org.apache.cxf.fediz.service.idp.MetadataServlet.java Source code

Introduction

Here is the source code for org.apache.cxf.fediz.service.idp.MetadataServlet.java

Source

/**
 * 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.cxf.fediz.service.idp;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.w3c.dom.Document;
import org.apache.cxf.fediz.service.idp.domain.Idp;
import org.apache.cxf.fediz.service.idp.service.ConfigService;
import org.apache.cxf.fediz.service.idp.util.MetadataWriter;
import org.apache.wss4j.common.util.DOM2Writer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

public class MetadataServlet extends HttpServlet {

    public static final String PARAM_REALM = "realm";

    private static final Logger LOG = LoggerFactory.getLogger(MetadataServlet.class);
    private static final long serialVersionUID = 1L;

    private ApplicationContext applicationContext;
    private String realm;

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/xml; charset=utf-8");
        PrintWriter out = response.getWriter();
        try {
            ConfigService cs = (ConfigService) getApplicationContext().getBean("config");
            Idp idpConfig = cs.getIDP(realm);
            LOG.debug(idpConfig.toString());
            MetadataWriter mw = new MetadataWriter();
            Document metadata = mw.getMetaData(idpConfig);
            out.write(DOM2Writer.nodeToString(metadata));
        } catch (Exception ex) {
            LOG.error("Failed to get metadata document: ", ex);
            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        }
    }

    @Override
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        realm = config.getInitParameter(PARAM_REALM);
        if (realm == null || realm.length() == 0) {
            throw new ServletException("Servlet parameter '" + PARAM_REALM + "' not defined");
        }
    }

    public ApplicationContext getApplicationContext() {
        if (applicationContext == null) {
            LOG.debug(this.getServletContext().toString());
            applicationContext = WebApplicationContextUtils.getWebApplicationContext(this.getServletContext());
        }
        return applicationContext;
    }

}