Examples of net.jini.core.lease.UnknownLeaseException

net.jini.core.lease.UnknownLeaseException
An exception used to indicate that a lease is not known to the grantor of the lease. This can occur when a lease expires or has been cancelled. @author Sun Microsystems, Inc. @since 1.0

    /** Log and throw a new UnknownLeaseException */
    private UnknownLeaseException throwNewUnknownLeaseException(
            Object cookie) 
  throws UnknownLeaseException
    {
  final UnknownLeaseException ule = new UnknownLeaseException();
  if (leaseLogger.isLoggable(Levels.FAILED)) {
      leaseLogger.log(Levels.FAILED, "unable to find lease for " +
          cookie, ule);
  }

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  throws UnknownLeaseException, LeaseDeniedException
    {
  ready.check();
  final LeaseSet set = (LeaseSet) setTable.get(cookie);
  if (set == null) 
      throw new UnknownLeaseException("No lease for cookie:" + cookie);
  try {
      store.acquireMutatorLock();      


      synchronized (set) {
    if (!isCurrent(set)) {
        // Lease has expired, don't renew
        throw new UnknownLeaseException(
      "Lease has already expired");
    }
    // No one can expire the lease, so it is safe to update.
    // $$$ Might be better to make an extra call to currentTime
    // and calculate the new duration just be for returning

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    // Inherit java doc from super type
    public void cancel(Uuid cookie) throws UnknownLeaseException {
  ready.check();
  final LeaseSet set = (LeaseSet) setTable.get(cookie);
  if (set == null) 
      throw new UnknownLeaseException("No lease for cookie:" + cookie);


  try {
      store.acquireMutatorLock();
      
      synchronized (set) {

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  Long tid = getLeaseTid(uuid);
  TxnManagerTransaction txntr =
          (TxnManagerTransaction)txns.get(tid);


  if (txntr == null)
      throw new UnknownLeaseException();


  // synchronize on the resource so there is not a race condition
  // between renew and expiration
  Result r;
  synchronized (txntr) {
//TODO - check for ACTIVE too?
//TODO - if post-ACTIVE, do anything?  
      if (!ensureCurrent(txntr))
    throw new UnknownLeaseException("Lease already expired");
      long oldExpiration = txntr.getExpiration();
            r = txnLeasePeriodPolicy.renew(txntr, extension);
      txntr.setExpiration(r.expiration);
      expMgr.renewed(txntr);
            if (operationsLogger.isLoggable(Level.FINER)) {

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  Long tid = getLeaseTid(uuid);
  TxnManagerTransaction txntr =
          (TxnManagerTransaction)txns.get(tid);


  if (txntr == null)
      throw new UnknownLeaseException();


  int state = txntr.getState();


//TODO - need better locking here. getState and expiration need to be checked atomically  
 
        if ((state == ACTIVE && txntr.getExpiration()==0) || (state != ACTIVE)) {
      throw new UnknownLeaseException("unknown transaction");
        }


    if (state == ACTIVE) {


    try {
    
      synchronized (txntr) {                      
        if(txntr.getExpiration() == 0) {
          throw new TimeoutExpiredException("Transaction already expired", true);
        }
        txntr.setExpiration(0);  // Mark as done
      }


          abort(((Long)tid).longValue(), false);
      } catch (TransactionException e) {
          throw new
        UnknownLeaseException("When canceling abort threw:" +
          e.getClass().getName() + ":" + e.getLocalizedMessage());
      }
  }

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   */
  // Check to if this server granted the resource
  if (uuid.getMostSignificantBits() != 
      topUuid.getLeastSignificantBits()) 
  {
      throw new UnknownLeaseException();
  }


    }

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  // Has the lease expired?
  if (!ensureCurrent(now)) {
      setRsltIfNeeded("Renwal service let lease expire, " +
          (now - expiration) + " ms late");
      throw new UnknownLeaseException("Lease expired");
  }


  // Have the asked for the right renewal?
  if (!isValidExtension(extension))
      throw new LeaseDeniedException("Did not ask for right extension");

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    public long renew(Uuid cookie, long extension)
        throws LeaseDeniedException, UnknownLeaseException, RemoteException {
  TestRegistration reg = (TestRegistration) regs.get(cookie);
  synchronized (reg) {
            if (reg.getExpiration() > System.currentTimeMillis())
    throw new UnknownLeaseException("unknown lease");


      return generatorLeasePolicy.renew(reg, extension).duration;
  }
    }

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    public void cancel(Uuid cookie)
        throws UnknownLeaseException 
    {
  TestRegistration reg = (TestRegistration) regs.remove(cookie);
  if (reg == null)
      throw new UnknownLeaseException("Not managaing requested lease");
    }

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  createAndRegisterLease(
      new RuntimeException("Synthetic RuntimeException"), true, set);
  createAndRegisterLease(
      new Error("Synthetic Error"), true, set);
  createAndRegisterLease(
      new UnknownLeaseException("Synthetic UnknownLeaseException"), true,
      set);
  createAndRegisterLease(
      new LeaseDeniedException("Synthetic LeaseDeniedException"), true,
      set);
  createAndRegisterLease(

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