edu.usu.sdl.openstorefront.service.manager.SolrManager.java Source code

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Here is the source code for edu.usu.sdl.openstorefront.service.manager.SolrManager.java

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/*
 * Copyright 2014 Space Dynamics Laboratory - Utah State University Research Foundation.
 *
 * Licensed 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 edu.usu.sdl.openstorefront.service.manager;

import edu.usu.sdl.openstorefront.common.manager.Initializable;
import edu.usu.sdl.openstorefront.common.manager.PropertiesManager;
import java.io.IOException;
import java.text.MessageFormat;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.lang3.StringUtils;
import org.apache.solr.client.solrj.SolrRequest;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.HttpSolrServer;
import org.apache.solr.common.util.NamedList;

/**
 * Handles the connection to Solr
 *
 * @author dshurtleff
 */
public class SolrManager implements Initializable {

    private static final Logger log = Logger.getLogger(SolrManager.class.getName());

    public static final String SOLR_ALL_QUERY = "*:*";
    public static final String SOLR_QUERY_SEPERATOR = ":";

    public static enum SolrAndOr {

        AND, OR
    }

    public static enum SolrEquals {

        EQUAL(""), NOTEQUAL("-");

        private final String solrOperator;

        private SolrEquals(String solrOperator) {
            this.solrOperator = solrOperator;
        }

        public String getSolrOperator() {
            return solrOperator;
        }
    }

    //Should reuse server to avoid leaks according to docs.
    private static SolrServer solrServer;

    public static void init() {
        String url = PropertiesManager.getValue(PropertiesManager.KEY_SOLR_URL);
        if (StringUtils.isNotBlank(url)) {
            log.log(Level.INFO, MessageFormat.format("Connecting to Solr at {0}", url));
            solrServer = new HttpSolrServer(url);

        } else {
            log.log(Level.WARNING, "Solr property (" + PropertiesManager.KEY_SOLR_URL
                    + ") is not set in openstorefront.properties. Search service unavailible. Using Mock");
            solrServer = new SolrServer() {

                @Override
                public NamedList<Object> request(SolrRequest request) throws SolrServerException, IOException {
                    NamedList<Object> results = new NamedList<>();
                    log.log(Level.INFO, "Mock Solr recieved request: " + request);
                    return results;
                }

                @Override
                public void shutdown() {
                    //do nothing
                }
            };
        }
    }

    public static void cleanup() {
        if (solrServer != null) {
            solrServer.shutdown();
        }
    }

    public static SolrServer getServer() {
        return solrServer;
    }

    @Override
    public void initialize() {
        SolrManager.init();
    }

    @Override
    public void shutdown() {
        SolrManager.cleanup();
    }

}