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.corba;
28:
29: import org.cougaar.mts.base.DestinationLink;
30: import org.cougaar.mts.base.DestinationLinkDelegateImplBase;
31: import org.cougaar.mts.base.StandardAspect;
32: import org.cougaar.mts.std.AttributedMessage;
33:
34: /**
35: * This test Aspect prefers CORBA over RMI after a delay, by cutting
36: * the cost of the former 10 seconds in.
37: */
38: public class EnableCorbaAspect extends StandardAspect
39:
40: {
41: private long cutover_time;
42: private long startup_period = 10000; // make this a parameter
43:
44: public Object getDelegate(Object object, Class type) {
45: if (type == DestinationLink.class
46: && object instanceof CorbaLinkProtocol)
47: return new Delegate((DestinationLink) object);
48: return null;
49: }
50:
51: public void start() {
52: cutover_time = System.currentTimeMillis() + startup_period;
53: super .start();
54: }
55:
56: private boolean timeToCutover() {
57: long now = System.currentTimeMillis();
58: return now > cutover_time;
59: }
60:
61: private class Delegate extends DestinationLinkDelegateImplBase {
62: Delegate(DestinationLink link) {
63: super (link);
64: }
65:
66: public int cost(AttributedMessage message) {
67: long now = System.currentTimeMillis();
68: int cost = super .cost(message);
69: return timeToCutover() ? cost / 10 : cost;
70: }
71:
72: }
73:
74: }
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