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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 | |
11 | **********************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.internal.lttng2.control.ui.relayd; | |
14 | ||
15 | import java.io.IOException; | |
16 | import java.io.UnsupportedEncodingException; | |
17 | import java.net.Socket; | |
18 | import java.util.List; | |
19 | ||
20 | import org.eclipse.core.runtime.CoreException; | |
21 | import org.eclipse.core.runtime.IProgressMonitor; | |
22 | import org.eclipse.core.runtime.IStatus; | |
23 | import org.eclipse.core.runtime.Status; | |
24 | import org.eclipse.core.runtime.jobs.Job; | |
25 | import org.eclipse.linuxtools.ctf.core.trace.CTFTrace; | |
26 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.ILttngRelaydConnector; | |
27 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.LttngRelaydConnectorFactory; | |
28 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands.AttachReturnCode; | |
29 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands.AttachSessionResponse; | |
30 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands.CreateSessionResponse; | |
31 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands.CreateSessionReturnCode; | |
32 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands.IndexResponse; | |
33 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands.NextIndexReturnCode; | |
34 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands.SessionResponse; | |
35 | import org.eclipse.linuxtools.internal.lttng2.control.core.relayd.lttngviewerCommands.StreamResponse; | |
36 | import org.eclipse.linuxtools.internal.lttng2.control.ui.Activator; | |
2bdf0193 AM |
37 | import org.eclipse.tracecompass.tmf.core.signal.TmfTraceRangeUpdatedSignal; |
38 | import org.eclipse.tracecompass.tmf.core.timestamp.TmfTimeRange; | |
39 | import org.eclipse.tracecompass.tmf.ctf.core.CtfTmfTimestamp; | |
40 | import org.eclipse.tracecompass.tmf.ctf.core.CtfTmfTrace; | |
6fd3c6e9 MAL |
41 | |
42 | /** | |
43 | * Consumer of the relay d. | |
44 | * | |
45 | * @author Matthew Khouzam | |
46 | * @since 3.1 | |
47 | */ | |
48 | public final class LttngRelaydConsumer { | |
49 | ||
50 | private static final int SIGNAL_THROTTLE_NANOSEC = 10_000_000; | |
51 | private static final String ENCODING_UTF_8 = "UTF-8"; //$NON-NLS-1$ | |
52 | ||
53 | private Job fConsumerJob; | |
54 | private CtfTmfTrace fCtfTmfTrace; | |
55 | private CTFTrace fCtfTrace; | |
56 | private long fTimestampEnd; | |
57 | private AttachSessionResponse fSession; | |
58 | private Socket fConnection; | |
59 | private ILttngRelaydConnector fRelayd; | |
60 | private String fTracePath; | |
61 | private long fLastSignal = 0; | |
62 | private final LttngRelaydConnectionInfo fConnectionInfo; | |
63 | ||
64 | /** | |
65 | * Start a lttng consumer. | |
66 | * | |
67 | * @param address | |
68 | * the ip address in string format | |
69 | * @param port | |
70 | * the port, an integer | |
71 | * @param sessionName | |
72 | * the session name | |
73 | * @param project | |
74 | * the default project | |
75 | */ | |
76 | LttngRelaydConsumer(final LttngRelaydConnectionInfo connectionInfo) { | |
77 | fConnectionInfo = connectionInfo; | |
78 | fTimestampEnd = 0; | |
79 | } | |
80 | ||
81 | /** | |
82 | * Connects to the relayd at the given address and port then attaches to the | |
83 | * given session name. | |
84 | * | |
85 | * @throws CoreException | |
