| /* |
| * 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.impl; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.NoSuchElementException; |
| |
| import org.apache.solr.client.solrj.cloud.autoscaling.AlreadyExistsException; |
| import org.apache.solr.client.solrj.cloud.autoscaling.AutoScalingConfig; |
| import org.apache.solr.client.solrj.cloud.autoscaling.BadVersionException; |
| import org.apache.solr.client.solrj.cloud.DistribStateManager; |
| import org.apache.solr.client.solrj.cloud.autoscaling.NotEmptyException; |
| import org.apache.solr.client.solrj.cloud.autoscaling.VersionedData; |
| import org.apache.solr.common.AlreadyClosedException; |
| import org.apache.solr.common.cloud.PerReplicaStates; |
| import org.apache.solr.common.cloud.SolrZkClient; |
| import org.apache.solr.common.cloud.ZkStateReader; |
| import org.apache.solr.common.params.AutoScalingParams; |
| import org.apache.zookeeper.CreateMode; |
| import org.apache.zookeeper.KeeperException; |
| import org.apache.zookeeper.Op; |
| import org.apache.zookeeper.OpResult; |
| import org.apache.zookeeper.Watcher; |
| import org.apache.zookeeper.data.Stat; |
| |
| import static org.apache.solr.common.util.Utils.fromJSON; |
| |
| /** |
| * Implementation of {@link DistribStateManager} that uses Zookeeper. |
| */ |
| public class ZkDistribStateManager implements DistribStateManager { |
| |
| private final SolrZkClient zkClient; |
| |
| public ZkDistribStateManager(SolrZkClient zkClient) { |
| this.zkClient = zkClient; |
| } |
| |
| @Override |
| public boolean hasData(String path) throws IOException, KeeperException, InterruptedException { |
| try { |
| return zkClient.exists(path, true); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| public List<String> listData(String path, Watcher watcher) throws NoSuchElementException, IOException, KeeperException, InterruptedException { |
| try { |
| return zkClient.getChildren(path, watcher, true); |
| } catch (KeeperException.NoNodeException e) { |
| throw new NoSuchElementException(path); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| public List<String> listData(String path) throws NoSuchElementException, IOException, KeeperException, InterruptedException { |
| return listData(path, null); |
| } |
| |
| @Override |
| public VersionedData getData(String path, Watcher watcher) throws NoSuchElementException, IOException, KeeperException, InterruptedException { |
| Stat stat = new Stat(); |
| try { |
| byte[] bytes = zkClient.getData(path, watcher, stat, true); |
| return new VersionedData(stat.getVersion(), bytes, |
| stat.getEphemeralOwner() != 0 ? CreateMode.EPHEMERAL : CreateMode.PERSISTENT, |
| String.valueOf(stat.getEphemeralOwner())); |
| } catch (KeeperException.NoNodeException e) { |
| throw new NoSuchElementException(path); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| public void makePath(String path) throws AlreadyExistsException, IOException, KeeperException, InterruptedException { |
| try { |
| zkClient.makePath(path, true); |
| } catch (KeeperException.NodeExistsException e) { |
| throw new AlreadyExistsException(path); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| public void makePath(String path, byte[] data, CreateMode createMode, boolean failOnExists) throws AlreadyExistsException, IOException, KeeperException, InterruptedException { |
| try { |
| zkClient.makePath(path, data, createMode, null, failOnExists, true); |
| } catch (KeeperException.NodeExistsException e) { |
| throw new AlreadyExistsException(path); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| public String createData(String path, byte[] data, CreateMode mode) throws NoSuchElementException, AlreadyExistsException, IOException, KeeperException, InterruptedException { |
| try { |
| return zkClient.create(path, data, mode, true); |
| } catch (KeeperException.NoNodeException e) { |
| throw new NoSuchElementException(path); |
| } catch (KeeperException.NodeExistsException e) { |
| throw new AlreadyExistsException(path); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| public void removeData(String path, int version) throws NoSuchElementException, BadVersionException, NotEmptyException, IOException, KeeperException, InterruptedException { |
| try { |
| zkClient.delete(path, version, true); |
| } catch (KeeperException.NoNodeException e) { |
| throw new NoSuchElementException(path); |
| } catch (KeeperException.NotEmptyException e) { |
| throw new NotEmptyException(path); |
| } catch (KeeperException.BadVersionException e) { |
| throw new BadVersionException(version, path); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| public void setData(String path, byte[] data, int version) throws BadVersionException, NoSuchElementException, IOException, KeeperException, InterruptedException { |
| try { |
| zkClient.setData(path, data, version, true); |
| } catch (KeeperException.NoNodeException e) { |
| throw new NoSuchElementException(path); |
| } catch (KeeperException.BadVersionException e) { |
| throw new BadVersionException(version, path); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| public List<OpResult> multi(Iterable<Op> ops) throws BadVersionException, AlreadyExistsException, NoSuchElementException, IOException, KeeperException, InterruptedException { |
| try { |
| return zkClient.multi(ops, true); |
| } catch (KeeperException.NoNodeException e) { |
| throw new NoSuchElementException(ops.toString()); |
| } catch (KeeperException.NodeExistsException e) { |
| throw new AlreadyExistsException(ops.toString()); |
| } catch (KeeperException.BadVersionException e) { |
| throw new BadVersionException(-1, ops.toString()); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new AlreadyClosedException(); |
| } |
| } |
| |
| @Override |
| @SuppressWarnings({"unchecked"}) |
| public AutoScalingConfig getAutoScalingConfig(Watcher watcher) throws InterruptedException, IOException { |
| Map<String, Object> map = new HashMap<>(); |
| Stat stat = new Stat(); |
| try { |
| byte[] bytes = zkClient.getData(ZkStateReader.SOLR_AUTOSCALING_CONF_PATH, watcher, stat, true); |
| if (bytes != null && bytes.length > 0) { |
| map = (Map<String, Object>) fromJSON(bytes); |
| } |
| } catch (KeeperException.NoNodeException e) { |
| // ignore |
| } catch (KeeperException e) { |
| throw new IOException(e); |
| } |
| map.put(AutoScalingParams.ZK_VERSION, stat.getVersion()); |
| return new AutoScalingConfig(map); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| |
| } |
| |
| public SolrZkClient getZkClient() { |
| return zkClient; |
| } |
| |
| @Override |
| public PerReplicaStates getReplicaStates(String path) throws KeeperException, InterruptedException { |
| return PerReplicaStates.fetch(path, zkClient, null); |
| } |
| } |