updated PresenceServiceImpl
git-svn-id: svn://anubis/gvsu@276 45c1a28c-8058-47b2-ae61-ca45b979098e
This commit is contained in:
josh
parent
38452f6f26
commit
fe87ea7e8f
@ -10,10 +10,26 @@ import org.restlet.Router;
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import org.restlet.data.Protocol;
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import org.restlet.util.Variable;
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import com.db4o.Db4o;
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import com.db4o.ObjectContainer;
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import com.db4o.config.Configuration;
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public class ChatServer extends Application
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{
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public ChatServer()
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/**
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* This is our persistant object database container.
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*/
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private ObjectContainer myContainer;
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public ChatServer()
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{
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/** Open and keep the db4o object container. */
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Configuration config = Db4o.configure();
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config.updateDepth(2);
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String fileName = System.getProperty("user.home")
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+ File.separator + "cs656-lab4-users.dbo";
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System.out.println("Database file is: " + fileName);
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myContainer = Db4o.openFile(fileName);
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}
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/* Create application root node.
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@ -25,7 +41,7 @@ public class ChatServer extends Application
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Router router = new Router(getContext());
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// Add a route for user resources
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router.attach("/users", UserResource.class);
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router.attach("/users", UsersResource.class);
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// Add a route for a user resource
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router.attach("/users/{id}", UserResource.class);
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@ -33,12 +49,10 @@ public class ChatServer extends Application
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return router;
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}
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/*
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public ObjectContainer getContainer()
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{
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return this.container;
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return myContainer;
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}
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*/
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/**
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* @param args Passed in from the command line.
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@ -1,5 +1,6 @@
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import java.io.IOException;
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import java.util.*;
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import org.restlet.Client;
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import org.restlet.data.Form;
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@ -15,11 +16,13 @@ public class PresenceServiceImpl implements PresenceService
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{
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private int myPort;
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private String myHost;
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private String myAppURI;
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public PresenceServiceImpl(String host, int port)
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{
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myHost = host;
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myPort = port;
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myAppURI = "http://" + host + ":" + port + "/v1";
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}
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/**
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@ -28,6 +31,22 @@ public class PresenceServiceImpl implements PresenceService
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*/
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public void register(RegistrationInfo reg) throws Exception
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{
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Form form = new Form();
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form.add("user[name]", reg.getUserName());
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form.add("user[host]", reg.getHost());
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form.add("user[port]", reg.getPort());
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form.add("user[status]", reg.getStatus() ? "available" : "away");
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// construct request to create a new user resource
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String usersResouceUri = myAppURI + "/users";
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Request request = new Request(Method.POST, usersResouceUri);
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request.setEntity(form.getWebRepresentation());
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// Invoke the client HTTP connector
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Response resp = new Client(Protocol.HTTP).handle(request);
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if ( ! resp.getStatus().isSuccess() )
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System.out.println(resp.getStatus());
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}
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/**
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@ -37,6 +56,13 @@ public class PresenceServiceImpl implements PresenceService
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*/
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public void unregister(String userName) throws Exception
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{
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String userResourceUri = myAppURI + "/users/" + userName;
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Request request = new Request(Method.DELETE, userResourceUri);
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// Invoke the client HTTP connector
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Response resp = new Client(Protocol.HTTP).handle(request);
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if ( ! resp.getStatus().isSuccess() )
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System.err.println(resp.getStatus());
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}
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/**
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@ -47,6 +73,23 @@ public class PresenceServiceImpl implements PresenceService
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*/
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public RegistrationInfo lookup(String name) throws Exception
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{
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try
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{
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String userResourceUri = myAppURI + "/users/" + name;
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request = new Request(Method.GET, userResourceUri);
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resp = new Client(Protocol.HTTP).handle(request);
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if ( ! resp.getStatus().isSuccess() )
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System.out.println(resp.getStatus());
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DomRepresentation d = resp.getEntityAsDom();
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Node n = d.getFirstChild();
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if (n == null)
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return null;
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return nodeToRegInfo(n);
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}
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catch (Exception ioex)
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{
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ioex.printStackTrace();
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}
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return null;
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}
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@ -57,6 +100,24 @@ public class PresenceServiceImpl implements PresenceService
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*/
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public void setStatus(String userName, boolean status) throws Exception
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{
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Form form = new Form();
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form.add("user[status]", status ? "available" : "away");
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String userResourceUri = myAppURI + "/users/" + userName;
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Request request = new Request(Method.PUT, userResourceUri);
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request.setEntity(form.getWebRepresentation());
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try
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{
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// Invoke the client HTTP connector
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Response resp = new Client(Protocol.HTTP).handle(request);
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if ( ! resp.getStatus().isSuccess() )
