diff --git a/src/plugin.c b/src/plugin.c
index 1715cac824e8aeafb913107df0452d6a21237146..61cc09c6251500c275ddee80582cd7bcbb8f7bab 100644 (file)
--- a/src/plugin.c
+++ b/src/plugin.c
/**
* collectd - src/plugin.c
- * Copyright (C) 2005,2006 Florian octo Forster
+ * Copyright (C) 2005-2009 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 "utils_llist.h"
#include "utils_cache.h"
#include "utils_threshold.h"
+#include "filter_chain.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_log;
static llist_t *list_notification;
+static fc_chain_t *pre_cache_chain = NULL;
+static fc_chain_t *post_cache_chain = NULL;
+
static c_avl_tree_t *data_sets;
static char *plugindir = NULL;
return (0);
}
-static void *plugin_read_thread (void *args)
+static void *plugin_read_thread (void __attribute__((unused)) *args)
{
llentry_t *le;
read_func_t *rf;
{
int i;
+ if (read_threads == NULL)
+ return;
+
pthread_mutex_lock (&read_lock);
read_loop = 0;
DEBUG ("plugin: stop_threads: Signalling `read_cond'");
int ret;
struct stat statbuf;
struct dirent *de;
+ int status;
DEBUG ("type = %s", type);
/* `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)
+ status = ssnprintf (typename, sizeof (typename), "%s.so", type);
+ if ((status < 0) || ((size_t) status >= 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)
+ status = ssnprintf (filename, sizeof (filename),
+ "%s/%s", dir, de->d_name);
+ if ((status < 0) || ((size_t) status >= sizeof (filename)))
{
WARNING ("snprintf: truncated: `%s/%s'", dir, de->d_name);
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))
{
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));
void plugin_init_all (void)
{
+ const char *chain_name;
int (*callback) (void);
llentry_t *le;
int status;
/* Init the value cache */
uc_init ();
+ chain_name = global_option_get ("PreCacheChain");
+ pre_cache_chain = fc_chain_get_by_name (chain_name);
+
+ chain_name = global_option_get ("PostCacheChain");
+ post_cache_chain = fc_chain_get_by_name (chain_name);
+
+
if ((list_init == NULL) && (list_read == NULL))
return;
int num;
rt = global_option_get ("ReadThreads");
num = atoi (rt);
- start_threads ((num > 0) ? num : 5);
+ if (num != -1)
+ start_threads ((num > 0) ? num : 5);
}
} /* void plugin_init_all */
pthread_mutex_unlock (&read_lock);
} /* void plugin_read_all */
+/* Read function called when the `-T' command line argument is given. */
+int plugin_read_all_once (void)
+{
+ llentry_t *le;
+ read_func_t *rf;
+ int status;
+ int return_status = 0;
+
+ if (list_read == NULL)
+ {
+ NOTICE ("No read-functions are registered.");
+ return (0);
+ }
+
+ for (le = llist_head (list_read);
+ le != NULL;
+ le = le->next)
+ {
+ rf = (read_func_t *) le->value;
+ status = rf->callback ();
+ if (status != 0)
+ {
+ NOTICE ("read-function of plugin `%s' failed.",
+ le->key);
+ return_status = -1;
+ }
+ }
+
+ return (return_status);
+} /* int plugin_read_all_once */
+
+int plugin_write (const char *plugin, /* {{{ */
+ const data_set_t *ds, const value_list_t *vl)
+{
+ int (*callback) (const data_set_t *ds, const value_list_t *vl);
+ llentry_t *le;
+ int status;
+
+ if (vl == NULL)
+ return (EINVAL);
+
+ if (list_write == NULL)
+ return (ENOENT);
+
+ if (ds == NULL)
+ {
+ ds = plugin_get_ds (vl->type);
+ if (ds == NULL)
+ {
+ ERROR ("plugin_write: Unable to lookup type `%s'.", vl->type);
+ return (ENOENT);
+ }
+ }
+
+ if (plugin == NULL)
+ {
+ int success = 0;
