org.openmrs.module.clinicalsummary.web.controller.watcher.DownloadUploadWatcherController.java Source code

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Here is the source code for org.openmrs.module.clinicalsummary.web.controller.watcher.DownloadUploadWatcherController.java

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/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */

package org.openmrs.module.clinicalsummary.web.controller.watcher;

import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.codehaus.jackson.JsonEncoding;
import org.codehaus.jackson.JsonFactory;
import org.codehaus.jackson.JsonGenerator;
import org.openmrs.module.clinicalsummary.io.SummariesTaskInstance;
import org.openmrs.module.clinicalsummary.web.controller.MimeType;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 */
@Controller
@RequestMapping("/module/clinicalsummary/watcher/watchDownloadUpload")
public class DownloadUploadWatcherController {

    private static final Log log = LogFactory.getLog(DownloadUploadWatcherController.class);

    @RequestMapping(method = RequestMethod.GET)
    public void watch(final HttpServletResponse response) throws IOException {
        response.setContentType(MimeType.APPLICATION_JSON);
        JsonFactory factory = new JsonFactory();
        JsonGenerator generator = factory.createJsonGenerator(response.getOutputStream(), JsonEncoding.UTF8);
        generator.useDefaultPrettyPrinter();

        generator.writeStartObject();

        SummariesTaskInstance instance = SummariesTaskInstance.getInstance();
        generator.writeBooleanField("running", instance.isRunning());
        generator.writeStringField("filename", instance.getCurrentFilename());
        generator.writeStringField("task", instance.getCurrentTask());

        String summariesFilename = instance.getSummariesFilename();
        if (!instance.isRunning() && StringUtils.isNotEmpty(summariesFilename)) {
            generator.writeStringField("file", summariesFilename);
            SummariesTaskInstance.removeInstance();
        }

        generator.writeEndObject();
        generator.close();
    }
}