2 * collectd - src/vserver.c
3 * Copyright (C) 2006,2007 Sebastian Harl
4 * Copyright (C) 2007-2010 Florian octo Forster
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
25 * Sebastian Harl <sh at tokkee.org>
26 * Florian octo Forster <octo at collectd.org>
35 #include <sys/types.h>
39 #define PROCDIR "/proc/virtual"
42 # error "No applicable input method."
45 static int pagesize = 0;
47 static int vserver_init (void)
49 /* XXX Should we check for getpagesize () in configure?
50 * What's the right thing to do, if there is no getpagesize ()? */
51 pagesize = getpagesize ();
54 } /* static void vserver_init(void) */
56 static void traffic_submit (const char *plugin_instance,
57 const char *type_instance, derive_t rx, derive_t tx)
59 value_list_t vl = VALUE_LIST_INIT;
66 vl.values_len = STATIC_ARRAY_SIZE (values);
67 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
68 sstrncpy (vl.plugin, "vserver", sizeof (vl.plugin));
69 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
70 sstrncpy (vl.type, "if_octets", sizeof (vl.type));
71 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
73 plugin_dispatch_values (&vl);
74 } /* void traffic_submit */
76 static void load_submit (const char *plugin_instance,
77 gauge_t snum, gauge_t mnum, gauge_t lnum)
79 value_list_t vl = VALUE_LIST_INIT;
87 vl.values_len = STATIC_ARRAY_SIZE (values);
88 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
89 sstrncpy (vl.plugin, "vserver", sizeof (vl.plugin));
90 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
91 sstrncpy (vl.type, "load", sizeof (vl.type));
93 plugin_dispatch_values (&vl);
96 static void submit_gauge (const char *plugin_instance, const char *type,
97 const char *type_instance, gauge_t value)
100 value_list_t vl = VALUE_LIST_INIT;
102 vl.values = &(value_t) { .gauge = value };
104 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
105 sstrncpy (vl.plugin, "vserver", sizeof (vl.plugin));
106 sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
107 sstrncpy (vl.type, type, sizeof (vl.type));
108 sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
110 plugin_dispatch_values (&vl);
111 } /* void submit_gauge */
113 static derive_t vserver_get_sock_bytes(const char *s)
124 status = parse_value (s, &v, DS_TYPE_DERIVE);
130 static int vserver_read (void)
133 # define DIRENT_BUFFER_SIZE (sizeof (struct dirent) + 1024 + 1)
135 # define DIRENT_BUFFER_SIZE (sizeof (struct dirent) + NAME_MAX + 1)
139 struct dirent *dent; /* 42 */
140 char dirent_buffer[DIRENT_BUFFER_SIZE];
143 proc = opendir (PROCDIR);
147 ERROR ("vserver plugin: fopen (%s): %s", PROCDIR,
148 sstrerror (errno, errbuf, sizeof (errbuf)));
158 char buffer[BUFSIZE];
165 status = readdir_r (proc, (struct dirent *) dirent_buffer, &dent);
169 ERROR ("vserver plugin: readdir_r failed: %s",
170 sstrerror (errno, errbuf, sizeof (errbuf)));
174 else if (dent == NULL)
176 /* end of directory */
180 if (dent->d_name[0] == '.')
183 len = ssnprintf (file, sizeof (file), PROCDIR "/%s", dent->d_name);
184 if ((len < 0) || (len >= BUFSIZE))
187 status = stat (file, &statbuf);
191 WARNING ("vserver plugin: stat (%s) failed: %s",
192 file, sstrerror (errno, errbuf, sizeof (errbuf)));
196 if (!S_ISDIR (statbuf.st_mode))
199 /* socket message accounting */
200 len = ssnprintf (file, sizeof (file),
201 PROCDIR "/%s/cacct", dent->d_name);
202 if ((len < 0) || ((size_t) len >= sizeof (file)))
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)))
216 const char *type_instance;
218 if (strsplit (buffer, cols, 4) < 4)
221 if (0 == strcmp (cols[0], "UNIX:"))
222 type_instance = "unix";
223 else if (0 == strcmp (cols[0], "INET:"))
224 type_instance = "inet";
225 else if (0 == strcmp (cols[0], "INET6:"))
226 type_instance = "inet6";
227 else if (0 == strcmp (cols[0], "OTHER:"))
228 type_instance = "other";
229 else if (0 == strcmp (cols[0], "UNSPEC:"))
230 type_instance = "unspec";
234 rx = vserver_get_sock_bytes (cols[1]);
235 tx = vserver_get_sock_bytes (cols[2]);
236 /* cols[3] == errors */
238 traffic_submit (dent->d_name, type_instance, rx, tx);
239 } /* while (fgets) */
247 /* thread information and load */
248 len = ssnprintf (file, sizeof (file),
249 PROCDIR "/%s/cvirt", dent->d_name);
250 if ((len < 0) || ((size_t) len >= sizeof (file)))
253 if (NULL == (fh = fopen (file, "r")))
256 ERROR ("Cannot open '%s': %s", file,
257 sstrerror (errno, errbuf, sizeof (errbuf)));
260 while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
262 int n = strsplit (buffer, cols, 4);
266 const char *type_instance;
269 if (0 == strcmp (cols[0], "nr_threads:"))
270 type_instance = "total";
271 else if (0 == strcmp (cols[0], "nr_running:"))
272 type_instance = "running";
273 else if (0 == strcmp (cols[0], "nr_unintr:"))
274 type_instance = "uninterruptable";
275 else if (0 == strcmp (cols[0], "nr_onhold:"))
276 type_instance = "onhold";
280 value = atof (cols[1]);
281 submit_gauge (dent->d_name, "vs_threads", type_instance, value);
284 if (0 == strcmp (cols[0], "loadavg:"))
286 gauge_t snum = atof (cols[1]);
287 gauge_t mnum = atof (cols[2]);
288 gauge_t lnum = atof (cols[3]);
289 load_submit (dent->d_name, snum, mnum, lnum);
292 } /* while (fgets) */
300 /* processes and memory usage */
301 len = ssnprintf (file, sizeof (file),
302 PROCDIR "/%s/limit", dent->d_name);
303 if ((len < 0) || ((size_t) len >= sizeof (file)))
306 if (NULL == (fh = fopen (file, "r")))
309 ERROR ("Cannot open '%s': %s", file,
310 sstrerror (errno, errbuf, sizeof (errbuf)));
313 while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
315 const char *type = "vs_memory";
316 const char *type_instance;
319 if (strsplit (buffer, cols, 2) < 2)
322 if (0 == strcmp (cols[0], "PROC:"))
324 type = "vs_processes";
326 value = atof (cols[1]);
330 if (0 == strcmp (cols[0], "VM:"))
331 type_instance = "vm";
332 else if (0 == strcmp (cols[0], "VML:"))
333 type_instance = "vml";
334 else if (0 == strcmp (cols[0], "RSS:"))
335 type_instance = "rss";
336 else if (0 == strcmp (cols[0], "ANON:"))
337 type_instance = "anon";
341 value = atof (cols[1]) * pagesize;
344 submit_gauge (dent->d_name, type, type_instance, value);
345 } /* while (fgets) */
352 } /* while (readdir) */
357 } /* int vserver_read */
359 void module_register (void)
361 plugin_register_init ("vserver", vserver_init);
362 plugin_register_read ("vserver", vserver_read);
363 } /* void module_register(void) */
365 /* vim: set ts=4 sw=4 noexpandtab : */