/**
* Tests a simple split: {A,B} and {C,D} need to merge back into one subgroup. Checks how many
* MergeViews are installed
*/
public void testSplitInTheMiddle2() throws Exception {
View v1 = View.create(a.getAddress(), 10, a.getAddress(), b.getAddress());
View v2 = View.create(c.getAddress(), 10, c.getAddress(), d.getAddress());
injectView(v1, a, b);
injectView(v2, c, d);
enableInfoSender(false, a, b, c, d);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, a, b);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, c, d);
enableInfoSender(false, a, b, c, d);
for (JChannel ch : Arrays.asList(a, b, c, d))
System.out.println(ch.getName() + ": " + ch.getView());
System.out.println("\nEnabling INFO sending in merge protocols to merge subclusters");
enableInfoSender(true, a, b, c, d);
Util.waitUntilAllChannelsHaveSameSize(30000, 1000, a, b, c, d);
System.out.println("\nResulting views:");
for (JChannel ch : Arrays.asList(a, b, c, d)) {
GMS gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
View mv = gms.view();
System.out.println(mv);
}
for (JChannel ch : Arrays.asList(a, b, c, d)) {
GMS gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
View mv = gms.view();
assert mv instanceof MergeView;
assert mv.size() == 4;
assert ((MergeView) mv).getSubgroups().size() == 2;
}
for (JChannel ch : Arrays.asList(a, b, c, d)) {
View view = ch.getView();
assert view.size() == 4 : "view should have 4 members: " + view;
}
}
public void testNullMessageToAll() throws Exception {
d1.setRequestHandler(new MyHandler(null));
c2 = createChannel(c1);
c2.setName("B");
disableBundling(c2);
long stop, start = System.currentTimeMillis();
d2 = new MessageDispatcher(c2, null, null, new MyHandler(null));
stop = System.currentTimeMillis();
c2.connect("MessageDispatcherUnitTest");
Assert.assertEquals(2, c2.getView().size());
System.out.println("view: " + c2.getView());
System.out.println("casting message");
start = System.currentTimeMillis();
RspList rsps = d1.castMessage(null, new Message(), new RequestOptions(ResponseMode.GET_ALL, 0));
stop = System.currentTimeMillis();
System.out.println("rsps:\n" + rsps);
System.out.println("call took " + (stop - start) + " ms");
assertNotNull(rsps);
Assert.assertEquals(2, rsps.size());
Rsp rsp = rsps.get(c1.getAddress());
assertNotNull(rsp);
Object ret = rsp.getValue();
assert ret == null;
rsp = rsps.get(c2.getAddress());
assertNotNull(rsp);
ret = rsp.getValue();
assert ret == null;
Util.close(c2);
}
public static void main(String[] args) throws Exception {
JChannel channel = new JChannel();
channel.setReceiver(
new ReceiverAdapter() {
public void receive(Message msg) {
Address sender = msg.getSrc();
System.out.println(msg.getObject() + " [" + sender + "]");
}
public void viewAccepted(View view) {
System.out.println("view: " + view);
}
});
channel.connect("ChatCluster");
System.out.println(
channel.getView().getCreator().equals(channel.getView().getMembers().get(0)));
for (; ; ) {
String line = Util.readStringFromStdin(": ");
channel.send(null, line);
}
}
/** Tests a merge between ViewIds of the same coord, e.g. A|6, A|7, A|8, A|9 */
public void testViewsBySameCoord() {
View v1 =
View.create(
a.getAddress(),
6,
a.getAddress(),
b.getAddress(),
c.getAddress(),
d.getAddress()); // {A,B,C,D}
View v2 =
View.create(a.getAddress(), 7, a.getAddress(), b.getAddress(), c.getAddress()); // {A,B,C}
View v3 = View.create(a.getAddress(), 8, a.getAddress(), b.getAddress()); // {A,B}
View v4 = View.create(a.getAddress(), 9, a.getAddress()); // {A}
Util.close(b, c, d); // not interested in those...
