com.linuxbox.enkive.web.EnkiveServlet.java Source code

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Here is the source code for com.linuxbox.enkive.web.EnkiveServlet.java

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/*******************************************************************************
 * Copyright 2013 The Linux Box Corporation.
 *
 * This file is part of Enkive CE (Community Edition).
 *
 * Enkive CE is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * Enkive CE is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with Enkive CE. If not, see
 * <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package com.linuxbox.enkive.web;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.ApplicationContext;

import com.linuxbox.enkive.audit.AuditService;
import com.linuxbox.enkive.authentication.AuthenticationService;
import com.linuxbox.enkive.docsearch.DocSearchQueryService;
import com.linuxbox.enkive.docstore.DocStoreService;
import com.linuxbox.enkive.message.search.MessageSearchService;
import com.linuxbox.enkive.permissions.PermissionService;
import com.linuxbox.enkive.retriever.MessageRetrieverService;
import com.linuxbox.enkive.statistics.services.StatsClient;
import com.linuxbox.enkive.workspace.WorkspaceService;
import com.linuxbox.util.spring.ApplicationContextProvider;

public class EnkiveServlet extends HttpServlet {
    private static final long serialVersionUID = 7532961482208890586L;

    protected static final Log LOGGER = LogFactory.getLog("com.linuxbox.enkive.web");

    protected ApplicationContext appContext;

    @Override
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        appContext = ApplicationContextProvider.getApplicationContext();
        LOGGER.trace("init -- servlet:" + this + "; appContext:" + appContext);
    }

    public DocSearchQueryService getDocSearchQueryService() {
        return appContext.getBean(DocSearchQueryService.class);
    }

    public DocStoreService getDocStoreService() {
        return appContext.getBean(DocStoreService.class);
    }

    public MessageRetrieverService getMessageRetrieverService() {
        return appContext.getBean("MessageRetrieverService", MessageRetrieverService.class);
    }

    public AuditService getAuditService() {
        return appContext.getBean("AuditLogService", AuditService.class);
    }

    public AuthenticationService getAuthenticationService() {
        return appContext.getBean(AuthenticationService.class);
    }

    public WorkspaceService getWorkspaceService() {
        return appContext.getBean("WorkspaceService", WorkspaceService.class);
    }

    public MessageSearchService getMessageSearchService() {
        return appContext.getBean("MessageSearchService", MessageSearchService.class);
    }

    public PermissionService getPermissionService() {
        return appContext.getBean(PermissionService.class);
    }

    public StatsClient getStatsClient() {
        LOGGER.trace("getStatsClient -- enkiveServlet:" + this + "; appContext:" + appContext);
        return appContext.getBean("StatsClientBean", StatsClient.class);
    }

    /**
     * Helper function to make forwarding easier.
     * 
     * @param url
     * @param req
     * @param resp
     * @throws ServletException
     * @throws IOException
     */
    public void forward(String url, ServletRequest req, ServletResponse resp) throws ServletException, IOException {
        final RequestDispatcher dispatcher = req.getRequestDispatcher(url);
        dispatcher.forward(req, resp);
    }

    /**
     * Helper function to make error responding easier.
     * 
     * @param responseCode
     * @param errorMsg
     * @param resp
     * @throws ServletException
     * @throws IOException
     */
    public void respondError(int responseStatus, String errorMsg, HttpServletResponse resp) throws IOException {
        if (errorMsg != null && !errorMsg.isEmpty())
            resp.sendError(responseStatus, errorMsg);
        else
            resp.sendError(responseStatus);
    }
}