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updated PresenceServiceImpl

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git-svn-id: svn://anubis/gvsu@276 45c1a28c-8058-47b2-ae61-ca45b979098e
This commit is contained in:
josh 2008-11-29 16:53:20 +00:00
parent 38452f6f26
commit fe87ea7e8f
3 changed files with 309 additions and 100 deletions
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22
cs656/lab4/ChatServer.java
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@ -10,10 +10,26 @@ import org.restlet.Router;
import org.restlet.data.Protocol;
import org.restlet.util.Variable;
import com.db4o.Db4o;
import com.db4o.ObjectContainer;
import com.db4o.config.Configuration;
public class ChatServer extends Application
{
/**
* This is our persistant object database container.
*/
private ObjectContainer myContainer;
public ChatServer()
{
/** Open and keep the db4o object container. */
Configuration config = Db4o.configure();
config.updateDepth(2);
String fileName = System.getProperty("user.home")
+ File.separator + "cs656-lab4-users.dbo";
System.out.println("Database file is: " + fileName);
myContainer = Db4o.openFile(fileName);
}
/* Create application root node.
@ -25,7 +41,7 @@ public class ChatServer extends Application
Router router = new Router(getContext());
// Add a route for user resources
router.attach("/users", UserResource.class);
router.attach("/users", UsersResource.class);
// Add a route for a user resource
router.attach("/users/{id}", UserResource.class);
@ -33,12 +49,10 @@ public class ChatServer extends Application
return router;
}
/*
public ObjectContainer getContainer()
{
return this.container;
return myContainer;
}
*/
/**
* @param args Passed in from the command line.

114
cs656/lab4/PresenceServiceImpl.java
View File

@ -1,5 +1,6 @@
import java.io.IOException;
import java.util.*;
import org.restlet.Client;
import org.restlet.data.Form;
@ -15,11 +16,13 @@ public class PresenceServiceImpl implements PresenceService
{
private int myPort;
private String myHost;
private String myAppURI;
public PresenceServiceImpl(String host, int port)
{
myHost = host;
myPort = port;
myAppURI = "http://" + host + ":" + port + "/v1";
}
/**
@ -28,6 +31,22 @@ public class PresenceServiceImpl implements PresenceService
*/
public void register(RegistrationInfo reg) throws Exception
{
Form form = new Form();
form.add("user[name]", reg.getUserName());
form.add("user[host]", reg.getHost());
form.add("user[port]", reg.getPort());
form.add("user[status]", reg.getStatus() ? "available" : "away");
// construct request to create a new user resource
String usersResouceUri = myAppURI + "/users";
Request request = new Request(Method.POST, usersResouceUri);
request.setEntity(form.getWebRepresentation());
// Invoke the client HTTP connector
Response resp = new Client(Protocol.HTTP).handle(request);
if ( ! resp.getStatus().isSuccess() )
System.out.println(resp.getStatus());
}
/**
@ -37,6 +56,13 @@ public class PresenceServiceImpl implements PresenceService
*/
public void unregister(String userName) throws Exception
{
String userResourceUri = myAppURI + "/users/" + userName;
Request request = new Request(Method.DELETE, userResourceUri);
// Invoke the client HTTP connector
Response resp = new Client(Protocol.HTTP).handle(request);
if ( ! resp.getStatus().isSuccess() )
System.err.println(resp.getStatus());
}
/**
@ -47,6 +73,23 @@ public class PresenceServiceImpl implements PresenceService
*/
public RegistrationInfo lookup(String name) throws Exception
{
try
{
String userResourceUri = myAppURI + "/users/" + name;
request = new Request(Method.GET, userResourceUri);
resp = new Client(Protocol.HTTP).handle(request);
if ( ! resp.getStatus().isSuccess() )
System.out.println(resp.getStatus());
DomRepresentation d = resp.getEntityAsDom();
Node n = d.getFirstChild();
if (n == null)
return null;
return nodeToRegInfo(n);
}
catch (Exception ioex)
{
ioex.printStackTrace();
}
return null;
}
@ -57,6 +100,24 @@ public class PresenceServiceImpl implements PresenceService
*/
public void setStatus(String userName, boolean status) throws Exception
{
Form form = new Form();
form.add("user[status]", status ? "available" : "away");
String userResourceUri = myAppURI + "/users/" + userName;
Request request = new Request(Method.PUT, userResourceUri);
request.setEntity(form.getWebRepresentation());
try
{
// Invoke the client HTTP connector
Response resp = new Client(Protocol.HTTP).handle(request);
if ( ! resp.getStatus().isSuccess() )
System.err.println(resp.getStatus());
}
catch (IOException e)
{
e.printStackTrace();
}
}
/**
@ -66,6 +127,57 @@ public class PresenceServiceImpl implements PresenceService
*/
public RegistrationInfo[] listRegisteredUsers() throws Exception
{
return null;
Vector<RegistrationInfo> users = new Vector<RegistrationInfo>();
try
{
String usersResourceUri = myAppURI + "/users";
Request request = new Request(Method.GET, usersResourceUri);
// Invoke the client HTTP connector
Response resp = new Client(Protocol.HTTP).handle(request);
if ( ! resp.getStatus().isSuccess() )
System.err.println(resp.getStatus());
DomRepresentation dom = resp.getEntityAsDom();
System.out.println("DEBUG: DOM received:\n" + dom.getText());
Document d = dom.getDocument();
Node root = d.getFirstChild();
NodeList nl = root.getChildren();
for (int i = 0; i < nl.getLength(); i++)
{
Node n = nl.item(i);
if (n.getNodeName().equals("user"))
{
RegistrationInfo ri = nodeToRegInfo(n);
users.add(ri);
}
}
}
catch (Exception ioex)
{
ioex.printStackTrace();
}
return users.toArray();
}
private RegistrationInfo nodeToRegInfo(Node n)
{
Registration ri = new RegistrationInfo();
NodeList nl = n.getChildNodes();
for (int i = 0; i < nl.getLength(); i++)
{
Node n = nl.item(i);
String name = n.getNodeName();
if (name.equals("name"))
ri.setUserName(name.getTextContent());
else if (name.equals("host"))
ri.setHost(name.getTextContent());
else if (name.equals("port"))
ri.setPort(Integer.parseInt(name.getTextContent()));
else if (name.equals("status"))
ri.setStatus(name.getTextContent().equals("available"));
}
return ri;
}
}