MERGE3 merge = (MERGE3) a.getProtocolStack().findProtocol(MERGE3.class);
for (View view : Arrays.asList(v1, v2, v4, v3)) {
MERGE3.MergeHeader hdr = MERGE3.MergeHeader.createInfo(view.getViewId(), null, null);
Message msg = new Message(null, a.getAddress(), null).putHeader(merge.getId(), hdr);
merge.up(new Event(Event.MSG, msg));
}
merge.checkInconsistencies(); // no merge will happen
Util.waitUntilAllChannelsHaveSameSize(10000, 500, a);
System.out.println("A's view: " + a.getView());
assert a.getView().size() == 1;
assert a.getView().containsMember(a.getAddress());
}
/** Tests the scenario described by Dan in https://issues.jboss.org/browse/JGRP-1876 */
public void testJGRP_1876_Dan() throws Exception {
Util.close(d, c, b, a);
s = createChannel("S", true);
t = createChannel("T", true);
u = createChannel("U", true);
v = createChannel("V", true);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, s, t, u, v);
enableInfoSender(false, s, t, u, v); // stops INFO sending in MERGE3
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);
enableInfoSender(false, s, t, u, v); // stops INFO sending in MERGE3
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());
enableInfoSender(true, s, t, u, v);
System.out.println("\nEnabling INFO sending in merge protocols to merge subclusters");
Util.waitUntilAllChannelsHaveSameSize(30000, 1000, s, t, u, v);
System.out.println("\nResulting views:");
for (JChannel ch : Arrays.asList(s, t, u, v)) {
GMS 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 = (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;
}
}
private void sendMessageToBothChannels(int size) throws Exception {
long start, stop;
d1.setRequestHandler(new MyHandler(new byte[size]));
c2 = createChannel(c1);
c2.setName("B");
disableBundling(c2);
d2 = new MessageDispatcher(c2, null, null, new MyHandler(new byte[size]));
c2.connect("MessageDispatcherUnitTest");
Assert.assertEquals(2, c2.getView().size());
System.out.println("casting message");
start = System.currentTimeMillis();
RspList rsps = d1.castMessage(null, new Message(), new RequestOptions(ResponseMode.GET_ALL, 0));
stop = System.currentTimeMillis();
System.out.println("rsps:\n" + rsps);
System.out.println("call took " + (stop - start) + " ms");
assertNotNull(rsps);
Assert.assertEquals(2, rsps.size());
Rsp rsp = rsps.get(c1.getAddress());
assertNotNull(rsp);
byte[] ret = (byte[]) rsp.getValue();
Assert.assertEquals(size, ret.length);
rsp = rsps.get(c2.getAddress());
assertNotNull(rsp);
ret = (byte[]) rsp.getValue();
Assert.assertEquals(size, ret.length);
Util.close(c2);
}
public void testFlushWithCrashedParticipants() throws Exception {
JChannel c1 = null;
JChannel c2 = null;
JChannel c3 = null;
try {
c1 = createChannel(true, 3, "C1");
changeProps(c1);
c1.connect("testFlushWithCrashedFlushCoordinator");
c2 = createChannel(c1, "C2");
changeProps(c2);
c2.connect("testFlushWithCrashedFlushCoordinator");
c3 = createChannel(c1, "C3");
changeProps(c3);
c3.connect("testFlushWithCrashedFlushCoordinator");
// and then kill members other than flush coordinator
Util.shutdown(c3);
Util.shutdown(c1);
// start flush
Util.startFlush(c2);
c2.stopFlush();
Util.waitUntilAllChannelsHaveSameSize(10000, 500, c2);
// cluster should not hang and one remaining member should have a correct view
assertTrue("correct view size", c2.getView().size() == 1);
} finally {
Util.close(c3, c2, c1);
}
}
void printView() {
System.out.println("\n-- view: " + channel.getView() + '\n');
try {
System.in.skip(System.in.available());
} catch (Exception e) {
}
}
private boolean checkViewSize(int expectedSize, JChannel... channels) {
boolean b = true;
for (JChannel ch : channels) {
b = b && ch.getView().size() == expectedSize;
}
return b;
}
/**
* Takes a membership of 10, e.g. {A,B,C,D,E,F,G,H,I,J}, creates multiple partitions (e.g.
