#include "common.h"
#include "utils_debug.h"
+#ifdef HAVE_MATH_H
+# include <math.h>
+#endif
+
+extern int operating_mode;
+
#ifdef HAVE_LIBKSTAT
extern kstat_ctl_t *kc;
#endif
#ifdef HAVE_LIBRRD
+#if 0
static char *rra_def[] =
{
"RRA:AVERAGE:0.0:1:1500",
NULL
};
static int rra_num = 12;
+#endif
+
+static int rra_timespans[] =
+{
+ 3600,
+ 86400,
+ 604800,
+ 2678400,
+ 31622400,
+ 0
+};
+static int rra_timespans_num = 5;
+
+static char *rra_types[] =
+{
+ "AVERAGE",
+ "MIN",
+ "MAX",
+ NULL
+};
+static int rra_types_num = 3;
#endif /* HAVE_LIBRRD */
void sstrncpy (char *d, const char *s, int len)
return (strlen (dst));
}
+int strsubstitute (char *str, char c_from, char c_to)
+{
+ int ret;
+
+ if (str == NULL)
+ return (-1);
+
+ ret = 0;
+ while (*str != '\0')
+ {
+ if (*str == c_from)
+ {
+ *str = c_to;
+ ret++;
+ }
+ str++;
+ }
+
+ return (ret);
+}
+
int escape_slashes (char *buf, int buf_len)
{
int i;
return (0);
}
-#ifdef HAVE_LIBRRD
-int check_create_dir (const char *file_orig)
+int timeval_sub_timespec (struct timeval *tv0, struct timeval *tv1, struct timespec *ret)
+{
+ if ((tv0 == NULL) || (tv1 == NULL) || (ret == NULL))
+ return (-2);
+
+ if ((tv0->tv_sec < tv1->tv_sec)
+ || ((tv0->tv_sec == tv1->tv_sec) && (tv0->tv_usec < tv1->tv_usec)))
+ return (-1);
+
+ ret->tv_sec = tv0->tv_sec - tv1->tv_sec;
+ ret->tv_nsec = 1000 * ((long) (tv0->tv_usec - tv1->tv_usec));
+
+ if (ret->tv_nsec < 0)
+ {
+ assert (ret->tv_sec > 0);
+
+ ret->tv_nsec += 1000000000;
+ ret->tv_sec -= 1;
+ }
+
+ return (0);
+}
+
+static int check_create_dir (const char *file_orig)
{
struct stat statbuf;
return (0);
}
-int rrd_create_file (char *filename, char **ds_def, int ds_num)
+/* * * * *
+ * Magic *
+ * * * * */
+int rra_get (char ***ret)
+{
+ static char **rra_def = NULL;
+ static int rra_num = 0;
+
+ int rra_max = rra_timespans_num * rra_types_num;
+
+ int step;
+ int rows;
+ int span;
+
+ int cdp_num;
+ int cdp_len;
+ int i, j;
+
+ char buffer[64];
+
+ if ((rra_num != 0) && (rra_def != NULL))
+ {
+ *ret = rra_def;
+ return (rra_num);
+ }
+
+ if ((rra_def = (char **) malloc ((rra_max + 1) * sizeof (char *))) == NULL)
+ return (-1);
+ memset (rra_def, '\0', (rra_max + 1) * sizeof (char *));
+
+ step = atoi (COLLECTD_STEP);
+ rows = atoi (COLLECTD_ROWS);
+
+ if ((step <= 0) || (rows <= 0))
+ {
+ *ret = NULL;
+ return (-1);
+ }
+
+ cdp_len = 0;
+ for (i = 0; i < rra_timespans_num; i++)
+ {
+ span = rra_timespans[i];
+
+ if ((span / step) < rows)
+ continue;
+
+ if (cdp_len == 0)
+ cdp_len = 1;
+ else
+ cdp_len = (int) floor (((double) span) / ((double) (rows * step)));
+
+ cdp_num = (int) ceil (((double) span) / ((double) (cdp_len * step)));
+
+ for (j = 0; j < rra_types_num; j++)
+ {
+ if (rra_num >= rra_max)
+ break;
+
+ if (snprintf (buffer, sizeof(buffer), "RRA:%s:%3.1f:%u:%u",
+ rra_types[j], COLLECTD_XFF,
+ cdp_len, cdp_num) >= sizeof (buffer))
+ {
+ syslog (LOG_ERR, "rra_get: Buffer would have been truncated.");
+ continue;
+ }
+
+ rra_def[rra_num++] = sstrdup (buffer);
+ }
+ }
+
+#if COLLECT_DEBUG
+ DBG ("rra_num = %i", rra_num);
+ for (i = 0; i < rra_num; i++)
+ DBG (" %s", rra_def[i]);
+#endif
+
+ *ret = rra_def;
+ return (rra_num);
+}
+
+static int log_create_file (char *filename, char **ds_def, int ds_num)
+{
+ FILE *log;
+ int i;
+
+ log = fopen (filename, "w");
+ if (log == NULL)
+ {
+ syslog (LOG_WARNING, "Failed to create %s: %s", filename,
+ strerror(errno));
+ return (-1);
+ }
+
+ fprintf (log, "epoch");
+ for (i = 0; i < ds_num; i++)
+ {
+ char *name;
+ char *tmp;
+
+ name = strchr (ds_def[i], ':');
+ if (name == NULL)
+ {
+ syslog (LOG_WARNING, "Invalid DS definition '%s' for %s",
