/**
* collectd - src/plugin.c
- * Copyright (C) 2005,2006 Florian octo Forster
+ * Copyright (C) 2005-2008 Florian octo Forster
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
*
* Authors:
* Florian octo Forster <octo at verplant.org>
+ * Sebastian Harl <sh at tokkee.org>
**/
#include "collectd.h"
#include "common.h"
#include "plugin.h"
#include "configfile.h"
+#include "utils_avltree.h"
#include "utils_llist.h"
+#include "utils_cache.h"
+#include "utils_threshold.h"
/*
* Private structures
static llist_t *list_init;
static llist_t *list_read;
static llist_t *list_write;
+static llist_t *list_flush;
static llist_t *list_shutdown;
-static llist_t *list_data_set;
static llist_t *list_log;
+static llist_t *list_notification;
+
+static c_avl_tree_t *data_sets;
static char *plugindir = NULL;
static int register_callback (llist_t **list, const char *name, void *callback)
{
llentry_t *le;
+ char *key;
if ((*list == NULL)
&& ((*list = llist_create ()) == NULL))
le = llist_search (*list, name);
if (le == NULL)
{
- le = llentry_create (name, callback);
+ key = strdup (name);
+ if (key == NULL)
+ return (-1);
+
+ le = llentry_create (key, callback);
if (le == NULL)
+ {
+ free (key);
return (-1);
+ }
llist_append (*list, le);
}
return (-1);
llist_remove (list, e);
+ free (e->key);
llentry_destroy (e);
return (0);
const char *error = lt_dlerror ();
ERROR ("lt_dlopen failed: %s", error);
- DEBUG ("lt_dlopen failed: %s", error);
+ fprintf (stderr, "lt_dlopen failed: %s\n", error);
return (1);
}
rf->wait_time = 86400;
NOTICE ("read-function of plugin `%s' "
- "failed. Will syspend it for %i "
+ "failed. Will suspend it for %i "
"seconds.", le->key, rf->wait_left);
}
else
pthread_mutex_unlock (&read_lock);
pthread_exit (NULL);
+ return ((void *) 0);
} /* void *plugin_read_thread */
static void start_threads (int num)
ret = 0;
break;
}
+ else
+ {
+ fprintf (stderr, "Unable to load plugin %s.\n", type);
+ }
}
closedir (dh);
return (register_callback (&list_write, name, (void *) callback));
} /* int plugin_register_write */
+int plugin_register_flush (const char *name, int (*callback) (const int))
+{
+ return (register_callback (&list_flush, name, (void *) callback));
+} /* int plugin_register_flush */
+
int plugin_register_shutdown (char *name,
int (*callback) (void))
{
data_set_t *ds_copy;
int i;
- if ((list_data_set != NULL)
- && (llist_search (list_data_set, ds->type) != NULL))
+ if ((data_sets != NULL)
+ && (c_avl_get (data_sets, ds->type, NULL) == 0))
{
NOTICE ("Replacing DS `%s' with another version.", ds->type);
plugin_unregister_data_set (ds->type);
}
+ else if (data_sets == NULL)
+ {
+ data_sets = c_avl_create ((int (*) (const void *, const void *)) strcmp);
+ if (data_sets == NULL)
+ return (-1);
+ }
ds_copy = (data_set_t *) malloc (sizeof (data_set_t));
if (ds_copy == NULL)
for (i = 0; i < ds->ds_num; i++)
memcpy (ds_copy->ds + i, ds->ds + i, sizeof (data_source_t));
- return (register_callback (&list_data_set, ds->type, (void *) ds_copy));
+ return (c_avl_insert (data_sets, (void *) ds_copy->type, (void *) ds_copy));
} /* int plugin_register_data_set */
int plugin_register_log (char *name,
return (register_callback (&list_log, name, (void *) callback));
} /* int plugin_register_log */
+int plugin_register_notification (const char *name,
+ int (*callback) (const notification_t *notif))
+{
+ return (register_callback (&list_notification, name, (void *) callback));
+} /* int plugin_register_log */
+
int plugin_unregister_config (const char *name)
{
cf_unregister (name);
llist_remove (list_read, e);
free (e->value);
+ free (e->key);
llentry_destroy (e);
return (0);
return (plugin_unregister (list_write, name));
}
+int plugin_unregister_flush (const char *name)
+{
+ return (plugin_unregister (list_flush, name));
+}
+
int plugin_unregister_shutdown (const char *name)
{
return (plugin_unregister (list_shutdown, name));
int plugin_unregister_data_set (const char *name)
{
- llentry_t *e;
data_set_t *ds;
- if (list_data_set == NULL)
+ if (data_sets == NULL)
return (-1);
- e = llist_search (list_data_set, name);
-
- if (e == NULL)
+ if (c_avl_remove (data_sets, name, NULL, (void *) &ds) != 0)
return (-1);
- llist_remove (list_data_set, e);
- ds = (data_set_t *) e->value;
- llentry_destroy (e);
-
sfree (ds->ds);
sfree (ds);
return (plugin_unregister (list_log, name));
}
