/**
* 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 "utils_complain.h"
#include <ltdl.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);
- fprintf (stderr, "lt_dlopen failed: %s\n", error);
+ ERROR ("lt_dlopen (%s) failed: %s", file, error);
+ fprintf (stderr, "lt_dlopen (%s) failed: %s\n", file, error);
return (1);
}
if ((reg_handle = (void (*) (void)) lt_dlsym (dlh, "module_register")) == NULL)
{
- WARNING ("Couldn't find symbol ``module_register'' in ``%s'': %s\n",
+ WARNING ("Couldn't find symbol `module_register' in `%s': %s\n",
file, lt_dlerror ());
lt_dlclose (dlh);
return (-1);
pthread_mutex_unlock (&read_lock);
pthread_exit (NULL);
+ return ((void *) 0);
} /* void *plugin_read_thread */
static void start_threads (int num)
/* `cpu' should not match `cpufreq'. To solve this we add `.so' to the
* type when matching the filename */
- if (snprintf (typename, BUFSIZE, "%s.so", type) >= BUFSIZE)
+ if (ssnprintf (typename, sizeof (typename),
+ "%s.so", type) >= sizeof (typename))
{
WARNING ("snprintf: truncated: `%s.so'", type);
return (-1);
if (strncasecmp (de->d_name, typename, typename_len))
continue;
- if (snprintf (filename, BUFSIZE, "%s/%s", dir, de->d_name) >= BUFSIZE)
+ if (ssnprintf (filename, sizeof (filename),
+ "%s/%s", dir, de->d_name) >= sizeof (filename))
{
WARNING ("snprintf: truncated: `%s/%s'", dir, de->d_name);
continue;
else if (!S_ISREG (statbuf.st_mode))
{
/* don't follow symlinks */
+ WARNING ("stat %s: not a regular file", filename);
continue;
}
return (register_callback (&list_write, name, (void *) callback));
} /* int plugin_register_write */
+int plugin_register_flush (const char *name,
+ int (*callback) (const int timeout, const char *identifier))
+{
+ 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);
llentry_t *le;
int status;
- /* Start read-threads */
- if (list_read != NULL)
- {
- const char *rt;
- int num;
- rt = global_option_get ("ReadThreads");
- num = atoi (rt);
- start_threads ((num > 0) ? num : 5);
- }
+ /* Init the value cache */
+ uc_init ();
- if (list_init == NULL)
+ if ((list_init == NULL) && (list_read == NULL))
return;
+ /* Calling all init callbacks before checking if read callbacks
+ * are available allows the init callbacks to register the read
+ * callback. */
le = llist_head (list_init);
while (le != NULL)
{
"failed with status %i. "
"Plugin will be unloaded.",
le->key, status);
+ /* Plugins that register read callbacks from the init
+ * callback should take care of appropriate error
+ * handling themselves. */
/* FIXME: Unload _all_ functions */
plugin_unregister_read (le->key);
}
le = le->next;
}
+
+ /* Start read-threads */
+ if (list_read != NULL)
+ {
+ const char *rt;
+ int num;
+ rt = global_option_get ("ReadThreads");
+ num = atoi (rt);
+ start_threads ((num > 0) ? num : 5);
+ }
} /* 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 (const char *plugin, int timeout, const char *identifier)
+{
+ int (*callback) (int timeout, const char *identifier);
+ llentry_t *le;
+
+ if (list_flush == NULL)
+ return (0);
+
+ le = llist_head (list_flush);
+ while (le != NULL)
+ {
+ if ((plugin != NULL)
+ && (strcmp (plugin, le->key) != 0))
+ {
+ le = le->next;
+ continue;
+ }
+
+ callback = (int (*) (int, const char *)) le->value;
+ (*callback) (timeout, identifier);
+
+ le = le->next;
+ }
+ return (0);
+} /* int plugin_flush */
+
void plugin_shutdown_all (void)
{
int (*callback) (void);
}
} /* void plugin_shutdown_all */
-int plugin_dispatch_values (const char *name, value_list_t *vl)
+int plugin_dispatch_values (value_list_t *vl)
{
+ static c_complain_t no_write_complaint = C_COMPLAIN_INIT;
+
int (*callback) (const data_set_t *, const value_list_t *);
data_set_t *ds;
llentry_t *le;
- if ((list_write == NULL) || (list_data_set == NULL))
+ if ((vl == NULL) || (*vl->type == '\0')) {
+ ERROR ("plugin_dispatch_values: Invalid value list.");
return (-1);
+ }
- le = llist_search (list_data_set, name);
- if (le == NULL)
+ if (list_write == NULL)
+ c_complain_once (LOG_WARNING, &no_write_complaint,
+ "plugin_dispatch_values: No write callback has been "
+ "registered. Please load at least one output plugin, "