+ ds_def[i], filename);
+ fclose(log);
+ remove(filename);
+ return (-1);
+ }
+
+ name += 1;
+ tmp = strchr (name, ':');
+ if (tmp == NULL)
+ {
+ syslog (LOG_WARNING, "Invalid DS definition '%s' for %s",
+ ds_def[i], filename);
+ fclose(log);
+ remove(filename);
+ return (-1);
+ }
+
+ /* The `%.*s' is needed because there is no null-byte behind
+ * the name. */
+ fprintf(log, ",%.*s", (tmp - name), name);
+ }
+ fprintf(log, "\n");
+ fclose(log);
+
+ return 0;
+}
+
+static int log_update_file (char *host, char *file, char *values,
+ char **ds_def, int ds_num)
+{
+ char *tmp;
+ FILE *fp;
+ struct stat statbuf;
+ char full_file[1024];
+
+ /* Cook the values a bit: Substitute colons with commas */
+ strsubstitute (values, ':', ',');
+
+ /* host == NULL => local mode */
+ if (host != NULL)
+ {
+ if (snprintf (full_file, 1024, "%s/%s", host, file) >= 1024)
+ return (-1);
+ }
+ else
+ {
+ if (snprintf (full_file, 1024, "%s", file) >= 1024)
+ return (-1);
+ }
+
+ strncpy (full_file, file, 1024);
+
+ tmp = full_file + strlen (full_file) - 4;
+ assert (tmp > 0);
+
+ /* Change the filename for logfiles. */
+ if (strncmp (tmp, ".rrd", 4) == 0)
+ {
+ time_t now;
+ struct tm *tm;
+
+ /* TODO: Find a way to minimize the calls to `localtime', since
+ * they are pretty expensive.. */
+ now = time (NULL);
+ tm = localtime (&now);
+
+ strftime (tmp, 1024 - (tmp - full_file), "-%Y-%m-%d", tm);
+
+ /* `localtime(3)' returns a pointer to static data,
+ * therefore the pointer may not be free'd. */
+ }
+ else
+ DBG ("The filename ends with `%s' which is unexpected.", tmp);
+
+ if (stat (full_file, &statbuf) == -1)
+ {
+ if (errno == ENOENT)
+ {
+ if (log_create_file (full_file, ds_def, ds_num))
+ return (-1);
+ }
+ else
+ {
+ syslog (LOG_ERR, "stat %s: %s", full_file, strerror (errno));
+ return (-1);
+ }
+ }
+ else if (!S_ISREG (statbuf.st_mode))
+ {
+ syslog (LOG_ERR, "stat %s: Not a regular file!", full_file);
+ return (-1);
+ }
+
+
+ fp = fopen (full_file, "a");
+ if (fp == NULL)
+ {
+ syslog (LOG_WARNING, "Failed to append to %s: %s", full_file,
+ strerror(errno));
+ return (-1);
+ }
+ fprintf(fp, "%s\n", values);
+ fclose(fp);
+
+ return (0);
+} /* int log_update_file */
+
+#if HAVE_LIBRRD
+static int rrd_create_file (char *filename, char **ds_def, int ds_num)
{
char **argv;
int argc;
+ char **rra_def;
+ int rra_num;
int i, j;
int status = 0;
if (check_create_dir (filename))
return (-1);
+ if ((rra_num = rra_get (&rra_def)) < 1)
+ {
+ syslog (LOG_ERR, "rra_create failed: Could not calculate RRAs");
+ return (-1);
+ }
+
argc = ds_num + rra_num + 4;
if ((argv = (char **) malloc (sizeof (char *) * (argc + 1))) == NULL)
}
free (argv);
-
+
return (status);
}
#endif /* HAVE_LIBRRD */
int rrd_update_file (char *host, char *file, char *values,
char **ds_def, int ds_num)
{
-#ifdef HAVE_LIBRRD
+#if HAVE_LIBRRD
struct stat statbuf;
char full_file[1024];
char *argv[4] = { "update", full_file, values, NULL };
+#endif /* HAVE_LIBRRD */
+ /* I'd rather have a function `common_update_file' to make this
+ * decission, but for that we'd need to touch all plugins.. */
+ if (operating_mode == MODE_LOG)
+ return (log_update_file (host, file, values,
+ ds_def, ds_num));
+
+#if HAVE_LIBRRD
/* host == NULL => local mode */
if (host != NULL)
{
syslog (LOG_WARNING, "rrd_update failed: %s: %s", full_file, rrd_get_error ());
return (-1);
}
-#endif /* HAVE_LIBRRD */
-
return (0);
+/* #endif HAVE_LIBRRD */
+
+#else
+ syslog (LOG_ERR, "`rrd_update_file' was called, but collectd isn't linked against librrd!");
+ return (-1);
+#endif
}
#ifdef HAVE_LIBKSTAT
projects / collectd.git / blobdiff