/*************************************************************************
* 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.
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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.entities;
import javax.annotation.Nullable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EntityTransaction;
import javax.persistence.PersistenceContext;
import javax.persistence.PrePersist;
import javax.persistence.Table;
import org.apache.log4j.Logger;
import com.eucalyptus.blockstorage.Storage;
import com.eucalyptus.configurable.ConfigurableClass;
import com.eucalyptus.configurable.ConfigurableField;
import com.eucalyptus.entities.AbstractPersistent;
import com.eucalyptus.entities.Entities;
import com.eucalyptus.entities.Transactions;
import com.eucalyptus.upgrade.Upgrades;
import com.eucalyptus.upgrade.Upgrades.EntityUpgrade;
import com.eucalyptus.util.Exceptions;
import com.eucalyptus.walrus.entities.WalrusInfo;
import com.google.common.base.Predicate;
/**
* Global configuration information that is common to all SC instances, regardless of cluster or instance
*
*/
@Entity
@PersistenceContext(name = "eucalyptus_storage")
@Table(name = "blockstorage_global_configuration")
@ConfigurableClass(root = "storage", description = "Basic storage controller configuration.", singleton = true, deferred = true)
public class BlockStorageGlobalConfiguration extends AbstractPersistent {
private static Logger LOG = Logger.getLogger(BlockStorageGlobalConfiguration.class);
private static final int DEFAULT_GLOBAL_TOTAL_SNAPSHOT_SIZE_GB = 50;
@ConfigurableField(description = "Maximum total snapshot capacity (GB)", displayName = "Maximum total size allowed for snapshots", initial = "50")
@Column(name = "global_total_snapshot_size_limit_gb")
private Integer global_total_snapshot_size_limit_gb;
public Integer getGlobal_total_snapshot_size_limit_gb() {
return global_total_snapshot_size_limit_gb;
}
public void setGlobal_total_snapshot_size_limit_gb(Integer global_total_snapshot_size_limit_gb) {
this.global_total_snapshot_size_limit_gb = global_total_snapshot_size_limit_gb;
}
public BlockStorageGlobalConfiguration() {}
@PrePersist
private void initalize() {
if (this.global_total_snapshot_size_limit_gb == null) {
this.global_total_snapshot_size_limit_gb = DEFAULT_GLOBAL_TOTAL_SNAPSHOT_SIZE_GB;
}
}
public static BlockStorageGlobalConfiguration getInstance() {
BlockStorageGlobalConfiguration config = null;
try {
config = Transactions.find(new BlockStorageGlobalConfiguration());
} catch (Exception e) {
try {
config = Transactions.save(new BlockStorageGlobalConfiguration());
} catch (Exception e1) {
LOG.warn("Failed to load and save block storage global configuration");
config = new BlockStorageGlobalConfiguration();
config.initalize();
}
}
return config;
}
@EntityUpgrade(entities = {BlockStorageGlobalConfiguration.class}, since = Upgrades.Version.v4_0_0, value = Storage.class)
public static enum BSGC400Upgrade implements Predicate<Class> { // Set the max snapshot size from Walrus in 3.4.x
INSATANCE;
private static final Logger LOG = Logger.getLogger(BlockStorageGlobalConfiguration.BSGC400Upgrade.class);
@Override
public boolean apply(@Nullable Class arg0) {
EntityTransaction tran = Entities.get(BlockStorageGlobalConfiguration.class);
try {
WalrusInfo walrusConfig = WalrusInfo.getWalrusInfo();
BlockStorageGlobalConfiguration config = null;
try {
config = Entities.uniqueResult(new BlockStorageGlobalConfiguration());
config.setGlobal_total_snapshot_size_limit_gb(walrusConfig.getStorageMaxTotalSnapshotSizeInGb());
} catch (Exception e) {
config = new BlockStorageGlobalConfiguration();
config.setGlobal_total_snapshot_size_limit_gb(walrusConfig.getStorageMaxTotalSnapshotSizeInGb());
Entities.persist(config);
}
tran.commit();
} catch (Exception e) {
LOG.error("Error upgrading blockstorage global configuration", e);
tran.rollback();
Exceptions.toUndeclared("Error upgrading blockstorage global configuration", e);
} finally {
if (tran.isActive()) {
tran.rollback();
}
}
return true;
}
}
}