org.fabrican.extension.variable.provider.servlet.RequestsServlet.java Source code

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Here is the source code for org.fabrican.extension.variable.provider.servlet.RequestsServlet.java

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/*
 * Copyright (c) 2013 TIBCO Software Inc. All Rights Reserved.
 *
 * Use is subject to the terms of the TIBCO license terms accompanying the download of this code.
 * In most instances, the license terms are contained in a file named license.txt.
 */
package org.fabrican.extension.variable.provider.servlet;

import java.util.HashMap;
import java.util.Map.Entry;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import static javax.servlet.http.HttpServletResponse.*;
import org.fabrican.extension.variable.provider.dao.RuleSetDAO;
import org.fabrican.extension.variable.provider.rules.RuleSet;
import org.json.JSONObject;

public class RequestsServlet extends HttpServlet {
    private static final String PARAM_PRIMARY = "primary";
    private static final String PARAM_SECONDARY = "secondary";

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException {
        String path = req.getPathInfo();

        String[] pathElements = path.split("/");
        String provider = null;
        for (String p : pathElements) {
            if (p.trim().length() > 0) {
                provider = p.trim();
                break;
            }
        }
        if (provider != null) {
            try {
                serviceRequest(provider, req, resp);
            } catch (Exception e) {
                throw new ServletException("Failed to process variable Request", e);
            }
        } else {
            resp.setStatus(SC_NOT_FOUND);
            return;
        }

    }

    private void serviceRequest(String n, HttpServletRequest req, HttpServletResponse resp) throws Exception {
        String pKey = req.getParameter(PARAM_PRIMARY);
        String sKey = req.getParameter(PARAM_SECONDARY);
        RuleSet rs = RuleSetDAO.getInstance().getRuleSetByName(n);
        if (rs == null) {
            resp.setStatus(SC_NOT_FOUND);
            return;
        } else {
            HashMap<String, String> hm = rs.evaluate(pKey, sKey);
            JSONObject jo = new JSONObject();
            for (Entry<String, String> e : hm.entrySet()) {
                jo.put(e.getKey(), e.getValue());
            }
            resp.setStatus(SC_OK);
            resp.getOutputStream().write(jo.toString().getBytes("utf-8"));
        }
    }

}