86 | * If something goes wrong during the connection | |
87 | * <ul> | |
88 | * <li> | |
89 | * Connection could not be established (Socket could not be | |
90 | * opened, etc)</li> | |
91 | * <li> | |
92 | * Connection timeout</li> | |
93 | * <li> | |
94 | * The session was not found</li> | |
95 | * <li> | |
96 | * Could not create viewer session</li> | |
97 | * <li> | |
98 | * Invalid trace (no metadata, no streams)</li> | |
99 | * </ul> | |
100 | */ | |
101 | public void connect() throws CoreException { | |
102 | if (fConnection != null) { | |
103 | return; | |
104 | } | |
105 | ||
106 | try { | |
107 | fConnection = new Socket(fConnectionInfo.getHost(), fConnectionInfo.getPort()); | |
108 | fRelayd = LttngRelaydConnectorFactory.getNewConnector(fConnection); | |
109 | List<SessionResponse> sessions = fRelayd.getSessions(); | |
110 | SessionResponse selectedSession = null; | |
111 | for (SessionResponse session : sessions) { | |
112 | String asessionName = nullTerminatedByteArrayToString(session.getSessionName().getBytes()); | |
113 | ||
114 | if (asessionName.equals(fConnectionInfo.getSessionName())) { | |
115 | selectedSession = session; | |
116 | break; | |
117 | } | |
118 | } | |
119 | ||
120 | if (selectedSession == null) { | |
121 | throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngRelaydConsumer_SessionNotFound)); | |
122 | } | |
123 | ||
124 | CreateSessionResponse createSession = fRelayd.createSession(); | |
125 | if (createSession.getStatus() != CreateSessionReturnCode.LTTNG_VIEWER_CREATE_SESSION_OK) { | |
126 | throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngRelaydConsumer_CreateViewerSessionError + createSession.getStatus().toString())); | |
127 | } | |
128 | ||
129 | AttachSessionResponse attachedSession = fRelayd.attachToSession(selectedSession); | |
130 | if (attachedSession.getStatus() != AttachReturnCode.VIEWER_ATTACH_OK) { | |
131 | throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngRelaydConsumer_AttachSessionError + attachedSession.getStatus().toString())); | |
132 | } | |
133 | ||
134 | String metadata = fRelayd.getMetadata(attachedSession); | |
135 | if (metadata == null) { | |
136 | throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngRelaydConsumer_NoMetadata)); | |
137 | } | |
138 | ||
139 | List<StreamResponse> attachedStreams = attachedSession.getStreamList(); | |
140 | if (attachedStreams.isEmpty()) { | |
141 | throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngRelaydConsumer_NoStreams)); | |
142 | } | |
143 | ||
144 | fTracePath = nullTerminatedByteArrayToString(attachedStreams.get(0).getPathName().getBytes()); | |
145 | ||
146 | fSession = attachedSession; | |
147 | } catch (IOException e) { | |
148 | throw new CoreException(new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngRelaydConsumer_ErrorConnecting + (e.getMessage() != null ? e.getMessage() : ""))); //$NON-NLS-1$ | |
149 | } | |
150 | } | |
151 | ||
152 | /** | |
153 | * Run the consumer operation for a give trace. | |
154 | * | |
155 | * @param trace | |
156 | * the trace | |
157 | */ | |
158 | public void run(final CtfTmfTrace trace) { | |
159 | if (fSession == null) { | |
160 | return; | |
161 | } | |
162 | ||
163 | fCtfTmfTrace = trace; | |
164 | fCtfTrace = trace.getCTFTrace(); | |
165 | fConsumerJob = new Job("RelayD consumer") { //$NON-NLS-1$ | |
166 | ||
167 | @Override | |
168 | protected IStatus run(final IProgressMonitor monitor) { | |
169 | try { | |
170 | while (!monitor.isCanceled()) { | |
