last registration update was done less than lifetime seconds ago.
 */
public boolean isAlive() {
  return isAlive(0);
}

  @Override
  public void run() {
    try {
      Collection<Registration> allRegs = new ArrayList<>();
      try {
        lock.readLock().lock();
        allRegs.addAll(regsByEp.values());
      } finally {
        lock.readLock().unlock();
      }
      for (Registration reg : allRegs) {
        if (!reg.isAlive()) {
          // force de-registration
          Deregistration removedRegistration = removeRegistration(reg.getId());
          expirationListener.registrationExpired(removedRegistration.getRegistration(),
              removedRegistration.getObservations());
        }
      }
    } catch (Exception e) {
      LOG.warn("Unexpected Exception while registration cleaning", e);
    }
  }
}

  @Override
  public void run() {
    try (Jedis j = pool.getResource()) {
      Set<byte[]> endpointsExpired = j.zrangeByScore(EXP_EP, Double.NEGATIVE_INFINITY,
          System.currentTimeMillis(), 0, cleanLimit);
      for (byte[] endpoint : endpointsExpired) {
        Registration r = deserializeReg(j.get(toEndpointKey(endpoint)));
        if (!r.isAlive(gracePeriod)) {
          Deregistration dereg = removeRegistration(j, r.getId(), true);
          if (dereg != null)
            expirationListener.registrationExpired(dereg.getRegistration(), dereg.getObservations());
        }
      }
    } catch (Exception e) {
      LOG.warn("Unexpected Exception while registration cleaning", e);
    }
  }
}

  @Override
  public void run() {
    try (Jedis j = pool.getResource()) {
      Set<byte[]> endpointsExpired = j.zrangeByScore(EXP_EP, Double.NEGATIVE_INFINITY,
          System.currentTimeMillis(), 0, cleanLimit);
      for (byte[] endpoint : endpointsExpired) {
        Registration r = deserializeReg(j.get(toEndpointKey(endpoint)));
        if (!r.isAlive(gracePeriod)) {
          Deregistration dereg = removeRegistration(j, r.getId(), true);
          if (dereg != null)
            expirationListener.registrationExpired(dereg.getRegistration(), dereg.getObservations());
        }
      }
    } catch (Exception e) {
      LOG.warn("Unexpected Exception while registration cleaning", e);
    }
  }
}

if (!removeOnlyIfNotAlive || !r.isAlive(gracePeriod)) {
  long nbRemoved = j.del(toRegIdKey(r.getId()));
  if (nbRemoved > 0) {

if (!removeOnlyIfNotAlive || !r.isAlive(gracePeriod)) {
  long nbRemoved = j.del(toRegIdKey(r.getId()));
  if (nbRemoved > 0) {