* {A,B,C}, {D}, {E,F,G,H}, {I,J}), and merges them back into one cluster. Asserts that there's
* only 1 MergeView
*/
public void testMultipleSplits() throws Exception {
e = createChannel("E", true);
f = createChannel("F", true);
g = createChannel("G", true);
h = createChannel("H", true);
i = createChannel("I", true);
j = createChannel("J", true);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, a, b, c, d, e, f, g, h, i, j);
enableInfoSender(false, a, b, c, d, e, f, g, h, i, j); // stops INFO sending in MERGE3
for (JChannel ch : Arrays.asList(a, b, c, d, e, f, g, h, i, j))
System.out.println(ch.getName() + ": " + ch.getView());
List<View> partitions = createPartitions(4, a, b, c, d, e, f, g, h, i, j);
// Install views
for (View partition : partitions) {
for (Address mbr : partition.getMembersRaw()) {
JChannel ch = findChannel(mbr);
injectView(partition, ch);
}
}
System.out.printf("\n%d partitions:\n", partitions.size());
for (JChannel ch : Arrays.asList(a, b, c, d, e, f, g, h, i, j))
System.out.println(ch.getName() + ": " + ch.getView());
System.out.println("\nEnabling INFO sending in merge protocols to merge subclusters");
enableInfoSender(true, a, b, c, d, e, f, g, h, i, j);
Util.waitUntilAllChannelsHaveSameSize(30000, 1000, a, b, c, d, e, f, g, h, i, j);
System.out.println("\nResulting views:");
for (JChannel ch : Arrays.asList(a, b, c, d, e, f, g, h, i, j)) {
GMS gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
View mv = gms.view();
System.out.println(mv);
}
for (JChannel ch : Arrays.asList(a, b, c, d, e, f, g, h, i, j)) {
GMS gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
View mv = gms.view();
assert mv instanceof MergeView;
assert mv.size() == 10;
assert ((MergeView) mv).getSubgroups().size() == partitions.size();
}
for (JChannel ch : Arrays.asList(a, b, c, d, e, f, g, h, i, j)) {
View view = ch.getView();
assert view.size() == 10 : "view should have 10 members: " + view;
}
}
/**
* Tests A|6, A|7, A|8 and B|7, B|8, B|9 -> we should have a subviews in MergeView consisting of
* only 2 elements: A|5 and B|5
*/
public void testMultipleViewsBySameMembers() throws Exception {
View a1 =
View.create(
a.getAddress(),
6,
a.getAddress(),
b.getAddress(),
c.getAddress(),
d.getAddress()); // {A,B,C,D}
View a2 =
View.create(a.getAddress(), 7, a.getAddress(), b.getAddress(), c.getAddress()); // {A,B,C}
View a3 = View.create(a.getAddress(), 8, a.getAddress(), b.getAddress()); // {A,B}
View a4 = View.create(a.getAddress(), 9, a.getAddress()); // {A}
View b1 = View.create(b.getAddress(), 7, b.getAddress(), c.getAddress(), d.getAddress());
View b2 = View.create(b.getAddress(), 8, b.getAddress(), c.getAddress());
View b3 = View.create(b.getAddress(), 9, b.getAddress());
Util.close(c, d); // not interested in those...
