#include <fcgiapp.h>
#include <fcgi_stdio.h>
-struct data_source_s
-{
- char *file;
- char *name;
- char *legend;
- double scale;
- _Bool nan_to_zero;
- _Bool draw_area;
- uint32_t color;
-};
-typedef struct data_source_s data_source_t;
-
-struct graph_def_s
-{
- data_source_t *data_sources;
- size_t data_sources_num;
-
- _Bool stack;
-
- int def_num;
-};
-typedef struct graph_def_s graph_def_t;
-
-static void graph_def_free (graph_def_t *gd) /* {{{ */
-{
- size_t i;
-
- if (gd == NULL)
- return;
-
- for (i = 0; i < gd->data_sources_num; i++)
- {
- free (gd->data_sources[i].file);
- free (gd->data_sources[i].name);
- free (gd->data_sources[i].legend);
- }
- free (gd->data_sources);
- free (gd);
-} /* }}} void graph_def_free */
-
-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;
-
- r = (uint8_t) (255.0 * rgb[0]);
- g = (uint8_t) (255.0 * rgb[1]);
- b = (uint8_t) (255.0 * rgb[2]);
-
- return ((((uint32_t) r) << 16)
- | (((uint32_t) g) << 8)
- | ((uint32_t) b));
-} /* }}} uint32_t rgb_to_uint32 */
-
-static uint32_t get_random_color (void) /* {{{ */
-{
- double hsv[3] = { 0.0, 1.0, 1.0 };
- double rgb[3] = { 0.0, 0.0, 0.0 };
-
- hsv[0] = 360.0 * ((double) rand ()) / (((double) RAND_MAX) + 1.0);
-
- hsv_to_rgb (hsv, rgb);
-
- return (rgb_to_uint32 (rgb));
-} /* }}} uint32_t get_random_color */
-
-static int graph_def_add_ds (graph_def_t *gd, /* {{{ */
- const char *file,
- const char *in_ds_name, size_t ds_name_len)
-{
- char ds_name[ds_name_len + 1];
- data_source_t *ds;
-
- strncpy (ds_name, in_ds_name, sizeof (ds_name));
- ds_name[sizeof (ds_name) - 1] = 0;
-
- ds = realloc (gd->data_sources, sizeof (*ds) * (gd->data_sources_num + 1));
- if (ds == NULL)
- return (ENOMEM);
- gd->data_sources = ds;
-
- ds = gd->data_sources + gd->data_sources_num;
- memset (ds, 0, sizeof (*ds));
-
- ds->file = strdup (file);
- if (ds->file == NULL)
- return (ENOMEM);
-
- ds->name = strdup (ds_name);
- if (ds->name == NULL)
- {
- free (ds->file);
- return (ENOMEM);
- }
-
- ds->legend = NULL;
- ds->color = get_random_color ();
-
- gd->data_sources_num++;
-
- return (0);
-} /* }}} int graph_def_add_ds */
-
-static graph_def_t *graph_def_from_rrd_file (char *file) /* {{{ */
-{
- 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;
- graph_def_t *gd;
-
- gd = malloc (sizeof (*gd));
- if (gd == NULL)
- return (NULL);
- memset (gd, 0, sizeof (*gd));
-
- gd->data_sources = NULL;
-
- info = rrd_info (rrd_argc, rrd_argv);
- if (info == NULL)
- {
- printf ("%s: rrd_info (%s) failed.\n", __func__, file);
- free (gd);
- return (NULL);
- }
-
- for (ptr = info; ptr != NULL; ptr = ptr->next)
- {
- size_t keylen;
- size_t dslen;
-
- if (strncmp ("ds[", ptr->key, strlen ("ds[")) != 0)
- continue;
-
- keylen = strlen (ptr->key);
- if (keylen < strlen ("ds[?].index"))
- continue;
-
- dslen = keylen - strlen ("ds[].index");
- assert (dslen >= 1);
-
- if (strcmp ("].index", ptr->key + (strlen ("ds[") + dslen)) != 0)
- continue;
-
- graph_def_add_ds (gd, file, ptr->key + strlen ("ds["), dslen);
- }
-
- rrd_info_free (info);
-
- return (gd);
-} /* }}} graph_def_t *graph_def_from_rrd_file */
-
-static graph_def_t *graph_def_from_gl (const graph_list_t *gl) /* {{{ */
-{
- char rrd_file[PATH_MAX];
-
- if ((gl->plugin_instance == NULL) && (gl->type_instance == NULL))
- snprintf (rrd_file, sizeof (rrd_file), "%s/%s/%s/%s.rrd",
- DATA_DIR, gl->host, gl->plugin, gl->type);
- else if (gl->type_instance == NULL)
- snprintf (rrd_file, sizeof (rrd_file), "%s/%s/%s-%s/%s.rrd",
- DATA_DIR, gl->host, gl->plugin, gl->plugin_instance, gl->type);
- else if (gl->plugin_instance == NULL)
- snprintf (rrd_file, sizeof (rrd_file), "%s/%s/%s/%s-%s.rrd",
- DATA_DIR, gl->host, gl->plugin, gl->type, gl->type_instance);
- else
- snprintf (rrd_file, sizeof (rrd_file), "%s/%s/%s-%s/%s-%s.rrd",
- DATA_DIR, gl->host, gl->plugin, gl->plugin_instance,
- gl->type, gl->type_instance);
- rrd_file[sizeof (rrd_file) - 1] = 0;
-
- return (graph_def_from_rrd_file (rrd_file));
-} /* }}} graph_def_t *graph_def_from_gl */
-
-static int draw_graph_ds (graph_def_t *gd, /* {{{ */
- size_t index, str_array_t *args)
-{
- data_source_t *ds;
-
- assert (index < gd->data_sources_num);
