#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 *host;
/* char *type; */
char *type_instance;
meta_data_t *meta;
+ ts_key_list_t *meta_delete;
};
typedef struct ts_data_s ts_data_t;
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 argument.",
+ "exactly two string arguments.",
ci->key);
- return (-1);
+ return -1;
}
*ret_key = ci->values[0].value.string;
*ret_string = ci->values[1].value.string;
- return (0);
+ return 0;
} /* }}} int ts_util_get_key_and_string_wo_strdup */
static int ts_config_add_string(char **dest, /* {{{ */
status = cf_util_get_string(ci, &tmp);
if (status != 0)
- return (status);
+ return status;
if (!may_be_empty && (strlen(tmp) == 0)) {
ERROR("Target `set': The `%s' option does not accept empty strings.",
ci->key);
sfree(tmp);
- return (-1);
+ return -1;
}
*dest = tmp;
- return (0);
+ return 0;
} /* }}} int ts_config_add_string */
static int ts_config_add_meta(meta_data_t **dest, /* {{{ */
status = ts_util_get_key_and_string_wo_strdup(ci, &key, &string);
if (status != 0)
- return (status);
+ return status;
if (strlen(key) == 0) {
- ERROR("Target `set': The `%s' option does not accept empty string as first "
- "argument.",
+ ERROR("Target `set': The `%s' option does not accept empty string as "
+ "first argument.",
ci->key);
- return (-1);
+ 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);
+ return -1;
}
if ((*dest) == NULL) {
- // Create a new meta_data_t
+ /* 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 (-1);
+ return -ENOMEM;
}
}
- return (meta_data_add_string(*dest, key, string));
+ 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 = NULL;
+ int status = meta_data_toc(vl->meta, &meta_toc);
+ if (status <= 0)
+ return;
+ size_t meta_entries = (size_t)status;
+
+ for (size_t i = 0; i < meta_entries; i++) {
+ char meta_name[DATA_MAX_NAME_LEN];
+ char *value_str;
+ const char *key = meta_toc[i];
+
+ snprintf(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;
if (user_data == NULL)
- return (-EINVAL);
+ return -EINVAL;
data = *user_data;
if (data == NULL)
- return (0);
+ return 0;
free(data->host);
free(data->plugin);
/* free (data->type); */
free(data->type_instance);
meta_data_destroy(data->meta);
+ ts_key_list_free(data->meta_delete);
free(data);
- return (0);
+ return 0;
} /* }}} int ts_destroy */
static int ts_create(const oconfig_item_t *ci, void **user_data) /* {{{ */
data = calloc(1, sizeof(*data));
if (data == NULL) {
ERROR("ts_create: calloc failed.");
- return (-ENOMEM);
+ return -ENOMEM;
}
data->host = NULL;
/* data->type = NULL; */
data->type_instance = NULL;
data->meta = NULL;
+ data->meta_delete = NULL;
status = 0;
for (int i = 0; i < ci->children_num; i++) {
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 "
"and will be ignored.",
if ((data->host == NULL) && (data->plugin == NULL) &&
(data->plugin_instance == NULL)
/* && (data->type == NULL) */
- && (data->type_instance == NULL) && (data->meta == 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', `TypeInstance', `MetaData'.");
+ "`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;
}
if (status != 0) {
ts_destroy((void *)&data);
- return (status);
+ return status;
}
*user_data = data;
- return (0);
+ return 0;
} /* }}} int ts_create */
static int ts_invoke(const data_set_t *ds, value_list_t *vl, /* {{{ */
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;
data = *user_data;
if (data == NULL) {
ERROR("Target `set': Invoke: `data' is NULL.");
- return (-EINVAL);
+ return -EINVAL;
}
+ orig = *vl;
+
if (data->meta != NULL) {
- meta_data_clone_merge(&(vl->meta), data->meta);
+ char temp[DATA_MAX_NAME_LEN * 2];
+ char **meta_toc;
+
+ if ((new_meta = meta_data_create()) == NULL) {
+ ERROR("Target `set': failed to create replacement metadata.");
+ return -ENOMEM;
+ }
+
+ int status = meta_data_toc(data->meta, &meta_toc);
+ if (status < 0) {
+ ERROR("Target `set': meta_data_toc failed with status %d.", status);
+ return status;
+ }
+ size_t meta_entries = (size_t)status;
+
+ for (size_t 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, meta_entries);
+ meta_data_destroy(new_meta);
+ 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, meta_entries);
+ meta_data_destroy(new_meta);
+ return status;
+ }
+ }
+
+ strarray_free(meta_toc, meta_entries);
}
-#define SET_FIELD(f) \
+#define SUBST_FIELD(f) \
if (data->f != NULL) { \
- sstrncpy(vl->f, data->f, sizeof(vl->f)); \
+ 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);
}
- SET_FIELD(host);
- SET_FIELD(plugin);
- SET_FIELD(plugin_instance);
- /* SET_FIELD (type); */
- SET_FIELD(type_instance);
- return (FC_TARGET_CONTINUE);
+ return FC_TARGET_CONTINUE;
} /* }}} int ts_invoke */
void module_register(void) {
tproc.invoke = ts_invoke;
fc_register_target("set", tproc);
} /* module_register */
-
-/* vim: set sw=2 sts=2 tw=78 et fdm=marker : */
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