// A and B cannot communicate:
discard(true, a, b);
// inject view A|6={A} into A and B|5={B} into B
injectView(a4, a);
injectView(b3, b);
assert a.getView().equals(a4);
assert b.getView().equals(b3);
List<Event> merge_events = new ArrayList<>();
for (View view : Arrays.asList(a3, a4, a2, a1)) {
MERGE3.MergeHeader hdr = MERGE3.MergeHeader.createInfo(view.getViewId(), null, null);
Message msg = new Message(null, a.getAddress(), null).putHeader(merge_id, hdr);
merge_events.add(new Event(Event.MSG, msg));
}
for (View view : Arrays.asList(b2, b3, b1)) {
MERGE3.MergeHeader hdr = MERGE3.MergeHeader.createInfo(view.getViewId(), null, null);
Message msg = new Message(null, b.getAddress(), null).putHeader(merge_id, hdr);
merge_events.add(new Event(Event.MSG, msg));
}
// A and B can communicate again
discard(false, a, b);
injectMergeEvents(merge_events, a, b);
checkInconsistencies(a, b); // merge will happen between A and B
Util.waitUntilAllChannelsHaveSameSize(10000, 500, a, b);
System.out.println("A's view: " + a.getView() + "\nB's view: " + b.getView());
assert a.getView().size() == 2;
assert a.getView().containsMember(a.getAddress());
assert a.getView().containsMember(b.getAddress());
assert a.getView().equals(b.getView());
for (View merge_view : Arrays.asList(getViewFromGMS(a), getViewFromGMS(b))) {
System.out.println(merge_view);
assert merge_view instanceof MergeView;
List<View> subviews = ((MergeView) merge_view).getSubgroups();
assert subviews.size() == 2;
}
}
private Address getAddress(String nodeName) {
for (Address member : channel.getView()) {
if (channel.getName(member).equals(nodeName)) {
return member;
}
}
throw new IllegalArgumentException(
"Given node doesn't seem to be a member of the DistributedCommandBus");
}
public void testSASLDigestMD5Merge() throws Exception {
a = createChannel("A", "DIGEST-MD5", "jack");
b = createChannel("B", "DIGEST-MD5", "jack");
a.connect("SaslTest");
b.connect("SaslTest");
assertTrue(b.isConnected());
print(a, b);
createPartitions(a, b);
print(a, b);
assertTrue(checkViewSize(1, a, b));
dropDiscard(a, b);
mergePartitions(a, b);
for (int i = 0; i < 10 && !checkViewSize(2, a, b); i++) {
Util.sleep(500);
}
assertTrue(viewContains(a.getView(), a, b));
assertTrue(viewContains(b.getView(), a, b));
}
/** A: {A,B} B: {A,B} C: {C} C receives INFO from B only */
public void testMergeWithIncompleteInfos() throws Exception {
Util.close(d);
enableInfoSender(false, a, b, c);
View one = View.create(a.getAddress(), 10, a.getAddress(), b.getAddress());
View two = View.create(c.getAddress(), 10, c.getAddress());
injectView(one, a, b);
injectView(two, c);
enableInfoSender(false, a, b, c);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, a, b);
Util.waitUntilAllChannelsHaveSameSize(10000, 500, c);
System.out.printf("\nPartitions:\n");
for (JChannel ch : Arrays.asList(a, b, c))
System.out.println(ch.getName() + ": " + ch.getView());
MERGE3.MergeHeader hdr = MERGE3.MergeHeader.createInfo(one.getViewId(), null, null);
Message msg =
new Message(null, b.getAddress(), null)
.putHeader(merge_id, hdr); // B sends the INFO message to C
Event merge_event = new Event(Event.MSG, msg);
MERGE3 merge = (MERGE3) c.getProtocolStack().findProtocol(MERGE3.class);
merge.up(merge_event);
enableInfoSender(true, a, b, c);
System.out.println("\nEnabling INFO sending in merge protocols to merge subclusters");
Util.waitUntilAllChannelsHaveSameSize(30000, 1000, a, b, c);
System.out.println("\nResulting views:");
for (JChannel ch : Arrays.asList(a, b, c)) {
GMS gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
View mv = gms.view();
System.out.println(mv);
}
for (JChannel ch : Arrays.asList(a, b, c)) {
GMS gms = (GMS) ch.getProtocolStack().findProtocol(GMS.class);
View mv = gms.view();
assert mv instanceof MergeView;
assert mv.size() == 3;
assert ((MergeView) mv).getSubgroups().size() == 2;
}
for (JChannel ch : Arrays.asList(a, b, c)) {
View view = ch.getView();
assert view.size() == 3 : "view should have 3 members: " + view;
}
}
private static void injectView(View view, JChannel... channels) {
for (JChannel ch : channels) {
ch.down(new Event(Event.VIEW_CHANGE, view));
ch.up(new Event(Event.VIEW_CHANGE, view));
}
for (JChannel ch : channels) {
MyReceiver receiver = (MyReceiver) ch.getReceiver();
System.out.println("[" + receiver.name + "] view=" + ch.getView());
}
}
void setAnycastCount() throws Exception {
int tmp = Util.readIntFromStdin("Anycast count: ");
View view = channel.getView();
if (tmp > view.size()) {
System.err.println(
