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/**
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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.qpid.server.management.plugin.servlet.rest;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.qpid.server.model.Broker;
import org.apache.qpid.server.model.ConfiguredObject;
import org.apache.qpid.server.model.Model;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.map.SerializationConfig;
public class StructureServlet extends AbstractServlet
{
public StructureServlet()
{
super();
}
public StructureServlet(Broker broker)
{
super(broker);
}
@Override
protected void onGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
{
response.setContentType("application/json");
response.setStatus(HttpServletResponse.SC_OK);
response.setHeader("Cache-Control","no-cache");
response.setHeader("Pragma","no-cache");
response.setDateHeader ("Expires", 0);
Map<String,Object> structure = generateStructure(getBroker(), Broker.class);
final PrintWriter writer = response.getWriter();
ObjectMapper mapper = new ObjectMapper();
mapper.configure(SerializationConfig.Feature.INDENT_OUTPUT, true);
mapper.writeValue(writer, structure);
response.setStatus(HttpServletResponse.SC_OK);
}
private Map<String, Object> generateStructure(ConfiguredObject object, Class<? extends ConfiguredObject> clazz)
{
Map<String, Object> structure = new LinkedHashMap<String, Object>();
structure.put("id", object.getId());
structure.put("name", object.getName());
for(Class<? extends ConfiguredObject> childClass : Model.getInstance().getChildTypes(clazz))
{
Collection<? extends ConfiguredObject> children = object.getChildren(childClass);
if(children != null)
{
List<Map<String, Object>> childObjects = new ArrayList<Map<String, Object>>();
for(ConfiguredObject child : children)
{
childObjects.add(generateStructure(child, childClass));
}
if(!childObjects.isEmpty())
{
structure.put(pluralize(childClass),childObjects);
}
}
}
return structure;
}
private String pluralize(Class<? extends ConfiguredObject> childClass)
{
String name = childClass.getSimpleName().toLowerCase();
return name + (name.endsWith("s") ? "es" : "s");
}
}
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