/*
* 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.ambari.logsearch.handler;
import org.apache.ambari.logsearch.conf.SolrPropsConfig;
import org.apache.solr.client.solrj.impl.CloudSolrClient;
import org.apache.solr.client.solrj.request.CollectionAdminRequest;
import org.apache.solr.client.solrj.response.CollectionAdminResponse;
import org.apache.solr.common.SolrException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.ArrayList;
import java.util.List;
public class ListCollectionHandler implements SolrZkRequestHandler<List<String>> {
private static final Logger LOG = LoggerFactory.getLogger(ListCollectionHandler.class);
@Override
public List<String> handle(CloudSolrClient solrClient, SolrPropsConfig solrPropsConfig) throws Exception {
try {
CollectionAdminRequest.List colListReq = new CollectionAdminRequest.List();
CollectionAdminResponse response = colListReq.process(solrClient);
if (response.getStatus() != 0) {
LOG.error("Error getting collection list from solr. response=" + response);
return null;
}
return (List<String>) response.getResponse().get("collections");
} catch (SolrException e) {
LOG.error("getCollections() operation failed", e);
return new ArrayList<>();
}
}
}