**/
#include "collectd.h"
+
#include "common.h"
#include "filter_chain.h"
+#include "meta_data.h"
+#include "utils_subst.h"
+
+struct ts_key_list_s
+{
+ char *key;
+ struct ts_key_list_s *next;
+};
+typedef struct ts_key_list_s ts_key_list_t;
+
+static void ts_key_list_free (ts_key_list_t *l) /* {{{ */
+{
+ if (l == NULL)
+ return;
+
+ sfree (l->key);
+
+ if (l->next != NULL)
+ ts_key_list_free (l->next);
+
+ sfree (l);
+} /* }}} void ts_name_list_free */
struct ts_data_s
{
char *plugin_instance;
/* char *type; */
char *type_instance;
+ meta_data_t *meta;
+ ts_key_list_t *meta_delete;
};
typedef struct ts_data_s ts_data_t;
+static int ts_util_get_key_and_string_wo_strdup (const oconfig_item_t *ci, char **ret_key, char **ret_string) /* {{{ */
+{
+ if ((ci->values_num != 2)
+ || (ci->values[0].type != OCONFIG_TYPE_STRING)
+ || (ci->values[1].type != OCONFIG_TYPE_STRING))
+ {
+ ERROR ("ts_util_get_key_and_string_wo_strdup: The %s option requires "
+ "exactly two string arguments.", ci->key);
+ return (-1);
+ }
+
+ *ret_key = ci->values[0].value.string;
+ *ret_string = ci->values[1].value.string;
+
+ return (0);
+} /* }}} int ts_util_get_key_and_string_wo_strdup */
+
static int ts_config_add_string (char **dest, /* {{{ */
const oconfig_item_t *ci, int may_be_empty)
{
return (0);
} /* }}} int ts_config_add_string */
+static int ts_config_add_meta (meta_data_t **dest, /* {{{ */
+ const oconfig_item_t *ci, int may_be_empty)
+{
+ char *key = NULL;
+ char *string = NULL;
+ int status;
+
+ status = ts_util_get_key_and_string_wo_strdup (ci, &key, &string);
+ if (status != 0)
+ return (status);
+
+ if (strlen (key) == 0)
+ {
+ ERROR ("Target `set': The `%s' option does not accept empty string as "
+ "first argument.", ci->key);
+ return (-1);
+ }
+
+ if (!may_be_empty && (strlen (string) == 0))
+ {
+ ERROR ("Target `set': The `%s' option does not accept empty string as "
+ "second argument.", ci->key);
+ return (-1);
+ }
+
+ if ((*dest) == NULL)
+ {
+ /* Create a new meta_data_t */
+ if ((*dest = meta_data_create()) == NULL)
+ {
+ ERROR ("Target `set': failed to create a meta data for `%s'.", ci->key);
+ return (-ENOMEM);
+ }
+ }
+
+ return (meta_data_add_string (*dest, key, string));
+} /* }}} int ts_config_add_meta */
+
+static int ts_config_add_meta_delete (ts_key_list_t **dest, /* {{{ */
+ const oconfig_item_t *ci)
+{
+ ts_key_list_t *entry = NULL;
+
+ entry = calloc (1, sizeof (*entry));
+ if (entry == NULL)
+ {
+ ERROR ("ts_config_add_meta_delete: calloc failed.");
+ return (-ENOMEM);
+ }
+
+ if (cf_util_get_string (ci, &entry->key) != 0)
+ {
+ ts_key_list_free (entry);
+ return (-1); /* An error has already been reported. */
+ }
+
+ if (strlen (entry->key) == 0)
+ {
+ ERROR ("Target `set': The `%s' option does not accept empty string as "
+ "first argument.", ci->key);
+ ts_key_list_free (entry);
+ return (-1);
+ }
+
+ entry->next = *dest;
+ *dest = entry;
+
+ return (0);
+} /* }}} int ts_config_add_meta_delete */
+
