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.core.agent;
28:
29: import org.cougaar.core.component.Component;
30: import org.cougaar.core.component.ServiceBroker;
31: import org.cougaar.core.component.ServiceRevokedListener;
32: import org.cougaar.util.GenericStateModelAdapter;
33:
34: /**
35: * This component invokes the {@link MessageSwitchShutdownService}
36: * during agent suspend and resume.
37: *
38: * @see MessageSwitchUnpendService
39: */
40: public final class MessageSwitchShutdown extends
41: GenericStateModelAdapter implements Component {
42:
43: private ServiceBroker sb;
44:
45: private MessageSwitchShutdownService msss;
46:
47: public void setServiceBroker(ServiceBroker sb) {
48: this .sb = sb;
49: }
50:
51: public void load() {
52: super .load();
53:
54: msss = (MessageSwitchShutdownService) sb.getService(this ,
55: MessageSwitchShutdownService.class, null);
56: if (msss == null) {
57: throw new RuntimeException(
58: "Unable to obtain MessageSwitchShutdownService");
59: }
60: }
61:
62: public void suspend() {
63: super .suspend();
64: msss.shutdown();
65: }
66:
67: public void resume() {
68: super .resume();
69: msss.restore();
70: }
71:
72: public void unload() {
73: super .unload();
74: if (msss != null) {
75: sb.releaseService(this , MessageSwitchShutdownService.class,
76: msss);
77: msss = null;
78: }
79: }
80: }
|