| /* |
| * 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.overseer; |
| |
| import java.lang.invoke.MethodHandles; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.solr.client.solrj.cloud.DistribStateManager; |
| import org.apache.solr.client.solrj.cloud.SolrCloudManager; |
| import org.apache.solr.cloud.api.collections.OverseerCollectionMessageHandler; |
| import org.apache.solr.common.SolrException; |
| 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.ImplicitDocRouter; |
| 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.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.apache.solr.common.params.CommonParams.NAME; |
| |
| public class ClusterStateMutator { |
| private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| protected final SolrCloudManager dataProvider; |
| protected final DistribStateManager stateManager; |
| |
| public ClusterStateMutator(SolrCloudManager dataProvider) { |
| this.dataProvider = dataProvider; |
| this.stateManager = dataProvider.getDistribStateManager(); |
| } |
| |
| @SuppressWarnings({"unchecked"}) |
| public ZkWriteCommand createCollection(ClusterState clusterState, ZkNodeProps message) { |
| String cName = message.getStr(NAME); |
| log.debug("building a new cName: {}", cName); |
| if (clusterState.hasCollection(cName)) { |
| log.warn("Collection {} already exists. exit", cName); |
| return ZkStateWriter.NO_OP; |
| } |
| |
| Map<String, Object> routerSpec = DocRouter.getRouterSpec(message); |
| String routerName = routerSpec.get(NAME) == null ? DocRouter.DEFAULT_NAME : (String) routerSpec.get(NAME); |
| DocRouter router = DocRouter.getDocRouter(routerName); |
| |
| Object messageShardsObj = message.get("shards"); |
| |
| Map<String, Slice> slices; |
| if (messageShardsObj instanceof Map) { // we are being explicitly told the slice data (e.g. coll restore) |
| slices = Slice.loadAllFromMap(cName, (Map<String, Object>)messageShardsObj); |
| } else { |
| List<String> shardNames = new ArrayList<>(); |
| |
| if (router instanceof ImplicitDocRouter) { |
| getShardNames(shardNames, message.getStr("shards", DocRouter.DEFAULT_NAME)); |
| } else { |
| int numShards = message.getInt(ZkStateReader.NUM_SHARDS_PROP, -1); |
| if (numShards < 1) |
| throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "numShards is a required parameter for 'compositeId' router"); |
| getShardNames(numShards, shardNames); |
| } |
| List<DocRouter.Range> ranges = router.partitionRange(shardNames.size(), router.fullRange());//maybe null |
| |
| slices = new LinkedHashMap<>(); |
| for (int i = 0; i < shardNames.size(); i++) { |
| String sliceName = shardNames.get(i); |
| |
| Map<String, Object> sliceProps = new LinkedHashMap<>(1); |
| sliceProps.put(Slice.RANGE, ranges == null ? null : ranges.get(i)); |
| |
| slices.put(sliceName, new Slice(sliceName, null, sliceProps,cName)); |
| } |
| } |
| |
| Map<String, Object> collectionProps = new HashMap<>(); |
| |
| for (Map.Entry<String, Object> e : OverseerCollectionMessageHandler.COLLECTION_PROPS_AND_DEFAULTS.entrySet()) { |
| Object val = message.get(e.getKey()); |
| if (val == null) { |
| val = OverseerCollectionMessageHandler.COLLECTION_PROPS_AND_DEFAULTS.get(e.getKey()); |
| } |
| if (val != null) collectionProps.put(e.getKey(), val); |
| } |
| collectionProps.put(DocCollection.DOC_ROUTER, routerSpec); |
| |
| if (message.getStr("fromApi") == null) { |
| collectionProps.put("autoCreated", "true"); |
| } |
| |
| //TODO default to 2; but need to debug why BasicDistributedZk2Test fails early on |
| String znode = message.getInt(DocCollection.STATE_FORMAT, 1) == 1 ? null |
| : ZkStateReader.getCollectionPath(cName); |
| |
| DocCollection newCollection = new DocCollection(cName, |
| slices, collectionProps, router, -1, znode); |
| |
| return new ZkWriteCommand(cName, newCollection); |
| } |
| |
| public ZkWriteCommand deleteCollection(ClusterState clusterState, ZkNodeProps message) { |
| final String collection = message.getStr(NAME); |
| if (!CollectionMutator.checkKeyExistence(message, NAME)) return ZkStateWriter.NO_OP; |
| DocCollection coll = clusterState.getCollectionOrNull(collection); |
| if (coll == null) return ZkStateWriter.NO_OP; |
| |
| return new ZkWriteCommand(coll.getName(), null); |
| } |
| |
| public static ClusterState newState(ClusterState state, String name, DocCollection collection) { |
| ClusterState newClusterState = null; |
| if (collection == null) { |
| newClusterState = state.copyWith(name, null); |
| } else { |
| newClusterState = state.copyWith(name, collection); |
| } |
| return newClusterState; |
| } |
| |
| public static void getShardNames(Integer numShards, List<String> shardNames) { |
| if (numShards == null) |
| throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "numShards" + " is a required param"); |
| for (int i = 0; i < numShards; i++) { |
| final String sliceName = "shard" + (i + 1); |
| shardNames.add(sliceName); |
| } |
| |
| } |
| |
| public static void getShardNames(List<String> shardNames, String shards) { |
| if (shards == null) |
| throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "shards" + " is a required param"); |
| for (String s : shards.split(",")) { |
| if (s == null || s.trim().isEmpty()) continue; |
| shardNames.add(s.trim()); |
| } |
| if (shardNames.isEmpty()) |
| throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, "shards" + " is a required param"); |
| } |
| |
| /* |
| * Return an already assigned id or null if not assigned |
| */ |
| public static String getAssignedId(final DocCollection collection, final String nodeName) { |
| Collection<Slice> slices = collection != null ? collection.getSlices() : null; |
| if (slices != null) { |
| for (Slice slice : slices) { |
| if (slice.getReplicasMap().get(nodeName) != null) { |
| return slice.getName(); |
| } |
| } |
| } |
| return null; |
| } |
| |
| public static String getAssignedCoreNodeName(DocCollection collection, String forNodeName, String forCoreName) { |
| Collection<Slice> slices = collection != null ? collection.getSlices() : null; |
| if (slices != null) { |
| for (Slice slice : slices) { |
| for (Replica replica : slice.getReplicas()) { |
| String nodeName = replica.getStr(ZkStateReader.NODE_NAME_PROP); |
| String core = replica.getStr(ZkStateReader.CORE_NAME_PROP); |
| |
| if (nodeName.equals(forNodeName) && core.equals(forCoreName)) { |
| return replica.getName(); |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| public ZkWriteCommand migrateStateFormat(ClusterState clusterState, ZkNodeProps message) { |
| final String collection = message.getStr(ZkStateReader.COLLECTION_PROP); |
| if (!CollectionMutator.checkKeyExistence(message, ZkStateReader.COLLECTION_PROP)) return ZkStateWriter.NO_OP; |
| DocCollection coll = clusterState.getCollectionOrNull(collection); |
| if (coll == null || coll.getStateFormat() == 2) return ZkStateWriter.NO_OP; |
| |
| return new ZkWriteCommand(coll.getName(), |
| new DocCollection(coll.getName(), coll.getSlicesMap(), coll.getProperties(), coll.getRouter(), 0, |
| ZkStateReader.getCollectionPath(collection))); |
| } |
| } |
| |