com.orange.mmp.mvc.bundle.Controller.java Source code

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Here is the source code for com.orange.mmp.mvc.bundle.Controller.java

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/*
 * Copyright (C) 2010 France Telecom
 *
 * 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.
 */
/*
 * Copyright (C) 2010 France Telecom
 *
 * 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 com.orange.mmp.mvc.bundle;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

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

import org.apache.commons.io.IOUtils;
import org.apache.commons.io.output.ByteArrayOutputStream;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.AbstractController;

import com.orange.mmp.core.data.Branch;
import com.orange.mmp.core.data.Mobile;
import com.orange.mmp.dao.DaoManagerFactory;
import com.orange.mmp.mvc.Constants;
import com.orange.mmp.widget.WidgetManager;

/**
 * Simple JavaBean-based servlet used to download resources contained in M4M on OSGI framework
 * @author milletth
 *
 */
public class Controller extends AbstractController {

    /**
     * The URL mapping for Bundles
     */
    private static String urlMapping;

    /* (non-Javadoc)
     * @see org.springframework.web.servlet.mvc.AbstractController#handleRequestInternal(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    @SuppressWarnings("unchecked")
    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        int pathInfoStart = request.getRequestURI().indexOf(urlMapping);
        if (pathInfoStart < 0) {
            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
            response.setContentLength(0);
            return null;
        }
        // Get user agent to obtain branchID
        String userAgent = request.getHeader(Constants.HTTP_HEADER_USERAGENT);
        Mobile mobile = new Mobile();
        mobile.setUserAgent(userAgent);
        Mobile[] mobiles = (Mobile[]) DaoManagerFactory.getInstance().getDaoManager().getDao("mobile").find(mobile);
        String branchId = null;//Constants.DEFAULT_BRANCH_ID;
        if (mobiles != null && mobiles.length > 0) {
            branchId = mobiles[0].getBranchId();
        } else {
            Branch branch = new Branch();
            branch.setDefault(true);
            Branch[] branches = (Branch[]) DaoManagerFactory.getInstance().getDaoManager().getDao("branch")
                    .find(branch);
            if (branches != null && branches.length > 0)
                branchId = branches[0].getId();
        }

        String pathInfo = request.getRequestURI().substring(pathInfoStart + urlMapping.length());
        String requestParts[] = pathInfo.split("/");
        String widgetId = null;
        String resourceName = null;
        InputStream input = null;

        if (requestParts.length > 2) {
            widgetId = requestParts[1];
            resourceName = pathInfo.substring(widgetId.length() + 2);
        } else {
            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
            response.setContentLength(0);
            return null;
        }

        input = WidgetManager.getInstance().getWidgetResource(resourceName, widgetId, branchId);

        if (input == null) {
            response.setStatus(HttpServletResponse.SC_NOT_FOUND);
            response.setContentLength(0);
        } else {
            ByteArrayOutputStream resourceBuffer = new ByteArrayOutputStream();
            OutputStream output = response.getOutputStream();
            try {
                IOUtils.copy(input, resourceBuffer);
                response.setContentLength(resourceBuffer.size());
                resourceBuffer.writeTo(output);
            } catch (IOException ioe) {
                response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
                response.setContentLength(0);
            } finally {
                if (input != null)
                    input.close();
                if (output != null)
                    output.close();
                if (resourceBuffer != null)
                    resourceBuffer.close();
            }
        }
        return null;
    }

    /**
     * @return the urlMapping
     */
    public static String getUrlMapping() {
        return urlMapping;
    }

    /**
     * @param urlMapping the urlMapping to set
     */
    public void setUrlMapping(String urlMapping) {
        Controller.urlMapping = urlMapping;
    }
}