com.searchbox.engine.solr.EmbeddedSolr.java Source code

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Here is the source code for com.searchbox.engine.solr.EmbeddedSolr.java

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/*******************************************************************************
 * Copyright Searchbox - http://www.searchbox.com
 * 
 * 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 com.searchbox.engine.solr;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;

import org.apache.commons.io.FileUtils;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.embedded.EmbeddedSolrServer;
import org.apache.solr.core.CoreContainer;
import org.apache.solr.core.CoreDescriptor;
import org.apache.solr.core.SolrCore;
import org.apache.solr.schema.CopyField;
import org.apache.solr.schema.IndexSchema;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;

import com.searchbox.core.SearchAttribute;
import com.searchbox.core.dm.Collection;
import com.searchbox.core.dm.Field;

public class EmbeddedSolr extends SolrSearchEngine implements InitializingBean, DisposableBean {

    private static final Logger LOGGER = LoggerFactory.getLogger(EmbeddedSolr.class);

    @SearchAttribute
    private String solrHome;

    @SearchAttribute
    private String dataDir;

    private static CoreContainer coreContainer = null;

    public EmbeddedSolr() {
        super();
    }

    public EmbeddedSolr(String name, String solrHome) {
        super(name);
        this.solrHome = solrHome;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        if (EmbeddedSolr.coreContainer == null) {
            try {
                LOGGER.info("Embedded solr.solr.home is: " + this.solrHome);
                EmbeddedSolr.coreContainer = new CoreContainer(this.solrHome);
                EmbeddedSolr.coreContainer.load();
            } catch (Exception e) {
                LOGGER.error("Could not start search engine", e);
            }
        }
    }

    @Override
    public void destroy() throws Exception {
        coreContainer.shutdown();
    }

    @Override
    protected SolrServer getSolrServer(Collection collection) {
        return new EmbeddedSolrServer(coreContainer, collection.getName());
    }

    public String getDataDir() {
        return dataDir;
    }

    public void setDataDir(String dataDir) {
        this.dataDir = dataDir;
    }

    public String getSolrHome() {
        return solrHome;
    }

    public void setSolrHome(String solrHome) {
        this.solrHome = solrHome;
    }

    @Override
    protected boolean updateDataModel(Collection collection, Map<Field, Set<String>> copyFields) {
        for (Entry<Field, Set<String>> copyField : copyFields.entrySet()) {
            this.addCopyFields(collection, copyField.getKey(), copyField.getValue());
        }
        return true;
    }

    private boolean addCopyFields(Collection collection, Field field, Set<String> copyFields) {
        SolrCore core = coreContainer.getCore(collection.getName());
        IndexSchema schema = core.getLatestSchema();

        for (CopyField copyField : schema.getCopyFieldsList(field.getKey())) {
            copyFields.remove(copyField.getDestination().getName());
        }

        Map<String, java.util.Collection<String>> copyFieldsMap = new HashMap<String, java.util.Collection<String>>();
        copyFieldsMap.put(field.getKey(), copyFields);
        schema = schema.addCopyFields(copyFieldsMap);

        core.setLatestSchema(schema);

        return true;
    }

    @Override
    public void reloadEngine(Collection collection) {
        try {
            coreContainer.reload(collection.getName());
        } catch (Exception e) {
            LOGGER.warn(e.getMessage());
        }
    }

    @Override
    public void register(Collection collection) {

        String coreInstanceDir = this.solrHome;

        Properties properties = new Properties();

        if (this.dataDir != null) {
            File dataDir = new File(this.dataDir);
            if (dataDir.exists()) {
                try {
                    FileUtils.deleteDirectory(dataDir);
                } catch (IOException e) {
                    LOGGER.error("Could not delete DataDir: " + dataDir);
                }
            }
            properties.setProperty("dataDir", this.dataDir);
        } else {
            properties.setProperty("dataDir", coreInstanceDir + "/" + collection.getName() + "/data/");
        }

        CoreDescriptor dcore = new CoreDescriptor(coreContainer, collection.getName(), coreInstanceDir, properties);

        try {
            SolrCore core = coreContainer.create(dcore);
            coreContainer.register(core, false);

            LOGGER.info("Solr Core config: " + core.getConfigResource());
            LOGGER.info("Solr SchemaResource: " + core.getSchemaResource());
            LOGGER.info("Solr Data dir: " + core.getDataDir());
        } catch (Exception e) {
            LOGGER.warn(e.getMessage());
        }
    }
}