uk.ac.gla.terrier.probos.master.webapp.ConfServlet.java Source code

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Here is the source code for uk.ac.gla.terrier.probos.master.webapp.ConfServlet.java

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/**
 * Copyright (c) 2016, University of Glasgow. All Rights Reserved.
 *
 * Cloudera, Inc. 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
 *
 * This software 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 uk.ac.gla.terrier.probos.master.webapp;

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.util.List;
import java.util.Map.Entry;

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

import org.apache.hadoop.conf.Configuration;

import uk.ac.gla.terrier.probos.api.PBSClient;
import uk.ac.gla.terrier.probos.common.BaseServlet;
import uk.ac.gla.terrier.probos.master.ProbosApplicationMasterServiceImpl;

public class ConfServlet extends BaseServlet {

    private static final long serialVersionUID = 1L;

    static final String NAME = "conf";

    ProbosApplicationMasterServiceImpl pams;

    public ConfServlet(String _uri, List<Entry<String, HttpServlet>> _servletNameSpace, PBSClient _pbsClient,
            ProbosApplicationMasterServiceImpl _pams) throws Exception {
        super(NAME, _uri, _servletNameSpace, _pbsClient);
        pams = _pams;
    }

    @Override
    protected void getPreformattedContent(HttpServletRequest req, HttpServletResponse resp, PrintStream ps)
            throws ServletException, IOException {

        ps.println("<code class=\"json\">");
        Configuration.dumpConfiguration(pams.getConf(), new OutputStreamWriter(ps));
        ps.println("</code>");
    }

}