HttpUtils.java

/*
 * TeleStax, Open Source Cloud Communications  Copyright 2012. 
 * and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.mobicents.smsc.slee.services.http.server.tx.utils;

import com.google.common.net.MediaType;
import org.mobicents.smsc.slee.services.http.server.tx.enums.ResponseFormat;

import javax.servlet.http.HttpServletResponse;
import javax.slee.facilities.Tracer;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * Created by dgrudzinski on 2016-08-02.
 * Updated by tpalucki
 */
public class HttpUtils {

    public static void sendOkResponseWithContent(Tracer tracer, HttpServletResponse response, String content, ResponseFormat responseFormat) throws IOException {
        if (tracer.isFineEnabled()) {
            tracer.info("Sending 200 OK");
        }
        response.setStatus(HttpServletResponse.SC_OK);
        if (content != null) {
            if (tracer.isFineEnabled()) {
                tracer.fine("Sending 200 OK: content:" + content);
            }
            response.setContentType(getContentTypeFromFormat(responseFormat).toString());
            PrintWriter writer = response.getWriter();
            writer.write(content);
            writer.flush();
        } else {
            tracer.severe("Content is empty");
        }
        response.flushBuffer();
    }

    public static void sendErrorResponse(Tracer tracer, HttpServletResponse response, int status, String message) throws IOException {
        if (tracer.isFineEnabled()) {
            tracer.fine("Sending sendError: status:" + status + " message:" + message);
        }
        response.sendError(status, message);
        response.flushBuffer();
    }


    public static void sendErrorResponseWithContent(Tracer tracer, HttpServletResponse response, int status, String message,
                                                    String content, ResponseFormat responseFormat) throws IOException {
        if (tracer.isFineEnabled()) {
            tracer.fine("Sending sendErrorWithContent: status: " + status + " message: " + message + " content: " + content);
        }
        response.setStatus(status);
        response.setContentType(getContentTypeFromFormat(responseFormat).toString());
        if(content != null) {
            PrintWriter writer = response.getWriter();
            writer.write(content);
            writer.flush();
        }
        response.flushBuffer();
    }

    private static MediaType getContentTypeFromFormat(ResponseFormat responseFormat){
        switch (responseFormat) {
            case JSON:
                return  MediaType.JSON_UTF_8;
            case STRING:
                return  MediaType.PLAIN_TEXT_UTF_8;
            default:
                return  MediaType.PLAIN_TEXT_UTF_8;
        }
    }
}