/**
* Copyright T Jake Luciani
*
* 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 solandra;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.solr.core.SolandraCoreContainer;
import org.apache.solr.core.CoreContainer.Initializer;
import org.apache.solr.request.*;
import org.apache.solr.response.SolrQueryResponse;
import org.apache.solr.servlet.SolrDispatchFilter;
import org.apache.solr.servlet.cache.Method;
public class SolandraDispatchFilter extends SolrDispatchFilter
{
private static final String schemaPrefix = "/schema";
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException
{
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse resp = (HttpServletResponse) response;
String indexName = "";
String resourceName = "";
String path = req.getServletPath();
if (req.getPathInfo() != null)
{
// this lets you handle /update/commit when /update is a servlet
path += req.getPathInfo();
}
if (path.startsWith(schemaPrefix))
{
path = path.substring(schemaPrefix.length());
// otherwise, we should find a index from the path
int idx = path.indexOf("/", 1);
if (idx > 1)
{
// try to get the index as a request parameter first
indexName = path.substring(1, idx);
resourceName = path.substring(idx+1);
}
else
{
indexName = path.substring(1);
}
// REST
String method = req.getMethod().toUpperCase();
if (method.equals("GET"))
{
try
{
String resource = "";
if(resourceName.isEmpty() || resourceName.equalsIgnoreCase("schema.xml"))
{
resource = SolandraCoreContainer.getCoreMetaInfo(indexName);
response.setContentType("text/xml");
}
else
{
resource = ByteBufferUtil.string(SolandraCoreContainer.readCoreResource(indexName, resourceName));
}
PrintWriter out = resp.getWriter();
out.print(resource);
}
catch (IOException e)
{
resp.sendError(404);
}
return;
}
if (method.equals("POST") || method.equals("PUT"))
{
try
{
BufferedReader rd = new BufferedReader(new InputStreamReader(req.getInputStream()));
String line;
String resource = "";
while ((line = rd.readLine()) != null)
{
resource += line + "\n";
}
if(resourceName.isEmpty() || resourceName.equalsIgnoreCase("schema.xml"))
{
SolandraCoreContainer.writeSchema(indexName, resource);
}
else
{
SolandraCoreContainer.writeCoreResource(indexName, resourceName, resource);
}
}
catch (IOException e)
{
resp.sendError(500);
}
return;
}
}
SolandraCoreContainer.activeRequest.set(req);
super.doFilter(request, response, chain);
}
@Override
protected Initializer createInitializer()
{
SolandraInitializer init = new SolandraInitializer();
return init;
}
@Override
protected void execute(HttpServletRequest req, SolrRequestHandler handler, SolrQueryRequest sreq,
SolrQueryResponse rsp)
{
String path = req.getServletPath();
if (req.getPathInfo() != null)
{
// this lets you handle /update/commit when /update is a servlet
path += req.getPathInfo();
}
if (pathPrefix != null && path.startsWith(pathPrefix))
{
path = path.substring(pathPrefix.length());
}
int idx = path.indexOf("/", 1);
if (idx > 1)
{
// try to get the corename as a request parameter first
sreq.getContext().put("solandra-index", path.substring(1, idx));
}
super.execute(req, handler, sreq, rsp);
}
private void writeResponse(SolrQueryResponse solrRsp, ServletResponse response, QueryResponseWriter responseWriter,
SolrQueryRequest solrReq, Method reqMethod) throws IOException
{
if (solrRsp.getException() != null)
{
sendError((HttpServletResponse) response, solrRsp.getException());
}
else
{
// Now write it out
response.setContentType(responseWriter.getContentType(solrReq, solrRsp));
if (Method.HEAD != reqMethod)
{
if (responseWriter instanceof BinaryQueryResponseWriter)
{
BinaryQueryResponseWriter binWriter = (BinaryQueryResponseWriter) responseWriter;
binWriter.write(response.getOutputStream(), solrReq, solrRsp);
}
else
{
PrintWriter out = response.getWriter();
responseWriter.write(out, solrReq, solrRsp);
}
}
// else http HEAD request, nothing to write out, waited this long
// just to get ContentType
}
}
}