1 /* |
|
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
|
4 * |
|
5 * This code is free software; you can redistribute it and/or modify it |
|
6 * under the terms of the GNU General Public License version 2 only, as |
|
7 * published by the Free Software Foundation. |
|
8 * |
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT |
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
12 * version 2 for more details (a copy is included in the LICENSE file that |
|
13 * accompanied this code). |
|
14 * |
|
15 * You should have received a copy of the GNU General Public License version |
|
16 * 2 along with this work; if not, write to the Free Software Foundation, |
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
18 * |
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
20 * or visit www.oracle.com if you need additional information or have any |
|
21 * questions. |
|
22 * |
|
23 */ |
|
24 #include "precompiled.hpp" |
|
25 #include "logging/logTagLevelExpression.hpp" |
|
26 #include "logging/logTagSet.hpp" |
|
27 #include "runtime/arguments.hpp" |
|
28 #include "runtime/os.inline.hpp" |
|
29 |
|
30 const char* LogTagLevelExpression::DefaultExpressionString = "all"; |
|
31 |
|
32 static bool matches_tagset(const LogTagType tags[], |
|
33 bool allow_other_tags, |
|
34 const LogTagSet& ts) { |
|
35 bool contains_all = true; |
|
36 size_t tag_idx; |
|
37 for (tag_idx = 0; tag_idx < LogTag::MaxTags && tags[tag_idx] != LogTag::__NO_TAG; tag_idx++) { |
|
38 if (!ts.contains(tags[tag_idx])) { |
|
39 contains_all = false; |
|
40 break; |
|
41 } |
|
42 } |
|
43 // All tags in the expression must be part of the tagset, |
|
44 // and either the expression allows other tags (has a wildcard), |
|
45 // or the number of tags in the expression and tagset must match. |
|
46 return contains_all && (allow_other_tags || tag_idx == ts.ntags()); |
|
47 } |
|
48 |
|
49 bool LogTagLevelExpression::verify_tagsets(outputStream* out) const { |
|
50 bool valid = true; |
|
51 |
|
52 for (size_t i = 0; i < _ncombinations; i++) { |
|
53 bool matched = false; |
|
54 for (LogTagSet* ts = LogTagSet::first(); ts != NULL; ts = ts->next()) { |
|
55 if (matches_tagset(_tags[i], _allow_other_tags[i], *ts)) { |
|
56 matched = true; |
|
57 break; |
|
58 } |
|
59 } |
|
60 |
|
61 if (!matched) { |
|
62 // If this was the first invalid combination, write the message header |
|
63 if (valid && out != NULL) { |
|
64 out->print("No tag set matches selection(s): "); |
|
65 } |
|
66 valid = false; |
|
67 |
|
68 // Break as soon as possible unless listing all invalid combinations |
|
69 if (out == NULL) { |
|
70 break; |
|
71 } |
|
72 |
|
73 // List the combination on the outputStream |
|
74 for (size_t t = 0; t < LogTag::MaxTags && _tags[i][t] != LogTag::__NO_TAG; t++) { |
|
75 out->print("%s%s", (t == 0 ? "" : "+"), LogTag::name(_tags[i][t])); |
|
76 } |
|
77 if (_allow_other_tags[i]) { |
|
78 out->print("*"); |
|
79 } |
|
80 out->print(" "); |
|
81 } |
|
82 } |
|
83 |
|
84 if (!valid && out != NULL) { |
|
85 out->cr(); |
|
86 } |
|
87 |
|
88 return valid; |
|
89 } |
|
90 |
|
91 bool LogTagLevelExpression::parse(const char* str, outputStream* errstream) { |
|
92 bool success = true; |
|
93 if (str == NULL || strcmp(str, "") == 0) { |
