Esempio n. 1
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  @ManagedOperation(description = "Dumps all locks")
  public String printLocks() {
    StringBuilder sb = new StringBuilder();
    sb.append("server locks:\n");
    for (Map.Entry<String, ServerLock> entry : server_locks.entrySet()) {
      sb.append(entry.getKey()).append(": ").append(entry.getValue()).append("\n");
    }

    sb.append("\nmy locks: ");
    boolean first_element = true;
    for (Map.Entry<String, Map<Owner, ClientLock>> entry : client_locks.entrySet()) {
      if (first_element) first_element = false;
      else sb.append(", ");
      sb.append(entry.getKey()).append(" (");
      Map<Owner, ClientLock> owners = entry.getValue();
      boolean first = true;
      for (Map.Entry<Owner, ClientLock> entry2 : owners.entrySet()) {
        if (first) first = false;
        else sb.append(", ");
        sb.append(entry2.getKey());
        ClientLock cl = entry2.getValue();
        if (!cl.acquired || cl.denied) sb.append(", unlocked");
      }
      sb.append(")");
    }
    return sb.toString();
  }
Esempio n. 2
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 @ManagedOperation(description = "Compacts the retransmission tables")
 public void compact() {
   for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
     NakReceiverWindow win = entry.getValue().received_msgs;
     win.compact();
   }
 }
Esempio n. 3
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  @ManagedOperation(
      description =
          "Sends a STABLE message to all senders. This causes message purging and potential"
              + " retransmissions from senders")
  public void sendStableMessages() {
    for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
      Address dest = entry.getKey();
      ReceiverEntry val = entry.getValue();
      NakReceiverWindow win = val != null ? val.received_msgs : null;
      if (win != null) {
        long[] tmp = win.getDigest();
        long low = tmp[0], high = tmp[1];

        if (val.last_highest == high) {
          if (val.num_stable_msgs >= val.max_stable_msgs) {
            continue;
          } else val.num_stable_msgs++;
        } else {
          val.last_highest = high;
          val.num_stable_msgs = 1;
        }
        sendStableMessage(dest, val.recv_conn_id, low, high);
      }
    }
  }
Esempio n. 4
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  public static void testDetermineMergeParticipantsAndMergeCoords4() {
    Address a = Util.createRandomAddress(),
        b = Util.createRandomAddress(),
        c = Util.createRandomAddress(),
        d = Util.createRandomAddress();
    org.jgroups.util.UUID.add(a, "A");
    org.jgroups.util.UUID.add(b, "B");
    org.jgroups.util.UUID.add(c, "C");
    org.jgroups.util.UUID.add(d, "D");

    View v1 = View.create(a, 1, a, b);
    View v2 = View.create(c, 1, c, d);

    Map<Address, View> map = new HashMap<>();
    map.put(a, v1);
    map.put(b, v1);
    map.put(d, v2);

    StringBuilder sb = new StringBuilder("map:\n");
    for (Map.Entry<Address, View> entry : map.entrySet())
      sb.append(entry.getKey() + ": " + entry.getValue() + "\n");
    System.out.println(sb);

    Collection<Address> merge_participants = Util.determineMergeParticipants(map);
    System.out.println("merge_participants = " + merge_participants);
    assert merge_participants.size() == 3;
    assert merge_participants.contains(a)
        && merge_participants.contains(c)
        && merge_participants.contains(d);

    Collection<Address> merge_coords = Util.determineMergeCoords(map);
    System.out.println("merge_coords = " + merge_coords);
    assert merge_coords.size() == 2;
    assert merge_coords.contains(a) && merge_coords.contains(c);
  }
Esempio n. 5
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 @ManagedOperation(
     description = "Purges highes delivered messages and compacts the retransmission tables")
 public void purgeAndCompact() {
   for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
     NakReceiverWindow win = entry.getValue().received_msgs;
     win.stable(win.getHighestDelivered());
     win.compact();
   }
 }
Esempio n. 6
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  @ManagedOperation
  public String printConnections() {
    StringBuilder sb = new StringBuilder();
    if (!send_table.isEmpty()) {
      sb.append("send connections:\n");
      for (Map.Entry<Address, SenderEntry> entry : send_table.entrySet()) {
        sb.append(entry.getKey()).append(": ").append(entry.getValue()).append("\n");
      }
    }

