public ReturnTuple<Integer> newCustomer(int id, Timestamp timestamp) throws RemoteException, TransactionAbortedException, InvalidTransactionException { if (!isMaster) { System.out.println("Slave retransmitting newCustomer to master"); return this.getMaster().newCustomer(id, timestamp); } else { timestamp.stamp(); int rid = Integer.parseInt( String.valueOf(id) + String.valueOf(Calendar.getInstance().get(Calendar.MILLISECOND)) + String.valueOf(Math.round(Math.random() * 100 + 1))); NewCustomerWithIdRMICommand nc = new NewCustomerWithIdRMICommand(carGroup, flightGroup, roomGroup, id, rid); nc.setTimestampObject(timestamp); ReturnTuple<Integer> result = null; try { overseer.validTransaction(id); lm.Lock(id, Customer.getKey(rid), nc.getRequiredLock()); nc.execute(); result = new ReturnTuple<Integer>(rid, nc.success.timestamp); overseer.addCommandToTransaction(id, nc); } catch (DeadlockException d) { timestamp.stamp(); overseer.abort(id); timestamp.stamp(); throw new TransactionAbortedException(timestamp); } catch (TransactionAbortedException tae) { tae.t = timestamp; throw tae; } catch (InvalidTransactionException ite) { ite.t = timestamp; throw ite; } result.timestamp.stamp(); return result; } }
// I opted to pass in customerID instead. This makes testing easier public ReturnTuple<Boolean> newCustomer(int id, int customerID, Timestamp timestamp) throws RemoteException, TransactionAbortedException, InvalidTransactionException { if (!isMaster) { System.out.println("Slave retransmitting newCustomer to master"); return this.getMaster().newCustomer(id, customerID, timestamp); } else { timestamp.stamp(); NewCustomerWithIdRMICommand ncwi = new NewCustomerWithIdRMICommand(carGroup, flightGroup, roomGroup, id, customerID); ncwi.setTimestampObject(timestamp); ReturnTuple<Boolean> result = null; try { overseer.validTransaction(id); lm.Lock(id, Customer.getKey(customerID), ncwi.getRequiredLock()); ncwi.execute(); result = ncwi.success; if (result.result) overseer.addCommandToTransaction(id, ncwi); } catch (DeadlockException d) { timestamp.stamp(); overseer.abort(id); timestamp.stamp(); throw new TransactionAbortedException(timestamp); } catch (TransactionAbortedException tae) { tae.t = timestamp; throw tae; } catch (InvalidTransactionException ite) { ite.t = timestamp; throw ite; } result.timestamp.stamp(); return result; } }