| // 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.vm; |
| |
| import java.lang.reflect.Method; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.inject.Inject; |
| |
| |
| import org.apache.cloudstack.context.CallContext; |
| import org.apache.cloudstack.framework.jobs.AsyncJob; |
| import org.apache.cloudstack.framework.jobs.AsyncJobDispatcher; |
| import org.apache.cloudstack.framework.jobs.AsyncJobManager; |
| import org.apache.cloudstack.framework.jobs.dao.AsyncJobJoinMapDao; |
| import org.apache.cloudstack.framework.jobs.dao.VmWorkJobDao; |
| import org.apache.cloudstack.framework.jobs.impl.AsyncJobJoinMapVO; |
| import org.apache.cloudstack.framework.jobs.impl.VmWorkJobVO; |
| |
| import com.cloud.user.AccountVO; |
| import com.cloud.user.dao.AccountDao; |
| import com.cloud.utils.component.AdapterBase; |
| import com.cloud.vm.dao.VMInstanceDao; |
| |
| /** |
| * Please note: VmWorkJobWakeupDispatcher is not currently in use. It is designed for event-driven based |
| * job processing model. |
| * |
| * Current code base uses blocking calls to wait for job completion |
| */ |
| public class VmWorkJobWakeupDispatcher extends AdapterBase implements AsyncJobDispatcher { |
| |
| @Inject |
| private VmWorkJobDao _workjobDao; |
| @Inject |
| private AsyncJobJoinMapDao _joinMapDao; |
| @Inject |
| private AccountDao _accountDao; |
| @Inject |
| private VMInstanceDao _instanceDao; |
| @Inject |
| private VirtualMachineManager _vmMgr; |
| @Inject |
| private AsyncJobManager _asyncJobMgr; |
| |
| private final Map<String, Method> _handlerMap = new HashMap<String, Method>(); |
| |
| @Override |
| public void runJob(AsyncJob job) { |
| try { |
| List<AsyncJobJoinMapVO> joinRecords = _joinMapDao.listJoinRecords(job.getId()); |
| if (joinRecords.size() != 1) { |
| logger.warn("AsyncJob-" + job.getId() |
| + " received wakeup call with un-supported joining job number: " + joinRecords.size()); |
| |
| // if we fail wakeup-execution for any reason, avoid release sync-source if there is any |
| job.setSyncSource(null); |
| return; |
| } |
| |
| AsyncJobJoinMapVO joinRecord = joinRecords.get(0); |
| VmWorkJobVO joinedJob = _workjobDao.findById(joinRecord.getJoinJobId()); |
| |
| Class<?> workClz = null; |
| try { |
| workClz = Class.forName(job.getCmd()); |
| } catch (ClassNotFoundException e) { |
| logger.error("VM work class " + job.getCmd() + " is not found", e); |
| return; |
| } |
| |
| // get original work context information from joined job |
| VmWork work = VmWorkSerializer.deserialize(workClz, joinedJob.getCmdInfo()); |
| assert (work != null); |
| |
| AccountVO account = _accountDao.findById(work.getAccountId()); |
| assert (account != null); |
| |
| VMInstanceVO vm = _instanceDao.findById(work.getVmId()); |
| assert (vm != null); |
| |
| CallContext.register(work.getUserId(), work.getAccountId(), job.getRelated()); |
| try { |
| Method handler = getHandler(joinRecord.getWakeupHandler()); |
| if (handler != null) { |
| handler.invoke(_vmMgr); |
| } else { |
| assert (false); |
| logger.error("Unable to find wakeup handler " + joinRecord.getWakeupHandler() + |
| " when waking up job-" + job.getId()); |
| } |
| } finally { |
| CallContext.unregister(); |
| } |
| } catch (Throwable e) { |
| logger.warn("Unexpected exception in waking up job-" + job.getId()); |
| |
| // if we fail wakeup-execution for any reason, avoid release sync-source if there is any |
| job.setSyncSource(null); |
| } |
| } |
| |
| private Method getHandler(String wakeupHandler) { |
| |
| synchronized (_handlerMap) { |
| Class<?> clz = _vmMgr.getClass(); |
| Method method = _handlerMap.get(wakeupHandler); |
| if (method != null) |
| return method; |
| |
| try { |
| method = clz.getMethod(wakeupHandler); |
| method.setAccessible(true); |
| } catch (SecurityException e) { |
| assert (false); |
| logger.error("Unexpected exception", e); |
| return null; |
| } catch (NoSuchMethodException e) { |
| assert (false); |
| logger.error("Unexpected exception", e); |
| return null; |
| } |
| |
| _handlerMap.put(wakeupHandler, method); |
| return method; |
| } |
| } |
| } |