Beispiel #1
0
static int load_read (void)
{
#if defined(HAVE_GETLOADAVG)
    double load[3];

    if (getloadavg (load, 3) == 3)
        load_submit (load[LOADAVG_1MIN], load[LOADAVG_5MIN], load[LOADAVG_15MIN]);
    else
    {
        char errbuf[1024];
        WARNING ("load: getloadavg failed: %s",
                 sstrerror (errno, errbuf, sizeof (errbuf)));
    }
    /* #endif HAVE_GETLOADAVG */

#elif defined(KERNEL_LINUX)
    gauge_t snum, mnum, lnum;
    FILE *loadavg;
    char buffer[16];

    char *fields[8];
    int numfields;

    if ((loadavg = fopen ("/proc/loadavg", "r")) == NULL)
    {
        char errbuf[1024];
        WARNING ("load: fopen: %s",
                 sstrerror (errno, errbuf, sizeof (errbuf)));
        return (-1);
    }

    if (fgets (buffer, 16, loadavg) == NULL)
    {
        char errbuf[1024];
        WARNING ("load: fgets: %s",
                 sstrerror (errno, errbuf, sizeof (errbuf)));
        fclose (loadavg);
        return (-1);
    }

    if (fclose (loadavg))
    {
        char errbuf[1024];
        WARNING ("load: fclose: %s",
                 sstrerror (errno, errbuf, sizeof (errbuf)));
    }

    numfields = strsplit (buffer, fields, 8);

    if (numfields < 3)
        return (-1);

    snum = atof (fields[0]);
    mnum = atof (fields[1]);
    lnum = atof (fields[2]);

    load_submit (snum, mnum, lnum);
    /* #endif KERNEL_LINUX */

#elif HAVE_LIBSTATGRAB
    gauge_t snum, mnum, lnum;
    sg_load_stats *ls;

    if ((ls = sg_get_load_stats ()) == NULL)
        return;

    snum = ls->min1;
    mnum = ls->min5;
    lnum = ls->min15;

    load_submit (snum, mnum, lnum);
    /* #endif HAVE_LIBSTATGRAB */

#else
# error "No applicable input method."
#endif

    return (0);
}
Beispiel #2
0
static int vserver_read (void)
{
#if NAME_MAX < 1024
# define DIRENT_BUFFER_SIZE (sizeof (struct dirent) + 1024 + 1)
#else
# define DIRENT_BUFFER_SIZE (sizeof (struct dirent) + NAME_MAX + 1)
#endif

	DIR 			*proc;
	struct dirent 	*dent; /* 42 */
	char dirent_buffer[DIRENT_BUFFER_SIZE];

	errno = 0;
	proc = opendir (PROCDIR);
	if (proc == NULL)
	{
		char errbuf[1024];
		ERROR ("vserver plugin: fopen (%s): %s", PROCDIR, 
				sstrerror (errno, errbuf, sizeof (errbuf)));
		return (-1);
	}

	while (42)
	{
		int len;
		char file[BUFSIZE];

		FILE *fh;
		char buffer[BUFSIZE];

		struct stat statbuf;
		char *cols[4];

		int status;

		status = readdir_r (proc, (struct dirent *) dirent_buffer, &dent);
		if (status != 0)
		{
			char errbuf[4096];
			ERROR ("vserver plugin: readdir_r failed: %s",
					sstrerror (errno, errbuf, sizeof (errbuf)));
			closedir (proc);
			return (-1);
		}
		else if (dent == NULL)
		{
			/* end of directory */
			break;
		}

		if (dent->d_name[0] == '.')
			continue;

		len = ssnprintf (file, sizeof (file), PROCDIR "/%s", dent->d_name);
		if ((len < 0) || (len >= BUFSIZE))
			continue;
		
		status = stat (file, &statbuf);
		if (status != 0)
		{
			char errbuf[4096];
			WARNING ("vserver plugin: stat (%s) failed: %s",
					file, sstrerror (errno, errbuf, sizeof (errbuf)));
			continue;
		}
		
		if (!S_ISDIR (statbuf.st_mode))
			continue;

