TestSnapshotOnKvm7.java

package org.zstack.test.storage.snapshot;

import junit.framework.Assert;
import org.junit.Before;
import org.junit.Test;
import org.springframework.transaction.annotation.Transactional;
import org.zstack.core.cloudbus.CloudBus;
import org.zstack.core.componentloader.ComponentLoader;
import org.zstack.core.db.DatabaseFacade;
import org.zstack.header.identity.SessionInventory;
import org.zstack.header.storage.snapshot.*;
import org.zstack.header.vm.VmInstanceInventory;
import org.zstack.header.volume.VolumeVO;
import org.zstack.simulator.kvm.KVMSimulatorConfig;
import org.zstack.simulator.kvm.VolumeSnapshotKvmSimulator;
import org.zstack.test.Api;
import org.zstack.test.ApiSenderException;
import org.zstack.test.DBUtil;
import org.zstack.test.WebBeanConstructor;
import org.zstack.test.deployer.Deployer;
import org.zstack.utils.Utils;
import org.zstack.utils.logging.CLogger;

import javax.persistence.TypedQuery;

/*
* 1. create two snapshots
* 2. set create snapshot to failure
* 3. create another snapshot
*
* confirm failure didn't mess up existing snapshot
*/
public class TestSnapshotOnKvm7 {
    CLogger logger = Utils.getLogger(TestSnapshotOnKvm7.class);
    Deployer deployer;
    Api api;
    ComponentLoader loader;
    CloudBus bus;
    DatabaseFacade dbf;
    SessionInventory session;
    KVMSimulatorConfig config;
    VolumeSnapshotKvmSimulator snapshotKvmSimulator;

    @Before
    public void setUp() throws Exception {
        DBUtil.reDeployDB();
        WebBeanConstructor con = new WebBeanConstructor();
        deployer = new Deployer("deployerXml/kvm/TestCreateVmOnKvm.xml", con);
        deployer.addSpringConfig("KVMRelated.xml");
        deployer.build();
        api = deployer.getApi();
        loader = deployer.getComponentLoader();
        bus = loader.getComponent(CloudBus.class);
        dbf = loader.getComponent(DatabaseFacade.class);
        config = loader.getComponent(KVMSimulatorConfig.class);
        snapshotKvmSimulator = loader.getComponent(VolumeSnapshotKvmSimulator.class);
        session = api.loginAsAdmin();
    }

    private void fullSnapshot(VolumeSnapshotInventory inv, int distance) {
        Assert.assertEquals(VolumeSnapshotState.Enabled.toString(), inv.getState());
        Assert.assertEquals(VolumeSnapshotStatus.Ready.toString(), inv.getStatus());
        VolumeVO vol = dbf.findByUuid(inv.getVolumeUuid(), VolumeVO.class);
        VolumeSnapshotVO svo = dbf.findByUuid(inv.getUuid(), VolumeSnapshotVO.class);
        Assert.assertNotNull(svo);
        Assert.assertFalse(svo.isFullSnapshot());
        Assert.assertTrue(svo.isLatest());
        Assert.assertNull(svo.getParentUuid());
        Assert.assertEquals(distance, svo.getDistance());
        Assert.assertEquals(vol.getPrimaryStorageUuid(), svo.getPrimaryStorageUuid());
        Assert.assertNotNull(svo.getPrimaryStorageInstallPath());
        VolumeSnapshotTreeVO cvo = dbf.findByUuid(svo.getTreeUuid(), VolumeSnapshotTreeVO.class);
        Assert.assertNotNull(cvo);
        Assert.assertTrue(cvo.isCurrent());
    }

    private void deltaSnapshot(VolumeSnapshotInventory inv, int distance) {
        Assert.assertEquals(VolumeSnapshotState.Enabled.toString(), inv.getState());
        Assert.assertEquals(VolumeSnapshotStatus.Ready.toString(), inv.getStatus());
        VolumeVO vol = dbf.findByUuid(inv.getVolumeUuid(), VolumeVO.class);
        VolumeSnapshotVO svo = dbf.findByUuid(inv.getUuid(), VolumeSnapshotVO.class);
        Assert.assertNotNull(svo);
        Assert.assertFalse(svo.isFullSnapshot());
        Assert.assertTrue(svo.isLatest());
        Assert.assertNotNull(svo.getParentUuid());
        Assert.assertEquals(distance, svo.getDistance());
        Assert.assertEquals(vol.getPrimaryStorageUuid(), svo.getPrimaryStorageUuid());
        Assert.assertNotNull(svo.getPrimaryStorageInstallPath());
        VolumeSnapshotTreeVO cvo = dbf.findByUuid(svo.getTreeUuid(), VolumeSnapshotTreeVO.class);
        Assert.assertNotNull(cvo);
        Assert.assertTrue(cvo.isCurrent());
        Assert.assertEquals(svo.getTreeUuid(), cvo.getUuid());
    }

    @Test(expected = ApiSenderException.class)
    public void test() throws ApiSenderException {
        VmInstanceInventory vm = deployer.vms.get("TestVm");
        String volUuid = vm.getRootVolumeUuid();
        VolumeSnapshotInventory inv = api.createSnapshot(volUuid);
        VolumeSnapshotInventory root = inv;
        fullSnapshot(inv, 0);

        inv = api.createSnapshot(volUuid);
        deltaSnapshot(inv, 1);

        inv = api.createSnapshot(volUuid);
        deltaSnapshot(inv, 2);

        VolumeVO vol = dbf.findByUuid(inv.getVolumeUuid(), VolumeVO.class);
        String volPath = vol.getInstallPath();
        try {
            config.snapshotSuccess = false;
            api.createSnapshot(volUuid);
        } catch (ApiSenderException e) {
            assertNoGarbage();

            VolumeSnapshotVO vo = dbf.findByUuid(inv.getUuid(), VolumeSnapshotVO.class);
            Assert.assertTrue(vo.isLatest());
            vol = dbf.findByUuid(inv.getVolumeUuid(), VolumeVO.class);
            Assert.assertEquals(volPath, vol.getInstallPath());
            snapshotKvmSimulator.validate(root);
            throw e;
        }
    }

    @Transactional(readOnly = true)
    public void assertNoGarbage() {
        String sql = "select count(*)" +
                " from AccountResourceRefVO" +
                " where resourceType = 'VolumeSnapshotVO'" +
                " and resourceUuid not in (select uuid from VolumeSnapshotVO)";
        TypedQuery<Long> q = dbf.getEntityManager().createQuery(sql, Long.class);
        Assert.assertTrue(q.getSingleResult() == 0);
    }

}