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1 | /********************************************************************** |
2 | * Copyright (c) 2014 Ericsson | |
3 | * | |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Matthew Khouzam - Initial implementation and API | |
11 | * Marc-Andre Laperle - Initial implementation and API | |
12 | **********************************************************************/ | |
13 | ||
14 | package org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands; | |
15 | ||
16 | import java.io.DataInputStream; | |
17 | import java.io.IOException; | |
18 | import java.nio.ByteBuffer; | |
19 | import java.nio.ByteOrder; | |
20 | ||
21 | /** | |
22 | * An Lttng packet index | |
23 | * | |
24 | * @author Matthew Khouzam | |
25 | * @since 3.0 | |
26 | */ | |
27 | public class IndexResponse implements IRelayResponse { | |
28 | ||
29 | // Sum of the field sizes / 8 ( 7 longs and 2 ints) | |
30 | /** | |
31 | * Command size | |
32 | */ | |
33 | public final static int SIZE = | |
34 | (Long.SIZE * 7 + Integer.SIZE * 2) / 8; | |
35 | ||
36 | /** the offset */ | |
37 | private final long fOffset; | |
38 | /** packet_size */ | |
39 | private final long fPacketSize; | |
40 | /** the content size - how much of the packet is used */ | |
41 | private final long fContentSize; | |
42 | /** timestamp of the beginning of the packet */ | |
43 | private final long fTimestampBegin; | |
44 | /** timestamp of the end of the packet */ | |
45 | private final long fTimestampEnd; | |
46 | /** number of discarded events BEFORE this packet */ | |
47 | private final long fEventsDiscarded; | |
48 | /** the CTF stream id */ | |
49 | private final long fStreamId; | |
50 | /** the status of the getNextIndex request */ | |
51 | private final NextIndexReturnCode fStatus; | |
52 | /** whether there are new streams or metadata */ | |
53 | private final int fFlags; | |
54 | ||
55 | /** | |
56 | * IndexResposne from network | |
57 | * | |
58 | * @param inNet | |
59 | * data input stream | |
60 | * @throws IOException | |
61 | * network error | |
62 | */ | |
63 | public IndexResponse(DataInputStream inNet) throws IOException { | |
64 | byte[] data = new byte[SIZE]; | |
65 | inNet.readFully(data); | |
66 | ByteBuffer bb = ByteBuffer.wrap(data); | |
67 | bb.order(ByteOrder.BIG_ENDIAN); | |
68 | fOffset = bb.getLong(); | |
69 | fPacketSize = bb.getLong(); | |
70 | fContentSize = bb.getLong(); | |
71 | fTimestampBegin = bb.getLong(); | |
72 | fTimestampEnd = bb.getLong(); | |
73 | fEventsDiscarded = bb.getLong(); | |
74 | fStreamId = bb.getLong(); | |
75 | fStatus = NextIndexReturnCode.values()[bb.getInt() - 1]; | |
76 | fFlags = bb.getInt(); | |
77 | } | |
78 | ||
79 | /** | |
80 | * Gets the offset | |
81 | * | |
82 | * @return the offset | |
83 | */ | |
84 | public long getOffset() { | |
85 | return fOffset; | |
86 | } | |
87 | ||
88 | /** | |
89 | * Gets the packet size | |
90 | * | |
91 | * @return the packet size | |
92 | */ | |
93 | public long getPacketSize() { | |
94 | return fPacketSize; | |
95 | } | |
96 | ||
97 | /** | |
98 | * Gets the content size - how much of the packet is used | |
99 | * | |
100 | * @return the content size | |
101 | */ | |
102 | public long getContentSize() { | |
103 | return fContentSize; | |
104 | } | |
105 | ||
106 | /** | |
107 | * Gets the timestamp of the beginning of the packet | |
108 | * | |
109 | * @return the timestamp of the beginning of the packet | |
110 | */ | |
111 | public long getTimestampBegin() { | |
112 | return fTimestampBegin; | |
113 | } | |
114 | ||
115 | /** | |
116 | * Gets the timestamp of the end of the packet | |
117 | * | |
118 | * @return the timestamp of the end of the packet | |
119 | */ | |
120 | public long getTimestampEnd() { | |
121 | return fTimestampEnd; | |
122 | } | |
123 | ||
124 | /** | |
125 | * Gets the number of discarded events BEFORE this packet | |
126 | * | |
127 | * @return the number of discarded events BEFORE this packet | |
128 | */ | |
129 | public long getEventsDiscarded() { | |
130 | return fEventsDiscarded; | |
131 | } | |
132 | ||
133 | /** | |
134 | * Gets the CTF stream id | |
135 | * | |
136 | * @return the CTF stream id | |
137 | */ | |
138 | public long getStreamId() { | |
139 | return fStreamId; | |
140 | } | |
141 | ||
142 | /** | |
143 | * Gets the status | |
144 | * | |
145 | * @return the status | |
146 | */ | |
147 | public NextIndexReturnCode getStatus() { | |
148 | return fStatus; | |
149 | } | |
150 | ||
151 | /** | |
152 | * Gets the flags that describe whether there are new streams or metadata | |
153 | * | |
154 | * @return the flags | |
155 | */ | |
156 | public int getFlags() { | |
157 | return fFlags; | |
158 | } | |
159 | ||
160 | } |