| /* |
| * 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.jackrabbit.oak.plugins.index.elasticsearch; |
| |
| import com.google.common.collect.Maps; |
| import org.apache.http.HttpHost; |
| import org.elasticsearch.client.RestClient; |
| import org.elasticsearch.client.RestHighLevelClient; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| |
| public class ElasticsearchConnectionFactory implements Closeable { |
| private static final Logger LOG = LoggerFactory.getLogger(ElasticsearchConnectionFactory.class); |
| private final ConcurrentMap<ElasticsearchCoordinate, RestHighLevelClient> clientMap = Maps.newConcurrentMap(); |
| |
| private final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
| private final AtomicBoolean isClosed = new AtomicBoolean(); |
| |
| public RestHighLevelClient getConnection(ElasticsearchCoordinate esCoord) { |
| lock.readLock().lock(); |
| try { |
| if (isClosed.get()) { |
| throw new IllegalStateException("Already closed"); |
| } |
| |
| return clientMap.computeIfAbsent(esCoord, elasticsearchCoordinate -> { |
| LOG.info("Creating client {}", elasticsearchCoordinate); |
| return new RestHighLevelClient( |
| RestClient.builder( |
| new HttpHost(elasticsearchCoordinate.getHost(), |
| elasticsearchCoordinate.getPort(), |
| elasticsearchCoordinate.getScheme()) |
| )); |
| }); |
| } finally { |
| lock.readLock().unlock(); |
| } |
| } |
| |
| @Override |
| public void close() { |
| lock.writeLock().lock(); |
| try { |
| isClosed.set(true); |
| clientMap.values().forEach(restHighLevelClient -> { |
| try { |
| restHighLevelClient.close(); |
| } catch (IOException e) { |
| LOG.error("Error occurred while closing a connection", e); |
| } |
| }); |
| } finally { |
| lock.writeLock().unlock(); |
| } |
| } |
| } |