    if (!recv_table.isEmpty()) {
      sb.append("\nreceive connections:\n");
      for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
        sb.append(entry.getKey()).append(": ").append(entry.getValue()).append("\n");
      }
    }
    return sb.toString();
  }
Esempio n. 7
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 /**
  * Removed rejected merge requests from merge_rsps and coords. This method has a lock on
  * merge_rsps
  */
 private void removeRejectedMergeRequests(Collection<Address> coords) {
   for (Map.Entry<Address, MergeData> entry : merge_rsps.getResults().entrySet()) {
     Address member = entry.getKey();
     MergeData data = entry.getValue();
     if (data.merge_rejected) {
       if (data.getSender() != null) coords.remove(data.getSender());
       merge_rsps.remove(member);
     }
   }
 }
Esempio n. 8
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 @ManagedOperation(description = "Prints the contents of the send windows for all members")
 public String printSendWindowMessages() {
   StringBuilder ret = new StringBuilder(local_addr + ":\n");
   for (Map.Entry<Address, SenderEntry> entry : send_table.entrySet()) {
     Address addr = entry.getKey();
     Table<Message> buf = entry.getValue().sent_msgs;
     ret.append(addr).append(": ").append(buf.toString()).append('\n');
   }
   return ret.toString();
 }
Esempio n. 9
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 public void run() {
   for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
     Address target = entry.getKey(); // target to send retransmit requests to
     ReceiverEntry val = entry.getValue();
     Table<Message> buf = val != null ? val.received_msgs : null;
     if (buf != null && buf.getNumMissing() > 0) {
       SeqnoList missing = buf.getMissing();
       if (missing != null) retransmit(missing, target);
     }
   }
 }
Esempio n. 10
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 @ManagedOperation
 public void suspect(String suspected_member) {
   if (suspected_member == null) return;
   Map<Address, String> contents = UUID.getContents();
   for (Map.Entry<Address, String> entry : contents.entrySet()) {
     String logical_name = entry.getValue();
     if (logical_name != null && logical_name.equals(suspected_member)) {
       Address suspect = entry.getKey();
       if (suspect != null) up(new Event(Event.SUSPECT, suspect));
     }
   }
 }
Esempio n. 11
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 @ManagedOperation(description = "Returns the sizes of all NakReceiverWindow.RetransmitTables")
 public String printRetransmitTableSizes() {
   StringBuilder sb = new StringBuilder();
   for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
     NakReceiverWindow win = entry.getValue().received_msgs;
     sb.append(entry.getKey() + ": ")
         .append(win.getRetransmitTableSize())
         .append(" (capacity=" + win.getRetransmitTableCapacity())
         .append(", fill factor=" + win.getRetransmitTableFillFactor() + "%)\n");
   }
   return sb.toString();
 }
Esempio n. 12
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  @ManagedOperation(
      description = "Closes connections that have been idle for more than conn_expiry_timeout ms")
  public void reapIdleConnections() {
    if (conn_expiry_timeout <= 0) return;

    // remove expired connections from send_table
    for (Map.Entry<Address, SenderEntry> entry : send_table.entrySet()) {
      SenderEntry val = entry.getValue();
      long age = val.age();
      if (age >= conn_expiry_timeout) {
        removeSendConnection(entry.getKey());
        if (log.isDebugEnabled())
          log.debug(
              local_addr
                  + ": removed expired connection for "
                  + entry.getKey()
                  + " ("
                  + age
                  + " ms old) from send_table");
      }
    }

