| /** |
| * 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.metamodel.elasticsearch.nativeclient; |
| |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| |
| import org.apache.metamodel.ConnectionException; |
| import org.apache.metamodel.DataContext; |
| import org.apache.metamodel.factory.DataContextFactory; |
| import org.apache.metamodel.factory.DataContextProperties; |
| import org.apache.metamodel.factory.ResourceFactoryRegistry; |
| import org.apache.metamodel.factory.UnsupportedDataContextPropertiesException; |
| import org.apache.metamodel.util.SimpleTableDef; |
| import org.elasticsearch.client.Client; |
| import org.elasticsearch.client.transport.TransportClient; |
| import org.elasticsearch.common.settings.Settings; |
| import org.elasticsearch.common.transport.InetSocketTransportAddress; |
| import org.elasticsearch.transport.client.PreBuiltTransportClient; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Factory for ElasticSearch data context of native type. |
| * |
| * The factory will activate when DataContext type is specified as |
| * "elasticsearch", "es-node", "elasticsearch-node", "es-transport", |
| * "elasticsearch-transport". |
| * |
| * This factory is configured with the following properties: |
| * |
| * <ul> |
| * <li>clientType (needed if datacontext type is just "elasticsearch" - must be |
| * either "transport" or "node")</li> |
| * <li>hostname (if clientType is "transport")</li> |
| * <li>port (if clientType is "transport")</li> |
| * <li>database (index name)</li> |
| * <li>cluster</li> |
| * <li>username (optional, only available if clientType is "transport")</li> |
| * <li>password (optional, only available if clientType is "transport")</li> |
| * <li>ssl (optional, only available if clientType is "transport")</li> |
| * <li>keystorePath (optional, only available if clientType is "transport")</li> |
| * <li>keystorePassword (optional, only available if clientType is "transport") |
| * </li> |
| * </ul> |
| */ |
| public class ElasticSearchDataContextFactory implements DataContextFactory { |
| private static final Logger logger = LoggerFactory.getLogger(ElasticSearchDataContextFactory.class); |
| |
| @Override |
| public boolean accepts(DataContextProperties properties, ResourceFactoryRegistry resourceFactoryRegistry) { |
| switch (properties.getDataContextType()) { |
| case "elasticsearch": |
| case "es-node": |
| case "elasticsearch-node": |
| case "es-transport": |
| case "elasticsearch-transport": |
| return acceptsInternal(properties); |
| } |
| return false; |
| } |
| |
| private boolean acceptsInternal(DataContextProperties properties) { |
| final String clientType = getClientType(properties); |
| if (clientType == null) { |
| return false; |
| } |
| if (!"node".equals(clientType)) { |
| if (properties.getHostname() == null || properties.getPort() == null) { |
| return false; |
| } |
| } |
| if (getIndex(properties) == null) { |
| return false; |
| } |
| if (getCluster(properties) == null) { |
| return false; |
| } |
| return true; |
| } |
| |
| private String getClientType(DataContextProperties properties) { |
| switch (properties.getDataContextType()) { |
| case "elasticsearch-node": |
| case "es-node": |
| return "node"; |
| case "elasticsearch-transport": |
| case "es-transport": |
| return "transport"; |
| } |
| final String clientType = (String) properties.toMap().get("clientType"); |
| return clientType; |
| } |
| |
| private String getIndex(DataContextProperties properties) { |
| final String databaseName = properties.getDatabaseName(); |
| if (databaseName == null) { |
| return (String) properties.toMap().get("index"); |
| } |
| return databaseName; |
| } |
| |
| private String getCluster(DataContextProperties properties) { |
| return (String) properties.toMap().get("cluster"); |
| } |
| |
| @Override |
| public DataContext create(DataContextProperties properties, ResourceFactoryRegistry resourceFactoryRegistry) |
| throws UnsupportedDataContextPropertiesException, ConnectionException { |
| final Client client; |
| client = createTransportClient(properties); |
| final String indexName = getIndex(properties); |
| final SimpleTableDef[] tableDefinitions = properties.getTableDefs(); |
| return new ElasticSearchDataContext(client, indexName, tableDefinitions); |
| } |
| |
| private Client createTransportClient(DataContextProperties properties) { |
| final Settings settings = Settings.builder().put().put("name", "MetaModel").put("cluster.name", getCluster(properties)).build(); |
| final TransportClient client = new PreBuiltTransportClient(settings); |
| try { |
| client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(properties.getHostname()), properties.getPort())); |
| } catch (UnknownHostException e) { |
| logger.warn("no IP address for the host with name \"{}\" could be found.", properties.getHostname()); |
| } |
| return client; |
| } |
| |
| } |