/*
* 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.jackrabbit.oak.plugins.index.solr.embedded;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.jackrabbit.mk.util.IOUtils;
import org.apache.jackrabbit.oak.plugins.index.solr.configuration.SolrServerConfiguration;
import org.apache.jackrabbit.oak.plugins.index.solr.configuration.SolrServerConfigurationDefaults;
import org.apache.jackrabbit.oak.plugins.index.solr.server.SolrServerProvider;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.embedded.EmbeddedSolrServer;
import org.apache.solr.client.solrj.embedded.JettySolrRunner;
import org.apache.solr.client.solrj.impl.HttpSolrServer;
import org.apache.solr.core.CoreContainer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Default implementation of {@link SolrServerProvider} which uses an
* {@link EmbeddedSolrServer} configured as per passed {@link SolrServerConfiguration}.
*/
public class EmbeddedSolrServerProvider implements SolrServerProvider {
private final Logger log = LoggerFactory.getLogger(getClass());
private final SolrServerConfiguration solrServerConfiguration;
public EmbeddedSolrServerProvider(SolrServerConfiguration solrServerConfiguration) {
this.solrServerConfiguration = solrServerConfiguration;
}
private SolrServer solrServer;
@Deactivate
protected void deactivate() throws Exception {
if (solrServer != null) {
solrServer.shutdown();
}
}
private SolrServer createSolrServer() throws Exception {
String solrHomePath = solrServerConfiguration.getSolrHomePath();
String coreName = solrServerConfiguration.getCoreName();
String solrConfigPath = solrServerConfiguration.getSolrConfigPath();
SolrServerConfiguration.HttpConfiguration httpConfiguration = solrServerConfiguration.getHttpConfiguration();
if (solrConfigPath != null && solrHomePath != null && coreName != null) {
checkSolrConfiguration(solrHomePath, solrConfigPath, coreName);
if (httpConfiguration != null) {
if (log.isInfoEnabled()) {
log.info("starting embedded Solr server with http bindings");
}
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(JettySolrRunner.class.getClassLoader());
Integer httpPort = httpConfiguration.getHttpPort();
String context = httpConfiguration.getContext();
JettySolrRunner jettySolrRunner = null;
try {
jettySolrRunner = new JettySolrRunner(solrHomePath, context, httpPort, "solrconfig.xml", "schema.xml", true);
if (log.isInfoEnabled()) {
log.info("Jetty runner instantiated");
}
jettySolrRunner.start(true);
if (log.isInfoEnabled()) {
log.info("Jetty runner started");
}
} catch (Exception t) {
if (log.isErrorEnabled()) {
log.error("an error has occurred while starting Solr Jetty", t);
}
} finally {
if (jettySolrRunner != null && !jettySolrRunner.isRunning()) {
try {
jettySolrRunner.stop();
if (log.isInfoEnabled()) {
log.info("Jetty runner stopped");
}
} catch (Exception e) {
if (log.isErrorEnabled()) {
log.error("error while stopping the Jetty runner", e);
}
}
}
Thread.currentThread().setContextClassLoader(classLoader);
}
if (log.isInfoEnabled()) {
log.info("starting HTTP Solr server");
}
HttpSolrServer httpSolrServer = new HttpSolrServer(new StringBuilder(
SolrServerConfigurationDefaults.LOCAL_BASE_URL).append(':')
.append(httpPort).append(context).append('/').append(coreName)
.toString());
return httpSolrServer;
} else {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(CoreContainer.class.getClassLoader());
CoreContainer coreContainer = new CoreContainer(solrHomePath);
try {
coreContainer.load(solrHomePath, new File(solrConfigPath));
} finally {
Thread.currentThread().setContextClassLoader(classLoader);
}
EmbeddedSolrServer server = new EmbeddedSolrServer(coreContainer, coreName);
if (server.ping().getStatus() == 0) {
return server;
} else {
throw new IOException("the embedded Solr server is not alive");
}
}
} else {
throw new Exception("SolrServer configuration proprties not set");
}
}
private void checkSolrConfiguration(String solrHomePath, String solrConfigPath, String coreName) throws IOException {
// check if solrHomePath exists
File solrHomePathFile = new File(solrHomePath);
if (!solrHomePathFile.exists()) {
if (!solrHomePathFile.mkdirs()) {
throw new IOException("could not create solrHomePath directory");
} else {
// copy all the needed files to the just created directory
copy("/solr/solr.xml", solrHomePath);
copy("/solr/zoo.cfg", solrHomePath);
if (!new File(solrHomePath + "/" + coreName + "/conf").mkdirs()) {
throw new IOException("could not create nested core directory in solrHomePath");
}
String coreDir = solrHomePath + "/" + coreName + "/conf/";
copy("/solr/oak/conf/currency.xml", coreDir);
copy("/solr/oak/conf/schema.xml", coreDir);
copy("/solr/oak/conf/solrconfig.xml", coreDir);
}
} else if (!solrHomePathFile.isDirectory()) {
throw new IOException("a non directory file with the specified name already exists for the given solrHomePath '"+solrHomePath);
}
// TODO : improve this check
// check if solrConfigPath exists
// File solrConfigPathFile = new File(solrConfigPath);
// if (!solrConfigPathFile.exists()) {
// if (solrConfigPathFile.createNewFile()) {
// copy("/solr/solr.xml", solrConfigPathFile.getAbsolutePath());
// }
// }
// check if the a core with the given coreName exists
// TODO : improve this check
String[] files = new File(solrHomePath).list();
Arrays.sort(files);
if (Arrays.binarySearch(files, coreName) < 0) {
throw new IOException("could not find a directory with the coreName '" + coreName
+ "' in the solrHomePath '" + solrHomePath + "'");
}
}
private void copy(String resource, String dir) throws IOException {
String fileName = dir + resource.substring(resource.lastIndexOf("/"));
File outputFile = new File(fileName);
if (outputFile.createNewFile()) {
InputStream inputStream = null;
FileOutputStream outputStream = null;
try {
inputStream = getClass().getResourceAsStream(resource);
outputStream = new FileOutputStream(outputFile);
IOUtils.copy(inputStream, outputStream);
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (Exception e) {
// do nothing
}
}
if (outputStream != null) {
try {
outputStream.close();
} catch (Exception e) {
// do nothing
}
}
}
}
}
@Override
public SolrServer getSolrServer() throws Exception {
synchronized (this) {
if (solrServer == null) {
solrServer = createSolrServer();
}
}
return solrServer;
}
}