1 /*
2 * Copyright (c) 2007, Fraunhofer-Gesellschaft
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * (1) Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the disclaimer at the end.
11 * Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * (2) Neither the name of Fraunhofer nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * DISCLAIMER
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
35 package org.ogf.graap.wsag.samples.actions;
36
37 import java.util.Map;
38
39 import org.apache.log4j.Logger;
40 import org.apache.xmlbeans.XmlObject;
41 import org.ogf.graap.wsag.api.Agreement;
42 import org.ogf.graap.wsag.api.AgreementOffer;
43 import org.ogf.graap.wsag.api.exceptions.AgreementFactoryException;
44 import org.ogf.graap.wsag.server.actions.AbstractCreateAgreementAction;
45 import org.ogf.graap.wsag.server.actions.ActionInitializationException;
46 import org.ogf.graap.wsag.server.monitoring.MonitorableAgreement;
47
48 /**
49 * SampleCreateAgreementAction
50 *
51 * @author hrasheed
52 *
53 */
54 public class SampleCreateAgreementAction extends AbstractCreateAgreementAction
55 {
56
57 private static Logger log = Logger.getLogger( SampleCreateAgreementAction.class );
58
59 /**
60 * Key to identify an offer in the agreement execution properties.
61 *
62 * @see org.ogf.graap.wsag.server.monitoring.IMonitoringContext#getProperties()
63 * @see org.ogf.graap.wsag.api.types.AbstractAgreementType#getExecutionContext()
64 */
65 public static final String SAMPLE_OFFER = "SAMPLE_OFFER";
66
67 /**
68 * {@inheritDoc}
69 */
70 @Override
71 public Agreement createAgreement( AgreementOffer offer ) throws AgreementFactoryException
72 {
73 try
74 {
75 //
76 // Creates a SampleAgreementOffer from a offer.
77 // getting Resources and Time Constraints information for a domain specific processing
78 // and decides upon accepting/rejecting the agreement offer based on the
79 // current availability of the resources within a required time frame
80 //
81 SampleAgreementOffer negotiatedOffer = new SampleAgreementOffer( offer.getXMLObject() );
82 if ( log.isTraceEnabled() )
83 {
84 log.trace( "resource requirements in offer: "
85 + negotiatedOffer.getResourceDefinition().xmlText() );
86 log.trace( "time constraint in offer: " + negotiatedOffer.getTimeConstraint().xmlText() );
87 }
88
89 //
90 // create a new instance of a (negotiated) domain-specific agreement implementation
91 //
92 SampleAgreement negotiatedAgreement = new SampleAgreement( offer );
93
94 //
95 // create an instance of a monitored agreement
96 //
97 MonitorableAgreement monitorAgreement = new MonitorableAgreement( negotiatedAgreement );
98
99 //
100 // set monitoring interval to 30 seconds, monitoring handler(s) are invoked once each monitoring
101 // cycle
102 //
103 monitorAgreement.setCronExpression( "0/30 * * * * ?" );
104
105 //
106 // add a custom monitoring handler
107 //
108 monitorAgreement.addMonitoringHandler( new SampleSDTMonitor() );
109
110 //
111 // add the agreement offer to the execution context so that monitoring handler can access it later
112 // on
113 //
114 Map<String, XmlObject> executionProperties = monitorAgreement.getExecutionContext();
115 executionProperties.put( SampleCreateAgreementAction.SAMPLE_OFFER, negotiatedOffer.getXMLObject() );
116
117 //
118 // start the monitoring process
119 //
120 monitorAgreement.startMonitoring();
121
122 //
123 // return the monitored agreement
124 //
125 return monitorAgreement;
126
127 }
128 catch ( Exception e )
129 {
130 log.error( e );
131 throw new AgreementFactoryException( e );
132 }
133 }
134
135 /**
136 * {@inheritDoc}
137 */
138 @Override
139 public void initialize() throws ActionInitializationException
140 {
141 // nothing to do here
142 }
143
144 }