| /** |
| * 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 com.datatorrent.contrib.solr; |
| |
| import java.io.IOException; |
| import java.util.Queue; |
| import java.util.concurrent.ArrayBlockingQueue; |
| |
| import javax.validation.constraints.NotNull; |
| |
| import org.apache.solr.client.solrj.SolrServer; |
| import org.apache.solr.client.solrj.SolrServerException; |
| import org.apache.solr.client.solrj.response.UpdateResponse; |
| import org.apache.solr.common.SolrException; |
| import org.apache.solr.common.SolrInputDocument; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.datatorrent.api.Context.OperatorContext; |
| import com.datatorrent.lib.db.AbstractStoreOutputOperator; |
| import com.datatorrent.lib.db.Connectable; |
| |
| /** |
| * This is a base implementation of a Solr output operator, which adds data to Solr Server. Subclasses should |
| * implement the methods convertTuple. |
| * <p> |
| * Compile time checks:<br> |
| * Class derived from this has to implement the abstract method convertTuple() <br> |
| * <br> |
| * Run time checks:<br> |
| * None<br> |
| * <br> |
| * Benchmarks:<br> |
| * TBD<br> |
| * <br> |
| * |
| * Shipped jars with this operator:<br> |
| * <b>org.apache.solr.client.solrj.SolrServer.class</b> Solrj - Solr Java Client <br> |
| * <br> |
| * </p> |
| * |
| * @displayName Abstract Solr Output |
| * @category Search Engine |
| * @tags output operator |
| * |
| * @since 2.0.0 |
| */ |
| public abstract class AbstractSolrOutputOperator<T, S extends Connectable> extends AbstractStoreOutputOperator<T, S> |
| { |
| private static final Logger logger = LoggerFactory.getLogger(AbstractSolrOutputOperator.class); |
| @NotNull |
| protected SolrServerConnector solrServerConnector; |
| private static final int DEFAULT_BUFFER_SIZE = 1024 * 1024; |
| private int bufferSize = DEFAULT_BUFFER_SIZE; |
| private transient Queue<SolrInputDocument> docBuffer; |
| |
| @Override |
| public void processTuple(T tuple) |
| { |
| if (docBuffer.size() >= bufferSize) { |
| processTuples(); |
| } |
| SolrInputDocument solrDocument = convertTuple(tuple); |
| if (solrDocument != null) { |
| docBuffer.add(solrDocument); |
| } |
| }; |
| |
| /** |
| * Converts the object into Solr document format |
| * |
| * @param object to be stored to Solr Server |
| * @return |
| */ |
| public abstract SolrInputDocument convertTuple(T tuple); |
| |
| @Override |
| public void setup(OperatorContext context) |
| { |
| docBuffer = new ArrayBlockingQueue<SolrInputDocument>(bufferSize); |
| try { |
| solrServerConnector.connect(); |
| } catch (Exception ex) { |
| throw new RuntimeException("Unable to connect to Solr server", ex); |
| } |
| } |
| |
| @Override |
| public void teardown() |
| { |
| docBuffer.clear(); |
| solrServerConnector.getSolrServer().shutdown(); |
| } |
| |
| @Override |
| public void beginWindow(long windowId) |
| { |
| } |
| |
| @Override |
| public void endWindow() |
| { |
| processTuples(); |
| } |
| |
| private void processTuples() |
| { |
| try { |
| SolrServer solrServer = solrServerConnector.getSolrServer(); |
| solrServer.add(docBuffer); |
| UpdateResponse response = solrServer.commit(); |
| if (response.getStatus() != 0) { |
| throw new RuntimeException("Unable to add data to solr server"); |
| } |
| logger.debug("Submitted documents batch of size " + docBuffer.size() + " to Solr server."); |
| docBuffer.clear(); |
| } catch (SolrServerException ex) { |
| throw new RuntimeException("Unable to insert documents during process", ex); |
| } catch (SolrException ex) { |
| throw new RuntimeException("Unable to insert documents during process", ex); |
| } catch (IOException iox) { |
| throw new RuntimeException("Unable to insert documents during process", iox); |
| } |
| } |
| |
| public int getBufferSize() |
| { |
| return bufferSize; |
| } |
| |
| public void setBufferSize(int bufferSize) |
| { |
| this.bufferSize = bufferSize; |
| } |
| |
| public SolrServerConnector getSolrServerConnector() |
| { |
| return solrServerConnector; |
| } |
| |
| public void setSolrServerConnector(SolrServerConnector solrServerConnector) |
| { |
| this.solrServerConnector = solrServerConnector; |
| } |
| |
| } |