1 /**
2 * collectd - src/target_set.c
3 * Copyright (C) 2008-2010 Florian Forster
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU Lesser General Public License as published by
7 * the Free Software Foundation; only version 2.1 of the License is
8 * applicable.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this program; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 * Authors:
20 * Florian Forster <octo at verplant.org>
21 **/
23 #include "collectd.h"
24 #include "plugin.h"
25 #include "common.h"
26 #include "filter_chain.h"
28 static void v5_swap_instances (value_list_t *vl) /* {{{ */
29 {
30 char tmp[DATA_MAX_NAME_LEN];
32 assert (sizeof (tmp) == sizeof (vl->plugin_instance));
33 assert (sizeof (tmp) == sizeof (vl->type_instance));
35 memcpy (tmp, vl->plugin_instance, sizeof (tmp));
36 memcpy (vl->plugin_instance, vl->type_instance, sizeof (tmp));
37 memcpy (vl->type_instance, tmp, sizeof (tmp));
38 } /* }}} void v5_swap_instances */
40 /*
41 * Df type
42 *
43 * By default, the "df" plugin of version 4.* uses the "df" type and puts the
44 * mount point in the type instance. Detect this behavior and convert the type
45 * to "df_complex". This can be selected in versions 4.9 and 4.10 by setting
46 * the "ReportReserved" option of the "df" plugin.
47 */
48 static int v5_df (const data_set_t *ds, value_list_t *vl) /* {{{ */
49 {
50 value_list_t new_vl;
51 value_t new_value;
53 /* Can't upgrade if both instances have been set. */
54 if ((vl->plugin_instance[0] != 0)
55 && (vl->type_instance[0] != 0))
56 return (FC_TARGET_CONTINUE);
58 /* Copy everything: Time, interval, host, ... */
59 memcpy (&new_vl, vl, sizeof (new_vl));
61 /* Reset data we can't simply copy */
62 new_vl.values = &new_value;
63 new_vl.values_len = 1;
64 new_vl.meta = NULL;
66 /* Move the mount point name to the plugin instance */
67 if (new_vl.plugin_instance[0] == 0)
68 v5_swap_instances (&new_vl);
70 /* Change the type to "df_complex" */
71 memcpy (new_vl.type, "df_complex", sizeof (new_vl.type));
73 /* Dispatch two new value lists instead of this one */
74 new_vl.values[0].gauge = vl->values[0].gauge;
75 memcpy (new_vl.type_instance, "used", sizeof (new_vl.type_instance));
76 plugin_dispatch_values (&new_vl);
78 new_vl.values[0].gauge = vl->values[1].gauge;
79 memcpy (new_vl.type_instance, "free", sizeof (new_vl.type_instance));
80 plugin_dispatch_values (&new_vl);
82 /* Abort processing */
83 return (FC_TARGET_STOP);
84 } /* }}} int v5_df */
86 /*
87 * Interface plugin
88 *
89 * 4.* stores the interface in the type instance and leaves the plugin
90 * instance empty. If this is the case, put the interface name into the plugin
91 * instance and clear the type instance.
92 */
93 static int v5_interface (const data_set_t *ds, value_list_t *vl) /* {{{ */
94 {
95 if ((vl->plugin_instance[0] != 0) || (vl->type_instance[0] == 0))
96 return (FC_TARGET_CONTINUE);
98 v5_swap_instances (vl);
99 return (FC_TARGET_CONTINUE);
100 } /* }}} int v5_interface */
102 static int v5_destroy (void **user_data) /* {{{ */
103 {
104 return (0);
105 } /* }}} int v5_destroy */
107 static int v5_create (const oconfig_item_t *ci, void **user_data) /* {{{ */
108 {
109 *user_data = NULL;
110 return (0);
111 } /* }}} int v5_create */
113 static int v5_invoke (const data_set_t *ds, value_list_t *vl, /* {{{ */
114 notification_meta_t __attribute__((unused)) **meta,
115 void __attribute__((unused)) **user_data)
116 {
117 if ((ds == NULL) || (vl == NULL) || (user_data == NULL))
118 return (-EINVAL);
120 if (strcmp ("df", vl->type) == 0)
121 return (v5_df (ds, vl));
122 else if (strcmp ("interface", vl->plugin) == 0)
123 return (v5_interface (ds, vl));
125 return (FC_TARGET_CONTINUE);
126 } /* }}} int v5_invoke */
128 void module_register (void)
129 {
130 target_proc_t tproc;
132 memset (&tproc, 0, sizeof (tproc));
133 tproc.create = v5_create;
134 tproc.destroy = v5_destroy;
135 tproc.invoke = v5_invoke;
136 fc_register_target ("v5upgrade", tproc);
137 } /* module_register */
139 /* vim: set sw=2 sts=2 tw=78 et fdm=marker : */