nvazquez commented on a change in pull request #3724: URL: https://github.com/apache/cloudstack/pull/3724#discussion_r837374559
########## File path: plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtFreezeThawVMCommandWrapper.java ########## @@ -0,0 +1,104 @@ +// +// 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.Gson; +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(new Gson().toJson(QemuCommand.executeQemuCommand(QemuCommand.AGENT_FREEZE, null)).toString(), 10, 0); Review comment: @slavkap ok, since qemuAgentCommand accepts a string as a first parameter I would be +1 on having a helper class or similar that will retrieve the string in the expected format based on the params, but not a blocker -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
