2 * collectd - src/target_set.c
3 * Copyright (C) 2008 Florian Forster
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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21 * DEALINGS IN THE SOFTWARE.
24 * Florian Forster <octo at collectd.org>
30 #include "filter_chain.h"
36 char *plugin_instance;
41 typedef struct ts_data_s ts_data_t;
43 static int ts_util_get_key_and_string_wo_strdup (const oconfig_item_t *ci, char **ret_key, char **ret_string) /* {{{ */
45 if ((ci->values_num != 2)
46 || (ci->values[0].type != OCONFIG_TYPE_STRING)
47 || (ci->values[1].type != OCONFIG_TYPE_STRING))
49 ERROR ("ts_util_get_key_and_string_wo_strdup: The %s option requires "
50 "exactly two string argument.", ci->key);
54 *ret_key = ci->values[0].value.string;
55 *ret_string = ci->values[1].value.string;
58 } /* }}} int ts_util_get_key_and_string_wo_strdup */
60 static int ts_config_add_string (char **dest, /* {{{ */
61 const oconfig_item_t *ci, int may_be_empty)
66 status = cf_util_get_string (ci, &tmp);
70 if (!may_be_empty && (strlen (tmp) == 0))
72 ERROR ("Target `set': The `%s' option does not accept empty strings.",
80 } /* }}} int ts_config_add_string */
82 static int ts_config_add_meta (meta_data_t **dest, /* {{{ */
83 const oconfig_item_t *ci, int may_be_empty)
89 status = ts_util_get_key_and_string_wo_strdup (ci, &key, &string);
93 if (strlen (key) == 0)
95 ERROR ("Target `set': The `%s' option does not accept empty string as first argument.",
100 if (!may_be_empty && (strlen (string) == 0))
102 ERROR ("Target `set': The `%s' option does not accept empty string as second argument.",
109 // Create a new meta_data_t
110 if ((*dest = meta_data_create()) == NULL)
112 ERROR ("Target `set': failed to create a meta data for `%s'.", ci->key);
117 return (meta_data_add_string (*dest, key, string));
118 } /* }}} int ts_config_add_meta */
120 static int ts_destroy (void **user_data) /* {{{ */
124 if (user_data == NULL)
133 free (data->plugin_instance);
134 /* free (data->type); */
135 free (data->type_instance);
136 meta_data_destroy(data->meta);
140 } /* }}} int ts_destroy */
142 static int ts_create (const oconfig_item_t *ci, void **user_data) /* {{{ */
148 data = calloc (1, sizeof (*data));
151 ERROR ("ts_create: calloc failed.");
157 data->plugin_instance = NULL;
158 /* data->type = NULL; */
159 data->type_instance = NULL;
163 for (i = 0; i < ci->children_num; i++)
165 oconfig_item_t *child = ci->children + i;
167 if ((strcasecmp ("Host", child->key) == 0)
168 || (strcasecmp ("Hostname", child->key) == 0))
169 status = ts_config_add_string (&data->host, child,
170 /* may be empty = */ 0);
171 else if (strcasecmp ("Plugin", child->key) == 0)
172 status = ts_config_add_string (&data->plugin, child,
173 /* may be empty = */ 0);
174 else if (strcasecmp ("PluginInstance", child->key) == 0)
175 status = ts_config_add_string (&data->plugin_instance, child,
176 /* may be empty = */ 1);
178 else if (strcasecmp ("Type", child->key) == 0)
179 status = ts_config_add_string (&data->type, child,
180 /* may be empty = */ 0);
182 else if (strcasecmp ("TypeInstance", child->key) == 0)
183 status = ts_config_add_string (&data->type_instance, child,
184 /* may be empty = */ 1);
185 else if (strcasecmp ("MetaDataSet", child->key) == 0)
186 status = ts_config_add_meta (&data->meta, child,
187 /* may be empty = */ 1);
190 ERROR ("Target `set': The `%s' configuration option is not understood "
191 "and will be ignored.", child->key);
199 /* Additional sanity-checking */
202 if ((data->host == NULL)
203 && (data->plugin == NULL)
204 && (data->plugin_instance == NULL)
205 /* && (data->type == NULL) */
206 && (data->type_instance == NULL)
207 && (data->meta == NULL))
209 ERROR ("Target `set': You need to set at least one of `Host', "
210 "`Plugin', `PluginInstance', `TypeInstance', "
211 "`MetaDataSet' or `MetaDataEval'.");
220 ts_destroy ((void *) &data);
226 } /* }}} int ts_create */
228 static int ts_invoke (const data_set_t *ds, value_list_t *vl, /* {{{ */
229 notification_meta_t __attribute__((unused)) **meta, void **user_data)
233 if ((ds == NULL) || (vl == NULL) || (user_data == NULL))
239 ERROR ("Target `set': Invoke: `data' is NULL.");
243 if (data->meta != NULL)
245 meta_data_clone_merge(&(vl->meta), data->meta);
248 #define SET_FIELD(f) if (data->f != NULL) { sstrncpy (vl->f, data->f, sizeof (vl->f)); }
251 SET_FIELD (plugin_instance);
252 /* SET_FIELD (type); */
253 SET_FIELD (type_instance);
255 return (FC_TARGET_CONTINUE);
256 } /* }}} int ts_invoke */
258 void module_register (void)
260 target_proc_t tproc = { 0 };
262 tproc.create = ts_create;
263 tproc.destroy = ts_destroy;
264 tproc.invoke = ts_invoke;
265 fc_register_target ("set", tproc);
266 } /* module_register */
268 /* vim: set sw=2 sts=2 tw=78 et fdm=marker : */