#include <stdlib.h>
#include <stdio.h>
+#include <stdint.h>
+#include <inttypes.h>
#include <string.h>
#include <time.h>
#include <errno.h>
#include <assert.h>
#include "graph_list.h"
+#include "graph_ident.h"
+#include "graph_def.h"
+#include "graph_config.h"
#include "common.h"
+#include "filesystem.h"
+#include "utils_params.h"
+#include <fcgiapp.h>
+#include <fcgi_stdio.h>
+
+/*
+ * Defines
+ */
#define UPDATE_INTERVAL 10
-static graph_list_t *graph_list = NULL;
-static size_t graph_list_length = 0;
+#define ANY_TOKEN "/any/"
+#define ALL_TOKEN "/all/"
+
+/*
+ * Data types
+ */
+struct gl_ident_stage_s /* {{{ */
+{
+ char *host;
+ char *plugin;
+ char *plugin_instance;
+ char *type;
+ char *type_instance;
+}; /* }}} */
+typedef struct gl_ident_stage_s gl_ident_stage_t;
+
+struct graph_config_s /* {{{ */
+{
+ graph_ident_t *select;
+
+ char *title;
+ char *vertical_label;
+
+ graph_def_t *defs;
+
+ graph_instance_t *instances;
+
+ graph_config_t *next;
+}; /* }}} struct graph_config_s */
+
+/*
+ * Global variables
+ */
+static graph_config_t *graph_config_head = NULL;
+static graph_config_t *graph_config_staging = NULL;
+
static time_t gl_last_update = 0;
+/*
+ * Private functions
+ */
+#if 0
/* "Safe" version of strcmp(3): Either or both pointers may be NULL. */
static int strcmp_s (const char *s1, const char *s2) /* {{{ */
{
return (strcmp (s1, s2));
} /* }}} int strcmp_s */
+#endif
-static int gl_compare (const void *p0, const void *p1) /* {{{ */
-{
- const graph_list_t *gl0 = p0;
- const graph_list_t *gl1 = p1;
- int status;
+/*
+ * Copy part of an identifier. If the "template" value is ANY_TOKEN, "value" is
+ * copied and returned. This function is used when creating graph_instance_t
+ * from graph_config_t.
+ */
- status = strcmp (gl0->host, gl1->host);
- if (status != 0)
- return (status);
+static graph_instance_t *graph_find_instance (graph_config_t *cfg, /* {{{ */
+ const graph_ident_t *ident)
+{
+ if ((cfg == NULL) || (ident == NULL))
+ return (NULL);
- status = strcmp (gl0->plugin, gl1->plugin);
- if (status != 0)
- return (status);
+ return (inst_find_matching (cfg->instances, ident));
+} /* }}} graph_instance_t *graph_find_instance */
- status = strcmp_s (gl0->plugin_instance, gl1->plugin_instance);
- if (status != 0)
- return (status);
+static int graph_add_file (graph_config_t *cfg, const graph_ident_t *file) /* {{{ */
+{
+ graph_instance_t *inst;
- status = strcmp (gl0->type, gl1->type);
- if (status != 0)
- return (status);
+ inst = graph_find_instance (cfg, file);
+ if (inst == NULL)
+ {
+ inst = inst_create (cfg, file);
+ if (inst == NULL)
+ return (ENOMEM);
+
+ if (cfg->instances == NULL)
+ cfg->instances = inst;
+ else
+ inst_append (cfg->instances, inst);
+ }
- return (strcmp_s (gl0->type_instance, gl1->type_instance));
-} /* }}} int gl_compare */
+ return (inst_add_file (inst, file));
+} /* }}} int graph_add_file */
-static void gl_clear_entry (graph_list_t *gl) /* {{{ */
+static int graph_append (graph_config_t **head, /* {{{ */
+ graph_config_t *cfg)
{
- if (gl == NULL)
- return;
+ graph_config_t *last;
- free (gl->host);
- free (gl->plugin);