+ "if you want the collected data to be stored.");
+
+ if (data_sets == NULL)
{
- DEBUG ("No such dataset registered: %s", name);
+ ERROR ("plugin_dispatch_values: No data sets registered. "
+ "Could the types database be read? Check "
+ "your `TypesDB' setting!");
return (-1);
}
- ds = (data_set_t *) le->value;
+ if (c_avl_get (data_sets, vl->type, (void *) &ds) != 0)
+ {
+ INFO ("plugin_dispatch_values: Dataset not found: %s", vl->type);
+ return (-1);
+ }
- DEBUG ("plugin: plugin_dispatch_values: time = %u; interval = %i; "
+ DEBUG ("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);
+ vl->type, vl->type_instance);
+
+#if COLLECT_DEBUG
+ assert (0 == strcmp (ds->type, vl->type));
+#else
+ if (0 != strcmp (ds->type, vl->type))
+ WARNING ("plugin_dispatch_values: (ds->type = %s) != (vl->type = %s)",
+ ds->type, vl->type);
+#endif
#if COLLECT_DEBUG
assert (ds->ds_num == vl->values_len);
#else
if (ds->ds_num != vl->values_len)
{
- ERROR ("plugin: ds->type = %s: (ds->ds_num = %i) != "
+ ERROR ("plugin_dispatch_values: ds->type = %s: "
+ "(ds->ds_num = %i) != "
"(vl->values_len = %i)",
ds->type, ds->ds_num, vl->values_len);
return (-1);
escape_slashes (vl->host, sizeof (vl->host));
escape_slashes (vl->plugin, sizeof (vl->plugin));
escape_slashes (vl->plugin_instance, sizeof (vl->plugin_instance));
+ escape_slashes (vl->type, sizeof (vl->type));
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];
+ char msg[1024];
va_list ap;
void (*callback) (int, const char *);
#endif
va_start (ap, format);
- vsnprintf (msg, 512, format, ap);
- msg[511] = '\0';
+ vsnprintf (msg, sizeof (msg), format, ap);
+ msg[sizeof (msg) - 1] = '\0';
va_end (ap);
le = llist_head (list_log);
}
} /* void plugin_log */
-void plugin_complain (int level, complain_t *c, const char *format, ...)
+const data_set_t *plugin_get_ds (const char *name)
{
- char message[512];
- va_list ap;
+ data_set_t *ds;
- if (c->delay > 0)
+ if (c_avl_get (data_sets, name, (void *) &ds) != 0)
{
- c->delay--;
- return;
+ DEBUG ("No such dataset registered: %s", name);
+ return (NULL);
}
- 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);
+ return (ds);
+} /* data_set_t *plugin_get_ds */
- plugin_log (level, message);
+static int plugin_notification_meta_add (notification_t *n,
+ const char *name,
+ enum notification_meta_type_e type,
+ const void *value)
+{
+ notification_meta_t *meta;
+ notification_meta_t *tail;
+
+ if ((n == NULL) || (name == NULL) || (value == NULL))
+ {
+ ERROR ("plugin_notification_meta_add: A pointer is NULL!");
+ return (-1);
+ }
+
+ meta = (notification_meta_t *) malloc (sizeof (notification_meta_t));
+ if (meta == NULL)
+ {
+ ERROR ("plugin_notification_meta_add: malloc failed.");
+ return (-1);
+ }
+ memset (meta, 0, sizeof (notification_meta_t));
+
+ sstrncpy (meta->name, name, sizeof (meta->name));
+ meta->type = type;
+
+ switch (type)
+ {
+ case NM_TYPE_STRING:
+ {
+ meta->nm_value.nm_string = strdup ((const char *) value);
+ if (meta->nm_value.nm_string == NULL)
+ {
+ ERROR ("plugin_notification_meta_add: strdup failed.");
+ sfree (meta);
+ return (-1);
+ }
+ break;
+ }
+ case NM_TYPE_SIGNED_INT:
+ {
+ meta->nm_value.nm_signed_int = *((int64_t *) value);
+ break;
+ }
+ case NM_TYPE_UNSIGNED_INT:
+ {
+ meta->nm_value.nm_unsigned_int = *((uint64_t *) value);
+ break;
+ }
+ case NM_TYPE_DOUBLE:
+ {
+ meta->nm_value.nm_double = *((double *) value);
+ break;
+ }
+ case NM_TYPE_BOOLEAN:
+ {
+ meta->nm_value.nm_boolean = *((bool *) value);
+ break;
+ }
+ default:
+ {
+ ERROR ("plugin_notification_meta_add: Unknown type: %i", type);
+ sfree (meta);
+ return (-1);
+ }
+ } /* switch (type) */
+
+ meta->next = NULL;
+ tail = n->meta;
+ while ((tail != NULL) && (tail->next != NULL))
+ tail = tail->next;
+
+ if (tail == NULL)
+ n->meta = meta;
+ else
+ tail->next = meta;
+
+ return (0);
+} /* int plugin_notification_meta_add */
+
+int plugin_notification_meta_add_string (notification_t *n,
+ const char *name,
+ const char *value)
+{
+ return (plugin_notification_meta_add (n, name, NM_TYPE_STRING, value));
}
-void plugin_relief (int level, complain_t *c, const char *format, ...)
