/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cassandra.db.migration;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.ConfigurationException;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.KSMetaData;
import org.apache.cassandra.db.HintedHandOffManager;
import org.apache.cassandra.db.SystemTable;
import org.apache.cassandra.db.Table;
import org.apache.cassandra.db.commitlog.CommitLog;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.utils.UUIDGen;
import java.io.IOException;
public class DropKeyspace extends Migration
{
private String name;
private boolean blockOnFileDeletion;
/** Required no-arg constructor */
protected DropKeyspace() { /* pass */ }
public DropKeyspace(String name, boolean blockOnFileDeletion) throws ConfigurationException, IOException
{
super(UUIDGen.makeType1UUIDFromHost(FBUtilities.getLocalAddress()), DatabaseDescriptor.getDefsVersion());
this.name = name;
this.blockOnFileDeletion = blockOnFileDeletion;
KSMetaData ksm = DatabaseDescriptor.getTableDefinition(name);
if (ksm == null)
throw new ConfigurationException("Keyspace does not exist.");
rm = makeDefinitionMutation(null, ksm, newVersion);
}
@Override
public void beforeApplyModels()
{
if (!clientMode)
Table.open(name).snapshot(null);
}
@Override
public void applyModels() throws IOException
{
KSMetaData ksm = DatabaseDescriptor.getTableDefinition(name);
// remove the table from the static instances.
Table table = Table.clear(ksm.name);
if (table == null)
throw new IOException("Table is not active. " + ksm.name);
// remove all cfs from the table instance.
for (CFMetaData cfm : ksm.cfMetaData().values())
{
CFMetaData.purge(cfm);
if (!clientMode)
{
table.dropCf(cfm.cfId);
SystemTable.markForRemoval(cfm);
}
}
// reset defs.
DatabaseDescriptor.clearTableDefinition(ksm, newVersion);
if (!clientMode)
{
CommitLog.instance().forceNewSegment();
Migration.cleanupDeadFiles(blockOnFileDeletion);
// clear up any local hinted data for this keyspace.
HintedHandOffManager.renameHints(name, null);
}
}
public void subdeflate(org.apache.cassandra.db.migration.avro.Migration mi)
{
org.apache.cassandra.db.migration.avro.DropKeyspace dks = new org.apache.cassandra.db.migration.avro.DropKeyspace();
dks.ksname = new org.apache.avro.util.Utf8(name);
dks.block_on_deletion = blockOnFileDeletion;
mi.migration = dks;
}
public void subinflate(org.apache.cassandra.db.migration.avro.Migration mi)
{
org.apache.cassandra.db.migration.avro.DropKeyspace dks = (org.apache.cassandra.db.migration.avro.DropKeyspace)mi.migration;
name = dks.ksname.toString();
blockOnFileDeletion = dks.block_on_deletion;
}
}