- free (gl->plugin_instance);
- free (gl->type);
- free (gl->type_instance);
+ if (cfg == NULL)
+ return (EINVAL);
+
+ if (head == NULL)
+ head = &graph_config_head;
- gl->host = NULL;
- gl->plugin = NULL;
- gl->plugin_instance = NULL;
- gl->type = NULL;
- gl->type_instance = NULL;
-} /* }}} void gl_clear_entry */
+ if (*head == NULL)
+ {
+ *head = cfg;
+ return (0);
+ }
+
+ last = *head;
+ while (last->next != NULL)
+ last = last->next;
+
+ last->next = cfg;
+
+ return (0);
+} /* }}} int graph_append */
-static void gl_clear (void) /* {{{ */
+static graph_config_t *graph_create (const graph_ident_t *selector) /* {{{ */
{
- size_t i;
+ graph_config_t *cfg;
- for (i = 0; i < graph_list_length; i++)
- gl_clear_entry (graph_list + i);
+ cfg = malloc (sizeof (*cfg));
+ if (cfg == NULL)
+ return (NULL);
+ memset (cfg, 0, sizeof (*cfg));
- free (graph_list);
- graph_list = NULL;
- graph_list_length = 0;
- gl_last_update = 0;
-} /* }}} void gl_clear */
+ if (selector != NULL)
+ cfg->select = ident_clone (selector);
+ else
+ cfg->select = NULL;
-static int gl_add_copy (graph_list_t *gl) /* {{{ */
+ cfg->title = NULL;
+ cfg->vertical_label = NULL;
+ cfg->defs = NULL;
+ cfg->instances = NULL;
+ cfg->next = NULL;
+
+ return (cfg);
+} /* }}} int graph_create */
+
+static void graph_destroy (graph_config_t *cfg) /* {{{ */
{
- graph_list_t *ptr;
- int status;
+ graph_config_t *next;
- if (gl == NULL)
- return (EINVAL);
+ if (cfg == NULL)
+ return;
- ptr = realloc (graph_list, sizeof (*graph_list) * (graph_list_length + 1));
- if (ptr == NULL)
- return (ENOMEM);
- graph_list = ptr;
-
- ptr = graph_list + graph_list_length;
- memset (ptr, 0, sizeof (*ptr));
- ptr->host = NULL;
- ptr->plugin = NULL;
- ptr->plugin_instance = NULL;
- ptr->type = NULL;
- ptr->type_instance = NULL;
-
-#define DUP_OR_BREAK(member) do { \
- ptr->member = NULL; \
- if (gl->member != NULL) \
- { \
- ptr->member = strdup (gl->member); \
- if (ptr->member == NULL) \
- break; \
- } \
-} while (0)
-
- status = ENOMEM;
- do
+ next = cfg->next;
+
+ ident_destroy (cfg->select);
+
+ free (cfg->title);
+ free (cfg->vertical_label);
+
+ def_destroy (cfg->defs);
+ inst_destroy (cfg->instances);
+
+ graph_destroy (next);
+} /* }}} void graph_destroy */
+
+static int gl_register_file (const graph_ident_t *file, /* {{{ */
+ __attribute__((unused)) void *user_data)
+{
+ graph_config_t *cfg;
+ int num_graphs = 0;
+
+ for (cfg = graph_config_head; cfg != NULL; cfg = cfg->next)
{
- DUP_OR_BREAK(host);
- DUP_OR_BREAK(plugin);
- DUP_OR_BREAK(plugin_instance);
- DUP_OR_BREAK(type);
- DUP_OR_BREAK(type_instance);
+ int status;
- status = 0;
- } while (0);
+ if (!ident_matches (cfg->select, file))
+ continue;
-#undef DUP_OR_BREAK
+ status = graph_add_file (cfg, file);
+ if (status != 0)
+ {
+ /* report error */;
+ }
+ else
+ {
+ num_graphs++;
+ }
+ }
- if (status != 0)
+ if (num_graphs == 0)
{
- free (ptr->host);
- free (ptr->plugin);
- free (ptr->plugin_instance);
- free (ptr->type);
- free (ptr->type_instance);
- return (status);
+ cfg = graph_create (file);
+ graph_append (/* head = */ NULL, cfg);
+ graph_add_file (cfg, file);
}
- graph_list_length++;
