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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 | ||
8e15b929 MK |
29 | /** |
30 | * Command size | |
8adfbb73 MAL |
31 | * |
32 | * Sum of the field sizes / 8 ( 7 longs and 2 ints): | |
33 | * fOffset + fPacketSize + fContentSize + fTimestampBegin + fTimestampEnd + | |
34 | * fEventsDiscarded + fStreamId + fStatus + fFlags | |
8e15b929 MK |
35 | */ |
36 | public final static int SIZE = | |
37 | (Long.SIZE * 7 + Integer.SIZE * 2) / 8; | |
38 | ||
39 | /** the offset */ | |
40 | private final long fOffset; | |
41 | /** packet_size */ | |
42 | private final long fPacketSize; | |
43 | /** the content size - how much of the packet is used */ | |
44 | private final long fContentSize; | |
45 | /** timestamp of the beginning of the packet */ | |
46 | private final long fTimestampBegin; | |
47 | /** timestamp of the end of the packet */ | |
48 | private final long fTimestampEnd; | |
49 | /** number of discarded events BEFORE this packet */ | |
50 | private final long fEventsDiscarded; | |
51 | /** the CTF stream id */ | |
52 | private final long fStreamId; | |
53 | /** the status of the getNextIndex request */ | |
54 | private final NextIndexReturnCode fStatus; | |
55 | /** whether there are new streams or metadata */ | |
56 | private final int fFlags; | |
57 | ||
58 | /** | |
59 | * IndexResposne from network | |
60 | * | |
61 | * @param inNet | |
62 | * data input stream | |
63 | * @throws IOException | |
64 | * network error | |
65 | */ | |
66 | public IndexResponse(DataInputStream inNet) throws IOException { | |
67 | byte[] data = new byte[SIZE]; | |
68 | inNet.readFully(data); | |
69 | ByteBuffer bb = ByteBuffer.wrap(data); | |
70 | bb.order(ByteOrder.BIG_ENDIAN); | |
71 | fOffset = bb.getLong(); | |
72 | fPacketSize = bb.getLong(); | |
73 | fContentSize = bb.getLong(); | |
74 | fTimestampBegin = bb.getLong(); | |
75 | fTimestampEnd = bb.getLong(); | |
76 | fEventsDiscarded = bb.getLong(); | |
77 | fStreamId = bb.getLong(); | |
78 | fStatus = NextIndexReturnCode.values()[bb.getInt() - 1]; | |
79 | fFlags = bb.getInt(); | |
80 | } | |
81 | ||
82 | /** | |
83 | * Gets the offset | |
84 | * | |
85 | * @return the offset | |
86 | */ | |
87 | public long getOffset() { | |
88 | return fOffset; | |
89 | } | |
90 | ||
91 | /** | |
92 | * Gets the packet size | |
93 | * | |
94 | * @return the packet size | |
95 | */ | |
96 | public long getPacketSize() { | |
97 | return fPacketSize; | |
98 | } | |
99 | ||
100 | /** | |
101 | * Gets the content size - how much of the packet is used | |
102 | * | |
103 | * @return the content size | |
104 | */ | |
105 | public long getContentSize() { | |
106 | return fContentSize; | |
107 | } | |
108 | ||
109 | /** | |
110 | * Gets the timestamp of the beginning of the packet | |
111 | * | |
112 | * @return the timestamp of the beginning of the packet | |
113 | */ | |
114 | public long getTimestampBegin() { | |
115 | return fTimestampBegin; | |
116 | } | |
117 | ||
118 | /** | |
119 | * Gets the timestamp of the end of the packet | |
120 | * | |
121 | * @return the timestamp of the end of the packet | |
122 | */ | |
123 | public long getTimestampEnd() { | |
124 | return fTimestampEnd; | |
125 | } | |
126 | ||
127 | /** | |
128 | * Gets the number of discarded events BEFORE this packet | |
129 | * | |
130 | * @return the number of discarded events BEFORE this packet | |
131 | */ | |
132 | public long getEventsDiscarded() { | |
133 | return fEventsDiscarded; | |
134 | } | |
135 | ||
136 | /** | |
137 | * Gets the CTF stream id | |
138 | * | |
139 | * @return the CTF stream id | |
140 | */ | |
141 | public long getStreamId() { | |
142 | return fStreamId; | |
143 | } | |
144 | ||
145 | /** | |
146 | * Gets the status | |
147 | * | |
148 | * @return the status | |
149 | */ | |
150 | public NextIndexReturnCode getStatus() { | |
151 | return fStatus; | |
152 | } | |
153 | ||
154 | /** | |
155 | * Gets the flags that describe whether there are new streams or metadata | |
156 | * | |
157 | * @return the flags | |
158 | */ | |
159 | public int getFlags() { | |
160 | return fFlags; | |
161 | } | |
162 | ||
163 | } |