171 | List<StreamResponse> attachedStreams = fSession.getStreamList(); | |
172 | for (StreamResponse stream : attachedStreams) { | |
173 | if (stream.getMetadataFlag() != 1) { | |
174 | IndexResponse indexReply = fRelayd.getNextIndex(stream); | |
175 | if (indexReply.getStatus() == NextIndexReturnCode.VIEWER_INDEX_OK) { | |
176 | long nanoTimeStamp = fCtfTrace.timestampCyclesToNanos(indexReply.getTimestampEnd()); | |
177 | if (nanoTimeStamp > fTimestampEnd) { | |
178 | CtfTmfTimestamp endTime = new CtfTmfTimestamp(nanoTimeStamp); | |
179 | TmfTimeRange range = new TmfTimeRange(fCtfTmfTrace.getStartTime(), endTime); | |
180 | ||
181 | long currentTime = System.nanoTime(); | |
182 | if (currentTime - fLastSignal > SIGNAL_THROTTLE_NANOSEC) { | |
183 | TmfTraceRangeUpdatedSignal signal = new TmfTraceRangeUpdatedSignal(LttngRelaydConsumer.this, fCtfTmfTrace, range); | |
184 | fCtfTmfTrace.broadcastAsync(signal); | |
185 | fLastSignal = currentTime; | |
186 | } | |
187 | fTimestampEnd = nanoTimeStamp; | |
188 | } | |
189 | } else if (indexReply.getStatus() == NextIndexReturnCode.VIEWER_INDEX_HUP) { | |
190 | // The trace is now complete because the trace session was destroyed | |
191 | fCtfTmfTrace.setComplete(true); | |
192 | TmfTraceRangeUpdatedSignal signal = new TmfTraceRangeUpdatedSignal(LttngRelaydConsumer.this, fCtfTmfTrace, new TmfTimeRange(fCtfTmfTrace.getStartTime(), new CtfTmfTimestamp(fTimestampEnd))); | |
193 | fCtfTmfTrace.broadcastAsync(signal); | |
194 | return Status.OK_STATUS; | |
195 | } | |
196 | } | |
197 | } | |
198 | } | |
199 | } catch (IOException e) { | |
200 | Activator.getDefault().logError("Error during live trace reading", e); //$NON-NLS-1$ | |
201 | return new Status(IStatus.ERROR, Activator.PLUGIN_ID, Messages.LttngRelaydConsumer_ErrorLiveReading + (e.getMessage() != null ? e.getMessage() : "")); //$NON-NLS-1$ | |
202 | } | |
203 | ||
204 | return Status.OK_STATUS; | |
205 | } | |
206 | }; | |
207 | fConsumerJob.setSystem(true); | |
208 | fConsumerJob.schedule(); | |
209 | } | |
210 | ||
211 | /** | |
212 | * Dispose the consumer and it's resources (sockets, etc). | |
213 | */ | |
214 | public void dispose() { | |
215 | try { | |
216 | if (fConsumerJob != null) { | |
217 | fConsumerJob.cancel(); | |
218 | fConsumerJob.join(); | |
219 | } | |
220 | if (fConnection != null) { | |
221 | fConnection.close(); | |
222 | } | |
223 | if (fRelayd != null) { | |
224 | fRelayd.close(); | |
225 | } | |
226 | } catch (IOException e) { | |
227 | // Ignore | |
228 | } catch (InterruptedException e) { | |
229 | // Ignore | |
230 | } | |
231 | } | |
232 | ||
233 | /** | |
234 | * Once the consumer is connected to the relayd session, it knows the trace | |
235 | * path. This can be useful to know exactly where the trace is so that it | |
236 | * can be imported into the workspace and it can be opened. | |
237 | * | |
238 | * @return the trace path | |
239 | */ | |
240 | public String getTracePath() { | |
241 | return fTracePath; | |
242 | } | |
243 | ||
244 | private static String nullTerminatedByteArrayToString(final byte[] byteArray) throws UnsupportedEncodingException { | |
245 | // Find length of null terminated string | |
246 | int length = 0; | |
247 | while (length < byteArray.length && byteArray[length] != 0) { | |
248 | length++; | |
249 | } | |
250 | ||
251 | String asessionName = new String(byteArray, 0, length, ENCODING_UTF_8); | |
252 | return asessionName; | |
253 | } | |
254 | ||
255 | } |