blob: ba6a08c2c258221575e209eda5bbe2b61f225900 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.loganalysis.heuristic;
import com.android.loganalysis.item.KernelLogItem;
import com.android.loganalysis.item.MiscKernelLogItem;
import com.android.loganalysis.parser.KernelLogParser;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.Date;
/**
* A {@link IHeuristic} to detect if there are any kernel resets.
*/
public class KernelResetHeuristic extends AbstractHeuristic {
/** Constant for JSON output */
public static final String KERNEL_RESETS = "KERNEL_RESETS";
private static final String HEURISTIC_NAME = "Kernel reset";
private static final String HEURISTIC_TYPE = "KERNEL_RESET_HEURISTIC";
private KernelLogItem mKernelLog = null;
/**
* {@inheritDoc}
*/
@Override
public void addKernelLog(Date timestamp, KernelLogItem kernelLog) {
mKernelLog = kernelLog;
}
/**
* {@inheritDoc}
*/
@Override
public boolean failed() {
return (mKernelLog != null &&
mKernelLog.getMiscEvents(KernelLogParser.KERNEL_RESET).size() > 0);
}
/**
* {@inheritDoc}
*/
public String getType() {
return HEURISTIC_TYPE;
}
/**
* {@inheritDoc}
*/
public String getName() {
return HEURISTIC_NAME;
}
/**
* {@inheritDoc}
*/
@Override
public String getSummary() {
if (!failed()) {
return null;
}
return "Found a kernel reset";
}
/**
* {@inheritDoc}
*/
@Override
public String getDetails() {
if (!failed()) {
return null;
}
StringBuilder sb = new StringBuilder();
for (MiscKernelLogItem item : mKernelLog.getMiscEvents(KernelLogParser.KERNEL_RESET)) {
sb.append(String.format("Reason: %s, Time: %.6f\nPreamble:\n%s\n\n", item.getMessage(),
item.getEventTime(), item.getPreamble()));
}
return sb.toString();
}
/**
* {@inheritDoc}
*/
@Override
public JSONObject toJson() {
JSONObject output = super.toJson();
try {
JSONArray kernelResets = new JSONArray();
for (MiscKernelLogItem item : mKernelLog.getMiscEvents(KernelLogParser.KERNEL_RESET)) {
kernelResets.put(item.toJson());
}
output.put(KERNEL_RESETS, kernelResets);
} catch (JSONException e) {
// Ignore
}
return output;
}
}
|
