/**
 *  Copyright (C) 2010 Cloud.com, Inc.  All rights reserved.
 *
 * This software is licensed under the GNU General Public License v3 or later.
 *
 * It is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package com.cloud.host.dao;

import java.util.Date;
import java.util.List;

import com.cloud.host.Host;
import com.cloud.host.Host.Type;
import com.cloud.host.HostVO;
import com.cloud.host.Status;
import com.cloud.host.Status.Event;
import com.cloud.hypervisor.Hypervisor.HypervisorType;
import com.cloud.info.RunningHostCountInfo;
import com.cloud.resource.ResourceState;
import com.cloud.utils.db.GenericDao;
import com.cloud.utils.fsm.StateDao;

/**
 * Data Access Object for server
 *
 */
public interface HostDao extends GenericDao<HostVO, Long>, StateDao<Status, Status.Event, Host> {
    long countBy(long clusterId,  ResourceState... states);

    /**
     * Mark all hosts associated with a certain management server
     * as disconnected.
     * 
     * @param msId management server id.
     */
    void markHostsAsDisconnected(long msId, long lastPing);

	List<HostVO> findLostHosts(long timeout);

    List<HostVO> findAndUpdateDirectAgentToLoad(long lastPingSecondsAfter, Long limit, long managementServerId);

    List<RunningHostCountInfo> getRunningHostCounts(Date cutTime);

    long getNextSequence(long hostId);

    void loadDetails(HostVO host);

    void saveDetails(HostVO host);

    void loadHostTags(HostVO host);

    List<HostVO> listByHostTag(Host.Type type, Long clusterId, Long podId, long dcId, String hostTag);

    long countRoutingHostsByDataCenter(long dcId);

	List<HostVO> findAndUpdateApplianceToLoad(long lastPingSecondsAfter, long managementServerId);

    boolean updateResourceState(ResourceState oldState, ResourceState.Event event, ResourceState newState, Host vo);

	HostVO findByGuid(String guid);
	
	HostVO findByTypeNameAndZoneId(long zoneId, String name, Host.Type type);
}