-
- ds = gd->data_sources + index;
-
- /* CDEFs */
- array_append_format (args, "DEF:def_%04zu_min=%s:%s:MIN",
- index, ds->file, ds->name);
- array_append_format (args, "DEF:def_%04zu_avg=%s:%s:AVERAGE",
- index, ds->file, ds->name);
- array_append_format (args, "DEF:def_%04zu_max=%s:%s:MAX",
- index, ds->file, ds->name);
- /* VDEFs */
- array_append_format (args, "VDEF:vdef_%04zu_min=def_%04zu_min,MINIMUM",
- index, index);
- array_append_format (args, "VDEF:vdef_%04zu_avg=def_%04zu_avg,AVERAGE",
- index, index);
- array_append_format (args, "VDEF:vdef_%04zu_max=def_%04zu_max,MAXIMUM",
- index, index);
- array_append_format (args, "VDEF:vdef_%04zu_lst=def_%04zu_avg,LAST",
- index, index);
-
- /* Graph part */
- array_append_format (args, "LINE1:def_%04zu_avg#%06x:%s", index, ds->color,
- (ds->legend != NULL) ? ds->legend : ds->name);
- array_append_format (args, "GPRINT:vdef_%04zu_min:%%lg min,", index);
- array_append_format (args, "GPRINT:vdef_%04zu_avg:%%lg avg,", index);
- array_append_format (args, "GPRINT:vdef_%04zu_max:%%lg max,", index);
- array_append_format (args, "GPRINT:vdef_%04zu_lst:%%lg last\\l", index);
-
- return (0);
-} /* }}} int draw_graph_ds */
-
static void emulate_graph (int argc, char **argv) /* {{{ */
{
int i;
}
} /* }}} void emulate_graph */
-static int ag_info_print (rrd_info_t *info)
+static int ag_info_print (rrd_info_t *info) /* {{{ */
{
if (info->type == RD_I_VAL)
printf ("[info] %s = %g;\n", info->key, info->value.u_val);
return (0);
} /* }}} int ag_info_print */
-static int output_graph (rrd_info_t *info)
+static int output_graph (rrd_info_t *info) /* {{{ */
{
rrd_info_t *img;
return (0);
} /* }}} int output_graph */
-static int draw_graph (graph_def_t *gd) /* {{{ */
+#define OUTPUT_ERROR(...) do { \
+ printf ("Content-Type: text/plain\n\n"); \
+ printf (__VA_ARGS__); \
+ return (0); \
+} while (0)
+
+int action_graph (void) /* {{{ */
{
str_array_t *args;
+ graph_config_t *cfg;
+ graph_instance_t *inst;
rrd_info_t *info;
- size_t i;
+ int status;
+
+ cfg = gl_graph_get_selected ();
+ if (cfg == NULL)
+ OUTPUT_ERROR ("gl_graph_get_selected () failed.\n");
+
+ inst = inst_get_selected (cfg);
+ if (inst == NULL)
+ OUTPUT_ERROR ("inst_get_selected (%p) failed.\n", (void *) cfg);
args = array_create ();
if (args == NULL)
array_append (args, "--imgformat");
array_append (args, "PNG");
- for (i = 0; i < gd->data_sources_num; i++)
- draw_graph_ds (gd, i, args);
+ status = inst_get_rrdargs (cfg, inst, args);
+ if (status != 0)
+ {
+ array_destroy (args);
+ OUTPUT_ERROR ("inst_get_rrdargs failed with status %i.\n", status);
+ }
rrd_clear_error ();
info = rrd_graph_v (array_argc (args), array_argv (args));
rrd_info_free (info);
array_destroy (args);
-
- return (0);
-} /* }}} int draw_graph */
-
-static int init_gl (graph_list_t *gl) /* {{{ */
-{
- gl->host = param ("host");
- gl->plugin = param ("plugin");
- gl->plugin_instance = param ("plugin_instance");
- gl->type = param ("type");
- gl->type_instance = param ("type_instance");
-
- if ((gl->host == NULL)
- || (gl->plugin == NULL)
- || (gl->type == NULL))
- return (EINVAL);
-
- if ((gl->host[0] == 0) || (gl->host[0] == '.')
- || (gl->plugin[0] == 0) || (gl->plugin[0] == '.')
- || (gl->type[0] == 0) || (gl->type[0] == '.'))
- return (EINVAL);
-
- if ((strchr (gl->plugin, '-') != NULL)
- || (strchr (gl->type, '-') != NULL))
- return (EINVAL);
-
- if ((gl->plugin_instance != NULL)
- && (gl->plugin_instance[0] == 0))
- gl->plugin_instance = NULL;
-
- if ((gl->type_instance != NULL)
- && (gl->type_instance[0] == 0))
- gl->type_instance = NULL;
-
- return (0);
-} /* }}} int init_gl */
-
-int action_graph (void) /* {{{ */
-{
- graph_list_t gl;
- graph_def_t *gd;
- int status;
-
- memset (&gl, 0, sizeof (gl));
- status = init_gl (&gl);
- if (status != 0)
- {
- printf ("Content-Type: text/plain\n\n"
- "init_gl failed with status %i.\n", status);
- return (status);
- }
-
- gd = graph_def_from_gl (&gl);
- if (gd == NULL)
- {
- printf ("graph_def_from_gl failed.\n");
- return (0);
- }
-
- draw_graph (gd);
- graph_def_free (gd);
+ args = NULL;
return (0);
} /* }}} int action_graph */
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