+int plugin_unregister_notification (const char *name)
+{
+ return (plugin_unregister (list_notification, name));
+}
+
void plugin_init_all (void)
{
int (*callback) (void);
start_threads ((num > 0) ? num : 5);
}
+ /* Init the value cache */
+ uc_init ();
+
if (list_init == NULL)
return;
}
} /* void plugin_init_all */
-void plugin_read_all (const int *loop)
+void plugin_read_all (void)
{
llentry_t *le;
read_func_t *rf;
+ uc_check_timeout ();
+
if (list_read == NULL)
return;
pthread_mutex_unlock (&read_lock);
} /* void plugin_read_all */
+int plugin_flush_one (int timeout, const char *name)
+{
+ int (*callback) (int);
+ llentry_t *le;
+ int status;
+
+ if (list_flush == NULL)
+ return (-1);
+
+ le = llist_search (list_flush, name);
+ if (le == NULL)
+ return (-1);
+ callback = (int (*) (int)) le->value;
+
+ status = (*callback) (timeout);
+
+ return (status);
+} /* int plugin_flush_ont */
+
+void plugin_flush_all (int timeout)
+{
+ int (*callback) (int);
+ llentry_t *le;
+
+ if (list_flush == NULL)
+ return;
+
+ le = llist_head (list_flush);
+ while (le != NULL)
+ {
+ callback = (int (*) (int)) le->value;
+ le = le->next;
+
+ (*callback) (timeout);
+ }
+} /* void plugin_flush_all */
+
void plugin_shutdown_all (void)
{
int (*callback) (void);
data_set_t *ds;
llentry_t *le;
- if ((list_write == NULL) || (list_data_set == NULL))
+ if ((list_write == NULL) || (data_sets == NULL))
return (-1);
- le = llist_search (list_data_set, name);
- if (le == NULL)
+ if (c_avl_get (data_sets, name, (void *) &ds) != 0)
{
DEBUG ("No such dataset registered: %s", name);
return (-1);
}
- ds = (data_set_t *) le->value;
-
- DEBUG ("plugin: plugin_dispatch_values: time = %u; host = %s; "
- "plugin = %s; plugin_instance = %s; type = %s; "
- "type_instance = %s;",
- (unsigned int) vl->time, vl->host,
+ DEBUG ("plugin: plugin_dispatch_values: time = %u; interval = %i; "
+ "host = %s; "
+ "plugin = %s; plugin_instance = %s; "
+ "type = %s; type_instance = %s;",
+ (unsigned int) vl->time, vl->interval,
+ vl->host,
vl->plugin, vl->plugin_instance,
ds->type, vl->type_instance);
escape_slashes (vl->plugin_instance, sizeof (vl->plugin_instance));
escape_slashes (vl->type_instance, sizeof (vl->type_instance));
+ /* Update the value cache */
+ uc_update (ds, vl);
+ ut_check_threshold (ds, vl);
+
le = llist_head (list_write);
while (le != NULL)
{
return (0);
} /* int plugin_dispatch_values */
+int plugin_dispatch_notification (const notification_t *notif)
+{
+ int (*callback) (const notification_t *);
+ llentry_t *le;
+ /* Possible TODO: Add flap detection here */
+
+ DEBUG ("plugin_dispatch_notification: severity = %i; message = %s; "
+ "time = %u; host = %s;",
+ notif->severity, notif->message,
+ (unsigned int) notif->time, notif->host);
+
+ /* Nobody cares for notifications */
+ if (list_notification == NULL)
+ return (-1);
+
+ le = llist_head (list_notification);
+ while (le != NULL)
+ {
+ callback = (int (*) (const notification_t *)) le->value;
+ (*callback) (notif);
+
+ le = le->next;
+ }
+
+ return (0);
+} /* int plugin_dispatch_notification */
+
void plugin_log (int level, const char *format, ...)
{
char msg[512];
}
} /* void plugin_log */
-void plugin_complain (int level, complain_t *c, const char *format, ...)
-{
- char message[512];
- va_list ap;
-
- if (c->delay > 0)
- {
- c->delay--;
- return;
- }
-
- if (c->interval < interval_g)
- c->interval = interval_g;
- else
- c->interval *= 2;
-
- if (c->interval > 86400)
- c->interval = 86400;
-
- c->delay = c->interval / interval_g;
-
- va_start (ap, format);
- vsnprintf (message, 512, format, ap);
- message[511] = '\0';
- va_end (ap);
-
- plugin_log (level, message);
-}
-
-void plugin_relief (int level, complain_t *c, const char *format, ...)
-{
- char message[512];
- va_list ap;
-
- if (c->interval == 0)
- return;
-
- c->interval = 0;
-
- va_start (ap, format);
- vsnprintf (message, 512, format, ap);
- message[511] = '\0';
- va_end (ap);
-
- plugin_log (level, message);
-}
-
const data_set_t *plugin_get_ds (const char *name)
{
data_set_t *ds;
- llentry_t *le;
- le = llist_search (list_data_set, name);
- if (le == NULL)
+ if (c_avl_get (data_sets, name, (void *) &ds) != 0)
{
DEBUG ("No such dataset registered: %s", name);
return (NULL);
}
- ds = (data_set_t *) le->value;
-
return (ds);
} /* data_set_t *plugin_get_ds */
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