| /* |
| * 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 org.apache.cassandra.auth.Permission; |
| import org.apache.cassandra.config.Schema; |
| import org.apache.cassandra.config.SchemaConstants; |
| import org.apache.cassandra.exceptions.*; |
| import org.apache.cassandra.locator.LocalStrategy; |
| import org.apache.cassandra.schema.KeyspaceMetadata; |
| import org.apache.cassandra.schema.KeyspaceParams; |
| import org.apache.cassandra.service.ClientState; |
| import org.apache.cassandra.service.MigrationManager; |
| import org.apache.cassandra.service.QueryState; |
| import org.apache.cassandra.transport.Event; |
| |
| public class AlterKeyspaceStatement extends SchemaAlteringStatement |
| { |
| private final String name; |
| private final KeyspaceAttributes attrs; |
| |
| public AlterKeyspaceStatement(String name, KeyspaceAttributes attrs) |
| { |
| super(); |
| this.name = name; |
| this.attrs = attrs; |
| } |
| |
| @Override |
| public String keyspace() |
| { |
| return name; |
| } |
| |
| public void checkAccess(ClientState state) throws UnauthorizedException, InvalidRequestException |
| { |
| state.hasKeyspaceAccess(name, Permission.ALTER); |
| } |
| |
| public void validate(ClientState state) throws RequestValidationException |
| { |
| KeyspaceMetadata ksm = Schema.instance.getKSMetaData(name); |
| if (ksm == null) |
| throw new InvalidRequestException("Unknown keyspace " + name); |
| if (SchemaConstants.isLocalSystemKeyspace(ksm.name)) |
| throw new InvalidRequestException("Cannot alter system keyspace"); |
| |
| attrs.validate(); |
| |
| if (attrs.getReplicationStrategyClass() == null && !attrs.getReplicationOptions().isEmpty()) |
| throw new ConfigurationException("Missing replication strategy class"); |
| |
| if (attrs.getReplicationStrategyClass() != null) |
| { |
| // The strategy is validated through KSMetaData.validate() in announceKeyspaceUpdate below. |
| // However, for backward compatibility with thrift, this doesn't validate unexpected options yet, |
| // so doing proper validation here. |
| KeyspaceParams params = attrs.asAlteredKeyspaceParams(ksm.params); |
| params.validate(name); |
| if (params.replication.klass.equals(LocalStrategy.class)) |
| throw new ConfigurationException("Unable to use given strategy class: LocalStrategy is reserved for internal use."); |
| } |
| } |
| |
| public Event.SchemaChange announceMigration(QueryState queryState, boolean isLocalOnly) throws RequestValidationException |
| { |
| KeyspaceMetadata oldKsm = Schema.instance.getKSMetaData(name); |
| // In the (very) unlikely case the keyspace was dropped since validate() |
| if (oldKsm == null) |
| throw new InvalidRequestException("Unknown keyspace " + name); |
| |
| KeyspaceMetadata newKsm = oldKsm.withSwapped(attrs.asAlteredKeyspaceParams(oldKsm.params)); |
| MigrationManager.announceKeyspaceUpdate(newKsm, isLocalOnly); |
| return new Event.SchemaChange(Event.SchemaChange.Change.UPDATED, keyspace()); |
| } |
| } |