2 * collectd - src/vserver.c
3 * Copyright (C) 2006,2007 Sebastian Harl
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; only version 2 of the license is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Sebastian Harl <sh at tokkee.org>
27 #include <sys/types.h>
31 #define MODULE_NAME "vserver"
32 #define PROCDIR "/proc/virtual"
34 #if defined(KERNEL_LINUX)
35 # define VSERVER_HAVE_READ 1
37 # define VSERVER_HAVE_READ 0
38 #endif /* defined(KERNEL_LINUX) */
41 static int pagesize = 0;
43 static int vserver_init (void)
45 /* XXX Should we check for getpagesize () in configure?
46 * What's the right thing to do, if there is no getpagesize ()? */
47 pagesize = getpagesize ();
50 } /* static void vserver_init(void) */
52 static void traffic_submit (const char *plugin_instance,
53 const char *type_instance, counter_t rx, counter_t tx)
56 value_list_t vl = VALUE_LIST_INIT;
58 values[0].counter = rx;
59 values[1].counter = tx;
62 vl.values_len = STATIC_ARRAY_SIZE (values);
63 vl.time = time (NULL);
64 strcpy (vl.host, hostname_g);
65 strcpy (vl.plugin, "vserver");
66 strncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
67 strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
69 plugin_dispatch_values ("if_octets", &vl);
70 } /* void traffic_submit */
72 static void load_submit (const char *plugin_instance,
73 gauge_t snum, gauge_t mnum, gauge_t lnum)
76 value_list_t vl = VALUE_LIST_INIT;
78 values[0].gauge = snum;
79 values[1].gauge = mnum;
80 values[2].gauge = lnum;
83 vl.values_len = STATIC_ARRAY_SIZE (values);
84 vl.time = time (NULL);
85 strcpy (vl.host, hostname_g);
86 strcpy (vl.plugin, "vserver");
87 strncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
89 plugin_dispatch_values ("load", &vl);
92 static void submit_gauge (const char *plugin_instance, const char *type,
93 const char *type_instance, gauge_t value)
97 value_list_t vl = VALUE_LIST_INIT;
99 values[0].gauge = value;
102 vl.values_len = STATIC_ARRAY_SIZE (values);
103 vl.time = time (NULL);
104 strcpy (vl.host, hostname_g);
105 strcpy (vl.plugin, "vserver");
106 strncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
107 strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
109 plugin_dispatch_values (type, &vl);
110 } /* void submit_gauge */
112 static inline long long __get_sock_bytes(const char *s)
122 static int vserver_read (void)
125 struct dirent *dent; /* 42 */
128 if (NULL == (proc = opendir (PROCDIR)))
131 ERROR ("vserver plugin: fopen (%s): %s", PROCDIR,
132 sstrerror (errno, errbuf, sizeof (errbuf)));
136 while (NULL != (dent = readdir (proc)))
142 char buffer[BUFSIZE];
146 if (dent->d_name[0] == '.')
149 /* This is not a directory */
150 if (dent->d_type != DT_DIR)
153 /* socket message accounting */
154 len = snprintf (file, BUFSIZE, PROCDIR "/%s/cacct", dent->d_name);
155 if ((len < 0) || (len >= BUFSIZE))
158 if (NULL == (fh = fopen (file, "r")))
161 ERROR ("Cannot open '%s': %s", file,
162 sstrerror (errno, errbuf, sizeof (errbuf)));
165 while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
171 if (strsplit (buffer, cols, 4) < 4)
174 if (0 == strcmp (cols[0], "UNIX:"))
175 type_instance = "unix";
176 else if (0 == strcmp (cols[0], "INET:"))
177 type_instance = "inet";
178 else if (0 == strcmp (cols[0], "INET6:"))
179 type_instance = "inet6";
180 else if (0 == strcmp (cols[0], "OTHER:"))
181 type_instance = "other";
182 else if (0 == strcmp (cols[0], "UNSPEC:"))
183 type_instance = "unspec";
187 rx = __get_sock_bytes (cols[1]);
188 tx = __get_sock_bytes (cols[2]);
189 /* cols[3] == errors */
191 traffic_submit (dent->d_name, type_instance, rx, tx);
192 } /* while (fgets) */
200 /* thread information and load */
201 len = snprintf (file, BUFSIZE, PROCDIR "/%s/cvirt", dent->d_name);
202 if ((len < 0) || (len >= BUFSIZE))
205 if (NULL == (fh = fopen (file, "r")))
208 ERROR ("Cannot open '%s': %s", file,
209 sstrerror (errno, errbuf, sizeof (errbuf)));
212 while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
214 int n = strsplit (buffer, cols, 4);
221 if (0 == strcmp (cols[0], "nr_threads:"))
222 type_instance = "total";
223 else if (0 == strcmp (cols[0], "nr_running:"))
224 type_instance = "running";
225 else if (0 == strcmp (cols[0], "nr_unintr:"))
226 type_instance = "uninterruptable";
227 else if (0 == strcmp (cols[0], "nr_onhold:"))
228 type_instance = "onhold";
232 value = atof (cols[1]);
233 submit_gauge (dent->d_name, "vs_threads", type_instance, value);
236 if (0 == strcmp (cols[0], "loadavg:"))
238 gauge_t snum = atof (cols[1]);
239 gauge_t mnum = atof (cols[2]);
240 gauge_t lnum = atof (cols[3]);
241 load_submit (dent->d_name, snum, mnum, lnum);
244 } /* while (fgets) */
252 /* processes and memory usage */
253 len = snprintf (file, BUFSIZE, PROCDIR "/%s/limit", dent->d_name);
254 if ((len < 0) || (len >= BUFSIZE))
257 if (NULL == (fh = fopen (file, "r")))
260 ERROR ("Cannot open '%s': %s", file,
261 sstrerror (errno, errbuf, sizeof (errbuf)));
264 while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
266 char *type = "vs_memory";
270 if (strsplit (buffer, cols, 2) < 2)
273 if (0 == strcmp (cols[0], "PROC:"))
275 type = "vs_processes";
277 value = atof (cols[1]);
281 if (0 == strcmp (cols[0], "VM:"))
282 type_instance = "vm";
283 else if (0 == strcmp (cols[0], "VML:"))
284 type_instance = "vml";
285 else if (0 == strcmp (cols[0], "RSS:"))
286 type_instance = "rss";
287 else if (0 == strcmp (cols[0], "ANON:"))
288 type_instance = "anon";
292 value = atof (cols[1]) * pagesize;
295 submit_gauge (dent->d_name, type, type_instance, value);
296 } /* while (fgets) */
303 } /* while (readdir) */
308 } /* int vserver_read */
309 #endif /* VSERVER_HAVE_READ */
311 void module_register (void)
313 #if VSERVER_HAVE_READ
314 plugin_register_init ("vserver", vserver_init);
315 plugin_register_read ("vserver", vserver_read);
316 #endif /* VSERVER_HAVE_READ */
317 } /* void module_register(void) */
319 /* vim: set ts=4 sw=4 noexpandtab : */