/**
* 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.solr.servlet;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.Writer;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.util.FastWriter;
import org.apache.solr.common.util.ContentStreamBase;
import org.apache.solr.core.SolrCore;
import org.apache.solr.core.SolrResourceLoader;
import org.apache.solr.request.SolrRequestHandler;
import org.apache.solr.response.QueryResponseWriter;
import org.apache.solr.response.BinaryQueryResponseWriter;
import org.apache.solr.response.SolrQueryResponse;
/**
* @deprecated Register a standard request handler instead of using this
* servlet. Add <requestHandler name="standard"
* class="solr.StandardRequestHandler" default="true"> to
* solrconfig.xml.
*/
@Deprecated
public class SolrServlet extends HttpServlet {
final Logger log = LoggerFactory.getLogger(SolrServlet.class);
private boolean hasMulticore = false;
private static final Charset UTF8 = Charset.forName("UTF-8");
@Override
public void init() throws ServletException {
log.info("SolrServlet.init()");
// Check if the "solr.xml" file exists -- if so, this is an invalid servlet
// (even if there is only one core...)
String instanceDir = SolrResourceLoader.locateInstanceDir();
File fconf = new File(instanceDir, "solr.xml");
hasMulticore = fconf.exists();
// we deliberately do not initialize a SolrCore because of SOLR-597
// https://issues.apache.org/jira/browse/SOLR-597
log.info("SolrServlet.init() done");
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request,response);
}
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
if( hasMulticore ) {
response.sendError( 400, "Missing solr core name in path" );
return;
}
final SolrCore core = SolrCore.getSolrCore();
SolrServletRequest solrReq = new SolrServletRequest(core, request);;
SolrQueryResponse solrRsp = new SolrQueryResponse();
try {
SolrRequestHandler handler = core.getRequestHandler(solrReq.getQueryType());
if (handler==null) {
log.warn("Unknown Request Handler '" + solrReq.getQueryType() +"' :" + solrReq);
throw new SolrException(SolrException.ErrorCode.BAD_REQUEST,"Unknown Request Handler '" + solrReq.getQueryType() + "'", true);
}
core.execute(handler, solrReq, solrRsp );
if (solrRsp.getException() == null) {
QueryResponseWriter responseWriter = core.getQueryResponseWriter(solrReq);
// Now write it out
final String ct = responseWriter.getContentType(solrReq, solrRsp);
// don't call setContentType on null
if (null != ct) response.setContentType(ct);
if (responseWriter instanceof BinaryQueryResponseWriter) {
BinaryQueryResponseWriter binWriter = (BinaryQueryResponseWriter) responseWriter;
binWriter.write(response.getOutputStream(), solrReq, solrRsp);
} else {
String charset = ContentStreamBase.getCharsetFromContentType(ct);
Writer out = (charset == null || charset.equalsIgnoreCase("UTF-8"))
? new OutputStreamWriter(response.getOutputStream(), UTF8)
: new OutputStreamWriter(response.getOutputStream(), charset);
out = new FastWriter(out);
responseWriter.write(out, solrReq, solrRsp);
out.flush();
}
} else {
Exception e = solrRsp.getException();
int rc=500;
if (e instanceof SolrException) {
rc=((SolrException)e).code();
}
sendErr(rc, SolrException.toStr(e), request, response);
}
} catch (SolrException e) {
if (!e.logged) SolrException.log(log,e);
sendErr(e.code(), SolrException.toStr(e), request, response);
} catch (Throwable e) {
SolrException.log(log,e);
sendErr(500, SolrException.toStr(e), request, response);
} finally {
// This releases the IndexReader associated with the request
solrReq.close();
}
}
final void sendErr(int rc, String msg, HttpServletRequest request, HttpServletResponse response) {
try {
// hmmm, what if this was already set to text/xml?
try{
response.setContentType(QueryResponseWriter.CONTENT_TYPE_TEXT_UTF8);
// response.setCharacterEncoding("UTF-8");
} catch (Exception e) {}
try{response.setStatus(rc);} catch (Exception e) {}
PrintWriter writer = response.getWriter();
writer.write(msg);
} catch (IOException e) {
SolrException.log(log,e);
}
}
}