1 /**
2 * Copyright (c) 2012, University of Konstanz, Distributed Systems Group All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
5 * following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of
6 * conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice,
7 * this list of conditions and the following disclaimer in the documentation and/or other materials provided with the
8 * distribution. * Neither the name of the University of Konstanz nor the names of its contributors may be used to
9 * endorse or promote products derived from this software without specific prior written permission.
10 *
11 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
12 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
13 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
14 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
15 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
16 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
17 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
18 */
19 package org.jscsi.initiator.connection;
20
21
22 import java.nio.ByteBuffer;
23
24
25 /**
26 * <h1>TargetCapacityInformations</h1>
27 * <p>
28 * This class encapsulates the informations about the capacity of an iSCSI Target.
29 *
30 * @author Volker Wildi
31 */
32 public final class TargetCapacityInformations {
33
34 // --------------------------------------------------------------------------
35 // --------------------------------------------------------------------------
36
37 /** Multiplicator from bytes to mega bytes. */
38 private static final int MEGA_BYTES = 1024 * 1024;
39
40 // --------------------------------------------------------------------------
41 // --------------------------------------------------------------------------
42
43 /** The number of blocks. */
44 private long size;
45
46 /** The block size (in bytes). */
47 private long blockSize;
48
49 // --------------------------------------------------------------------------
50 // --------------------------------------------------------------------------
51
52 /**
53 * Default constructor to create a new, empty <code>TargetCapacityInformations</code> object.
54 */
55 public TargetCapacityInformations () {
56
57 }
58
59 // --------------------------------------------------------------------------
60 // --------------------------------------------------------------------------
61
62 /**
63 * Returns the number of blocks of the connected target.
64 *
65 * @return Number of blocks.
66 */
67 public final long getSize () {
68
69 return size;
70 }
71
72 /**
73 * Returns the block size (in bytes).
74 *
75 * @return The size of one block (in bytes).
76 */
77 public final long getBlockSize () {
78
79 return blockSize;
80 }
81
82 // --------------------------------------------------------------------------
83 // --------------------------------------------------------------------------
84
85 /**
86 * This method deserializes from <code>buf</code> the capacity informations of the iSCSI Target.
87 *
88 * @param buf The input buffer to read from.
89 */
90 public final void deserialize (final ByteBuffer buf) {
91 size = buf.getInt();
92 blockSize = buf.getInt();
93 }
94
95 // --------------------------------------------------------------------------
96 // --------------------------------------------------------------------------
97
98 /** {@inheritDoc} */
99 @Override
100 public final String toString () {
101
102 return "Block Size: " + blockSize + "B, Size: " + size + " blocks, Total Capacity: " + (size * blockSize) / MEGA_BYTES + " MB";
103 }
104
105 // --------------------------------------------------------------------------
106 // --------------------------------------------------------------------------
107 // --------------------------------------------------------------------------
108 // --------------------------------------------------------------------------
109 }