    // remove expired connections from recv_table
    for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
      ReceiverEntry val = entry.getValue();
      long age = val.age();
      if (age >= conn_expiry_timeout) {
        removeReceiveConnection(entry.getKey());
        if (log.isDebugEnabled())
          log.debug(
              local_addr
                  + ": removed expired connection for "
                  + entry.getKey()
                  + " ("
                  + age
                  + " ms old) from recv_table");
      }
    }
  }
Esempio n. 13
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 /**
  * Removes all members from a given view which don't have us in their view
  * (https://jira.jboss.org/browse/JGRP-1061). Example:
  *
  * <pre>
  * A: AB
  * B: AB
  * C: ABC
  * </pre>
  *
  * becomes
  *
  * <pre>
  * A: AB
  * B: AB
  * C: C // A and B don't have C in their views
  * </pre>
  *
  * @param map A map of members and their associated views
  */
 public static void sanitizeViews(Map<Address, View> map) {
   if (map == null) return;
   for (Map.Entry<Address, View> entry : map.entrySet()) {
     Address key = entry.getKey();
     Collection<Address> members = new ArrayList<Address>(entry.getValue().getMembers());
     boolean modified = false;
     for (Iterator<Address> it = members.iterator(); it.hasNext(); ) {
       Address val = it.next();
       if (val.equals(key)) // we can always talk to ourself !
       continue;
       View view = map.get(val);
       final Collection<Address> tmp_mbrs = view != null ? view.getMembers() : null;
       if (tmp_mbrs != null && !tmp_mbrs.contains(key)) {
         it.remove();
         modified = true;
       }
     }
     if (modified) {
       View old_view = entry.getValue();
       entry.setValue(new View(old_view.getVid(), members));
     }
   }
 }
Esempio n. 14
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 String dumpMessages(HashMap map) {
   StringBuffer sb = new StringBuffer();
   Map.Entry entry;
   List l;
   if (map != null) {
     synchronized (map) {
       for (Iterator it = map.entrySet().iterator(); it.hasNext(); ) {
         entry = (Map.Entry) it.next();
         l = (List) entry.getValue();
         sb.append(entry.getKey()).append(": ");
         sb.append(l.size()).append(" msgs\n");
       }
     }
   }
   return sb.toString();
 }
Esempio n. 15
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    void bundleAndSend() {
      Map.Entry entry;
      IpAddress dest;
      ObjectOutputStream out;
      InetAddress addr;
      int port;
      byte[] data;
      List l;

      if (Trace.trace) {
        Trace.info(
            "UDP.BundlingOutgoingPacketHandler.bundleAndSend()",
            "\nsending msgs:\n" + dumpMessages(msgs));
      }
      synchronized (msgs) {
        stopTimer();

        if (msgs.size() == 0) {
          return;
        }

        for (Iterator it = msgs.entrySet().iterator(); it.hasNext(); ) {
          entry = (Map.Entry) it.next();
          dest = (IpAddress) entry.getKey();
          addr = dest.getIpAddress();
          port = dest.getPort();
          l = (List) entry.getValue();
          try {
            out_stream.reset();
            // BufferedOutputStream bos=new BufferedOutputStream(out_stream);
            out_stream.write(Version.version_id, 0, Version.version_id.length); // write the version
            // bos.write(Version.version_id, 0, Version.version_id.length); // write the version
            out = new ObjectOutputStream(out_stream);
            // out=new ObjectOutputStream(bos);
            l.writeExternal(out);
            out.close(); // needed if out buffers its output to out_stream
            data = out_stream.toByteArray();
            doSend(data, addr, port);
          } catch (IOException e) {
            Trace.error(
                "UDP.BundlingOutgoingPacketHandle.bundleAndSend()",
                "exception sending msg (to dest=" + dest + "): " + e);
          }
        }
        msgs.clear();
      }
    }
Esempio n. 16
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 /**
  * \ Draw saved State (color dots on panel) on WhiteBoard
  *
  * @param outstream
  * @throws IOException
  */
 public void writeState(OutputStream outstream) throws IOException {
   if (state == null) return;
   synchronized (state) {
     DataOutputStream dos = new DataOutputStream(new BufferedOutputStream(outstream));
     // DataOutputStream dos=new DataOutputStream(outstream);
     dos.writeInt(state.size());
     for (Map.Entry<Point, Color> entry : state.entrySet()) {
       Point point = entry.getKey();
       Color col = entry.getValue();
       dos.writeInt(point.x);
       dos.writeInt(point.x);
       dos.writeInt(col.getRGB());
     }
     dos.flush();
     System.out.println("wrote " + state.size() + " elements");
   }
 }
Esempio n. 17
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 /** Draw the entire panel from the state */
 @SuppressWarnings("rawtypes")
 public void drawState() {
   // clear();
   Map.Entry entry;
   Point pt;
   Color col;
   synchronized (state) {
     for (Iterator it = state.entrySet().iterator(); it.hasNext(); ) {
       entry = (Map.Entry) it.next();
       pt = (Point) entry.getKey();
       col = (Color) entry.getValue();
       gr.setColor(col);
       gr.fillOval(pt.x, pt.y, 10, 10);
     }
   }
   repaint();
 }
Esempio n. 18
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  @ManagedOperation(description = "Reads data from local caches and dumps them to a file")
  public void dumpCache(String output_filename) throws Exception {
    Map<Address, PhysicalAddress> cache_contents =
        (Map<Address, PhysicalAddress>)
            down_prot.down(new Event(Event.GET_LOGICAL_PHYSICAL_MAPPINGS, false));