return (0);
-} /* }}} int gl_add_copy */
+} /* }}} int gl_register_file */
-static int callback_type (const char *type, void *user_data) /* {{{ */
+static const char *get_part_from_param (const char *prim_key, /* {{{ */
+ const char *sec_key)
{
- graph_list_t *gl;
- int status;
+ const char *val;
- if ((type == NULL) || (user_data == NULL))
- return (EINVAL);
+ val = param (prim_key);
+ if (val != NULL)
+ return (val);
+
+ return (param (sec_key));
+} /* }}} const char *get_part_from_param */
+
+static int gl_clear_instances (void) /* {{{ */
+{
+ graph_config_t *cfg;
+
+ for (cfg = graph_config_head; cfg != NULL; cfg = cfg->next)
+ {
+ inst_destroy (cfg->instances);
+ cfg->instances = NULL;
+ }
+
+ return (0);
+} /* }}} int gl_clear_instances */
- gl = user_data;
- if ((gl->type != NULL) || (gl->type_instance != NULL))
+
+/*
+ * Config functions
+ */
+static graph_ident_t *graph_config_get_selector (const oconfig_item_t *ci) /* {{{ */
+{
+ char *host = NULL;
+ char *plugin = NULL;
+ char *plugin_instance = NULL;
+ char *type = NULL;
+ char *type_instance = NULL;
+ graph_ident_t *ret;
+ int i;
+
+ for (i = 0; i < ci->children_num; i++)
+ {
+ oconfig_item_t *child;
+
+ child = ci->children + i;
+
+ if (strcasecmp ("Host", child->key) == 0)
+ graph_config_get_string (child, &host);
+ else if (strcasecmp ("Plugin", child->key) == 0)
+ graph_config_get_string (child, &plugin);
+ else if (strcasecmp ("PluginInstance", child->key) == 0)
+ graph_config_get_string (child, &plugin_instance);
+ else if (strcasecmp ("Type", child->key) == 0)
+ graph_config_get_string (child, &type);
+ else if (strcasecmp ("TypeInstance", child->key) == 0)
+ graph_config_get_string (child, &type_instance);
+ /* else: ignore all other directives here. */
+ } /* for */
+
+ ret = ident_create (host, plugin, plugin_instance, type, type_instance);
+
+ free (host);
+ free (plugin);
+ free (plugin_instance);
+ free (type);
+ free (type_instance);
+
+ return (ret);
+} /* }}} int graph_config_get_selector */
+
+/*
+ * Global functions
+ */
+int graph_config_add (const oconfig_item_t *ci) /* {{{ */
+{
+ graph_ident_t *select;
+ graph_config_t *cfg = NULL;
+ int i;
+
+ select = graph_config_get_selector (ci);
+ if (select == NULL)
return (EINVAL);
- gl->type = strdup (type);
- if (gl->type == NULL)
+ cfg = graph_create (/* selector = */ NULL);
+ if (cfg == NULL)
return (ENOMEM);
- gl->type_instance = strchr (gl->type, '-');
- if (gl->type_instance != NULL)
+ cfg->select = select;
+
+ for (i = 0; i < ci->children_num; i++)
{
- *gl->type_instance = 0;
- gl->type_instance++;
- }
+ oconfig_item_t *child;
- status = gl_add_copy (gl);
+ child = ci->children + i;
- free (gl->type);
- gl->type = NULL;
- gl->type_instance = NULL;
+ if (strcasecmp ("Title", child->key) == 0)
+ graph_config_get_string (child, &cfg->title);
+ else if (strcasecmp ("VerticalLabel", child->key) == 0)
+ graph_config_get_string (child, &cfg->vertical_label);
+ else if (strcasecmp ("DEF", child->key) == 0)
+ def_config (cfg, child);
+ } /* for */
- return (status);
-} /* }}} int callback_type */
+ graph_append (&graph_config_staging, cfg);
