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.core.mts.MessageAddress;
33: import org.cougaar.core.node.RegisterAgentService;
34: import org.cougaar.core.service.AgentIdentificationService;
35: import org.cougaar.util.GenericStateModelAdapter;
36:
37: /**
38: * This component registers the agent with the node's
39: * {@link RegisterAgentService}, which is used to track dynamically
40: * added and removed agents.
41: *
42: * @see RegisterAgentService
43: */
44: public final class RegisterAgent extends GenericStateModelAdapter
45: implements Component {
46:
47: private ServiceBroker sb;
48:
49: private RegisterAgentService ras;
50:
51: private MessageAddress localAgent;
52:
53: public void setServiceBroker(ServiceBroker sb) {
54: this .sb = sb;
55: }
56:
57: public void load() {
58: super .load();
59:
60: AgentIdentificationService ais = (AgentIdentificationService) sb
61: .getService(this , AgentIdentificationService.class,
62: null);
63: if (ais != null) {
64: localAgent = ais.getMessageAddress();
65: sb.releaseService(this , AgentIdentificationService.class,
66: ais);
67: }
68:
69: ras = (RegisterAgentService) sb.getService(this ,
70: RegisterAgentService.class, null);
71: if (ras != null) {
72: ras.addAgent(localAgent);
73: }
74: }
75:
76: public void unload() {
77: super .unload();
78:
79: if (ras != null) {
80: ras.removeAgent(localAgent);
81: sb.releaseService(this , RegisterAgentService.class, ras);
82: ras = null;
83: }
84: }
85: }
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