public MessageDispatcher(Channel channel, MessageListener l, MembershipListener l2) {
this.channel = channel;
prot_adapter = new ProtocolAdapter();
if (channel != null) {
local_addr = channel.getAddress();
channel.addChannelListener(this);
}
setMessageListener(l);
setMembershipListener(l2);
if (channel != null) installUpHandler(prot_adapter, true);
start();
}
public void setChannel(Channel ch) {
if (ch == null) return;
this.channel = ch;
local_addr = channel.getAddress();
if (prot_adapter == null) prot_adapter = new ProtocolAdapter();
// Don't force installing the UpHandler so subclasses can use this
// method and still integrate with a MuxUpHandler
installUpHandler(prot_adapter, false);
}
public void stop() {
if (corr != null) corr.stop();
if (channel instanceof JChannel) {
TP transport = channel.getProtocolStack().getTransport();
transport.unregisterProbeHandler(probe_handler);
corr.unregisterProbeHandler(transport);
}
}
@Deprecated
public RpcDispatcher(
Channel channel,
MessageListener l,
MembershipListener l2,
Object server_obj,
boolean deadlock_detection) {
super(channel, l, l2);
channel.addChannelListener(this);
this.server_obj = server_obj;
}
public void start() {
if (corr == null)
corr =
createRequestCorrelator(prot_adapter, this, local_addr)
.asyncDispatching(async_dispatching);
correlatorStarted();
corr.start();
if (channel != null) {
List<Address> tmp_mbrs = channel.getView() != null ? channel.getView().getMembers() : null;
setMembers(tmp_mbrs);
if (channel instanceof JChannel) {
TP transport = channel.getProtocolStack().getTransport();
corr.registerProbeHandler(transport);
}
TP transport = channel.getProtocolStack().getTransport();
hardware_multicast_supported = transport.supportsMulticasting();
transport.registerProbeHandler(probe_handler);
}
}
@Deprecated
public RpcDispatcher(
Channel channel,
MessageListener l,
MembershipListener l2,
Object server_obj,
boolean deadlock_detection,
boolean concurrent_processing) {
super(channel, l, l2, false, concurrent_processing);
channel.addChannelListener(this);
this.server_obj = server_obj;
}
/**
* Sets the given UpHandler as the UpHandler for the channel, or, if the channel already has a
* Muxer installed as it's UpHandler, sets the given handler as the Muxer's {@link
* Muxer#setDefaultHandler(Object) default handler}. If the relevant handler is already installed,
* the <code>canReplace</code> controls whether this method replaces it (after logging a WARN) or
* simply leaves <code>handler</code> uninstalled.
*
* <p>Passing <code>false</code> as the <code>canReplace</code> value allows callers to use this
* method to install defaults without concern about inadvertently overriding
*
* @param handler the UpHandler to install
* @param canReplace <code>true</code> if an existing Channel upHandler or Muxer default upHandler
* can be replaced; <code>false</code> if this method shouldn't install
*/
protected void installUpHandler(UpHandler handler, boolean canReplace) {
UpHandler existing = channel.getUpHandler();
if (existing == null) {
channel.setUpHandler(handler);
} else if (existing instanceof Muxer<?>) {
@SuppressWarnings("unchecked")
Muxer<UpHandler> mux = (Muxer<UpHandler>) existing;
if (mux.getDefaultHandler() == null) {
mux.setDefaultHandler(handler);
} else if (canReplace) {
log.warn(
"Channel Muxer already has a default up handler installed ("
+ mux.getDefaultHandler()
+ ") but now it is being overridden");
mux.setDefaultHandler(handler);
}
} else if (canReplace) {
log.warn(
"Channel already has an up handler installed ("
+ existing
+ ") but now it is being overridden");
channel.setUpHandler(handler);
}
}
@Deprecated
public RpcDispatcher(
PullPushAdapter adapter,
Serializable id,
MessageListener l,
MembershipListener l2,
Object server_obj) {
super(adapter, id, l, l2);
// Fixes bug #804956
// channel.setChannelListener(this);
if (this.adapter != null) {
Transport t = this.adapter.getTransport();
if (t != null && t instanceof Channel) {
((Channel) t).addChannelListener(this);
}
}
this.server_obj = server_obj;
}
public RpcDispatcher(
Channel channel, MessageListener l, MembershipListener l2, Object server_obj) {
super(channel, l, l2);
channel.addChannelListener(this);
this.server_obj = server_obj;
}
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;
}
