01: /*
02: * <copyright>
03: *
04: * Copyright 1997-2004 BBNT Solutions, LLC
05: * under sponsorship of the Defense Advanced Research Projects
06: * Agency (DARPA).
07: *
08: * You can redistribute this software and/or modify it under the
09: * terms of the Cougaar Open Source License as published on the
10: * Cougaar Open Source Website (www.cougaar.org).
11: *
12: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
13: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
14: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
15: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
16: * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
17: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
18: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23: *
24: * </copyright>
25: */
26:
27: package org.cougaar.mts.base;
28:
29: import org.cougaar.core.mts.MessageAddress;
30: import org.cougaar.core.mts.MessageAttributes;
31: import org.cougaar.mts.std.AttributedMessage;
32:
33: /**
34: * The default, and for now only, implementation of {@link
35: * MessageDeliverer}. The implementation of
36: * <strong>deliverMessage</strong> forwards each message on to the
37: * appropriate DestinationLink. */
38: public class MessageDelivererImpl implements MessageDeliverer {
39: public MessageTransportRegistryService registry;
40: public String name;
41:
42: public MessageDelivererImpl(String name,
43: MessageTransportRegistryService registry) {
44: this .registry = registry;
45: this .name = name;
46: }
47:
48: public boolean matches(String name) {
49: return this .name.equals(name);
50: }
51:
52: /**
53: * Forward the message on to the appropriate ReceiveLink, or links
54: * in the case of a MulticastMessageAddress. The lookup is
55: * handled by the MessageTransportRegistry. */
56: public MessageAttributes deliverMessage(AttributedMessage message,
57: MessageAddress addr) throws MisdeliveredMessageException {
58: if (message == null)
59: return null;
60: synchronized (registry) {
61: // This is locked to prevent the receiver from
62: // unregistering between the lookup and the delivery.
63: // The corresponding unregister lock is on a private
64: // method in MesageTransportRegistry, removeLocalClient.
65: ReceiveLink link = registry.findLocalReceiveLink(addr);
66: if (link != null) {
67: return link.deliverMessage(message);
68: }
69: }
70: throw new MisdeliveredMessageException(message);
71: }
72:
73: }
|