mirror of https://github.com/apache/cloudstack.git
125 lines
4.0 KiB
Java
125 lines
4.0 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 java.util.Map;
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import javax.ejb.Local;
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import javax.naming.ConfigurationException;
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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.FenceAnswer;
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import com.cloud.agent.api.FenceCommand;
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import com.cloud.exception.AgentUnavailableException;
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import com.cloud.exception.OperationTimedoutException;
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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.HypervisorType;
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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=FenceBuilder.class)
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public class XenServerFencer implements FenceBuilder {
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private static final Logger s_logger = Logger.getLogger(XenServerFencer.class);
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String _name;
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@Inject HostDao _hostDao;
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@Inject AgentManager _agentMgr;
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@Override
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public Boolean fenceOff(VMInstanceVO vm, HostVO host) {
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if (host.getHypervisorType() != HypervisorType.XenServer) {
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s_logger.debug("Don't know how to fence non XenServer hosts " + host.getHypervisorType());
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return null;
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}
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List<HostVO> hosts = _hostDao.listByCluster(host.getClusterId());
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FenceCommand fence = new FenceCommand(vm, host);
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for (HostVO h : hosts) {
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if (h.getHypervisorType() == HypervisorType.XenServer) {
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if( h.getStatus() != Status.Up ) {
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continue;
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}
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if( h.getId() == host.getId() ) {
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continue;
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}
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FenceAnswer answer;
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try {
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Answer ans = _agentMgr.send(h.getId(), fence);
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if (!(ans instanceof FenceAnswer)) {
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s_logger.debug("Answer is not fenceanswer. Result = " + ans.getResult() + "; Details = " + ans.getDetails());
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continue;
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}
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answer = (FenceAnswer) ans;
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} catch (AgentUnavailableException e) {
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if (s_logger.isDebugEnabled()) {
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s_logger.debug("Moving on to the next host because " + h.toString() + " is unavailable");
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}
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continue;
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} catch (OperationTimedoutException e) {
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if (s_logger.isDebugEnabled()) {
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s_logger.debug("Moving on to the next host because " + h.toString() + " is unavailable");
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}
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continue;
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}
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if (answer != null && answer.getResult()) {
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return true;
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}
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}
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}
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if (s_logger.isDebugEnabled()) {
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s_logger.debug("Unable to fence off " + vm.toString() + " on " + host.toString());
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}
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return false;
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}
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public XenServerFencer() {
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super();
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}
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@Override
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public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
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_name = name;
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return true;
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}
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@Override
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public String getName() {
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return _name;
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}
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@Override
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public boolean start() {
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return true;
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}
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@Override
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public boolean stop() {
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return true;
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}
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}
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