|
94 str = DefaultExpressionString; |
|
95 } |
|
96 char* copy = os::strdup_check_oom(str, mtLogging); |
|
97 // Split string on commas |
|
98 for (char *comma_pos = copy, *cur = copy; success && comma_pos != NULL; cur = comma_pos + 1) { |
|
99 if (_ncombinations == MaxCombinations) { |
|
100 if (errstream != NULL) { |
|
101 errstream->print_cr("Can not have more than " SIZE_FORMAT " tag combinations in a what-expression.", |
|
102 MaxCombinations); |
|
103 } |
|
104 success = false; |
|
105 break; |
|
106 } |
|
107 |
|
108 comma_pos = strchr(cur, ','); |
|
109 if (comma_pos != NULL) { |
|
110 *comma_pos = '\0'; |
|
111 } |
|
112 |
|
113 // Parse the level, if specified |
|
114 LogLevelType level = LogLevel::Unspecified; |
|
115 char* equals = strchr(cur, '='); |
|
116 if (equals != NULL) { |
|
117 level = LogLevel::from_string(equals + 1); |
|
118 if (level == LogLevel::Invalid) { |
|
119 if (errstream != NULL) { |
|
120 errstream->print_cr("Invalid level '%s' in what-expression.", equals + 1); |
|
121 } |
|
122 success = false; |
|
123 break; |
|
124 } |
|
125 *equals = '\0'; // now ignore "=level" part of substr |
|
126 } |
|
127 set_level(level); |
|
128 |
|
129 // Parse special tags such as 'all' |
|
130 if (strcmp(cur, "all") == 0) { |
|
131 set_allow_other_tags(); |
|
132 new_combination(); |
|
133 continue; |
|
134 } |
|
135 |
|
136 // Check for '*' suffix |
|
137 char* asterisk_pos = strchr(cur, '*'); |
|
138 if (asterisk_pos != NULL && asterisk_pos[1] == '\0') { |
|
139 set_allow_other_tags(); |
|
140 *asterisk_pos = '\0'; |
|
141 } |
|
142 |
|
143 // Parse the tag expression (t1+t2+...+tn) |
|
144 char* plus_pos; |
|
145 char* cur_tag = cur; |
|
146 do { |
|
147 plus_pos = strchr(cur_tag, '+'); |
|
148 if (plus_pos != NULL) { |
|
149 *plus_pos = '\0'; |
|
150 } |
|
151 LogTagType tag = LogTag::from_string(cur_tag); |
|
152 if (tag == LogTag::__NO_TAG) { |
|
153 if (errstream != NULL) { |
|
154 errstream->print_cr("Invalid tag '%s' in what-expression.", cur_tag); |
|
155 } |
|
156 success = false; |
|
157 break; |
|
158 } |
|
159 if (_ntags == LogTag::MaxTags) { |
|
160 if (errstream != NULL) { |
|
161 errstream->print_cr("Tag combination exceeds the maximum of " SIZE_FORMAT " tags.", |
|
162 LogTag::MaxTags); |
|
163 } |
|
164 success = false; |
|
165 break; |
|
166 } |
|
167 if (!add_tag(tag)) { |
|
168 if (errstream != NULL) { |
|
169 errstream->print_cr("Tag combination have duplicate tag '%s' in what-expression.", |
|
170 cur_tag); |
|
171 } |
|
172 success = false; |
|
173 break; |
|
174 } |
|
175 cur_tag = plus_pos + 1; |
|
176 } while (plus_pos != NULL); |
|
177 |
|
178 new_combination(); |
|
179 } |
|
180 |
|
181 os::free(copy); |
|
182 return success; |
|
183 } |
|
184 |
|
185 LogLevelType LogTagLevelExpression::level_for(const LogTagSet& ts) const { |
|
186 // Return NotMentioned if the given tagset isn't covered by this expression. |
|
187 LogLevelType level = LogLevel::NotMentioned; |
|
188 for (size_t combination = 0; combination < _ncombinations; combination++) { |
|
189 if (matches_tagset(_tags[combination], _allow_other_tags[combination], ts)) { |
|
190 level = _level[combination]; |
|
191 } |
|
192 } |
|
193 return level; |
|
194 } |
|
195 |
|