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83 lines
2.9 KiB
Java
83 lines
2.9 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;
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import java.util.List;
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import javax.ejb.Local;
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import org.apache.log4j.Logger;
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import com.cloud.agent.AgentManager;
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import com.cloud.agent.api.Answer;
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import com.cloud.agent.api.CheckOnHostAnswer;
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import com.cloud.agent.api.CheckOnHostCommand;
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import com.cloud.host.HostVO;
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import com.cloud.host.Status;
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import com.cloud.host.dao.HostDao;
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import com.cloud.hypervisor.Hypervisor;
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import com.cloud.hypervisor.Hypervisor.HypervisorType;
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import com.cloud.utils.component.AdapterBase;
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import com.cloud.utils.component.Inject;
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import com.cloud.vm.VMInstanceVO;
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@Local(value=Investigator.class)
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public class XenServerInvestigator extends AdapterBase implements Investigator {
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private final static Logger s_logger = Logger.getLogger(XenServerInvestigator.class);
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@Inject HostDao _hostDao;
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@Inject AgentManager _agentMgr;
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protected XenServerInvestigator() {
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}
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@Override
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public Status isAgentAlive(HostVO agent) {
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if (agent.getHypervisorType() != HypervisorType.XenServer) {
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return null;
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}
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CheckOnHostCommand cmd = new CheckOnHostCommand(agent);
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List<HostVO> neighbors = _hostDao.listByCluster(agent.getClusterId());
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for (HostVO neighbor : neighbors) {
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if (neighbor.getId() == agent.getId() || neighbor.getHypervisorType() != HypervisorType.XenServer) {
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continue;
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}
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Answer answer = _agentMgr.easySend(neighbor.getId(), cmd);
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if (answer != null) {
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CheckOnHostAnswer ans = (CheckOnHostAnswer)answer;
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if (!ans.isDetermined()) {
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s_logger.debug("Host " + neighbor + " couldn't determine the status of " + agent);
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continue;
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}
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return ans.isAlive() ? Status.Up : Status.Down;
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}
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}
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return null;
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}
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@Override
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public Boolean isVmAlive(VMInstanceVO vm, HostVO host) {
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Status status = isAgentAlive(host);
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if (status == null) {
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return null;
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}
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return status == Status.Up ? true : null;
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}
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}
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