Java tutorial
/************************************************************************* * Copyright 2009-2015 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; version 3 of the License. * * This program 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., 6755 Hollister Ave., Goleta * CA 93117, 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. ************************************************************************/ package com.eucalyptus.compute.common.internal.network; import java.util.NoSuchElementException; import org.apache.log4j.Logger; import org.hibernate.exception.ConstraintViolationException; import com.eucalyptus.auth.Accounts; import com.eucalyptus.auth.principal.AccountFullName; import com.eucalyptus.auth.principal.User; import com.eucalyptus.auth.principal.UserFullName; import com.eucalyptus.compute.common.CloudMetadatas; import com.eucalyptus.compute.common.internal.identifier.ResourceIdentifiers; import com.eucalyptus.compute.common.internal.util.DuplicateMetadataException; import com.eucalyptus.compute.common.internal.util.MetadataException; import com.eucalyptus.compute.common.internal.util.NoSuchMetadataException; import com.eucalyptus.compute.common.internal.vpc.Vpc; import com.eucalyptus.entities.Entities; import com.eucalyptus.entities.PersistenceExceptions; import com.eucalyptus.entities.TransactionException; import com.eucalyptus.entities.TransactionResource; import com.eucalyptus.entities.Transactions; import com.eucalyptus.records.Logs; import com.eucalyptus.auth.principal.OwnerFullName; import com.google.common.base.Predicates; import com.google.common.collect.Iterables; /** * */ public class NetworkGroups { private static final String DEFAULT_NETWORK_NAME = "default"; private static final Logger LOG = Logger.getLogger(NetworkGroups.class); public static void createDefault(final OwnerFullName ownerFullName) throws MetadataException { try (final TransactionResource tx = Entities.transactionFor(Vpc.class)) { if (Iterables.tryFind(Entities.query(Vpc.exampleDefault(ownerFullName.getAccountNumber())), Predicates.alwaysTrue()).isPresent()) { return; // skip default security group creation when there is a default VPC } } try { try { NetworkGroup net = Transactions.find(NetworkGroup.named( AccountFullName.getInstance(ownerFullName.getAccountNumber()), DEFAULT_NETWORK_NAME)); if (net == null) { create(ownerFullName, DEFAULT_NETWORK_NAME, "default group"); } } catch (NoSuchElementException | TransactionException ex) { try { create(ownerFullName, DEFAULT_NETWORK_NAME, "default group"); } catch (ConstraintViolationException ex1) { } } } catch (DuplicateMetadataException ex) { } } public static String defaultNetworkName() { return DEFAULT_NETWORK_NAME; } public static NetworkGroup create(final OwnerFullName ownerFullName, final String groupName, final String groupDescription) throws MetadataException { return create(ownerFullName, null, groupName, groupDescription); } public static NetworkGroup create(final OwnerFullName ownerFullName, final Vpc vpc, final String groupName, final String groupDescription) throws MetadataException { UserFullName userFullName = null; if (ownerFullName instanceof UserFullName) { userFullName = (UserFullName) ownerFullName; } else { try { User admin = Accounts.lookupPrincipalByAccountNumber(ownerFullName.getAccountNumber()); userFullName = UserFullName.getInstance(admin); } catch (Exception ex) { LOG.error(ex, ex); throw new NoSuchMetadataException( "Failed to create group because owning user could not be identified.", ex); } } final String resourceDesc = groupName + (vpc != null ? " in " + vpc.getDisplayName() : "") + " for " + userFullName.toString(); try (final TransactionResource db = Entities.transactionFor(NetworkGroup.class)) { try { Entities.uniqueResult(NetworkGroup.withUniqueName(userFullName.asAccountFullName(), CloudMetadatas.toDisplayName().apply(vpc), groupName)); throw new DuplicateMetadataException("Failed to create group: " + resourceDesc); } catch (final NoSuchElementException ex) { final NetworkGroup entity = Entities.persist(NetworkGroup.create(userFullName, vpc, ResourceIdentifiers.generateString(NetworkGroup.ID_PREFIX), groupName, groupDescription)); db.commit(); return entity; } } catch (final ConstraintViolationException ex) { Logs.exhaust().error(ex); throw new DuplicateMetadataException("Failed to create group: " + resourceDesc, ex); } catch (final Exception ex) { Logs.exhaust().error(ex, ex); throw new MetadataException("Failed to create group: " + resourceDesc, PersistenceExceptions.transform(ex)); } } }