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5d10d135 ASL |
1 | /******************************************************************************* |
2 | * Copyright (c) 2009, 2010 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 | * Alvaro Sanchez-Leon (alvsan09@gmail.com) - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
13 | package org.eclipse.linuxtools.lttng.state.evProcessor; | |
14 | ||
15 | import java.util.Set; | |
16 | ||
17 | import org.eclipse.linuxtools.lttng.TraceDebug; | |
18 | import org.eclipse.linuxtools.lttng.event.LttngEvent; | |
19 | import org.eclipse.linuxtools.lttng.event.LttngSyntheticEvent; | |
20 | import org.eclipse.linuxtools.lttng.event.LttngSyntheticEvent.SequenceInd; | |
21 | import org.eclipse.linuxtools.lttng.state.model.LttngTraceState; | |
22 | import org.eclipse.linuxtools.tmf.event.TmfEvent; | |
23 | ||
24 | /** | |
25 | * @author alvaro | |
26 | * | |
27 | */ | |
28 | public abstract class AbsEventToHandlerResolver implements | |
29 | IEventToHandlerResolver, ITransEventProcessor { | |
30 | ||
31 | Long fbeforeEventCount = 0L; | |
32 | Long fstateUpdateCount = 0L; | |
33 | Long filteredOutEventsCount = 0L; | |
34 | ||
35 | /* (non-Javadoc) | |
36 | * @see org.eclipse.linuxtools.lttng.state.evProcessor.IEventToHandlerResolver#getBeforeProcessor(java.lang.String) | |
37 | */ | |
38 | public abstract ILttngEventProcessor getBeforeProcessor(String eventType); | |
39 | ||
40 | /* (non-Javadoc) | |
41 | * @see org.eclipse.linuxtools.lttng.state.evProcessor.IEventToHandlerResolver#getAfterProcessor(java.lang.String) | |
42 | */ | |
43 | public abstract ILttngEventProcessor getAfterProcessor(String eventType); | |
44 | ||
45 | /* (non-Javadoc) | |
46 | * @see org.eclipse.linuxtools.lttng.state.evProcessor.IEventToHandlerResolver#getfinishProcessor() | |
47 | */ | |
48 | public abstract ILttngEventProcessor getfinishProcessor(); | |
49 | ||
50 | /* (non-Javadoc) | |
51 | * @see org.eclipse.linuxtools.lttng.state.evProcessor.IEventToHandlerResolver#getStateUpdaterProcessor(java.lang.String) | |
52 | */ | |
53 | public abstract ILttngEventProcessor getStateUpdaterProcessor( | |
54 | String eventType); | |
55 | ||
56 | /* | |
57 | * (non-Javadoc) | |
58 | * | |
59 | * @see | |
60 | * org.eclipse.linuxtools.lttng.state.evProcessor.ILttngEventProcessor#process | |
61 | * (org.eclipse.linuxtools.lttng.event.LttngEvent, | |
62 | * org.eclipse.linuxtools.lttng.state.model.LttngTraceState) | |
63 | */ | |
64 | /* | |
65 | * (non-Javadoc) | |
66 | * | |
67 | * @see | |
68 | * org.eclipse.linuxtools.lttng.state.evProcessor.ILttngEventProcessor#process | |
69 | * (org.eclipse.linuxtools.lttng.event.LttngEvent, | |
70 | * org.eclipse.linuxtools.lttng.state.model.LttngTraceState) | |
71 | */ | |
72 | public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) { | |
73 | if (trcEvent instanceof LttngSyntheticEvent) { | |
74 | ||
75 | // prepare to dispatch synthetic events to its corresponding handler | |
76 | LttngSyntheticEvent synEvent = (LttngSyntheticEvent) trcEvent; | |
77 | ILttngEventProcessor processor = null; | |
78 | ||
79 | // Status indicators do not contain a valid marker name | |
80 | if (synEvent.getSynType() == SequenceInd.STARTREQ) { | |
81 | reset(); | |
82 | return false; | |
83 | } | |
84 | ||
85 | if (synEvent.getSynType() == SequenceInd.ENDREQ) { | |
86 | processor = getfinishProcessor(); | |
87 | TraceDebug.debug("EndRequest satus received:"); | |
88 | } else { | |
89 | // valid marker name expected | |
90 | String eventType = synEvent.getMarkerName(); | |
91 | ||
92 | if (synEvent.getSynType() == SequenceInd.BEFORE) { | |
93 | processor = getBeforeProcessor(eventType); | |
94 | // increment event count only for one sequence indicator, | |