    List<PingData> list = new ArrayList<>(cache_contents.size());
    for (Map.Entry<Address, PhysicalAddress> entry : cache_contents.entrySet()) {
      Address addr = entry.getKey();
      PhysicalAddress phys_addr = entry.getValue();
      PingData data =
          new PingData(addr, true, UUID.get(addr), phys_addr).coord(addr.equals(local_addr));
      list.add(data);
    }
    OutputStream out = new FileOutputStream(output_filename);
    write(list, out);
  }
Esempio n. 19
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 /**
  * Removes responses which are done or whose timeout has expired (in the latter case, an expired
  * response is marked as done)
  */
 @ManagedOperation(description = "Removes expired or completed responses")
 public void weedOutCompletedDiscoveryResponses() {
   synchronized (ping_responses) {
     for (Iterator<Map.Entry<Long, Responses>> it = ping_responses.entrySet().iterator();
         it.hasNext(); ) {
       Map.Entry<Long, Responses> entry = it.next();
       long timestamp = entry.getKey();
       Responses rsps = entry.getValue();
       if (rsps.isDone()
           || TimeUnit.MILLISECONDS.convert(System.nanoTime() - timestamp, TimeUnit.NANOSECONDS)
               > discovery_rsp_expiry_time) {
         it.remove();
         rsps.done();
       }
     }
   }
 }
Esempio n. 20
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 protected void addResponse(PingData rsp, boolean overwrite) {
   synchronized (ping_responses) {
     for (Iterator<Map.Entry<Long, Responses>> it = ping_responses.entrySet().iterator();
         it.hasNext(); ) {
       Map.Entry<Long, Responses> entry = it.next();
       long timestamp = entry.getKey();
       Responses rsps = entry.getValue();
       rsps.addResponse(rsp, overwrite);
       if (rsps.isDone()
           || TimeUnit.MILLISECONDS.convert(System.nanoTime() - timestamp, TimeUnit.NANOSECONDS)
               > discovery_rsp_expiry_time) {
         it.remove();
         rsps.done();
       }
     }
   }
 }
Esempio n. 21
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    /**
     * Removed rejected merge requests from merge_rsps and coords. This method has a lock on
     * merge_rsps
     */
    private void removeRejectedMergeRequests(Collection<Address> coords) {
      int num_removed = 0;
      for (Iterator<Map.Entry<Address, MergeData>> it =
              merge_rsps.getResults().entrySet().iterator();
          it.hasNext(); ) {
        Map.Entry<Address, MergeData> entry = it.next();
        MergeData data = entry.getValue();
        if (data.merge_rejected) {
          if (data.getSender() != null) coords.remove(data.getSender());
          it.remove();
          num_removed++;
        }
      }

