void sendMultipleUdpMessages(Message msg, Vector dests) { Address dest; for (int i = 0; i < dests.size(); i++) { dest = (Address) dests.elementAt(i); msg.setDest(dest); try { sendUdpMessage(msg); } catch (Exception e) { Trace.debug("UDP.sendMultipleUdpMessages()", "exception=" + e); } } }
/** * Merge all MergeData. All MergeData elements should be disjunct (both views and digests). * However, this method is prepared to resolve duplicate entries (for the same member). * Resolution strategy for views is to merge only 1 of the duplicate members. Resolution * strategy for digests is to take the higher seqnos for duplicate digests. * * <p>After merging all members into a Membership and subsequent sorting, the first member of * the sorted membership will be the new coordinator. This method has a lock on merge_rsps. * * @param merge_rsps A list of MergeData items. Elements with merge_rejected=true were removed * before. Is guaranteed not to be null and to contain at least 1 member. */ private MergeData consolidateMergeData(Vector<MergeData> merge_rsps) { long logical_time = 0; // for new_vid Membership new_mbrs = new Membership(); Vector<View> subgroups = new Vector<View>(11); // contains a list of Views, each View is a subgroup for (MergeData tmp_data : merge_rsps) { View tmp_view = tmp_data.getView(); if (tmp_view != null) { ViewId tmp_vid = tmp_view.getVid(); if (tmp_vid != null) { // compute the new view id (max of all vids +1) logical_time = Math.max(logical_time, tmp_vid.getId()); } // merge all membership lists into one (prevent duplicates) new_mbrs.add(tmp_view.getMembers()); subgroups.addElement((View) tmp_view.clone()); } } // the new coordinator is the first member of the consolidated & sorted membership list new_mbrs.sort(); Address new_coord = new_mbrs.size() > 0 ? new_mbrs.elementAt(0) : null; if (new_coord == null) { if (log.isErrorEnabled()) log.error("new_coord == null"); return null; } // should be the highest view ID seen up to now plus 1 ViewId new_vid = new ViewId(new_coord, logical_time + 1); // determine the new view MergeView new_view = new MergeView(new_vid, new_mbrs.getMembers(), subgroups); // determine the new digest Digest new_digest = consolidateDigests(merge_rsps, new_mbrs.size()); if (new_digest == null) { if (log.isErrorEnabled()) log.error("Merge leader " + gms.local_addr + ": could not consolidate digest for merge"); return null; } if (log.isDebugEnabled()) log.debug( "Merge leader " + gms.local_addr + ": consolidated view=" + new_view + "\nconsolidated digest=" + new_digest); return new MergeData(gms.local_addr, new_view, new_digest); }
void handleDownEvent(Event evt) { switch (evt.getType()) { case Event.TMP_VIEW: case Event.VIEW_CHANGE: synchronized (members) { members.removeAllElements(); Vector tmpvec = ((View) evt.getArg()).getMembers(); for (int i = 0; i < tmpvec.size(); i++) { members.addElement(tmpvec.elementAt(i)); } } break; case Event.GET_LOCAL_ADDRESS: // return local address -> Event(SET_LOCAL_ADDRESS, local) passUp(new Event(Event.SET_LOCAL_ADDRESS, local_addr)); break; case Event.CONNECT: group_addr = (String) evt.getArg(); udp_hdr = new UdpHeader(group_addr); // removed March 18 2003 (bela), not needed (handled by GMS) // changed July 2 2003 (bela): we discard CONNECT_OK at the GMS level anyway, this might // be needed if we run without GMS though passUp(new Event(Event.CONNECT_OK)); break; case Event.DISCONNECT: passUp(new Event(Event.DISCONNECT_OK)); break; case Event.CONFIG: if (Trace.trace) { Trace.info("UDP.down()", "received CONFIG event: " + evt.getArg()); } handleConfigEvent((HashMap) evt.getArg()); break; } }