mirror of https://github.com/apache/cloudstack.git
92 lines
3.1 KiB
Java
92 lines
3.1 KiB
Java
// 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 javax.ejb.Local;
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import javax.inject.Inject;
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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.Host;
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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.AdapterBase;
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import com.cloud.vm.VirtualMachine;
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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
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HostDao _hostDao;
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@Inject
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AgentManager _agentMgr;
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@Inject
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ResourceManager _resourceMgr;
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protected XenServerInvestigator() {
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}
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@Override
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public Status isAgentAlive(Host 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 = _resourceMgr.listAllHostsInCluster(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 && answer.getResult()) {
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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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// even it returns true, that means host is up, but XAPI may not work
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return ans.isAlive() ? null : 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(VirtualMachine vm, Host host) throws UnknownVM {
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Status status = isAgentAlive(host);
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if (status == null) {
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throw new UnknownVM();
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}
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if (status == Status.Up) {
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return true;
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} else {
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throw new UnknownVM();
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}
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}
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}
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