      if (num_removed > 0) {
        if (log.isTraceEnabled())
          log.trace(gms.local_addr + ": removed " + num_removed + " rejected merge responses");
      }
    }
Esempio n. 22
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 protected void handleView(View view) {
   this.view = view;
   if (log.isDebugEnabled()) log.debug("view=" + view);
   List<Address> members = view.getMembers();
   for (Map.Entry<String, ServerLock> entry : server_locks.entrySet()) {
     String lock_name = entry.getKey();
     ServerLock server_lock = entry.getValue();
     Lock lock = _getLock(lock_name);
     lock.lock();
     try {
       server_lock.handleView(members);
       if (server_lock.isEmpty()
           && server_lock.current_owner == null
           && server_lock.condition.queue.isEmpty()) server_locks.remove(lock_name);
     } finally {
       lock.unlock();
     }
   }
 }
Esempio n. 23
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  @SuppressWarnings("unchecked")
  public Object up(Event evt) {
    switch (evt.getType()) {
      case Event.MSG:
        Message msg = (Message) evt.getArg();
        PingHeader hdr = (PingHeader) msg.getHeader(this.id);
        if (hdr == null) return up_prot.up(evt);

        if (is_leaving) return null; // prevents merging back a leaving member
        // (https://issues.jboss.org/browse/JGRP-1336)

        PingData data = readPingData(msg.getRawBuffer(), msg.getOffset(), msg.getLength());
        Address logical_addr = data != null ? data.getAddress() : msg.src();

        switch (hdr.type) {
          case PingHeader.GET_MBRS_REQ: // return Rsp(local_addr, coord)
            if (cluster_name == null || hdr.cluster_name == null) {
              log.warn(
                  "cluster_name (%s) or cluster_name of header (%s) is null; passing up discovery "
                      + "request from %s, but this should not be the case",
                  cluster_name, hdr.cluster_name, msg.src());
            } else {
              if (!cluster_name.equals(hdr.cluster_name)) {
                log.warn(
                    "%s: discarding discovery request for cluster '%s' from %s; "
                        + "our cluster name is '%s'. Please separate your clusters properly",
                    logical_addr, hdr.cluster_name, msg.src(), cluster_name);
                return null;
              }
            }

            // add physical address and logical name of the discovery sender (if available) to the
            // cache
            if (data != null) {
              addDiscoveryResponseToCaches(
                  logical_addr, data.getLogicalName(), data.getPhysicalAddr());
              discoveryRequestReceived(msg.getSrc(), data.getLogicalName(), data.getPhysicalAddr());
              addResponse(data, false);
            }

            if (return_entire_cache) {
              Map<Address, PhysicalAddress> cache =
                  (Map<Address, PhysicalAddress>)
                      down(new Event(Event.GET_LOGICAL_PHYSICAL_MAPPINGS));
              if (cache != null) {
                for (Map.Entry<Address, PhysicalAddress> entry : cache.entrySet()) {
                  Address addr = entry.getKey();
                  // JGRP-1492: only return our own address, and addresses in view.
                  if (addr.equals(local_addr) || members.contains(addr)) {
                    PhysicalAddress physical_addr = entry.getValue();
                    sendDiscoveryResponse(
                        addr, physical_addr, UUID.get(addr), msg.getSrc(), isCoord(addr));
                  }
                }
              }
              return null;
            }

            // Only send a response if hdr.mbrs is not empty and contains myself. Otherwise always
            // send my info
            Collection<? extends Address> mbrs = data != null ? data.mbrs() : null;
            boolean send_response = mbrs == null || mbrs.contains(local_addr);
            if (send_response) {
              PhysicalAddress physical_addr =
                  (PhysicalAddress) down(new Event(Event.GET_PHYSICAL_ADDRESS, local_addr));
              sendDiscoveryResponse(
                  local_addr, physical_addr, UUID.get(local_addr), msg.getSrc(), is_coord);
            }
            return null;

          case PingHeader.GET_MBRS_RSP:
            // add physical address (if available) to transport's cache
            if (data != null) {
              log.trace("%s: received GET_MBRS_RSP from %s: %s", local_addr, msg.src(), data);
              handleDiscoveryResponse(data, msg.src());
            }
            return null;

          default:
            log.warn("got PING header with unknown type %d", hdr.type);
            return null;
        }

      case Event.FIND_MBRS:
        return findMembers(
            (List<Address>) evt.getArg(), false, true); // this is done asynchronously
    }

    return up_prot.up(evt);
  }