1 /**
2 * collectd - src/tokyotyrant.c
3 * Copyright (C) 2009 Paul Sadauskas
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Authors:
19 * Paul Sadauskas <psadauskas@gmail.com>
20 **/
22 #include "collectd.h"
23 #include "plugin.h"
24 #include "common.h"
25 #include "utils_cache.h"
26 #include "utils_parse_option.h"
28 #include <sys/types.h>
29 #include <sys/socket.h>
30 #include <netdb.h>
32 #include <tcrdb.h>
34 #define DEFAULT_HOST "127.0.0.1"
35 #define DEFAULT_PORT 1978
37 static const char *config_keys[] =
38 {
39 "Host",
40 "Port"
41 };
42 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
44 static char *config_host = NULL;
45 static char *config_port = NULL;
47 static TCRDB *rdb = NULL;
49 static int parse_service_name (const char *service_name)
50 {
51 struct addrinfo *ai_list;
52 struct addrinfo *ai_ptr;
53 struct addrinfo ai_hints;
54 int status;
55 int service_number;
57 ai_list = NULL;
58 memset (&ai_hints, 0, sizeof (ai_hints));
59 ai_hints.ai_family = AF_UNSPEC;
61 status = getaddrinfo (/* node = */ NULL, service_name,
62 &ai_hints, &ai_list);
63 if (status != 0)
64 {
65 ERROR ("tokyotyrant plugin: getaddrinfo failed: %s",
66 gai_strerror (status));
67 return (-1);
68 }
70 service_number = -1;
71 for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
72 {
73 if (ai_ptr->ai_family == AF_INET)
74 {
75 struct sockaddr_in *sa;
77 sa = (void *) ai_ptr->ai_addr;
78 service_number = (int) ntohs (sa->sin_port);
79 }
80 else if (ai_ptr->ai_family == AF_INET6)
81 {
82 struct sockaddr_in6 *sa;
84 sa = (void *) ai_ptr->ai_addr;
85 service_number = (int) ntohs (sa->sin6_port);
86 }
88 if ((service_number > 0) && (service_number <= 65535))
89 break;
90 }
92 freeaddrinfo (ai_list);
94 if ((service_number > 0) && (service_number <= 65535))
95 return (service_number);
96 return (-1);
97 } /* int parse_service_name */
99 static int tt_config (const char *key, const char *value)
100 {
101 if (strcasecmp ("Host", key) == 0)
102 {
103 char *temp;
105 temp = strdup (value);
106 if (temp == NULL)
107 {
108 ERROR("tokyotyrant plugin: Host strdup failed.");
109 return (1);
110 }
111 sfree (config_host);
112 config_host = temp;
113 }
114 else if (strcasecmp ("Port", key) == 0)
115 {
116 char *temp;
118 temp = strdup (value);
119 if (temp == NULL)
120 {
121 ERROR("tokyotyrant plugin: Port strdup failed.");
122 return (1);
123 }
124 sfree (config_port);
125 config_port = temp;
126 }
127 else
128 {
129 ERROR ("tokyotyrant plugin: error: unrecognized configuration key %s", key);
130 return (-1);
131 }
133 return (0);
134 }
136 static void printerr()
137 {
138 int ecode = tcrdbecode(rdb);
139 ERROR ("tokyotyrant plugin: error: %d, %s",
140 ecode, tcrdberrmsg(ecode));
141 }
143 static void tt_submit (gauge_t val, const char* type)
144 {
145 value_t values[1];
146 value_list_t vl = VALUE_LIST_INIT;
148 values[0].gauge = val;
150 vl.values = values;
151 vl.values_len = STATIC_ARRAY_SIZE (values);
153 sstrncpy (vl.host, config_host, sizeof (vl.host));
154 sstrncpy (vl.plugin, "tokyotyrant", sizeof (vl.plugin));
155 sstrncpy (vl.plugin_instance, config_port,
156 sizeof (vl.plugin_instance));
157 sstrncpy (vl.type, type, sizeof (vl.type));
159 plugin_dispatch_values (&vl);
160 }
162 static void tt_open_db (void)
163 {
164 char* host = NULL;
165 int port = DEFAULT_PORT;
167 if (rdb != NULL)
168 return;
170 host = ((config_host != NULL) ? config_host : DEFAULT_HOST);
172 if (config_port != NULL)
173 {
174 port = parse_service_name (config_port);
175 if (port <= 0)
176 return;
177 }
179 rdb = tcrdbnew ();
180 if (rdb == NULL)
181 return;
182 else if (!tcrdbopen(rdb, host, port))
183 {
184 printerr ();
185 tcrdbdel (rdb);
186 rdb = NULL;
187 }
188 } /* void tt_open_db */
190 static int tt_read (void) {
191 gauge_t rnum, size;
193 tt_open_db ();
194 if (rdb == NULL)
195 return (-1);
197 rnum = tcrdbrnum(rdb);
198 tt_submit (rnum, "records");
200 size = tcrdbsize(rdb);
201 tt_submit (size, "file_size");
203 return (0);
204 }
206 static int tt_shutdown(void)
207 {
208 sfree(config_host);
209 sfree(config_port);
211 if (rdb != NULL)
212 {
213 if (!tcrdbclose(rdb))
214 {
215 printerr ();
216 tcrdbdel (rdb);
217 return (1);
218 }
219 tcrdbdel (rdb);
220 rdb = NULL;
221 }
223 return(0);
224 }
226 void module_register (void)
227 {
228 plugin_register_config("tokyotyrant", tt_config,
229 config_keys, config_keys_num);
230 plugin_register_read("tokyotyrant", tt_read);
231 plugin_register_shutdown("tokyotyrant", tt_shutdown);
232 }
234 /* vim: set sw=8 ts=8 tw=78 : */