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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
ctdb logging code
Copyright (C) Ronnie Sahlberg 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "tdb.h"
#include "system/time.h"
#include "../include/ctdb_private.h"
#include "../include/ctdb_client.h"
int LogLevel = DEBUG_NOTICE;
int this_log_level = 0;
int log_ringbuf_size;
#define MAX_LOG_SIZE 128
static int first_entry = 0;
static int ringbuf_count = 0;
struct ctdb_log_entry {
int32_t level;
struct timeval t;
char message[MAX_LOG_SIZE];
};
static struct ctdb_log_entry *log_entries;
/*
* this function logs all messages for all levels to a ringbuffer
*/
static void log_ringbuffer_v(const char *format, va_list ap)
{
int ret;
int next_entry;
if (log_entries == NULL && log_ringbuf_size != 0) {
/* Hope this works. We cant log anything if it doesnt anyway */
log_entries = malloc(sizeof(struct ctdb_log_entry) * log_ringbuf_size);
}
if (log_entries == NULL) {
return;
}
next_entry = (first_entry + ringbuf_count) % log_ringbuf_size;
if (ringbuf_count > 0 && first_entry == next_entry) {
first_entry = (first_entry + 1) % log_ringbuf_size;
}
log_entries[next_entry].message[0] = '\0';
ret = vsnprintf(&log_entries[next_entry].message[0], MAX_LOG_SIZE, format, ap);
if (ret == -1) {
return;
}
/* Log messages longer than MAX_LOG_SIZE are truncated to MAX_LOG_SIZE-1
* bytes. In that case, add a newline.
*/
if (ret >= MAX_LOG_SIZE) {
log_entries[next_entry].message[MAX_LOG_SIZE-2] = '\n';
}
log_entries[next_entry].level = this_log_level;
log_entries[next_entry].t = timeval_current();
if (ringbuf_count < log_ringbuf_size) {
ringbuf_count++;
}
}
void log_ringbuffer(const char *format, ...)
{
va_list ap;
va_start(ap, format);
log_ringbuffer_v(format, ap);
va_end(ap);
}
void ctdb_log_ringbuffer_free(void)
{
if (log_entries != NULL) {
free(log_entries);
log_entries = NULL;
}
log_ringbuf_size = 0;
}
TDB_DATA ctdb_log_ringbuffer_collect_log(TALLOC_CTX *mem_ctx,
enum debug_level max_level)
{
TDB_DATA data;
FILE *f;
long fsize;
int tmp_entry;
struct tm *tm;
char tbuf[100];
int i;
DEBUG(DEBUG_ERR,("Marshalling %d log entries\n", ringbuf_count));
/* dump to a file, then send the file as a blob */
f = tmpfile();
if (f == NULL) {
DEBUG(DEBUG_ERR,(__location__ " Unable to open tmpfile - %s\n",
strerror(errno)));
return tdb_null;
}
for (i=0; i<ringbuf_count; i++) {
tmp_entry = (first_entry + i) % log_ringbuf_size;
if (log_entries[tmp_entry].level > max_level) {
continue;
}
tm = localtime(&log_entries[tmp_entry].t.tv_sec);
strftime(tbuf, sizeof(tbuf)-1,"%Y/%m/%d %H:%M:%S", tm);
if (log_entries[tmp_entry].message[0] != '\0') {
fprintf(f, "%s:%s %s", tbuf,
get_debug_by_level(log_entries[tmp_entry].level),
log_entries[tmp_entry].message);
}
}
fsize = ftell(f);
if (fsize < 0) {
fclose(f);
DEBUG(DEBUG_ERR, ("Cannot get file size for log entries\n"));
return tdb_null;
}
rewind(f);
data.dptr = talloc_size(NULL, fsize);
if (data.dptr == NULL) {
fclose(f);
DEBUG(DEBUG_ERR, (__location__ " Memory allocation error\n"));
return tdb_null;
}
data.dsize = fread(data.dptr, 1, fsize, f);
fclose(f);
DEBUG(DEBUG_ERR,("Marshalling log entries into a blob of %d bytes\n", (int)data.dsize));
return data;
}
void ctdb_clear_log(struct ctdb_context *ctdb)
{
first_entry = 0;
ringbuf_count = 0;
}
int32_t ctdb_control_clear_log(struct ctdb_context *ctdb)
{
ctdb_clear_log(ctdb);
return 0;
}
struct debug_levels debug_levels[] = {
{DEBUG_EMERG, "EMERG"},
{DEBUG_ALERT, "ALERT"},
{DEBUG_CRIT, "CRIT"},
{DEBUG_ERR, "ERR"},
{DEBUG_WARNING, "WARNING"},
{DEBUG_NOTICE, "NOTICE"},
{DEBUG_INFO, "INFO"},
{DEBUG_DEBUG, "DEBUG"},
{0, NULL}
};
const char *get_debug_by_level(int32_t level)
{
int i;
for (i=0; debug_levels[i].description != NULL; i++) {
if (debug_levels[i].level == level) {
return debug_levels[i].description;
}
}
return "Unknown";
}
int32_t get_debug_by_desc(const char *desc)
{
int i;
for (i=0; debug_levels[i].description != NULL; i++) {
if (!strcasecmp(debug_levels[i].description, desc)) {
return debug_levels[i].level;
}
}
return DEBUG_ERR;
}
|
