From e854a58a81ec90e419a4b3effa5a83caac05df90 Mon Sep 17 00:00:00 2001
From: jestin
Date: Sun, 13 May 2012 08:54:38 +0000
Subject: Modified the tests to remove bus.getDomain(null) make Waiter and
 WaiterClient sons of WaitFor Added a few tests into svn

---
 src/Ivy.java | 188 ++++++++++++++++++++---------------------------------------
 1 file changed, 63 insertions(+), 125 deletions(-)

(limited to 'src/Ivy.java')

diff --git a/src/Ivy.java b/src/Ivy.java
index 6f00062..f894ee4 100755
--- a/src/Ivy.java
+++ b/src/Ivy.java
@@ -11,11 +11,12 @@
  *<pre>
  *Ivy bus = new Ivy("Dummy agent","ready",null);
  *bus.bindMsg("(.*)",myMessageListener);
- *bus.start(getDomain(null));
+ *bus.start(null);
  *</pre>
  *
  *  CHANGELOG:
  *  1.2.16
+ *    - API break: getIvyClients now returns a Collection, instead of a Vector
  *    - fixes a concurent exception in the stop() method (no more
  *    removeClient , triggered in the SendNow test)
  *    - now uses the synchronized wrappers of the Java API for all collections
@@ -127,40 +128,36 @@
  *    fixed the printStackTrace upon closing of the ServerSocket after a close()
  */
 package fr.dgac.ivy;
+
 import java.net.*;
 import java.io.*;
 import gnu.getopt.Getopt;
 import java.util.regex.*;
 import java.util.Vector;
 import java.util.Collections;
+import java.util.Collection;
+import java.util.List;
 import java.util.Map;
 import java.util.HashMap;
+import java.util.ArrayList;
 import java.util.Properties;
 import java.util.StringTokenizer;
 
 public class Ivy implements Runnable {
 
   /**
-   * the port for the UDP rendez vous, if none is supplied.
-   */
-  public static final int DEFAULT_PORT = 2010;
-
-  /**
    * the default size of the IvyClients' socket buffer 
    * defaults to 4096, can be adjusted through the use of IVY_BUFFERSIZE JVM
    * property
    */
  
   private static final int PREFFERREDBUFFERSIZE = 4096; // in bytes
-  /**
-   * the domain for the UDP rendez vous.
-   */
-  public static final String DEFAULT_DOMAIN = "127.255.255.255:" + DEFAULT_PORT;
+
   /**
    * the library version, useful for development purposes only, when java is
    * invoked with -DIVY_DEBUG
    */
-  public static final String LIBVERSION ="1.2.16";
+  private  static final String LIBVERSION ="1.2.16";
 
   /*
    * private fields
@@ -178,7 +175,7 @@ public class Ivy implements Runnable {
   private Object lockApp = new Object();
   private boolean debug;
   private ServerSocket app;
-  private Vector<IvyWatcher> watchers = new Vector<IvyWatcher>();
+  private Collection<IvyWatcher> watchers = new ArrayList<IvyWatcher>();
   private volatile Thread serverThread; // to ensure quick communication of the end
   private Map<Integer,IvyClient> clients = Collections.synchronizedMap(new HashMap<Integer,IvyClient>());
   private Map<Integer,IvyClient> half = Collections.synchronizedMap(new HashMap<Integer,IvyClient>());
@@ -204,8 +201,10 @@ public class Ivy implements Runnable {
 
   /**
    * Readies the structures for the software bus connexion.
+   * The typical use of the constructor is the following
+   * <br><code>Ivy bus = new Ivy("AgentName", "AgentName ready", null);</code>
+   * <br>All the dirty work is done un the start() method
    *
-   * All the dirty work is done un the start() method
    * @see #start
    * @param name The name of your Ivy agent on the software bus
    * @param message The hellow message you will send once ready. It can be
@@ -262,13 +261,11 @@ public class Ivy implements Runnable {
     }
     // first check if client with the same name is on the bus
     ic = alreadyThere(clients , name);
-    if (ic != null) {
-      return ic;
-    }
+    if (ic != null) return ic;
     // if not enter the waiting loop
     WaiterClient w  = new WaiterClient(name , timeout , clients);
     int i = addApplicationListener(w);
-    ic = w.waitForClient();
+    ic = w.waitFor();
     removeApplicationListener(i);
     return ic;
   }
@@ -286,6 +283,34 @@ public class Ivy implements Runnable {
   }
 
