[WSO2] Sample Web Application to Demonstrate Insertion, Retrieval and Deletion of a resource to Registry

Here is a sample web application to test Insertion, Retrieval and Deletion of a  resource to Registry.
Here is the sample servlet code. Github Link

package org.wso2.carbon.test;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.wso2.carbon.context.CarbonContext;
import org.wso2.carbon.context.RegistryType;
import org.wso2.carbon.registry.api.Registry;
import org.wso2.carbon.registry.api.Resource;
/**
 * Servlet implementation class RegistryTest
 */
@WebServlet("/RegistryTest")
public class RegistryTest extends HttpServlet {
    private static final long serialVersionUID = 1L;
    /**
     * Default constructor.
     */
    public RegistryTest() {
        // TODO Auto-generated constructor stub
    }
    protected void processRequest(HttpServletRequest request,
                                  HttpServletResponse response) throws ServletException, IOException {
        try {
            PrintWriter out = response.getWriter();
            System.out.print("URL = " + request.getRequestURL());
            System.out.print(" :: action = " + request.getParameter("action"));
            System.out.print(" :: path = " + request.getParameter("path"));
            System.out.println(" :: resource = "+ request.getParameter("resource"));
            String resourcePath = request.getParameter("path");
            String resourceValue = request.getParameter("resource");
            String action = request.getParameter("action");
            CarbonContext cCtx = CarbonContext.getThreadLocalCarbonContext();
            Registry registry = cCtx.getRegistry(RegistryType.SYSTEM_CONFIGURATION);
            if (resourcePath != null && action != null) {
                if (action.equalsIgnoreCase("add")) {
                    if( resourceValue != null){
                        Resource resource = registry.newResource();
                        resource.setContent(resourceValue);
                        registry.put(resourcePath, resource);
                        out.println("Resource added successfully!!");
                        out.println("Registry path :: " + resourcePath);
                        out.println("Registry value :: " + resourceValue);
                    }else{
                        out.println("ERROR :: Resource Value Empty!!!");
                    }
                } else if (action.equals("get")) {
                    if (registry.resourceExists(resourcePath)) {
                        Resource resource = registry.get(resourcePath);
                        String content = new String((byte[]) resource.getContent());
                        response.addHeader("resource-content", content);
                        out.println("Resource Found in Registry returned!!!");
                        out.println("Registry path :: " + resourcePath);
                        out.println("Registry value :: " + content);
                    } else {
                        out.println("ERROR :: Resource Not Found in Registry!!!");
                        out.println("Registry path :: " + resourcePath);
                    }
                } else if (action.equalsIgnoreCase("delete")) {
                    if (registry.resourceExists(resourcePath)) {
                        Resource resource = registry.get(resourcePath);
                        String content = new String((byte[]) resource.getContent());
                        registry.delete(resourcePath);
                        out.println("Resource Found and deleted!!!");
                        out.println("Registry path :: " + resourcePath);
                        out.println("Registry value :: " + content);
                    } else {
                        out.println("ERROR :: Resource Not Found in Registry!!!");
                        out.println("Registry path :: " + resourcePath);
                    }
                }
            } else {
                out.println("ERROR :: Resource Error!!!");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
     * response)
     */
    protected void doGet(HttpServletRequest request,
                         HttpServletResponse response) throws ServletException, IOException {
        processRequest(request, response);
    }
    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
     * response)
     */
    protected void doPost(HttpServletRequest request,
                          HttpServletResponse response) throws ServletException, IOException {
        processRequest(request, response);
    }
}

To test the application host it to WSO2 Application Server. Execute the following commands.

Adding resource

curl --data "action=add&path=&resource=" -v http://localhost:9763/CarbonTest-1.0.0/RegistryTest

e.g

curl --data "action=add&amp;path=/foo/bar&amp;resource=AAAAAAAAA" -v http://localhost:9763/CarbonTest-1.0.0/RegistryTest<br />

Getting resource

curl --data "action=get&path=" -v http://localhost:9763/CarbonTest-1.0.0/RegistryTest

e.g

curl --data "action=get&amp;path=/foo/bar" -v http://localhost:9763/CarbonTest-1.0.0/RegistryTest<br />

Deleting resource

curl --data "action=delete&path=" -v http://localhost:9763/CarbonTest-1.0.0/RegistryTest

e.g

curl --data "action=delete&amp;path=/foo/bar" -v http://localhost:9763/CarbonTest-1.0.0/RegistryTest<br />