org.fcrepo.indexer.webapp.FedoraIndexer.java Source code

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Here is the source code for org.fcrepo.indexer.webapp.FedoraIndexer.java

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/**
 * Copyright 2015 DuraSpace, Inc.
 *
 * Licensed 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.fcrepo.indexer.webapp;

import static org.slf4j.LoggerFactory.getLogger;
import org.slf4j.Logger;

import java.io.PrintWriter;
import java.net.URI;
import java.net.URISyntaxException;
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.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import org.fcrepo.indexer.IndexerGroup;

/**
 * Servlet to trigger reindexing.
 *
 * @author escowles
**/
public class FedoraIndexer extends HttpServlet {

    private static final Logger LOGGER = getLogger(IndexerGroup.class);
    private IndexerGroup indexer;

    /**
     * Servlet initialization.
    **/
    public void init(final ServletConfig sc) throws ServletException {
        super.init(sc);
        final WebApplicationContext ctx = WebApplicationContextUtils
                .getRequiredWebApplicationContext(getServletContext());
        indexer = (IndexerGroup) ctx.getBean(sc.getInitParameter("beanName"));
    }

    /**
     * Trigger reindexing.
    **/
    public void doPost(final HttpServletRequest request, final HttpServletResponse response)
            throws ServletException {
        final String recurParam = request.getParameter("recursive");
        final boolean recursive = (recurParam == null || recurParam.equals("true"));
        final String baseURI = request.getParameter("baseURI");

        String message;
        try {
            final URI uri = new URI(baseURI);
            indexer.reindex(uri, recursive);
            message = "Reindexing started";
        } catch (NullPointerException ex) {
            message = "Error: the baseURI parameter must be specified";
            response.setStatus(response.SC_BAD_REQUEST);
        } catch (URISyntaxException ex) {
            message = "Error: the baseURI is invalid";
            response.setStatus(response.SC_BAD_REQUEST);
        }

        try {
            response.setContentType("text/plain");
            final PrintWriter out = response.getWriter();
            out.println(message);
        } catch (Exception ex) {
            LOGGER.warn("Error sending output");
        }
    }
}