/**
* License Agreement for OpenSearchServer
* <p/>
* Copyright (C) 2008-2016 Emmanuel Keller / Jaeksoft
* <p/>
* http://www.open-search-server.com
* <p/>
* This file is part of OpenSearchServer.
* <p/>
* OpenSearchServer is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* <p/>
* OpenSearchServer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* <p/>
* You should have received a copy of the GNU General Public License
* along with OpenSearchServer.
* If not, see <http://www.gnu.org/licenses/>.
**/
package com.jaeksoft.searchlib.index;
import com.jaeksoft.searchlib.Logging;
import com.jaeksoft.searchlib.SearchLibException;
import com.jaeksoft.searchlib.crawler.file.process.fileInstances.swift.SwiftToken;
import com.jaeksoft.searchlib.crawler.file.process.fileInstances.swift.SwiftToken.AuthType;
import com.jaeksoft.searchlib.crawler.web.spider.HttpDownloader;
import com.jaeksoft.searchlib.util.LinkUtils;
import com.jaeksoft.searchlib.util.ReadWriteLock;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.NoSuchDirectoryException;
import org.json.JSONException;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;
public class IndexDirectory {
private Directory directory;
private final ReadWriteLock rwl = new ReadWriteLock();
protected IndexDirectory(File indexDir) throws IOException {
directory = FSDirectory.open(indexDir);
}
/**
* Create an index directory using an index remotely stored using the Object
* Storage API.
*
* The URI should be created like that:
* SWIFT://localhost?tenant=&container=&user=&password=&url=
*
* The parameters must be URL encoded as UTF-8
*
* @param uri
* @throws IOException
* @throws URISyntaxException
* @throws JSONException
* @throws SearchLibException
*/
protected IndexDirectory(final URI uri) throws IOException, URISyntaxException, JSONException, SearchLibException {
if ("SWIFT".equals(uri.getScheme())) {
HttpDownloader httpDownloader = new HttpDownloader(null, true, null, 600);
Map<String, String> parameters = LinkUtils.getUniqueQueryParameters(uri, "UTF-8");
String tenant = parameters.get("tenant");
String container = parameters.get("container");
String user = parameters.get("user");
String password = parameters.get("password");
String url = parameters.get("url");
SwiftToken token = new SwiftToken(httpDownloader, url, user, password, AuthType.KEYSTONE, tenant);
directory = new ObjectStorageDirectory(httpDownloader, token, container);
return;
}
throw new IOException("Unsupported protocol: " + uri);
}
public Directory getDirectory() {
rwl.r.lock();
try {
return directory;
} finally {
rwl.r.unlock();
}
}
public boolean isEmpty() throws IOException {
rwl.r.lock();
try {
return ArrayUtils.isEmpty(directory.listAll());
} catch (NoSuchDirectoryException e) {
return true;
} finally {
rwl.r.unlock();
}
}
public void unlock() {
rwl.w.lock();
try {
if (directory == null)
return;
if (!IndexWriter.isLocked(directory))
return;
IndexWriter.unlock(directory);
} catch (Exception e) {
Logging.warn(e);
} finally {
rwl.w.unlock();
}
}
public void close() {
rwl.w.lock();
try {
if (directory == null)
return;
try {
directory.close();
} catch (IOException e) {
Logging.warn(e.getMessage(), e);
}
directory = null;
} finally {
rwl.w.unlock();
}
}
}