   /**
+   * returns the domain bus.
+   * @deprecated if needed, use bus.start(null), and it will be called
+   * automatically
+   *
+   * @param domainbus if non null, returns the argument
+   * @return It returns domainbus, if non null,
+   * otherwise it returns the IVYBUS property if non null, otherwise it
+   * returns Ivy.DEFAULT_DOMAIN
+   */
+  @Deprecated public static final String getDomain(final String domainbus) {
+    return Domain.getDomain(domainbus);
+  }
+
+  /**
+   * returns the domain bus.
+   * @deprecated if needed, use Domain.getDomainArgs
+   *
+   * @since 1.2.8
+   * @param progname The name of your program, for error message
+   * @param args the String[] of arguments passed to your main()
+   * @return returns the domain bus, ascending priority : ivy default bus, IVY_BUS
+   * property, -b domain on the command line
+   */
+  @Deprecated public static final String getDomainArgs(final String progname, final String[] args) {
+    return Domain.getDomainArgs(progname, args);
+  }
+
+  /**
    * connects the Ivy bus to a domain or list of domains.
    *
    * <li>One thread (IvyWatcher) for each traffic rendezvous (either UDP broadcast or TCPMulticast)
@@ -310,9 +335,7 @@ public class Ivy implements Runnable {
     setStarting(true); // this will remain true entil one of the PacketSenders has finished
     stopped=false;
     String db = domainbus;
-    if (db == null) {
-      db = getDomain(null);
-    }
+    if (db == null) db = Domain.getDomain(null);
     Properties sysProp = System.getProperties();
     sysProp.put("IVYBUS" , db);
     String range = (String)sysProp.get("IVYRANGE");
@@ -348,11 +371,11 @@ public class Ivy implements Runnable {
     }
     traceDebug("lib: " + LIBVERSION + " protocol: " + Protocol.PROTOCOLVERSION + " TCP service open on port " + applicationPort);
 
-    Domain[] d = parseDomains(db);
-    if (d.length == 0) throw new IvyException("no domain found in " + db);
+    List<Domain> d = Domain.parseDomains(db);
+    if (d.size() == 0) throw new IvyException("no domain found in " + db);
     watcherId = getWBUId().replace(' ' , '*'); // no space in the watcherId
     // readies the rendezvous : an IvyWatcher (thread) per domain bus
-    for (Domain dom: d) watchers.addElement(new IvyWatcher(this , dom.domainaddr , dom.port));
+    for (Domain dom: d) watchers.add(new IvyWatcher(this , dom.getDomainaddr() , dom.getPort()));
     serverThread = new Thread(this);
     serverThread.setName("Ivy TCP server Thread");
     serverThread.setDaemon(true);
@@ -361,29 +384,6 @@ public class Ivy implements Runnable {
     for (IvyWatcher iw: watchers) iw.doStart();
   }
 
-  protected final Domain[] parseDomains(final String domainbus) {
-    StringTokenizer st = new StringTokenizer(domainbus , ",");
-    Domain[] d = new Domain[st.countTokens()];
-    int index = 0;
-    while  ( st.hasMoreTokens()) {
-      String s = st.nextToken();
-      try {
-        d[index++] = new Domain(IvyWatcher.getDomain(s) , IvyWatcher.getPort(s));
-      } catch (IvyException ie) {
-        // do nothing
-        ie.printStackTrace();
-      }
-    }
-    // fixes the port values ...
-    int lastport = Ivy.DEFAULT_PORT;
-    for (index--; index >= 0; index--) {
-      Domain dom = d[index];
-      if (dom.port == 0) dom.port = lastport;
-      lastport = dom.port;
-    }
-    return d;
-  }
-
 
   private void waitForRemote(String s) {
     try {
@@ -675,12 +675,16 @@ public class Ivy implements Runnable {
    * sets the filter expression.
    * @param f the extensive list of strings beginning the messages
    * @since 1.2.9
+   * @throws IvyException if a filter is already set or the bus is already
+   * started
    *
    * once this filter is set, when a client subscribes to a regexp of the
    * form "^dummystring...", there is a check against the filter list. If no
    * keyword is found to match, the binding is just ignored.
    */
-  public final synchronized void setFilter(final String[] f){
+  public final synchronized void setFilter(final String[] f) throws IvyException {
+    if (filter != null) throw new IvyException("only one filter can be set");
+    if (!stopped) throw new IvyException("cannot set a filter on a bus that's already started");
     filter = java.util.Arrays.copyOf(f , f.length);
   }
 
