content: /*
   * 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.schema;
  
  import java.util.Collection;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.apache.cassandra.db.Mutation;
  import org.apache.cassandra.net.IVerbHandler;
  import org.apache.cassandra.net.Message;
  
  /**
   * Called when node receives updated schema state from the schema migration coordinator node.
   * Such happens when user makes local schema migration on one of the nodes in the ring
   * (which is going to act as coordinator) and that node sends (pushes) it's updated schema state
   * (in form of mutations) to all the alive nodes in the cluster.
   * @deprecated See CEP-21
   */
  @Deprecated(since = "CEP-21")
  public final class SchemaPushVerbHandler implements IVerbHandler<Collection<Mutation>>
  {
      public static final SchemaPushVerbHandler instance = new SchemaPushVerbHandler();
  
      private static final Logger logger = LoggerFactory.getLogger(SchemaPushVerbHandler.class);
  
      public void doVerb(final Message<Collection<Mutation>> message)
      {
          logger.warn("Ignoring schema push request from {}, please upgrade", message.from());
      }
  }
  