| /* |
| * 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.autoscaling.sim; |
| |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| import org.apache.solr.client.solrj.impl.ClusterStateProvider; |
| import org.apache.solr.common.cloud.ClusterState; |
| import org.apache.solr.common.cloud.DocCollection; |
| import org.apache.solr.common.cloud.ZkStateReader; |
| import org.apache.solr.common.util.Utils; |
| import org.noggit.CharArr; |
| import org.noggit.JSONWriter; |
| |
| /** |
| * Read-only snapshot of another {@link ClusterStateProvider}. |
| * |
| * @deprecated to be removed in Solr 9.0 (see SOLR-14656) |
| */ |
| public class SnapshotClusterStateProvider implements ClusterStateProvider { |
| |
| final Set<String> liveNodes; |
| final ClusterState clusterState; |
| final Map<String, Object> clusterProperties; |
| |
| public SnapshotClusterStateProvider(ClusterStateProvider other) throws Exception { |
| liveNodes = Collections.unmodifiableSet(new HashSet<>(other.getLiveNodes())); |
| ClusterState otherState = other.getClusterState(); |
| clusterState = new ClusterState(otherState.getZNodeVersion(), liveNodes, otherState.getCollectionsMap()); |
| clusterProperties = new HashMap<>(other.getClusterProperties()); |
| } |
| |
| public SnapshotClusterStateProvider(Map<String, Object> snapshot) { |
| Objects.requireNonNull(snapshot); |
| liveNodes = Collections.unmodifiableSet(new HashSet<>((Collection<String>)snapshot.getOrDefault("liveNodes", Collections.emptySet()))); |
| clusterProperties = (Map<String, Object>)snapshot.getOrDefault("clusterProperties", Collections.emptyMap()); |
| Map<String, Object> stateMap = new HashMap<>((Map<String, Object>)snapshot.getOrDefault("clusterState", Collections.emptyMap())); |
| Number version = (Number)stateMap.remove("version"); |
| clusterState = ClusterState.load(version != null ? version.intValue() : null, stateMap, liveNodes, ZkStateReader.CLUSTER_STATE); |
| } |
| |
| public Map<String, Object> getSnapshot() { |
| Map<String, Object> snapshot = new HashMap<>(); |
| snapshot.put("liveNodes", liveNodes); |
| if (clusterProperties != null) { |
| snapshot.put("clusterProperties", clusterProperties); |
| } |
| Map<String, Object> stateMap = new HashMap<>(); |
| snapshot.put("clusterState", stateMap); |
| stateMap.put("version", clusterState.getZNodeVersion()); |
| clusterState.forEachCollection(coll -> { |
| CharArr out = new CharArr(); |
| JSONWriter writer = new JSONWriter(out, 2); |
| coll.write(writer); |
| String json = out.toString(); |
| try { |
| stateMap.put(coll.getName(), Utils.fromJSON(json.getBytes("UTF-8"))); |
| } catch (UnsupportedEncodingException e) { |
| throw new RuntimeException("should not happen!", e); |
| } |
| }); |
| return snapshot; |
| } |
| |
| @Override |
| public ClusterState.CollectionRef getState(String collection) { |
| return clusterState.getCollectionRef(collection); |
| } |
| |
| @Override |
| public Set<String> getLiveNodes() { |
| return liveNodes; |
| } |
| |
| @Override |
| public List<String> resolveAlias(String alias) { |
| throw new UnsupportedOperationException("resolveAlias"); |
| } |
| |
| @Override |
| public Map<String, String> getAliasProperties(String alias) { |
| throw new UnsupportedOperationException("getAliasProperties"); |
| } |
| |
| @Override |
| public ClusterState getClusterState() throws IOException { |
| return clusterState; |
| } |
| |
| @Override |
| public Map<String, Object> getClusterProperties() { |
| return clusterProperties; |
| } |
| |
| @Override |
| public String getPolicyNameByCollection(String coll) { |
| DocCollection collection = clusterState.getCollectionOrNull(coll); |
| return collection == null ? null : (String)collection.getProperties().get("policy"); |
| } |
| |
| @Override |
| public void connect() { |
| |
| } |
| |
| @Override |
| public void close() throws IOException { |
| |
| } |
| } |