95 | // Note: BEFORE is selected to be used as an indicator to | |
96 | // prevent duplicated updates in the state system | |
97 | incrementBeforeEventCount(); | |
98 | } | |
99 | ||
100 | if (synEvent.getSynType() == SequenceInd.UPDATE) { | |
101 | processor = getStateUpdaterProcessor(eventType); | |
102 | incrementStateUpdateCount(); | |
103 | } | |
104 | ||
105 | if (synEvent.getSynType() == SequenceInd.AFTER) { | |
106 | processor = getAfterProcessor(eventType); | |
107 | } | |
108 | ||
109 | // TODO: Implement filter of events not associated to this trace | |
110 | // Make sure the event received is associated to this trace | |
111 | // handling context | |
112 | if (traceSt != null | |
113 | && trcEvent.getParentTrace() != traceSt.getContext() | |
114 | .getTraceIdRef()) { | |
115 | // increment the number of events filtered out | |
116 | filteredOutEventsCount++; | |
117 | return false; | |
118 | } | |
119 | } | |
120 | ||
121 | if (processor != null) { | |
122 | processor.process(trcEvent, traceSt); | |
123 | } | |
124 | } | |
125 | ||
126 | return true; | |
127 | } | |
128 | ||
129 | /* | |
130 | * (non-Javadoc) | |
131 | * | |
132 | * @see | |
133 | * org.eclipse.linuxtools.lttng.state.evProcessor.IBaseEventProcessor#process | |
134 | * (org.eclipse.linuxtools.tmf.event.TmfEvent, | |
135 | * org.eclipse.linuxtools.lttng.state.model.LttngTraceState) | |
136 | */ | |
137 | public void process(TmfEvent tmfEvent, LttngTraceState traceSt) { | |
138 | if (tmfEvent == null) { | |
139 | return; | |
140 | } | |
141 | ||
142 | if (!(tmfEvent instanceof LttngSyntheticEvent)) { | |
143 | TraceDebug | |
144 | .debug("The event received is not an instance of LttngSyntheticEvent and can not be processed"); | |
145 | return; | |
146 | } | |
147 | ||
148 | LttngSyntheticEvent trcEvent = (LttngSyntheticEvent) tmfEvent; | |
149 | ||
150 | process(trcEvent, traceSt); | |
151 | } | |
152 | ||
153 | /* | |
154 | * (non-Javadoc) | |
155 | * | |
156 | * @see org.eclipse.linuxtools.lttng.state.evProcessor.IBaseEventProcessor# | |
157 | * getEventsNotHandled() | |
158 | */ | |
159 | public Set<String> getEventsNotHandled() { | |
160 | return null; | |
161 | } | |
162 | ||
163 | /* | |
164 | * (non-Javadoc) | |
165 | * | |
166 | * @see org.eclipse.linuxtools.lttng.state.evProcessor.ITransEventProcessor# | |
167 | * getEventCount() | |
168 | */ | |
169 | public Long getBeforeEventCount() { | |
170 | return fbeforeEventCount; | |
171 | } | |
172 | ||
173 | /* | |
174 | * (non-Javadoc) | |
175 | * | |
176 | * @see org.eclipse.linuxtools.lttng.state.evProcessor.ITransEventProcessor# | |
177 | * getStateUpdateCount() | |
178 | */ | |
179 | public Long getStateUpdateCount() { | |
180 | return fstateUpdateCount; | |
181 | } | |
182 | ||
183 | /* | |
184 | * (non-Javadoc) | |
185 | * | |
186 | * @see org.eclipse.linuxtools.lttng.state.evProcessor.ITransEventProcessor# | |
187 | * getFilteredOutEventCount() | |
188 | */ | |
189 | public Long getFilteredOutEventCount() { | |
190 | return filteredOutEventsCount; | |
191 | } | |
192 | ||
193 | /** | |
194 | * <p> | |
195 | * Initialise counter values, e.g before new requests | |
196 | * </p> | |
197 | */ | |
198 | protected void reset() { | |
199 | fbeforeEventCount = 0L; | |
200 | fstateUpdateCount = 0L; | |
201 | filteredOutEventsCount = 0L; | |
202 | } | |
203 | ||
204 | /** | |
205 | * Multi-threading not expected | |
206 | */ | |
207 | protected void incrementBeforeEventCount() { | |
208 | fbeforeEventCount++; | |
209 | } | |
210 | ||
211 | /** | |
212 | * Multi-threading not expected | |
213 | */ | |
214 | protected void incrementStateUpdateCount() { | |
215 | fstateUpdateCount++; | |
216 | } | |
217 | } |