		/* socket message accounting */
		len = ssnprintf (file, sizeof (file),
				PROCDIR "/%s/cacct", dent->d_name);
		if ((len < 0) || ((size_t) len >= sizeof (file)))
			continue;

		if (NULL == (fh = fopen (file, "r")))
		{
			char errbuf[1024];
			ERROR ("Cannot open '%s': %s", file,
					sstrerror (errno, errbuf, sizeof (errbuf)));
		}

		while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
		{
			derive_t rx;
			derive_t tx;
			char *type_instance;

			if (strsplit (buffer, cols, 4) < 4)
				continue;

			if (0 == strcmp (cols[0], "UNIX:"))
				type_instance = "unix";
			else if (0 == strcmp (cols[0], "INET:"))
				type_instance = "inet";
			else if (0 == strcmp (cols[0], "INET6:"))
				type_instance = "inet6";
			else if (0 == strcmp (cols[0], "OTHER:"))
				type_instance = "other";
			else if (0 == strcmp (cols[0], "UNSPEC:"))
				type_instance = "unspec";
			else
				continue;

			rx = vserver_get_sock_bytes (cols[1]);
			tx = vserver_get_sock_bytes (cols[2]);
			/* cols[3] == errors */

			traffic_submit (dent->d_name, type_instance, rx, tx);
		} /* while (fgets) */

		if (fh != NULL)
		{
			fclose (fh);
			fh = NULL;
		}

		/* thread information and load */
		len = ssnprintf (file, sizeof (file),
				PROCDIR "/%s/cvirt", dent->d_name);
		if ((len < 0) || ((size_t) len >= sizeof (file)))
			continue;

		if (NULL == (fh = fopen (file, "r")))
		{
			char errbuf[1024];
			ERROR ("Cannot open '%s': %s", file,
					sstrerror (errno, errbuf, sizeof (errbuf)));
		}

		while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
		{
			int n = strsplit (buffer, cols, 4);

			if (2 == n)
			{
				char   *type_instance;
				gauge_t value;

				if (0 == strcmp (cols[0], "nr_threads:"))
					type_instance = "total";
				else if (0 == strcmp (cols[0], "nr_running:"))
					type_instance = "running";
				else if (0 == strcmp (cols[0], "nr_unintr:"))
					type_instance = "uninterruptable";
				else if (0 == strcmp (cols[0], "nr_onhold:"))
					type_instance = "onhold";
				else
					continue;

				value = atof (cols[1]);
				submit_gauge (dent->d_name, "vs_threads", type_instance, value);
			}
			else if (4 == n) {
				if (0 == strcmp (cols[0], "loadavg:"))
				{
					gauge_t snum = atof (cols[1]);
					gauge_t mnum = atof (cols[2]);
					gauge_t lnum = atof (cols[3]);
					load_submit (dent->d_name, snum, mnum, lnum);
				}
			}
		} /* while (fgets) */

		if (fh != NULL)
		{
			fclose (fh);
			fh = NULL;
		}

		/* processes and memory usage */
		len = ssnprintf (file, sizeof (file),
				PROCDIR "/%s/limit", dent->d_name);
		if ((len < 0) || ((size_t) len >= sizeof (file)))
			continue;

		if (NULL == (fh = fopen (file, "r")))
		{
			char errbuf[1024];
			ERROR ("Cannot open '%s': %s", file,
					sstrerror (errno, errbuf, sizeof (errbuf)));
		}

		while ((fh != NULL) && (NULL != fgets (buffer, BUFSIZE, fh)))
		{
			char *type = "vs_memory";
			char *type_instance;
			gauge_t value;

			if (strsplit (buffer, cols, 2) < 2)
				continue;

			if (0 == strcmp (cols[0], "PROC:"))
			{
				type = "vs_processes";
				type_instance = "";
				value = atof (cols[1]);
			}
			else
			{
				if (0 == strcmp (cols[0], "VM:"))
					type_instance = "vm";
				else if (0 == strcmp (cols[0], "VML:"))
					type_instance = "vml";
				else if (0 == strcmp (cols[0], "RSS:"))
					type_instance = "rss";
				else if (0 == strcmp (cols[0], "ANON:"))
					type_instance = "anon";
				else
					continue;

				value = atof (cols[1]) * pagesize;
			}

			submit_gauge (dent->d_name, type, type_instance, value);
		} /* while (fgets) */

		if (fh != NULL)
		{
			fclose (fh);
			fh = NULL;
		}
	} /* while (readdir) */

	closedir (proc);

	return (0);
} /* int vserver_read */