Examples of com.cloud.utils.db.Transaction

com.cloud.utils.db.Transaction
Transaction abstracts away the Connection object in JDBC. It allows the following things that the Connection object does not. 1. Transaction can be started at an entry point and whether the DB actions should be auto-commit or not determined at that point. 2. DB Connection is allocated only when it is needed. 3. Code does not need to know if a transaction has been started or not. It just starts/ends a transaction and we resolve it correctly with the previous actions. Note that this class is not synchronous but it doesn't need to be because it is stored with TLS and is one per thread. Use appropriately.


    }


    @Override
    public void persist(long vmId, List<String> computeTags) {
        Transaction txn = Transaction.currentTxn();


        txn.start();
        SearchCriteria<VMComputeTagVO> sc = VmIdSearch.create();
        sc.setParameters("vmId", vmId);
        expunge(sc);


        for (String tag : computeTags) {
            if(tag != null){
                tag = tag.trim();
                if(tag.length() > 0) {
                    VMComputeTagVO vo = new VMComputeTagVO(vmId, tag);
                    persist(vo);
                }
            }
        }
        txn.commit();
    }

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    }


    @Override
    @DB
    public VMEntityVO persist(VMEntityVO vm) {
        Transaction txn = Transaction.currentTxn();
        txn.start();


        VMEntityVO dbVO = super.persist(vm);


        saveVmNetworks(vm);
        loadVmNetworks(dbVO);
        saveVmReservation(vm);
        loadVmReservation(dbVO);
        saveComputeTags(vm.getId(), vm.getComputeTags());
        loadComputeTags(dbVO);
        saveRootDiskTags(vm.getId(), vm.getRootDiskTags());
        loadRootDiskTags(dbVO);


        txn.commit();


        return dbVO;
    }

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        return virtualRouter;
    }


    @DB
    public void processStopOrRebootAnswer(final DomainRouterVO router, Answer answer) {
        final Transaction txn = Transaction.currentTxn();
        try {
            txn.start();
            //FIXME!!! - UserStats command should grab bytesSent/Received for all guest interfaces of the VR
            List<Long> routerGuestNtwkIds = _routerDao.getRouterNetworks(router.getId());
            for (Long guestNtwkId : routerGuestNtwkIds) {
                final UserStatisticsVO userStats = _userStatsDao.lock(router.getAccountId(), router.getDataCenterId(),
                        guestNtwkId, null, router.getId(), router.getType().toString());
            if (userStats != null) {
                final long currentBytesRcvd = userStats.getCurrentBytesReceived();
                userStats.setCurrentBytesReceived(0);
                userStats.setNetBytesReceived(userStats.getNetBytesReceived() + currentBytesRcvd);


                final long currentBytesSent = userStats.getCurrentBytesSent();
                userStats.setCurrentBytesSent(0);
                userStats.setNetBytesSent(userStats.getNetBytesSent() + currentBytesSent);
                _userStatsDao.update(userStats.getId(), userStats);
                s_logger.debug("Successfully updated user statistics as a part of domR " + router + " reboot/stop");
            } else {
                s_logger.warn("User stats were not created for account " + router.getAccountId() + " and dc " + router.getDataCenterId());
            }
            }
            
            txn.commit();
        } catch (final Exception e) {
            txn.rollback();
            throw new CloudRuntimeException("Problem updating stats after reboot/stop ", e);
        }
    }

View Full Code Here

                    router.setIsPriorityBumpUp(isBumped);
                    updated = true;
                }
            }
            if (updated) {
                Transaction txn = Transaction.open(Transaction.CLOUD_DB);
                try {
                    txn.start();
                    _routerDao.update(router.getId(), router);
                    txn.commit();
                } catch (Exception e) {
                    txn.rollback();
                    s_logger.warn("Unable to update router status for account: " + router.getAccountId());
                } finally {
                    txn.close();
                }
            }
            RedundantState currState = router.getRedundantState();
            if (prevState != currState) {
                String title = "Redundant virtual router " + router.getInstanceName() +

View Full Code Here

    }


    @Override
    @DB
    public VMReservationVO persist(VMReservationVO reservation) {
        Transaction txn = Transaction.currentTxn();
        txn.start();


        VMReservationVO dbVO = super.persist(reservation);


        saveVolumeReservation(reservation);
        loadVolumeReservation(dbVO);


        txn.commit();


        return dbVO;
    }

View Full Code Here

                //also add the required configuration to the dnsmasq for supporting dhcp and dns on the new ip.
                configDnsMasq(router, network, cmds);
                boolean result = sendCommandsToRouter(router, cmds);
                if (result == false) {
                    NicIpAliasVO ipAliasVO = _nicIpAliasDao.findByInstanceIdAndNetworkId(network.getId(), router.getId());
                    Transaction txn = Transaction.currentTxn();
                    txn.start();
                    _nicIpAliasDao.expunge(ipAliasVO.getId());
                    _ipAddressDao.unassignIpAddress(routerPublicIP.getId());
                    txn.commit();
                    throw new CloudRuntimeException("failed to configure ip alias on the router as a part of dhcp config");
                }
            }
            return true;
        }