+static void ts_subst (char *dest, size_t size, const char *string, /* {{{ */
+ const value_list_t *vl)
+{
+ char temp[DATA_MAX_NAME_LEN];
+
+ /* Initialize the field with the template. */
+ sstrncpy (dest, string, size);
+
+ if (strchr (dest, '%') == NULL)
+ return;
+
+#define REPLACE_FIELD(t, v) \
+ if (subst_string (temp, sizeof (temp), dest, t, v) != NULL) \
+ sstrncpy (dest, temp, size);
+ REPLACE_FIELD ("%{host}", vl->host);
+ REPLACE_FIELD ("%{plugin}", vl->plugin);
+ REPLACE_FIELD ("%{plugin_instance}", vl->plugin_instance);
+ REPLACE_FIELD ("%{type}", vl->type);
+ REPLACE_FIELD ("%{type_instance}", vl->type_instance);
+
+ if (vl->meta != NULL)
+ {
+ char **meta_toc;
+ int meta_entries = meta_data_toc (vl->meta, &meta_toc);
+ for (int i = 0; i < meta_entries; i++)
+ {
+ char meta_name[DATA_MAX_NAME_LEN];
+ char *value_str;
+ const char *key = meta_toc[i];
+
+ ssnprintf (meta_name, sizeof (meta_name), "%%{meta:%s}", key);
+ if (meta_data_as_string (vl->meta, key, &value_str) != 0)
+ continue;
+
+ REPLACE_FIELD (meta_name, value_str);
+ sfree (value_str);
+ }
+
+ strarray_free (meta_toc, (size_t) meta_entries);
+ }
+} /* }}} int ts_subst */
+
static int ts_destroy (void **user_data) /* {{{ */
{
ts_data_t *data;
free (data->plugin_instance);
/* free (data->type); */
free (data->type_instance);
+ meta_data_destroy(data->meta);
+ ts_key_list_free (data->meta_delete);
free (data);
return (0);
{
ts_data_t *data;
int status;
- int i;
- data = (ts_data_t *) malloc (sizeof (*data));
+ data = calloc (1, sizeof (*data));
if (data == NULL)
{
- ERROR ("ts_create: malloc failed.");
+ ERROR ("ts_create: calloc failed.");
return (-ENOMEM);
}
- memset (data, 0, sizeof (*data));
data->host = NULL;
data->plugin = NULL;
data->plugin_instance = NULL;
/* data->type = NULL; */
data->type_instance = NULL;
+ data->meta = NULL;
+ data->meta_delete = NULL;
status = 0;
- for (i = 0; i < ci->children_num; i++)
+ for (int i = 0; i < ci->children_num; i++)
{
oconfig_item_t *child = ci->children + i;
else if (strcasecmp ("TypeInstance", child->key) == 0)
status = ts_config_add_string (&data->type_instance, child,
/* may be empty = */ 1);
+ else if (strcasecmp ("MetaData", child->key) == 0)
+ status = ts_config_add_meta (&data->meta, child,
+ /* may be empty = */ 1);
+ else if (strcasecmp ("DeleteMetaData", child->key) == 0)
+ status = ts_config_add_meta_delete (&data->meta_delete, child);
else
{
ERROR ("Target `set': The `%s' configuration option is not understood "
&& (data->plugin == NULL)
&& (data->plugin_instance == NULL)
/* && (data->type == NULL) */
- && (data->type_instance == NULL))
+ && (data->type_instance == NULL)
+ && (data->meta == NULL)
+ && (data->meta_delete == NULL))
{
ERROR ("Target `set': You need to set at least one of `Host', "
- "`Plugin', `PluginInstance' or `TypeInstance'.");
+ "`Plugin', `PluginInstance', `TypeInstance', "
+ "`MetaData', or `DeleteMetaData'.");
status = -1;
}
+ if (data->meta != NULL)
+ {
+ /* If data->meta_delete is NULL, this loop is a no-op. */
