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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.handler.admin;
import java.net.URI;
import java.util.Optional;
import org.apache.solr.cloud.CloudDescriptor;
import org.apache.solr.cloud.ZkController;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.cloud.Slice;
import org.apache.solr.common.params.CoreAdminParams;
import org.apache.solr.common.params.SolrParams;
import org.apache.solr.core.SolrCore;
import org.apache.solr.core.backup.repository.BackupRepository;
import org.apache.solr.handler.RestoreCore;
import static org.apache.solr.common.params.CommonParams.NAME;
class RestoreCoreOp implements CoreAdminHandler.CoreAdminOp {
@Override
public void execute(CoreAdminHandler.CallInfo it) throws Exception {
final SolrParams params = it.req.getParams();
String cname = params.required().get(CoreAdminParams.CORE);
String name = params.required().get(NAME);
ZkController zkController = it.handler.coreContainer.getZkController();
if (zkController == null) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "Only valid for SolrCloud");
}
String repoName = params.get(CoreAdminParams.BACKUP_REPOSITORY);
BackupRepository repository = it.handler.coreContainer.newBackupRepository(Optional.ofNullable(repoName));
String location = repository.getBackupLocation(params.get(CoreAdminParams.BACKUP_LOCATION));
if (location == null) {
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "'location' is not specified as a query"
+ " parameter or as a default repository property");
}
URI locationUri = repository.createURI(location);
try (SolrCore core = it.handler.coreContainer.getCore(cname)) {
CloudDescriptor cd = core.getCoreDescriptor().getCloudDescriptor();
// this core must be the only replica in its shard otherwise
// we cannot guarantee consistency between replicas because when we add data (or restore index) to this replica
Slice slice = zkController.getClusterState().getCollection(cd.getCollectionName()).getSlice(cd.getShardId());
if (slice.getReplicas().size() != 1) {
throw new SolrException(SolrException.ErrorCode.SERVER_ERROR,
"Failed to restore core=" + core.getName() + ", the core must be the only replica in its shard");
}
RestoreCore restoreCore = new RestoreCore(repository, core, locationUri, name);
boolean success = restoreCore.doRestore();
if (!success) {
throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Failed to restore core=" + core.getName());
}
// other replicas to-be-created will know that they are out of date by
// looking at their term : 0 compare to term of this core : 1
zkController.getShardTerms(cd.getCollectionName(), cd.getShardId()).ensureHighestTermsAreNotZero();
}
}
}