"anycast count must be smaller or equal to the view size (" + view + ")\n");
return;
}
disp.callRemoteMethods(null, new MethodCall(SET_ANYCAST_COUNT, tmp), RequestOptions.SYNC());
}
/** Picks the next member in the view */
private Address getReceiver() {
try {
List<Address> mbrs = channel.getView().getMembers();
int index = mbrs.indexOf(local_addr);
int new_index = index + 1 % mbrs.size();
return mbrs.get(new_index);
} catch (Exception e) {
System.err.println("UPerf.getReceiver(): " + e);
return null;
}
}
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());
}
public void testFlushWithCrashedFlushCoordinator() throws Exception {
JChannel a = null, b = null, c = null;
try {
a = createChannel(true, 3, "A");
changeProps(a);
a.connect("testFlushWithCrashedFlushCoordinator");
b = createChannel(a, "B");
changeProps(b);
b.connect("testFlushWithCrashedFlushCoordinator");
c = createChannel(a, "C");
changeProps(c);
c.connect("testFlushWithCrashedFlushCoordinator");
System.out.println("shutting down flush coordinator B");
b.down(new Event(Event.SUSPEND_BUT_FAIL)); // send out START_FLUSH and then return
// now shut down B. This means, after failure detection kicks in and the new coordinator takes
// over
// (either A or C), that the current flush started by B will be cancelled and a new flush (by
// A or C)
// will be started
Util.shutdown(b);
a.getProtocolStack().findProtocol(FLUSH.class).setLevel("debug");
c.getProtocolStack().findProtocol(FLUSH.class).setLevel("debug");
Util.waitUntilAllChannelsHaveSameSize(10000, 500, a, c);
// cluster should not hang and two remaining members should have a correct view
assertTrue("correct view size", a.getView().size() == 2);
assertTrue("correct view size", c.getView().size() == 2);
a.getProtocolStack().findProtocol(FLUSH.class).setLevel("warn");
c.getProtocolStack().findProtocol(FLUSH.class).setLevel("warn");
} finally {
Util.close(c, b, a);
}
}
public void testFlushWithCrashedParticipant() throws Exception {
JChannel c1 = null;
JChannel c2 = null;
JChannel c3 = null;
try {
c1 = createChannel(true, 3, "C1");
changeProps(c1);
c1.connect("testFlushWithCrashedParticipant");
c2 = createChannel(c1, "C2");
changeProps(c2);
c2.connect("testFlushWithCrashedParticipant");
c3 = createChannel(c1, "C3");
changeProps(c3);
c3.connect("testFlushWithCrashedParticipant");
System.out.println("shutting down C3");
Util.shutdown(c3); // kill a flush participant
System.out.println("C2: starting flush");
boolean rc = Util.startFlush(c2);
System.out.println("flush " + (rc ? " was successful" : "failed"));
assert rc;
System.out.println("stopping flush");
c2.stopFlush();
System.out.println("waiting for view to contain C1 and C2");
Util.waitUntilAllChannelsHaveSameSize(10000, 500, c1, c2);
// cluster should not hang and two remaining members should have a correct view
System.out.println("C1: view=" + c1.getView() + "\nC2: view=" + c2.getView());
assertTrue("correct view size", c1.getView().size() == 2);
assertTrue("correct view size", c2.getView().size() == 2);
} finally {
Util.close(c3, c2, c1);
}
}
/**
* When we flush the server queue and one or more of the delivered messages triggers a response
* (in the same thread), we need to make sure the channel is connected, or else the JOIN will fail
* as the exception happens on the same thread. Note that the suggested fix on JGRP-1522 will
* solve this. Issue: https://issues.jboss.org/browse/JGRP-1522
*/
@BMScript(dir = "scripts/BecomeServerTest", value = "testSendingOfMsgsOnUnconnectedChannel")
public void testSendingOfMsgsOnUnconnectedChannel() throws Exception {
a = createChannel("A");
a.setReceiver(
new ReceiverAdapter() {
public void receive(Message msg) {
System.out.println("A: received message from " + msg.getSrc() + ": " + msg.getObject());
}
});
a.connect("BecomeServerTest");
new Thread("MsgSender-A") {
public void run() {
sendMessage(a, "hello from A"); // will be blocked by byteman rendezvous
}
}.start();
b = createChannel("B");
b.setReceiver(
new ReceiverAdapter() {
public void receive(Message msg) {
System.out.println("B: received message from " + msg.getSrc() + ": " + msg.getObject());
if (msg.getSrc().equals(a.getAddress())) {
try {
b.send(
null,
"This message would trigger an exception if the channel was not yet connected");
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
});
b.connect("BecomeServerTest");
Util.waitUntilAllChannelsHaveSameSize(20000, 1000, a, b);
System.out.println("\nA: " + a.getView() + "\nB: " + b.getView());
}
/**
* Verifies that unicasts are received correctly by all participants after an overlapping merge.
