| // |
| // 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 java.util.List; |
| |
| import org.apache.cloudstack.storage.to.VolumeObjectTO; |
| import org.apache.log4j.Logger; |
| import org.libvirt.Connect; |
| import org.libvirt.Domain; |
| import org.libvirt.DomainSnapshot; |
| import org.libvirt.LibvirtException; |
| |
| import com.cloud.agent.api.Answer; |
| import com.cloud.agent.api.RevertToVMSnapshotAnswer; |
| import com.cloud.agent.api.RevertToVMSnapshotCommand; |
| import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource; |
| import com.cloud.resource.CommandWrapper; |
| import com.cloud.resource.ResourceWrapper; |
| import com.cloud.vm.VirtualMachine; |
| import com.cloud.vm.snapshot.VMSnapshot; |
| |
| @ResourceWrapper(handles = RevertToVMSnapshotCommand.class) |
| public final class LibvirtRevertToVMSnapshotCommandWrapper extends CommandWrapper<RevertToVMSnapshotCommand, Answer, LibvirtComputingResource> { |
| |
| private static final Logger s_logger = Logger.getLogger(LibvirtRevertToVMSnapshotCommandWrapper.class); |
| |
| @Override |
| public Answer execute(final RevertToVMSnapshotCommand cmd, final LibvirtComputingResource libvirtComputingResource) { |
| String vmName = cmd.getVmName(); |
| List<VolumeObjectTO> listVolumeTo = cmd.getVolumeTOs(); |
| VMSnapshot.Type vmSnapshotType = cmd.getTarget().getType(); |
| Boolean snapshotMemory = vmSnapshotType == VMSnapshot.Type.DiskAndMemory; |
| VirtualMachine.PowerState vmState = null; |
| |
| Domain dm = null; |
| try { |
| final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper(); |
| Connect conn = libvirtUtilitiesHelper.getConnection(); |
| dm = libvirtComputingResource.getDomain(conn, vmName); |
| |
| if (dm == null) { |
| return new RevertToVMSnapshotAnswer(cmd, false, |
| "Revert to VM Snapshot Failed due to can not find vm: " + vmName); |
| } |
| |
| DomainSnapshot snapshot = dm.snapshotLookupByName(cmd.getTarget().getSnapshotName()); |
| if (snapshot == null) |
| return new RevertToVMSnapshotAnswer(cmd, false, "Cannot find vmSnapshot with name: " + cmd.getTarget().getSnapshotName()); |
| |
| dm.revertToSnapshot(snapshot); |
| snapshot.free(); |
| |
| if (!snapshotMemory) { |
| dm.destroy(); |
| if (dm.isPersistent() == 1) |
| dm.undefine(); |
| vmState = VirtualMachine.PowerState.PowerOff; |
| } else { |
| vmState = VirtualMachine.PowerState.PowerOn; |
| } |
| |
| return new RevertToVMSnapshotAnswer(cmd, listVolumeTo, vmState); |
| } catch (LibvirtException e) { |
| String msg = " Revert to VM snapshot failed due to " + e.toString(); |
| s_logger.warn(msg, e); |
| return new RevertToVMSnapshotAnswer(cmd, false, msg); |
| } finally { |
| if (dm != null) { |
| try { |
| dm.free(); |
| } catch (LibvirtException l) { |
| s_logger.trace("Ignoring libvirt error.", l); |
| }; |
| } |
| } |
| } |
| } |