#include <stdlib.h>
#include <stdio.h>
+#include <stdint.h>
+#include <inttypes.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <unistd.h>
#include <dirent.h>
#include <assert.h>
+#include <math.h>
-#include "common.h"
-
-static int foreach_rrd_file (const char *dir, /* {{{ */
- int (*callback) (const char *, void *),
- void *user_data)
-{
- DIR *dh;
- struct dirent *entry;
- int status;
-
- if (callback == NULL)
- return (EINVAL);
-
- dh = opendir (dir);
- if (dh == NULL)
- return (errno);
-
- while ((entry = readdir (dh)) != NULL)
- {
- struct stat statbuf;
- char abspath[PATH_MAX + 1];
- size_t d_name_len;
-
- if (entry->d_name[0] == '.')
- continue;
+#include <rrd.h>
- d_name_len = strlen (entry->d_name);
- if (d_name_len <= 4)
- continue;
+#include "common.h"
+#include "graph_list.h"
- if (strcasecmp (".rrd", entry->d_name + (d_name_len - 4)) != 0)
- continue;
+#include <fcgiapp.h>
+#include <fcgi_stdio.h>
- snprintf (abspath, sizeof (abspath), "%s/%s", dir, entry->d_name);
- abspath[sizeof (abspath) - 1] = 0;
+size_t c_strlcat (char *dst, const char *src, size_t size) /* {{{ */
+{
+ size_t retval;
+ size_t dst_len;
+ size_t src_len;
- memset (&statbuf, 0, sizeof (statbuf));
+ dst_len = strlen (dst);
+ src_len = strlen (src);
+ retval = dst_len + src_len;
- status = stat (abspath, &statbuf);
- if (status != 0)
- continue;
+ if ((dst_len + 1) >= size)
+ return (retval);
- if (!S_ISREG (statbuf.st_mode))
- continue;
+ dst += dst_len;
+ size -= dst_len;
+ assert (size >= 2);
- entry->d_name[d_name_len - 4] = 0;
+ /* Result will be truncated. */
+ if (src_len >= size)
+ src_len = size - 1;
- status = (*callback) (entry->d_name, user_data);
- if (status != 0)
- break;
- } /* while (readdir) */
+ memcpy (dst, src, src_len);
+ dst[src_len] = 0;
- closedir (dh);
- return (status);
-} /* }}} int foreach_rrd_file */
+ return (retval);
+} /* }}} size_t c_strlcat */
-static int foreach_dir (const char *dir, /* {{{ */
- int (*callback) (const char *, void *),
- void *user_data)
+int ds_list_from_rrd_file (char *file, /* {{{ */
+ size_t *ret_dses_num, char ***ret_dses)
{
- DIR *dh;
- struct dirent *entry;
- int status;
+ char *rrd_argv[] = { "info", file, NULL };
+ int rrd_argc = (sizeof (rrd_argv) / sizeof (rrd_argv[0])) - 1;
+
+ rrd_info_t *info;
+ rrd_info_t *ptr;
- if (callback == NULL)
- return (EINVAL);
+ char **dses = NULL;
+ size_t dses_num = 0;
- dh = opendir (dir);
- if (dh == NULL)
- return (errno);
+ info = rrd_info (rrd_argc, rrd_argv);
+ if (info == NULL)
+ {
+ printf ("%s: rrd_info (%s) failed.\n", __func__, file);
+ return (-1);
+ }
- while ((entry = readdir (dh)) != NULL)
+ for (ptr = info; ptr != NULL; ptr = ptr->next)
{
- struct stat statbuf;
- char abspath[PATH_MAX + 1];
+ size_t keylen;
+ size_t dslen;
+ char *ds;
+ char **tmp;
- if (entry->d_name[0] == '.')
