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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
|
/* Copyright (C) 2010 Sergei Golubchik and Monty Program Ab
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; version 2 of the License.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
#include "feedback.h"
/* MySQL functions/variables not declared in mysql_priv.h */
int fill_variables(THD *thd, TABLE_LIST *tables, COND *cond);
int fill_status(THD *thd, TABLE_LIST *tables, COND *cond);
extern ST_SCHEMA_TABLE schema_tables[];
namespace feedback {
#ifndef DBUG_OFF
ulong debug_startup_interval, debug_first_interval, debug_interval;
#endif
char server_uid_buf[SERVER_UID_SIZE+1]; ///< server uid will be written here
/* backing store for system variables */
static char *server_uid= server_uid_buf, *url, *http_proxy;
char *user_info;
ulong send_timeout, send_retry_wait;
/**
these three are used to communicate the shutdown signal to the
background thread
*/
mysql_mutex_t sleep_mutex;
mysql_cond_t sleep_condition;
volatile bool shutdown_plugin;
static pthread_t sender_thread;
#ifdef HAVE_PSI_INTERFACE
static PSI_mutex_key key_sleep_mutex;
static PSI_mutex_info mutex_list[]=
{{ &key_sleep_mutex, "sleep_mutex", PSI_FLAG_GLOBAL}};
static PSI_cond_key key_sleep_cond;
static PSI_cond_info cond_list[]=
{{ &key_sleep_cond, "sleep_condition", PSI_FLAG_GLOBAL}};
static PSI_thread_key key_sender_thread;
static PSI_thread_info thread_list[] =
{{&key_sender_thread, "sender_thread", 0}};
#endif
Url **urls; ///< list of urls to send the report to
uint url_count;
ST_SCHEMA_TABLE *i_s_feedback; ///< table descriptor for our I_S table
/*
the column names *must* match column names in GLOBAL_VARIABLES and
GLOBAL_STATUS tables otherwise condition pushdown below will not work
*/
static ST_FIELD_INFO feedback_fields[] =
{
Show::Column("VARIABLE_NAME", Show::Varchar(255), NOT_NULL),
Show::Column("VARIABLE_VALUE", Show::Varchar(1024), NOT_NULL),
Show::CEnd()
};
static COND * const OOM= (COND*)1;
/**
Generate the COND tree for the condition pushdown
This function takes a list of strings and generates an Item tree
corresponding to the following expression:
field LIKE str1 OR field LIKE str2 OR field LIKE str3 OR ...
where 'field' is the first field in the table - VARIABLE_NAME field -
and str1, str2... are strings from the list.
This condition is used to filter the selected rows, emulating
SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE ...
*/
static COND* make_cond(THD *thd, TABLE_LIST *tables, LEX_STRING *filter)
{
Item_cond_or *res= NULL;
/* A reference to this context will be stored in Item_field */
Name_resolution_context *nrc= new (thd->mem_root) Name_resolution_context;
LEX_CSTRING &db= tables->db;
LEX_CSTRING &table= tables->alias;
LEX_CSTRING &field= tables->table->field[0]->field_name;
CHARSET_INFO *cs= &my_charset_latin1;
if (!filter->str || !nrc)
return 0;
nrc->resolve_in_table_list_only(tables);
nrc->select_lex= tables->select_lex;
res= new (thd->mem_root) Item_cond_or(thd);
if (!res)
return OOM;
for (; filter->str; filter++)
{
Item_field *fld= new (thd->mem_root) Item_field(thd, nrc, db, table,
field);
Item_string *pattern= new (thd->mem_root) Item_string(thd, filter->str,
(uint) filter->length, cs);
Item_string *escape= new (thd->mem_root) Item_string(thd, "\\", 1, cs);
if (!fld || !pattern || !escape)
return OOM;
Item_func_like *like= new (thd->mem_root) Item_func_like(thd, fld, pattern,
escape, 0);
if (!like)
return OOM;
res->add(like, thd->mem_root);
}
if (res->fix_fields(thd, (Item**)&res))
return OOM;
return res;
}
/**
System variables that we want to see in the feedback report
*/
static LEX_STRING vars_filter[]= {
{C_STRING_WITH_LEN("auto\\_increment%")},
{C_STRING_WITH_LEN("binlog\\_format")},
{C_STRING_WITH_LEN("character\\_set\\_%")},