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System.err.println(resp.getStatus());
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}
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catch (IOException e)
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{
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e.printStackTrace();
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}
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}
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/**
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@ -66,6 +127,57 @@ public class PresenceServiceImpl implements PresenceService
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*/
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public RegistrationInfo[] listRegisteredUsers() throws Exception
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{
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return null;
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Vector<RegistrationInfo> users = new Vector<RegistrationInfo>();
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try
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{
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String usersResourceUri = myAppURI + "/users";
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Request request = new Request(Method.GET, usersResourceUri);
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// Invoke the client HTTP connector
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Response resp = new Client(Protocol.HTTP).handle(request);
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if ( ! resp.getStatus().isSuccess() )
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System.err.println(resp.getStatus());
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DomRepresentation dom = resp.getEntityAsDom();
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System.out.println("DEBUG: DOM received:\n" + dom.getText());
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Document d = dom.getDocument();
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Node root = d.getFirstChild();
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NodeList nl = root.getChildren();
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for (int i = 0; i < nl.getLength(); i++)
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{
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Node n = nl.item(i);
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if (n.getNodeName().equals("user"))
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{
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RegistrationInfo ri = nodeToRegInfo(n);
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users.add(ri);
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}
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}
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}
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catch (Exception ioex)
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{
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ioex.printStackTrace();
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}
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return users.toArray();
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}
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private RegistrationInfo nodeToRegInfo(Node n)
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{
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Registration ri = new RegistrationInfo();
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NodeList nl = n.getChildNodes();
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for (int i = 0; i < nl.getLength(); i++)
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{
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Node n = nl.item(i);
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String name = n.getNodeName();
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if (name.equals("name"))
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ri.setUserName(name.getTextContent());
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else if (name.equals("host"))
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ri.setHost(name.getTextContent());
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else if (name.equals("port"))
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ri.setPort(Integer.parseInt(name.getTextContent()));
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else if (name.equals("status"))
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ri.setStatus(name.getTextContent().equals("available"));
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}
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return ri;
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}
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}
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@ -1,94 +1,177 @@
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//----------------------------------------------------------------------
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//
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// Filename: UserResource.java
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// Description:
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//
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// $Id:$
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//
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//----------------------------------------------------------------------
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import java.io.IOException;
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import org.restlet.Context;
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import org.restlet.data.Form;
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import org.restlet.data.MediaType;
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import org.restlet.data.Request;
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import org.restlet.data.Response;
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import org.restlet.resource.Resource;
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import org.restlet.data.Status;
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import org.restlet.resource.DomRepresentation;
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import org.restlet.resource.Representation;
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import org.restlet.resource.Variant;
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public class UserResource extends Resource
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{
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public UserResource(Context context, Request request, Response response)
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{
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super(context, request, response);
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String id = (String) request.getAttributes().get("id");
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getVariants().add(new Variant(MediaType.TEXT_XML));
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}
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/**
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* handle HTTP GET requests.
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*/
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@Override
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public Representation getRepresentation(Variant variant)
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{
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DomRepresentation rep = null;
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if (variant.getMediaType().equals(MediaType.TEXT_XML))
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{
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try
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{
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rep = new DomRepresentation(MediaType.TEXT_XML);
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getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND);
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rep.getDocument().normalizeDocument();
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}
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catch (IOException e)
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{
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e.printStackTrace();
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}
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}
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return rep;
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}
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@Override
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public boolean allowDelete()
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{
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return true;
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}
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@Override
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public void delete()
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{
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/*
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if (this.book != null)
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{
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getContainer().delete(this.book);
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getContainer().commit();
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getResponse().setStatus(Status.SUCCESS_OK);
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} else {
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getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND);
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}
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*/
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}
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/**
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* PUT is implemented.
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*/
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@Override
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public boolean allowPut()
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{
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return true;
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}
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/**
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* Update a resource in response to an HTTP PUT call.