+ if (strncmp ("ds[", ptr->key, strlen ("ds[")) != 0)
continue;
- snprintf (abspath, sizeof (abspath), "%s/%s", dir, entry->d_name);
- abspath[sizeof (abspath) - 1] = 0;
+ keylen = strlen (ptr->key);
+ if (keylen < strlen ("ds[?].index"))
+ continue;
- memset (&statbuf, 0, sizeof (statbuf));
+ dslen = keylen - strlen ("ds[].index");
+ assert (dslen >= 1);
- status = stat (abspath, &statbuf);
- if (status != 0)
+ if (strcmp ("].index", ptr->key + (strlen ("ds[") + dslen)) != 0)
continue;
- if (!S_ISDIR (statbuf.st_mode))
+ ds = malloc (dslen + 1);
+ if (ds == NULL)
continue;
- status = (*callback) (entry->d_name, user_data);
- if (status != 0)
- break;
- } /* while (readdir) */
+ memcpy (ds, ptr->key + strlen ("ds["), dslen);
+ ds[dslen] = 0;
- closedir (dh);
- return (status);
-} /* }}} int foreach_dir */
-
-int foreach_type (const char *host, const char *plugin, /* {{{ */
- callback_type_t callback, void *user_data)
-{
- char abspath[PATH_MAX + 1];
+ tmp = realloc (dses, sizeof (*dses) * (dses_num + 1));
+ if (tmp == NULL)
+ {
+ free (ds);
+ continue;
+ }
+ dses = tmp;
- if ((host == NULL) || (plugin == NULL))
- return (EINVAL);
+ dses[dses_num] = ds;
+ dses_num++;
+ }
- snprintf (abspath, sizeof (abspath), "%s/%s/%s", DATA_DIR, host, plugin);
- abspath[sizeof (abspath) - 1] = 0;
+ rrd_info_free (info);
- return (foreach_rrd_file (abspath, callback, user_data));
-} /* }}} int foreach_type */
+ if (dses_num < 1)
+ {
+ assert (dses == NULL);
+ return (ENOENT);
+ }
-int foreach_plugin (const char *host, /* {{{ */
- callback_plugin_t callback,
- void *user_data)
-{
- char abspath[PATH_MAX + 1];
+ *ret_dses_num = dses_num;
+ *ret_dses = dses;
- if (host == NULL)
- return (EINVAL);
+ return (0);
+} /* }}} int ds_list_from_rrd_file */
- snprintf (abspath, sizeof (abspath), "%s/%s", DATA_DIR, host);
- abspath[sizeof (abspath) - 1] = 0;
+static int hsv_to_rgb (double *hsv, double *rgb) /* {{{ */
+{
+ double c = hsv[2] * hsv[1];
+ double h = hsv[0] / 60.0;
+ double x = c * (1.0 - fabs (fmod (h, 2.0) - 1));
+ double m = hsv[2] - c;
+
+ rgb[0] = 0.0;
+ rgb[1] = 0.0;
+ rgb[2] = 0.0;
+
+ if ((0.0 <= h) && (h < 1.0)) { rgb[0] = 1.0; rgb[1] = x; rgb[2] = 0.0; }
+ else if ((1.0 <= h) && (h < 2.0)) { rgb[0] = x; rgb[1] = 1.0; rgb[2] = 0.0; }
+ else if ((2.0 <= h) && (h < 3.0)) { rgb[0] = 0.0; rgb[1] = 1.0; rgb[2] = x; }
+ else if ((3.0 <= h) && (h < 4.0)) { rgb[0] = 0.0; rgb[1] = x; rgb[2] = 1.0; }
+ else if ((4.0 <= h) && (h < 5.0)) { rgb[0] = x; rgb[1] = 0.0; rgb[2] = 1.0; }
+ else if ((5.0 <= h) && (h < 6.0)) { rgb[0] = 1.0; rgb[1] = 0.0; rgb[2] = x; }
+
+ rgb[0] += m;
+ rgb[1] += m;
+ rgb[2] += m;
+
+ return (0);
+} /* }}} int hsv_to_rgb */
+
+static uint32_t rgb_to_uint32 (double *rgb) /* {{{ */
+{
+ uint8_t r;
+ uint8_t g;
+ uint8_t b;
- return (foreach_dir (abspath, callback, user_data));
-} /* }}} int foreach_plugin */
+ r = (uint8_t) (255.0 * rgb[0]);
+ g = (uint8_t) (255.0 * rgb[1]);
+ b = (uint8_t) (255.0 * rgb[2]);
-int foreach_host (callback_host_t callback, /* {{{ */
- void *user_data)
-{
- return (foreach_dir (DATA_DIR, callback, user_data));
-} /* }}} int foreach_host */
+ return ((((uint32_t) r) << 16)
+ | (((uint32_t) g) << 8)
+ | ((uint32_t) b));
+} /* }}} uint32_t rgb_to_uint32 */
-size_t c_strlcat (char *dst, const char *src, size_t size) /* {{{ */
+uint32_t get_random_color (void) /* {{{ */
{
- size_t retval;
- size_t dst_len;
- size_t src_len;
+ double hsv[3] = { 0.0, 1.0, 1.0 };
+ double rgb[3] = { 0.0, 0.0, 0.0 };
- dst_len = strlen (dst);
- src_len = strlen (src);
- retval = dst_len + src_len;
+ hsv[0] = 360.0 * ((double) rand ()) / (((double) RAND_MAX) + 1.0);
- if ((dst_len + 1) >= size)
- return (retval);
+ hsv_to_rgb (hsv, rgb);
- dst += dst_len;
- size -= dst_len;
- assert (size >= 2);
+ return (rgb_to_uint32 (rgb));
+} /* }}} uint32_t get_random_color */
- /* Result will be truncated. */
- if (src_len >= size)
- src_len = size - 1;
+int print_debug (const char *format, ...) /* {{{ */
+{
+ static _Bool have_header = 0;
- memcpy (dst, src, src_len);
- dst[src_len] = 0;
+ va_list ap;
+ int status;
- return (retval);
-} /* }}} size_t c_strlcat */
+ if (!have_header)
+ {
+ printf ("Content-Type: text/plain\n\n");
+ have_header = 1;
+ }
+ va_start (ap, format);
+ status = vprintf (format, ap);
+ va_end (ap);
+ return (status);
+} /* }}} int print_debug */
/* vim: set sw=2 sts=2 et fdm=marker : */
projects / collection4.git / blobdiff