Java tutorial
/************************************************************************* * Copyright 2009-2014 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.blockstorage; import java.nio.file.Files; import java.nio.file.Paths; import java.util.Collections; import java.util.List; import java.util.Map; import org.apache.commons.lang.StringUtils; import org.apache.log4j.Logger; import org.hibernate.criterion.Criterion; import org.hibernate.criterion.Restrictions; import com.eucalyptus.blockstorage.entities.SnapshotPart; import com.eucalyptus.blockstorage.entities.SnapshotPart.SnapshotPartState; import com.eucalyptus.blockstorage.entities.SnapshotUploadInfo; import com.eucalyptus.blockstorage.entities.SnapshotUploadInfo.SnapshotUploadState; import com.eucalyptus.entities.Entities; import com.eucalyptus.entities.TransactionResource; import com.eucalyptus.storage.common.CheckerTask; import com.google.common.collect.Maps; /** * Checker task for cleaning up aborted uploads and removing the expired uploads from the database. Gets initialized in BlockStorageController and runs * periodically * * @author Swathi Gangisetty */ public class SnapshotUploadCheckerTask extends CheckerTask { private Logger LOG = Logger.getLogger(SnapshotUploadCheckerTask.class); public SnapshotUploadCheckerTask() { this.name = SnapshotUploadCheckerTask.class.getName(); } @Override public void run() { // Clean up aborted uploads cleanupAbortedUploads(); // Remove expired entities deleteExpiredUploads(); } private void cleanupAbortedUploads() { try (TransactionResource snapTran = Entities.transactionFor(SnapshotUploadInfo.class)) { List<SnapshotUploadInfo> snapUploadInfoList = Entities .query(new SnapshotUploadInfo().withState(SnapshotUploadState.aborted)); for (SnapshotUploadInfo snapUploadInfo : snapUploadInfoList) { LOG.debug("Cleaning aborted entity " + snapUploadInfo); try (TransactionResource partTran = Entities.transactionFor(SnapshotPart.class)) { List<SnapshotPart> parts = Entities .query(new SnapshotPart(snapUploadInfo.getSnapshotId(), snapUploadInfo.getBucketName(), snapUploadInfo.getKeyName(), snapUploadInfo.getUploadId())); for (SnapshotPart part : parts) { if (StringUtils.isNotBlank(part.getFileName())) { LOG.debug("Deleting snapshot part from disk: " + part.getFileName()); if (!Files.deleteIfExists(Paths.get(part.getFileName()))) { LOG.warn("Could not delete snapshot part from disk: " + part.getFileName()); } } part.setState(SnapshotPartState.cleaned); } partTran.commit(); } snapUploadInfo.setPurgeTime(System.currentTimeMillis() + SnapshotUploadInfo.PURGE_INTERVAL); snapUploadInfo.setState(SnapshotUploadState.cleaned); } snapTran.commit(); } catch (Exception e) { LOG.debug("Error updating snapshot upload state during clean up" + e); } } private void deleteExpiredUploads() { try (TransactionResource snapTran = Entities.transactionFor(SnapshotUploadInfo.class)) { Criterion criterion = Restrictions.and( Restrictions.or(Restrictions.like("state", SnapshotUploadState.cleaned), Restrictions.like("state", SnapshotUploadState.uploaded)), Restrictions.le("purgeTime", System.currentTimeMillis())); List<SnapshotUploadInfo> snapshotUploadInfoList = Entities.query(new SnapshotUploadInfo(), Boolean.FALSE, criterion, Collections.EMPTY_MAP); for (SnapshotUploadInfo snapUploadInfo : snapshotUploadInfoList) { LOG.debug("Deleting expired entity from DB " + snapUploadInfo); Map<String, String> parameters = Maps.newHashMap(); parameters.put("snapshotId", snapUploadInfo.getSnapshotId()); parameters.put("bucketName", snapUploadInfo.getBucketName()); parameters.put("keyName", snapUploadInfo.getKeyName()); if (snapUploadInfo.getUploadId() != null) { parameters.put("uploadId", snapUploadInfo.getUploadId()); Entities.deleteAllMatching(SnapshotPart.class, "WHERE snapshot_id = :snapshotId AND bucket_name = :bucketName AND key_name = :keyName AND upload_id = :uploadId", parameters); } else { Entities.deleteAllMatching(SnapshotPart.class, "WHERE snapshot_id = :snapshotId AND bucket_name = :bucketName AND key_name = :keyName", parameters); } Entities.delete(snapUploadInfo); } snapTran.commit(); } catch (Exception e) { LOG.debug("Error deleting expired snapshot upload info entities" + e); } } }