+ for (ts_key_list_t *l=data->meta_delete; l != NULL; l = l->next)
+ {
+ if (meta_data_type (data->meta, l->key) != 0)
+ {
+ /* MetaData and DeleteMetaData for the same key. */
+ ERROR ("Target `set': Can only have one of `MetaData' or "
+ "`DeleteMetaData' for any given key.");
+ status = -1;
+ }
+ }
+ }
+
break;
}
notification_meta_t __attribute__((unused)) **meta, void **user_data)
{
ts_data_t *data;
+ value_list_t orig;
+ meta_data_t *new_meta = NULL;
if ((ds == NULL) || (vl == NULL) || (user_data == NULL))
return (-EINVAL);
return (-EINVAL);
}
-#define SET_FIELD(f) if (data->f != NULL) { sstrncpy (vl->f, data->f, sizeof (vl->f)); }
- SET_FIELD (host);
- SET_FIELD (plugin);
- SET_FIELD (plugin_instance);
- /* SET_FIELD (type); */
- SET_FIELD (type_instance);
+ orig = *vl;
+
+ if (data->meta != NULL)
+ {
+ char temp[DATA_MAX_NAME_LEN*2];
+ int meta_entries;
+ char **meta_toc;
+
+ if ((new_meta = meta_data_create()) == NULL)
+ {
+ ERROR ("Target `set': failed to create replacement metadata.");
+ return (-ENOMEM);
+ }
+
+ meta_entries = meta_data_toc (data->meta, &meta_toc);
+ for (int i = 0; i < meta_entries; i++)
+ {
+ const char *key = meta_toc[i];
+ char *string;
+ int status;
+
+ status = meta_data_get_string (data->meta, key, &string);
+ if (status)
+ {
+ ERROR ("Target `set': Unable to get replacement metadata value `%s'.",
+ key);
+ strarray_free (meta_toc, (size_t) meta_entries);
+ return (status);
+ }
+
+ ts_subst (temp, sizeof (temp), string, &orig);
+
+ DEBUG ("target_set: ts_invoke: setting metadata value for key `%s': "
+ "`%s'.", key, temp);
+
+ sfree (string);
+
+ status = meta_data_add_string (new_meta, key, temp);
+ if (status)
+ {
+ ERROR ("Target `set': Unable to set metadata value `%s'.", key);
+ strarray_free (meta_toc, (size_t) meta_entries);
+ return (status);
+ }
+ }
+
+ strarray_free (meta_toc, (size_t) meta_entries);
+ }
+
+#define SUBST_FIELD(f) \
+ if (data->f != NULL) { \
+ ts_subst (vl->f, sizeof (vl->f), data->f, &orig); \
+ DEBUG ("target_set: ts_invoke: setting "#f": `%s'.", vl->f); \
+ }
+ SUBST_FIELD (host);
+ SUBST_FIELD (plugin);
+ SUBST_FIELD (plugin_instance);
+ /* SUBST_FIELD (type); */
+ SUBST_FIELD (type_instance);
+
+ /* Need to merge the metadata in now, because of the shallow copy. */
+ if (new_meta != NULL)
+ {
+ meta_data_clone_merge(&(vl->meta), new_meta);
+ meta_data_destroy(new_meta);
+ }
+
+ /* If data->meta_delete is NULL, this loop is a no-op. */
+ for (ts_key_list_t *l=data->meta_delete; l != NULL; l = l->next)
+ {
+ DEBUG ("target_set: ts_invoke: deleting metadata value for key `%s'.",
+ l->key);
+ meta_data_delete(vl->meta, l->key);
+ }
return (FC_TARGET_CONTINUE);
} /* }}} int ts_invoke */
void module_register (void)
{
- target_proc_t tproc;
+ target_proc_t tproc = { 0 };
- memset (&tproc, 0, sizeof (tproc));
tproc.create = ts_create;
tproc.destroy = ts_destroy;
tproc.invoke = ts_invoke;
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