* The following steps are executed:
*
* <ol>
* <li/>Group is {A,B,C}, A is the coordinator
* <li/>MERGE2 is removed from all members
* <li/>VERIFY_SUSPECT is removed from all members
* <li/>Everyone sends 5 unicast messages to everyone else
* <li/>A VIEW(B,C) is injected into B and C
* <li/>B and C install {B,C}
* <li/>B and C trash the connection table for A in UNICAST
* <li/>A still has view {A,B,C} and all connection tables intact in UNICAST
* <li/>We now send N unicasts from everyone to everyone else, all the unicasts should be
* received.
* </ol>
*/
public void testWithViewBC() throws Exception {
System.out.println("A's view: " + a.getView());
// Inject view {B,C} into B and C:
View new_view = Util.createView(b.getAddress(), 10, b.getAddress(), c.getAddress());
injectView(new_view, b, c);
assertEquals("A's view is " + a.getView(), 3, a.getView().size());
assertEquals("B's view is " + b.getView(), 2, b.getView().size());
assertEquals("C's view is " + c.getView(), 2, c.getView().size());
sendAndCheckMessages(5, a, b, c);
}
public int numLocalInstances() {
java.util.List<Address> members = channel.getView().getMembers();
int instances = 0;
java.util.Iterator<Address> it = members.iterator();
while (it.hasNext()) {
Address addr = it.next();
UUID uuid = (UUID) addr;
if (uuid.toString().startsWith(hostName)) {
instances++;
}
}
return instances;
}
@BeforeMethod
void init() throws Exception {
a = createChannel(true, 2);
a.setName("A");
b = createChannel(a);
b.setName("B");
setOOBPoolSize(a, b);
setStableGossip(a, b);
a.connect("OOBTest");
b.connect("OOBTest");
View view = b.getView();
System.out.println("view = " + view);
Util.waitUntilAllChannelsHaveSameSize(20000, 1000, a, b);
}
@BeforeMethod
public void init() throws Exception {
c1 = createChannel(true, 2);
c1.setName("C1");
c2 = createChannel(c1);
c2.setName("C2");
setOOBPoolSize(c1, c2);
setStableGossip(c1, c2);
c1.connect("OOBTest");
c2.connect("OOBTest");
View view = c2.getView();
log.info("view = " + view);
Util.waitUntilAllChannelsHaveSameSize(20000, 1000, c1, c2);
}
@BeforeMethod
public void init() throws Exception {
c1 = createChannel(true, 2);
c1.setName("C1");
c2 = createChannel(c1);
c2.setName("C2");
setOOBPoolSize(c1, c2);
setStableGossip(c1, c2);
c1.connect("OOBTest");
c2.connect("OOBTest");
View view = c2.getView();
log.info("view = " + view);
assert view.size() == 2 : "view is " + view;
}
/**
* Creates a list of randomly generated partitions, each having a max size of max_partition_size
*/
protected List<View> createPartitions(int max_partition_size, JChannel... channels) {
long view_id = 1;
for (JChannel ch : channels) view_id = Math.max(view_id, ch.getView().getViewId().getId());
List<View> partitions = new ArrayList<>();
List<Address> tmp = new ArrayList<>();
for (JChannel ch : channels) tmp.add(ch.getAddress());
while (!tmp.isEmpty()) {
int num_to_remove = (int) Util.random(max_partition_size);
List<Address> part = new ArrayList<>(max_partition_size);
for (int x = 0; x < num_to_remove && !tmp.isEmpty(); x++) part.add(tmp.remove(0));
partitions.add(new View(part.get(0), view_id + 1, part));
}
return partitions;
}
@BeforeMethod
void setUp() throws Exception {
System.out.print("Connecting channels: ");
a = createChannel("A");
disp_a = new MessageDispatcher(a, null, null);
a.connect(RpcLockingTest.class.getSimpleName());
lock_a = new LockService(a).getLock("lock");
