package tests;
import application.DataGenerator;
import application.GuideMichelin;
import application.GuideMichelinImpl;
import chord.*;
import exceptions.AlreadyRegisteredException;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.util.Map;
/**
* Classe de test verifiant l'accessibilite des donnees a partir d'un pair
*
* @author Laurent
*/
public class TestCache
{
/**
* Number of peers that will be injected in the network
*/
private static final int NB_PEERS = 10;
/**
* Port number of RMI registry
*/
private static final int RMI_REGISTRY_PORT = 1099;
private static GuideMichelin guideMichelin;
/**
* @param args Not used
* @throws Exception
*/
public static void main(String[] args) throws Exception
{
// A tracker is created
new TrackerImpl(RMI_REGISTRY_PORT);
Tracker tracker = (Tracker) Naming.lookup("rmi://localhost:" + RMI_REGISTRY_PORT + "/tracker");
// A Chord network is initialized
createNetwork(tracker);
// All the peers in the network are listed
Thread.sleep((long) (Math.log(NB_PEERS) * 1000));
System.out.println("\nTurn around after first stabilization");
turnAround(tracker.getRandomPeer());
Thread.sleep((long) (Math.log(NB_PEERS) * 1000));
System.out.println("\nTurn around after second stabilization");
turnAround(tracker.getRandomPeer());
// A GuideMichelin is created. It will use the Chord network
GuideMichelin guideMichelin = new GuideMichelinImpl(tracker);
// Some data are added to the {@link GuideMichelin}
DataGenerator dataGenerator = new DataGenerator(10);
Map<String, String> newData;
for(int i = 0 ; i < 10 ; i++)
{
newData = dataGenerator.getNewData();
for(Map.Entry<String, String> entry : newData.entrySet())
{
guideMichelin.put(entry.getKey(), entry.getValue(), 5);
}
}
// The peers are listed again with the data they store
Thread.sleep(2000);
System.out.println("\nTurn around after adding data");
turnAround(tracker.getRandomPeer());
// Some data are requested from the GuideMichelin
String[] restaurants = {"Le Bistrot Gourmand" , "Auberge de la Madone" , "toto"};
for(String restaurant : restaurants)
{
System.out.println("\nRestaurant '" + restaurant + "' - Daily special: '" + guideMichelin.get(restaurant)
+ "'");
}
System.out.println("TEST\n");
String[] restaurantsTest = {"L'Aphrodite" , "Jean-Francois Issautier" , "Le Mas Candille" , "Louis XV" ,
"l'Hostellerie Jerome" , "Le Park 45" , "Le Bistrot Gourmand" , "Auberge de la Madone" ,
"A la bonne cuillere" ,};
for(String restaurant : restaurantsTest)
{
try
{
Peer p = guideMichelin.getPeer(restaurant);
if(p.get(restaurant) == null) if(p.getReplicat(restaurant) == null)
{
System.out.println("\nL'Objet '" + restaurant + " est pas dans la base\n");
}else
{
System.out.println("\n" + restaurant + " est dans un replicat\n");
}
else
{
System.out.println(restaurant + " est dans data");
}
}
catch(RemoteException e)
{
e.printStackTrace();
}
}
}
/**
* Creates a network composed of NB_PEERS peers.
*
* @param tracker The tracker that is going to keep track of the peers
* @throws RemoteException
* @throws exceptions.AlreadyRegisteredException If a peer tries to register more
* than once
*/
private static void createNetwork(Tracker tracker) throws RemoteException, AlreadyRegisteredException
{
for(int i = 0 ; i < NB_PEERS ; i++)
{
Peer p = new PeerImpl(new Identifier(i * 100));
if(i == 0)
{
System.out.println("Ring created by " + p.getId());
p.create();
}else
{
// The new peer is inserted in the network using a random peer
// that already belongs to the network. This random peer is
// retrieved thanks to the tracker.
Peer randomPeer = tracker.getRandomPeer();
System.out.println("Added " + p.getId() + " from " + randomPeer.getId() + " that points to " +
randomPeer.getSuccessor().getId());
p.join(randomPeer);
}
tracker.register(p);
}
}
/**
* This method run through the entire Chord network and print each
* encountered peer.
*
* @param landmarkPeer The peer from which the turn starts
* @throws RemoteException
*/
private static void turnAround(Peer landmarkPeer) throws RemoteException
{
System.out.println("\nStarted turn around from " + landmarkPeer.getId());
Peer nextPeer = landmarkPeer;
do
{
nextPeer = nextPeer.getSuccessor();
System.out.println("Visited " + nextPeer.describe());
}
while(!nextPeer.equals(landmarkPeer));
}
}