/*************************************************************************
* 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
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*
* 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
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************************************************************************/
package com.eucalyptus.blockstorage.async;
import java.util.List;
import org.apache.log4j.Logger;
import com.eucalyptus.blockstorage.LogicalStorageManager;
import com.eucalyptus.blockstorage.entities.SnapshotInfo;
import com.eucalyptus.blockstorage.entities.VolumeInfo;
import com.eucalyptus.blockstorage.util.StorageProperties;
import com.eucalyptus.entities.Entities;
import com.eucalyptus.entities.TransactionResource;
import com.eucalyptus.system.Threads;
import com.eucalyptus.util.EucalyptusCloudException;
import com.google.common.collect.Lists;
public class VolumesConvertor extends Thread {
private static Logger LOG = Logger.getLogger(VolumesConvertor.class);
private static final Object LOCK = new Object();
private LogicalStorageManager fromBlockManager;
private LogicalStorageManager toBlockManager;
public VolumesConvertor(LogicalStorageManager fromBlockManager, LogicalStorageManager toBlockManager) {
super(Threads.threadUniqueName("storage-volumes-convertor"));
this.fromBlockManager = fromBlockManager;
this.toBlockManager = toBlockManager;
}
@Override
public void run() {
// This is a heavy weight operation. It must execute atomically.
// All other volume operations are forbidden when a conversion is in progress.
synchronized (LOCK) {
StorageProperties.enableStorage = StorageProperties.enableSnapshots = false;
List<VolumeInfo> volumes = Lists.newArrayList();
List<SnapshotInfo> snapshots = Lists.newArrayList();
try (TransactionResource tran = Entities.transactionFor(VolumeInfo.class)) {
VolumeInfo volumeInfo = new VolumeInfo();
volumeInfo.setStatus(StorageProperties.Status.available.toString());
List<VolumeInfo> volumeInfos = Entities.query(volumeInfo);
volumes.addAll(volumeInfos);
SnapshotInfo snapInfo = new SnapshotInfo();
snapInfo.setStatus(StorageProperties.Status.available.toString());
List<SnapshotInfo> snapshotInfos = Entities.query(snapInfo);
snapshots.addAll(snapshotInfos);
tran.commit();
}
for (VolumeInfo volume : volumes) {
String volumeId = volume.getVolumeId();
try {
LOG.info("Converting volume: " + volumeId + " please wait...");
String volumePath = fromBlockManager.getVolumePath(volumeId);
toBlockManager.importVolume(volumeId, volumePath, volume.getSize());
fromBlockManager.finishVolume(volumeId);
LOG.info("Done converting volume: " + volumeId);
} catch (Exception ex) {
LOG.error(ex);
try {
toBlockManager.deleteVolume(volumeId);
} catch (EucalyptusCloudException e1) {
LOG.error(e1);
}
// this one failed, continue processing the rest
}
}
for (SnapshotInfo snap : snapshots) {
String snapshotId = snap.getSnapshotId();
try {
LOG.info("Converting snapshot: " + snapshotId + " please wait...");
String snapPath = fromBlockManager.getSnapshotPath(snapshotId);
int size = fromBlockManager.getSnapshotSize(snapshotId);
toBlockManager.importSnapshot(snapshotId, snap.getVolumeId(), snapPath, size);
fromBlockManager.finishVolume(snapshotId);
LOG.info("Done converting snapshot: " + snapshotId);
} catch (Exception ex) {
LOG.error(ex);
try {
toBlockManager.deleteSnapshot(snapshotId, snap.getSnapPointId());
} catch (EucalyptusCloudException e1) {
LOG.error(e1);
}
// this one failed, continue processing the rest
}
}
LOG.info("Conversion complete");
StorageProperties.enableStorage = StorageProperties.enableSnapshots = true;
}
}
}