| /* |
| * 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.client.solrj.cloud.autoscaling; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.solr.client.solrj.SolrRequest; |
| import org.apache.solr.client.solrj.request.CollectionAdminRequest; |
| import org.apache.solr.common.cloud.Replica; |
| import org.apache.solr.common.params.CollectionParams; |
| import org.apache.solr.common.util.Pair; |
| |
| import static org.apache.solr.common.params.CollectionParams.CollectionAction.ADDREPLICA; |
| |
| /** |
| * |
| * @deprecated to be removed in Solr 9.0 (see SOLR-14656) |
| */ |
| class AddReplicaSuggester extends Suggester { |
| |
| @SuppressWarnings({"rawtypes"}) |
| SolrRequest init() { |
| SolrRequest operation = tryEachNode(true); |
| if (operation == null) operation = tryEachNode(false); |
| return operation; |
| } |
| |
| @SuppressWarnings({"rawtypes"}) |
| SolrRequest tryEachNode(boolean strict) { |
| @SuppressWarnings({"unchecked"}) |
| Set<Pair<String, String>> shards = (Set<Pair<String, String>>) hints.getOrDefault(Hint.COLL_SHARD, Collections.emptySet()); |
| if (shards.isEmpty()) { |
| throw new RuntimeException("add-replica requires 'collection' and 'shard'"); |
| } |
| for (Pair<String, String> shard : shards) { |
| Replica.Type type = Replica.Type.get((String) hints.get(Hint.REPLICATYPE)); |
| //iterate through nodes and identify the least loaded |
| List<Violation> leastSeriousViolation = null; |
| Row bestNode = null; |
| for (int i = getMatrix().size() - 1; i >= 0; i--) { |
| Row row = getMatrix().get(i); |
| if (!isNodeSuitableForReplicaAddition(row, null)) continue; |
| Row tmpRow = row.addReplica(shard.first(), shard.second(), type, strict); |
| List<Violation> errs = testChangedMatrix(strict, tmpRow.session); |
| if (!containsNewErrors(errs)) { |
| if ((errs.isEmpty() && isLessDeviant()) ||//there are no violations but this is deviating less |
| isLessSerious(errs, leastSeriousViolation)) {//there are errors , but this has less serious violation |
| leastSeriousViolation = errs; |
| bestNode = tmpRow; |
| } |
| } |
| } |
| |
| if (bestNode != null) {// there are no rule violations |
| this.session = bestNode.session; |
| return CollectionAdminRequest |
| .addReplicaToShard(shard.first(), shard.second()) |
| .setType(type) |
| .setNode(bestNode.node); |
| } |
| } |
| |
| return null; |
| } |
| |
| |
| @Override |
| public CollectionParams.CollectionAction getAction() { |
| return ADDREPLICA; |
| } |
| } |