Examples with SnapshotAndCopyCommand org.apache.cloudstack.storage.command.SnapshotAndCopyCommand used on opensource projects

Example 1 with SnapshotAndCopyCommand

use of org.apache.cloudstack.storage.command.SnapshotAndCopyCommand in project cloudstack by apache.

the class StorageSystemSnapshotStrategy method performSnapshotAndCopyOnHostSide.

private void performSnapshotAndCopyOnHostSide(VolumeInfo volumeInfo, SnapshotInfo snapshotInfo) {
    Map<String, String> sourceDetails = null;
    VolumeVO volumeVO = volumeDao.findById(volumeInfo.getId());
    Long vmInstanceId = volumeVO.getInstanceId();
    VMInstanceVO vmInstanceVO = vmInstanceDao.findById(vmInstanceId);
    Long hostId = null;
    // if the volume to snapshot is associated with a VM
    if (vmInstanceVO != null) {
        hostId = vmInstanceVO.getHostId();
        // if the VM is not associated with a host
        if (hostId == null) {
            hostId = vmInstanceVO.getLastHostId();
            if (hostId == null) {
                sourceDetails = getSourceDetails(volumeInfo);
            }
        }
    } else // volume to snapshot is not associated with a VM (could be a data disk in the detached state)
    {
        sourceDetails = getSourceDetails(volumeInfo);
    }
    HostVO hostVO = null;
    if (hostId != null) {
        hostVO = hostDao.findById(hostId);
    }
    if (hostVO == null || !ResourceState.Enabled.equals(hostVO.getResourceState())) {
        Optional<HostVO> optHostVO = getHost(volumeInfo.getDataCenterId(), false);
        if (optHostVO.isPresent()) {
            hostVO = optHostVO.get();
        }
    }
    if (hostVO == null) {
        final String errMsg = "Unable to locate an applicable host";
        s_logger.error("performSnapshotAndCopyOnHostSide: " + errMsg);
        throw new CloudRuntimeException(errMsg);
    }
    long storagePoolId = volumeVO.getPoolId();
    StoragePoolVO storagePoolVO = storagePoolDao.findById(storagePoolId);
    DataStore dataStore = dataStoreMgr.getDataStore(storagePoolId, DataStoreRole.Primary);
    Map<String, String> destDetails = getDestDetails(storagePoolVO, snapshotInfo);
    SnapshotAndCopyCommand snapshotAndCopyCommand = new SnapshotAndCopyCommand(volumeInfo.getPath(), sourceDetails, destDetails);
    SnapshotAndCopyAnswer snapshotAndCopyAnswer;
    try {
        // if sourceDetails != null, we need to connect the host(s) to the volume
        if (sourceDetails != null) {
            volService.grantAccess(volumeInfo, hostVO, dataStore);
        }
        volService.grantAccess(snapshotInfo, hostVO, dataStore);
        snapshotAndCopyAnswer = (SnapshotAndCopyAnswer) agentMgr.send(hostVO.getId(), snapshotAndCopyCommand);
    } catch (Exception ex) {
        throw new CloudRuntimeException(ex.getMessage());
    } finally {
        try {
            volService.revokeAccess(snapshotInfo, hostVO, dataStore);
            // if sourceDetails != null, we need to disconnect the host(s) from the volume
            if (sourceDetails != null) {
                volService.revokeAccess(volumeInfo, hostVO, dataStore);
            }
        } catch (Exception ex) {
            s_logger.debug(ex.getMessage(), ex);
        }
    }
    if (snapshotAndCopyAnswer == null || !snapshotAndCopyAnswer.getResult()) {
        final String errMsg;
        if (snapshotAndCopyAnswer != null && snapshotAndCopyAnswer.getDetails() != null && !snapshotAndCopyAnswer.getDetails().isEmpty()) {
            errMsg = snapshotAndCopyAnswer.getDetails();
        } else {
            errMsg = "Unable to perform host-side operation";
        }
        throw new CloudRuntimeException(errMsg);
    }
    // for XenServer, this is the VDI's UUID
    String path = snapshotAndCopyAnswer.getPath();
    SnapshotDetailsVO snapshotDetail = new SnapshotDetailsVO(snapshotInfo.getId(), DiskTO.PATH, path, false);
    snapshotDetailsDao.persist(snapshotDetail);
}