-static int callback_plugin (const char *plugin, void *user_data) /* {{{ */
+ return (0);
+} /* }}} graph_config_add */
+
+int graph_config_submit (void) /* {{{ */
{
- graph_list_t *gl;
- int status;
+ graph_config_t *tmp;
- if ((plugin == NULL) || (user_data == NULL))
- return (EINVAL);
+ tmp = graph_config_head;
+ graph_config_head = graph_config_staging;
+ graph_config_staging = NULL;
+
+ graph_destroy (tmp);
+
+ return (0);
+} /* }}} int graph_config_submit */
+
+int gl_graph_get_all (gl_cfg_callback callback, /* {{{ */
+ void *user_data)
+{
+ graph_config_t *cfg;
- gl = user_data;
- if ((gl->plugin != NULL) || (gl->plugin_instance != NULL))
+ if (callback == NULL)
return (EINVAL);
- gl->plugin = strdup (plugin);
- if (gl->plugin == NULL)
- return (ENOMEM);
+ gl_update ();
- gl->plugin_instance = strchr (gl->plugin, '-');
- if (gl->plugin_instance != NULL)
+ for (cfg = graph_config_head; cfg != NULL; cfg = cfg->next)
{
- *gl->plugin_instance = 0;
- gl->plugin_instance++;
+ int status;
+
+ status = (*callback) (cfg, user_data);
+ if (status != 0)
+ return (status);
}
- status = foreach_type (gl->host, plugin, callback_type, gl);
+ return (0);
+} /* }}} int gl_graph_get_all */
+
+graph_config_t *graph_get_selected (void) /* {{{ */
+{
+ const char *host = get_part_from_param ("graph_host", "host");
+ const char *plugin = get_part_from_param ("graph_plugin", "plugin");
+ const char *plugin_instance = get_part_from_param ("graph_plugin_instance", "plugin_instance");
+ const char *type = get_part_from_param ("graph_type", "type");
+ const char *type_instance = get_part_from_param ("graph_type_instance", "type_instance");
+ graph_ident_t *ident;
+ graph_config_t *cfg;
- free (gl->plugin);
- gl->plugin = NULL;
- gl->plugin_instance = NULL;
+ if ((host == NULL)
+ || (plugin == NULL) || (plugin_instance == NULL)
+ || (type == NULL) || (type_instance == NULL))
+ return (NULL);
- return (status);
-} /* }}} int callback_plugin */
+ ident = ident_create (host, plugin, plugin_instance, type, type_instance);
-static int callback_host (const char *host, void *user_data) /* {{{ */
+ gl_update ();
+
+ for (cfg = graph_config_head; cfg != NULL; cfg = cfg->next)
+ {
+ if (ident_compare (ident, cfg->select) != 0)
+ continue;
+
+ ident_destroy (ident);
+ return (cfg);
+ }
+
+ ident_destroy (ident);
+ return (NULL);
+} /* }}} graph_config_t *graph_get_selected */
+
+/* gl_instance_get_all, gl_graph_instance_get_all {{{ */
+struct gl_inst_callback_data /* {{{ */
{
- graph_list_t *gl;
- int status;
+ graph_config_t *cfg;
+ gl_inst_callback callback;
+ void *user_data;
+}; /* }}} struct gl_inst_callback_data */
+
+static int gl_inst_callback_handler (graph_instance_t *inst, /* {{{ */
+ void *user_data)
+{
+ struct gl_inst_callback_data *data = user_data;
+
+ return ((*data->callback) (data->cfg, inst, data->user_data));
+} /* }}} int gl_inst_callback_handler */
+
+int gl_graph_instance_get_all (graph_config_t *cfg, /* {{{ */
+ gl_inst_callback callback, void *user_data)
+{
+ struct gl_inst_callback_data data =
+ {
+ cfg,
+ callback,
+ user_data
+ };
- if ((host == NULL) || (user_data == NULL))
+ if ((cfg == NULL) || (callback == NULL))