+ int failure = 0;
+
+ le = llist_head (list_write);
+ while (le != NULL)
+ {
+ callback = le->value;
+ status = (*callback) (ds, vl);
+ if (status != 0)
+ failure++;
+ else
+ success++;
+
+ le = le->next;
+ }
+
+ if ((success == 0) && (failure != 0))
+ status = -1;
+ else
+ status = 0;
+ }
+ else /* plugin != NULL */
+ {
+ le = llist_head (list_write);
+ while (le != NULL)
+ {
+ if (strcasecmp (plugin, le->key) == 0)
+ break;
+
+ le = le->next;
+ }
+
+ if (le == NULL)
+ return (ENOENT);
+
+ callback = le->value;
+ status = (*callback) (ds, vl);
+ }
+
+ return (status);
+} /* }}} int plugin_write */
+
+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)
{
- int (*callback) (const data_set_t *, const value_list_t *);
+ int status;
+ static c_complain_t no_write_complaint = C_COMPLAIN_INIT_STATIC;
+
data_set_t *ds;
- llentry_t *le;
- if (list_write == NULL)
- {
- ERROR ("plugin_dispatch_values: No write callback has been "
- "registered. Please load at least one plugin "
- "that provides a write function.");
+ if ((vl == NULL) || (*vl->type == '\0')) {
+ ERROR ("plugin_dispatch_values: Invalid value list.");
return (-1);
}
+ 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)
{
ERROR ("plugin_dispatch_values: No data sets registered. "
return (-1);
}
- if (c_avl_get (data_sets, name, (void *) &ds) != 0)
+ if (c_avl_get (data_sets, vl->type, (void *) &ds) != 0)
{
- INFO ("plugin_dispatch_values: Dataset not found: %s", name);
+ INFO ("plugin_dispatch_values: Dataset not found: %s", vl->type);
return (-1);
}
+ if (vl->time == 0)
+ vl->time = time (NULL);
+
DEBUG ("plugin_dispatch_values: time = %u; interval = %i; "
"host = %s; "
"plugin = %s; plugin_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);
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));
+ if (pre_cache_chain != NULL)
+ {
+ status = fc_process_chain (ds, vl, pre_cache_chain);
+ if (status < 0)
+ {
+ WARNING ("plugin_dispatch_values: Running the "
+ "pre-cache chain failed with "
+ "status %i (%#x).",
+ status, status);
+ }
+ else if (status == FC_TARGET_STOP)
+ return (0);
+ }
+
/* Update the value cache */
uc_update (ds, vl);
- ut_check_threshold (ds, vl);
- le = llist_head (list_write);
- while (le != NULL)
+ if (post_cache_chain != NULL)
{
- callback = (int (*) (const data_set_t *, const value_list_t *)) le->value;
- (*callback) (ds, vl);
-
- le = le->next;
+ status = fc_process_chain (ds, vl, post_cache_chain);
+ if (status < 0)
+ {
+ WARNING ("plugin_dispatch_values: Running the "
+ "post-cache chain failed with "
+ "status %i (%#x).",
+ status, status);
+ }
}
+ else
+ fc_default_action (ds, vl);
return (0);
} /* int plugin_dispatch_values */
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);
return (ds);
} /* data_set_t *plugin_get_ds */
+
+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));
+}
+
+int plugin_notification_meta_add_signed_int (notification_t *n,
+ const char *name,
+ int64_t value)
+{
+ return (plugin_notification_meta_add (n, name, NM_TYPE_SIGNED_INT, &value));
+}
+
+int plugin_notification_meta_add_unsigned_int (notification_t *n,
+ const char *name,
+ uint64_t value)
+{
+ return (plugin_notification_meta_add (n, name, NM_TYPE_UNSIGNED_INT, &value));
+}
+
+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));
+}
+
+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));
+}
+
+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 */