| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| package com.cloud.ha.dao; |
| |
| import java.util.List; |
| |
| import com.cloud.ha.HaWorkVO; |
| import com.cloud.ha.HighAvailabilityManager.WorkType; |
| import com.cloud.utils.db.GenericDao; |
| |
| public interface HighAvailabilityDao extends GenericDao<HaWorkVO, Long> { |
| |
| /** |
| * Takes an available HA work item. |
| * |
| * @param serverId server that is taking this. |
| * @return WorkVO if there's one to work on; null if none. |
| */ |
| HaWorkVO take(long serverId); |
| |
| /** |
| * Finds all the work items related to this instance. |
| * |
| * @param instanceId |
| * @return list of WorkVO or empty list. |
| */ |
| List<HaWorkVO> findPreviousHA(long instanceId); |
| |
| boolean delete(long instanceId, WorkType type); |
| |
| /** |
| * Finds all the work items that were successful and is now ready to be purged. |
| * |
| * @param time that the work item must be successful before. |
| * @return list of WorkVO or empty list. |
| */ |
| void cleanup(long time); |
| |
| void deleteMigrationWorkItems(final long hostId, final WorkType type, final long serverId); |
| |
| List<HaWorkVO> findTakenWorkItems(WorkType type); |
| |
| /** |
| * finds out if a work item has been scheduled for this work type but has not been taken yet. |
| * |
| * @param instanceId vm instance id |
| * @param type type of work scheduled for it. |
| * @return true if it has been scheduled and false if it hasn't. |
| */ |
| boolean hasBeenScheduled(long instanceId, WorkType type); |
| |
| int releaseWorkItems(long nodeId); |
| |
| /** |
| * Look for HA work that has been scheduled for a vm since a certain work id. |
| * |
| * @param vmId virtual machine id. |
| * @param workId work item id. |
| * @return List of work items. |
| */ |
| List<HaWorkVO> listFutureHaWorkForVm(long vmId, long workId); |
| |
| /** |
| * Look for HA work that is being run right now for a VM. |
| * |
| * @param vmId virtual machine id |
| * @return List of work items |
| */ |
| List<HaWorkVO> listRunningHaWorkForVm(long vmId); |
| |
| List<HaWorkVO> listPendingHaWorkForVm(long vmId); |
| } |