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*/
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@Override
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public void put(Representation entity)
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{
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}
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}
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//----------------------------------------------------------------------
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//
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// Filename: BookResource.java
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// Description:
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//
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// $Id:$
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//
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//----------------------------------------------------------------------
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package edu.gvsu.cis.rest.example;
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import java.io.IOException;
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import org.restlet.Context;
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import org.restlet.data.Form;
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import org.restlet.data.MediaType;
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import org.restlet.data.Request;
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import org.restlet.data.Response;
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import org.restlet.data.Status;
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import org.restlet.resource.DomRepresentation;
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import org.restlet.resource.Representation;
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import org.restlet.resource.Variant;
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/**
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*
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* Book Resource. This handles HTTP requests against a specific Book resource.
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* e.g. URIs of the form /v1/books/{id}
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*
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* @author Jonathan Engelsma
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*
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*/
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public class BookResource extends BaseResource {
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private Book book;
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/**
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* Load up the book resource data that is being called on.
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* @param context Context of the HTTP request.
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* @param request The HTTP request.
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* @param response The HTTP response that will be returned to the caller.
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*/
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public BookResource(Context context, Request request, Response response)
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{
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super(context, request, response);
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System.out.println("In BookResource");
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String id = (String) request.getAttributes().get("id");
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this.book = findBook(id);
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if(this.book != null) {
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getVariants().add(new Variant(MediaType.TEXT_XML));
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}
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}
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/**
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* handle HTTP GET requests. Return an XML representation of the book resource.
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*/
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@Override
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public Representation getRepresentation(Variant variant)
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{
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DomRepresentation rep=null;
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if (variant.getMediaType().equals(MediaType.TEXT_XML)){
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try {
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if (book!=null){
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rep = book.getDomRepresentation();
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}
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else{
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rep = new DomRepresentation(MediaType.TEXT_XML);
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getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND);
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//TODO: we need to return a 404 here.
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//Error.embedErrorInResponse(rep.getDocument(),MediaType.TEXT_XML,Error.ErrorCode.RESOURCE_UNDEFINED);
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}
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rep.getDocument().normalizeDocument();
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} catch (IOException e){
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e.printStackTrace();
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}
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}
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return rep;
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}
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@Override
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public boolean allowDelete() {
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return true;
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}
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/**
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* Handle an HTTP DELETE request. Delete the book resource.
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*/
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@Override
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public void delete()
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{
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if (this.book != null) {
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getContainer().delete(this.book);
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// TODO: need to delete the book reviews here as well.
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getContainer().commit();
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getResponse().setStatus(Status.SUCCESS_OK);
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} else {
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getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND);
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}
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}
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/**
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* PUT is implemented.
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*/
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@Override
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public boolean allowPut() {
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// TODO Auto-generated method stub
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return true;
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}
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/**
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* Update a resource in response to an HTTP PUT call.
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*/
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@Override
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public void put(Representation entity)
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{
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try {
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if (entity.getMediaType().equals(MediaType.APPLICATION_WWW_FORM, true) && (this.book != null)) {
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// Parse the entity as a web form
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Form form = new Form(entity);
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// update the loaded Book object
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String value = form.getFirstValue("book[authors]");
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if (value != null) {
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book.setAuthors(value);
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}
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value = form.getFirstValue("book[isbn]");
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if(value != null) {
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book.setIsbn(value);
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}
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value = form.getFirstValue("book[title]");
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if(value != null) {
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book.setTitle(value);
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}
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value = form.getFirstValue("book[publisher]");
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if(value != null) {
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book.setPublisher(value);
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}
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value = form.getFirstValue("book[year]");
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if (value != null ) {
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book.setYear(value);
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}
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// commit the changes.
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getContainer().set(book);
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getContainer().commit();
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getResponse().setStatus(Status.SUCCESS_OK);
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getResponse().setEntity(this.book.getDomRepresentation());
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} else {
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// Intentionnally hide the bookmark existence
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getResponse().setStatus(Status.CLIENT_ERROR_NOT_FOUND);
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}
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} catch (IOException e) {
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getResponse().setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
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e.printStackTrace();
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}
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}
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/**
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* Returns the book instance.
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* @return a reference to a Book instance.
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*/
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public Book getBook() {
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return this.book;
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}
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}
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