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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.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
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.DocCollection;
import org.apache.solr.common.cloud.DocRouter;
import org.apache.solr.common.cloud.Replica;
import org.apache.solr.common.cloud.Slice;
import org.apache.solr.common.cloud.ZkNodeProps;
import org.apache.solr.common.cloud.ZkStateReader;
import org.apache.solr.common.params.ShardParams;
import org.apache.solr.common.util.NamedList;
import org.apache.solr.common.util.SimpleOrderedMap;
import org.apache.solr.common.util.Utils;
import org.apache.zookeeper.KeeperException;
public class ClusterStatus {
private final ZkStateReader zkStateReader;
private final ZkNodeProps message;
private final String collection; // maybe null
public ClusterStatus(ZkStateReader zkStateReader, ZkNodeProps props) {
this.zkStateReader = zkStateReader;
this.message = props;
collection = props.getStr(ZkStateReader.COLLECTION_PROP);
}
@SuppressWarnings("unchecked")
public void getClusterStatus(NamedList results)
throws KeeperException, InterruptedException {
// read aliases
Aliases aliases = zkStateReader.getAliases();
Map> collectionVsAliases = new HashMap<>();
Map> aliasVsCollections = aliases.getCollectionAliasListMap();
for (Map.Entry> entry : aliasVsCollections.entrySet()) {
String alias = entry.getKey();
List colls = entry.getValue();
for (String coll : colls) {
if (collection == null || collection.equals(coll)) {
List list = collectionVsAliases.computeIfAbsent(coll, k -> new ArrayList<>());
list.add(alias);
}
}
}
Map roles = null;
if (zkStateReader.getZkClient().exists(ZkStateReader.ROLES, true)) {
roles = (Map) Utils.fromJSON(zkStateReader.getZkClient().getData(ZkStateReader.ROLES, null, null, true));
}
ClusterState clusterState = zkStateReader.getClusterState();
// convert cluster state into a map of writable types
byte[] bytes = Utils.toJSON(clusterState);
Map stateMap = (Map) Utils.fromJSON(bytes);
String routeKey = message.getStr(ShardParams._ROUTE_);
String shard = message.getStr(ZkStateReader.SHARD_ID_PROP);
Map collectionsMap = null;
if (collection == null) {
collectionsMap = clusterState.getCollectionsMap();
} else {
collectionsMap = Collections.singletonMap(collection, clusterState.getCollectionOrNull(collection));
}
boolean isAlias = aliasVsCollections.containsKey(collection);
boolean didNotFindCollection = collectionsMap.get(collection) == null;
if (didNotFindCollection && isAlias) {
// In this case this.collection is an alias name not a collection
// get all collections and filter out collections not in the alias
collectionsMap = clusterState.getCollectionsMap().entrySet().stream()
.filter((entry) -> aliasVsCollections.get(collection).contains(entry.getKey()))
.collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
}
NamedList