| // |
| // 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.hypervisor.kvm.resource.wrapper; |
| |
| import org.apache.cloudstack.utils.qemu.QemuCommand; |
| import org.apache.log4j.Logger; |
| import org.libvirt.Connect; |
| import org.libvirt.Domain; |
| import org.libvirt.DomainInfo.DomainState; |
| import org.libvirt.LibvirtException; |
| |
| import com.cloud.agent.api.Answer; |
| import com.cloud.agent.api.FreezeThawVMAnswer; |
| import com.cloud.agent.api.FreezeThawVMCommand; |
| import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource; |
| import com.cloud.resource.CommandWrapper; |
| import com.cloud.resource.ResourceWrapper; |
| import com.google.gson.JsonParser; |
| |
| @ResourceWrapper(handles = FreezeThawVMCommand.class) |
| public class LibvirtFreezeThawVMCommandWrapper extends CommandWrapper<FreezeThawVMCommand, Answer, LibvirtComputingResource> { |
| |
| private static final Logger s_logger = Logger.getLogger(LibvirtFreezeThawVMCommandWrapper.class); |
| |
| @Override |
| public Answer execute(FreezeThawVMCommand command, LibvirtComputingResource serverResource) { |
| String vmName = command.getVmName(); |
| Domain domain = null; |
| |
| try { |
| final LibvirtUtilitiesHelper libvirtUtilitiesHelper = serverResource.getLibvirtUtilitiesHelper(); |
| Connect connect = libvirtUtilitiesHelper.getConnection(); |
| domain = serverResource.getDomain(connect, vmName); |
| if (domain == null) { |
| return new FreezeThawVMAnswer(command, false, String.format("Failed to %s due to %s was not found", |
| command.getOption(), vmName)); |
| } |
| DomainState domainState = domain.getInfo().state ; |
| if (domainState != DomainState.VIR_DOMAIN_RUNNING) { |
| return new FreezeThawVMAnswer(command, false, |
| String.format("%s of VM failed due to vm %s is in %s state", command.getOption(), |
| vmName, domainState)); |
| } |
| |
| String result = getResultOfQemuCommand(command.getOption(), domain); |
| s_logger.debug(String.format("Result of %s command is %s", command.getOption(), result)); |
| if (result == null || (result.startsWith("error"))) { |
| return new FreezeThawVMAnswer(command, false, String.format("Failed to %s vm %s due to result status is: %s", |
| command.getOption(), vmName, result)); |
| } |
| String status = getResultOfQemuCommand(FreezeThawVMCommand.STATUS, domain); |
| s_logger.debug(String.format("Status of %s command is %s", command.getOption(), status)); |
| if (status != null && new JsonParser().parse(status).isJsonObject()) { |
| String statusResult = new JsonParser().parse(status).getAsJsonObject().get("return").getAsString(); |
| if (statusResult.equals(command.getOption())) { |
| return new FreezeThawVMAnswer(command, true, String.format("%s of VM - %s is successful", command.getOption(), vmName)); |
| } |
| } |
| return new FreezeThawVMAnswer(command, false, String.format("Failed to %s vm %s due to result status is: %s", |
| command.getOption(), vmName, status)); |
| } catch (LibvirtException libvirtException) { |
| return new FreezeThawVMAnswer(command, false, String.format("Failed to %s VM - %s due to %s", |
| command.getOption(), vmName, libvirtException.getMessage())); |
| } finally { |
| if (domain != null) { |
| try { |
| domain.free(); |
| } catch (LibvirtException e) { |
| s_logger.trace("Ingore error ", e); |
| } |
| } |
| } |
| } |
| |
| private String getResultOfQemuCommand(String cmd, Domain domain) throws LibvirtException { |
| String result = null; |
| if (cmd.equals(FreezeThawVMCommand.FREEZE)) { |
| result = domain.qemuAgentCommand(QemuCommand.buildQemuCommand(QemuCommand.AGENT_FREEZE, null), 10, 0); |
| } else if (cmd.equals(FreezeThawVMCommand.THAW)) { |
| result = domain.qemuAgentCommand(QemuCommand.buildQemuCommand(QemuCommand.AGENT_THAW, null), 10, 0); |
| } else if (cmd.equals(FreezeThawVMCommand.STATUS)) { |
| result = domain.qemuAgentCommand(QemuCommand.buildQemuCommand(QemuCommand.AGENT_FREEZE_STATUS, null), 10, 0); |
| } |
| return result; |
| } |
| } |