solr/core/src/java/org/apache/solr/cloud/api/collections/DeleteAliasCmd.java

/*
 * 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.solr.cloud.api.collections;

import org.apache.solr.common.cloud.ClusterState;
import org.apache.solr.common.cloud.ZkNodeProps;
import org.apache.solr.common.cloud.ZkStateReader;
import org.apache.solr.common.util.NamedList;

import static org.apache.solr.common.params.CommonParams.NAME;

public class DeleteAliasCmd implements OverseerCollectionMessageHandler.Cmd {
  private final OverseerCollectionMessageHandler ocmh;

  public DeleteAliasCmd(OverseerCollectionMessageHandler ocmh) {
    this.ocmh = ocmh;
  }

  @Override
  public void call(ClusterState state, ZkNodeProps message, @SuppressWarnings({"rawtypes"})NamedList results) throws Exception {
    String aliasName = message.getStr(NAME);

    ZkStateReader zkStateReader = ocmh.zkStateReader;
    zkStateReader.aliasesManager.applyModificationAndExportToZk(a -> a.cloneWithCollectionAlias(aliasName, null));
  }

}