| /* |
| * 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 org.apache.solr.client.solrj.cloud.AlreadyExistsException; |
| import org.apache.solr.client.solrj.cloud.DistribStateManager; |
| import org.apache.solr.client.solrj.cloud.SolrCloudManager; |
| import org.apache.solr.client.solrj.request.CollectionAdminRequest; |
| import org.apache.solr.common.ParWork; |
| 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.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.zookeeper.CreateMode; |
| import org.apache.zookeeper.KeeperException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.apache.solr.common.cloud.ZkStateReader.COLLECTION_PROP; |
| import static org.apache.solr.common.cloud.ZkStateReader.NRT_REPLICAS; |
| import static org.apache.solr.common.cloud.ZkStateReader.REPLICATION_FACTOR; |
| import java.io.IOException; |
| import java.lang.invoke.MethodHandles; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| public class CollectionMutator { |
| private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| protected final SolrCloudManager cloudManager; |
| protected final DistribStateManager stateManager; |
| |
| public CollectionMutator(SolrCloudManager cloudManager) { |
| this.cloudManager = cloudManager; |
| this.stateManager = cloudManager.getDistribStateManager(); |
| } |
| |
| public ClusterState createShard(final ClusterState clusterState, ZkNodeProps message) { |
| String collectionName = message.getStr(ZkStateReader.COLLECTION_PROP); |
| String shardId = message.getStr(ZkStateReader.SHARD_ID_PROP); |
| DocCollection collection = clusterState.getCollection(collectionName); |
| Slice slice = collection.getSlice(shardId); |
| if (slice == null) { |
| Map<String, Replica> replicas = Collections.EMPTY_MAP; |
| Map<String, Object> sliceProps = new HashMap<>(); |
| String shardRange = message.getStr(ZkStateReader.SHARD_RANGE_PROP); |
| String shardState = message.getStr(ZkStateReader.SHARD_STATE_PROP); |
| String shardParent = message.getStr(ZkStateReader.SHARD_PARENT_PROP); |
| String shardParentZkSession = message.getStr("shard_parent_zk_session"); |
| String shardParentNode = message.getStr("shard_parent_node"); |
| sliceProps.put(Slice.RANGE, shardRange); |
| sliceProps.put(ZkStateReader.STATE_PROP, shardState); |
| if (shardParent != null) { |
| sliceProps.put(Slice.PARENT, shardParent); |
| } |
| if (shardParentZkSession != null) { |
| sliceProps.put("shard_parent_zk_session", shardParentZkSession); |
| } |
| if (shardParentNode != null) { |
| sliceProps.put("shard_parent_node", shardParentNode); |
| } |
| collection = updateSlice(collectionName, collection, new Slice(shardId, replicas, sliceProps, collectionName, collection.getId(), (Replica.NodeNameToBaseUrl) cloudManager.getClusterStateProvider())); |
| |
| |
| // TODO - fix, no makePath (ensure every path part exists), async, single node |
| try { |
| |
| // stateManager.makePath(ZkStateReader.COLLECTIONS_ZKNODE + "/" + collectionName + "/" + shardId, null, CreateMode.PERSISTENT, false); |
| stateManager.makePath(ZkStateReader.COLLECTIONS_ZKNODE + "/" + collectionName + "/leader_elect/" + shardId, null, CreateMode.PERSISTENT, false); |
| stateManager.makePath(ZkStateReader.COLLECTIONS_ZKNODE + "/" + collectionName + "/leader_elect/" + shardId + "/election", null, CreateMode.PERSISTENT, false); |
| stateManager.makePath(ZkStateReader.COLLECTIONS_ZKNODE + "/" + collectionName + "/leaders/" + shardId, null, CreateMode.PERSISTENT, false); |
| |
| stateManager.makePath(ZkStateReader.COLLECTIONS_ZKNODE + "/" + collectionName + "/terms", null, CreateMode.PERSISTENT, false); |
| stateManager.makePath(ZkStateReader.COLLECTIONS_ZKNODE + "/" + collectionName + "/terms/" + shardId, ZkStateReader.emptyJson, CreateMode.PERSISTENT, false); |
| |