125
cs656/lab4/UserResource.java
View File

@ -1,11 +1,12 @@
//----------------------------------------------------------------------
//
// Filename: UserResource.java
// Filename: BookResource.java
// Description:
//
// $Id:$
//
//----------------------------------------------------------------------
package edu.gvsu.cis.rest.example;
import java.io.IOException;
@ -14,73 +15,97 @@ import org.restlet.data.Form;
import org.restlet.data.MediaType;
import org.restlet.data.Request;
import org.restlet.data.Response;
import org.restlet.resource.Resource;
import org.restlet.data.Status;
import org.restlet.resource.DomRepresentation;
import org.restlet.resource.Representation;
import org.restlet.resource.Variant;
public class UserResource extends Resource
{
public UserResource(Context context, Request request, Response response)
/**
*
* Book Resource. This handles HTTP requests against a specific Book resource.
* e.g. URIs of the form /v1/books/{id}
*
* @author Jonathan Engelsma
*
*/
public class BookResource extends BaseResource {
private Book book;
/**
* Load up the book resource data that is being called on.
* @param context Context of the HTTP request.
* @param request The HTTP request.
* @param response The HTTP response that will be returned to the caller.
*/
public BookResource(Context context, Request request, Response response)
{
super(context, request, response);
System.out.println("In BookResource");
String id = (String) request.getAttributes().get("id");
this.book = findBook(id);
if(this.book != null) {
getVariants().add(new Variant(MediaType.TEXT_XML));
}
}
/**
* handle HTTP GET requests.
* handle HTTP GET requests. Return an XML representation of the book resource.
*/
@Override
public Representation getRepresentation(Variant variant)
{
DomRepresentation rep=null;
if (variant.getMediaType().equals(MediaType.TEXT_XML))
{
try
{
if (variant.getMediaType().equals(MediaType.TEXT_XML)){
try {
if (book!=null){
rep = book.getDomRepresentation();
}
else{
rep = new DomRepresentation(MediaType.TEXT_XML);
getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND);
rep.getDocument().normalizeDocument();
//TODO: we need to return a 404 here.
//Error.embedErrorInResponse(rep.getDocument(),MediaType.TEXT_XML,Error.ErrorCode.RESOURCE_UNDEFINED);
}
catch (IOException e)
{
rep.getDocument().normalizeDocument();
} catch (IOException e){
e.printStackTrace();
}
}
return rep;
}
@Override
public boolean allowDelete()
{
public boolean allowDelete() {
return true;
}
/**
* Handle an HTTP DELETE request. Delete the book resource.
*/
@Override
public void delete()
{
/*
if (this.book != null)
{
if (this.book != null) {
getContainer().delete(this.book);
// TODO: need to delete the book reviews here as well.
getContainer().commit();
getResponse().setStatus(Status.SUCCESS_OK);
} else {
getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND);
}
*/
}
/**
* PUT is implemented.
*/
@Override
public boolean allowPut()
{
public boolean allowPut() {
// TODO Auto-generated method stub
return true;
}
@ -90,5 +115,63 @@ public class UserResource extends Resource
@Override
public void put(Representation entity)
{
try {
if (entity.getMediaType().equals(MediaType.APPLICATION_WWW_FORM, true) && (this.book != null)) {
// Parse the entity as a web form
Form form = new Form(entity);
// update the loaded Book object
String value = form.getFirstValue("book[authors]");
if (value != null) {
book.setAuthors(value);
}
value = form.getFirstValue("book[isbn]");
if(value != null) {
book.setIsbn(value);
}
value = form.getFirstValue("book[title]");
if(value != null) {
book.setTitle(value);
}
value = form.getFirstValue("book[publisher]");
if(value != null) {
book.setPublisher(value);
}
value = form.getFirstValue("book[year]");
if (value != null ) {
book.setYear(value);
}
// commit the changes.
getContainer().set(book);
getContainer().commit();
getResponse().setStatus(Status.SUCCESS_OK);
getResponse().setEntity(this.book.getDomRepresentation());
} else {
// Intentionnally hide the bookmark existence
getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND);
}
} catch (IOException e) {
getResponse().setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
e.printStackTrace();
}
}
/**
* Returns the book instance.
* @return a reference to a Book instance.
*/
public Book getBook() {
return this.book;
}
}