mirror of https://github.com/apache/cloudstack.git
123 lines
3.4 KiB
Java
Executable File
123 lines
3.4 KiB
Java
Executable File
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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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.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.resource.ResourceManager;
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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 KVMFencer implements FenceBuilder {
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private static final Logger s_logger = Logger.getLogger(KVMFencer.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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@Inject ResourceManager _resourceMgr;
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@Override
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public boolean configure(String name, Map<String, Object> params)
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throws ConfigurationException {
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// TODO Auto-generated method stub
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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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// TODO Auto-generated method stub
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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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// TODO Auto-generated method stub
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return true;
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}
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public KVMFencer() {
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super();
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}
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@Override
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public Boolean fenceOff(VMInstanceVO vm, HostVO host) {
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if (host.getHypervisorType() != HypervisorType.KVM) {
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s_logger.debug("Don't know how to fence non kvm hosts " + host.getHypervisorType());
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return null;
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}
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List<HostVO> hosts = _resourceMgr.listAllHostsInCluster(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.KVM) {
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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 = (FenceAnswer)_agentMgr.send(h.getId(), fence);
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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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}
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