/**
* Disseminates cache information (UUID/IP adddress/port/name) to the given members
*
* @param current_mbrs The current members. Guaranteed to be non-null. This is a copy and can be
* modified.
* @param left_mbrs The members which left. These are excluded from dissemination. Can be null if
* no members left
* @param new_mbrs The new members that we need to disseminate the information to. Will be all
* members if null.
*/
protected void disseminateDiscoveryInformation(
List current_mbrs, List<Address> left_mbrs, List<Address> new_mbrs) {
if (new_mbrs == null || new_mbrs.isEmpty()) return;
if (local_addr != null) current_mbrs.remove(local_addr);
if (left_mbrs != null) current_mbrs.removeAll(left_mbrs);
// 1. Send information about <everyone - self - left_mbrs> to new_mbrs
Set<Address> info = new HashSet<>(current_mbrs);
for (Address addr : info) {
PhysicalAddress phys_addr =
(PhysicalAddress) down_prot.down(new Event(Event.GET_PHYSICAL_ADDRESS, addr));
if (phys_addr == null) continue;
boolean is_coordinator = isCoord(addr);
for (Address target : new_mbrs)
sendDiscoveryResponse(addr, phys_addr, UUID.get(addr), target, is_coordinator);
}
// 2. Send information about new_mbrs to <everyone - self - left_mbrs - new_mbrs>
Set<Address> targets = new HashSet<>(current_mbrs);
targets.removeAll(new_mbrs);
if (!targets.isEmpty()) {
for (Address addr : new_mbrs) {
PhysicalAddress phys_addr =
(PhysicalAddress) down_prot.down(new Event(Event.GET_PHYSICAL_ADDRESS, addr));
if (phys_addr == null) continue;
boolean is_coordinator = isCoord(addr);
for (Address target : targets)
sendDiscoveryResponse(addr, phys_addr, UUID.get(addr), target, is_coordinator);
}
}
}
public static void testAll() {
List<String> l = new ArrayList<>();
l.add("one");
l.add("two");
l.add("one");
System.out.println("-- list is " + l);
assert !(Util.all(l, "one"));
l.remove("two");
System.out.println("-- list is " + l);
assert Util.all(l, "one");
}
public void addResponse(PingData rsp, boolean overwrite) {
if (rsp == null) return;
promise.getLock().lock();
try {
if (overwrite) ping_rsps.remove(rsp);
// https://jira.jboss.org/jira/browse/JGRP-1179
int index = ping_rsps.indexOf(rsp);
if (index == -1) {
ping_rsps.add(rsp);
promise.getCond().signalAll();
} else if (rsp.isCoord()) {
PingData pr = ping_rsps.get(index);
// Check if the already existing element is not server
if (!pr.isCoord()) {
ping_rsps.set(index, rsp);
promise.getCond().signalAll();
}
}
} finally {
promise.getLock().unlock();
}
}
public boolean removeAddressGenerator(AddressGenerator address_generator) {
return address_generator != null
&& address_generators != null
&& address_generators.remove(address_generator);
}
/** @return true if the channel was removed indeed. */
public boolean removeChannelListener(ChannelListener l) {
synchronized (additionalChannelListeners) {
return additionalChannelListeners.remove(l);
}
}
protected <T> GroupRequest<T> cast(
final Collection<Address> dests,
Message msg,
RequestOptions options,
boolean block_for_results,
FutureListener<RspList<T>> listener)
throws Exception {
if (msg.getDest() != null && !(msg.getDest() instanceof AnycastAddress))
throw new IllegalArgumentException("message destination is non-null, cannot send message");
if (options != null) {
msg.setFlag(options.getFlags()).setTransientFlag(options.getTransientFlags());
if (options.getScope() > 0) msg.setScope(options.getScope());
}
List<Address> real_dests;
// we need to clone because we don't want to modify the original
if (dests != null) {
real_dests = new ArrayList<Address>();
for (Address dest : dests) {
if (dest instanceof SiteAddress || this.members.contains(dest)) {
if (!real_dests.contains(dest)) real_dests.add(dest);
}
}
} else real_dests = new ArrayList<Address>(members);
// if local delivery is off, then we should not wait for the message from the local member.
// therefore remove it from the membership
Channel tmp = channel;
if ((tmp != null && tmp.getDiscardOwnMessages())
|| msg.isTransientFlagSet(Message.TransientFlag.DONT_LOOPBACK)) {
if (local_addr == null) local_addr = tmp != null ? tmp.getAddress() : null;
if (local_addr != null) real_dests.remove(local_addr);
}
if (options != null && options.hasExclusionList()) {
Address[] exclusion_list = options.exclusionList();
for (Address excluding : exclusion_list) real_dests.remove(excluding);
}
// don't even send the message if the destination list is empty
if (log.isTraceEnabled()) log.trace("real_dests=" + real_dests);
if (real_dests.isEmpty()) {
if (log.isTraceEnabled()) log.trace("destination list is empty, won't send message");
return null;
}
if (options != null) {
boolean async = options.getMode() == ResponseMode.GET_NONE;
if (options.getAnycasting()) {
if (async) async_anycasts.incrementAndGet();
else sync_anycasts.incrementAndGet();
} else {
if (async) async_multicasts.incrementAndGet();
else sync_multicasts.incrementAndGet();
}
}
GroupRequest<T> req = new GroupRequest<T>(msg, corr, real_dests, options);
if (listener != null) req.setListener(listener);
if (options != null) {
req.setResponseFilter(options.getRspFilter());
req.setAnycasting(options.getAnycasting());
}
req.setBlockForResults(block_for_results);
req.execute();
return req;
}
