/*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.cql3.statements;
import java.util.HashMap;
import java.util.Map;
import org.apache.cassandra.config.ConfigurationException;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.KSMetaData;
import org.apache.cassandra.config.Schema;
import org.apache.cassandra.locator.AbstractReplicationStrategy;
import org.apache.cassandra.service.ClientState;
import org.apache.cassandra.service.MigrationManager;
import org.apache.cassandra.service.StorageService;
import org.apache.cassandra.thrift.InvalidRequestException;
import org.apache.cassandra.thrift.SchemaDisagreementException;
import org.apache.cassandra.thrift.ThriftValidation;
/** A <code>CREATE KEYSPACE</code> statement parsed from a CQL query. */
public class CreateKeyspaceStatement extends SchemaAlteringStatement
{
private final String name;
private final Map<String, String> attrs;
private String strategyClass;
private Map<String, String> strategyOptions = new HashMap<String, String>();
/**
* Creates a new <code>CreateKeyspaceStatement</code> instance for a given
* keyspace name and keyword arguments.
*
* @param name the name of the keyspace to create
* @param attrs map of the raw keyword arguments that followed the <code>WITH</code> keyword.
*/
public CreateKeyspaceStatement(String name, Map<String, String> attrs)
{
super();
this.name = name;
this.attrs = attrs;
}
/**
* The <code>CqlParser</code> only goes as far as extracting the keyword arguments
* from these statements, so this method is responsible for processing and
* validating.
*
* @throws InvalidRequestException if arguments are missing or unacceptable
*/
@Override
public void validate(ClientState state) throws InvalidRequestException, SchemaDisagreementException
{
super.validate(state);
ThriftValidation.validateKeyspaceNotSystem(name);
// keyspace name
if (!name.matches("\\w+"))
throw new InvalidRequestException(String.format("\"%s\" is not a valid keyspace name", name));
if (name.length() > Schema.NAME_LENGTH)
throw new InvalidRequestException(String.format("Keyspace names shouldn't be more than %s characters long (got \"%s\")", Schema.NAME_LENGTH, name));
// required
if (!attrs.containsKey("strategy_class"))
throw new InvalidRequestException("missing required argument \"strategy_class\"");
strategyClass = attrs.get("strategy_class");
// optional
for (String key : attrs.keySet())
if ((key.contains(":")) && (key.startsWith("strategy_options")))
strategyOptions.put(key.split(":")[1], attrs.get(key));
// trial run to let ARS validate class + per-class options
try
{
AbstractReplicationStrategy.createReplicationStrategy(name,
AbstractReplicationStrategy.getClass(strategyClass),
StorageService.instance.getTokenMetadata(),
DatabaseDescriptor.getEndpointSnitch(),
strategyOptions);
}
catch (ConfigurationException e)
{
throw new InvalidRequestException(e.getMessage());
}
}
public void announceMigration() throws InvalidRequestException, ConfigurationException
{
KSMetaData ksm = KSMetaData.newKeyspace(name, strategyClass, strategyOptions);
ThriftValidation.validateKeyspaceNotYetExisting(name);
MigrationManager.announceNewKeyspace(ksm);
}
}