1 //******************************************************************************
2 //
3 // File: JobSchedulerProxy.java
4 // Package: edu.rit.pj.cluster
5 // Unit: Class edu.rit.pj.cluster.JobSchedulerProxy
6 //
7 // This Java source file is copyright (C) 2012 by Alan Kaminsky. All rights
8 // reserved. For further information, contact the author, Alan Kaminsky, at
9 // ark@cs.rit.edu.
10 //
11 // This Java source file is part of the Parallel Java Library ("PJ"). PJ is free
12 // software; you can redistribute it and/or modify it under the terms of the GNU
13 // General Public License as published by the Free Software Foundation; either
14 // version 3 of the License, or (at your option) any later version.
15 //
16 // PJ is distributed in the hope that it will be useful, but WITHOUT ANY
17 // WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
18 // A PARTICULAR PURPOSE. See the GNU General Public License for more details.
19 //
20 // Linking this library statically or dynamically with other modules is making a
21 // combined work based on this library. Thus, the terms and conditions of the GNU
22 // General Public License cover the whole combination.
23 //
24 // As a special exception, the copyright holders of this library give you
25 // permission to link this library with independent modules to produce an
26 // executable, regardless of the license terms of these independent modules, and
27 // to copy and distribute the resulting executable under terms of your choice,
28 // provided that you also meet, for each linked independent module, the terms
29 // and conditions of the license of that module. An independent module is a module
30 // which is not derived from or based on this library. If you modify this library,
31 // you may extend this exception to your version of the library, but you are not
32 // obligated to do so. If you do not wish to do so, delete this exception
33 // statement from your version.
34 //
35 // A copy of the GNU General Public License is provided in the file gpl.txt. You
36 // may also obtain a copy of the GNU General Public License on the World Wide
37 // Web at http://www.gnu.org/licenses/gpl.html.
38 //
39 //******************************************************************************
40 package edu.rit.pj.cluster;
41
42 import java.io.IOException;
43
44 import edu.rit.mp.Channel;
45 import edu.rit.mp.ChannelGroup;
46
47 /**
48 * Class JobSchedulerProxy provides a proxy object for sending messages to a PJ
49 * job scheduler process.
50 *
51 * @author Alan Kaminsky
52 * @version 24-Jan-2012
53 */
54 public class JobSchedulerProxy
55 extends Proxy
56 implements JobSchedulerRef {
57
58 // Exported constructors.
59 /**
60 * Construct a new job scheduler proxy. The proxy will use the given channel
61 * in the given channel group to send messages to the job scheduler process.
62 *
63 * @param theChannelGroup Channel group.
64 * @param theChannel Channel.
65 */
66 public JobSchedulerProxy(ChannelGroup theChannelGroup,
67 Channel theChannel) {
68 super(theChannelGroup, theChannel);
69 }
70
71 // Exported operations.
72 /**
73 * {@inheritDoc}
74 *
75 * Report that a backend node failed.
76 * @exception IOException Thrown if an I/O error occurred.
77 */
78 public void backendFailed(JobFrontendRef theJobFrontend,
79 String name)
80 throws IOException {
81 send(JobSchedulerMessage.backendFailed(theJobFrontend, name));
82 }
83
84 /**
85 * {@inheritDoc}
86 *
87 * Cancel a job.
88 * @exception IOException Thrown if an I/O error occurred.
89 */
90 public void cancelJob(JobFrontendRef theJobFrontend,
91 String errmsg)
92 throws IOException {
93 send(JobSchedulerMessage.cancelJob(theJobFrontend, errmsg));
94 }
95
96 /**
97 * {@inheritDoc}
98 *
99 * Report that a job finished.
100 * @exception IOException Thrown if an I/O error occurred.
101 */
102 public void jobFinished(JobFrontendRef theJobFrontend)
103 throws IOException {
104 send(JobSchedulerMessage.jobFinished(theJobFrontend));
105 }
106
107 /**
108 * {@inheritDoc}
109 *
110 * Renew the lease on a job.
111 * @exception IOException Thrown if an I/O error occurred.
112 */
113 public void renewLease(JobFrontendRef theJobFrontend)
114 throws IOException {
115 send(JobSchedulerMessage.renewLease(theJobFrontend));
116 }
117
118 /**
119 * {@inheritDoc}
120 *
121 * Report a comment for a process.
122 * @exception IOException Thrown if an I/O error occurred.
123 */
124 public void reportComment(JobFrontendRef theJobFrontend,
125 int rank,
126 String comment)
127 throws IOException {
128 send(JobSchedulerMessage.reportComment(theJobFrontend, rank, comment));
129 }
130
131 /**
132 * {@inheritDoc}
133 *
134 * Request that a job be scheduled.
135 * @exception IOException Thrown if an I/O error occurred.
136 */
137 public void requestJob(JobFrontendRef theJobFrontend,
138 String username,
139 int Nn,
140 int Np,
141 int Nt)
142 throws IOException {
143 send(JobSchedulerMessage.requestJob(theJobFrontend, username, Nn, Np, Nt));
144 }
145
146 }