| // |
| // 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 java.util.Map; |
| |
| import org.apache.cloudstack.storage.to.VolumeObjectTO; |
| import org.apache.log4j.Logger; |
| import org.libvirt.Connect; |
| import org.libvirt.Domain; |
| import org.libvirt.LibvirtException; |
| |
| import com.cloud.agent.api.Answer; |
| import com.cloud.agent.api.RestoreVMSnapshotAnswer; |
| import com.cloud.agent.api.RestoreVMSnapshotCommand; |
| import com.cloud.agent.api.VMSnapshotTO; |
| import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource; |
| import com.cloud.resource.CommandWrapper; |
| import com.cloud.resource.ResourceWrapper; |
| import com.cloud.vm.VirtualMachine; |
| |
| @ResourceWrapper(handles = RestoreVMSnapshotCommand.class) |
| public final class LibvirtRestoreVMSnapshotCommandWrapper extends CommandWrapper<RestoreVMSnapshotCommand, Answer, LibvirtComputingResource> { |
| |
| private static final Logger s_logger = Logger.getLogger(LibvirtRestoreVMSnapshotCommandWrapper.class); |
| |
| @Override |
| public Answer execute(final RestoreVMSnapshotCommand cmd, final LibvirtComputingResource libvirtComputingResource) { |
| String vmName = cmd.getVmName(); |
| List<VolumeObjectTO> listVolumeTo = cmd.getVolumeTOs(); |
| VirtualMachine.PowerState vmState = VirtualMachine.PowerState.PowerOn; |
| |
| Domain dm = null; |
| try { |
| final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper(); |
| Connect conn = libvirtUtilitiesHelper.getConnection(); |
| dm = libvirtComputingResource.getDomain(conn, vmName); |
| |
| if (dm == null) { |
| return new RestoreVMSnapshotAnswer(cmd, false, |
| "Restore VM Snapshot Failed due to can not find vm: " + vmName); |
| } |
| String xmlDesc = dm.getXMLDesc(0); |
| |
| List<VMSnapshotTO> snapshots = cmd.getSnapshots(); |
| Map<Long, VMSnapshotTO> snapshotAndParents = cmd.getSnapshotAndParents(); |
| for (VMSnapshotTO snapshot: snapshots) { |
| VMSnapshotTO parent = snapshotAndParents.get(snapshot.getId()); |
| String vmSnapshotXML = libvirtUtilitiesHelper.generateVMSnapshotXML(snapshot, parent, xmlDesc); |
| s_logger.debug("Restoring vm snapshot " + snapshot.getSnapshotName() + " on " + vmName + " with XML:\n " + vmSnapshotXML); |
| try { |
| int flags = 1; // VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE = 1 |
| if (snapshot.getCurrent()) { |
| flags += 2; // VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT = 2 |
| } |
| dm.snapshotCreateXML(vmSnapshotXML, flags); |
| } catch (LibvirtException e) { |
| s_logger.debug("Failed to restore vm snapshot " + snapshot.getSnapshotName() + " on " + vmName); |
| return new RestoreVMSnapshotAnswer(cmd, false, e.toString()); |
| } |
| } |
| |
| return new RestoreVMSnapshotAnswer(cmd, listVolumeTo, vmState); |
| } catch (LibvirtException e) { |
| String msg = " Restore snapshot failed due to " + e.toString(); |
| s_logger.warn(msg, e); |
| return new RestoreVMSnapshotAnswer(cmd, false, msg); |
| } finally { |
| if (dm != null) { |
| try { |
| dm.free(); |
| } catch (LibvirtException l) { |
| s_logger.trace("Ignoring libvirt error.", l); |
| }; |
| } |
| } |
| } |
| } |