| // 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; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.inject.Inject; |
| import javax.naming.ConfigurationException; |
| |
| import org.apache.log4j.Logger; |
| |
| import com.cloud.agent.AgentManager; |
| import com.cloud.agent.api.Answer; |
| import com.cloud.agent.api.FenceAnswer; |
| import com.cloud.agent.api.FenceCommand; |
| import com.cloud.exception.AgentUnavailableException; |
| import com.cloud.exception.OperationTimedoutException; |
| import com.cloud.host.Host; |
| import com.cloud.host.HostVO; |
| import com.cloud.host.Status; |
| import com.cloud.host.dao.HostDao; |
| import com.cloud.hypervisor.Hypervisor.HypervisorType; |
| import com.cloud.resource.ResourceManager; |
| import com.cloud.utils.component.AdapterBase; |
| import com.cloud.vm.VirtualMachine; |
| |
| public class XenServerFencer extends AdapterBase implements FenceBuilder { |
| private static final Logger s_logger = Logger.getLogger(XenServerFencer.class); |
| |
| @Inject |
| HostDao _hostDao; |
| @Inject |
| AgentManager _agentMgr; |
| @Inject |
| ResourceManager _resourceMgr; |
| |
| @Override |
| public Boolean fenceOff(VirtualMachine vm, Host host) { |
| if (host.getHypervisorType() != HypervisorType.XenServer) { |
| s_logger.debug("Don't know how to fence non XenServer hosts " + host.getHypervisorType()); |
| return null; |
| } |
| |
| List<HostVO> hosts = _resourceMgr.listAllHostsInCluster(host.getClusterId()); |
| FenceCommand fence = new FenceCommand(vm, host); |
| |
| for (HostVO h : hosts) { |
| if (h.getHypervisorType() == HypervisorType.XenServer) { |
| if (h.getStatus() != Status.Up) { |
| continue; |
| } |
| if (h.getId() == host.getId()) { |
| continue; |
| } |
| FenceAnswer answer; |
| try { |
| Answer ans = _agentMgr.send(h.getId(), fence); |
| if (!(ans instanceof FenceAnswer)) { |
| s_logger.debug("Answer is not fenceanswer. Result = " + ans.getResult() + "; Details = " + ans.getDetails()); |
| continue; |
| } |
| answer = (FenceAnswer)ans; |
| } catch (AgentUnavailableException e) { |
| if (s_logger.isDebugEnabled()) { |
| s_logger.debug("Moving on to the next host because " + h.toString() + " is unavailable", e); |
| } |
| continue; |
| } catch (OperationTimedoutException e) { |
| if (s_logger.isDebugEnabled()) { |
| s_logger.debug("Moving on to the next host because " + h.toString() + " is unavailable", e); |
| } |
| continue; |
| } |
| if (answer != null && answer.getResult()) { |
| return true; |
| } |
| } |
| } |
| |
| if (s_logger.isDebugEnabled()) { |
| s_logger.debug("Unable to fence off " + vm.toString() + " on " + host.toString()); |
| } |
| |
| return false; |
| } |
| |
| public XenServerFencer() { |
| super(); |
| } |
| |
| @Override |
| public boolean configure(String name, Map<String, Object> params) throws ConfigurationException { |
| _name = name; |
| return true; |
| } |
| |
| @Override |
| public String getName() { |
| return _name; |
| } |
| |
| @Override |
| public boolean start() { |
| return true; |
| } |
| |
| @Override |
| public boolean stop() { |
| return true; |
| } |
| |
| } |