Java tutorial
/******************************************************************************* *Copyright (c) 2009 Eucalyptus Systems, Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, only version 3 of the License. * * * This file is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License along * with this program. If not, see <http://www.gnu.org/licenses/>. * * Please contact Eucalyptus Systems, Inc., 130 Castilian * Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/> * if you need additional information or have any questions. * * This file may incorporate work covered under the following copyright and * permission notice: * * Software License Agreement (BSD License) * * Copyright (c) 2008, Regents of the University of California * All rights reserved. * * Redistribution and use of this software in source and binary forms, with * or without modification, are permitted provided that the following * conditions are met: * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. USERS OF * THIS SOFTWARE ACKNOWLEDGE THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE * LICENSED MATERIAL, COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS * SOFTWARE, AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING * IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, SANTA * BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, WHICH IN * THE REGENTS DISCRETION MAY INCLUDE, WITHOUT LIMITATION, REPLACEMENT * OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO IDENTIFIED, OR * WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT NEEDED TO COMPLY WITH * ANY SUCH LICENSES OR RIGHTS. *******************************************************************************/ /* * Author: chris grzegorczyk <grze@eucalyptus.com> */ package com.eucalyptus.sla; import java.util.List; import org.apache.log4j.Logger; import org.bouncycastle.util.encoders.Base64; import com.eucalyptus.cluster.Clusters; import com.eucalyptus.cluster.VmInstance; import com.eucalyptus.entities.Counters; import com.eucalyptus.records.EventType; import com.eucalyptus.scripting.ScriptExecutionFailedException; import com.eucalyptus.util.EucalyptusCloudException; import com.eucalyptus.util.LogUtil; import com.google.common.collect.Iterables; import com.google.common.collect.Lists; import edu.ucsb.eucalyptus.cloud.VmAllocationInfo; import com.eucalyptus.records.EventRecord; import edu.ucsb.eucalyptus.msgs.RunInstancesType; public class VmAdmissionControl { private static Logger LOG = Logger.getLogger(VmAdmissionControl.class); public VmAllocationInfo verify(RunInstancesType request) throws EucalyptusCloudException { //:: encapsulate the request into a VmAllocationInfo object and forward it on ::// VmAllocationInfo vmAllocInfo = new VmAllocationInfo(request); if (vmAllocInfo.getRequest().getInstanceType() == null || "".equals(vmAllocInfo.getRequest().getInstanceType())) { vmAllocInfo.getRequest().setInstanceType(VmInstance.DEFAULT_TYPE); } vmAllocInfo.setReservationIndex(Counters.getIdBlock(request.getMaxCount())); byte[] userData = new byte[0]; if (vmAllocInfo.getRequest().getUserData() != null) { try { userData = Base64.decode(vmAllocInfo.getRequest().getUserData()); } catch (Exception e) { } } vmAllocInfo.setUserData(userData); vmAllocInfo.getRequest().setUserData(new String(Base64.encode(userData))); return vmAllocInfo; } public VmAllocationInfo evaluate(VmAllocationInfo vmAllocInfo) throws EucalyptusCloudException { List<ResourceAllocator> pending = Lists.newArrayList(); pending.add(new NodeResourceAllocator()); if (Clusters.getInstance().hasNetworking()) { pending.add(new AddressAllocator()); pending.add(new PrivateNetworkAllocator()); pending.add(new SubnetIndexAllocator()); } List<ResourceAllocator> finished = Lists.newArrayList(); for (ResourceAllocator allocator : pending) { try { allocator.allocate(vmAllocInfo); finished.add(allocator); } catch (ScriptExecutionFailedException e) { if (e.getCause() != null) { throw new EucalyptusCloudException(e.getCause().getMessage(), e.getCause()); } else { throw new EucalyptusCloudException(e.getMessage(), e); } } catch (Throwable e) { LOG.debug(e, e); try { allocator.fail(vmAllocInfo, e); } catch (Throwable e1) { LOG.debug(e1, e1); } // for( ResourceAllocator rollback : Iterables.reverse( finished ) ) { // try { // rollback.fail( vmAllocInfo, e ); // } catch ( Throwable e1 ) { // LOG.debug( e1, e1 ); // } // } // mac : Iterables.reverse is deprecated for (int i = finished.size() - 1; i >= 0; i--) { try { ResourceAllocator rollback = finished.get(i); rollback.fail(vmAllocInfo, e); } catch (Throwable e1) { LOG.debug(e1, e1); } } throw new EucalyptusCloudException(e.getMessage(), e); } } //EventRecord.here( this.getClass(), EventType.VM_RESERVED, LogUtil.dumpObject( vmAllocInfo ) ).trace( ); return vmAllocInfo; } }