{C_STRING_WITH_LEN("collation%")},
{C_STRING_WITH_LEN("engine\\_condition\\_pushdown")},
{C_STRING_WITH_LEN("event\\_scheduler")},
{C_STRING_WITH_LEN("feedback\\_%")},
{C_STRING_WITH_LEN("ft\\_m%")},
{C_STRING_WITH_LEN("have\\_%")},
{C_STRING_WITH_LEN("%\\_size")},
{C_STRING_WITH_LEN("innodb_f%")},
{C_STRING_WITH_LEN("%\\_length%")},
{C_STRING_WITH_LEN("%\\_timeout")},
{C_STRING_WITH_LEN("large\\_%")},
{C_STRING_WITH_LEN("lc_time_names")},
{C_STRING_WITH_LEN("log")},
{C_STRING_WITH_LEN("log_bin")},
{C_STRING_WITH_LEN("log_output")},
{C_STRING_WITH_LEN("log_slow_queries")},
{C_STRING_WITH_LEN("log_slow_time")},
{C_STRING_WITH_LEN("lower_case%")},
{C_STRING_WITH_LEN("max_allowed_packet")},
{C_STRING_WITH_LEN("max_connections")},
{C_STRING_WITH_LEN("max_prepared_stmt_count")},
{C_STRING_WITH_LEN("max_sp_recursion_depth")},
{C_STRING_WITH_LEN("max_user_connections")},
{C_STRING_WITH_LEN("max_write_lock_count")},
{C_STRING_WITH_LEN("myisam_recover_options")},
{C_STRING_WITH_LEN("myisam_repair_threads")},
{C_STRING_WITH_LEN("myisam_stats_method")},
{C_STRING_WITH_LEN("myisam_use_mmap")},
{C_STRING_WITH_LEN("net\\_%")},
{C_STRING_WITH_LEN("new")},
{C_STRING_WITH_LEN("old%")},
{C_STRING_WITH_LEN("optimizer%")},
{C_STRING_WITH_LEN("profiling")},
{C_STRING_WITH_LEN("query_cache%")},
{C_STRING_WITH_LEN("secure_auth")},
{C_STRING_WITH_LEN("slow_launch_time")},
{C_STRING_WITH_LEN("sql%")},
{C_STRING_WITH_LEN("default_storage_engine")},
{C_STRING_WITH_LEN("sync_binlog")},
{C_STRING_WITH_LEN("table_definition_cache")},
{C_STRING_WITH_LEN("table_open_cache")},
{C_STRING_WITH_LEN("thread_handling")},
{C_STRING_WITH_LEN("time_zone")},
{C_STRING_WITH_LEN("version%")},
{0, 0}
};
/**
Status variables that we want to see in the feedback report
(empty list = no WHERE condition)
*/
static LEX_STRING status_filter[]= {{0, 0}};
/**
Fill our I_S table with data
This function works by invoking fill_variables() and
fill_status() of the corresponding I_S tables - to have
their data UNION-ed in the same target table.
After that it invokes our own fill_* functions
from the utils.cc - to get the data that aren't available in the
I_S.GLOBAL_VARIABLES and I_S.GLOBAL_STATUS.
*/
int fill_feedback(THD *thd, TABLE_LIST *tables, COND *unused)
{
int res;
COND *cond;
tables->schema_table= schema_tables + SCH_GLOBAL_VARIABLES;
cond= make_cond(thd, tables, vars_filter);
res= (cond == OOM) ? 1 : fill_variables(thd, tables, cond);
tables->schema_table= schema_tables + SCH_GLOBAL_STATUS;
if (!res)
{
cond= make_cond(thd, tables, status_filter);
res= (cond == OOM) ? 1 : fill_status(thd, tables, cond);
}
tables->schema_table= i_s_feedback;
res= res || fill_plugin_version(thd, tables)
|| fill_misc_data(thd, tables)
|| fill_linux_info(thd, tables)
|| fill_collation_statistics(thd, tables);
return res;
}
/**
plugin initialization function
*/
static int init(void *p)
{
i_s_feedback= (ST_SCHEMA_TABLE*) p;
/* initialize the I_S descriptor structure */
i_s_feedback->fields_info= feedback_fields; ///< field descriptor
i_s_feedback->fill_table= fill_feedback; ///< how to fill the I_S table
i_s_feedback->idx_field1 = 0; ///< virtual index on the 1st col
#ifdef HAVE_PSI_INTERFACE
#define PSI_register(X) \
if(PSI_server) PSI_server->register_ ## X("feedback", X ## _list, array_elements(X ## _list))
#else
#define PSI_register(X) /* no-op */
#endif
PSI_register(mutex);
PSI_register(cond);
PSI_register(thread);
if (calculate_server_uid(server_uid_buf))
return 1;
prepare_linux_info();
#ifndef DBUG_OFF
if (startup_interval != debug_startup_interval ||
first_interval != debug_first_interval ||
interval != debug_interval)
{
startup_interval= debug_startup_interval;
first_interval= debug_first_interval;
interval= debug_interval;
user_info= const_cast<char*>("mysql-test");
}
#endif
url_count= 0;
if (*url)
{
