org.apache.solr.cloud.api.collections.RenameCmd Maven / Gradle / Ivy
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* 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 java.lang.invoke.MethodHandles;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.cloud.Aliases;
import org.apache.solr.common.cloud.ClusterState;
import org.apache.solr.common.cloud.ZkNodeProps;
import org.apache.solr.common.params.CollectionAdminParams;
import org.apache.solr.common.params.CoreAdminParams;
import org.apache.solr.common.util.NamedList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.solr.common.params.CollectionAdminParams.FOLLOW_ALIASES;
/**
*
*/
public class RenameCmd implements OverseerCollectionMessageHandler.Cmd {
private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
private final OverseerCollectionMessageHandler ocmh;
public RenameCmd(OverseerCollectionMessageHandler ocmh) {
this.ocmh = ocmh;
}
@Override
public void call(ClusterState state, ZkNodeProps message, NamedList results) throws Exception {
String extCollectionName = message.getStr(CoreAdminParams.NAME);
String target = message.getStr(CollectionAdminParams.TARGET);
if (ocmh.zkStateReader.aliasesManager != null) { // not a mock ZkStateReader
ocmh.zkStateReader.aliasesManager.update();
}
if (extCollectionName == null || target == null) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "both collection 'name' and 'target' name must be specified");
}
Aliases aliases = ocmh.zkStateReader.getAliases();
boolean followAliases = message.getBool(FOLLOW_ALIASES, false);
String collectionName;
if (followAliases) {
collectionName = aliases.resolveSimpleAlias(extCollectionName);
} else {
collectionName = extCollectionName;
}
if (!state.hasCollection(collectionName)) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "source collection '" + collectionName + "' not found.");
}
if (ocmh.zkStateReader.getAliases().hasAlias(target)) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "target alias '" + target + "' exists: "
+ ocmh.zkStateReader.getAliases().getCollectionAliasListMap().get(target));
}
ocmh.zkStateReader.aliasesManager.applyModificationAndExportToZk(a -> a.cloneWithRename(extCollectionName, target));
}
}