| } catch (AlreadyExistsException e) { |
| throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e); |
| } catch (IOException e) { |
| throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e); |
| } catch (KeeperException e) { |
| throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e); |
| } catch (InterruptedException e) { |
| ParWork.propagateInterrupt(e); |
| throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, e); |
| } |
| |
| return clusterState.copyWith(collectionName, collection); |
| } else { |
| log.error("Unable to create Shard: {} because it already exists in collection: {}", shardId, collectionName); |
| throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, "Unable to create Shard: " + shardId + " because it already exists in collection: " + collectionName); |
| } |
| } |
| |
| public ClusterState deleteShard(final ClusterState clusterState, ZkNodeProps message) { |
| final String sliceId = message.getStr(ZkStateReader.SHARD_ID_PROP); |
| final String collection = message.getStr(ZkStateReader.COLLECTION_PROP); |
| |
| log.info("Removing collection: {} shard: {} from clusterstate", collection, sliceId); |
| |
| DocCollection coll = clusterState.getCollection(collection); |
| |
| Map<String, Slice> newSlices = new LinkedHashMap<>(coll.getSlicesMap()); |
| newSlices.get(sliceId).getProperties().put("remove", "true"); |
| |
| DocCollection newCollection = coll.copyWithSlices(newSlices); |
| return clusterState.copyWith(collection, newCollection); |
| } |
| |
| public ClusterState modifyCollection(final ClusterState clusterState, ZkNodeProps message) { |
| DocCollection coll = clusterState.getCollection(message.getStr(COLLECTION_PROP)); |
| Map<String, Object> m = coll.shallowCopy(); |
| boolean hasAnyOps = false; |
| for (String prop : CollectionAdminRequest.MODIFIABLE_COLLECTION_PROPERTIES) { |
| if (message.containsKey(prop)) { |
| hasAnyOps = true; |
| if (message.get(prop) == null) { |
| m.remove(prop); |
| } else { |
| m.put(prop, message.get(prop)); |
| } |
| if (prop == REPLICATION_FACTOR) { //SOLR-11676 : keep NRT_REPLICAS and REPLICATION_FACTOR in sync |
| m.put(NRT_REPLICAS, message.get(REPLICATION_FACTOR)); |
| } |
| } |
| } |
| // other aux properties are also modifiable |
| for (String prop : message.keySet()) { |
| if (prop.startsWith(CollectionAdminRequest.PROPERTY_PREFIX)) { |
| hasAnyOps = true; |
| if (message.get(prop) == null) { |
| m.remove(prop); |
| } else { |
| m.put(prop, message.get(prop)); |
| } |
| } |
| } |
| |
| if (!hasAnyOps) { |
| return clusterState; |
| } |
| |
| return clusterState.copyWith(coll.getName(), |
| new DocCollection(coll.getName(), coll.getSlicesMap(), m, coll.getRouter(), coll.getZNodeVersion(), (ConcurrentHashMap) coll.getStateUpdates())); |
| } |
| |
| public static DocCollection updateSlice(String collectionName, DocCollection collection, Slice slice) { |
| DocCollection newCollection = null; |
| Map<String, Slice> slices; |
| |
| if (collection == null) { |
| throw new IllegalStateException("Collection does not exist: " + collectionName); |
| } else { |
| slices = new LinkedHashMap<>(collection.getSlicesMap()); // make a shallow copy |
| slices.put(slice.getName(), slice); |
| newCollection = collection.copyWithSlices(slices); |
| } |
| |
| return newCollection; |
| } |
| |
| static boolean checkCollectionKeyExistence(ZkNodeProps message) { |
| return checkKeyExistence(message, ZkStateReader.COLLECTION_PROP); |
| } |
| |
| static boolean checkKeyExistence(ZkNodeProps message, String key) { |
| String value = message.getStr(key); |
| if (value == null || value.trim().length() == 0) { |
| log.error("Skipping invalid Overseer message because it has no {} specified '{}'", key, message); |
| return false; |
| } |
| return true; |
| } |
| } |
| |