| /* |
| * |
| * Licensed 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; |
| |
| import com.cloud.resource.AgentStatusUpdater; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.LogManager; |
| import org.libvirt.Domain; |
| import org.libvirt.LibvirtException; |
| import org.libvirt.event.DomainEvent; |
| import org.libvirt.event.DomainEventDetail; |
| import org.libvirt.event.LifecycleListener; |
| import org.libvirt.event.StoppedDetail; |
| |
| public class LibvirtDomainListener implements LifecycleListener { |
| private static final Logger LOGGER = LogManager.getLogger(LibvirtDomainListener.class); |
| |
| private final AgentStatusUpdater agentStatusUpdater; |
| |
| public LibvirtDomainListener(AgentStatusUpdater updater) { |
| agentStatusUpdater = updater; |
| } |
| |
| public int onLifecycleChange(Domain domain, DomainEvent domainEvent) { |
| try { |
| LOGGER.debug(String.format("Got event lifecycle change on Domain %s, event %s", domain.getName(), domainEvent)); |
| if (domainEvent != null) { |
| switch (domainEvent.getType()) { |
| case STOPPED: |
| /* libvirt-destroyed VMs have detail StoppedDetail.DESTROYED, self shutdown guests are StoppedDetail.SHUTDOWN |
| * Checking for this helps us differentiate between events where cloudstack or admin stopped the VM vs guest |
| * initiated, and avoid pushing extra updates for actions we are initiating without a need for extra tracking */ |
| DomainEventDetail detail = domainEvent.getDetail(); |
| if (StoppedDetail.SHUTDOWN.equals(detail) || StoppedDetail.CRASHED.equals(detail) || StoppedDetail.FAILED.equals(detail)) { |
| if (agentStatusUpdater != null) { |
| LOGGER.info("Triggering out of band status update due to completed self-shutdown or crash of VM"); |
| agentStatusUpdater.triggerUpdate(); |
| } |
| } else { |
| LOGGER.debug("Event detail: " + detail); |
| } |
| break; |
| default: |
| LOGGER.debug(String.format("No handling for event %s", domainEvent)); |
| } |
| } |
| } catch (LibvirtException e) { |
| LOGGER.error("Libvirt exception while processing lifecycle event", e); |
| } catch (Throwable e) { |
| LOGGER.error("Error during lifecycle", e); |
| } |
| return 0; |
| } |
| } |