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            }
            createDeleteIpAliasCommand(router, revokedIpAliasTOs, activeIpAliasTOs, network.getId(), cmds);
            configDnsMasq(router, network, cmds);
            boolean result = sendCommandsToRouter(router, cmds);
            if (result) {
                Transaction txn= Transaction.currentTxn();
                txn.start();
                for (NicIpAliasVO revokedAliasVO : revokedIpAliasVOs) {
                    _nicIpAliasDao.expunge(revokedAliasVO.getId());
                }
                txn.commit();
                return true;
            }
        }
        return  false;
    }

View Full Code Here


    }


    @Override
    public void persist(long vmId, List<String> rootDiskTags) {
        Transaction txn = Transaction.currentTxn();


        txn.start();
        SearchCriteria<VMRootDiskTagVO> sc = VmIdSearch.create();
        sc.setParameters("vmId", vmId);
        expunge(sc);


        for (String tag : rootDiskTags) {
            if(tag != null){
                tag = tag.trim();
                if(tag.length() > 0) {
                    VMRootDiskTagVO vo = new VMRootDiskTagVO(vmId, tag);
                    persist(vo);
                }
            }
        }
        txn.commit();
    }

View Full Code Here

                    if (answer != null) {
                        if (!answer.getResult()) {
                            s_logger.warn("Error while collecting network stats from router: " + router.getInstanceName() + " from host: " + router.getHostId() + "; details: " + answer.getDetails());
                            continue;
                        }
                        Transaction txn = Transaction.open(Transaction.CLOUD_DB);
                        try {
                            if ((answer.getBytesReceived() == 0) && (answer.getBytesSent() == 0)) {
                                s_logger.debug("Recieved and Sent bytes are both 0. Not updating user_statistics");
                                continue;
                            }
                            txn.start();
                            UserStatisticsVO stats = _userStatsDao.lock(router.getAccountId(),
                                    router.getDataCenterId(), network.getId(), (forVpc ? routerNic.getIp4Address() : null), router.getId(), routerType);
                            if (stats == null) {
                                s_logger.warn("unable to find stats for account: " + router.getAccountId());
                                continue;
                            }


                            if (previousStats != null
                                    && ((previousStats.getCurrentBytesReceived() != stats.getCurrentBytesReceived())
                                    || (previousStats.getCurrentBytesSent() != stats.getCurrentBytesSent()))){
                                s_logger.debug("Router stats changed from the time NetworkUsageCommand was sent. " +
                                        "Ignoring current answer. Router: " + answer.getRouterName() + " Rcvd: " +
                                        answer.getBytesReceived() + "Sent: " + answer.getBytesSent());
                                continue;
                            }


                            if (stats.getCurrentBytesReceived() > answer.getBytesReceived()) {
                                if (s_logger.isDebugEnabled()) {
                                    s_logger.debug("Received # of bytes that's less than the last one.  " +
                                            "Assuming something went wrong and persisting it. Router: " +
                                            answer.getRouterName() + " Reported: " + answer.getBytesReceived()
                                            + " Stored: " + stats.getCurrentBytesReceived());
                                }
                                stats.setNetBytesReceived(stats.getNetBytesReceived() + stats.getCurrentBytesReceived());
                            }
                            stats.setCurrentBytesReceived(answer.getBytesReceived());
                            if (stats.getCurrentBytesSent() > answer.getBytesSent()) {
                                if (s_logger.isDebugEnabled()) {
                                    s_logger.debug("Received # of bytes that's less than the last one.  " +
                                            "Assuming something went wrong and persisting it. Router: " +
                                            answer.getRouterName() + " Reported: " + answer.getBytesSent()
                                            + " Stored: " + stats.getCurrentBytesSent());
                                }
                                stats.setNetBytesSent(stats.getNetBytesSent() + stats.getCurrentBytesSent());
                            }
                            stats.setCurrentBytesSent(answer.getBytesSent());
                            if (! _dailyOrHourly) {
                                //update agg bytes
                                stats.setAggBytesSent(stats.getNetBytesSent() + stats.getCurrentBytesSent());
                                stats.setAggBytesReceived(stats.getNetBytesReceived() + stats.getCurrentBytesReceived());
                            }
                            _userStatsDao.update(stats.getId(), stats);
                            txn.commit();
                        } catch (Exception e) {
                            txn.rollback();
                            s_logger.warn("Unable to update user statistics for account: " + router.getAccountId()
                                    + " Rx: " + answer.getBytesReceived() + "; Tx: " + answer.getBytesSent());
                        } finally {
                            txn.close();
                        }
                    }
                }
            }
        }

View Full Code Here


    }


    @Override
    public void persist(long vmId, List<Long> networks) {
        Transaction txn = Transaction.currentTxn();


        txn.start();
        SearchCriteria<VMNetworkMapVO> sc = VmIdSearch.create();
        sc.setParameters("vmId", vmId);
        expunge(sc);


        for (Long networkId : networks) {
            VMNetworkMapVO vo = new VMNetworkMapVO(vmId, networkId);
            persist(vo);
        }


        txn.commit();
    }

View Full Code Here

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