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/**
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* '$RCSfile$'
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* Purpose: A class that gets Accession Number, check for uniqueness
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* and register it into db
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* Copyright: 2000 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Jivka Bojilova, Matt Jones
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*
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* '$Author: tao $'
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* '$Date: 2013-04-19 17:47:14 -0700 (Fri, 19 Apr 2013) $'
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* '$Revision: 7595 $'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat.common;
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import java.io.File;
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import java.io.IOException;
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import javax.xml.parsers.ParserConfigurationException;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.solr.client.solrj.SolrServer;
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import org.apache.solr.client.solrj.embedded.EmbeddedSolrServer;
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import org.apache.solr.client.solrj.impl.CommonsHttpSolrServer;
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import org.apache.solr.core.CoreContainer;
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import org.dataone.configuration.Settings;
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import org.dataone.service.exceptions.UnsupportedType;
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import org.xml.sax.SAXException;
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/**
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* A factory for creating SolrServer implementations based on
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* configuration in Settings.java
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* Options are as follows.
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*
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* Embedded (default):
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* solr.server.classname=org.apache.solr.client.solrj.embedded.EmbeddedSolrServer
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* solr.homeDir=/path/to/solr/home
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*
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* HTTP:
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* solr.server.classname=org.apache.solr.client.solrj.impl.CommonsHttpSolrServer
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* solr.endpoint=http://endpoint/to/solr/service
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*
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* @author leinfelder + tao
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*
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*/
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public class SolrServerFactory {
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public static final String SOLR_HOME_PROPERTY_NAME = "solr.homeDir";
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public static final String SOLR_CONFIG_FILE_NAME_PROPERTY_NAME = "solr.configFileName";
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public static final String SOLR_COLLECTION_NAME_PROPERTY_NAME = "solr.collectionName";
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public static final String SOLR_SERVER_CLASSNAME_PROPERTY_NAME = "solr.server.classname";
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public static final String SOLR_ENPOINT_PROPERTY_NAME = "solr.endpoint";
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private static final String EMBEDDEDSERVERCLASS = "org.apache.solr.client.solrj.embedded.EmbeddedSolrServer";
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private static final String HTTPSERVERCLASS = "org.apache.solr.client.solrj.impl.CommonsHttpSolrServer";
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public static Log log = LogFactory.getLog(SolrServerFactory.class);
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private static CoreContainer coreContainer = null;
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private static String collectionName = null;
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private static SolrServer solrServer = null;
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//private static String solrServerBaseURL = null;
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public static SolrServer createSolrServer() throws ParserConfigurationException, IOException, SAXException, UnsupportedType {
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if(solrServer == null) {
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String className = Settings.getConfiguration().getString(SOLR_SERVER_CLASSNAME_PROPERTY_NAME);
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if (className != null && className.equals(EMBEDDEDSERVERCLASS)) {
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generateEmbeddedServer();
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} else if (className != null && className.equals(HTTPSERVERCLASS)) {
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String solrServerBaseURL = Settings.getConfiguration().getString(SOLR_ENPOINT_PROPERTY_NAME);
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solrServer = new CommonsHttpSolrServer(solrServerBaseURL);
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} else {
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throw new UnsupportedType("0000","SolrServerFactory.createSolrServer - MetacatIndex doesn't support this solr server type: "+className);
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}
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}
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return solrServer;
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}
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private static void generateEmbeddedServer() throws ParserConfigurationException, IOException, SAXException {
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String solrHomeDir = Settings.getConfiguration().getString(SOLR_HOME_PROPERTY_NAME);
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log.info("The configured solr home from properties is " + solrHomeDir);
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String configFileName = Settings.getConfiguration().getString(SOLR_CONFIG_FILE_NAME_PROPERTY_NAME);
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File configFile = new File(solrHomeDir, configFileName);
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coreContainer = new CoreContainer(solrHomeDir, configFile);
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coreContainer.load(solrHomeDir, configFile);
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collectionName = getCollectionName();
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solrServer = new EmbeddedSolrServer(coreContainer, collectionName);
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}
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/**
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* Get the the CoreContainer of the generated EmbeddedSolrServer.
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* @return it may return null if the solr is configured as the SolrHttpServer
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* @throws SAXException
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* @throws IOException
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* @throws ParserConfigurationException
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* @throws UnsupportedType
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* @throws Exception
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*/
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public static CoreContainer getCoreContainer() throws UnsupportedType, ParserConfigurationException, IOException, SAXException {
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if(coreContainer == null) {
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createSolrServer();
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}
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return coreContainer;
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}
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/**
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* Get the CollectionName of the generated EmbeddedSolrServer. It can be null if the solr is configured as a SolrHttpServer
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* @return
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*/
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public static String getCollectionName() {
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if(collectionName == null) {
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collectionName = Settings.getConfiguration().getString(SOLR_COLLECTION_NAME_PROPERTY_NAME);
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}
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return collectionName;
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}
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}
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