public void testMergeWithAsymetricViewsCoordIsolated() {
// Isolate the coord
Address coord = a.getView().getCreator();
System.out.println("Isolating coord: " + coord);
List<Address> members = new ArrayList<>();
members.add(coord);
View coord_view = new View(coord, 4, members);
System.out.println("coord_view: " + coord_view);
Channel coord_channel = findChannel(coord);
System.out.println("coord_channel: " + coord_channel.getAddress());
MutableDigest digest = new MutableDigest(coord_view.getMembersRaw());
NAKACK2 nakack = (NAKACK2) coord_channel.getProtocolStack().findProtocol(NAKACK2.class);
digest.merge(nakack.getDigest(coord));
GMS gms = (GMS) coord_channel.getProtocolStack().findProtocol(GMS.class);
gms.installView(coord_view, digest);
System.out.println("gms.getView() " + gms.getView());
System.out.println("Views are:");
for (JChannel ch : Arrays.asList(a, b, c, d))
System.out.println(ch.getAddress() + ": " + ch.getView());
JChannel merge_leader = findChannel(coord);
MyReceiver receiver = new MyReceiver();
merge_leader.setReceiver(receiver);
System.out.println("merge_leader: " + merge_leader.getAddressAsString());
System.out.println("Injecting MERGE event into merge leader " + merge_leader.getAddress());
Map<Address, View> merge_views = new HashMap<>(4);
merge_views.put(a.getAddress(), a.getView());
merge_views.put(b.getAddress(), b.getView());
merge_views.put(c.getAddress(), c.getView());
merge_views.put(d.getAddress(), d.getView());
gms = (GMS) merge_leader.getProtocolStack().findProtocol(GMS.class);
gms.up(new Event(Event.MERGE, merge_views));
Util.waitUntilAllChannelsHaveSameSize(10000, 1000, a, b, c, d);
System.out.println("Views are:");
for (JChannel ch : Arrays.asList(a, b, c, d)) {
View view = ch.getView();
System.out.println(ch.getAddress() + ": " + view);
assert view.size() == 4;
}
MergeView merge_view = receiver.getView();
System.out.println("merge_view = " + merge_view);
assert merge_view.size() == 4;
assert merge_view.getSubgroups().size() == 2;
for (View view : merge_view.getSubgroups())
assert contains(view, a.getAddress())
|| contains(view, b.getAddress(), c.getAddress(), d.getAddress());
}
/**
* Tests the scenario described by Dan in https://issues.jboss.org/browse/JGRP-1876; INFO messages
* are injected
*/
public void testJGRP_1876_Dan2() throws Exception {
Util.close(d, c, b, a);
s = createChannel("S", false);
t = createChannel("T", false);
u = createChannel("U", false);
v = createChannel("V", false);
for (JChannel ch : Arrays.asList(s, t, u, v))
ch.getProtocolStack().removeProtocol(MERGE3.class);
s.connect("MergeTest4");
t.connect("MergeTest4");
u.connect("MergeTest4");
v.connect("MergeTest4");
Util.waitUntilAllChannelsHaveSameSize(10000, 500, s, t, u, v);
for (JChannel ch : Arrays.asList(s, t, u, v))
System.out.println(ch.getName() + ": " + ch.getView());
View v1 = View.create(s.getAddress(), 10, s.getAddress());
View v2 = View.create(t.getAddress(), 10, t.getAddress());
View v3 = View.create(u.getAddress(), 11, u.getAddress(), v.getAddress());
injectView(v1, s);
injectView(v2, t);
injectView(v3, u, v);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, s);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, t);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, u, v);
System.out.printf("\nPartitions:\n");
for (JChannel ch : Arrays.asList(s, t, u, v))
System.out.println(ch.getName() + ": " + ch.getView());
System.out.println("\nInjecting MERGE events into GMS to merge subclusters");
Map<Address, View> different_views = new HashMap<>();
different_views.put(s.getAddress(), v1);
different_views.put(t.getAddress(), v2);
different_views.put(v.getAddress(), v3);
Collection<Address> coords = Util.determineActualMergeCoords(different_views);
Address merge_leader = new Membership().add(coords).sort().elementAt(0);
System.out.printf("--> coords=%s, merge_leader=%s\n", coords, merge_leader);
GMS gms = (GMS) findChannel(merge_leader).getProtocolStack().findProtocol(GMS.class);
gms.up(new Event(Event.MERGE, different_views));
Util.waitUntilAllChannelsHaveSameSize(30000, 1000, s, t, u, v);
System.out.println("\nResulting views:");
for (JChannel ch : Arrays.asList(s, t, u, v)) {
gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
View mv = gms.view();
System.out.println(mv);
}
for (JChannel ch : Arrays.asList(s, t, u, v)) {
gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
View mv = gms.view();
assert mv instanceof MergeView;
assert mv.size() == 4;
assert ((MergeView) mv).getSubgroups().size() == 3;
}
for (JChannel ch : Arrays.asList(s, t, u, v)) {
View view = ch.getView();
assert view.size() == 4 : "view should have 4 members: " + view;
}
}