b = createChannel("B");
disp_b = new MessageDispatcher(b, null, null);
b.connect(RpcLockingTest.class.getSimpleName());
lock_b = new LockService(b).getLock("lock");
Util.waitUntilAllChannelsHaveSameSize(30000, 1000, a, b);
System.out.println("");
disp_a.setRequestHandler(
new RequestHandler() {
@Override
public Object handle(Message arg0) throws Exception {
System.out.println("A received a message, will now try to lock the lock");
if (lock_a.tryLock()) {
Assert.fail("Should not be able to lock the lock here");
System.out.println("A aquired the lock, this shouldn't be possible");
} else System.out.println("The lock was already locked, as it should be");
return "Hello";
}
});
disp_b.setRequestHandler(
new RequestHandler() {
@Override
public Object handle(Message arg0) throws Exception {
System.out.println("B received a message, will now try to lock the lock");
if (lock_b.tryLock()) {
Assert.fail("Should not be able to lock the lock here");
System.out.println("B aquired the lock, this shouldn't be possible");
} else System.out.println("The lock already was locked, as it should be");
return "Hello";
}
});
// Print who is the coordinator
if (b.getView().getMembers().get(0).equals(b.getAddress()))
System.out.println("B is the coordinator");
else System.out.println("A is the coordinator");
System.out.println("");
}
private static void mergePartitions(JChannel... channels) throws Exception {
Membership membership = new Membership();
for (JChannel ch : channels) {
membership.add(ch.getAddress());
}
membership.sort();
Address leaderAddress = membership.elementAt(0);
JChannel leader = findChannelByAddress(leaderAddress, channels);
GMS gms = (GMS) leader.getProtocolStack().findProtocol(GMS.class);
gms.setLevel("trace");
Map<Address, View> views = new HashMap<>();
for (JChannel ch : channels) {
views.put(ch.getAddress(), ch.getView());
}
gms.up(new Event(Event.MERGE, views));
}
public void testLifecycle() throws Exception {
fc1 = new ForkChannel(ch, "stack", "fc1");
assert fc1.isOpen() && !fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
ch.connect(CLUSTER);
assert fc1.isOpen() && !fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
fc1.connect("bla");
assert fc1.isOpen() && fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
assert ch.getAddress().equals(fc1.getAddress());
assert ch.getClusterName().equals(fc1.getClusterName());
assert ch.getView().equals(fc1.getView());
fc1.disconnect();
assert fc1.isOpen() && !fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
fc1.connect("foobar");
assert fc1.isOpen() && fc1.isConnected() && !fc1.isClosed() : "state=" + fc1.getState();
Util.close(fc1);
assert !fc1.isOpen() && !fc1.isConnected() && fc1.isClosed() : "state=" + fc1.getState();
try {
fc1.connect("whocares");
assert false : "a closed fork channel cannot be reconnected";
} catch (Exception ex) {
assert ex instanceof IllegalStateException;
}
assert !fc1.isOpen() && !fc1.isConnected() && fc1.isClosed() : "state=" + fc1.getState();
Util.close(ch);
assert !fc1.isOpen() && !fc1.isConnected() && fc1.isClosed() : "state=" + fc1.getState();
try {
fc1.send(null, "hello");
assert false
: "sending on a fork-channel with a disconnected main-channel should throw an exception";
} catch (Throwable t) {
System.out.println(
"got an exception (as expected) sending on a fork-channel where the main-channel is disconnected: "
+ t);
}
}