+int plugin_notification_meta_add_signed_int (notification_t *n,
+ const char *name,
+ int64_t value)
{
- 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);
+ return (plugin_notification_meta_add (n, name, NM_TYPE_SIGNED_INT, &value));
}
-const data_set_t *plugin_get_ds (const char *name)
+int plugin_notification_meta_add_unsigned_int (notification_t *n,
+ const char *name,
+ uint64_t value)
{
- data_set_t *ds;
- llentry_t *le;
+ return (plugin_notification_meta_add (n, name, NM_TYPE_UNSIGNED_INT, &value));
+}
- le = llist_search (list_data_set, name);
- if (le == NULL)
- {
- DEBUG ("No such dataset registered: %s", name);
- return (NULL);
- }
+int plugin_notification_meta_add_double (notification_t *n,
+ const char *name,
+ double value)
+{
+ return (plugin_notification_meta_add (n, name, NM_TYPE_DOUBLE, &value));
+}
- ds = (data_set_t *) le->value;
+int plugin_notification_meta_add_boolean (notification_t *n,
+ const char *name,
+ bool value)
+{
+ return (plugin_notification_meta_add (n, name, NM_TYPE_BOOLEAN, &value));
+}
- return (ds);
-} /* data_set_t *plugin_get_ds */
+int plugin_notification_meta_copy (notification_t *dst,
+ const notification_t *src)
+{
+ notification_meta_t *meta;
+
+ assert (dst != NULL);
+ assert (src != NULL);
+ assert (dst != src);
+ assert ((src->meta == NULL) || (src->meta != dst->meta));
+
+ for (meta = src->meta; meta != NULL; meta = meta->next)
+ {
+ if (meta->type == NM_TYPE_STRING)
+ plugin_notification_meta_add_string (dst, meta->name,
+ meta->nm_value.nm_string);
+ else if (meta->type == NM_TYPE_SIGNED_INT)
+ plugin_notification_meta_add_signed_int (dst, meta->name,
+ meta->nm_value.nm_signed_int);
+ else if (meta->type == NM_TYPE_UNSIGNED_INT)
+ plugin_notification_meta_add_unsigned_int (dst, meta->name,
+ meta->nm_value.nm_unsigned_int);
+ else if (meta->type == NM_TYPE_DOUBLE)
+ plugin_notification_meta_add_double (dst, meta->name,
+ meta->nm_value.nm_double);
+ else if (meta->type == NM_TYPE_BOOLEAN)
+ plugin_notification_meta_add_boolean (dst, meta->name,
+ meta->nm_value.nm_boolean);
+ }
+
+ return (0);
+} /* int plugin_notification_meta_copy */
+
+int plugin_notification_meta_free (notification_t *n)
+{
+ notification_meta_t *this;
+ notification_meta_t *next;
+
+ if (n == NULL)
+ {
+ ERROR ("plugin_notification_meta_free: n == NULL!");
+ return (-1);
+ }
+
+ this = n->meta;
+ n->meta = NULL;
+ while (this != NULL)
+ {
+ next = this->next;
+
+ if (this->type == NM_TYPE_STRING)
+ {
+ free ((char *)this->nm_value.nm_string);
+ this->nm_value.nm_string = NULL;
+ }
+ sfree (this);
+
+ this = next;
+ }
+
+ return (0);
+} /* int plugin_notification_meta_free */
projects / collectd.git / blobdiff