@@ -769,13 +773,13 @@ public class Ivy implements Runnable {
   }
 
   /**
-   * gives the (Vectored) list of IvyClient at a given instant.
-   * @return a vector of IvyClients
+   * gives a list of IvyClient at a given instant.
+   * @return a collection of IvyClients
    */
-  public final Vector<IvyClient> getIvyClients() {
-    Vector<IvyClient> v = new Vector<IvyClient>();
+  public final Collection<IvyClient> getIvyClients() {
+    Collection<IvyClient> v = new ArrayList<IvyClient>();
     synchronized (clients) {
-      for (IvyClient ic : clients.values() ) if (ic != null) v.addElement(ic);
+      for (IvyClient ic : clients.values() ) if (ic != null) v.add(ic);
     }
     return v;
   }
@@ -786,51 +790,19 @@ public class Ivy implements Runnable {
    * @param name The name of the Ivy agent you're looking for
    * @return a vector of IvyClients
    */
-  public final Vector<IvyClient> getIvyClientsByName(final String name) {
-    Vector<IvyClient> v = new Vector<IvyClient>();
+  public final Collection<IvyClient> getIvyClientsByName(final String name) {
+    Collection<IvyClient> v = new ArrayList<IvyClient>();
     String icname;
     synchronized (clients) {
       for (IvyClient ic :  clients.values() ) {
 	if ( (ic == null)||((icname = ic.getApplicationName()) == null) ) break;
-	if (icname.compareTo(name) == 0) v.addElement(ic);
+	if (icname.compareTo(name) == 0) v.add(ic);
       }
     }
     return v;
   }
 
   /**
-   * returns the domain bus.
-   *
-   * @param domainbus if non null, returns the argument
-   * @return It returns domainbus, if non null,
-   * otherwise it returns the IVYBUS property if non null, otherwise it
-   * returns Ivy.DEFAULT_DOMAIN
-   */
-  public static final String getDomain(final String domainbus) {
-    String db = null;
-    db = domainbus;
-    if ( db == null ) db = System.getProperty("IVYBUS");
-    if ( db == null ) db = DEFAULT_DOMAIN;
-    return db;
-  }
-
-  /**
-   * returns the domain bus.
-   *
-   * @since 1.2.8
-   * @param progname The name of your program, for error message
-   * @param args the String[] of arguments passed to your main()
-   * @return returns the domain bus, ascending priority : ivy default bus, IVY_BUS
-   * property, -b domain on the command line
-   */
-  public static final String getDomainArgs(final String progname, final String[] args) {
-    Getopt opt = new Getopt(progname , args , "b:");
-    int c;
-    if ( ((c = opt.getopt()) != -1) && c == 'b' ) return opt.getOptarg();
-    return getDomain(null);
-  }
-
-  /**
    * returns a "wana be unique" ID to make requests on the bus.
    *
    * @since 1.2.8
@@ -841,18 +813,6 @@ public class Ivy implements Runnable {
   }
   private synchronized long nextId() { return current++; }
 
-
-  /**
-   * prints a human readable representation of the list of domains.
-   *
-   * @since 1.2.9
-   */
-  public String domains(String toparse) {
-    StringBuffer s = new StringBuffer();
-    Ivy.Domain[] d = parseDomains(toparse);
-    for (Ivy.Domain dd : d) s.append(dd.getDomainaddr() + ":" + dd.getPort() + " ");
-    return s.toString();
-  }
   /////////////////////////////////////////////////////////////////:
   //
   // Protected methods
@@ -916,24 +876,10 @@ public class Ivy implements Runnable {
     traceDebug("removed " + c + " from half: " + getClientNames(half));
   }
 
-  /*
-  private synchronized boolean shouldIleave(IvyClient ic) {
-    traceDebug("looking for " + ic + " in " + getClientNames(half) + " and " + getClientNames(clients));
-    IvyClient peer = searchPeer(ic);
-    if (peer == null) return false;
-    boolean shoulda = peer.distanceTo(ic)>0;
-    traceDebug(ic + " " + ic.toStringExt() + ((shoulda) ? " must leave " : " must not leave"));
-    traceDebug(peer + " " + peer.toStringExt() + ((!shoulda) ? " must leave " : " must not leave"));
-    return shoulda;
-  }
-  */
-
   private synchronized IvyClient searchPeer(IvyClient ic) {
-    //synchronized(lock) {
-      synchronized (clients) {
-	for (IvyClient peer : clients.values()) if ((peer != null)&&(peer.equals(ic))) return peer;
-      }
-    //}
+    synchronized (clients) {
+      for (IvyClient peer : clients.values()) if ((peer != null)&&(peer.equals(ic))) return peer;
+    }
     return null;
   }
 
@@ -1013,13 +959,5 @@ public class Ivy implements Runnable {
     return s.toString();
   }
 
-  private static class Domain {
-    private String domainaddr;
-    private int port;
-    public Domain(String ddomainaddr , int dport) { this.domainaddr = ddomainaddr;this.port = dport; }
-    public String toString() { return domainaddr + ":" + port; }
-    public String getDomainaddr() { return domainaddr; }
-    public int getPort() { return port; }
-  }
 
-} // class Ivy
+}
-- 
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