Examples of com.cloud.utils.db.Transaction.start()

com.cloud.utils.db.Transaction.start()


        Transaction txn = Transaction.currentTxn();


        Account owner = _accountMgr.getAccount(addr.getAllocatedToAccountId());


        txn.start();
        addr.setState(IpAddress.State.Allocated);
        _ipAddressDao.update(addr.getId(), addr);


        // Save usage event
        if (owner.getAccountId() != Account.ACCOUNT_ID_SYSTEM) {

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        }


        PublicIp ip = null;
        Transaction txn = Transaction.currentTxn();
        try {
            txn.start();


            owner = _accountDao.acquireInLockTable(ownerId);


            if (owner == null) {
                // this ownerId comes from owner or type Account. See the class "AccountVO" and the annotations in that class

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            // Check that the maximum number of public IPs for the given
            // accountId will not be exceeded
            _resourceLimitMgr.checkResourceLimit(accountToLock, ResourceType.public_ip);


            txn.start();


            ip = fetchNewPublicIp(zone.getId(), null, null, ipOwner, vlanType, null, 
                    false, assign, null, isSystem, null);


            if (ip == null) {

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        defaultVPCOffProviders.put(Service.StaticNat, defaultProviders);
        defaultVPCOffProviders.put(Service.PortForwarding, defaultProviders);
        defaultVPCOffProviders.put(Service.Vpn, defaultProviders);


        Transaction txn = Transaction.currentTxn();
        txn.start();
        // diff between offering #1 and #2 - securityGroup is enabled for the first, and disabled for the third


        NetworkOfferingVO offering = null;
        if (_networkOfferingDao.findByUniqueName(NetworkOffering.DefaultSharedNetworkOfferingWithSGService) == null) {
            offering = _configMgr.createNetworkOffering(NetworkOffering.DefaultSharedNetworkOfferingWithSGService, "Offering for Shared Security group enabled networks", TrafficType.Guest, null,

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                if (related == -1) {
                    related = id;
                }


                Transaction txn = Transaction.currentTxn();
                txn.start();


                NetworkVO vo = new NetworkVO(id, network, offering.getId(), guru.getName(), owner.getDomainId(), owner.getId(),
                        related, name, displayText, predefined.getNetworkDomain(), offering.getGuestType(), 
                        plan.getDataCenterId(), plan.getPhysicalNetworkId(), aclType, offering.getSpecifyIpRanges(), vpcId);
                networks.add(_networksDao.persist(vo, vo.getGuestType() == Network.GuestType.Isolated,

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    @Override
    @DB
    public void allocate(VirtualMachineProfile<? extends VMInstanceVO> vm, List<Pair<NetworkVO, NicProfile>> networks) 
            throws InsufficientCapacityException, ConcurrentOperationException {
        Transaction txn = Transaction.currentTxn();
        txn.start();


        int deviceId = 0;


        boolean[] deviceIds = new boolean[networks.size()];
        Arrays.fill(deviceIds, false);

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    }


    @DB
    protected void updateNic(NicVO nic, long networkId, int count) {
        Transaction txn = Transaction.currentTxn();
        txn.start();
        _nicDao.update(nic.getId(), nic);


        if (nic.getVmType() == VirtualMachine.Type.User) {
            s_logger.debug("Changing active number of nics for network id=" + networkId + " on " + count);
            _networksDao.changeActiveNicsBy(networkId, count);

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            }
            throw ex;   
        }


        Transaction txn = Transaction.currentTxn();
        txn.start();


        Long sharedDomainId = null;
        if (isDomainSpecific) {
            if (domainId != null) {
                sharedDomainId = domainId;

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                throw new InvalidParameterValueException("Virtual Guest Cidr " + cidr + " is not RFC1918 compliant");
            }
        }


        Transaction txn = Transaction.currentTxn();
        txn.start();


        Long physicalNetworkId = null;
        if (pNtwk != null) {
            physicalNetworkId = pNtwk.getId();
        }

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        _networksDao.update(network.getId(), network);


        boolean success = shutdownNetworkElementsAndResources(context, cleanupElements, network);


        Transaction txn = Transaction.currentTxn();
        txn.start();
        if (success) {
            if (s_logger.isDebugEnabled()) {
                s_logger.debug("Network id=" + networkId + " is shutdown successfully, cleaning up corresponding resources now.");
            }
            NetworkGuru guru = _networkGurus.get(network.getGuruName());

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