// now we split url on spaces and store them in Url objects
int slot;
char *s, *e;
for (s= url, url_count= 1; *s; s++)
if (*s == ' ')
url_count++;
urls= (Url **)my_malloc(PSI_INSTRUMENT_ME, url_count*sizeof(Url*), MYF(MY_WME));
if (!urls)
return 1;
for (s= url, e = url+1, slot= 0; e[-1]; e++)
if (*e == 0 || *e == ' ')
{
if (e > s && (urls[slot]= Url::create(s, e - s)))
{
if (urls[slot]->set_proxy(http_proxy,
http_proxy ? strlen(http_proxy) : 0))
sql_print_error("feedback plugin: invalid proxy '%s'",
http_proxy ? http_proxy : "");
slot++;
}
else
{
if (e > s)
sql_print_error("feedback plugin: invalid url '%.*s'", (int)(e-s), s);
url_count--;
}
s= e + 1;
}
// create a background thread to handle urls, if any
if (url_count)
{
mysql_mutex_init(0, &sleep_mutex, 0);
mysql_cond_init(0, &sleep_condition, 0);
shutdown_plugin= false;
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
if (pthread_create(&sender_thread, &attr, background_thread, 0) != 0)
{
sql_print_error("feedback plugin: failed to start a background thread");
return 1;
}
}
else
my_free(urls);
}
return 0;
}
/**
plugin deinitialization function
*/
static int free(void *p)
{
if (url_count)
{
mysql_mutex_lock(&sleep_mutex);
shutdown_plugin= true;
mysql_cond_signal(&sleep_condition);
mysql_mutex_unlock(&sleep_mutex);
pthread_join(sender_thread, NULL);
mysql_mutex_destroy(&sleep_mutex);
mysql_cond_destroy(&sleep_condition);
for (uint i= 0; i < url_count; i++)
delete urls[i];
my_free(urls);
}
return 0;
}
#ifdef HAVE_OPENSSL
#define DEFAULT_PROTO "https://"
#else
#define DEFAULT_PROTO "http://"
#endif
static MYSQL_SYSVAR_STR(server_uid, server_uid,
PLUGIN_VAR_READONLY | PLUGIN_VAR_NOCMDOPT,
"Automatically calculated server unique id hash.", NULL, NULL, 0);
static MYSQL_SYSVAR_STR(user_info, user_info,
PLUGIN_VAR_READONLY | PLUGIN_VAR_RQCMDARG,
"User specified string that will be included in the feedback report.",
NULL, NULL, "");
static MYSQL_SYSVAR_STR(url, url, PLUGIN_VAR_READONLY | PLUGIN_VAR_RQCMDARG,
"Space separated URLs to send the feedback report to.", NULL, NULL,
DEFAULT_PROTO "feedback.mariadb.org/rest/v1/post");
static MYSQL_SYSVAR_ULONG(send_timeout, send_timeout, PLUGIN_VAR_RQCMDARG,
"Timeout (in seconds) for the sending the report.",
NULL, NULL, 60, 1, 60*60*24, 1);
static MYSQL_SYSVAR_ULONG(send_retry_wait, send_retry_wait, PLUGIN_VAR_RQCMDARG,
"Wait this many seconds before retrying a failed send.",
NULL, NULL, 60, 1, 60*60*24, 1);
static MYSQL_SYSVAR_STR(http_proxy, http_proxy,
PLUGIN_VAR_READONLY | PLUGIN_VAR_RQCMDARG,
"Proxy server host:port.", NULL, NULL,0);
#ifndef DBUG_OFF
static MYSQL_SYSVAR_ULONG(debug_startup_interval, debug_startup_interval,
PLUGIN_VAR_RQCMDARG, "for debugging only",
NULL, NULL, startup_interval, 1, INT_MAX32, 1);
static MYSQL_SYSVAR_ULONG(debug_first_interval, debug_first_interval,
PLUGIN_VAR_RQCMDARG, "for debugging only",
NULL, NULL, first_interval, 1, INT_MAX32, 1);
static MYSQL_SYSVAR_ULONG(debug_interval, debug_interval,
PLUGIN_VAR_RQCMDARG, "for debugging only",
NULL, NULL, interval, 1, INT_MAX32, 1);
#endif
static struct st_mysql_sys_var* settings[] = {
MYSQL_SYSVAR(server_uid),
MYSQL_SYSVAR(user_info),
MYSQL_SYSVAR(url),
MYSQL_SYSVAR(send_timeout),
MYSQL_SYSVAR(send_retry_wait),
MYSQL_SYSVAR(http_proxy),
#ifndef DBUG_OFF
MYSQL_SYSVAR(debug_startup_interval),
MYSQL_SYSVAR(debug_first_interval),
MYSQL_SYSVAR(debug_interval),
#endif
NULL
};
static struct st_mysql_information_schema feedback =
{ MYSQL_INFORMATION_SCHEMA_INTERFACE_VERSION };
} // namespace feedback
maria_declare_plugin(feedback)
{
MYSQL_INFORMATION_SCHEMA_PLUGIN,
&feedback::feedback,
"FEEDBACK",
"Sergei Golubchik",
"MariaDB User Feedback Plugin",
PLUGIN_LICENSE_GPL,
feedback::init,
feedback::free,
0x0101,
NULL,
feedback::settings,
"1.1",
MariaDB_PLUGIN_MATURITY_STABLE
}
maria_declare_plugin_end;
|