mirror of https://github.com/apache/cloudstack.git
86 lines
2.7 KiB
Java
86 lines
2.7 KiB
Java
/**
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* Copyright (C) 2010 Cloud.com, Inc. All rights reserved.
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*
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* This software is licensed under the GNU General Public License v3 or later.
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*
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* It is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package com.cloud.ha.dao;
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import java.util.List;
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import com.cloud.ha.HaWorkVO;
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import com.cloud.ha.HighAvailabilityManager.WorkType;
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import com.cloud.utils.db.GenericDao;
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public interface HighAvailabilityDao extends GenericDao<HaWorkVO, Long> {
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/**
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* Takes an available HA work item.
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*
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* @param serverId server that is taking this.
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* @return WorkVO if there's one to work on; null if none.
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*/
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HaWorkVO take(long serverId);
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/**
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* Finds all the work items related to this instance.
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*
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* @param instanceId
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* @return list of WorkVO or empty list.
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*/
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List<HaWorkVO> findPreviousHA(long instanceId);
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boolean delete(long instanceId, WorkType type);
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/**
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* Finds all the work items that were successful and is now ready to be purged.
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*
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* @param time that the work item must be successful before.
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* @return list of WorkVO or empty list.
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*/
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void cleanup(long time);
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void deleteMigrationWorkItems(final long hostId, final WorkType type, final long serverId);
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List<HaWorkVO> findTakenWorkItems(WorkType type);
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/**
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* finds out if a work item has been scheduled for this work type but has not been taken yet.
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*
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* @param instanceId vm instance id
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* @param type type of work scheduled for it.
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* @return true if it has been scheduled and false if it hasn't.
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*/
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boolean hasBeenScheduled(long instanceId, WorkType type);
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int releaseWorkItems(long nodeId);
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/**
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* Look for HA work that has been scheduled for a vm since a certain work id.
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*
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* @param vmId virtual machine id.
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* @param workId work item id.
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* @return List of work items.
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*/
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List<HaWorkVO> listFutureHaWorkForVm(long vmId, long workId);
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/**
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* Look for HA work that is being run right now for a VM.
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*
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* @param vmId virtual machine id
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* @return List of work items
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*/
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List<HaWorkVO> listRunningHaWorkForVm(long vmId);
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}
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