2 * collectd - src/mysql.c
3 * Copyright (C) 2005 Florian octo Forster
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * Florian octo Forster <octo at verplant.org>
26 #include "configfile.h"
28 #ifdef HAVE_MYSQL_MYSQL_H
29 #include <mysql/mysql.h>
32 #define MODULE_NAME "mysql"
35 # define MYSQL_HAVE_READ 1
37 # define MYSQL_HAVE_READ 0
42 static char *host = "localhost";
45 static char *db = NULL;
47 static char init_suceeded = 0;
49 static char *commands_file = "mysql/mysql_commands-%s.rrd";
50 static char *handler_file = "mysql/mysql_handler-%s.rrd";
51 static char *traffic_file = "traffic-mysql.rrd";
53 static char *commands_ds_def[] =
55 "DS:value:COUNTER:25:0:U",
58 static int commands_ds_num = 1;
60 static char *handler_ds_def[] =
62 "DS:value:COUNTER:25:0:U",
65 static int handler_ds_num = 1;
67 static char *traffic_ds_def[] =
69 "DS:incoming:COUNTER:25:0:U",
70 "DS:outgoing:COUNTER:25:0:U",
73 static int traffic_ds_num = 2;
75 static char *config_keys[] =
83 static int config_keys_num = 4;
86 static MYSQL *getconnection (void)
94 if ((err = mysql_ping (con)) != 0)
96 syslog (LOG_WARNING, "mysql_ping failed: %s", mysql_error (con));
106 if ((con = mysql_init (con)) == NULL)
108 syslog (LOG_ERR, "mysql_init failed: %s", mysql_error (con));
113 if (mysql_real_connect (con, host, user, pass, db, 0, NULL, 0) == NULL)
115 syslog (LOG_ERR, "mysql_real_connect failed: %s", mysql_error (con));
124 } /* static MYSQL *getconnection (void) */
125 #endif /* MYSQL_HAVE_READ */
127 static void init (void)
130 if (getconnection () != NULL)
134 syslog (LOG_ERR, "The `mysql' plugin will be disabled because `init' failed to connect to `%s'", host);
137 #endif /* MYSQL_HAVE_READ */
142 static int config (char *key, char *value)
144 if (strcasecmp (key, "host") == 0)
145 return ((host = strdup (value)) == NULL ? 1 : 0);
146 else if (strcasecmp (key, "user") == 0)
147 return ((user = strdup (value)) == NULL ? 1 : 0);
148 else if (strcasecmp (key, "password") == 0)
149 return ((pass = strdup (value)) == NULL ? 1 : 0);
150 else if (strcasecmp (key, "database") == 0)
151 return ((db = strdup (value)) == NULL ? 1 : 0);
156 static void commands_write (char *host, char *inst, char *val)
160 if (snprintf (buf, BUFSIZE, commands_file, inst) >= BUFSIZE)
163 rrd_update_file (host, buf, val, commands_ds_def, commands_ds_num);
166 static void handler_write (char *host, char *inst, char *val)
170 if (snprintf (buf, BUFSIZE, handler_file, inst) >= BUFSIZE)
173 rrd_update_file (host, buf, val, handler_ds_def, handler_ds_num);
176 static void traffic_write (char *host, char *inst, char *val)
178 rrd_update_file (host, traffic_file, val, traffic_ds_def, traffic_ds_num);
182 static void commands_submit (char *inst, unsigned long long value)
187 status = snprintf (buf, BUFSIZE, "%u:%llu", (unsigned int) curtime, value);
191 syslog (LOG_ERR, "snprintf failed");
194 else if (status >= BUFSIZE)
196 syslog (LOG_WARNING, "snprintf was truncated");
200 plugin_submit ("mysql_commands", inst, buf);
203 static void handler_submit (char *inst, unsigned long long value)
208 status = snprintf (buf, BUFSIZE, "%u:%llu", (unsigned int) curtime, value);
212 syslog (LOG_ERR, "snprintf failed");
215 else if (status >= BUFSIZE)
217 syslog (LOG_WARNING, "snprintf was truncated");
221 plugin_submit ("mysql_handler", inst, buf);
224 static void traffic_submit (unsigned long long incoming,
225 unsigned long long outgoing)
230 status = snprintf (buf, BUFSIZE, "%u:%llu:%llu", (unsigned int) curtime,
235 syslog (LOG_ERR, "snprintf failed");
238 else if (status >= BUFSIZE)
240 syslog (LOG_WARNING, "snprintf was truncated");
244 plugin_submit ("mysql_traffic", "-", buf);
247 static void mysql_read (void)
256 unsigned long long traffic_incoming = 0LL;
257 unsigned long long traffic_outgoing = 0LL;
259 if (init_suceeded == 0)
262 /* An error message will have been printed in this case */
263 if ((con = getconnection ()) == NULL)
266 query = "SHOW STATUS";
267 query_len = strlen (query);
269 if (mysql_real_query (con, query, query_len))
271 syslog (LOG_ERR, "mysql_real_query failed: %s\n", mysql_error (con));
275 if ((res = mysql_store_result (con)) == NULL)
277 syslog (LOG_ERR, "mysql_store_result failed: %s\n", mysql_error (con));
281 field_num = mysql_num_fields (res);
282 while ((row = mysql_fetch_row (res)))
285 unsigned long long val;
288 val = atoll (row[1]);
293 if (strncmp (key, "Com_", 4) == 0)
295 /* Ignore `prepared statements' */
296 if (strncmp (key, "Com_stmt_", 9) != 0)
297 commands_submit (key + 4, val);
299 else if (strncmp (key, "Handler_", 8) == 0)
301 handler_submit (key + 8, val);
303 else if (strncmp (key, "Bytes_", 6) == 0)
305 if (strcmp (key, "Bytes_received") == 0)
306 traffic_incoming += val;
307 else if (strcmp (key, "Bytes_sent") == 0)
308 traffic_outgoing += val;
311 mysql_free_result (res); res = NULL;
313 traffic_submit (traffic_incoming, traffic_outgoing);
315 /* mysql_close (con); */
320 # define mysql_read NULL
321 #endif /* MYSQL_HAVE_READ */
323 void module_register (void)
325 plugin_register (MODULE_NAME, init, mysql_read, NULL);
326 plugin_register ("mysql_commands", NULL, NULL, commands_write);
327 plugin_register ("mysql_handler", NULL, NULL, handler_write);
328 plugin_register ("mysql_traffic", NULL, NULL, traffic_write);
329 cf_register (MODULE_NAME, config, config_keys, config_keys_num);