/*******************************************************************************
*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.
*******************************************************************************/
package edu.ucsb.eucalyptus.cloud.ws;
import org.apache.log4j.Logger;
import com.eucalyptus.entities.EntityWrapper;
import com.eucalyptus.util.EucalyptusCloudException;
import com.eucalyptus.util.StorageProperties;
import edu.ucsb.eucalyptus.cloud.entities.StorageStatsInfo;
import edu.ucsb.eucalyptus.msgs.StorageUsageStatsRecord;
public class BlockStorageStatistics {
private Logger LOG = Logger.getLogger( BlockStorageStatistics.class );
private Long totalSpaceUsed;
private Integer numberOfVolumes;
public BlockStorageStatistics() {
totalSpaceUsed = 0L;
numberOfVolumes = 0;
getStateInfo();
dump();
}
public void updateSpaceUsed(Long bytes) {
totalSpaceUsed += bytes;
updateStateInfo();
dump();
}
public Long getTotalSpaceUsed() {
return totalSpaceUsed;
}
public void incrementVolumeCount() {
numberOfVolumes++;
updateStateInfo();
dump();
}
public void decrementVolumeCount() {
numberOfVolumes--;
updateStateInfo();
dump();
}
public void incrementVolumeCount(long bytes) {
totalSpaceUsed += bytes;
numberOfVolumes++;
updateStateInfo();
dump();
}
public void decrementVolumeCount(long bytes) {
totalSpaceUsed += bytes;
numberOfVolumes--;
updateStateInfo();
dump();
}
public void dump() {
LOG.info(StorageUsageStatsRecord.create(numberOfVolumes, totalSpaceUsed));
}
private void getStateInfo() {
EntityWrapper<StorageStatsInfo> db = StorageProperties.getEntityWrapper();
try {
StorageStatsInfo storageStats = db.getUnique(new StorageStatsInfo(StorageProperties.NAME));
numberOfVolumes = storageStats.getNumberOfVolumes();
totalSpaceUsed = storageStats.getTotalSpaceUsed();
} catch(EucalyptusCloudException ex) {
StorageStatsInfo storageStats = new StorageStatsInfo(StorageProperties.NAME,
numberOfVolumes,
totalSpaceUsed);
db.add(storageStats);
}
db.commit();
}
private void updateStateInfo() {
EntityWrapper<StorageStatsInfo> db = StorageProperties.getEntityWrapper();
try {
StorageStatsInfo storageStats = db.getUnique(new StorageStatsInfo(StorageProperties.NAME));
storageStats.setNumberOfVolumes(numberOfVolumes);
storageStats.setTotalSpaceUsed(totalSpaceUsed);
} catch(EucalyptusCloudException ex) {
StorageStatsInfo walrusStats = new StorageStatsInfo(StorageProperties.NAME,
numberOfVolumes,
totalSpaceUsed);
db.add(walrusStats);
}
db.commit();
}
}