return (EINVAL);
- gl = user_data;
- if (gl->host != NULL)
+ return (inst_foreach (cfg->instances, gl_inst_callback_handler, &data));
+} /* }}} int gl_graph_instance_get_all */
+
+int gl_instance_get_all (gl_inst_callback callback, /* {{{ */
+ void *user_data)
+{
+ graph_config_t *cfg;
+
+ gl_update ();
+
+ for (cfg = graph_config_head; cfg != NULL; cfg = cfg->next)
+ {
+ int status;
+
+ status = gl_graph_instance_get_all (cfg, callback, user_data);
+ if (status != 0)
+ return (status);
+ }
+
+ return (0);
+} /* }}} int gl_instance_get_all */
+/* }}} gl_instance_get_all, gl_graph_instance_get_all */
+
+int gl_graph_get_title (graph_config_t *cfg, /* {{{ */
+ char *buffer, size_t buffer_size)
+{
+ if ((cfg == NULL) || (buffer == NULL) || (buffer_size < 1))
return (EINVAL);
- gl->host = strdup (host);
- if (gl->host == NULL)
+ if (cfg->title == NULL)
+ cfg->title = ident_to_string (cfg->select);
+
+ if (cfg->title == NULL)
return (ENOMEM);
- status = foreach_plugin (host, callback_plugin, gl);
+ strncpy (buffer, cfg->title, buffer_size);
+ buffer[buffer_size - 1] = 0;
- free (gl->host);
- gl->host = NULL;
+ return (0);
+} /* }}} int gl_graph_get_title */
- return (status);
-} /* }}} int callback_host */
+graph_ident_t *gl_graph_get_selector (graph_config_t *cfg) /* {{{ */
+{
+ if (cfg == NULL)
+ return (NULL);
+
+ return (ident_clone (cfg->select));
+} /* }}} graph_ident_t *gl_graph_get_selector */
+
+graph_instance_t *gl_graph_get_instances (graph_config_t *cfg) /* {{{ */
+{
+ if (cfg == NULL)
+ return (NULL);
+
+ return (cfg->instances);
+} /* }}} graph_instance_t *gl_graph_get_instances */
+
+graph_def_t *gl_graph_get_defs (graph_config_t *cfg) /* {{{ */
+{
+ if (cfg == NULL)
+ return (NULL);
+
+ return (cfg->defs);
+} /* }}} graph_def_t *gl_graph_get_defs */
+
+int gl_graph_add_def (graph_config_t *cfg, graph_def_t *def) /* {{{ */
+{
+ if ((cfg == NULL) || (def == NULL))
+ return (EINVAL);
+
+ if (cfg->defs == NULL)
+ {
+ cfg->defs = def;
+ return (0);
+ }
+
+ return (def_append (cfg->defs, def));
+} /* }}} int gl_graph_add_def */
int gl_update (void) /* {{{ */
{
time_t now;
- graph_list_t gl;
+ gl_ident_stage_t gl;
int status;
+ /*
+ printf ("Content-Type: text/plain\n\n");
+ */
+
now = time (NULL);
if ((gl_last_update + UPDATE_INTERVAL) >= now)
return (0);
- gl_clear ();
+ graph_read_config ();
memset (&gl, 0, sizeof (gl));
gl.host = NULL;
gl.type = NULL;
gl.type_instance = NULL;
- status = foreach_host (callback_host, &gl);
+ gl_clear_instances ();
+ status = fs_scan (/* callback = */ gl_register_file, /* user data = */ NULL);
- if (graph_list_length > 1)
- qsort (graph_list, graph_list_length, sizeof (*graph_list), gl_compare);
+ gl_last_update = now;
return (status);
} /* }}} int gl_update */
-int gl_foreach (gl_callback callback, void *user_data) /* {{{ */
-{
- size_t i;
-
- for (i = 0; i < graph_list_length; i++)
- {
- int status;
-
- status = (*callback) (graph_list + i, user_data);
- if (status != 0)
- return (status);
- }
-
- return (0);
-} /* }}} int gl_foreach */
-
/* vim: set sw=2 sts=2 et fdm=marker : */
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