Examples of com.cloud.utils.db.TransactionLegacy

com.cloud.utils.db.TransactionLegacy
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.

        }


        @DB
        protected boolean updateJob(Long jobId, String hostname, Integer pid, Date heartbeat, int scheduled) {
            boolean changeOwner = false;
            TransactionLegacy txn = TransactionLegacy.currentTxn();
            try {
                txn.start();


                // take over the job, setting our hostname/pid/heartbeat time
                UsageJobVO job = _usageJobDao.lockRow(jobId, Boolean.TRUE);
                if (!job.getHost().equals(hostname) || !job.getPid().equals(pid)) {
                    changeOwner = true;
                }


                UsageJobVO jobForUpdate = _usageJobDao.createForUpdate();
                if (hostname != null) {
                    jobForUpdate.setHost(hostname);
                }
                if (pid != null) {
                    jobForUpdate.setPid(pid);
                }
                if (heartbeat != null) {
                    jobForUpdate.setHeartbeat(heartbeat);
                }
                jobForUpdate.setScheduled(scheduled);
                _usageJobDao.update(job.getId(), jobForUpdate);


                txn.commit();
            } catch (Exception dbEx) {
                txn.rollback();
                s_logger.error("error updating usage job", dbEx);
            }
            return changeOwner;
        }

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        sbuilder.append(" ORDER by rand() limit 1");
        String sql = sbuilder.toString();
        PreparedStatement pstmt = null;
        ResultSet rs = null;
        HostVO host = null;
        TransactionLegacy txn = TransactionLegacy.currentTxn();


        try {
            pstmt = txn.prepareStatement(sql);
            pstmt.setLong(1, poolId);
            rs = pstmt.executeQuery();
            while (rs.next()) {
                long id = rs.getLong(1);
                host = hostDao.findById(id);

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        String sql = sbuilder.toString();
        PreparedStatement pstmt = null;
        ResultSet rs = null;
        HostVO host = null;
        TransactionLegacy txn = TransactionLegacy.currentTxn();


        try {
            pstmt = txn.prepareStatement(sql);
            rs = pstmt.executeQuery();
            while (rs.next()) {
                long id = rs.getLong(1);
                host = hostDao.findById(id);
            }

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    @Override
    public void deletePrimaryRecordsForStore(long id, DataStoreRole role) {
        SearchCriteria<SnapshotDataStoreVO> sc = storeSearch.create();
        sc.setParameters("store_id", id);
        sc.setParameters("store_role", role);
        TransactionLegacy txn = TransactionLegacy.currentTxn();
        txn.start();
        remove(sc);
        txn.commit();
    }

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    @Override
    public void deleteSnapshotRecordsOnPrimary() {
        SearchCriteria<SnapshotDataStoreVO> sc = storeSearch.create();
        sc.setParameters("store_role", DataStoreRole.Primary);
        TransactionLegacy txn = TransactionLegacy.currentTxn();
        txn.start();
        remove(sc);
        txn.commit();
    }

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        return findOneBy(sc);
    }


    @Override
    public SnapshotDataStoreVO findLatestSnapshotForVolume(Long volumeId, DataStoreRole role) {
        TransactionLegacy txn = TransactionLegacy.currentTxn();
        PreparedStatement pstmt = null;
        ResultSet rs = null;
        try {
            pstmt = txn.prepareStatement(findLatestSnapshot);
            pstmt.setString(1, role.toString());
            pstmt.setLong(2, volumeId);
            rs = pstmt.executeQuery();
            while (rs.next()) {
                long sid = rs.getLong(1);

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    }


    @Override
    @DB
    public SnapshotDataStoreVO findParent(DataStoreRole role, Long storeId, Long volumeId) {
        TransactionLegacy txn = TransactionLegacy.currentTxn();
        PreparedStatement pstmt = null;
        ResultSet rs = null;
        try {
            pstmt = txn.prepareStatement(parentSearch);
            pstmt.setLong(1, storeId);
            pstmt.setString(2, role.toString());
            pstmt.setLong(3, volumeId);
            rs = pstmt.executeQuery();
            while (rs.next()) {

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        storeSearch.done();
    }


    @Override
    public void update(long storeId, Map<String, String> details) {
        TransactionLegacy txn = TransactionLegacy.currentTxn();
        SearchCriteria<ImageStoreDetailVO> sc = storeSearch.create();
        sc.setParameters("store", storeId);


        txn.start();
        expunge(sc);
        for (Map.Entry<String, String> entry : details.entrySet()) {
            ImageStoreDetailVO detail = new ImageStoreDetailVO(storeId, entry.getKey(), entry.getValue());
            persist(detail);
        }
        txn.commit();
    }

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    @Override
    public void deletePrimaryRecordsForStore(long id) {
        SearchCriteria<VolumeDataStoreVO> sc = storeSearch.create();
        sc.setParameters("store_id", id);
        TransactionLegacy txn = TransactionLegacy.currentTxn();
        txn.start();
        remove(sc);
        txn.commit();
    }

View Full Code Here

    }


    @Test
    @DB
    public void createInvalidlyHostedPrivateNetwork() {
        TransactionLegacy __txn;
        __txn = TransactionLegacy.open("createInvalidlyHostedPrivateNetworkTest");
        /* Network nw; */
        try {
            /* nw = */
            networkService.createPrivateNetwork("bla", "fake", 1L, "vlan:1", "10.1.1.2", null, "10.1.1.1", "255.255.255.0", 1L, 1L, true, 1L);
            /* nw = */
            networkService.createPrivateNetwork("bla", "fake", 1L, "lswitch:3", "10.1.1.2", null, "10.1.1.1", "255.255.255.0", 1L, 1L, false, 1L);
            boolean invalid = false;
            boolean unsupported = false;
            try {
                /* nw = */
                networkService.createPrivateNetwork("bla", "fake", 1, "bla:2", "10.1.1.2", null, "10.1.1.1", "255.255.255.0", 1, 1L, true, 1L);
            } catch (CloudRuntimeException e) {
                Assert.assertEquals("unexpected parameter exception", "string 'bla:2' has an unknown BroadcastDomainType.", e.getMessage());
                invalid = true;
            }
            try {
                /* nw = */
                networkService.createPrivateNetwork("bla", "fake", 1, "mido://4", "10.1.1.2", null, "10.1.1.1", "255.255.255.0", 1, 1L, false, 1L);
            } catch (InvalidParameterValueException e) {
                Assert.assertEquals("unexpected parameter exception", "unsupported type of broadcastUri specified: mido://4", e.getMessage());
                unsupported = true;
            }
            Assert.assertEquals("'bla' should not be accepted as scheme", true, invalid);
            Assert.assertEquals("'mido' should not yet be supported as scheme", true, unsupported);
        } catch (ResourceAllocationException e) {
            s_logger.error("no resources", e);
            fail("no resources");
        } catch (ConcurrentOperationException e) {
            s_logger.error("another one is in the way", e);
            fail("another one is in the way");
        } catch (InsufficientCapacityException e) {
            s_logger.error("no capacity", e);
            fail("no capacity");
        } finally {
            __txn.close("createInvalidlyHostedPrivateNetworkTest");
        }
    }

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