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@ -3,19 +3,94 @@ package linda.server;
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import linda.Callback;
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import linda.Linda;
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import linda.Tuple;
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import linda.shm.CentralizedLinda;
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/** Client part of a client/server implementation of Linda.
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* It implements the Linda interface and propagates everything to the server it is connected to.
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* */
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import java.net.MalformedURLException;
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import java.rmi.*;
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import java.util.Collection;
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/**
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* Client part of a client/server implementation of Linda.
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* It implements the Linda interface and propagates everything to the server it
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* is connected to.
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*/
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public class LindaClient implements Linda {
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/** Initializes the Linda implementation.
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* @param serverURI the URI of the server, e.g. "rmi://localhost:4000/LindaServer" or "//localhost:4000/LindaServer".
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Linda lindaServer;
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public static void main(String[] args) {
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try {
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LindaServer ls = (LindaServer) Naming.lookup(args[0]);
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Tuple t1 = new Tuple(1, "a");
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System.out.print("Tuple " + t1 + " envoyé");
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ls.write(t1);
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System.out.print("Tuple " + t1 + " écrit");
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try {
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Thread.sleep(3000);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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Tuple template = new Tuple(Integer.class, String.class);
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System.out.print("Lecture " + template + " envoyé");
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Tuple t2 = ls.read(template);
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System.out.print("Tuple " + t2 + " lu");
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} catch (MalformedURLException | RemoteException | NotBoundException e) {
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e.printStackTrace();
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}
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}
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/**
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* Initializes the Linda implementation.
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*
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* @param serverURI the URI of the server, e.g.
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* "rmi://localhost:4000/LindaServer" or
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* "//localhost:4000/LindaServer".
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*/
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public LindaClient(String serverURI) {
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// TO BE COMPLETED
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try {
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this.lindaServer = (Linda) Naming.lookup(serverURI);
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} catch (MalformedURLException | RemoteException | NotBoundException e) {
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e.printStackTrace();
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}
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}
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// TO BE COMPLETED
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public void write(Tuple t) {
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lindaServer.write(t);
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}
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public Tuple take(Tuple template) {
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return lindaServer.take(template);
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}
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public Tuple read(Tuple template) {
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return lindaServer.read(template);
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}
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public Tuple tryTake(Tuple template) {
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return lindaServer.tryTake(template);
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}
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public Tuple tryRead(Tuple template) {
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return lindaServer.tryRead(template);
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}
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public Collection<Tuple> takeAll(Tuple template) {
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return lindaServer.takeAll(template);
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}
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public Collection<Tuple> readAll(Tuple template) {
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return lindaServer.readAll(template);
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}
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public void eventRegister(eventMode mode, eventTiming timing, Tuple template, Callback callback) {
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lindaServer.eventRegister(mode, timing, template, callback);
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}
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public void debug(String prefix) {
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lindaServer.debug(prefix);
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}
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}
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69
linda/server/LindaServer.java
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69
linda/server/LindaServer.java
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@ -0,0 +1,69 @@
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package linda.server;
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import java.rmi.*;
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import java.rmi.server.UnicastRemoteObject;
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import java.util.Collection;
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import linda.Callback;
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import linda.Linda;
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import linda.Tuple;
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import linda.shm.CentralizedLinda;
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/**
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* lindaServer
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*/
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public class LindaServer extends UnicastRemoteObject implements Linda {
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Linda lindaInstance;
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public static void main(String[] args) {
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try {
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LindaServer ls = new LindaServer();
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Naming.bind(args[0], ls);
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System.out.println("L'instance Linda a été publié sur le registre (" + args[0] + ") !\n");
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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public LindaServer() throws RemoteException {
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this.lindaInstance = new CentralizedLinda();
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}
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public void write(Tuple t) {
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lindaInstance.write(t);
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System.out.println("Le tuple " + t + " a été ajouté au TupleSpace !");
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}
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public Tuple take(Tuple template) {
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return lindaInstance.take(template);
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}
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public Tuple read(Tuple template) {
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return lindaInstance.read(template);
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}
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public Tuple tryTake(Tuple template) {
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return lindaInstance.tryTake(template);
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}
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public Tuple tryRead(Tuple template) {
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return lindaInstance.tryRead(template);
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}
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public Collection<Tuple> takeAll(Tuple template) {
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return lindaInstance.takeAll(template);
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}
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public Collection<Tuple> readAll(Tuple template) {
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return lindaInstance.readAll(template);
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}
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public void eventRegister(eventMode mode, eventTiming timing, Tuple template, Callback callback) {
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lindaInstance.eventRegister(mode, timing, template, callback);
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}
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public void debug(String prefix) {
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lindaInstance.debug(prefix);
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}
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}
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@ -227,30 +227,30 @@ public class CentralizedLinda implements Linda {
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try {
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while (!found) {
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// Waiting for reading access
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requestReading();
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// Waiting for access
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switch (mode) {
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case READ:
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requestReading();
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break;
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case TAKE:
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requestWriting();
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break;
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}
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// Find the tuple in the tuple list
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for (index = 0; index < tuples.size(); index++) {
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if (tuples.get(index).matches(template)) {
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// Tuple matching
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switch (timing) {
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case IMMEDIATE:
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// Tuple found
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found = true;
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break;
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case FUTURE:
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// Is tuple unknown
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for (Tuple knownTuple : knownTuples) {
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if (knownTuple != tuples.get(index)) {
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found = true;
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break;
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}
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if (timing == eventTiming.IMMEDIATE || knownTuples.isEmpty()) {
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found = true;
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} else {
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for (Tuple knownTuple : knownTuples) {
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if (knownTuple != tuples.get(index)) {
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found = true;
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break;
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}
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break;
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}
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}
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// Rebreak to end searching
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}
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}
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// End reading
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endReading();
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// End access
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switch (mode) {
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case READ:
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endReading();
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break;
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case TAKE:
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endWriting();
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break;
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}
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}
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// Callback with the result tuple
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}
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public void debug(String prefix) {
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System.out.println(prefix + tuples);
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try {
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// Waiting for reading access
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requestReading();
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System.out.println(prefix + tuples);
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// End reading
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endReading();
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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private void requestReading() throws InterruptedException {
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@ -27,14 +27,14 @@ public class BasicTestCB {
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// linda = new linda.server.LindaClient("//localhost:4000/MonServeur");
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cbmotif = new Tuple(Integer.class, String.class);
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linda.eventRegister(eventMode.READ, eventTiming.IMMEDIATE, cbmotif, new MyCallback());
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linda.debug("(1.1)");
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Tuple t1 = new Tuple(1, "a");
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System.out.println("(2) write: " + t1);
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System.out.println("(1) write: " + t1);
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linda.write(t1);
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linda.debug("(1.2)");
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linda.eventRegister(eventMode.READ, eventTiming.FUTURE, cbmotif, new MyCallback());
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try {
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Thread.sleep(5000);
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} catch (InterruptedException e) {
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linda.debug("(3.1)");
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Tuple t3 = new Tuple(3, "c");
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System.out.println("(2) write: " + t3);
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System.out.println("(3) write: " + t3);
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linda.write(t3);
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linda.debug("(3.2)");
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